Abstract
Mesenchymal stem cells (MSCs) are pluripotent stem cells with self-renewal and multidirectional differentiation capabilities. Dimethyloxalyl glycine (DMOG) mobilizes MSCs, and the hypoxia inducible factor-1 (HIF-1) signaling pathway plays an important role in MSC mobilization. We aimed to investigate the effect of DMOG on the HIF-1 pathway in MSCs. Rats were treated with DMOG, and the numbers of peripheral blood MSCs (PB-MSCs) and bone marrow MSCs (BM-MSCs) were detected by the Colony-forming unit fibroblastic (CFU-F) method. The growth curve, cell cycle and migration ability of PB-MSCs and BM-MSCs were detected by CCK-8, Flow cytometry and Transwell assays. Western blotting and real-time qPCR were used to detect the expression of the HIF-1 pathway. The number of bone marrow microvessels was detected by immunohistochemistry. DMOG significantly increased the numbers of PB-MSCs and BM-MSCs (P < 0.05). Further, the MSCs in peripheral blood and bone marrow still had the ability to proliferate and migrate after mobilization by DMOG. The expression levels of HIF-1α, stromal cell-derived factor-1α (SDF-1α) and vascular endothelial growth factor (VEGF) in MSCs were significantly regulated by DMOG (P < 0.05). The number of bone marrow microvessels decreased after the VEGF/VEGFR signaling pathway was blocked by SU5416 (P < 0.05). Therefore, these findings demonstrated that DMOG regulates the HIF-1α signaling pathway and promotes biological effects in MSCs.
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This work was financially supported by the National Natural Science Foundation of China (Grant No. 31570994) and Natural Science Foundation of Zhejiang Province, China (Grant No. LY15C100001).
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Zhou, B., Ge, T., Zhou, L. et al. Dimethyloxalyl Glycine Regulates the HIF-1 Signaling Pathway in Mesenchymal Stem Cells. Stem Cell Rev and Rep 16, 702–710 (2020). https://doi.org/10.1007/s12015-019-09947-7
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DOI: https://doi.org/10.1007/s12015-019-09947-7