Hepatitis C virus infection is blocked by HMGB1 released from virus-infected cells.

Autor: Jung JH; PBC, Department of Life Science, Pohang University of Science and Technology, San 31, Hyoja-Dong, Pohang 790-784, Republic of Korea., Park JH, Jee MH, Keum SJ, Cho MS, Yoon SK, Jang SK
Jazyk: angličtina
Zdroj: Journal of virology [J Virol] 2011 Sep; Vol. 85 (18), pp. 9359-68. Date of Electronic Publication: 2011 Jul 13.
DOI: 10.1128/JVI.00682-11
Abstrakt: High-mobility group box 1 (HMGB1), an abundant nuclear protein that triggers host immune responses, is an endogenous danger signal involved in the pathogenesis of various infectious agents. However, its role in hepatitis C virus (HCV) infection is not known. Here, we show that HMGB1 protein is translocated from the nucleus to cytoplasm and subsequently is released into the extracellular milieu by HCV infection. Secreted HMGB1 triggers antiviral responses and blocks HCV infection, a mechanism that may limit HCV propagation in HCV patients. Secreted HMGB1 also may have a role in liver cirrhosis, which is a common comorbidity in HCV patients. Further investigations into the roles of HMGB1 in the diseases caused by HCV infection will shed light on and potentially help prevent these serious and prevalent HCV-related diseases.
Databáze: MEDLINE