IRF1 and IRF2 regulate the non-canonical inflammasome.
Sara J ThygesenKatryn J StaceyPublished in: EMBO reports (2019)
The non-canonical inflammasome mediates pyroptotic cell death in response to bacterial lipopolysaccharide (LPS) found in the cytosol. Understanding the mechanism and regulation of this system is of great interest, given its central role in mouse models of bacterial septic shock. In this issue of EMBO Reports, Benaoudia and colleagues sought to discover extra players in the human non-canonical inflammasome using a CRISPR library screen; the only strongly positive hit apart from the known components caspase-4 and gasdermin D was interferon regulatory factor-2 (IRF2) [1 ]. IRF2 was found to be a transcriptional activator of caspase-4, and in its absence, induction of IRF1 could substitute to maintain caspase-4 expression.
Keyphrases
- cell death
- dendritic cells
- septic shock
- induced apoptosis
- inflammatory response
- endothelial cells
- transcription factor
- cell cycle arrest
- poor prognosis
- gene expression
- crispr cas
- high throughput
- genome editing
- toll like receptor
- binding protein
- nuclear factor
- long non coding rna
- anti inflammatory
- adverse drug
- cell proliferation
- endoplasmic reticulum stress
- heat shock protein