The intracellular protein HMGB1 is released from cells and acts as a damage-associated molecular pattern molecule during many diseases, including inflammatory bowel disease (IBD); however, the intracellular function of HMGB1 during inflammation is poorly understood. Here, we demonstrated that cytosolic HMGB1 regulates apoptosis by protecting the autophagy proteins beclin 1 and ATG5 from calpain-mediated cleavage during inflammation. Colitis in mice with an intestinal epithelial cell–specific
Xiaorong Zhu, Jeannette S. Messer, Yunwei Wang, Fanfei Lin, Candace M. Cham, Jonathan Chang, Timothy R. Billiar, Michael T. Lotze, David L. Boone, Eugene B. Chang
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