期刊
SCIENTIFIC REPORTS
卷 6, 期 -, 页码 -出版社
NATURE PUBLISHING GROUP
DOI: 10.1038/srep23968
关键词
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资金
- National Science Foundation of China [81570611/H0503]
- National Basic Research Program of China [2012CB517601]
- Science Foundation of Jiangsu Province [BK20140048]
Quercetin, a flavonoid found in a wide variety of plants and presented in human diet, displays promising potential in preventing kidney fibroblast activation. However, whether quercetin can ameliorate kidney fibrosis in mice with obstructive nephropathy and the underlying mechanisms remain to be further elucidated. In this study, we found that administration of quercetin could largely ameliorate kidney interstitial fibrosis and macrophage accumulation in the kidneys with obstructive nephropathy. MTORC1, mTORC2, beta-catenin as well as Smad signaling were activated in the obstructive kidneys, whereas quercetin could markedly reduce their abundance except Smad3 phosphorylation. In cultured NRK-49F cells, quercetin could inhibit alpha-SMA and fibronectin (FN) expression induced by TGF beta 1 treatment. MTORC1, mTORC2, beta-catenin and Smad signaling pathways were stimulated by TGF beta 1 at a time dependent manner. Similar to those findings in the obstructive kidneys, mTORC1, mTORC2 and beta-catenin, but not Smad signaling pathways were remarkably blocked by quercetin treatment. Together, these results suggest that quercetin inhibits fibroblast activation and kidney fibrosis involving a combined inhibition of mTOR and beta-catenin signaling transduction, which may act as a therapeutic candidate for patients with chronic kidney diseases.
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