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HGF expression induced by HIF-1α promote the proliferation and tube formation of endothelial progenitor cells.

Abstract：

:Hypoxia-inducible factor-1α (HIF-1α) and hepatocyte growth factor (HGF) play important roles in postnatal neovascularization. However, the interaction of these two pathways is not fully understood. The present study utilized CoCl(2) treated-endothelial progenitor cells (EPCs) (EPCs exposure to CoCl(2) are under mimic hypoxia) to examine the expressions of HIF-1α and HGF and futher to assess whether or not the inhibitor (2-methoxyestradiol [2ME2]) of HIF-1α decrease the HGF expression. In addition, to investigate the effects of HGF on the proliferation and tube formation of EPCs under mimic hypoxia, EPCs were transfected with NK4 (HGF antagonist) plasmid and exposed to CoCl(2), then the proliferation of these EPCs was assayed by MTS and the tube formation capacity of these EPCs on Matrigel was detected. The analysis indicated that CoCl(2) treatment induced HIF-1α expression of EPCs, and futher promoted HGF expression. While after 2ME2 was used in CoCl(2) treated-EPCs, HGF expression was markedly inhibited compared with non-pretreated EPCs with 2ME2, which also showed that HGF expression in EPCs was mediated by HIF-1α. Further, the results showed that after EPCs were transfected with NK4 in spite of being exposed to CoCl(2), their proliferation activity and tube formation capacity were weakened, which in turn indicated that HGF could promote the proliferation and the tube formation of EPCs, and this process might be regulated by HIF-1α.

journal_name

Cell Biol Int

journal_title

Cell biology international

authors

Yu F,Lin Y,Zhan T,Chen L,Guo S

doi

10.1002/cbin.10397

subject

Has Abstract

pub_date

2015-03-01 00:00:00

pages

310-7

issue

3

eissn

1065-6995

issn

1095-8355

journal_volume

39

pub_type

杂志文章

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