Cited by 983interferon and immune responsesCell death mechanisms and regulationInflammasome and immune disorders

The DOI matches its Crossref record; 68 of the 68 references it cites were found in a registry or an index.

Apoptotic Caspases Suppress mtDNA-Induced STING-Mediated Type I IFN Production

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Abstract

Activated caspases are a hallmark of apoptosis induced by the intrinsic pathway, but they are dispensable for cell death and the apoptotic clearance of cells in vivo. This has led to the suggestion that caspases are activated not just to kill but to prevent dying cells from triggering a host immune response. Here, we show that the caspase cascade suppresses type I interferon (IFN) production by cells undergoing Bak/Bax-mediated apoptosis. Bak and Bax trigger the release of mitochondrial DNA. This is recognized by the cGAS/STING-dependent DNA sensing pathway, which initiates IFN production. Activated caspases attenuate this response. Pharmacological caspase inhibition or genetic deletion of caspase-9, Apaf-1, or caspase-3/7 causes dying cells to secrete IFN-β. In vivo, this precipitates an elevation in IFN-β levels and consequent hematopoietic stem cell dysfunction, which is corrected by loss of Bak and Bax. Thus, the apoptotic caspase cascade functions to render mitochondrial apoptosis immunologically silent.

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Crossref · 10.1016/j.cell.2014.11.036

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Authors
White, M. J., McArthur, K., Metcalf, D., Lane, R. M., Cambier, J. C., Herold, M. J., van Delft, M. F., Bedoui, S., Lessene, G., Ritchie, M. E., Huang, D. C. S., & Kile, B. T.
Affiliations
  • The University of Melbourne (AU)
  • Walter and Eliza Hall Institute of Medical Research (AU)
  • National Jewish Health (US)
Corresponding author
  • White, Michael J.
  • Kile, Benjamin T.
Venue
Cell
Publisher
Elsevier BV
Published
2014-12
Volume
159
Issue
7
Pages
1549-1562
ISSN
0092-8674 (ISSN-L)
OpenAlex
W2028107828
Cited by
983
References
68
Citations by year
2026: 89 · 2025: 88 · 2024: 118 · 2023: 107 · 2022: 111 · 2021: 94 · 2020: 93 · 2019: 61 · 2018: 76 · 2017: 63 · 2016: 39 · 2015: 40
FWCI
21.61
Type
journal article
Language
en
Open access
Locations
  • Cell (publishedVersion)
  • PubMed (publishedVersion)
  • Europe PMC (PubMed Central) (acceptedVersion)
  • PubMed Central (acceptedVersion)
  • Adelaide Research & Scholarship (AR&S) (University of Adelaide) (submittedVersion)
Funders
National Institute of Allergy and Infectious Diseases (R21AI099346)
Topics
  • Life Sciences › Immunology and Microbiology › Immunology › interferon and immune responses
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Cell death mechanisms and regulation
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Inflammasome and immune disorders
Keywords
caspases, apoptosis, type I interferon, STING, cGAS, mitochondrial DNA, Bak, Bax, caspase-9, Apaf-1, caspase-3, caspase-7, interferon-beta, hematopoietic stem cells
MeSH terms
STING Protein, Animals, Crosses, Genetic, DNA, Mitochondrial, Female, Hematopoietic Stem Cells, Interferon Type I, Male, Membrane Proteins, Mice, Inbred C57BL, Signal Transduction, Apoptosis, Caspases, Caspase 9

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