Obradović, Milan

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orcid::0000-0002-4769-2652
  • Obradović, Milan (3)
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Author's Bibliography

Thrombin stimulates VSMC proliferation through an EGFR-dependent pathway: involvement of MMP-2

Smiljanić, Katarina; Obradović, Milan; Jovanovic, Aleksandra; Popović-Đorđević, Jelena; Dobutović, Branislava; Jevremovic, Danimir; Marche, Pierre; Isenovic, Esma R.

(Springer, Dordrecht, 2014)

TY  - JOUR
AU  - Smiljanić, Katarina
AU  - Obradović, Milan
AU  - Jovanovic, Aleksandra
AU  - Popović-Đorđević, Jelena
AU  - Dobutović, Branislava
AU  - Jevremovic, Danimir
AU  - Marche, Pierre
AU  - Isenovic, Esma R.
PY  - 2014
UR  - https://cherry.chem.bg.ac.rs/handle/123456789/1853
AB  - In this study, the role of epidermal growth factor receptor (EGFR), extracellular signal-regulated kinase (ERK1/2), heparin-binding EGF-like growth factor (HB-EGF), general metalloproteinases, matrix metalloproteinases-2 (MMP-2) in mediating the mitogenic action of thrombin in rat vascular smooth muscle cells (VSMC) was investigated. The incubation of rat VSMC with thrombin (1 U/ml) for 5 min resulted in significant (p  lt  0.001) increase of ERK1/2 phosphorylation by 8.7 +/- A 0.9-fold, EGFR phosphorylation by 8.5 +/- A 1.3-fold (p  lt  0.001) and DNA synthesis by 3.6 +/- A 0.4-fold (p  lt  0.001). Separate 30-min pretreatments with EGFR tyrosine kinase irreversible inhibitor, 10 A mu M PD169540 (PD), and 20 A mu M anti-HB-EGF antibody significantly reduced thrombin-stimulated EGFR and ERK1/2 phosphorylation by 81, 72 % and by 48 and 61 %, respectively. Furthermore, the same pretreatments with PD or anti-HB-EGF antibody reduced thrombin-induced VSMC proliferation by 44 and 45 %, respectively. In addition, 30-min pretreatments with 10 A mu M specific MMP-2 inhibitor significantly reduced thrombin-stimulated phosphorylation of both EGFR and ERK1/2 by 25 %. Moreover, the same pretreatment with MMP-2 inhibitor reduced thrombin-induced VSMC proliferation by 45 %. These results show that the thrombin-induced DNA synthesis correlates with the level of ERK1/2 activation rather than EGFR activation. These results further suggest that thrombin acts through EGFR and ERK 1/2 signaling pathways involving MMP-2 to upregulate proliferation of VSMC.
PB  - Springer, Dordrecht
T2  - Molecular and Cellular Biochemistry
T1  - Thrombin stimulates VSMC proliferation through an EGFR-dependent pathway: involvement of MMP-2
VL  - 396
IS  - 1-2
SP  - 147
EP  - 160
DO  - 10.1007/s11010-014-2151-y
ER  - 
@article{
author = "Smiljanić, Katarina and Obradović, Milan and Jovanovic, Aleksandra and Popović-Đorđević, Jelena and Dobutović, Branislava and Jevremovic, Danimir and Marche, Pierre and Isenovic, Esma R.",
year = "2014",
abstract = "In this study, the role of epidermal growth factor receptor (EGFR), extracellular signal-regulated kinase (ERK1/2), heparin-binding EGF-like growth factor (HB-EGF), general metalloproteinases, matrix metalloproteinases-2 (MMP-2) in mediating the mitogenic action of thrombin in rat vascular smooth muscle cells (VSMC) was investigated. The incubation of rat VSMC with thrombin (1 U/ml) for 5 min resulted in significant (p  lt  0.001) increase of ERK1/2 phosphorylation by 8.7 +/- A 0.9-fold, EGFR phosphorylation by 8.5 +/- A 1.3-fold (p  lt  0.001) and DNA synthesis by 3.6 +/- A 0.4-fold (p  lt  0.001). Separate 30-min pretreatments with EGFR tyrosine kinase irreversible inhibitor, 10 A mu M PD169540 (PD), and 20 A mu M anti-HB-EGF antibody significantly reduced thrombin-stimulated EGFR and ERK1/2 phosphorylation by 81, 72 % and by 48 and 61 %, respectively. Furthermore, the same pretreatments with PD or anti-HB-EGF antibody reduced thrombin-induced VSMC proliferation by 44 and 45 %, respectively. In addition, 30-min pretreatments with 10 A mu M specific MMP-2 inhibitor significantly reduced thrombin-stimulated phosphorylation of both EGFR and ERK1/2 by 25 %. Moreover, the same pretreatment with MMP-2 inhibitor reduced thrombin-induced VSMC proliferation by 45 %. These results show that the thrombin-induced DNA synthesis correlates with the level of ERK1/2 activation rather than EGFR activation. These results further suggest that thrombin acts through EGFR and ERK 1/2 signaling pathways involving MMP-2 to upregulate proliferation of VSMC.",
publisher = "Springer, Dordrecht",
journal = "Molecular and Cellular Biochemistry",
title = "Thrombin stimulates VSMC proliferation through an EGFR-dependent pathway: involvement of MMP-2",
volume = "396",
number = "1-2",
pages = "147-160",
doi = "10.1007/s11010-014-2151-y"
}
Smiljanić, K., Obradović, M., Jovanovic, A., Popović-Đorđević, J., Dobutović, B., Jevremovic, D., Marche, P.,& Isenovic, E. R.. (2014). Thrombin stimulates VSMC proliferation through an EGFR-dependent pathway: involvement of MMP-2. in Molecular and Cellular Biochemistry
Springer, Dordrecht., 396(1-2), 147-160.
https://doi.org/10.1007/s11010-014-2151-y
Smiljanić K, Obradović M, Jovanovic A, Popović-Đorđević J, Dobutović B, Jevremovic D, Marche P, Isenovic ER. Thrombin stimulates VSMC proliferation through an EGFR-dependent pathway: involvement of MMP-2. in Molecular and Cellular Biochemistry. 2014;396(1-2):147-160.
doi:10.1007/s11010-014-2151-y .
Smiljanić, Katarina, Obradović, Milan, Jovanovic, Aleksandra, Popović-Đorđević, Jelena, Dobutović, Branislava, Jevremovic, Danimir, Marche, Pierre, Isenovic, Esma R., "Thrombin stimulates VSMC proliferation through an EGFR-dependent pathway: involvement of MMP-2" in Molecular and Cellular Biochemistry, 396, no. 1-2 (2014):147-160,
https://doi.org/10.1007/s11010-014-2151-y . .
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Role of the epidermal growth factor receptor in thrombin regulated vascular smooth muscle cells proliferation

Smiljanić, Katarina; Resanović, I.; Savić, Kristina; Jovanović, A.; Zafirović, S.; Obradović, Milan; Isenović, E. R.

(Univerzitet u Beogradu - Medicinski fakultet, 2013)

TY  - JOUR
AU  - Smiljanić, Katarina
AU  - Resanović, I.
AU  - Savić, Kristina
AU  - Jovanović, A.
AU  - Zafirović, S.
AU  - Obradović, Milan
AU  - Isenović, E. R.
PY  - 2013
UR  - http://cherry.chem.bg.ac.rs/handle/123456789/6449
AB  - Zajednički činilac u nastanku vaskularnih oboljenja kao što su ateroskleroza, restenoza i hipertenzija je patološka proliferacija i akumulacija glatkih mišićnih ćelija krvnog suda (VSMC) u njegov unutrašnji (intima) sloj.  Trombin, ključni hormon koagulacionoaterogenetske mreže posreduje u regulisanju tonusa i propustljivosti krvnih sudova, migracije i proliferacije VSMC, privlačenja monocita i raznih proinflamatornih markera u aterosklerotske lezije i svoje efekte ostvaruje direktno kao serinska proteinaza i aktivacijom svojih receptora spregnutih sa G proteinom (GPCR). Pokazano je da trombin posreduje u proliferaciji VSMC transaktivacijom receptora za epidermalni faktor rasta (EGFR). Proces transaktivacije EGFR preko aktivacije trombinskih receptora, uključuje metaloproteinaze koje generišu ligande proteolitičkim cepanjem membranskih prekursora, kao što je heparin vezujući epidermalni faktor rasta (HB-EGF) koji se vezuje za EGFR i aktivira ga, što vodi proliferaciji VSMC preko nishodnih, signalnih puteva mitogenom aktiviranih protein kinaza (MAPK).  U okviru ovog preglednog članka su prikazani i diskutovani novi literaturni podaci koji se odnose na: ulogu aktivacije EGFR u posredovanju proliferativnog efekta trombina na VSMC, razumevanje i reviziju koncepta trostruke kaskade transaktivacije EGFR stimulisane trombinom u mehanizmu proliferacije VSMC.
AB  - The common factor in the development of
vascular diseases, such as atherosclerosis,
hypertension and restenosis, is excessive accumulation
and proliferation of vascular smooth muscle cells
(VSMC) within inner (intima) layer of vessel wall.
 Thrombin, a key player in athero-coagulation
maze, mediates the regulation of vascular permeability
and contraction, migration and proliferation of VSMC,
attracting monocytes and a variety of proinflammatory markers in atherosclerotic lesions.
Thrombin exerts its effects either directly as serine
proteinases and/or via activation of its G proteins
coupled receptors (GPCR). It has been shown that
thrombin mediates transactivation of epidermal growth
factor receptor (EGFR) within the process of VSMC
proliferation. EGFR transactivation process through
the activation of thrombin protease activated receptor
(PAR), includes a matrix metalloproteinase cleavage of
membrane ligands precursors such as epidermal
growth factor like growth factor that binds heparin
(HB-EGF) that binds to the EGFR and activates it,
leading to VSMC proliferation via downstream
signaling pathways of mitogen activated protein kinase
(MAPK).
 This review article presents review of the new
literature data concerning: the role of EGFR
activation in mediating the proliferative effect of
thrombin in VSMC and understanding of the concept of
the triple cascade of EGFR transactivation stimulated
by thrombin in the mechanism of VSMC proliferation.
PB  - Univerzitet u Beogradu - Medicinski fakultet
T2  - Medicinska Istraživanja
T1  - Role of the epidermal growth factor receptor in thrombin regulated vascular smooth muscle cells proliferation
T1  - Uloga receptora za epidermalni faktor rasta u trombinom regulisanoj proliferaciji glatkih mišićnih ćelija krvnih sudova
VL  - 47
IS  - 1
SP  - 10
EP  - 20
DO  - 10.5937/MedIst1301005S
ER  - 
@article{
author = "Smiljanić, Katarina and Resanović, I. and Savić, Kristina and Jovanović, A. and Zafirović, S. and Obradović, Milan and Isenović, E. R.",
year = "2013",
abstract = "Zajednički činilac u nastanku vaskularnih oboljenja kao što su ateroskleroza, restenoza i hipertenzija je patološka proliferacija i akumulacija glatkih mišićnih ćelija krvnog suda (VSMC) u njegov unutrašnji (intima) sloj.  Trombin, ključni hormon koagulacionoaterogenetske mreže posreduje u regulisanju tonusa i propustljivosti krvnih sudova, migracije i proliferacije VSMC, privlačenja monocita i raznih proinflamatornih markera u aterosklerotske lezije i svoje efekte ostvaruje direktno kao serinska proteinaza i aktivacijom svojih receptora spregnutih sa G proteinom (GPCR). Pokazano je da trombin posreduje u proliferaciji VSMC transaktivacijom receptora za epidermalni faktor rasta (EGFR). Proces transaktivacije EGFR preko aktivacije trombinskih receptora, uključuje metaloproteinaze koje generišu ligande proteolitičkim cepanjem membranskih prekursora, kao što je heparin vezujući epidermalni faktor rasta (HB-EGF) koji se vezuje za EGFR i aktivira ga, što vodi proliferaciji VSMC preko nishodnih, signalnih puteva mitogenom aktiviranih protein kinaza (MAPK).  U okviru ovog preglednog članka su prikazani i diskutovani novi literaturni podaci koji se odnose na: ulogu aktivacije EGFR u posredovanju proliferativnog efekta trombina na VSMC, razumevanje i reviziju koncepta trostruke kaskade transaktivacije EGFR stimulisane trombinom u mehanizmu proliferacije VSMC., The common factor in the development of
vascular diseases, such as atherosclerosis,
hypertension and restenosis, is excessive accumulation
and proliferation of vascular smooth muscle cells
(VSMC) within inner (intima) layer of vessel wall.
 Thrombin, a key player in athero-coagulation
maze, mediates the regulation of vascular permeability
and contraction, migration and proliferation of VSMC,
attracting monocytes and a variety of proinflammatory markers in atherosclerotic lesions.
Thrombin exerts its effects either directly as serine
proteinases and/or via activation of its G proteins
coupled receptors (GPCR). It has been shown that
thrombin mediates transactivation of epidermal growth
factor receptor (EGFR) within the process of VSMC
proliferation. EGFR transactivation process through
the activation of thrombin protease activated receptor
(PAR), includes a matrix metalloproteinase cleavage of
membrane ligands precursors such as epidermal
growth factor like growth factor that binds heparin
(HB-EGF) that binds to the EGFR and activates it,
leading to VSMC proliferation via downstream
signaling pathways of mitogen activated protein kinase
(MAPK).
 This review article presents review of the new
literature data concerning: the role of EGFR
activation in mediating the proliferative effect of
thrombin in VSMC and understanding of the concept of
the triple cascade of EGFR transactivation stimulated
by thrombin in the mechanism of VSMC proliferation.",
publisher = "Univerzitet u Beogradu - Medicinski fakultet",
journal = "Medicinska Istraživanja",
title = "Role of the epidermal growth factor receptor in thrombin regulated vascular smooth muscle cells proliferation, Uloga receptora za epidermalni faktor rasta u trombinom regulisanoj proliferaciji glatkih mišićnih ćelija krvnih sudova",
volume = "47",
number = "1",
pages = "10-20",
doi = "10.5937/MedIst1301005S"
}
Smiljanić, K., Resanović, I., Savić, K., Jovanović, A., Zafirović, S., Obradović, M.,& Isenović, E. R.. (2013). Role of the epidermal growth factor receptor in thrombin regulated vascular smooth muscle cells proliferation. in Medicinska Istraživanja
Univerzitet u Beogradu - Medicinski fakultet., 47(1), 10-20.
https://doi.org/10.5937/MedIst1301005S
Smiljanić K, Resanović I, Savić K, Jovanović A, Zafirović S, Obradović M, Isenović ER. Role of the epidermal growth factor receptor in thrombin regulated vascular smooth muscle cells proliferation. in Medicinska Istraživanja. 2013;47(1):10-20.
doi:10.5937/MedIst1301005S .
Smiljanić, Katarina, Resanović, I., Savić, Kristina, Jovanović, A., Zafirović, S., Obradović, Milan, Isenović, E. R., "Role of the epidermal growth factor receptor in thrombin regulated vascular smooth muscle cells proliferation" in Medicinska Istraživanja, 47, no. 1 (2013):10-20,
https://doi.org/10.5937/MedIst1301005S . .

Involvement of the ADAM 12 in Thrombin-Induced Rat's VSMCs Proliferation

Smiljanić, Katarina; Dobutovic, B.; Obradović, Milan; Nikolić, D.; Marche, P.; Isenovic, E. R.

(Bentham Science Publ Ltd, Sharjah, 2011)

TY  - JOUR
AU  - Smiljanić, Katarina
AU  - Dobutovic, B.
AU  - Obradović, Milan
AU  - Nikolić, D.
AU  - Marche, P.
AU  - Isenovic, E. R.
PY  - 2011
UR  - https://cherry.chem.bg.ac.rs/handle/123456789/1195
AB  - Cardiovascular disease is the largest single cause of mortality and its major underlying pathology is atherosclerosis. The proliferation of vascular smooth muscle cells (VSMCs) is a key event in the pathogenesis of the various vascular diseases, including atherosclerosis and hypertension. Thrombin (Thr) is involved in the abnormal proliferation of VSMCs associated with atherosclerosis and hypertension. ADAMs (A Disintegrin And Metalloproteinase) are transmembrane metalloproteinases, belonging to the adamalysins group, that are distinct from matrix metalloproteinases (MMPs) in a way as they have an extracellular disintegrin domain and cytoplasmic domain that can associate with intracellular proteins. There is limited knowledge about the presence of ADAM metalloproteinase activity in Thr-induced VSMCs proliferation. Therefore, this review examines recent findings in signaling mechanisms employed by Thr in modulating the regulation of proliferation of VSMCs with particular emphasis on involvement of ADAM 12 which has been identified as an important mediator of VSMCs hypertrophy and vascular diseases. These findings are critical for understanding the role of Thr in vascular biology and vascular diseases.
PB  - Bentham Science Publ Ltd, Sharjah
T2  - Current Medicinal Chemistry
T1  - Involvement of the ADAM 12 in Thrombin-Induced Rat's VSMCs Proliferation
VL  - 18
IS  - 22
SP  - 3382
EP  - 3386
DO  - 10.2174/092986711796504709
ER  - 
@article{
author = "Smiljanić, Katarina and Dobutovic, B. and Obradović, Milan and Nikolić, D. and Marche, P. and Isenovic, E. R.",
year = "2011",
abstract = "Cardiovascular disease is the largest single cause of mortality and its major underlying pathology is atherosclerosis. The proliferation of vascular smooth muscle cells (VSMCs) is a key event in the pathogenesis of the various vascular diseases, including atherosclerosis and hypertension. Thrombin (Thr) is involved in the abnormal proliferation of VSMCs associated with atherosclerosis and hypertension. ADAMs (A Disintegrin And Metalloproteinase) are transmembrane metalloproteinases, belonging to the adamalysins group, that are distinct from matrix metalloproteinases (MMPs) in a way as they have an extracellular disintegrin domain and cytoplasmic domain that can associate with intracellular proteins. There is limited knowledge about the presence of ADAM metalloproteinase activity in Thr-induced VSMCs proliferation. Therefore, this review examines recent findings in signaling mechanisms employed by Thr in modulating the regulation of proliferation of VSMCs with particular emphasis on involvement of ADAM 12 which has been identified as an important mediator of VSMCs hypertrophy and vascular diseases. These findings are critical for understanding the role of Thr in vascular biology and vascular diseases.",
publisher = "Bentham Science Publ Ltd, Sharjah",
journal = "Current Medicinal Chemistry",
title = "Involvement of the ADAM 12 in Thrombin-Induced Rat's VSMCs Proliferation",
volume = "18",
number = "22",
pages = "3382-3386",
doi = "10.2174/092986711796504709"
}
Smiljanić, K., Dobutovic, B., Obradović, M., Nikolić, D., Marche, P.,& Isenovic, E. R.. (2011). Involvement of the ADAM 12 in Thrombin-Induced Rat's VSMCs Proliferation. in Current Medicinal Chemistry
Bentham Science Publ Ltd, Sharjah., 18(22), 3382-3386.
https://doi.org/10.2174/092986711796504709
Smiljanić K, Dobutovic B, Obradović M, Nikolić D, Marche P, Isenovic ER. Involvement of the ADAM 12 in Thrombin-Induced Rat's VSMCs Proliferation. in Current Medicinal Chemistry. 2011;18(22):3382-3386.
doi:10.2174/092986711796504709 .
Smiljanić, Katarina, Dobutovic, B., Obradović, Milan, Nikolić, D., Marche, P., Isenovic, E. R., "Involvement of the ADAM 12 in Thrombin-Induced Rat's VSMCs Proliferation" in Current Medicinal Chemistry, 18, no. 22 (2011):3382-3386,
https://doi.org/10.2174/092986711796504709 . .
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