作者
Samantha M Yeligar, Keigo Machida, Hidekazu Tsukamoto, Vijay K Kalra
发表日期
2009/11/1
期刊
The Journal of Immunology
卷号
183
期号
9
页码范围
5964-5976
出版商
American Association of Immunologists
简介
Chronic alcohol consumption leads to liver inflammation and cirrhosis. Alcoholic liver disease patients have increased levels of hepatic RANTES/CCL5. However, less is known about the molecular mechanisms for ethanol-induced RANTES up-regulation. In this study, we observed that liver sinusoidal endothelial cells derived from ethanol-fed rats (E-rLSECs) showed severalfold increases in RANTES and hypoxia-inducible factor 1α (HIF-1α) mRNAs compared with control rLSECs (C-rLSECs). Similar effects were seen in acute ethanol treatment of isolated rLSECs and human dermal microvascular endothelial cells. Ethanol-induced RANTES mRNA expression required ethanol metabolism, p38 MAPK, HIF-1α, and JNK-2, but not JNK-1. EMSA experiments showed increased HIF-1α binding to wild-type hypoxia response elements (HREs;− 31 to− 9 bp) within the RANTES promoter in response to ethanol. RANTES …
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