Caspase-8 mediates inflammation and disease in rodent malaria
Pereira, Larissa M. N. ; Assis, Patricia Aparecida ; de Araujo, Natalia M. ; Fernandes Durso, Danielle ; Junqueira, Caroline ; Ataide, Marco Antonio ; Pereira, Dhelio B. ; Lien, Egil ; Fitzgerald, Katherine A ; Zamboni, Dario S. ... show 2 more
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Abstract
Earlier studies indicate that either the canonical or non-canonical pathways of inflammasome activation have a limited role on malaria pathogenesis. Here, we report that caspase-8 is a central mediator of systemic inflammation, septic shock in the Plasmodium chabaudi-infected mice and the P. berghei-induced experimental cerebral malaria (ECM). Importantly, our results indicate that the combined deficiencies of caspases-8/1/11 or caspase-8/gasdermin-D (GSDM-D) renders mice impaired to produce both TNFalpha and IL-1beta and highly resistant to lethality in these models, disclosing a complementary, but independent role of caspase-8 and caspases-1/11/GSDM-D in the pathogenesis of malaria. Further, we find that monocytes from malaria patients express active caspases-1, -4 and -8 suggesting that these inflammatory caspases may also play a role in the pathogenesis of human disease.
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Pereira LMN, Assis PA, de Araújo NM, Durso DF, Junqueira C, Ataíde MA, Pereira DB, Lien E, Fitzgerald KA, Zamboni DS, Golenbock DT, Gazzinelli RT. Caspase-8 mediates inflammation and disease in rodent malaria. Nat Commun. 2020 Sep 14;11(1):4596. doi: 10.1038/s41467-020-18295-x. PMID: 32929083; PMCID: PMC7490701. Link to article on publisher's site