1. Lignans from Schisandra chinensis ameliorate alcohol and CCl4-induced long-term liver injury and reduce hepatocellular degeneration via blocking ETBR.
- Author
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Xu, Jin-Biao, Gao, Guang-Chun, Yuan, Ming-Jing, Huang, Xuan, Zhou, Hong-Yu, Zhang, Yang, Zheng, Ya-Xin, Wu, Zhe, Feng, Jun-Miao, and Wu, Ji-Ming
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LIVER disease prevention , *ALCOHOLS (Chemical class) , *ANIMAL experimentation , *APOPTOSIS , *CARRIER proteins , *CELL lines , *CELL receptors , *GENE expression , *GLUTATHIONE , *HEPATOTOXICOLOGY , *HISTOLOGICAL techniques , *HYDROCARBONS , *LIGNANS , *LIVER , *LIVER diseases , *MEDICINAL plants , *CHINESE medicine , *MICE , *MUSCLE proteins , *PHOSPHOLIPASES , *TRANSFORMING growth factors-beta , *OXIDATIVE stress , *MICROARRAY technology , *CASPASES - Abstract
Chemical hepatotoxicity, especially alcoholic liver injury (ALI), commonly occurs in young and middle-aged people who drink heavily. ALI is extremely harmful and can induce severe disease states, such as hepatitis, liver fibrosis, cirrhosis, or liver cancer, which are similar to CCl 4 -induced liver disease states in animals. In recent studies, the pathological changes of hepatocytes and the hepatic stellate cell have shown a significant connection between endoplasmic reticulum (ER) stress and the development of liver pathology in patients. However, the detailed pathological mechanism needs to be further studied. Schisandra chinensis , (S. chinensis) , a fruit-bearing vine used in Traditional Chinese Medicine (TCM), has been used to treat chronic or acute diseases, including liver disease. S. chinensis -derived lignans (SCDLs) in particular have been shown to alleviate liver pathological changes. This study sought to elucidate the mechanisms underlying SCDL-mediated hepatoprotection. We first used in silico target prediction and computational simulation methods to identify putative lignan-binding targets relative to the hepatoprotective effect. A gene microarray analysis was performed to identify differently expressed genes that might have significance in the disease pathological process. We then used histological analyses in a mice hepatotoxicity model to test the effectiveness of SCDLs in vivo , and a hepatocellular toxicity model to analyze the candidate-compound-mediated hepatoprotection and expression states of the key targets in vitro. The in silico analysis results indicated that endothelin receptor B (ETBR/EDNRB) is likely a significant node during the liver pathological change process and a promising key target for the SCDL compound schisantherin D on the hepatoprotective effect; experimental studies showed that schisantherin D alleviated the EtOH- and ET-1-induced HL-7702 cell (belongs to liver parenchymal cell lines) injury ratio, decreased the expression of ETBR, and inhibited ECMs and ET-1 secretion in LX-2 cells (one form of hepatic stellate cells). SCDLs ameliorated EtOH- and CCl 4 -induced fibrosis formation in mice liver tissue. Liver tissue western blots of SCDL-treated mice showed downregulated α-SMA, ETBR, PLCβ, CHOP, Bax, and the apoptotic factors of cleaved-caspase 12, cleaved-caspase 9, and cleaved-caspase 3 hinted at an anti-apoptosis and hepatoprotective effect. The SCDL treatment also elevated serum glutathione (GSH) and reduced the serum-transforming growth factor-β1 (TGF-β1) level. The findings indicated that SCDLs prevent hepatotoxicity via their anti-fibrotic, anti-oxidant, and anti-apoptosis properties. ETBR may be the key factor in promoting chemical hepatotoxicity. Image 1 • ETBR was confirmed to be a promising alcoholic liver injury treating target. • In silico analysis and experimental validation was used to illustrate SCDLs mediated hepatotoxicity protection. • Schisantherin D showed potential hepatotoxicity protective effect via blocking ETBR. [ABSTRACT FROM AUTHOR]
- Published
- 2020
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