The interferon-α gene family of Marmota himalayana, a Chinese marmot species with susceptibility to woodchuck hepatitis virus infection
2008
Abstract The interferon- α (IFN- α ) gene family is an important part of the immune system. Recombinant interferon- α is widely used to treat viral hepatitis and malignant diseases. Marmota himalayana has been found to be susceptible to woodchuck hepatitis virus, a virus genetically related to hepatitis B virus (HBV), and is suitable as an animal model for studies on HBV infection. Here, the IFN- α gene family of M. himalayana (cwIFN- α ) was characterized. Sequence data indicate that the cwIFN- α family consists of at least 8 functional sequences and 6 pseudogenes with high homology within the family and to IFN- α of Marmota monax , a related species and well-established animal model. The recombinant cwIFN- α subtypes were expressed and tested to be active in viral protection assay and to induce expression of MxA in a species-specific manner. This work provides essential information for future work on testing new therapeutic approaches of HBV infection based on IFN- α in M. himalayana .
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