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Involvement of LOX-1 in Dendritic Cell-Mediated Antigen Cross-Presentation

Abstract : Some exogenous antigens, such as heat shock proteins or apoptotic bodies, gain access to the MHC class I processing pathway and initiate CTL responses, a process called cross-priming. To be efficient in vivo, this process requires endocytosis of the antigen by dendritic cells via receptors which remain unidentified. Here, we report that scavenger receptors are the main HSP binding structures on human dendritic cells and identify LOX-1 as one of these molecules. A neutralizing anti-LOX-1 mAb inhibits Hsp70 binding to dendritic cells and Hsp70-induced antigen cross-presentation. In vivo, to target LOX-1 with a tumor antigen using an anti-LOX-1 mAb induces antitumor immunity. Thus, the scavenger receptor LOX-1 is certainly a promising target for cancer immunotherapy.
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https://www.hal.inserm.fr/inserm-02459032
Contributor : Yves Delneste <>
Submitted on : Wednesday, January 29, 2020 - 10:17:00 AM
Last modification on : Thursday, January 30, 2020 - 12:06:11 PM
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  • HAL Id : inserm-02459032, version 1

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Yves Delneste, Giovanni Magistrelli, Jean-François Gauchat, Jean-François Haeuw, Jean-Pierre Aubry, et al.. Involvement of LOX-1 in Dendritic Cell-Mediated Antigen Cross-Presentation. Immunity, Elsevier, 2002, 17, pp.353 - 362. ⟨inserm-02459032⟩

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