Abstract
Interleukin 10 (IL-10) is a pleiotropic cytokine acting on a variety of immune cells through the cell surface receptor (IL-10R). It has been suggested to resuscitate antiviral immunity by interfering with IL-10/IL-10R pathway. The woodchuck model infected by woodchuck hepatitis virus (WHV) represents an informative animal model to study hepatitis B virus (HBV) infection. In this study, the woodchuck IL-10R (wIL-10R) was molecularly cloned and characterized, showing high similarity of its nucleotide and amino acid sequences to that of other mammalian species. The expression level of wIL-10R mRNA in woodchuck peripheral blood mononuclear cells was significantly increased in acute WHV infection but down-regulated during chronic WHV infection. Specific rabbit antibodies against wIL-10R were prepared and showed the ability to enhance the proliferation and degranulation of specific T-cells from chronically WHV-infected woodchucks in vitro. The present work on wIL-10R provided a good basis for future preclinical studies on therapeutic approaches for chronic HBV infection.
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