Gut microbiota-derived bile acids in intestinal immunity, inflammation, and tumorigenesis

Inflammatory bowel disease (IBD) and colorectal cancer (CRC) are heterogeneous intestinal diseases that threaten the health of an increasing number of individuals as their lifestyles become westernized. New in-sights have been discovered with the development of various omics techniques, revealing that gut-micro-biota-derived metabolites play important roles in maintaining intestinal homeostasis and modulating the progression of intestinal diseases from both metabolic and immunological perspectives. Clinical metage-nomic and metabolomic studies have revealed links between microbial bile acid (BA) metabolism and IBD and CRC progression. Several BA-derived metabolites were recently been demonstrated to play a role in in-testinal immunity, providing fresh insights into how BAs affect the course of IBD and CRC. In this review, we discuss recent studies on the involvement of gut microbiota-derived BAs in intestinal immunity, inflamma-tion, and tumorigenesis along with human omics data to provide prospective insights into future prevention and treatment of IBD and CRC.

Automated summary

Inflammatory bowel disease (IBD) and colorectal cancer (CRC) are diverse intestinal diseases threatening an increasing number of individuals as their lifestyles become westernized. Recent research has found that gut microbiota-derived metabolites play a crucial role in maintaining intestinal homeostasis and modulating the progression of intestinal diseases.