Cited by 70Autophagy in Disease and TherapyCell death mechanisms and regulationHIV Research and Treatment

DRAM Triggers Lysosomal Membrane Permeabilization and Cell Death in CD4+ T Cells Infected with HIV

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Laforge, Mireille, Limou, Sophie, Harper, Francis, Casartelli, Nicoletta, Rodrigues, Vasco, Silvestre, Ricardo, Haloui, Houda, Zagury, Jean-Francois +2 more·2013·PLoS Pathogens

Abstract

Productive HIV infection of CD4(+) T cells leads to a caspase-independent cell death pathway associated with lysosomal membrane permeabilization (LMP) and cathepsin release, resulting in mitochondrial outer membrane permeabilization (MOMP). Herein, we demonstrate that HIV infection induces damage-regulated autophagy modulator (DRAM) expression in a p53-dependent manner. Knocking down the expression of DRAM and p53 genes with specific siRNAs inhibited autophagy and LMP. However, inhibition of Atg5 and Beclin genes that prevents autophagy had a minor effect on LMP and cell death. The knock down of DRAM gene inhibited cytochrome C release, MOMP and cell death. However, knocking down DRAM, we increased viral infection and production. Our study shows for the first time the involvement of DRAM in host-pathogen interactions, which may represent a mechanism of defense via the elimination of infected cells.

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Authors
Laforge, M., Limou, S., Harper, F., Casartelli, N., Rodrigues, V., Silvestre, R., Haloui, H., Zagury, J.-F., Senik, A., & Estaquier, J.
Affiliations
  • Centre National de la Recherche Scientifique (FR)
  • Conservatoire National des Arts et Métiers (FR)
  • Institut Pasteur (FR)
Venue
PLoS Pathogens
Published
2013-05-02
Volume
9
Issue
5
Pages
e1003328
ISSN
  • 1553-7366 (ISSN-L)
  • 1553-7374
OpenAlex
W2000413234
Cited by
70
References
68
Citations by year
2025: 5 · 2024: 9 · 2023: 4 · 2022: 6 · 2021: 5 · 2020: 5 · 2019: 7 · 2018: 8 · 2017: 4 · 2016: 4 · 2015: 6 · 2014: 5 · 2013: 2
FWCI
4.14
Type
journal article
Language
en
Open access
Locations
  • PLoS Pathogens (publishedVersion, cc-by)
  • Europe PMC (PubMed Central) (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • HAL (submittedVersion)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
  • Figshare (submittedVersion, cc-by)
Funders
  • Centre National de la Recherche Scientifique
  • Ministério da Ciência, Tecnologia e Ensino Superior
  • Fundação para a Ciência e a Tecnologia (/2009)
Topics
  • Health Sciences › Medicine › Epidemiology › Autophagy in Disease and Therapy
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Cell death mechanisms and regulation
  • Life Sciences › Immunology and Microbiology › Virology › HIV Research and Treatment
Keywords
DRAM, lysosomal membrane permeabilization, CD4+ T cells, HIV infection, p53, autophagy, caspase-independent cell death, mitochondrial outer membrane permeabilization, cytochrome c release, host-pathogen interaction, viral clearance, ATG5, Beclin-1
MeSH terms
Autophagy-Related Protein 5, Autophagy, Female, Gene Expression Regulation, HIV, Humans, Intracellular Membranes, Lysosomes, Male, Membrane Proteins, Microtubule-Associated Proteins, Permeability, CD4-Positive T-Lymphocytes, HIV Infections, Tumor Suppressor Protein p53, Cytochromes c, Host-Pathogen Interactions

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