IMR Press / FBL / Volume 19 / Issue 7 / DOI: 10.2741/4272

Frontiers in Bioscience-Landmark (FBL) is published by IMR Press from Volume 26 Issue 5 (2021). Previous articles were published by another publisher on a subscription basis, and they are hosted by IMR Press on as a courtesy and upon agreement with Frontiers in Bioscience.


CREG1 promotes angiogenesis and neovascularization

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1 Cardiovascular Research Institute and Key Laboratory of Cardiology, Shenyang Northern Hospital, Shenyang, LIAONING 110840, China
2 Department of Surgery, Robert Wood Johnson Medical School, New Brunswick, NJ 08903, USA
3 Center for Metabolic Disease Research, Temple University School of Medicine, Philadelphia, PA 19140, USA
Front. Biosci. (Landmark Ed) 2014, 19(7), 1151–1161;
Published: 1 June 2014
(This article belongs to the Special Issue CREG promotes vasculogenesis by activation of VEGFPI3KAkt pathway)

Angiogenesis has long been considered as an important strategy for ischemic injury. It has been reported that cellular repressor of E1A-stimulated genes (CREG1) promotes human umbilical vein endothelial cell (HUVEC) proliferation, migration, and protects endothelial cell (EC) from apoptosis. However, its potential effect on angiogenesis remains undefined. In the present study, we investigated the role and mechanisms of CREG1 in promoting angiogenesis. We found that adenovirus-transduced CREG1 expression in HUVECs increases EC tube formation in matrigel and promotes neovascularization in matrigel plugs grafted into wild type mice. In addition, adenoviral CREG1 expression enhances filopodia formation, which is accompanied by increased expression of integrin-linked kinase (ILK) and activation of its downstream effector Cdc42. Hindlimb perfusion was significantly reduced after femoral artery ligation in CREG1 heterozygous knockout mice. Finally, adenoviral CREG1 was injected intramuscularly in gastrochemius and partially restores ischemic hindlimb perfusion. Our results demonstrated that CREG1 increases EC filopodia formation and vascular assembly via ILK-Cdc42 activation and promotes neovascularization, which might be a therapeutic target for ischemic injury. 

Cellular repressor of E1A-stimulated gene
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