Photo Credit: Marco Marca
Inflammatory bowel disease (IBD), a chronic inflammatory condition of the human intestine, comprises Crohn’s Disease (CD) and Ulcerative Colitis (UC). IBD causes severe gastrointestinal symptoms and increases the risk of developing colorectal carcinoma. Although the etiology of IBD remains ambiguous, complex interactions between genetic predisposition, microbiota, epithelial barrier, and immune factors have been implicated. The disruption of intestinal homeostasis is a cardinal characteristic of IBD. Patients with IBD exhibit intestinal microbiota dysbiosis, impaired epithelial tight junctions, and immune dysregulation; however, the relationship between them is not completely understood. As the largest body surface is exposed to the external environment, the gastrointestinal tract epithelium is continuously subjected to environmental and endogenous stressors that can disrupt cellular homeostasis and survival. Heat shock proteins (HSPs) are endogenous factors that play crucial roles in various physiological processes, such as maintaining intestinal homeostasis and influencing IBD progression. Specifically, HSPs share an intricate association with microbes, intestinal epithelium, and the immune system. In this review, we aim to elucidate the impact of HSPs on IBD development by examining their involvement in the interactions between the intestinal microbiota, epithelial barrier, and immune system. The recent clinical and animal models and cellular research delineating the relationship between HSPs and IBD are summarized. Additionally, new perspectives on IBD treatment approaches have been proposed.
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