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Gasdermin E is Dispensable for H1N1 Influenza Virus Pathogenesis in Mice

ABSTRACT: Targeting cell death pathways, including pyroptosis and necroptosis, has been shown to mitigate influenza virus infection severity. Here, we examined whether pyroptosis specifically driven by the pore-forming protein gasdermin E (GSDME) is involved in regulating influenza virus infection outcomes. We found that Gsdme-/- mice showed similar weight loss and survival in severe A/PR/8/34 (H1N1) virus infections compared to WT counterparts. Likewise, lung dysfunction, histopathological damage, viral titers, and inflammatory cytokine levels were similar in the two groups. Global transcriptomic analysis also revealed similar gene expression programs in WT versus Gsdme-/- mouse lungs at baseline and in response to infection. To confirm the generality of these findings, we infected mice with 2009 pandemic H1N1 virus and again observed similar weight loss, mortality, and lung dysfunction in WT and Gsdme-/- mice. Our results overall demonstrate that GSDME contributes negligibly to the host response against H1N1 influenza virus, refining our understanding of cell death pathways in influenza pathogenesis.

ORGANISM(S): Mus musculus

PROVIDER: GSE302673 | GEO | 2025/11/19

REPOSITORIES: GEO

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