ArticleCell death & disease2025
Executioner caspases degrade essential mediators of pathogen-host interactions to inhibit growth of intracellular Listeria monocytogenes.
Article in Cell death & disease, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.
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Who cites it
3 citing papers in PubMed.
- Human non-canonical inflammasomes activate CASP3 to limit intracellular Salmonella replication in macrophages.PLoS pathogens · 2026Article
- A self-assembled and HTheranostics · 2025Article
- Virulence Gene Profiling and Molecular Typing of Clinical Isolates ofInfection and drug resistance · 2025Article
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Authors and funding
14 authors.
Funding
Abstract
Cell death mediated by executioner caspases is essential during organ development and for organismal homeostasis. The mechanistic role of activated executioner caspases in antibacterial defense during infections with intracellular bacteria, such as Listeria monocytogenes, remains elusive. Cell death upon intracellular bacterial infections is considered altruistic to deprive the pathogens of their protective niche. To establish infections in a human host, Listeria monocytogenes deploy virulence mediators, including membranolytic listeriolysin O (LLO) and the invasion associated protein p60 (Iap), allowing phagosomal escape, intracellular replication and cell-to-cell spread. Here, by means of chemical and genetical modifications, we show that the executioner caspases-3 and -7 efficiently inhibit growth of intracellular Listeria monocytogenes in host cells. Comprehensive proteomics revealed multiple caspase-3 substrates in the Listeria secretome, including LLO, Iap and various other proteins crucially involved in pathogen-host interactions. Listeria secreting caspase-uncleavable LLO or Iap gained significant growth advantage in epithelial cells. With that, we uncovered an underappreciated defense barrier and a non-canonical role of executioner caspases to degrade virulence mediators, thus impairing intracellular Listeria growth.
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