MAVS-dependent host species range and pathogenicity of human hepatitis A virus.

MAVS-dependent host species range and pathogenicity of human hepatitis A virus.
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DOI:
10.1126/science.aaf8325
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发表时间:
2016-09-30
期刊:
Science (New York, N.Y.)
影响因子:
--
通讯作者:
Lemon SM
Lemon SM
中科院分区:
其他
文献类型:
--
作者:
Hirai-Yuki A;Hensley L;McGivern DR;González-López O;Das A;Feng H;Sun L;Wilson JE;Hu F;Feng Z;Lovell W;Misumi I;Ting JP;Montgomery S;Cullen J;Whitmire JK;Lemon SM

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Although hepatotropic viruses are important causes of human disease, the intrahepatic immune response to hepatitis viruses is poorly understood due to a lack of tractable small animal models. Here we describe a murine model of hepatitis A virus (HAV) infection that recapitulates critical features of type A hepatitis in humans. We demonstrate that the capacity of HAV to evade MAVS-mediated type I interferon responses defines its host species range. HAV-induced liver injury was associated with interferon-independent intrinsic hepatocellular apoptosis and hepatic inflammation that unexpectedly results from MAVS and IRF3/7 signaling. This murine model thus reveals a previously undefined link between innate immune responses to virus infection and acute liver injury, providing a new paradigm for viral pathogenesis in the liver.
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