DRAM Triggers Lysosomal Membrane Permeabilization and Cell Death in CD4+ T Cells Infected with HIV
Open accessAbstract
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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DRAM1 provides a major contribution to lysosome-dependent cell death in HIV1-infected T cells by linking LMP to MOMP.
“The p53 effector DNA damage regulated autophagy modulator 1 (DRAM1) [773] provides a major contribution to lysosome-dependent cell death in HIV1-infected T cells by linking LMP to MOMP [770].”
From Molecular mechanisms of cell death: recommendations of the nomenclature committee on cell death 2018. (2018) · cites this paper as [770]
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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
- Publisher
- Public Library of Science (PLoS)
- Published
- 2013-05-02
- Volume
- 9
- Issue
- 5
- Pages
- e1003328
- ISSN
- 1553-7366 (ISSN-L)
- 1553-7374
- PMC
- PMC3642063
- 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
- gold
- doi.org
- 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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