GDF11 Improves Angiogenic Function of EPCs in Diabetic Limb Ischemia

Diabetes
JiaJia ZhangGuangda Xiang

Abstract

Growth differentiation factor 11 (GDF11) has been shown to promote stem cell activity and rejuvenate the function of multiple organs in old mice, but little is known about the functions of GDF11 in the diabetic rat model of hindlimb ischemia. In this study, we found that systematic replenishment of GDF11 rescues angiogenic function of endothelial progenitor cells (EPCs) and subsequently improves vascularization and increases blood flow in diabetic rats with hindlimb ischemia. Conversely, anti-GDF11 monoclonal antibody treatment caused impairment of vascularization and thus, decreased blood flow. In vitro treatment of EPCs with recombinant GDF11 attenuated EPC dysfunction and apoptosis. Mechanistically, the GDF11-mediated positive effects could be attributed to the activation of the transforming growth factor-β/Smad2/3 and protein kinase B/hypoxia-inducible factor 1α pathways. These findings suggest that GDF11 repletion may enhance EPC resistance to diabetes-induced damage, improve angiogenesis, and thus, increase blood flow. This benefit of GDF11 may lead to a new therapeutic approach for diabetic hindlimb ischemia.

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Citations

Jul 12, 2019·Laboratory Investigation; a Journal of Technical Methods and Pathology·Lan ZhaoQunlin Gong
May 22, 2020·Arteriosclerosis, Thrombosis, and Vascular Biology·John P Cooke, Shu Meng
Jun 27, 2020·Journal of Cellular and Molecular Medicine·Chi ZhangHong Yu
Oct 21, 2020·Experimental & Molecular Medicine·Joonho Suh, Yun-Sil Lee
Jul 15, 2021·Annals of Medicine·Yan YangShiying Shao
Aug 14, 2021·Stem Cell Research & Therapy·Chi ZhangHong Yu

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