PMID- 32286311 OWN - NLM STAT- MEDLINE DCOM- 20200721 LR - 20211204 IS - 2041-1723 (Electronic) IS - 2041-1723 (Linking) VI - 11 IP - 1 DP - 2020 Apr 14 TI - Kinesin-1 regulates antigen cross-presentation through the scission of tubulations from early endosomes in dendritic cells. PG - 1817 LID - 10.1038/s41467-020-15692-0 [doi] LID - 1817 AB - Dendritic cells (DCs) constitute a specialized population of immune cells that present exogenous antigen (Ag) on major histocompatibility complex (MHC) class I molecules to initiate CD8 + T cell responses against pathogens and tumours. Although cross-presentation depends critically on the trafficking of Ag-containing intracellular vesicular compartments, the molecular machinery that regulates vesicular transport is incompletely understood. Here, we demonstrate that mice lacking Kif5b (the heavy chain of kinesin-1) in their DCs exhibit a major impairment in cross-presentation and thus a poor in vivo anti-tumour response. We find that kinesin-1 critically regulates antigen cross-presentation in DCs, by controlling Ag degradation, the endosomal pH, and MHC-I recycling. Mechanistically, kinesin-1 appears to regulate early endosome maturation by allowing the scission of endosomal tubulations. Our results highlight kinesin-1's role as a molecular checkpoint that modulates the balance between antigen degradation and cross-presentation. FAU - Belabed, Meriem AU - Belabed M AD - Universite de Paris, Imagine Institute, Laboratory of Molecular basis of altered immune homeostasis, INSERM UMR1163, F-75015, Paris, France. FAU - Mauvais, Francois-Xavier AU - Mauvais FX AUID- ORCID: 0000-0002-5240-4280 AD - Universite de Paris, INSERM, U1151, Institut Necker Enfants Malades; Universite de Paris; CNRS, UMR8253, F-75015, Paris, France. FAU - Maschalidi, Sophia AU - Maschalidi S AD - Universite de Paris, Imagine Institute, Laboratory of Molecular basis of altered immune homeostasis, INSERM UMR1163, F-75015, Paris, France. FAU - Kurowska, Mathieu AU - Kurowska M AD - Universite de Paris, Imagine Institute, Laboratory of Molecular basis of altered immune homeostasis, INSERM UMR1163, F-75015, Paris, France. FAU - Goudin, Nicolas AU - Goudin N AD - Cell Imaging Facility, Universite de Paris, Imagine Institute, F-75015, Paris, France. FAU - Huang, Jian-Dong AU - Huang JD AUID- ORCID: 0000-0001-7531-2816 AD - School of Biomedical Sciences, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong, China. FAU - Fischer, Alain AU - Fischer A AD - Universite de Paris, Imagine Institute, Laboratory of Molecular basis of altered immune homeostasis, INSERM UMR1163, F-75015, Paris, France. AD - Immunology and Pediatric Hematology Department, Necker Children's Hospital, AP-HP, F-75015, Paris, France. AD - College de France, F-75005, Paris, France. FAU - de Saint Basile, Genevieve AU - de Saint Basile G AD - Universite de Paris, Imagine Institute, Laboratory of Molecular basis of altered immune homeostasis, INSERM UMR1163, F-75015, Paris, France. FAU - van Endert, Peter AU - van Endert P AUID- ORCID: 0000-0003-3782-0750 AD - Universite de Paris, INSERM, U1151, Institut Necker Enfants Malades; Universite de Paris; CNRS, UMR8253, F-75015, Paris, France. FAU - Sepulveda, Fernando E AU - Sepulveda FE AUID- ORCID: 0000-0001-5865-4929 AD - Universite de Paris, Imagine Institute, Laboratory of Molecular basis of altered immune homeostasis, INSERM UMR1163, F-75015, Paris, France. AD - Centre national de la recherche scientifique (CNRS), F-75015, Paris, France. FAU - Menasche, Gael AU - Menasche G AUID- ORCID: 0000-0001-6671-3642 AD - Universite de Paris, Imagine Institute, Laboratory of Molecular basis of altered immune homeostasis, INSERM UMR1163, F-75015, Paris, France. gael.menasche@inserm.fr. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20200414 PL - England TA - Nat Commun JT - Nature communications JID - 101528555 RN - 0 (Acids) RN - 0 (Antigens) RN - 0 (Antigens, CD) RN - 0 (Histocompatibility Antigens Class I) RN - 9006-59-1 (Ovalbumin) RN - EC 3.6.4.4 (Kinesins) SB - IM MH - Acids/metabolism MH - Animals MH - Antigen Presentation/*immunology MH - Antigens/metabolism MH - Antigens, CD/metabolism MH - Bone Marrow Cells/cytology MH - Cell Proliferation MH - Dendritic Cells/*metabolism MH - Endocytosis MH - Endosomes/*metabolism MH - Histocompatibility Antigens Class I/metabolism MH - Kinesins/deficiency/*metabolism MH - Mice, Knockout MH - Mice, Transgenic MH - Microtubules/metabolism MH - Neoplasms/pathology MH - Ovalbumin/immunology MH - Solubility PMC - PMC7156633 COIS- The authors declare no competing interests. EDAT- 2020/04/15 06:00 MHDA- 2020/07/22 06:00 PMCR- 2020/04/14 CRDT- 2020/04/15 06:00 PHST- 2019/05/31 00:00 [received] PHST- 2020/03/25 00:00 [accepted] PHST- 2020/04/15 06:00 [entrez] PHST- 2020/04/15 06:00 [pubmed] PHST- 2020/07/22 06:00 [medline] PHST- 2020/04/14 00:00 [pmc-release] AID - 10.1038/s41467-020-15692-0 [pii] AID - 15692 [pii] AID - 10.1038/s41467-020-15692-0 [doi] PST - epublish SO - Nat Commun. 2020 Apr 14;11(1):1817. doi: 10.1038/s41467-020-15692-0.