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Smad3 AND Naringenin

Xiao-ming Meng, Yun Zhang, Xiao-Ru Huang, Gui-ling Ren, Jun Li, Hui Yao Lan
We recently showed that imbalance of TGF-β/Smad signaling with over-activation of Smad3 but lower levels of Smad7 is a central mechanism of tissue fibrosis. In the present study, we report here that inhibition of Smad3 with naringenin (NG) and upregulation of Smad7 with asiatic acid (AA) produced an additive effect on inhibition of renal fibrosis in a mouse model of obstructive nephropathy. We found that AA, a triterpene from Centella Asiatica, functioned as a Smad7 agonist and suppressed TGF-β/Smad3-mediated renal fibrosis by inducing Smad7...
November 10, 2015: Oncotarget
Changjie Lou, Fayun Zhang, Ming Yang, Juan Zhao, Wenfeng Zeng, Xiaocui Fang, Yanqiao Zhang, Chunling Zhang, Wei Liang
Epithelial to mesenchymal transition (EMT) promotes cellular motility, invasiveness and metastasis during embryonic development and tumorigenesis. Transforming growth factor-β (TGF-β) signaling pathway is a key regulator of EMT. A lot of evidences suggest that this process is Smad3-dependent. Herein we showed that exposure of aspc-1 and panc-1 pancreatic cancer cells to TGF-β1 resulted in characteristic morphological alterations of EMT, and enhancement of cell motility and gemcitabine (Gem) resistance along with an up-regulation of EMT markers genes such as vimentin, N-cadherin, MMP2 and MMP9...
2012: PloS One
Xingjun Liu, Wei Wang, Han Hu, Ning Tang, Chunling Zhang, Wei Liang, Minwei Wang
PURPOSE: During the process of liver fibrogenesis, transforming growth factor-beta (TGF-beta) plays an essential role in modulating extracellular matrix (ECM) gene expression, and a growing body of evidence suggests that this is a Smad3-dependent process in the activated hepatic stellate cells (HSCs). Naringenin showed a significantly protective effect on experimental rat liver fibrosis, in our efforts to elucidate its antifibrosis molecular mechanisms and to find a novel target based on Smad3 signaling for challenging fibrosis diseases...
January 2006: Pharmaceutical Research
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