Abstract
In a recent article, He et al. report that, in response to dietary protein antigens, mouse intestinal epithelial cells (IECs) accumulate a newfound 13-kDa N terminus of gasdermin D (GSDMD-N13), cleaved by caspase-3/7. Unlike the pyroptotic 30-kDa fragment, GSDMD-N13 translocates to the nucleus, inducing CIITA and major histocompatibility complex class II (MHCII) expression to promote type 1 regulatory T (T1r) cell development, thus revealing its role in balancing immunity and food tolerance.
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