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Front Immunol. 2012 Feb 10;3:14. doi: 10.3389/fimmu.2012.00014. eCollection 2012.

The Role of XCR1 and its Ligand XCL1 in Antigen Cross-Presentation by Murine and Human Dendritic Cells.

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Molecular Immunology, Robert Koch-Institute Berlin, Germany.


Recently, the chemokine receptor XCR1 has been found to be exclusively expressed on a subset of dendritic cell (DC) known to be involved in antigen cross-presentation. This review aims to summarize the known biology of the XCR1 receptor and its chemokine ligand XCL1, both in the mouse and the human. Further, any involvement of this receptor-ligand pair in antigen uptake, cross-presentation, and induction of innate and adaptive cytotoxic immunity is explored. The concept of antigen delivery to DC via the XCR1 receptor is discussed as a vaccination strategy for selective induction of cytotoxic immunity against certain pathogens or tumors.


XCL1; XCR1; antigen cross-presentation; antigen targeting; dendritic cells; vaccination

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