GEOapplication/xmlftp://ftp.ncbi.nlm.nih.gov/geo/series/GSE337nnn/GSE337610/primaryOK200GenomicsMus musculusGenome binding/occupancy profiling by high throughput sequencinghttps://www.ncbi.nlm.nih.gov/geo/query/acc.cgi?acc=GSE337610GEOGSEfalseBacterial toxin sensing induces inflammasome-dependent innate immune memory that improves survival during sepsis [ATAC-seq]Adaptive immune memory generated by bacterial toxin vaccination is well established, but whether bacterial toxins can also induce innate immune memory, or trained immunity (TI), remains unclear. Here, we show that bacterial toxins elicit TI through NLRP3 inflammasome activation in mouse macrophages and in vivo in mice, and that this response is conserved in primary human macrophages. Stimulation with the CNF1 toxin induced an epigenetic remodeling, defining a TI-associated transcriptional signature. A targeted RNAi screen identified Bcl2a1 as a required mediator of TI, and epistasis analyses demonstrated that IL-1 signaling is essential for TI induction in macrophages. In a murine sepsis model, toxin-induced TI enhanced host resistance and improved survival. These findings establish toxin-driven inflammasome activation as trigger of TI and reveal its protective function during bacterial sepsis.2026/10/01GSE337610GSM9858773GSM9858774GSM9858775GSM9858770GSM9858771GSM985877224247337610Mus musculus