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Leukemia inhibitory factor attenuates renal fibrosis through Stat3-miR-29c

Authors :
Lan-Jun Fu
Y. Eugene Chin
Ying Yu
Chen Yu
Yumei Wang
Yangyang Niu
Source :
American Journal of Physiology-Renal Physiology. 309:F595-F603
Publication Year :
2015
Publisher :
American Physiological Society, 2015.

Abstract

Leukemia inhibitory factory (LIF), as a member of the IL-6 family, has been reported to ameliorate myocardial fibrosis and myocardial cell death. The purpose of the present study was to investigate the effect of LIF on renal fibrosis and its underlying mechanism. Our results showed, first, that LIF inhibited collagen type 1 and collagen type 3 expression induced by ANG II in NRK-49F (rat kidney fibroblast) cells and in mice with unilateral ureteral obstruction. Second, LIF induced Stat3 Tyr705phosphorylation and inhibited Stat3 Tyr705and Ser727phosphorylation induced by ANG II in NRK-49F cells. Third, LIF exerted an antirenal fibrosis effect mainly through activation of Stat3 Tyr705phosphorylation in NRK-49F cells. These effects of LIF were not observed in Stat3−/−cells. Finally, LIF-Stat3 upregulated microRNA-29c expression, and the latter downregulated collagen type 1 and collagen type 3 expression in NRK-49F cells and in mice with unilateral ureteral obstruction. In conclusion, LIF played a role in antirenal fibrosis by competitively activating Stat3 Tyr705phosphorylation, which upregulated microRNA-29c to suppress collagen expression.

Details

ISSN :
15221466 and 1931857X
Volume :
309
Database :
OpenAIRE
Journal :
American Journal of Physiology-Renal Physiology
Accession number :
edsair.doi.dedup.....2bf59f5ac2d34231a47e48a1007a0774
Full Text :
https://doi.org/10.1152/ajprenal.00634.2014