Abstract:Micronuclei (MN) are aberrant cytosolic compartments containing broken genomic fragments or whole lagging chromosomes. MN envelopes irreversibly rupture, allowing the viral receptor cGAS to localize to MN and initiate an inflammatory signalling cascade. Here, we demonstrate that MN envelope rupture is not sufficient for cGAS localization. Unlike MN that arise following ionizing radiation (IR), ruptured MN generated from acute transcription stressors DRB or siSRSF1 are refractory to cGAS localization. Recruitme… Show more
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