ATG7 and ATG14 restrict cytosolic and phagosomal Mycobacterium tuberculosis replication in human macrophages.

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Version: Final published version
License: CC BY 4.0
Serval ID
serval:BIB_F452BB2C0D26
Type
Article: article from journal or magazin.
Collection
Publications
Institution
Title
ATG7 and ATG14 restrict cytosolic and phagosomal Mycobacterium tuberculosis replication in human macrophages.
Journal
Nature microbiology
Author(s)
Aylan B., Bernard E.M., Pellegrino E., Botella L., Fearns A., Athanasiadi N., Bussi C., Santucci P., Gutierrez M.G.
ISSN
2058-5276 (Electronic)
ISSN-L
2058-5276
Publication state
Published
Issued date
05/2023
Peer-reviewed
Oui
Volume
8
Number
5
Pages
803-818
Language
english
Notes
Publication types: Journal Article
Publication Status: ppublish
Abstract
Autophagy is a cellular innate-immune defence mechanism against intracellular microorganisms, including Mycobacterium tuberculosis (Mtb). How canonical and non-canonical autophagy function to control Mtb infection in phagosomes and the cytosol remains unresolved. Macrophages are the main host cell in humans for Mtb. Here we studied the contributions of canonical and non-canonical autophagy in the genetically tractable human induced pluripotent stem cell-derived macrophages (iPSDM), using a set of Mtb mutants generated in the same genetic background of the common lab strain H37Rv. We monitored replication of Mtb mutants that are either unable to trigger canonical autophagy (Mtb ΔesxBA) or reportedly unable to block non-canonical autophagy (Mtb ΔcpsA) in iPSDM lacking either ATG7 or ATG14 using single-cell high-content imaging. We report that deletion of ATG7 by CRISPR-Cas9 in iPSDM resulted in increased replication of wild-type Mtb but not of Mtb ΔesxBA or Mtb ΔcpsA. We show that deletion of ATG14 resulted in increased replication of both Mtb wild type and the mutant Mtb ΔesxBA. Using Mtb reporters and quantitative imaging, we identified a role for ATG14 in regulating fusion of phagosomes containing Mtb with lysosomes, thereby enabling intracellular bacteria restriction. We conclude that ATG7 and ATG14 are both required for restricting Mtb replication in human macrophages.
Pubmed
Web of science
Open Access
Yes
Create date
03/04/2023 14:27
Last modification date
23/01/2024 7:37
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