Đukić, Teodora

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Authority KeyName Variants
orcid::0000-0002-4097-7567
  • Đukić, Teodora (20)
Projects
Ministry of Education, Science and Technological Development, Republic of Serbia, Grant no. 451-03-68/2020-14/200168 (University of Belgrade, Faculty of Chemistry) FoodEnTwin-Twinning of research activities for the frontier research in the fields of food, nutrition and environmental omics
CAPSIDO – Developement of the assays for detection of SARS Cov-2 virus capsid proteins in biological fluids of COVID19 patients Serbian Academy of Sciences and Arts GA No. F-26.
Serbian Academy of Sciences and Arts [GA No. F-26] UNDP project "Preventing and Responding to COVID-19 in At-risk areas - Sustainable production of the serological IgG test for SARS CoV-2 in Serbia".
Belgian Special Research Fund BOF [StG No: 01N01718] Belgian Special Research Fund BOF StG No. 01N01718
Ghent University Global Campus and Belgian Special Research Fund BOF StG No. 01N01718. Ghent University Global Campus, Belgian Special Research Fund BOF StG No. 01N01718.
Ghent University Global Campus (GUGC), Incheon, Republic of Korea; Belgian Special Research Fund BOF StG No. 01N01718. Ministry of Education, Science and Technological Development, Republic of Serbia, Grant no. 451-03-68/2020-14/200007 (University of Belgrade, Institute for Biological Research 'Siniša Stanković')
Ministry of Education, Science and Technological Development, Republic of Serbia, Grant no. 451-03-68/2020-14/200177 (Immunology Research Centre 'Branislav Janković' Torlak, Belgrade) Serbian Academy of Sciences and Arts (grant number F-26).
Serbian Academy of Sciences and Arts Project F-26. This work is the contribution to the Government of the Republic of Serbian. Ministry of Education, Science and Technological Development of the Republic of Serbia and UNDP fonded Project Titled: “Sustainable production of serological IgG test for SARS CoV-2 in Serbia’’, Project Number: 00121484/2020-02.
Превенција и одговор на COVID-19 у угроженим подручјима - одржива производња серолошког IgG теста за SARS CoV-2 у Србији - LVP-BPA UNDP 00121484/2020-02 Превенција и одговор на COVID-19 у угроженим подручјима - одржива производња серолошког IgG теста за SARS CoV-2 у Србији – LVP-BPA UNDP 00121484/2020-02.

Author's Bibliography

Protein modifications screening of raw and thermally treated meat gastrointestinal digesta

Khulal, Urmila; Đukić, Teodora; Smiljanić, Katarina; Vasović, Tamara; Aćimović, Jelena; Rajković, Andreja; Ćirković-Veličković, Tanja

(Elsevier, 2024)

TY  - JOUR
AU  - Khulal, Urmila
AU  - Đukić, Teodora
AU  - Smiljanić, Katarina
AU  - Vasović, Tamara
AU  - Aćimović, Jelena
AU  - Rajković, Andreja
AU  - Ćirković-Veličković, Tanja
PY  - 2024
UR  - http://cherry.chem.bg.ac.rs/handle/123456789/6437
AB  - Meat samples were subjected to thermal processing combined with simulated INFOGEST in vitro gastrointestinal (GI) digestion. Protein modifications (PMs) were screened with commercially available PM-specific antibodies. Specific proteins at 20, 37, 50, and 65 kDa react to more than 3 PM-specific antibodies among meat proteins. Lysine methylation and methionine oxidation were the most prominent PMs in WB. Mass spectrometry confirmed bands at ≈20 kDa as allergenic proteins: sarcoplasmic calcium-binding protein in oyster, 37 kDa as tropomyosin in shrimp, oyster, and abalone. MS-identified PMs of shellfish allergens were aligned to the IgE binding epitopes. GI digestion-resistant peptides of shellfish proteins were identified as paramyosins in oyster and abalone and SBP in shrimp. Our results point to the high susceptibility of immunodominant epitopes of major shellfish allergens to PMs. In TPM, saturation of oxidative modification increases with thermal processing resulting in higher susceptibility of TPM to gastric digestion.
PB  - Elsevier
T2  - Journal of Functional Foods
T1  - Protein modifications screening of raw and thermally treated meat gastrointestinal digesta
VL  - 113
SP  - 106052
DO  - 10.1016/j.jff.2024.106052
ER  - 
@article{
author = "Khulal, Urmila and Đukić, Teodora and Smiljanić, Katarina and Vasović, Tamara and Aćimović, Jelena and Rajković, Andreja and Ćirković-Veličković, Tanja",
year = "2024",
abstract = "Meat samples were subjected to thermal processing combined with simulated INFOGEST in vitro gastrointestinal (GI) digestion. Protein modifications (PMs) were screened with commercially available PM-specific antibodies. Specific proteins at 20, 37, 50, and 65 kDa react to more than 3 PM-specific antibodies among meat proteins. Lysine methylation and methionine oxidation were the most prominent PMs in WB. Mass spectrometry confirmed bands at ≈20 kDa as allergenic proteins: sarcoplasmic calcium-binding protein in oyster, 37 kDa as tropomyosin in shrimp, oyster, and abalone. MS-identified PMs of shellfish allergens were aligned to the IgE binding epitopes. GI digestion-resistant peptides of shellfish proteins were identified as paramyosins in oyster and abalone and SBP in shrimp. Our results point to the high susceptibility of immunodominant epitopes of major shellfish allergens to PMs. In TPM, saturation of oxidative modification increases with thermal processing resulting in higher susceptibility of TPM to gastric digestion.",
publisher = "Elsevier",
journal = "Journal of Functional Foods",
title = "Protein modifications screening of raw and thermally treated meat gastrointestinal digesta",
volume = "113",
pages = "106052",
doi = "10.1016/j.jff.2024.106052"
}
Khulal, U., Đukić, T., Smiljanić, K., Vasović, T., Aćimović, J., Rajković, A.,& Ćirković-Veličković, T.. (2024). Protein modifications screening of raw and thermally treated meat gastrointestinal digesta. in Journal of Functional Foods
Elsevier., 113, 106052.
https://doi.org/10.1016/j.jff.2024.106052
Khulal U, Đukić T, Smiljanić K, Vasović T, Aćimović J, Rajković A, Ćirković-Veličković T. Protein modifications screening of raw and thermally treated meat gastrointestinal digesta. in Journal of Functional Foods. 2024;113:106052.
doi:10.1016/j.jff.2024.106052 .
Khulal, Urmila, Đukić, Teodora, Smiljanić, Katarina, Vasović, Tamara, Aćimović, Jelena, Rajković, Andreja, Ćirković-Veličković, Tanja, "Protein modifications screening of raw and thermally treated meat gastrointestinal digesta" in Journal of Functional Foods, 113 (2024):106052,
https://doi.org/10.1016/j.jff.2024.106052 . .

Sandwich ELISA for the Quantification of Nucleocapsid Protein of SARS-CoV-2 Based on Polyclonal Antibodies from Two Different Species

Mladenović Stokanić, Maja; Simović, Ana; Jovanović, Vesna B.; Radomirović, Mirjana; Udovićki, Božidar; Krstić Ristivojević, Maja; Đukić, Teodora; Vasović, Tamara; Aćimović, Jelena; Sabljić, Ljiljana; Lukić, Ivana; Kovačević, Ana; Cujić, Danica; Gnjatović, Marija; Smiljanić, Katarina; Stojadinović, Marija; Radosavljević, Jelena; Stanić-Vučinić, Dragana; Stojanović, Marijana; Rajković, Andreja; Ćirković-Veličković, Tanja

(MDPI, 2023)

TY  - JOUR
AU  - Mladenović Stokanić, Maja
AU  - Simović, Ana
AU  - Jovanović, Vesna B.
AU  - Radomirović, Mirjana
AU  - Udovićki, Božidar
AU  - Krstić Ristivojević, Maja
AU  - Đukić, Teodora
AU  - Vasović, Tamara
AU  - Aćimović, Jelena
AU  - Sabljić, Ljiljana
AU  - Lukić, Ivana
AU  - Kovačević, Ana
AU  - Cujić, Danica
AU  - Gnjatović, Marija
AU  - Smiljanić, Katarina
AU  - Stojadinović, Marija
AU  - Radosavljević, Jelena
AU  - Stanić-Vučinić, Dragana
AU  - Stojanović, Marijana
AU  - Rajković, Andreja
AU  - Ćirković-Veličković, Tanja
PY  - 2023
UR  - http://cherry.chem.bg.ac.rs/handle/123456789/6436
AB  - In this study, a cost-effective sandwich ELISA test, based on polyclonal antibodies, for routine quantification SARS-CoV-2 nucleocapsid (N) protein was developed. The recombinant N protein was produced and used for the production of mice and rabbit antisera. Polyclonal N protein-specific antibodies served as capture and detection antibodies. The prototype ELISA has LOD 0.93 ng/mL and LOQ 5.3 ng/mL, with a linear range of 1.52–48.83 ng/mL. N protein heat pretreatment (56 °C, 1 h) decreased, while pretreatment with 1% Triton X-100 increased analytical ELISA sensitivity. The diagnostic specificity of ELISA was 100% (95% CI, 91.19–100.00%) and sensitivity was 52.94% (95% CI, 35.13–70.22%) compared to rtRT-PCR (Ct < 40). Profoundly higher sensitivity was obtained using patient samples mostly containing Wuhan-similar variants (Wuhan, alpha, and delta), 62.50% (95% CI, 40.59 to 81.20%), in comparison to samples mostly containing Wuhan-distant variants (Omicron) 30.00% (6.67–65.25%). The developed product has relatively high diagnostic sensitivity in relation to its analytical sensitivity due to the usage of polyclonal antibodies from two species, providing a wide repertoire of antibodies against multiple N protein epitopes. Moreover, the fast, simple, and inexpensive production of polyclonal antibodies, as the most expensive assay components, would result in affordable antigen tests.
PB  - MDPI
T2  - International Journal of Molecular Sciences
T1  - Sandwich ELISA for the Quantification of Nucleocapsid Protein of SARS-CoV-2 Based on Polyclonal Antibodies from Two Different Species
VL  - 25
IS  - 1
SP  - 333
DO  - 10.3390/ijms25010333
ER  - 
@article{
author = "Mladenović Stokanić, Maja and Simović, Ana and Jovanović, Vesna B. and Radomirović, Mirjana and Udovićki, Božidar and Krstić Ristivojević, Maja and Đukić, Teodora and Vasović, Tamara and Aćimović, Jelena and Sabljić, Ljiljana and Lukić, Ivana and Kovačević, Ana and Cujić, Danica and Gnjatović, Marija and Smiljanić, Katarina and Stojadinović, Marija and Radosavljević, Jelena and Stanić-Vučinić, Dragana and Stojanović, Marijana and Rajković, Andreja and Ćirković-Veličković, Tanja",
year = "2023",
abstract = "In this study, a cost-effective sandwich ELISA test, based on polyclonal antibodies, for routine quantification SARS-CoV-2 nucleocapsid (N) protein was developed. The recombinant N protein was produced and used for the production of mice and rabbit antisera. Polyclonal N protein-specific antibodies served as capture and detection antibodies. The prototype ELISA has LOD 0.93 ng/mL and LOQ 5.3 ng/mL, with a linear range of 1.52–48.83 ng/mL. N protein heat pretreatment (56 °C, 1 h) decreased, while pretreatment with 1% Triton X-100 increased analytical ELISA sensitivity. The diagnostic specificity of ELISA was 100% (95% CI, 91.19–100.00%) and sensitivity was 52.94% (95% CI, 35.13–70.22%) compared to rtRT-PCR (Ct < 40). Profoundly higher sensitivity was obtained using patient samples mostly containing Wuhan-similar variants (Wuhan, alpha, and delta), 62.50% (95% CI, 40.59 to 81.20%), in comparison to samples mostly containing Wuhan-distant variants (Omicron) 30.00% (6.67–65.25%). The developed product has relatively high diagnostic sensitivity in relation to its analytical sensitivity due to the usage of polyclonal antibodies from two species, providing a wide repertoire of antibodies against multiple N protein epitopes. Moreover, the fast, simple, and inexpensive production of polyclonal antibodies, as the most expensive assay components, would result in affordable antigen tests.",
publisher = "MDPI",
journal = "International Journal of Molecular Sciences",
title = "Sandwich ELISA for the Quantification of Nucleocapsid Protein of SARS-CoV-2 Based on Polyclonal Antibodies from Two Different Species",
volume = "25",
number = "1",
pages = "333",
doi = "10.3390/ijms25010333"
}
Mladenović Stokanić, M., Simović, A., Jovanović, V. B., Radomirović, M., Udovićki, B., Krstić Ristivojević, M., Đukić, T., Vasović, T., Aćimović, J., Sabljić, L., Lukić, I., Kovačević, A., Cujić, D., Gnjatović, M., Smiljanić, K., Stojadinović, M., Radosavljević, J., Stanić-Vučinić, D., Stojanović, M., Rajković, A.,& Ćirković-Veličković, T.. (2023). Sandwich ELISA for the Quantification of Nucleocapsid Protein of SARS-CoV-2 Based on Polyclonal Antibodies from Two Different Species. in International Journal of Molecular Sciences
MDPI., 25(1), 333.
https://doi.org/10.3390/ijms25010333
Mladenović Stokanić M, Simović A, Jovanović VB, Radomirović M, Udovićki B, Krstić Ristivojević M, Đukić T, Vasović T, Aćimović J, Sabljić L, Lukić I, Kovačević A, Cujić D, Gnjatović M, Smiljanić K, Stojadinović M, Radosavljević J, Stanić-Vučinić D, Stojanović M, Rajković A, Ćirković-Veličković T. Sandwich ELISA for the Quantification of Nucleocapsid Protein of SARS-CoV-2 Based on Polyclonal Antibodies from Two Different Species. in International Journal of Molecular Sciences. 2023;25(1):333.
doi:10.3390/ijms25010333 .
Mladenović Stokanić, Maja, Simović, Ana, Jovanović, Vesna B., Radomirović, Mirjana, Udovićki, Božidar, Krstić Ristivojević, Maja, Đukić, Teodora, Vasović, Tamara, Aćimović, Jelena, Sabljić, Ljiljana, Lukić, Ivana, Kovačević, Ana, Cujić, Danica, Gnjatović, Marija, Smiljanić, Katarina, Stojadinović, Marija, Radosavljević, Jelena, Stanić-Vučinić, Dragana, Stojanović, Marijana, Rajković, Andreja, Ćirković-Veličković, Tanja, "Sandwich ELISA for the Quantification of Nucleocapsid Protein of SARS-CoV-2 Based on Polyclonal Antibodies from Two Different Species" in International Journal of Molecular Sciences, 25, no. 1 (2023):333,
https://doi.org/10.3390/ijms25010333 . .

Dobijanje rekombinantnog imunogenog fragmenta proteina nukleokapsida SARS-CoV-2 virusa za proizvodnju reagenasa i dijagnostičkih testova na novi korona virus

Ćirković-Veličković, Tanja; Gnjatović, Marija; Ćujić, Danica; Todorović, Aleksandra; Stanić-Vučinić, Dragana; Đukić, Teodora; Mladenović, Maja; Vasović, Tamara; Stojadinović, Marija; Krstić-Ristivojević, Maja; Jovanović, Vesna; Simović, Ana; Radosavljević, Jelena; Aćimović, Jelena M.; Radomirović, Mirjana Ž.; Stojanović, Marijana

(2023)

TY  - GEN
AU  - Ćirković-Veličković, Tanja
AU  - Gnjatović, Marija
AU  - Ćujić, Danica
AU  - Todorović, Aleksandra
AU  - Stanić-Vučinić, Dragana
AU  - Đukić, Teodora
AU  - Mladenović, Maja
AU  - Vasović, Tamara
AU  - Stojadinović, Marija
AU  - Krstić-Ristivojević, Maja
AU  - Jovanović, Vesna
AU  - Simović, Ana
AU  - Radosavljević, Jelena
AU  - Aćimović, Jelena M.
AU  - Radomirović, Mirjana Ž.
AU  - Stojanović, Marijana
PY  - 2023
UR  - http://cherry.chem.bg.ac.rs/handle/123456789/6014
AB  - Нови корона вирус (SARS CoV-2) који се појавио у Вухану 2019. године припада групи једноланчаних РНК вируса [1]. Представља нови инфективни агенс за хуману популацију и веома је брзо детектован у великом броју земаља. Узрочник је респираторних инфекција које могу да буду праћене и веома тешком клиничком сликом. Брзо ширење, одсуство имунитета на овај вирус и одсуство поузданих тестова за детекцију вируса у тренутку избијања пандемије су болест изазвану овим вирусом брзо претворили у здравствени и друштвени проблем највишег приоритета на глобалном нивоу. Иако су највеће биотехнолошке компаније убрзано почеле са развојем и масовном производњом дијагностичких тестова и вакцина, њихова доступност у тренуцима највеће потражње је и даље недовољна, а цене истих су лимитирајући фактор за бољу контролу болести и ширења пандемије [2]. Развој сопствених и одржива производња тестова и вакцина за COVID-19 су од великог друштвеног значаја. Важан предуслов за одрживу производњу тестова је доступност рекомбинантних антигена вируса и могућност производње истих на великој скали за потребе производње домаћих тестова. Овим техничким решењем се описује добијање два кључна антигена новог корона вируса рекомбинантном технологијом и њихова примена у серолошком ЕЛИСА тесту који производи Институт за примену нуклеарне енергије, ИНЕП, као и за добијање реагенаса за детекцију антигена новог корона вируса (специфичних антитела). У првој фази, оптимизоване су секвенце протеина које су подигле осетљивост постојећих серолошких тестова. Иновативност нашег приступа се огледа и у разрађеним експерименталним протоколима за добијање рекомбинантних протеина нуклеокапсида на великој скали, као и у солубилној форми, што олакшава поступак пречишћавања. Избор фрагмента нуклеокапсида који се хетеролого експримира у солубилној форми, а специфично детектује антитела и генерише јак имуни одговор током имунизације животиња (имуногеност) на основу прегледа познатих епитопских секвенци је кључна иновација овог техничког решења. Ово је први пример успешно примењеног рекомбинатног протеина произведеног у Србији у дијагностичком тесту који је регистрован
код Агенције за лекове и медицинска средства Републике Србије (број решења 515-02-02370-21-002), а који је примену нашао и на међународном нивоу.
T1  - Dobijanje rekombinantnog imunogenog fragmenta proteina nukleokapsida SARS-CoV-2 virusa za proizvodnju reagenasa i dijagnostičkih testova na novi korona virus
UR  - https://hdl.handle.net/21.15107/rcub_cherry_6014
ER  - 
@misc{
author = "Ćirković-Veličković, Tanja and Gnjatović, Marija and Ćujić, Danica and Todorović, Aleksandra and Stanić-Vučinić, Dragana and Đukić, Teodora and Mladenović, Maja and Vasović, Tamara and Stojadinović, Marija and Krstić-Ristivojević, Maja and Jovanović, Vesna and Simović, Ana and Radosavljević, Jelena and Aćimović, Jelena M. and Radomirović, Mirjana Ž. and Stojanović, Marijana",
year = "2023",
abstract = "Нови корона вирус (SARS CoV-2) који се појавио у Вухану 2019. године припада групи једноланчаних РНК вируса [1]. Представља нови инфективни агенс за хуману популацију и веома је брзо детектован у великом броју земаља. Узрочник је респираторних инфекција које могу да буду праћене и веома тешком клиничком сликом. Брзо ширење, одсуство имунитета на овај вирус и одсуство поузданих тестова за детекцију вируса у тренутку избијања пандемије су болест изазвану овим вирусом брзо претворили у здравствени и друштвени проблем највишег приоритета на глобалном нивоу. Иако су највеће биотехнолошке компаније убрзано почеле са развојем и масовном производњом дијагностичких тестова и вакцина, њихова доступност у тренуцима највеће потражње је и даље недовољна, а цене истих су лимитирајући фактор за бољу контролу болести и ширења пандемије [2]. Развој сопствених и одржива производња тестова и вакцина за COVID-19 су од великог друштвеног значаја. Важан предуслов за одрживу производњу тестова је доступност рекомбинантних антигена вируса и могућност производње истих на великој скали за потребе производње домаћих тестова. Овим техничким решењем се описује добијање два кључна антигена новог корона вируса рекомбинантном технологијом и њихова примена у серолошком ЕЛИСА тесту који производи Институт за примену нуклеарне енергије, ИНЕП, као и за добијање реагенаса за детекцију антигена новог корона вируса (специфичних антитела). У првој фази, оптимизоване су секвенце протеина које су подигле осетљивост постојећих серолошких тестова. Иновативност нашег приступа се огледа и у разрађеним експерименталним протоколима за добијање рекомбинантних протеина нуклеокапсида на великој скали, као и у солубилној форми, што олакшава поступак пречишћавања. Избор фрагмента нуклеокапсида који се хетеролого експримира у солубилној форми, а специфично детектује антитела и генерише јак имуни одговор током имунизације животиња (имуногеност) на основу прегледа познатих епитопских секвенци је кључна иновација овог техничког решења. Ово је први пример успешно примењеног рекомбинатног протеина произведеног у Србији у дијагностичком тесту који је регистрован
код Агенције за лекове и медицинска средства Републике Србије (број решења 515-02-02370-21-002), а који је примену нашао и на међународном нивоу.",
title = "Dobijanje rekombinantnog imunogenog fragmenta proteina nukleokapsida SARS-CoV-2 virusa za proizvodnju reagenasa i dijagnostičkih testova na novi korona virus",
url = "https://hdl.handle.net/21.15107/rcub_cherry_6014"
}
Ćirković-Veličković, T., Gnjatović, M., Ćujić, D., Todorović, A., Stanić-Vučinić, D., Đukić, T., Mladenović, M., Vasović, T., Stojadinović, M., Krstić-Ristivojević, M., Jovanović, V., Simović, A., Radosavljević, J., Aćimović, J. M., Radomirović, M. Ž.,& Stojanović, M.. (2023). Dobijanje rekombinantnog imunogenog fragmenta proteina nukleokapsida SARS-CoV-2 virusa za proizvodnju reagenasa i dijagnostičkih testova na novi korona virus. .
https://hdl.handle.net/21.15107/rcub_cherry_6014
Ćirković-Veličković T, Gnjatović M, Ćujić D, Todorović A, Stanić-Vučinić D, Đukić T, Mladenović M, Vasović T, Stojadinović M, Krstić-Ristivojević M, Jovanović V, Simović A, Radosavljević J, Aćimović JM, Radomirović MŽ, Stojanović M. Dobijanje rekombinantnog imunogenog fragmenta proteina nukleokapsida SARS-CoV-2 virusa za proizvodnju reagenasa i dijagnostičkih testova na novi korona virus. 2023;.
https://hdl.handle.net/21.15107/rcub_cherry_6014 .
Ćirković-Veličković, Tanja, Gnjatović, Marija, Ćujić, Danica, Todorović, Aleksandra, Stanić-Vučinić, Dragana, Đukić, Teodora, Mladenović, Maja, Vasović, Tamara, Stojadinović, Marija, Krstić-Ristivojević, Maja, Jovanović, Vesna, Simović, Ana, Radosavljević, Jelena, Aćimović, Jelena M., Radomirović, Mirjana Ž., Stojanović, Marijana, "Dobijanje rekombinantnog imunogenog fragmenta proteina nukleokapsida SARS-CoV-2 virusa za proizvodnju reagenasa i dijagnostičkih testova na novi korona virus" (2023),
https://hdl.handle.net/21.15107/rcub_cherry_6014 .

Development of immuno-PCR for sensitive quantification of SARS-CoV-2 nucleocapsid protein

Radomirović, Mirjana Ž.; Bićanin, Maša; Udovički, Božidar; Krstić-Ristivojević, Maja; Đukić, Teodora; Vasović, Tamara; Jovanović, Vesna; Stanić-Vučinić, Dragana; Rajković, Andreja; Ćirković-Veličković, Tanja

(Federation of European Biochemical Societies, Wiley, 2023)

TY  - CONF
AU  - Radomirović, Mirjana Ž.
AU  - Bićanin, Maša
AU  - Udovički, Božidar
AU  - Krstić-Ristivojević, Maja
AU  - Đukić, Teodora
AU  - Vasović, Tamara
AU  - Jovanović, Vesna
AU  - Stanić-Vučinić, Dragana
AU  - Rajković, Andreja
AU  - Ćirković-Veličković, Tanja
PY  - 2023
UR  - http://cherry.chem.bg.ac.rs/handle/123456789/6021
AB  - Accurately diagnosing people with suspected SARS-CoV-2 infection is essential to help manage COVID-19. Currently available SARS-CoV-2 diagnostics detect either RNA of the virus by RT-PCR or the presence of viral antigens in biological fluids by ELISA or similar techniques. Low sensitivity of antigen tests could lead to the risk of false negative results. Therefore, this study aimed to develop a highly sensitive immuno-PCR method for quantifying SARS-CoV-2 nucleocapsid (N) protein that combines the specificity of sandwich ELISA with the sensitivity of PCR. Recombinant N protein fragment was produced in E. coli as an expression system and purified using immobilized metal ion affinity chromatography. The antibodies against the N protein were raised in rabbits and mice. High-affinity polyclonal mice and rabbit N protein-specific antisera were purified using ammonium sulfate precipitation and used to develop sandwich ELISA for the quantification of N protein. Mice polyclonal serum was used as a capture for N protein. N
protein bound to mice antibodies was detected with rabbit polyclonal sera. A double-stranded amino-DNA molecule of 77 base pairs was PCR-synthesized, covalently conjugated to a secondary goat anti-rabbit antibody and subsequently amplified and quantified by real-time PCR. The results were compared to analogous sandwich ELISA consisting of alkaline phosphatase-labeled goat anti-rabbit antibody. The sensitivity of immuno-PCR for quantification of N protein was increased by up to 7-fold compared to analogous ELISA, having a limit of detection of 92 pg/mL and a limit of quantification of 840 pg/mL. The developed immuno-PCR method thus has the potential to be used as a new antigen test for COVID-19 and beyond.
PB  - Federation of European Biochemical Societies, Wiley
C3  - The 47th FEBS Congress, 8th-12th July, 2023. In: FEBS Open Bio, 13: Suppl. 2
T1  - Development of immuno-PCR for sensitive quantification of SARS-CoV-2 nucleocapsid protein
SP  - 44
EP  - 44
UR  - https://hdl.handle.net/21.15107/rcub_cherry_6021
ER  - 
@conference{
author = "Radomirović, Mirjana Ž. and Bićanin, Maša and Udovički, Božidar and Krstić-Ristivojević, Maja and Đukić, Teodora and Vasović, Tamara and Jovanović, Vesna and Stanić-Vučinić, Dragana and Rajković, Andreja and Ćirković-Veličković, Tanja",
year = "2023",
abstract = "Accurately diagnosing people with suspected SARS-CoV-2 infection is essential to help manage COVID-19. Currently available SARS-CoV-2 diagnostics detect either RNA of the virus by RT-PCR or the presence of viral antigens in biological fluids by ELISA or similar techniques. Low sensitivity of antigen tests could lead to the risk of false negative results. Therefore, this study aimed to develop a highly sensitive immuno-PCR method for quantifying SARS-CoV-2 nucleocapsid (N) protein that combines the specificity of sandwich ELISA with the sensitivity of PCR. Recombinant N protein fragment was produced in E. coli as an expression system and purified using immobilized metal ion affinity chromatography. The antibodies against the N protein were raised in rabbits and mice. High-affinity polyclonal mice and rabbit N protein-specific antisera were purified using ammonium sulfate precipitation and used to develop sandwich ELISA for the quantification of N protein. Mice polyclonal serum was used as a capture for N protein. N
protein bound to mice antibodies was detected with rabbit polyclonal sera. A double-stranded amino-DNA molecule of 77 base pairs was PCR-synthesized, covalently conjugated to a secondary goat anti-rabbit antibody and subsequently amplified and quantified by real-time PCR. The results were compared to analogous sandwich ELISA consisting of alkaline phosphatase-labeled goat anti-rabbit antibody. The sensitivity of immuno-PCR for quantification of N protein was increased by up to 7-fold compared to analogous ELISA, having a limit of detection of 92 pg/mL and a limit of quantification of 840 pg/mL. The developed immuno-PCR method thus has the potential to be used as a new antigen test for COVID-19 and beyond.",
publisher = "Federation of European Biochemical Societies, Wiley",
journal = "The 47th FEBS Congress, 8th-12th July, 2023. In: FEBS Open Bio, 13: Suppl. 2",
title = "Development of immuno-PCR for sensitive quantification of SARS-CoV-2 nucleocapsid protein",
pages = "44-44",
url = "https://hdl.handle.net/21.15107/rcub_cherry_6021"
}
Radomirović, M. Ž., Bićanin, M., Udovički, B., Krstić-Ristivojević, M., Đukić, T., Vasović, T., Jovanović, V., Stanić-Vučinić, D., Rajković, A.,& Ćirković-Veličković, T.. (2023). Development of immuno-PCR for sensitive quantification of SARS-CoV-2 nucleocapsid protein. in The 47th FEBS Congress, 8th-12th July, 2023. In: FEBS Open Bio, 13: Suppl. 2
Federation of European Biochemical Societies, Wiley., 44-44.
https://hdl.handle.net/21.15107/rcub_cherry_6021
Radomirović MŽ, Bićanin M, Udovički B, Krstić-Ristivojević M, Đukić T, Vasović T, Jovanović V, Stanić-Vučinić D, Rajković A, Ćirković-Veličković T. Development of immuno-PCR for sensitive quantification of SARS-CoV-2 nucleocapsid protein. in The 47th FEBS Congress, 8th-12th July, 2023. In: FEBS Open Bio, 13: Suppl. 2. 2023;:44-44.
https://hdl.handle.net/21.15107/rcub_cherry_6021 .
Radomirović, Mirjana Ž., Bićanin, Maša, Udovički, Božidar, Krstić-Ristivojević, Maja, Đukić, Teodora, Vasović, Tamara, Jovanović, Vesna, Stanić-Vučinić, Dragana, Rajković, Andreja, Ćirković-Veličković, Tanja, "Development of immuno-PCR for sensitive quantification of SARS-CoV-2 nucleocapsid protein" in The 47th FEBS Congress, 8th-12th July, 2023. In: FEBS Open Bio, 13: Suppl. 2 (2023):44-44,
https://hdl.handle.net/21.15107/rcub_cherry_6021 .

Proteomic Profiling of Major Peanut Allergens and Their Post-Translational Modifications Affected by Roasting

Đukić, Teodora; Smiljanić, Katarina; Mihailović, Jelena; Prodić, Ivana; Apostolović, Danijela; Liu, Shu-Hua; Epstein, Michelle M.; van Hage, Marianne; Stanić-Vučinić, Dragana; Ćirković-Veličković, Tanja

(MDPI, 2022)

TY  - JOUR
AU  - Đukić, Teodora
AU  - Smiljanić, Katarina
AU  - Mihailović, Jelena
AU  - Prodić, Ivana
AU  - Apostolović, Danijela
AU  - Liu, Shu-Hua
AU  - Epstein, Michelle M.
AU  - van Hage, Marianne
AU  - Stanić-Vučinić, Dragana
AU  - Ćirković-Veličković, Tanja
PY  - 2022
UR  - http://cherry.chem.bg.ac.rs/handle/123456789/5781
AB  - : Post-translational modifications (PTMs) are covalent changes occurring on amino acid side
chains of proteins and yet are neglected structural and functional aspects of protein architecture. The
objective was to detect differences in PTM profiles that take place after roasting using open PTM
search. We conducted a bottom-up proteomic study to investigate the impact of peanut roasting on
readily soluble allergens and their PTM profiles. Proteomic PTM profiling of certain modifications
was confirmed by Western blotting with a series of PTM-specific antibodies. In addition to inducing
protein aggregation and denaturation, roasting may facilitate change in their PTM pattern and relative
profiling. We have shown that Ara h 1 is the most modified major allergen in both samples in terms
of modification versatility and extent. The most frequent PTM was methionine oxidation, especially
in roasted samples. PTMs uniquely found in roasted samples were hydroxylation (Trp), formylation
(Arg/Lys), and oxidation or hydroxylation (Asn). Raw and roasted peanut extracts did not differ
in the binding of IgE from the serum of peanut-sensitised individuals done by ELISA. This study
provides a better understanding of how roasting impacts the PTM profile of major peanut allergens
and provides a good foundation for further exploration of PTMs
PB  - MDPI
T2  - Foods
T1  - Proteomic Profiling of Major Peanut Allergens and Their Post-Translational Modifications Affected by Roasting
VL  - 11
IS  - 24
SP  - 3993
DO  - 10.3390/foods11243993
ER  - 
@article{
author = "Đukić, Teodora and Smiljanić, Katarina and Mihailović, Jelena and Prodić, Ivana and Apostolović, Danijela and Liu, Shu-Hua and Epstein, Michelle M. and van Hage, Marianne and Stanić-Vučinić, Dragana and Ćirković-Veličković, Tanja",
year = "2022",
abstract = ": Post-translational modifications (PTMs) are covalent changes occurring on amino acid side
chains of proteins and yet are neglected structural and functional aspects of protein architecture. The
objective was to detect differences in PTM profiles that take place after roasting using open PTM
search. We conducted a bottom-up proteomic study to investigate the impact of peanut roasting on
readily soluble allergens and their PTM profiles. Proteomic PTM profiling of certain modifications
was confirmed by Western blotting with a series of PTM-specific antibodies. In addition to inducing
protein aggregation and denaturation, roasting may facilitate change in their PTM pattern and relative
profiling. We have shown that Ara h 1 is the most modified major allergen in both samples in terms
of modification versatility and extent. The most frequent PTM was methionine oxidation, especially
in roasted samples. PTMs uniquely found in roasted samples were hydroxylation (Trp), formylation
(Arg/Lys), and oxidation or hydroxylation (Asn). Raw and roasted peanut extracts did not differ
in the binding of IgE from the serum of peanut-sensitised individuals done by ELISA. This study
provides a better understanding of how roasting impacts the PTM profile of major peanut allergens
and provides a good foundation for further exploration of PTMs",
publisher = "MDPI",
journal = "Foods",
title = "Proteomic Profiling of Major Peanut Allergens and Their Post-Translational Modifications Affected by Roasting",
volume = "11",
number = "24",
pages = "3993",
doi = "10.3390/foods11243993"
}
Đukić, T., Smiljanić, K., Mihailović, J., Prodić, I., Apostolović, D., Liu, S., Epstein, M. M., van Hage, M., Stanić-Vučinić, D.,& Ćirković-Veličković, T.. (2022). Proteomic Profiling of Major Peanut Allergens and Their Post-Translational Modifications Affected by Roasting. in Foods
MDPI., 11(24), 3993.
https://doi.org/10.3390/foods11243993
Đukić T, Smiljanić K, Mihailović J, Prodić I, Apostolović D, Liu S, Epstein MM, van Hage M, Stanić-Vučinić D, Ćirković-Veličković T. Proteomic Profiling of Major Peanut Allergens and Their Post-Translational Modifications Affected by Roasting. in Foods. 2022;11(24):3993.
doi:10.3390/foods11243993 .
Đukić, Teodora, Smiljanić, Katarina, Mihailović, Jelena, Prodić, Ivana, Apostolović, Danijela, Liu, Shu-Hua, Epstein, Michelle M., van Hage, Marianne, Stanić-Vučinić, Dragana, Ćirković-Veličković, Tanja, "Proteomic Profiling of Major Peanut Allergens and Their Post-Translational Modifications Affected by Roasting" in Foods, 11, no. 24 (2022):3993,
https://doi.org/10.3390/foods11243993 . .
4
3
2

Supplementary for: Đukić, T., Smiljanić, K., Mihailović, J., Prodić, I., Apostolović, D., Liu, S.-H., Epstein, M. M., van Hage, M., Stanić-Vučinić, D., & Ćirković Veličković, T. (2022). Proteomic Profiling of Major Peanut Allergens and Their Post-Translational Modifications Affected by Roasting. Foods, 11(24). https://doi.org/10.3390/foods11243993

Đukić, Teodora; Smiljanić, Katarina; Mihailović, Jelena; Prodić, Ivana; Apostolović, Danijela; Liu, Shu-Hua; Epstein, Michelle M.; van Hage, Marianne; Stanić-Vučinić, Dragana; Ćirković-Veličković, Tanja

(MDPI, 2022)

TY  - DATA
AU  - Đukić, Teodora
AU  - Smiljanić, Katarina
AU  - Mihailović, Jelena
AU  - Prodić, Ivana
AU  - Apostolović, Danijela
AU  - Liu, Shu-Hua
AU  - Epstein, Michelle M.
AU  - van Hage, Marianne
AU  - Stanić-Vučinić, Dragana
AU  - Ćirković-Veličković, Tanja
PY  - 2022
UR  - http://cherry.chem.bg.ac.rs/handle/123456789/5708
AB  - Post-translational modifications (PTMs) are covalent changes occurring on amino acid side chains of proteins and yet are neglected structural and functional aspects of protein architecture. The objective was to detect differences in PTM profiles that take place after roasting using open PTM search. We conducted a bottom-up proteomic study to investigate the impact of peanut roasting on readily soluble allergens and their PTM profiles. Proteomic PTM profiling of certain modifications was confirmed by Western blotting with a series of PTM-specific antibodies. In addition to inducing protein aggregation and denaturation, roasting may facilitate change in their PTM pattern and relative profiling. We have shown that Ara h 1 is the most modified major allergen in both samples in terms of modification versatility and extent. The most frequent PTM was methionine oxidation, especially in roasted samples. PTMs uniquely found in roasted samples were hydroxylation (Trp), formylation (Arg/Lys), and oxidation or hydroxylation (Asn). Raw and roasted peanut extracts did not differ in the binding of IgE from the serum of peanut-sensitised individuals done by ELISA. This study provides a better understanding of how roasting impacts the PTM profile of major peanut allergens and provides a good foundation for further exploration of PTMs.
PB  - MDPI
T2  - Foods
T1  - Supplementary for: Đukić, T., Smiljanić, K., Mihailović, J., Prodić, I., Apostolović, D., Liu, S.-H., Epstein, M. M., van Hage, M., Stanić-Vučinić, D., & Ćirković Veličković, T. (2022). Proteomic Profiling of Major Peanut Allergens and Their Post-Translational Modifications Affected by Roasting. Foods, 11(24). https://doi.org/10.3390/foods11243993
VL  - 11
IS  - 24
EP  - 3993
UR  - https://hdl.handle.net/21.15107/rcub_cherry_5708
ER  - 
@misc{
author = "Đukić, Teodora and Smiljanić, Katarina and Mihailović, Jelena and Prodić, Ivana and Apostolović, Danijela and Liu, Shu-Hua and Epstein, Michelle M. and van Hage, Marianne and Stanić-Vučinić, Dragana and Ćirković-Veličković, Tanja",
year = "2022",
abstract = "Post-translational modifications (PTMs) are covalent changes occurring on amino acid side chains of proteins and yet are neglected structural and functional aspects of protein architecture. The objective was to detect differences in PTM profiles that take place after roasting using open PTM search. We conducted a bottom-up proteomic study to investigate the impact of peanut roasting on readily soluble allergens and their PTM profiles. Proteomic PTM profiling of certain modifications was confirmed by Western blotting with a series of PTM-specific antibodies. In addition to inducing protein aggregation and denaturation, roasting may facilitate change in their PTM pattern and relative profiling. We have shown that Ara h 1 is the most modified major allergen in both samples in terms of modification versatility and extent. The most frequent PTM was methionine oxidation, especially in roasted samples. PTMs uniquely found in roasted samples were hydroxylation (Trp), formylation (Arg/Lys), and oxidation or hydroxylation (Asn). Raw and roasted peanut extracts did not differ in the binding of IgE from the serum of peanut-sensitised individuals done by ELISA. This study provides a better understanding of how roasting impacts the PTM profile of major peanut allergens and provides a good foundation for further exploration of PTMs.",
publisher = "MDPI",
journal = "Foods",
title = "Supplementary for: Đukić, T., Smiljanić, K., Mihailović, J., Prodić, I., Apostolović, D., Liu, S.-H., Epstein, M. M., van Hage, M., Stanić-Vučinić, D., & Ćirković Veličković, T. (2022). Proteomic Profiling of Major Peanut Allergens and Their Post-Translational Modifications Affected by Roasting. Foods, 11(24). https://doi.org/10.3390/foods11243993",
volume = "11",
number = "24",
pages = "3993",
url = "https://hdl.handle.net/21.15107/rcub_cherry_5708"
}
Đukić, T., Smiljanić, K., Mihailović, J., Prodić, I., Apostolović, D., Liu, S., Epstein, M. M., van Hage, M., Stanić-Vučinić, D.,& Ćirković-Veličković, T.. (2022). Supplementary for: Đukić, T., Smiljanić, K., Mihailović, J., Prodić, I., Apostolović, D., Liu, S.-H., Epstein, M. M., van Hage, M., Stanić-Vučinić, D., & Ćirković Veličković, T. (2022). Proteomic Profiling of Major Peanut Allergens and Their Post-Translational Modifications Affected by Roasting. Foods, 11(24). https://doi.org/10.3390/foods11243993. in Foods
MDPI., 11(24).
https://hdl.handle.net/21.15107/rcub_cherry_5708
Đukić T, Smiljanić K, Mihailović J, Prodić I, Apostolović D, Liu S, Epstein MM, van Hage M, Stanić-Vučinić D, Ćirković-Veličković T. Supplementary for: Đukić, T., Smiljanić, K., Mihailović, J., Prodić, I., Apostolović, D., Liu, S.-H., Epstein, M. M., van Hage, M., Stanić-Vučinić, D., & Ćirković Veličković, T. (2022). Proteomic Profiling of Major Peanut Allergens and Their Post-Translational Modifications Affected by Roasting. Foods, 11(24). https://doi.org/10.3390/foods11243993. in Foods. 2022;11(24):null-3993.
https://hdl.handle.net/21.15107/rcub_cherry_5708 .
Đukić, Teodora, Smiljanić, Katarina, Mihailović, Jelena, Prodić, Ivana, Apostolović, Danijela, Liu, Shu-Hua, Epstein, Michelle M., van Hage, Marianne, Stanić-Vučinić, Dragana, Ćirković-Veličković, Tanja, "Supplementary for: Đukić, T., Smiljanić, K., Mihailović, J., Prodić, I., Apostolović, D., Liu, S.-H., Epstein, M. M., van Hage, M., Stanić-Vučinić, D., & Ćirković Veličković, T. (2022). Proteomic Profiling of Major Peanut Allergens and Their Post-Translational Modifications Affected by Roasting. Foods, 11(24). https://doi.org/10.3390/foods11243993" in Foods, 11, no. 24 (2022),
https://hdl.handle.net/21.15107/rcub_cherry_5708 .

Expression, purification and immunological characterization of recombinant nucleocapsid protein fragment from SARS-CoV-2

Đukić, Teodora; Mladenović, Maja; Stanić-Vučinić, Dragana; Radosavljević, Jelena; Smiljanić, Katarina; Sabljić, Ljiljana; Dević, Marija; Ćujić, Danica R.; Vasović, Tamara; Simović, Ana; Radomirović, Mirjana Ž.; Ćirković-Veličković, Tanja

(Elsevier, 2021)

TY  - JOUR
AU  - Đukić, Teodora
AU  - Mladenović, Maja
AU  - Stanić-Vučinić, Dragana
AU  - Radosavljević, Jelena
AU  - Smiljanić, Katarina
AU  - Sabljić, Ljiljana
AU  - Dević, Marija
AU  - Ćujić, Danica R.
AU  - Vasović, Tamara
AU  - Simović, Ana
AU  - Radomirović, Mirjana Ž.
AU  - Ćirković-Veličković, Tanja
PY  - 2021
UR  - https://cherry.chem.bg.ac.rs/handle/123456789/4330
AB  - Serological testing is important method for diagnosis of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection. Nucleocapsid (N) protein is the most abundant virus derived protein and strong immunogen. We aimed to find its efficient, low-cost production.

SARS-CoV-2 recombinant fragment of nucleocapsid protein (rfNP; 58–419 aa) was expressed in E. coli in soluble form, purified and characterized biochemically and immunologically.

Purified rfNP has secondary structure of full-length recombinant N protein, with high percentage of disordered structure (34.2%) and of β-sheet (40.7%). rfNP was tested in immunoblot using sera of COVID-19 convalescent patients. ELISA was optimized with sera of RT-PCR confirmed positive symptomatic patients and healthy individuals. IgG detection sensitivity was 96% (47/50) and specificity 97% (67/68), while IgM detection was slightly lower (94% and 96.5%, respectively).

Cost-effective approach for soluble recombinant N protein fragment production was developed, with reliable IgG and IgM antibodies detection of SARS-CoV-2 infection.
PB  - Elsevier
T2  - Virology journal
T1  - Expression, purification and immunological characterization of recombinant nucleocapsid protein fragment from SARS-CoV-2
VL  - 557
SP  - 15
EP  - 22
DO  - 10.1016/j.virol.2021.01.004
ER  - 
@article{
author = "Đukić, Teodora and Mladenović, Maja and Stanić-Vučinić, Dragana and Radosavljević, Jelena and Smiljanić, Katarina and Sabljić, Ljiljana and Dević, Marija and Ćujić, Danica R. and Vasović, Tamara and Simović, Ana and Radomirović, Mirjana Ž. and Ćirković-Veličković, Tanja",
year = "2021",
abstract = "Serological testing is important method for diagnosis of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection. Nucleocapsid (N) protein is the most abundant virus derived protein and strong immunogen. We aimed to find its efficient, low-cost production.

SARS-CoV-2 recombinant fragment of nucleocapsid protein (rfNP; 58–419 aa) was expressed in E. coli in soluble form, purified and characterized biochemically and immunologically.

Purified rfNP has secondary structure of full-length recombinant N protein, with high percentage of disordered structure (34.2%) and of β-sheet (40.7%). rfNP was tested in immunoblot using sera of COVID-19 convalescent patients. ELISA was optimized with sera of RT-PCR confirmed positive symptomatic patients and healthy individuals. IgG detection sensitivity was 96% (47/50) and specificity 97% (67/68), while IgM detection was slightly lower (94% and 96.5%, respectively).

Cost-effective approach for soluble recombinant N protein fragment production was developed, with reliable IgG and IgM antibodies detection of SARS-CoV-2 infection.",
publisher = "Elsevier",
journal = "Virology journal",
title = "Expression, purification and immunological characterization of recombinant nucleocapsid protein fragment from SARS-CoV-2",
volume = "557",
pages = "15-22",
doi = "10.1016/j.virol.2021.01.004"
}
Đukić, T., Mladenović, M., Stanić-Vučinić, D., Radosavljević, J., Smiljanić, K., Sabljić, L., Dević, M., Ćujić, D. R., Vasović, T., Simović, A., Radomirović, M. Ž.,& Ćirković-Veličković, T.. (2021). Expression, purification and immunological characterization of recombinant nucleocapsid protein fragment from SARS-CoV-2. in Virology journal
Elsevier., 557, 15-22.
https://doi.org/10.1016/j.virol.2021.01.004
Đukić T, Mladenović M, Stanić-Vučinić D, Radosavljević J, Smiljanić K, Sabljić L, Dević M, Ćujić DR, Vasović T, Simović A, Radomirović MŽ, Ćirković-Veličković T. Expression, purification and immunological characterization of recombinant nucleocapsid protein fragment from SARS-CoV-2. in Virology journal. 2021;557:15-22.
doi:10.1016/j.virol.2021.01.004 .
Đukić, Teodora, Mladenović, Maja, Stanić-Vučinić, Dragana, Radosavljević, Jelena, Smiljanić, Katarina, Sabljić, Ljiljana, Dević, Marija, Ćujić, Danica R., Vasović, Tamara, Simović, Ana, Radomirović, Mirjana Ž., Ćirković-Veličković, Tanja, "Expression, purification and immunological characterization of recombinant nucleocapsid protein fragment from SARS-CoV-2" in Virology journal, 557 (2021):15-22,
https://doi.org/10.1016/j.virol.2021.01.004 . .
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16

Expression, purification and immunological characterization of recombinant nucleocapsid protein fragment from SARS-CoV-2

Đukić, Teodora; Mladenović, Maja; Stanić-Vučinić, Dragana; Radosavljević, Jelena; Smiljanić, Katarina; Sabljić, Ljiljana; Dević, Marija; Ćujić, Danica R.; Vasović, Tamara; Simović, Ana; Radomirović, Mirjana Ž.; Ćirković-Veličković, Tanja

(Elsevier, 2021)

TY  - JOUR
AU  - Đukić, Teodora
AU  - Mladenović, Maja
AU  - Stanić-Vučinić, Dragana
AU  - Radosavljević, Jelena
AU  - Smiljanić, Katarina
AU  - Sabljić, Ljiljana
AU  - Dević, Marija
AU  - Ćujić, Danica R.
AU  - Vasović, Tamara
AU  - Simović, Ana
AU  - Radomirović, Mirjana Ž.
AU  - Ćirković-Veličković, Tanja
PY  - 2021
UR  - https://cherry.chem.bg.ac.rs/handle/123456789/4331
AB  - Serological testing is important method for diagnosis of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection. Nucleocapsid (N) protein is the most abundant virus derived protein and strong immunogen. We aimed to find its efficient, low-cost production.SARS-CoV-2 recombinant fragment of nucleocapsid protein (rfNP; 58–419 aa) was expressed in E. coli in soluble form, purified and characterized biochemically and immunologically.Purified rfNP has secondary structure of full-length recombinant N protein, with high percentage of disordered structure (34.2%) and of β-sheet (40.7%). rfNP was tested in immunoblot using sera of COVID-19 convalescent patients. ELISA was optimized with sera of RT-PCR confirmed positive symptomatic patients and healthy individuals. IgG detection sensitivity was 96% (47/50) and specificity 97% (67/68), while IgM detection was slightly lower (94% and 96.5%, respectively).Cost-effective approach for soluble recombinant N protein fragment production was developed, with reliable IgG and IgM antibodies detection of SARS-CoV-2 infection.
PB  - Elsevier
T2  - Virology journal
T1  - Expression, purification and immunological characterization of recombinant nucleocapsid protein fragment from SARS-CoV-2
VL  - 557
SP  - 15
EP  - 22
DO  - 10.1016/j.virol.2021.01.004
ER  - 
@article{
author = "Đukić, Teodora and Mladenović, Maja and Stanić-Vučinić, Dragana and Radosavljević, Jelena and Smiljanić, Katarina and Sabljić, Ljiljana and Dević, Marija and Ćujić, Danica R. and Vasović, Tamara and Simović, Ana and Radomirović, Mirjana Ž. and Ćirković-Veličković, Tanja",
year = "2021",
abstract = "Serological testing is important method for diagnosis of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection. Nucleocapsid (N) protein is the most abundant virus derived protein and strong immunogen. We aimed to find its efficient, low-cost production.SARS-CoV-2 recombinant fragment of nucleocapsid protein (rfNP; 58–419 aa) was expressed in E. coli in soluble form, purified and characterized biochemically and immunologically.Purified rfNP has secondary structure of full-length recombinant N protein, with high percentage of disordered structure (34.2%) and of β-sheet (40.7%). rfNP was tested in immunoblot using sera of COVID-19 convalescent patients. ELISA was optimized with sera of RT-PCR confirmed positive symptomatic patients and healthy individuals. IgG detection sensitivity was 96% (47/50) and specificity 97% (67/68), while IgM detection was slightly lower (94% and 96.5%, respectively).Cost-effective approach for soluble recombinant N protein fragment production was developed, with reliable IgG and IgM antibodies detection of SARS-CoV-2 infection.",
publisher = "Elsevier",
journal = "Virology journal",
title = "Expression, purification and immunological characterization of recombinant nucleocapsid protein fragment from SARS-CoV-2",
volume = "557",
pages = "15-22",
doi = "10.1016/j.virol.2021.01.004"
}
Đukić, T., Mladenović, M., Stanić-Vučinić, D., Radosavljević, J., Smiljanić, K., Sabljić, L., Dević, M., Ćujić, D. R., Vasović, T., Simović, A., Radomirović, M. Ž.,& Ćirković-Veličković, T.. (2021). Expression, purification and immunological characterization of recombinant nucleocapsid protein fragment from SARS-CoV-2. in Virology journal
Elsevier., 557, 15-22.
https://doi.org/10.1016/j.virol.2021.01.004
Đukić T, Mladenović M, Stanić-Vučinić D, Radosavljević J, Smiljanić K, Sabljić L, Dević M, Ćujić DR, Vasović T, Simović A, Radomirović MŽ, Ćirković-Veličković T. Expression, purification and immunological characterization of recombinant nucleocapsid protein fragment from SARS-CoV-2. in Virology journal. 2021;557:15-22.
doi:10.1016/j.virol.2021.01.004 .
Đukić, Teodora, Mladenović, Maja, Stanić-Vučinić, Dragana, Radosavljević, Jelena, Smiljanić, Katarina, Sabljić, Ljiljana, Dević, Marija, Ćujić, Danica R., Vasović, Tamara, Simović, Ana, Radomirović, Mirjana Ž., Ćirković-Veličković, Tanja, "Expression, purification and immunological characterization of recombinant nucleocapsid protein fragment from SARS-CoV-2" in Virology journal, 557 (2021):15-22,
https://doi.org/10.1016/j.virol.2021.01.004 . .
5
21
8
20
16

Effects of lysin's and arginige's modifications on trypsin proteolytic efficacy imposed before and after the peanut roasting

Smiljanić, Katarina; Prodić, Ivana; Đukić, Teodora; Vasović, Tamara; Jovanović, Vesna B.; Ćirković-Veličković, Tanja

(2021)

TY  - CONF
AU  - Smiljanić, Katarina
AU  - Prodić, Ivana
AU  - Đukić, Teodora
AU  - Vasović, Tamara
AU  - Jovanović, Vesna B.
AU  - Ćirković-Veličković, Tanja
PY  - 2021
UR  - http://cherry.chem.bg.ac.rs/handle/123456789/5716
C3  - Proteomics and Metabolomics for Personalized Medicine, XV Italian Proteomics Association Annual Meeting, Catholic University of the Sacred Heart, Roma, Italy, 8th-10th September 2021
T1  - Effects of lysin's and arginige's modifications on trypsin proteolytic efficacy imposed before and after the peanut roasting
SP  - 71
EP  - 71
UR  - https://hdl.handle.net/21.15107/rcub_cherry_5716
ER  - 
@conference{
author = "Smiljanić, Katarina and Prodić, Ivana and Đukić, Teodora and Vasović, Tamara and Jovanović, Vesna B. and Ćirković-Veličković, Tanja",
year = "2021",
journal = "Proteomics and Metabolomics for Personalized Medicine, XV Italian Proteomics Association Annual Meeting, Catholic University of the Sacred Heart, Roma, Italy, 8th-10th September 2021",
title = "Effects of lysin's and arginige's modifications on trypsin proteolytic efficacy imposed before and after the peanut roasting",
pages = "71-71",
url = "https://hdl.handle.net/21.15107/rcub_cherry_5716"
}
Smiljanić, K., Prodić, I., Đukić, T., Vasović, T., Jovanović, V. B.,& Ćirković-Veličković, T.. (2021). Effects of lysin's and arginige's modifications on trypsin proteolytic efficacy imposed before and after the peanut roasting. in Proteomics and Metabolomics for Personalized Medicine, XV Italian Proteomics Association Annual Meeting, Catholic University of the Sacred Heart, Roma, Italy, 8th-10th September 2021, 71-71.
https://hdl.handle.net/21.15107/rcub_cherry_5716
Smiljanić K, Prodić I, Đukić T, Vasović T, Jovanović VB, Ćirković-Veličković T. Effects of lysin's and arginige's modifications on trypsin proteolytic efficacy imposed before and after the peanut roasting. in Proteomics and Metabolomics for Personalized Medicine, XV Italian Proteomics Association Annual Meeting, Catholic University of the Sacred Heart, Roma, Italy, 8th-10th September 2021. 2021;:71-71.
https://hdl.handle.net/21.15107/rcub_cherry_5716 .
Smiljanić, Katarina, Prodić, Ivana, Đukić, Teodora, Vasović, Tamara, Jovanović, Vesna B., Ćirković-Veličković, Tanja, "Effects of lysin's and arginige's modifications on trypsin proteolytic efficacy imposed before and after the peanut roasting" in Proteomics and Metabolomics for Personalized Medicine, XV Italian Proteomics Association Annual Meeting, Catholic University of the Sacred Heart, Roma, Italy, 8th-10th September 2021 (2021):71-71,
https://hdl.handle.net/21.15107/rcub_cherry_5716 .

Proteomic and immunological characterization of recombinantly expressed nucleocapsid SARS-CoV 2 protein fragment in E. coli

Đukić, Teodora; Mladenović, Maja; Stanić-Vučinić, Dragana; Radosavljević, Jelena; Smiljanić, Katarina; Sabljić, Ljiljana; Gnjatović, Marija Lj.; Cujić, Danica; Vasović, Tamara; Simović, Ana; Radomirović, Mirjana Ž.; Ćirković-Veličković, Tanja

(2021)

TY  - CONF
AU  - Đukić, Teodora
AU  - Mladenović, Maja
AU  - Stanić-Vučinić, Dragana
AU  - Radosavljević, Jelena
AU  - Smiljanić, Katarina
AU  - Sabljić, Ljiljana
AU  - Gnjatović, Marija Lj.
AU  - Cujić, Danica
AU  - Vasović, Tamara
AU  - Simović, Ana
AU  - Radomirović, Mirjana Ž.
AU  - Ćirković-Veličković, Tanja
PY  - 2021
UR  - http://cherry.chem.bg.ac.rs/handle/123456789/5735
AB  - Serological testing is important method for diagnosis of severe acute respiratory syndrome coronavirus 2 (SARSCoV-2) infection and for assessment of immunological response after the vaccination. Nucleocapsid (N) protein is the most abundant virus protein and strong immunogen. The aim was develop efficient, low-cost production of N protein large fragment and to characterize it with bottom-up, high-resolution tandem mass spectrometry and immunologically.
SARS-CoV-2 recombinant fragment of nucleocapsid protein (rfNP; 58–419 aa) was expressed in E. coli in soluble form and purified by several chromatographic steps and was subjected to SDS-PAGE and in-gel digested with trypsin.
rfNP was tested in immunoblot using sera of COVID-19 convalescent patients. ELISA was optimized with sera of RT-PCR confirmed positive symptomatic patients and healthy individuals. IgG detection sensitivity was 96% (47/50) and specificity 97% (67/68), while IgM detection was slightly lower. Identity of rfNP was confirmed with high scores and peptide coverage above 80%. Estimation from the value of areas under ion extracted chromatographic curves is that only up to 0,03% of the total band protein quantity belongs to host proteins, while rfNP share is well above 99,9%, resulting in highly pure nucleocapsid protein preparation.
C3  - Proteomics and Metabolomics for Personalized Medicine, XV Italian Proteomics Association Annual Meeting, Catholic University of the Sacred Heart, Roma, Italy, 8th-10th September 2021
T1  - Proteomic and immunological characterization of recombinantly expressed nucleocapsid SARS-CoV 2 protein fragment in E. coli
SP  - 50
EP  - 50
UR  - https://hdl.handle.net/21.15107/rcub_cherry_5735
ER  - 
@conference{
author = "Đukić, Teodora and Mladenović, Maja and Stanić-Vučinić, Dragana and Radosavljević, Jelena and Smiljanić, Katarina and Sabljić, Ljiljana and Gnjatović, Marija Lj. and Cujić, Danica and Vasović, Tamara and Simović, Ana and Radomirović, Mirjana Ž. and Ćirković-Veličković, Tanja",
year = "2021",
abstract = "Serological testing is important method for diagnosis of severe acute respiratory syndrome coronavirus 2 (SARSCoV-2) infection and for assessment of immunological response after the vaccination. Nucleocapsid (N) protein is the most abundant virus protein and strong immunogen. The aim was develop efficient, low-cost production of N protein large fragment and to characterize it with bottom-up, high-resolution tandem mass spectrometry and immunologically.
SARS-CoV-2 recombinant fragment of nucleocapsid protein (rfNP; 58–419 aa) was expressed in E. coli in soluble form and purified by several chromatographic steps and was subjected to SDS-PAGE and in-gel digested with trypsin.
rfNP was tested in immunoblot using sera of COVID-19 convalescent patients. ELISA was optimized with sera of RT-PCR confirmed positive symptomatic patients and healthy individuals. IgG detection sensitivity was 96% (47/50) and specificity 97% (67/68), while IgM detection was slightly lower. Identity of rfNP was confirmed with high scores and peptide coverage above 80%. Estimation from the value of areas under ion extracted chromatographic curves is that only up to 0,03% of the total band protein quantity belongs to host proteins, while rfNP share is well above 99,9%, resulting in highly pure nucleocapsid protein preparation.",
journal = "Proteomics and Metabolomics for Personalized Medicine, XV Italian Proteomics Association Annual Meeting, Catholic University of the Sacred Heart, Roma, Italy, 8th-10th September 2021",
title = "Proteomic and immunological characterization of recombinantly expressed nucleocapsid SARS-CoV 2 protein fragment in E. coli",
pages = "50-50",
url = "https://hdl.handle.net/21.15107/rcub_cherry_5735"
}
Đukić, T., Mladenović, M., Stanić-Vučinić, D., Radosavljević, J., Smiljanić, K., Sabljić, L., Gnjatović, M. Lj., Cujić, D., Vasović, T., Simović, A., Radomirović, M. Ž.,& Ćirković-Veličković, T.. (2021). Proteomic and immunological characterization of recombinantly expressed nucleocapsid SARS-CoV 2 protein fragment in E. coli. in Proteomics and Metabolomics for Personalized Medicine, XV Italian Proteomics Association Annual Meeting, Catholic University of the Sacred Heart, Roma, Italy, 8th-10th September 2021, 50-50.
https://hdl.handle.net/21.15107/rcub_cherry_5735
Đukić T, Mladenović M, Stanić-Vučinić D, Radosavljević J, Smiljanić K, Sabljić L, Gnjatović ML, Cujić D, Vasović T, Simović A, Radomirović MŽ, Ćirković-Veličković T. Proteomic and immunological characterization of recombinantly expressed nucleocapsid SARS-CoV 2 protein fragment in E. coli. in Proteomics and Metabolomics for Personalized Medicine, XV Italian Proteomics Association Annual Meeting, Catholic University of the Sacred Heart, Roma, Italy, 8th-10th September 2021. 2021;:50-50.
https://hdl.handle.net/21.15107/rcub_cherry_5735 .
Đukić, Teodora, Mladenović, Maja, Stanić-Vučinić, Dragana, Radosavljević, Jelena, Smiljanić, Katarina, Sabljić, Ljiljana, Gnjatović, Marija Lj., Cujić, Danica, Vasović, Tamara, Simović, Ana, Radomirović, Mirjana Ž., Ćirković-Veličković, Tanja, "Proteomic and immunological characterization of recombinantly expressed nucleocapsid SARS-CoV 2 protein fragment in E. coli" in Proteomics and Metabolomics for Personalized Medicine, XV Italian Proteomics Association Annual Meeting, Catholic University of the Sacred Heart, Roma, Italy, 8th-10th September 2021 (2021):50-50,
https://hdl.handle.net/21.15107/rcub_cherry_5735 .

Expression, purification and immunological characterization of recombinant protein fragment from SARS-CoV-2

Maja, Mladenović; Đukić, Teodora; Vasović, Tamara; Stanić-Vučinić, Dragana; Smiljanić, Katarina; Radosavljević, Jelena; Sabljić, Ljiljana; Dević, Marija; Cujić, Danica; Ćirković-Veličković, Tanja

(2021)

TY  - CONF
AU  - Maja, Mladenović
AU  - Đukić, Teodora
AU  - Vasović, Tamara
AU  - Stanić-Vučinić, Dragana
AU  - Smiljanić, Katarina
AU  - Radosavljević, Jelena
AU  - Sabljić, Ljiljana
AU  - Dević, Marija
AU  - Cujić, Danica
AU  - Ćirković-Veličković, Tanja
PY  - 2021
UR  - http://cherry.chem.bg.ac.rs/handle/123456789/5737
AB  - Serological testing is important method for diagnosis of severe acute respiratory syndrome coronavirus 2 (SARSCoV-2) infection. Nucleocapsid (N) protein is the most abundant virus derived protein and strong immunogen. We aimed to find its efficient, low-cost production, suitable for serological diagnosis. SARS-CoV-2 recombinant fragment of nucleocapsid protein (rfNP; 58–419 aa) was expressed in E. coli in soluble form, purified by immobilized metal ion affinity chromatography and strong cation exchange chromatography after which it was analyzed by Mass and CD spectrometry and characterized biochemically and immunologically. Purified rfNP has secondary structure of full-length recombinant N protein, with high percentage of disordered structure (34.2%) and of β-sheet (40.7%). rfNP was tested in immunoblot using sera of COVID-19 convalescent patients. ELISA was optimized with sera of RT-PCR confirmed positive symptomatic patients and healthy individuals. IgG detection sensitivity was 96% (47/50) and specificity 97% (67/68), while IgM detection was
slightly lower (94% and 96.5%, respectively). Cost-effective approach for soluble recombinant N protein fragment production was developed, with reliable IgG and IgM antibodies detection of SARS-CoV-2 infection.
C3  - FoodEnTwin Symposium: Novel analytical approaches in food and environmental sciences, June 16-18, 2021 Belgrade, Serbia
T1  - Expression, purification and immunological characterization of recombinant protein fragment from SARS-CoV-2
SP  - 33
EP  - 33
UR  - https://hdl.handle.net/21.15107/rcub_cherry_5737
ER  - 
@conference{
author = "Maja, Mladenović and Đukić, Teodora and Vasović, Tamara and Stanić-Vučinić, Dragana and Smiljanić, Katarina and Radosavljević, Jelena and Sabljić, Ljiljana and Dević, Marija and Cujić, Danica and Ćirković-Veličković, Tanja",
year = "2021",
abstract = "Serological testing is important method for diagnosis of severe acute respiratory syndrome coronavirus 2 (SARSCoV-2) infection. Nucleocapsid (N) protein is the most abundant virus derived protein and strong immunogen. We aimed to find its efficient, low-cost production, suitable for serological diagnosis. SARS-CoV-2 recombinant fragment of nucleocapsid protein (rfNP; 58–419 aa) was expressed in E. coli in soluble form, purified by immobilized metal ion affinity chromatography and strong cation exchange chromatography after which it was analyzed by Mass and CD spectrometry and characterized biochemically and immunologically. Purified rfNP has secondary structure of full-length recombinant N protein, with high percentage of disordered structure (34.2%) and of β-sheet (40.7%). rfNP was tested in immunoblot using sera of COVID-19 convalescent patients. ELISA was optimized with sera of RT-PCR confirmed positive symptomatic patients and healthy individuals. IgG detection sensitivity was 96% (47/50) and specificity 97% (67/68), while IgM detection was
slightly lower (94% and 96.5%, respectively). Cost-effective approach for soluble recombinant N protein fragment production was developed, with reliable IgG and IgM antibodies detection of SARS-CoV-2 infection.",
journal = "FoodEnTwin Symposium: Novel analytical approaches in food and environmental sciences, June 16-18, 2021 Belgrade, Serbia",
title = "Expression, purification and immunological characterization of recombinant protein fragment from SARS-CoV-2",
pages = "33-33",
url = "https://hdl.handle.net/21.15107/rcub_cherry_5737"
}
Maja, M., Đukić, T., Vasović, T., Stanić-Vučinić, D., Smiljanić, K., Radosavljević, J., Sabljić, L., Dević, M., Cujić, D.,& Ćirković-Veličković, T.. (2021). Expression, purification and immunological characterization of recombinant protein fragment from SARS-CoV-2. in FoodEnTwin Symposium: Novel analytical approaches in food and environmental sciences, June 16-18, 2021 Belgrade, Serbia, 33-33.
https://hdl.handle.net/21.15107/rcub_cherry_5737
Maja M, Đukić T, Vasović T, Stanić-Vučinić D, Smiljanić K, Radosavljević J, Sabljić L, Dević M, Cujić D, Ćirković-Veličković T. Expression, purification and immunological characterization of recombinant protein fragment from SARS-CoV-2. in FoodEnTwin Symposium: Novel analytical approaches in food and environmental sciences, June 16-18, 2021 Belgrade, Serbia. 2021;:33-33.
https://hdl.handle.net/21.15107/rcub_cherry_5737 .
Maja, Mladenović, Đukić, Teodora, Vasović, Tamara, Stanić-Vučinić, Dragana, Smiljanić, Katarina, Radosavljević, Jelena, Sabljić, Ljiljana, Dević, Marija, Cujić, Danica, Ćirković-Veličković, Tanja, "Expression, purification and immunological characterization of recombinant protein fragment from SARS-CoV-2" in FoodEnTwin Symposium: Novel analytical approaches in food and environmental sciences, June 16-18, 2021 Belgrade, Serbia (2021):33-33,
https://hdl.handle.net/21.15107/rcub_cherry_5737 .

Trypsin as a proteomic probe to assess food protein digestibility in relation to post- translational modifications

Smiljanić, Katarina; Prodić, Ivana; Đukić, Teodora; Vasović, Tamara; Jovanović, Vesna B.; Ćirković-Veličković, Tanja

(INFOGEST Cost action, INRAE, Teagasc LTD., 2021)

TY  - CONF
AU  - Smiljanić, Katarina
AU  - Prodić, Ivana
AU  - Đukić, Teodora
AU  - Vasović, Tamara
AU  - Jovanović, Vesna B.
AU  - Ćirković-Veličković, Tanja
PY  - 2021
UR  - http://cherry.chem.bg.ac.rs/handle/123456789/5773
AB  - Background: We have undertaken study on our porcine-derived trypsin generated
proteomic data of the major peanut allergen Ara h 1 from the raw and roasted peanut, to
assess possible facilitating/hindrance effects on trypsin digestion efficacy caused by post-
translational and chemical modifications (PTMs) positioned on K/R residues. If potential
hindrance effects caused by PTMs are observed with porcine trypsin, then they can be just
augmented and more pronounced within human intestinal digestion. The logic for such
reasoning is in inferior performance of human trypsin compared to porcine-derived used in
proteomic digestion protocols, also the lower trypsin-to-sample ratio and much shorter
digestion times, even though gastric digestion precedes and trypsin is not the sole digestive
enzyme.
Methods: Novel method was developed to decipher outcomes at scissile bonds using PEAKS
Studio-X+ in reassessment of high-resolution tandem mass spectrometry data on 18h-long
trypsin digestion protocol.
Results: In eight modified K/R residues involving methylation, dihydroxy and formylation,
differences in extent of miscleavage between modified and unmodified peptides, were
significantly higher (>10%) in modified peptides.
Conclusion: It is important to elucidate impact of modifications on trypsin digestion
performance, but also on other proteases involved in digestion process due to possible
effects on allergenicity of food proteins/peptides.
PB  - INFOGEST Cost action, INRAE, Teagasc LTD.
C3  - Virtual International Conference on Food Digestion 6th and 7th May, 2021
T1  - Trypsin as a proteomic probe to assess food protein digestibility in relation to post- translational modifications
SP  - 18
EP  - 18
UR  - https://hdl.handle.net/21.15107/rcub_cherry_5773
ER  - 
@conference{
author = "Smiljanić, Katarina and Prodić, Ivana and Đukić, Teodora and Vasović, Tamara and Jovanović, Vesna B. and Ćirković-Veličković, Tanja",
year = "2021",
abstract = "Background: We have undertaken study on our porcine-derived trypsin generated
proteomic data of the major peanut allergen Ara h 1 from the raw and roasted peanut, to
assess possible facilitating/hindrance effects on trypsin digestion efficacy caused by post-
translational and chemical modifications (PTMs) positioned on K/R residues. If potential
hindrance effects caused by PTMs are observed with porcine trypsin, then they can be just
augmented and more pronounced within human intestinal digestion. The logic for such
reasoning is in inferior performance of human trypsin compared to porcine-derived used in
proteomic digestion protocols, also the lower trypsin-to-sample ratio and much shorter
digestion times, even though gastric digestion precedes and trypsin is not the sole digestive
enzyme.
Methods: Novel method was developed to decipher outcomes at scissile bonds using PEAKS
Studio-X+ in reassessment of high-resolution tandem mass spectrometry data on 18h-long
trypsin digestion protocol.
Results: In eight modified K/R residues involving methylation, dihydroxy and formylation,
differences in extent of miscleavage between modified and unmodified peptides, were
significantly higher (>10%) in modified peptides.
Conclusion: It is important to elucidate impact of modifications on trypsin digestion
performance, but also on other proteases involved in digestion process due to possible
effects on allergenicity of food proteins/peptides.",
publisher = "INFOGEST Cost action, INRAE, Teagasc LTD.",
journal = "Virtual International Conference on Food Digestion 6th and 7th May, 2021",
title = "Trypsin as a proteomic probe to assess food protein digestibility in relation to post- translational modifications",
pages = "18-18",
url = "https://hdl.handle.net/21.15107/rcub_cherry_5773"
}
Smiljanić, K., Prodić, I., Đukić, T., Vasović, T., Jovanović, V. B.,& Ćirković-Veličković, T.. (2021). Trypsin as a proteomic probe to assess food protein digestibility in relation to post- translational modifications. in Virtual International Conference on Food Digestion 6th and 7th May, 2021
INFOGEST Cost action, INRAE, Teagasc LTD.., 18-18.
https://hdl.handle.net/21.15107/rcub_cherry_5773
Smiljanić K, Prodić I, Đukić T, Vasović T, Jovanović VB, Ćirković-Veličković T. Trypsin as a proteomic probe to assess food protein digestibility in relation to post- translational modifications. in Virtual International Conference on Food Digestion 6th and 7th May, 2021. 2021;:18-18.
https://hdl.handle.net/21.15107/rcub_cherry_5773 .
Smiljanić, Katarina, Prodić, Ivana, Đukić, Teodora, Vasović, Tamara, Jovanović, Vesna B., Ćirković-Veličković, Tanja, "Trypsin as a proteomic probe to assess food protein digestibility in relation to post- translational modifications" in Virtual International Conference on Food Digestion 6th and 7th May, 2021 (2021):18-18,
https://hdl.handle.net/21.15107/rcub_cherry_5773 .

Methods Development for Protein and Modifications Profiling

Smiljanić, Katarina; Đukić, Teodora; Vasović, Tamara; Prodić, Ivana; Jovanović, Vesna B.; Ćirković-Veličković, Tanja

(Univerzitet u Beogradu - Hemijski fakultet, 2021)

TY  - CONF
AU  - Smiljanić, Katarina
AU  - Đukić, Teodora
AU  - Vasović, Tamara
AU  - Prodić, Ivana
AU  - Jovanović, Vesna B.
AU  - Ćirković-Veličković, Tanja
PY  - 2021
UR  - http://cherry.chem.bg.ac.rs/handle/123456789/5763
AB  - Post-translational modifications (PTMs) occur in many forms, and broadly influence protein behavior.
High-resolution tandem mass spectrometry coupled with engines for the identification of unspecified
PTMs, is a first-choice method for their global mapping. The significance of untargeted, in-depth PTM
profiling of various proteomes and its method development, just emerged, in contrast to proteomic studies
dealing with few selected static and dynamic modifications. In 2018, we have finalized our first study of
comprehensive analysis of multiple polluted and environmentally preserved Timothy grass pollen
samples that included novel method of relative quantification of proteins expressions and of open,
quantitative PTM profiling. It was among the first ones that has appeared in the proteomics field. In
addition to this, relative quantitative PTMs profiling of the raw and roasted peanut allergens was
completed in 2020, including validation of the method by specific antibodies. This peanut PTM study was
inspiration for the idea that porcine trypsin used in proteomic experiments can serve as a probe to
decipher differences in scissile bond hydrolysis caused by PTMs, with the steric and/or charge changes
causing possible hindrance or facilitation to its activity. We further hypothesized that effects observed
would be even more pronounced with human trypsin, since it is less efficient compared to the porcine
counterpart. Finally, we developed dual manual method to reassess our data of the major peanut allergen
Ara h 1 from the raw and roasted peanut, to confirm or rule out the first hypothesis (do PTMs positioned
on lysine/arginine residues facilitate or hinder porcine trypsin digestion efficacy). We believe that this
topic is relevant from the aspect of human gastrointestinal digestion of food allergens and PTMs
introduced by food processing. For further advancement in this area, novel algorithms based on deep
machine learning, capable of reporting cleavage and miscleavage events separately within unmodified
and modified part of protein sequences are warranted.
PB  - Univerzitet u Beogradu - Hemijski fakultet
C3  - Book of Abstracts of the Final 3rd Workshop FoodenTwin 2021
T1  - Methods Development for Protein and Modifications Profiling
SP  - 11
EP  - 11
UR  - https://hdl.handle.net/21.15107/rcub_cherry_5763
ER  - 
@conference{
author = "Smiljanić, Katarina and Đukić, Teodora and Vasović, Tamara and Prodić, Ivana and Jovanović, Vesna B. and Ćirković-Veličković, Tanja",
year = "2021",
abstract = "Post-translational modifications (PTMs) occur in many forms, and broadly influence protein behavior.
High-resolution tandem mass spectrometry coupled with engines for the identification of unspecified
PTMs, is a first-choice method for their global mapping. The significance of untargeted, in-depth PTM
profiling of various proteomes and its method development, just emerged, in contrast to proteomic studies
dealing with few selected static and dynamic modifications. In 2018, we have finalized our first study of
comprehensive analysis of multiple polluted and environmentally preserved Timothy grass pollen
samples that included novel method of relative quantification of proteins expressions and of open,
quantitative PTM profiling. It was among the first ones that has appeared in the proteomics field. In
addition to this, relative quantitative PTMs profiling of the raw and roasted peanut allergens was
completed in 2020, including validation of the method by specific antibodies. This peanut PTM study was
inspiration for the idea that porcine trypsin used in proteomic experiments can serve as a probe to
decipher differences in scissile bond hydrolysis caused by PTMs, with the steric and/or charge changes
causing possible hindrance or facilitation to its activity. We further hypothesized that effects observed
would be even more pronounced with human trypsin, since it is less efficient compared to the porcine
counterpart. Finally, we developed dual manual method to reassess our data of the major peanut allergen
Ara h 1 from the raw and roasted peanut, to confirm or rule out the first hypothesis (do PTMs positioned
on lysine/arginine residues facilitate or hinder porcine trypsin digestion efficacy). We believe that this
topic is relevant from the aspect of human gastrointestinal digestion of food allergens and PTMs
introduced by food processing. For further advancement in this area, novel algorithms based on deep
machine learning, capable of reporting cleavage and miscleavage events separately within unmodified
and modified part of protein sequences are warranted.",
publisher = "Univerzitet u Beogradu - Hemijski fakultet",
journal = "Book of Abstracts of the Final 3rd Workshop FoodenTwin 2021",
title = "Methods Development for Protein and Modifications Profiling",
pages = "11-11",
url = "https://hdl.handle.net/21.15107/rcub_cherry_5763"
}
Smiljanić, K., Đukić, T., Vasović, T., Prodić, I., Jovanović, V. B.,& Ćirković-Veličković, T.. (2021). Methods Development for Protein and Modifications Profiling. in Book of Abstracts of the Final 3rd Workshop FoodenTwin 2021
Univerzitet u Beogradu - Hemijski fakultet., 11-11.
https://hdl.handle.net/21.15107/rcub_cherry_5763
Smiljanić K, Đukić T, Vasović T, Prodić I, Jovanović VB, Ćirković-Veličković T. Methods Development for Protein and Modifications Profiling. in Book of Abstracts of the Final 3rd Workshop FoodenTwin 2021. 2021;:11-11.
https://hdl.handle.net/21.15107/rcub_cherry_5763 .
Smiljanić, Katarina, Đukić, Teodora, Vasović, Tamara, Prodić, Ivana, Jovanović, Vesna B., Ćirković-Veličković, Tanja, "Methods Development for Protein and Modifications Profiling" in Book of Abstracts of the Final 3rd Workshop FoodenTwin 2021 (2021):11-11,
https://hdl.handle.net/21.15107/rcub_cherry_5763 .

Serological Elisa test development at the INEP Institute

Gnjatović, Marija Lj.; Đukić, Teodora; Stanić-Vučinić, Dragana; Radosavljević, Jelena; Smiljanić, Katarina; Vasović, Tamara; Simović, Ana; Mladenović, Maja; Radomirović, Mirjana Ž.; Ćirković-Veličković, Tanja; Ćujić, Danica R.

(Univerzitet u Beogradu - Hemijski fakultet, 2021)

TY  - CONF
AU  - Gnjatović, Marija Lj.
AU  - Đukić, Teodora
AU  - Stanić-Vučinić, Dragana
AU  - Radosavljević, Jelena
AU  - Smiljanić, Katarina
AU  - Vasović, Tamara
AU  - Simović, Ana
AU  - Mladenović, Maja
AU  - Radomirović, Mirjana Ž.
AU  - Ćirković-Veličković, Tanja
AU  - Ćujić, Danica R.
PY  - 2021
UR  - http://cherry.chem.bg.ac.rs/handle/123456789/5767
AB  - The COVID-19 diagnostic tools are categorized into two main groups of Nucleic Acid (NA)-
based and protein-based tests. To date, nucleic acid-based detection has been announced as the
gold-standard strategy for coronavirus detection; however, protein-based tests are promising
alternatives for rapid and large-scale screening of susceptible groups. During the first months, no
rapid and reliable detecting tool was readily available to adequatly respond to the requirement of
massive testing. The aim was to develope cost-effective, sensitive and rapid screening
mechanisms for the detection of immune response to SARS-CoV2 (which causes COVID-19),
based on the principle of ELISA. The institute INEP has developed tests for detection of IgM
and IgG SARS-CoV-2 specific antibodies based on S and N proteins of virus intended to monitor
different phases of natural infection, ELISA test for IgG detection in naturale infection based on
the use of exclusively domestic components of the ELISA kit (including proteins produced in
Serbia, Faculty of Chemistry) and a test specifically designed to monitor the effects of
immunization (determination of IgG antibodies specific for the RBD domain of S protein). The
tests were independently validated at the relevant laboratories in the country and abroad, and
compared to an FDA/WHO approved tests of a major test producers. All testing for validation
was carried out on samples collected before COVID19 (negative controls), PCR confirmed
COVID19 samples (positive controls) and potencialy cross-reactive samples (other pathogens
and autoimmune diseases). The antibody tests showed high levels of sensitivity and specificity
and extremely low background noises. The kits are extremely stable, have a shelf life of 1 year
and opened kits are usable up to 3 months at storing temperatures of 5°C
PB  - Univerzitet u Beogradu - Hemijski fakultet
C3  - Book of Abstracts of the 3rd Workshop FoodenTwin 2021, Belgrade 15 June
T1  - Serological Elisa test development at the INEP Institute
SP  - 18
EP  - 18
UR  - https://hdl.handle.net/21.15107/rcub_cherry_5767
ER  - 
@conference{
author = "Gnjatović, Marija Lj. and Đukić, Teodora and Stanić-Vučinić, Dragana and Radosavljević, Jelena and Smiljanić, Katarina and Vasović, Tamara and Simović, Ana and Mladenović, Maja and Radomirović, Mirjana Ž. and Ćirković-Veličković, Tanja and Ćujić, Danica R.",
year = "2021",
abstract = "The COVID-19 diagnostic tools are categorized into two main groups of Nucleic Acid (NA)-
based and protein-based tests. To date, nucleic acid-based detection has been announced as the
gold-standard strategy for coronavirus detection; however, protein-based tests are promising
alternatives for rapid and large-scale screening of susceptible groups. During the first months, no
rapid and reliable detecting tool was readily available to adequatly respond to the requirement of
massive testing. The aim was to develope cost-effective, sensitive and rapid screening
mechanisms for the detection of immune response to SARS-CoV2 (which causes COVID-19),
based on the principle of ELISA. The institute INEP has developed tests for detection of IgM
and IgG SARS-CoV-2 specific antibodies based on S and N proteins of virus intended to monitor
different phases of natural infection, ELISA test for IgG detection in naturale infection based on
the use of exclusively domestic components of the ELISA kit (including proteins produced in
Serbia, Faculty of Chemistry) and a test specifically designed to monitor the effects of
immunization (determination of IgG antibodies specific for the RBD domain of S protein). The
tests were independently validated at the relevant laboratories in the country and abroad, and
compared to an FDA/WHO approved tests of a major test producers. All testing for validation
was carried out on samples collected before COVID19 (negative controls), PCR confirmed
COVID19 samples (positive controls) and potencialy cross-reactive samples (other pathogens
and autoimmune diseases). The antibody tests showed high levels of sensitivity and specificity
and extremely low background noises. The kits are extremely stable, have a shelf life of 1 year
and opened kits are usable up to 3 months at storing temperatures of 5°C",
publisher = "Univerzitet u Beogradu - Hemijski fakultet",
journal = "Book of Abstracts of the 3rd Workshop FoodenTwin 2021, Belgrade 15 June",
title = "Serological Elisa test development at the INEP Institute",
pages = "18-18",
url = "https://hdl.handle.net/21.15107/rcub_cherry_5767"
}
Gnjatović, M. Lj., Đukić, T., Stanić-Vučinić, D., Radosavljević, J., Smiljanić, K., Vasović, T., Simović, A., Mladenović, M., Radomirović, M. Ž., Ćirković-Veličković, T.,& Ćujić, D. R.. (2021). Serological Elisa test development at the INEP Institute. in Book of Abstracts of the 3rd Workshop FoodenTwin 2021, Belgrade 15 June
Univerzitet u Beogradu - Hemijski fakultet., 18-18.
https://hdl.handle.net/21.15107/rcub_cherry_5767
Gnjatović ML, Đukić T, Stanić-Vučinić D, Radosavljević J, Smiljanić K, Vasović T, Simović A, Mladenović M, Radomirović MŽ, Ćirković-Veličković T, Ćujić DR. Serological Elisa test development at the INEP Institute. in Book of Abstracts of the 3rd Workshop FoodenTwin 2021, Belgrade 15 June. 2021;:18-18.
https://hdl.handle.net/21.15107/rcub_cherry_5767 .
Gnjatović, Marija Lj., Đukić, Teodora, Stanić-Vučinić, Dragana, Radosavljević, Jelena, Smiljanić, Katarina, Vasović, Tamara, Simović, Ana, Mladenović, Maja, Radomirović, Mirjana Ž., Ćirković-Veličković, Tanja, Ćujić, Danica R., "Serological Elisa test development at the INEP Institute" in Book of Abstracts of the 3rd Workshop FoodenTwin 2021, Belgrade 15 June (2021):18-18,
https://hdl.handle.net/21.15107/rcub_cherry_5767 .

Optimization of expression, purification and HRMS characterization of recombinant N-protein fragment from SARS-CoV-2

Đukić, Teodora; Vasović, Tamara; Mladenović, Maja; Jovanović, Vesna B.; Smiljanić, Katarina; Radosavljević, Jelena; Stanić-Vučinić, Dragana; Ćirković-Veličković, Tanja

(Belgrade : Serbian Biochemical Society, 2021)

TY  - CONF
AU  - Đukić, Teodora
AU  - Vasović, Tamara
AU  - Mladenović, Maja
AU  - Jovanović, Vesna B.
AU  - Smiljanić, Katarina
AU  - Radosavljević, Jelena
AU  - Stanić-Vučinić, Dragana
AU  - Ćirković-Veličković, Tanja
PY  - 2021
UR  - http://cherry.chem.bg.ac.rs/handle/123456789/5774
AB  - Nucleocapsid (N) protein is the most abundant SARS-CoV-2 virus derived protein and strong immunogen which can be used as a component of the immunological tests for the diagnosis of SARS-CoV-2 infection. Recombinant fragment of N-protein (58–419 aa) was expressed in E. coli in a soluble form using developed optimized protocol of expression (16-18h, 37 °C, 0.4 mM IPTG). After lysis of cells, N-protein from soluble fraction of lysate was purified using optimized protocol for purification by immobilized metal affinity chromatography on Ni-Sepharose in two repeated steps under different elution conditions. Obtained fraction of N-protein after the second chromatography was desalted and concentrated using phosphate buffer solution and ultrafiltration. The purity of isolated N-protein was deterrmined by SDS PAGE, while high resolution mass spectrometry was used for its characterization. Isolated N-protein was over 90% purity and identified as the most intense and abundant protein fragment, with PEAKS PTM score of 508 and sequence coverage of over 70%, including 173 unique peptides.
PB  - Belgrade : Serbian Biochemical Society
C3  - Serbian Biochemical Society Tenth Conference
with international participation “Biochemical Insights into Molecular Mechanisms”, Kragujevac, Serbia, 24th September 2021
T1  - Optimization of expression, purification and HRMS characterization of recombinant N-protein fragment from SARS-CoV-2
SP  - 108
EP  - 108
UR  - https://hdl.handle.net/21.15107/rcub_cherry_5774
ER  - 
@conference{
author = "Đukić, Teodora and Vasović, Tamara and Mladenović, Maja and Jovanović, Vesna B. and Smiljanić, Katarina and Radosavljević, Jelena and Stanić-Vučinić, Dragana and Ćirković-Veličković, Tanja",
year = "2021",
abstract = "Nucleocapsid (N) protein is the most abundant SARS-CoV-2 virus derived protein and strong immunogen which can be used as a component of the immunological tests for the diagnosis of SARS-CoV-2 infection. Recombinant fragment of N-protein (58–419 aa) was expressed in E. coli in a soluble form using developed optimized protocol of expression (16-18h, 37 °C, 0.4 mM IPTG). After lysis of cells, N-protein from soluble fraction of lysate was purified using optimized protocol for purification by immobilized metal affinity chromatography on Ni-Sepharose in two repeated steps under different elution conditions. Obtained fraction of N-protein after the second chromatography was desalted and concentrated using phosphate buffer solution and ultrafiltration. The purity of isolated N-protein was deterrmined by SDS PAGE, while high resolution mass spectrometry was used for its characterization. Isolated N-protein was over 90% purity and identified as the most intense and abundant protein fragment, with PEAKS PTM score of 508 and sequence coverage of over 70%, including 173 unique peptides.",
publisher = "Belgrade : Serbian Biochemical Society",
journal = "Serbian Biochemical Society Tenth Conference
with international participation “Biochemical Insights into Molecular Mechanisms”, Kragujevac, Serbia, 24th September 2021",
title = "Optimization of expression, purification and HRMS characterization of recombinant N-protein fragment from SARS-CoV-2",
pages = "108-108",
url = "https://hdl.handle.net/21.15107/rcub_cherry_5774"
}
Đukić, T., Vasović, T., Mladenović, M., Jovanović, V. B., Smiljanić, K., Radosavljević, J., Stanić-Vučinić, D.,& Ćirković-Veličković, T.. (2021). Optimization of expression, purification and HRMS characterization of recombinant N-protein fragment from SARS-CoV-2. in Serbian Biochemical Society Tenth Conference
with international participation “Biochemical Insights into Molecular Mechanisms”, Kragujevac, Serbia, 24th September 2021
Belgrade : Serbian Biochemical Society., 108-108.
https://hdl.handle.net/21.15107/rcub_cherry_5774
Đukić T, Vasović T, Mladenović M, Jovanović VB, Smiljanić K, Radosavljević J, Stanić-Vučinić D, Ćirković-Veličković T. Optimization of expression, purification and HRMS characterization of recombinant N-protein fragment from SARS-CoV-2. in Serbian Biochemical Society Tenth Conference
with international participation “Biochemical Insights into Molecular Mechanisms”, Kragujevac, Serbia, 24th September 2021. 2021;:108-108.
https://hdl.handle.net/21.15107/rcub_cherry_5774 .
Đukić, Teodora, Vasović, Tamara, Mladenović, Maja, Jovanović, Vesna B., Smiljanić, Katarina, Radosavljević, Jelena, Stanić-Vučinić, Dragana, Ćirković-Veličković, Tanja, "Optimization of expression, purification and HRMS characterization of recombinant N-protein fragment from SARS-CoV-2" in Serbian Biochemical Society Tenth Conference
with international participation “Biochemical Insights into Molecular Mechanisms”, Kragujevac, Serbia, 24th September 2021 (2021):108-108,
https://hdl.handle.net/21.15107/rcub_cherry_5774 .

Effects of extraction conditions on proteins' profiles of Tenebrio molitor

Jovanović, Vesna B.; Smiljanić, Katarina; Lujić, Tamara; Đukić, Teodora; Ćirković-Veličković, Tanja

(2021)

TY  - CONF
AU  - Jovanović, Vesna B.
AU  - Smiljanić, Katarina
AU  - Lujić, Tamara
AU  - Đukić, Teodora
AU  - Ćirković-Veličković, Tanja
PY  - 2021
UR  - http://cherry.chem.bg.ac.rs/handle/123456789/5736
AB  - Edible insects are recommended as a future food because of many reasons. The nutritional value of edible insects is one of criteria for the selection of seven most promising species among which is Tenebrio molitor. The objective of this study was to examine the effects of different flour Tenebrio molitor. Twelve different extraction conditions were set up in which three parameters were combined: pH extraction solutions (6, 8 and 12.5), temperature (30 °C and 60 °C), and ultrasound (US). Shotgun proteomics of trypsin digests profiled protein isolates. The highest protein yield was in extractions at pH 12.5. The temperature elevation and US application significantly increased the yield of isolated proteins at pH 12.5 but their solubility at the pH 7.4 was lower compared to isolates at pH 6 and 8. 1D-SDS-PAGE showed marked differences in protein profiles on various extraction conditions, with highest number of the distinctive bands at pH 8 at 30 °C. Shotgun proteomics showed that extraction condition at pH 12.5, on 30 °C has the highest numbers of different proteins, however, among the top 20 abundant proteins are chitin-associated proteins, allergens and proteinases, while at pH 8 these proteins are not enriched. Highly basic extraction significantly contributes to protein hydrolysis while application of US contributes to the protein cross-linking and this effect is more prominent at high temperatures.
C3  - Proteomics and Metabolomics for Personalized Medicine, XV Italian Proteomics Association Annual Meeting, Catholic University of the Sacred Heart, Roma, Italy, 8th-10th September 2021
T1  - Effects of extraction conditions on proteins' profiles of Tenebrio molitor
SP  - 53
EP  - 53
UR  - https://hdl.handle.net/21.15107/rcub_cherry_5736
ER  - 
@conference{
author = "Jovanović, Vesna B. and Smiljanić, Katarina and Lujić, Tamara and Đukić, Teodora and Ćirković-Veličković, Tanja",
year = "2021",
abstract = "Edible insects are recommended as a future food because of many reasons. The nutritional value of edible insects is one of criteria for the selection of seven most promising species among which is Tenebrio molitor. The objective of this study was to examine the effects of different flour Tenebrio molitor. Twelve different extraction conditions were set up in which three parameters were combined: pH extraction solutions (6, 8 and 12.5), temperature (30 °C and 60 °C), and ultrasound (US). Shotgun proteomics of trypsin digests profiled protein isolates. The highest protein yield was in extractions at pH 12.5. The temperature elevation and US application significantly increased the yield of isolated proteins at pH 12.5 but their solubility at the pH 7.4 was lower compared to isolates at pH 6 and 8. 1D-SDS-PAGE showed marked differences in protein profiles on various extraction conditions, with highest number of the distinctive bands at pH 8 at 30 °C. Shotgun proteomics showed that extraction condition at pH 12.5, on 30 °C has the highest numbers of different proteins, however, among the top 20 abundant proteins are chitin-associated proteins, allergens and proteinases, while at pH 8 these proteins are not enriched. Highly basic extraction significantly contributes to protein hydrolysis while application of US contributes to the protein cross-linking and this effect is more prominent at high temperatures.",
journal = "Proteomics and Metabolomics for Personalized Medicine, XV Italian Proteomics Association Annual Meeting, Catholic University of the Sacred Heart, Roma, Italy, 8th-10th September 2021",
title = "Effects of extraction conditions on proteins' profiles of Tenebrio molitor",
pages = "53-53",
url = "https://hdl.handle.net/21.15107/rcub_cherry_5736"
}
Jovanović, V. B., Smiljanić, K., Lujić, T., Đukić, T.,& Ćirković-Veličković, T.. (2021). Effects of extraction conditions on proteins' profiles of Tenebrio molitor. in Proteomics and Metabolomics for Personalized Medicine, XV Italian Proteomics Association Annual Meeting, Catholic University of the Sacred Heart, Roma, Italy, 8th-10th September 2021, 53-53.
https://hdl.handle.net/21.15107/rcub_cherry_5736
Jovanović VB, Smiljanić K, Lujić T, Đukić T, Ćirković-Veličković T. Effects of extraction conditions on proteins' profiles of Tenebrio molitor. in Proteomics and Metabolomics for Personalized Medicine, XV Italian Proteomics Association Annual Meeting, Catholic University of the Sacred Heart, Roma, Italy, 8th-10th September 2021. 2021;:53-53.
https://hdl.handle.net/21.15107/rcub_cherry_5736 .
Jovanović, Vesna B., Smiljanić, Katarina, Lujić, Tamara, Đukić, Teodora, Ćirković-Veličković, Tanja, "Effects of extraction conditions on proteins' profiles of Tenebrio molitor" in Proteomics and Metabolomics for Personalized Medicine, XV Italian Proteomics Association Annual Meeting, Catholic University of the Sacred Heart, Roma, Italy, 8th-10th September 2021 (2021):53-53,
https://hdl.handle.net/21.15107/rcub_cherry_5736 .

Comparative quantitative immunoproteomic study of raw and roasted peanut major allergen modifications

MIhilović, Jelena; Đukić, Teodora; Smiljanić, Katarina; Apostolović, Danijela; Liu, Shu-Hua; Epstein, Michelle M.; Ćirković-Veličković, Tanja

(2021)

TY  - CONF
AU  - MIhilović, Jelena
AU  - Đukić, Teodora
AU  - Smiljanić, Katarina
AU  - Apostolović, Danijela
AU  - Liu, Shu-Hua
AU  - Epstein, Michelle M.
AU  - Ćirković-Veličković, Tanja
PY  - 2021
UR  - http://cherry.chem.bg.ac.rs/handle/123456789/5739
AB  - Peanut allergy affects approximately up to 3 % of children and up to 2 % of the adult world population, causing reactions ranging from mild to severe. Major peanut allergens are well characterized but little is known about their post-translational modifications and even less is known about the influence of thermal treatment on their profile. Protein post-translational modification patterns may differ between raw and thermally treated peanuts, which could affect its functional properties, such as allergic potential. In this study we combined proteomic and immunological methods to characterize the modifications or proteoforms of four major peanut allergens - Ara h 1, Ara h 2, Ara h 3 and Ara h 6 in raw and roasted peanut. Bottom-up high-resolution accurate mass spectrometry and a specialized proteomics software package to identify, map and compare modifications of major peanut allergens between differently treated peanut kernels. Modification-specific antibody western blot was used to confirm the presence of modifications on major allergens in both extracts. Twenty different post-translational modifications in four prominent peanut allergens (Ara h 1-3, 6) were identified, while twelve were quantitatively compared between raw and roasted peanuts by high-resolution mass spectrometry and a proprietary proteomics software. post-translational modification specific antibodies confirmed the presence of these modifications in western-blots of raw and roasted peanuts. This study initiates appreciation of modifications and thermal processing affecting food quality, and development of state-of-the-art methodology in the risk assessment of allergen contamination.
C3  - FoodEnTwin Symposium: Novel analytical approaches in food and environmental sciences, June 16-18, 2021 Belgrade, Serbia
T1  - Comparative quantitative immunoproteomic study of raw and roasted peanut major allergen modifications
SP  - 27
EP  - 27
UR  - https://hdl.handle.net/21.15107/rcub_cherry_5739
ER  - 
@conference{
author = "MIhilović, Jelena and Đukić, Teodora and Smiljanić, Katarina and Apostolović, Danijela and Liu, Shu-Hua and Epstein, Michelle M. and Ćirković-Veličković, Tanja",
year = "2021",
abstract = "Peanut allergy affects approximately up to 3 % of children and up to 2 % of the adult world population, causing reactions ranging from mild to severe. Major peanut allergens are well characterized but little is known about their post-translational modifications and even less is known about the influence of thermal treatment on their profile. Protein post-translational modification patterns may differ between raw and thermally treated peanuts, which could affect its functional properties, such as allergic potential. In this study we combined proteomic and immunological methods to characterize the modifications or proteoforms of four major peanut allergens - Ara h 1, Ara h 2, Ara h 3 and Ara h 6 in raw and roasted peanut. Bottom-up high-resolution accurate mass spectrometry and a specialized proteomics software package to identify, map and compare modifications of major peanut allergens between differently treated peanut kernels. Modification-specific antibody western blot was used to confirm the presence of modifications on major allergens in both extracts. Twenty different post-translational modifications in four prominent peanut allergens (Ara h 1-3, 6) were identified, while twelve were quantitatively compared between raw and roasted peanuts by high-resolution mass spectrometry and a proprietary proteomics software. post-translational modification specific antibodies confirmed the presence of these modifications in western-blots of raw and roasted peanuts. This study initiates appreciation of modifications and thermal processing affecting food quality, and development of state-of-the-art methodology in the risk assessment of allergen contamination.",
journal = "FoodEnTwin Symposium: Novel analytical approaches in food and environmental sciences, June 16-18, 2021 Belgrade, Serbia",
title = "Comparative quantitative immunoproteomic study of raw and roasted peanut major allergen modifications",
pages = "27-27",
url = "https://hdl.handle.net/21.15107/rcub_cherry_5739"
}
MIhilović, J., Đukić, T., Smiljanić, K., Apostolović, D., Liu, S., Epstein, M. M.,& Ćirković-Veličković, T.. (2021). Comparative quantitative immunoproteomic study of raw and roasted peanut major allergen modifications. in FoodEnTwin Symposium: Novel analytical approaches in food and environmental sciences, June 16-18, 2021 Belgrade, Serbia, 27-27.
https://hdl.handle.net/21.15107/rcub_cherry_5739
MIhilović J, Đukić T, Smiljanić K, Apostolović D, Liu S, Epstein MM, Ćirković-Veličković T. Comparative quantitative immunoproteomic study of raw and roasted peanut major allergen modifications. in FoodEnTwin Symposium: Novel analytical approaches in food and environmental sciences, June 16-18, 2021 Belgrade, Serbia. 2021;:27-27.
https://hdl.handle.net/21.15107/rcub_cherry_5739 .
MIhilović, Jelena, Đukić, Teodora, Smiljanić, Katarina, Apostolović, Danijela, Liu, Shu-Hua, Epstein, Michelle M., Ćirković-Veličković, Tanja, "Comparative quantitative immunoproteomic study of raw and roasted peanut major allergen modifications" in FoodEnTwin Symposium: Novel analytical approaches in food and environmental sciences, June 16-18, 2021 Belgrade, Serbia (2021):27-27,
https://hdl.handle.net/21.15107/rcub_cherry_5739 .

Trypsin as a Proteomic Probe for Assessment of Food Protein Digestibility in Relation to Chemical and Post-translational Modifications

Smiljanić, Katarina; Mihailović, Jelena; Prodić, Ivana; Đukić, Teodora; Vasović, Tamara; Jovanović, Vesna B.; Ćirković-Veličković, Tanja

(New York : Nova Science Publisher, 2020)

TY  - CHAP
AU  - Smiljanić, Katarina
AU  - Mihailović, Jelena
AU  - Prodić, Ivana
AU  - Đukić, Teodora
AU  - Vasović, Tamara
AU  - Jovanović, Vesna B.
AU  - Ćirković-Veličković, Tanja
PY  - 2020
UR  - http://cherry.chem.bg.ac.rs/handle/123456789/5728
AB  - Post-translational modifications (PTMs) occur in many forms and shapes, widely influencing protein behavior. High-resolution tandem mass spectrometry (HRMS/MS), coupled with dedicated engines for the identification of unspecified PTMs, is a powerful method for their mapping. 
A majority of proteomic experiments utilize trypsin for digestion, which cleaves the C-terminal peptide bonds of arginine (Arg) and lysine (Lys) amino acids with high catalytic efficiency and selectivity, unless they are followed with proline. At the same time, Arg and Lys residues are frequently modified during food processing by heat and non-thermal treatments, causing oxidation, carbamylation, and various forms of side chain carbonylation, including the other common PTMs (methylation, acetylation, etc.). Consequently, we explored the possibility to re-assess already generated proteomic data (food protein/allergen tryptic peptides) with respect to the possible modulation of the tryptic intestinal digestion pattern caused by PTMs incorporated at Arg and Lys residues. However, most of the proteomic bottom-up experiments are run with porcine trypsin that has been reductively methylated to increase its stability and minimize autoproteolytic effects. Therefore, in this chapter, the utility of the aforementioned idea was explored, by reviewing the differences in structure, affinity, specificity, and catalytic efficiency of trypsin, primarily from porcine, bovine and human species. Porcine trypsin either from pancreas or in recombinant form showed superior performance compared to human and bovine tryptic counterparts. In addition, set of software tools for identification and analyses of PTMs was reviewed with the aim to isolate those capable of in-depth PTMs profiling and their simultaneous relative quantification, such as PEAKS PTM (PEAKS Studio, Bioinformatics Solution Inc., Ontario Canada). Based on our preliminary experimental results, conclusion is that the proposed idea is plausible, because if potential hindrance effects caused by PTMs are observed with porcine trypsin, then they can be just augmented within human intestinal digestion, with respect to inferior performance of human trypsin.
PB  - New York : Nova Science Publisher
T2  - A Closer Look at Proteolysis: Biochemistry and Molecular Biology in the Post Genomic Era
T1  - Trypsin as a Proteomic Probe for Assessment of Food Protein Digestibility in Relation to Chemical and Post-translational Modifications
VL  - 4
SP  - 158
UR  - https://hdl.handle.net/21.15107/rcub_cherry_5728
ER  - 
@inbook{
author = "Smiljanić, Katarina and Mihailović, Jelena and Prodić, Ivana and Đukić, Teodora and Vasović, Tamara and Jovanović, Vesna B. and Ćirković-Veličković, Tanja",
year = "2020",
abstract = "Post-translational modifications (PTMs) occur in many forms and shapes, widely influencing protein behavior. High-resolution tandem mass spectrometry (HRMS/MS), coupled with dedicated engines for the identification of unspecified PTMs, is a powerful method for their mapping. 
A majority of proteomic experiments utilize trypsin for digestion, which cleaves the C-terminal peptide bonds of arginine (Arg) and lysine (Lys) amino acids with high catalytic efficiency and selectivity, unless they are followed with proline. At the same time, Arg and Lys residues are frequently modified during food processing by heat and non-thermal treatments, causing oxidation, carbamylation, and various forms of side chain carbonylation, including the other common PTMs (methylation, acetylation, etc.). Consequently, we explored the possibility to re-assess already generated proteomic data (food protein/allergen tryptic peptides) with respect to the possible modulation of the tryptic intestinal digestion pattern caused by PTMs incorporated at Arg and Lys residues. However, most of the proteomic bottom-up experiments are run with porcine trypsin that has been reductively methylated to increase its stability and minimize autoproteolytic effects. Therefore, in this chapter, the utility of the aforementioned idea was explored, by reviewing the differences in structure, affinity, specificity, and catalytic efficiency of trypsin, primarily from porcine, bovine and human species. Porcine trypsin either from pancreas or in recombinant form showed superior performance compared to human and bovine tryptic counterparts. In addition, set of software tools for identification and analyses of PTMs was reviewed with the aim to isolate those capable of in-depth PTMs profiling and their simultaneous relative quantification, such as PEAKS PTM (PEAKS Studio, Bioinformatics Solution Inc., Ontario Canada). Based on our preliminary experimental results, conclusion is that the proposed idea is plausible, because if potential hindrance effects caused by PTMs are observed with porcine trypsin, then they can be just augmented within human intestinal digestion, with respect to inferior performance of human trypsin.",
publisher = "New York : Nova Science Publisher",
journal = "A Closer Look at Proteolysis: Biochemistry and Molecular Biology in the Post Genomic Era",
booktitle = "Trypsin as a Proteomic Probe for Assessment of Food Protein Digestibility in Relation to Chemical and Post-translational Modifications",
volume = "4",
pages = "158",
url = "https://hdl.handle.net/21.15107/rcub_cherry_5728"
}
Smiljanić, K., Mihailović, J., Prodić, I., Đukić, T., Vasović, T., Jovanović, V. B.,& Ćirković-Veličković, T.. (2020). Trypsin as a Proteomic Probe for Assessment of Food Protein Digestibility in Relation to Chemical and Post-translational Modifications. in A Closer Look at Proteolysis: Biochemistry and Molecular Biology in the Post Genomic Era
New York : Nova Science Publisher., 4, 158.
https://hdl.handle.net/21.15107/rcub_cherry_5728
Smiljanić K, Mihailović J, Prodić I, Đukić T, Vasović T, Jovanović VB, Ćirković-Veličković T. Trypsin as a Proteomic Probe for Assessment of Food Protein Digestibility in Relation to Chemical and Post-translational Modifications. in A Closer Look at Proteolysis: Biochemistry and Molecular Biology in the Post Genomic Era. 2020;4:158.
https://hdl.handle.net/21.15107/rcub_cherry_5728 .
Smiljanić, Katarina, Mihailović, Jelena, Prodić, Ivana, Đukić, Teodora, Vasović, Tamara, Jovanović, Vesna B., Ćirković-Veličković, Tanja, "Trypsin as a Proteomic Probe for Assessment of Food Protein Digestibility in Relation to Chemical and Post-translational Modifications" in A Closer Look at Proteolysis: Biochemistry and Molecular Biology in the Post Genomic Era, 4 (2020):158,
https://hdl.handle.net/21.15107/rcub_cherry_5728 .

Immunoproteomics study of raw and roasted major peanut allergen post translational modifications (PTMs)

Mihailović, Jelena; Apostolović, Danijela; Smiljanić, Katarina; Đukić, Teodora; Prodić, Ivana; Ćirković-Veličković, Tanja

(Medical University of Vienna - MUW, 2020)

TY  - CONF
AU  - Mihailović, Jelena
AU  - Apostolović, Danijela
AU  - Smiljanić, Katarina
AU  - Đukić, Teodora
AU  - Prodić, Ivana
AU  - Ćirković-Veličković, Tanja
PY  - 2020
UR  - http://cherry.chem.bg.ac.rs/handle/123456789/5727
PB  - Medical University of Vienna - MUW
C3  - Abstract Book of the 2nd FoodEnTwin Workshop “Experimental Animal models for food and environment”, Vienna, February 6-7, 2020
T1  - Immunoproteomics study of raw and roasted major peanut allergen post translational modifications (PTMs)
SP  - 1
EP  - 7
UR  - https://hdl.handle.net/21.15107/rcub_cherry_5727
ER  - 
@conference{
author = "Mihailović, Jelena and Apostolović, Danijela and Smiljanić, Katarina and Đukić, Teodora and Prodić, Ivana and Ćirković-Veličković, Tanja",
year = "2020",
publisher = "Medical University of Vienna - MUW",
journal = "Abstract Book of the 2nd FoodEnTwin Workshop “Experimental Animal models for food and environment”, Vienna, February 6-7, 2020",
title = "Immunoproteomics study of raw and roasted major peanut allergen post translational modifications (PTMs)",
pages = "1-7",
url = "https://hdl.handle.net/21.15107/rcub_cherry_5727"
}
Mihailović, J., Apostolović, D., Smiljanić, K., Đukić, T., Prodić, I.,& Ćirković-Veličković, T.. (2020). Immunoproteomics study of raw and roasted major peanut allergen post translational modifications (PTMs). in Abstract Book of the 2nd FoodEnTwin Workshop “Experimental Animal models for food and environment”, Vienna, February 6-7, 2020
Medical University of Vienna - MUW., 1-7.
https://hdl.handle.net/21.15107/rcub_cherry_5727
Mihailović J, Apostolović D, Smiljanić K, Đukić T, Prodić I, Ćirković-Veličković T. Immunoproteomics study of raw and roasted major peanut allergen post translational modifications (PTMs). in Abstract Book of the 2nd FoodEnTwin Workshop “Experimental Animal models for food and environment”, Vienna, February 6-7, 2020. 2020;:1-7.
https://hdl.handle.net/21.15107/rcub_cherry_5727 .
Mihailović, Jelena, Apostolović, Danijela, Smiljanić, Katarina, Đukić, Teodora, Prodić, Ivana, Ćirković-Veličković, Tanja, "Immunoproteomics study of raw and roasted major peanut allergen post translational modifications (PTMs)" in Abstract Book of the 2nd FoodEnTwin Workshop “Experimental Animal models for food and environment”, Vienna, February 6-7, 2020 (2020):1-7,
https://hdl.handle.net/21.15107/rcub_cherry_5727 .

Impact of oxidative stress on plant proteins modifications: relevance for plant allergens

Smiljanić, Katarina; Mihailović, Jelena; Đukić, Teodora; Ćirković-Veličković, Tanja

(2019)

TY  - CONF
AU  - Smiljanić, Katarina
AU  - Mihailović, Jelena
AU  - Đukić, Teodora
AU  - Ćirković-Veličković, Tanja
PY  - 2019
UR  - https://cherry.chem.bg.ac.rs/handle/123456789/3745
C3  - Book of Abstracts,4th Edition of Global Conference on Plant Science and Molecular Biology
T1  - Impact of oxidative stress on plant proteins modifications: relevance for plant allergens
SP  - 130
EP  - 130
UR  - https://hdl.handle.net/21.15107/rcub_cherry_3745
ER  - 
@conference{
author = "Smiljanić, Katarina and Mihailović, Jelena and Đukić, Teodora and Ćirković-Veličković, Tanja",
year = "2019",
journal = "Book of Abstracts,4th Edition of Global Conference on Plant Science and Molecular Biology",
title = "Impact of oxidative stress on plant proteins modifications: relevance for plant allergens",
pages = "130-130",
url = "https://hdl.handle.net/21.15107/rcub_cherry_3745"
}
Smiljanić, K., Mihailović, J., Đukić, T.,& Ćirković-Veličković, T.. (2019). Impact of oxidative stress on plant proteins modifications: relevance for plant allergens. in Book of Abstracts,4th Edition of Global Conference on Plant Science and Molecular Biology, 130-130.
https://hdl.handle.net/21.15107/rcub_cherry_3745
Smiljanić K, Mihailović J, Đukić T, Ćirković-Veličković T. Impact of oxidative stress on plant proteins modifications: relevance for plant allergens. in Book of Abstracts,4th Edition of Global Conference on Plant Science and Molecular Biology. 2019;:130-130.
https://hdl.handle.net/21.15107/rcub_cherry_3745 .
Smiljanić, Katarina, Mihailović, Jelena, Đukić, Teodora, Ćirković-Veličković, Tanja, "Impact of oxidative stress on plant proteins modifications: relevance for plant allergens" in Book of Abstracts,4th Edition of Global Conference on Plant Science and Molecular Biology (2019):130-130,
https://hdl.handle.net/21.15107/rcub_cherry_3745 .