ArticleVeterinary research2025
Corynebacterium pseudotuberculosis phospholipase D targets mitochondrial sphingomyelin and induces NLRP3-GSDMD axis-mediated pyroptosis in macrophages to promote infection.
Article in Veterinary research, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.
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1 citing paper in PubMed.
- Comprehensive pathological insights and molecular detection of caseous lymphadenitis caused byJournal of advanced veterinary and animal research · 2026Article
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13 authors.
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Abstract
Infection by Corynebacterium pseudotuberculosis (Cp), a facultative intracellular bacterium, causes mainly purulent inflammation and chronic granulomas in animals and humans. Pyroptosis is a proinflammatory form of programmed cell death that is important in response to pathogen infection. The role of pyroptosis in Cp infection and the related mechanisms are still unclear. Here, we reveal that Cp infection induces pyroptosis in macrophages. The inhibition of pyroptosis by disulfiram (DSF) or dimethyl fumarate (DMF) decreases the pathogenicity of Cp in mice and prevents the escape of this pathogen from infected macrophages. In contrast, LPS treatment achieves the opposite results in mice and macrophages infected with Cp. In addition, we revealed that phospholipase D (PLD) is a key virulence factor that induces pyroptosis and subsequently promotes Cp escape and spread in macrophages and confirmed that mutation of the enzyme active site at D66S, G80I, K114N, and G242P weakens PLD-induced pyroptosis. Furthermore, the indispensable role of the NLRP3-GSDMD axis in PLD-induced pyroptosis was confirmed using Nlrp3 knockout (Nlrp3
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