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File: /var/www/html/application/controllers/Detail.php
File: /var/www/html/index.php
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File: /var/www/html/application/controllers/Detail.php
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File: /var/www/html/application/controllers/Detail.php
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CXCR3 chemokine receptor enables local CD8(+) T cell migration for the destruction of virus-infected cells. | LitMetric
CD8(+) T cells play a critical role in limiting peripheral virus replication, yet how they locate virus-infected cells within tissues is unknown. Here, we have examined the environmental signals that CD8(+) T cells use to localize and eliminate virus-infected skin cells. Epicutaneous vaccinia virus (VV) infection, mimicking human smallpox vaccination, greatly increased expression of the CXCR3 chemokine receptor ligands CXCL9 and CXCL10 in VV-infected skin. Despite normal T cell numbers in the skin, Cxcr3(-/-) mice exhibited dramatically impaired CD8(+)-T-cell-dependent virus clearance. Intravital microscopy revealed that Cxcr3(-/-) T cells were markedly deficient in locating, engaging, and killing virus-infected cells. Further, transfer of wild-type CD8(+) T cells restored viral clearance in Cxcr3(-/-) animals. These findings demonstrate a function for CXCR3 in enhancing the ability of tissue-localized CD8(+) T cells to locate virus-infected cells and thereby exert anti-viral effector functions.
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