Exploring the role of IL-1β in inflammatory bowel disease pathogenesis
Frontiers in Medicine(2024)
Abstract
Interleukin 1 beta (IL-1 beta) is a significant mediator of inflammation and tissue damage in IBD. The balance between IL-1 beta and its endogenous inhibitor-IL-1Ra-, plays a critical role in both initiation and regulation of inflammation. However, the precise role of IL-1 beta as a causative factor in IBD or simply a consequence of inflammation remains unclear. This review summarizes current knowledge on the molecular and cellular characteristics of IL-1 beta, describes the existing evidence on the role of this cytokine as a modulator of intestinal homeostasis and an activator of inflammatory responses, and also discusses the role of microRNAs in the regulation of IL-1 beta-related inflammatory responses in IBD. Current evidence indicates that IL-1 beta is involved in several aspects during IBD as it greatly contributes to the induction of pro-inflammatory responses through the recruitment and activation of immune cells to the gut mucosa. In parallel, IL-1 beta is involved in the intestinal barrier disruption and modulates the differentiation and function of T helper (Th) cells by activating the Th17 cell differentiation, known to be involved in the pathogenesis of IBD. Dysbiosis in the gut can also stimulate immune cells to release IL-1 beta, which, in turn, promotes inflammation. Lastly, increasing evidence pinpoints the central role of miRNAs involvement in IL-1 beta-related signaling during IBD, particularly in the maintenance of homeostasis within the intestinal epithelium. In conclusion, given the crucial role of IL-1 beta in the promotion of inflammation and immune responses in IBD, the targeting of this cytokine or its receptors represents a promising therapeutic approach. Further research into the IL-1 beta-associated post-transcriptional modifications may elucidate the intricate role of this cytokine in immunomodulation.
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Key words
dysbiosis,inflammasome,inflammatory bowel disease,interleukin 1 beta,IL-1R,intestinal inflammation,miRNAs
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