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Soluble Jagged-1 inhibits neointima formation by attenuating Notch-Herp2 signaling.

Authors: Caolo, V  Schulten, HM  Zhuang, ZW  Murakami, M  Wagenaar, A  Verbruggen, S  Molin, DG  Post, MJ 
Citation: Caolo V, etal., Arterioscler Thromb Vasc Biol. 2011 May;31(5):1059-65. Epub 2011 Feb 17.
Pubmed: (View Article at PubMed) PMID:21330605
DOI: Full-text: DOI:10.1161/ATVBAHA.110.217935

OBJECTIVE: Notch has been implicated in neointima formation as reflected by increased Notch/Jagged expression on vascular injury and the promigratory effect of Notch signaling on smooth muscle cells. Soluble Jagged-1 (sJag1) has been shown to inhibit Notch signaling in vitro; however, its capacity to suppress neointima formation remains unknown. METHODS AND RESULTS: Balloon injury of rat carotid arteries induced Notch1, Notch3, and Jagged-1 expression at days 3 and 14 postinjury. Notch signaling was activated as shown by increased expression of the Notch target gene Herp2. Adenoviral sJag1 (Ad-sJag1) transfection reduced neointima formation in carotid artery and enhanced reendothelialization, whereas adenoviral full-length Jagged-1 (Ad-Fl-Jag1) or LacZ had no effect. Injury-induced Herp2 expression was absent in vessels treated with Ad-sJag1. Consistently, Herp2 expression was reduced in Ad-sJag1-infected or recombinant sJag1 -treated coronary artery smooth muscle cells (CASMCs). Ad-sJag1 had no effect on human umbilical endothelial cell behavior, but it significantly reduced proliferation and migration of CASMCs. Overexpression of Herp2 in sJag1-treated CASMCs rescued the migratory and proliferative capacity in vitro. CONCLUSIONS: Our results demonstrate that sJag1 can inhibit neointima formation after balloon injury by decreasing smooth muscle cell proliferation and migration through interference with Notch-Herp2 signaling.

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CRRD Object Information
CRRD ID: 6482230
Created: 2012-04-19
Species: All species
Last Modified: 2012-04-19
Status: ACTIVE



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RGD is funded by grant HL64541 from the National Heart, Lung, and Blood Institute on behalf of the NIH.