Caspase-8 mediates inflammation and disease in rodent malaria
LMN Pereira, PA Assis, NM de Araújo, DF Durso… - Nature …, 2020 - nature.com
Nature communications, 2020•nature.com
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 TNFα and IL-1β …
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 TNFα and IL-1β …
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 TNFα and IL-1β 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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