Danger signal limits Hepatitis C infection

Despite the fact that hepatitis C virus (HCV) persists chronically in about 80 percent of those infected, some liver cells remain free of the virus even after many years. Now Sung Key Jang of Pohang University of Science and Technology, South Korea, et al. explain that paradox. During chronic HCV infection, a cellular protein, HMGB1, helps restrain viral reproduction. That prevents HCV from sweeping the liver, and results in a lower blood burden of virus than in the case of hepatitis B. This first description of HMGB1-related responses triggered by HCV infection is published in the September 2011 issue of the Journal of Virology.

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