Journal
CANCER LETTERS
Volume 515, Issue -, Pages 73-85Publisher
ELSEVIER IRELAND LTD
DOI: 10.1016/j.canlet.2021.05.018
Keywords
Dietary fiber; Oroxylin A; Mucus layer; Gut microbiota; Eubacterium coprostanoligenes
Categories
Funding
- National Natural Science Foundation of China [81903626, 81872899]
- Social Development Project of Jiangsu Provincial Science and Technology Department [BE2018711]
- Natural Science Foundation of Jiangsu Province [BK20180576]
- Fundamental Research Funds for the Central Universities [2632021ZD03]
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Oroxylin A, a natural flavonoid, has been found to ameliorate low-grade colonic inflammation caused by fiber deficiency and prevent colitis-associated colon cancer by altering gut microbiota, particularly by increasing levels of Eubacterium coprostanoligenes. This suggests a potential therapeutic strategy for intestinal diseases.
Dietary fiber intake helps to maintain gut homeostasis. Fiber deficiency causes commensals to utilize mucins as an energy source to destroy mucus layer, thus promoting susceptibility to inflammatory bowel disease. Here, we reported that oroxylin A, a natural flavonoid, ameliorated low-grade colonic inflammation caused by fiber deficiency, alleviated colitis, and further prevented colitis-associated colon cancer in mice. The antiinflammatory effect of oroxylin A was due to its alteration of gut microbiota. We found that the levels of Eubacterium coprostanoligenes was significantly increased by oroxylin A and the colonized Eubacterium coprostanoligenes significantly protected against colitis and carcinogenesis in colon of mice. Together, our results in this study suggest that oroxylin A may reduce the susceptibility to intestinal diseases by increasing the level of Eubacterium coprostanoligenes which could provide a therapeutic alternation for the treatment of intestinal diseases.
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