Peroxisome Proliferator-activated Receptor-γ Coactivator-1α (PGC-1α) Enhances Engraftment and Angiogenesis of Mesenchymal Stem Cells in Diabetic Hindlimb Ischemia

Overview

Journal Diabetes

Specialty Endocrinology

Date 2012 Jan 24

PMID 22266669

Citations 11

Authors

Debin Lu

Ling Zhang

Haihui Wang

Yan Zhang

Jian Liu

Jing Xu

Ziwen Liang

Wuquan Deng

Youzhao Jiang

Qinan Wu

Shufa Li

Zhihua Ai

Yuxu Zhong

Ying Ying

Hongyan Liu

Feng Gao

Zhonghui Zhang

Bing Chen

Affiliations

Soon will be listed here.

Abstract

To examine whether the peroxisome proliferator-activated receptor-γ coactivator-1α (PGC-1α), a key regulator linking angiogenesis and metabolism, could enhance the engraftment and angiogenesis of mesenchymal stem cells (MSCs) in diabetic hindlimb ischemia, we engineered the overexpression of PGC-1α within MSCs using an adenoviral vector encoding green fluorescent protein and PGC-1α, and then tested the survivability and angiogenesis of MSCs in vitro and in vivo. Under the condition of hypoxia concomitant with serum deprivation, the overexpression of PGC-1α in MSCs resulted in a higher expression level of hypoxia-inducible factor-1α (Hif-1α), a greater ratio of B-cell lymphoma leukemia-2 (Bcl-2)/Bcl-2-associated X protein (Bax), and a lower level of caspase 3 compared with the controls, followed by an increased survival rate and an elevated expression level of several proangiogenic factors. In vivo, the MSCs modified with PGC-1α could significantly increase the blood perfusion and capillary density of ischemic hindlimb of the diabetic rats, which was correlated to an improved survivability of MSCs and an increased level of several proangiogenic factors secreted by MSCs. We identified for the first time that PGC-1α could enhance the engraftment and angiogenesis of MSCs in diabetic hindlimb ischemia.

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