Journal
COLD SPRING HARBOR PERSPECTIVES IN MEDICINE
Volume 9, Issue 1, Pages -Publisher
COLD SPRING HARBOR LAB PRESS, PUBLICATIONS DEPT
DOI: 10.1101/cshperspect.a031674
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Funding
- National Institutes of Health (NIH) [R01-AI103083, U19-AI109965, R21-AI 117575, R01-A131685]
- National Cancer Institute (NCI) Center Core Support Grant [P30-CA016086]
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Mechanistic analyses of hepatitis A virus (HAV)-induced pathogenesis have long been thwarted by the lack of tractable small animal models that recapitulate disease observed in humans. Several approaches have shown success, including infection of chimeric mice with human liver cells. Other recent studies show that HAV can replicate to high titer in mice lacking expression of the type I interferon (IFN) receptor (IFN-alpha/beta receptor) or mitochondria! antiviral signaling (MAVS) protein. Mice deficient in the IFN receptor show critical features of type A hepatitis in humans when challenged with human HAV, including histological evidence of liver damage, leukocyte infiltration, and the release of liver enzymes into blood. Acute pathogenesis is caused by MAVS-dependent signaling that leads to intrinsic apoptosis of hepatocytes.
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