Inhibition of CD1d1-mediated antigen presentation by the vaccinia virus B1R and H5R molecules |
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Authors: | Webb Tonya J Roberts Litavecz Roberta A Khan Masood A Du Wenjun Gervay-Hague Jacquelyn Renukaradhya Gourapura J Brutkiewicz Randy R |
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Affiliation: | Department of Microbiology and Immunology, Indiana University School of Medicine, Indianapolis, IN 46202-5181, USA. |
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Abstract: | Vaccinia virus (VV) has been most commonly used as the vaccine to protect individuals against the causative agent of smallpox (variola virus), but it also uses a number of strategies meant to evade or blunt the host's antiviral immune response. Natural killer T (NKT) cells are a subset of immunoregulatory CD1d-restricted T lymphocytes believed to bridge the innate and adaptive immune responses. It is shown here that the VV-encoded molecules, B1R and H5R, play a role in the ability of VV to inhibit CD1d-mediated antigen presentation to NKT cells. These are the first poxvirus-encoded molecules identified that can play such a role in the evasion of an important component of the innate immune response. |
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Keywords: | Antigen presentation CD1d Immune evasion NKT cells Vaccinia virus |
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