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Role of PI3K/AKT, cPLA2 and ERK1/2 Signaling Pathways in Insulin Regulation of Vascular Smooth Muscle Cells Proliferation

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Authors
Isenović, Esma R.
Kedees, Mamdouh H.
Tepavčević, Snežana
Milosavljević, Tijana
Korićanac, Goran
Trpković, Andreja
Marche, Pierre
Article (Published version)
,
© 2009 Bentham Science Publishers Ltd
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Abstract
Vascular smooth muscle cells (VSMCs) respond to arterial wall injury by intimal proliferation and play a key role in atherogenesis by proliferating and migrating excessively in response to repeated injury, such as hypertension and atherosclerosis. In contrast, fully differentiated, quiescent VSMCs allow arterial vasodilatation and vasoconstriction. Exaggerated and uncontrolled VSMCs proliferation appears therefore to be a common feature of both atherosclerosis and hypertension. Phosphorylation/dephosphorylation reactions of enzymes belonging to the family of mitogen-activated protein kinases (MAPKs), phosphatidylinositol 3-kinase (PI3K) and protein kinase B (Akt) play an important role in the transduction of mitogenic signal. We have previously shown that among extracellular signal-regulated protein kinases (ERKs), the 42 and 44 kDa isoforms (ERK1/2) as well as Akt and cytosolic phospholipase 2 (cPLA 2) participate in the cellular mitogenic machinery triggered by several VSMCs activato...rs, including insulin (INS). The ability of INS to significantly increase VSMCs proliferation has been demonstrated in several systems, but understanding of the intracellular signal transduction pathways involved is incomplete. Signal transduction pathways involved in regulation of the VSMCs proliferation by INS remains poorly understood. Thus, this review examines recent findings in signaling mechanisms employed by INS in modulating the regulation of proliferation of VSMCs with particular emphasis on PI3K/Akt, cPLA2 and ERK1/2 signaling pathways that have been identified as important mediators of VSMCs hypertrophy and vascular diseases. These findings are critical for understanding the role of INS in vascular biology and hyperinsulinemia.

Keywords:
cPLA2 / ERK1/2 / insulin / PI3K/Akt / proliferation / VSMCs
Source:
Cardiovascular & Hematological Disorders-Drug Targets, 2009, 9, 3, 172-180

DOI: 10.2174/187152909789007034

ISSN: 1871-529X

PubMed: 19534657

Scopus: 2-s2.0-73249149543
[ Google Scholar ]
34
URI
http://www.eurekaselect.com/openurl/content.php?genre=article&issn=1871-529X&volume=9&issue=3&spage=172
http://vinar.vin.bg.ac.rs/handle/123456789/7802
Collections
  • Radovi istraživača
Institution
Vinča
TY  - JOUR
AU  - Isenović, Esma R.
AU  - Kedees, Mamdouh H.
AU  - Tepavčević, Snežana
AU  - Milosavljević, Tijana
AU  - Korićanac, Goran
AU  - Trpković, Andreja
AU  - Marche, Pierre
PY  - 2009
UR  - http://www.eurekaselect.com/openurl/content.php?genre=article&issn=1871-529X&volume=9&issue=3&spage=172
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/7802
AB  - Vascular smooth muscle cells (VSMCs) respond to arterial wall injury by intimal proliferation and play a key role in atherogenesis by proliferating and migrating excessively in response to repeated injury, such as hypertension and atherosclerosis. In contrast, fully differentiated, quiescent VSMCs allow arterial vasodilatation and vasoconstriction. Exaggerated and uncontrolled VSMCs proliferation appears therefore to be a common feature of both atherosclerosis and hypertension. Phosphorylation/dephosphorylation reactions of enzymes belonging to the family of mitogen-activated protein kinases (MAPKs), phosphatidylinositol 3-kinase (PI3K) and protein kinase B (Akt) play an important role in the transduction of mitogenic signal. We have previously shown that among extracellular signal-regulated protein kinases (ERKs), the 42 and 44 kDa isoforms (ERK1/2) as well as Akt and cytosolic phospholipase 2 (cPLA 2) participate in the cellular mitogenic machinery triggered by several VSMCs activators, including insulin (INS). The ability of INS to significantly increase VSMCs proliferation has been demonstrated in several systems, but understanding of the intracellular signal transduction pathways involved is incomplete. Signal transduction pathways involved in regulation of the VSMCs proliferation by INS remains poorly understood. Thus, this review examines recent findings in signaling mechanisms employed by INS in modulating the regulation of proliferation of VSMCs with particular emphasis on PI3K/Akt, cPLA2 and ERK1/2 signaling pathways that have been identified as important mediators of VSMCs hypertrophy and vascular diseases. These findings are critical for understanding the role of INS in vascular biology and hyperinsulinemia.
T2  - Cardiovascular & Hematological Disorders-Drug Targets
T1  - Role of PI3K/AKT, cPLA2 and ERK1/2 Signaling Pathways in Insulin Regulation of Vascular Smooth Muscle Cells Proliferation
VL  - 9
IS  - 3
SP  - 172
EP  - 180
DO  - 10.2174/187152909789007034
ER  - 
@article{
author = "Isenović, Esma R. and Kedees, Mamdouh H. and Tepavčević, Snežana and Milosavljević, Tijana and Korićanac, Goran and Trpković, Andreja and Marche, Pierre",
year = "2009",
url = "http://www.eurekaselect.com/openurl/content.php?genre=article&issn=1871-529X&volume=9&issue=3&spage=172, http://vinar.vin.bg.ac.rs/handle/123456789/7802",
abstract = "Vascular smooth muscle cells (VSMCs) respond to arterial wall injury by intimal proliferation and play a key role in atherogenesis by proliferating and migrating excessively in response to repeated injury, such as hypertension and atherosclerosis. In contrast, fully differentiated, quiescent VSMCs allow arterial vasodilatation and vasoconstriction. Exaggerated and uncontrolled VSMCs proliferation appears therefore to be a common feature of both atherosclerosis and hypertension. Phosphorylation/dephosphorylation reactions of enzymes belonging to the family of mitogen-activated protein kinases (MAPKs), phosphatidylinositol 3-kinase (PI3K) and protein kinase B (Akt) play an important role in the transduction of mitogenic signal. We have previously shown that among extracellular signal-regulated protein kinases (ERKs), the 42 and 44 kDa isoforms (ERK1/2) as well as Akt and cytosolic phospholipase 2 (cPLA 2) participate in the cellular mitogenic machinery triggered by several VSMCs activators, including insulin (INS). The ability of INS to significantly increase VSMCs proliferation has been demonstrated in several systems, but understanding of the intracellular signal transduction pathways involved is incomplete. Signal transduction pathways involved in regulation of the VSMCs proliferation by INS remains poorly understood. Thus, this review examines recent findings in signaling mechanisms employed by INS in modulating the regulation of proliferation of VSMCs with particular emphasis on PI3K/Akt, cPLA2 and ERK1/2 signaling pathways that have been identified as important mediators of VSMCs hypertrophy and vascular diseases. These findings are critical for understanding the role of INS in vascular biology and hyperinsulinemia.",
journal = "Cardiovascular & Hematological Disorders-Drug Targets",
title = "Role of PI3K/AKT, cPLA2 and ERK1/2 Signaling Pathways in Insulin Regulation of Vascular Smooth Muscle Cells Proliferation",
volume = "9",
number = "3",
pages = "172-180",
doi = "10.2174/187152909789007034"
}
Isenović ER, Kedees MH, Tepavčević S, Milosavljević T, Korićanac G, Trpković A, Marche P. Role of PI3K/AKT, cPLA2 and ERK1/2 Signaling Pathways in Insulin Regulation of Vascular Smooth Muscle Cells Proliferation. Cardiovascular & Hematological Disorders-Drug Targets. 2009;9(3):172-180
Isenović, E. R., Kedees, M. H., Tepavčević, S., Milosavljević, T., Korićanac, G., Trpković, A.,& Marche, P. (2009). Role of PI3K/AKT, cPLA2 and ERK1/2 Signaling Pathways in Insulin Regulation of Vascular Smooth Muscle Cells Proliferation.
Cardiovascular & Hematological Disorders-Drug Targets, 9(3), 172-180.
https://doi.org/10.2174/187152909789007034
Isenović Esma R., Kedees Mamdouh H., Tepavčević Snežana, Milosavljević Tijana, Korićanac Goran, Trpković Andreja, Marche Pierre, "Role of PI3K/AKT, cPLA2 and ERK1/2 Signaling Pathways in Insulin Regulation of Vascular Smooth Muscle Cells Proliferation" 9, no. 3 (2009):172-180,
https://doi.org/10.2174/187152909789007034 .

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