Cross-Presentation of Cell-Associated Antigens by MHC Class I in Dendritic Cell Subsets

Enric Gutiérrez-Martínez,R. Planès,G. Anselmi,M. Reynolds,Shinelle Menezes,Aimé Cézaire Adiko,L. Saveanu,P. Guermonprez

Published 2015 in Frontiers in Immunology

ABSTRACT

Dendritic cells (DCs) have the unique ability to pick up dead cells carrying antigens in tissue and migrate to the lymph nodes where they can cross-present cell-associated antigens by MHC class I to CD8+ T cells. There is strong in vivo evidence that the mouse XCR1+ DCs subset acts as a key player in this process. The intracellular processes underlying cross-presentation remain controversial and several pathways have been proposed. Indeed, a wide number of studies have addressed the cellular process of cross-presentation in vitro using a variety of sources of antigen and antigen-presenting cells. Here, we review the in vivo and in vitro evidence supporting the current mechanistic models and disscuss their physiological relevance to the cross-presentation of cell-associated antigens by DCs subsets.

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