NLRP1-dependent activation of Gasdermin D in neutrophils controls cutaneous leishmaniasis.
Michiel GorisKatiuska PasselliSanam PeyvandiMiriam Díaz-VarelaOaklyne BillionBorja Prat-LuriBenjamin DemarcoChantal DespondsManon TermoteEva IniguezSomaditya DeyBernard MalissenShaden KamhawiBenjamin P HurrellPetr BrozFabienne Tacchini-CottierPublished in: PLoS pathogens (2024)
Intracellular pathogens that replicate in host myeloid cells have devised ways to inhibit the cell's killing machinery. Pyroptosis is one of the host strategies used to reduce the pathogen replicating niche and thereby control its expansion. The intracellular Leishmania parasites can survive and use neutrophils as a silent entry niche, favoring subsequent parasite dissemination into the host. Here, we show that Leishmania mexicana induces NLRP1- and caspase-1-dependent Gasdermin D (GSDMD)-mediated pyroptosis in neutrophils, a process critical to control the parasite-induced pathology. In the absence of GSDMD, we observe an increased number of infected dermal neutrophils two days post-infection. Using adoptive neutrophil transfer in neutropenic mice, we show that pyroptosis contributes to the regulation of the neutrophil niche early after infection. The critical role of neutrophil pyroptosis and its positive influence on the regulation of the disease outcome was further demonstrated following infection of mice with neutrophil-specific deletion of GSDMD. Thus, our study establishes neutrophil pyroptosis as a critical regulator of leishmaniasis pathology.
Keyphrases
- nlrp inflammasome
- induced apoptosis
- plasmodium falciparum
- cell therapy
- high fat diet induced
- acute myeloid leukemia
- reactive oxygen species
- cell cycle arrest
- single cell
- type diabetes
- dendritic cells
- toxoplasma gondii
- diabetic rats
- candida albicans
- endoplasmic reticulum stress
- transcription factor
- signaling pathway
- adipose tissue
- mesenchymal stem cells
- high glucose
- pi k akt