Journal
CRITICAL REVIEWS IN FOOD SCIENCE AND NUTRITION
Volume 62, Issue 1, Pages 1-12Publisher
TAYLOR & FRANCIS INC
DOI: 10.1080/10408398.2020.1854675
Keywords
SCFAs; immunity; inflammation; metabolism; tumor cell
Categories
Funding
- National Natural Science Foundation of China [82003761, 81873838]
- Zhejiang Provincial Natural Science Foundation of China [LY16H160025, Y19H040054]
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Short-chain fatty acids (SCFAs) are important metabolites of gut microbiome and play a vital role in host health. They are key energy sources for colon and ileum cells, regulate intestinal epithelial barrier and defense functions, modulate the function of innate immune cells, regulate the differentiation of T cells and B cells, and also inhibit tumor cell proliferation and promote apoptosis.
Short-chain fatty acids (SCFAs) are carboxylic acids with carbon atom numbers less than 6, which are important metabolites of gut microbiome. Existing research shows that SCFAs play a vital role in the health and disease of the host. First, SCFAs are the key energy source for colon and ileum cells, and affect the intestinal epithelial barrier and defense functions by regulating related gene expression. Second, SCFAs regulate the function of innate immune cells to participate in the immune system, such as macrophages, neutrophils and dendritic cells. Third, SCFAs can also regulate the differentiation of T cells and B cells and the antigen-specific adaptive immunity mediated by them. Besides, SCFAs are raw materials for sugar and lipid synthesis, which provides a theoretical basis for studying the potential role of SCFAs in regulating energy homeostasis and metabolism. There are also studies showing that SCFAs inhibit tumor cell proliferation and promote apoptosis. In this article, we summarized in detail the role of SCFAs in immunity, inflammation and metabolism, and briefly introduced the role of SCFAs in tumor cell survival. It provides a systematic theoretical basis for the study of SCFAs as potential drugs to promote human health.
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