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Nitric oxide regulation of protein trafficking in the cardiovascular system

Nitric oxide regulation of protein trafficking in the cardiovascular system AbstractNitric oxide (NO) is a second messenger with diverse roles in the cardiovascular system, such as inhibiting thrombosis and limiting vascular inflammation. One mechanism by which NO modulates such disparate physiological processes is by regulating protein trafficking within cells. NO inhibits exocytosis of endothelial granules which would otherwise trigger inflammation. NO also blocks platelet secretion of granules that would otherwise activate thrombosis. NO decreases granule trafficking from the Golgi to the plasma membrane by targeting a key component of the exocytic machinery, N-ethylmaleimide sensitive factor (NSF). In contrast to its inhibitory effects on exocytosis, NO accelerates endocytosis. S-nitrosylation of dynamin increases its ability to hydrolyze GTP, assemble in oligomers around a nascent vesicle, and cleave the endocytic vesicle free from the plasma membrane. NO regulation of vesicle trafficking is a molecular mechanism that explains some of the cardiovascular effects of NO, and may be of broad physiological significance. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Cardiovascular Research Oxford University Press

Nitric oxide regulation of protein trafficking in the cardiovascular system

Cardiovascular Research , Volume 75 (2) – Jul 15, 2007

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References (66)

Publisher
Oxford University Press
Copyright
Copyright © 2007, European Society of Cardiology
ISSN
0008-6363
eISSN
1755-3245
DOI
10.1016/j.cardiores.2007.03.024
pmid
17490627
Publisher site
See Article on Publisher Site

Abstract

AbstractNitric oxide (NO) is a second messenger with diverse roles in the cardiovascular system, such as inhibiting thrombosis and limiting vascular inflammation. One mechanism by which NO modulates such disparate physiological processes is by regulating protein trafficking within cells. NO inhibits exocytosis of endothelial granules which would otherwise trigger inflammation. NO also blocks platelet secretion of granules that would otherwise activate thrombosis. NO decreases granule trafficking from the Golgi to the plasma membrane by targeting a key component of the exocytic machinery, N-ethylmaleimide sensitive factor (NSF). In contrast to its inhibitory effects on exocytosis, NO accelerates endocytosis. S-nitrosylation of dynamin increases its ability to hydrolyze GTP, assemble in oligomers around a nascent vesicle, and cleave the endocytic vesicle free from the plasma membrane. NO regulation of vesicle trafficking is a molecular mechanism that explains some of the cardiovascular effects of NO, and may be of broad physiological significance.

Journal

Cardiovascular ResearchOxford University Press

Published: Jul 15, 2007

Keywords: Keywords Exocytosis Inflammation Endothelial Platelet Thrombosis Vesicle Trafficking N -ethylmaleimide sensitive factor SNARE

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