A Potential Prophylactic Probiotic for Inflammatory Bowel Disease: The Overall Investigation of Clostridium tyrobutyricum ATCC25755 Attenuates LPS‐Induced Inflammation via Regulating Intestinal Immune Cells. Issue 14 (9th June 2021)

• Record Type: Journal Article
• Authors: Xiao, Zhiping; Liu, Lujie; Jin, Yuyue; Pei, Xun; Sun, Wanjing; Wang, Minqi
• Is Part Of: Molecular nutrition & food research. Volume 65:Issue 14(2021)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2021-06-09
• Subjects: Clostridium tyrobutyricum (Ct) -- immune cells -- inflammatory bowel disease (IBD) -- intestine -- probiotics; Food -- Biotechnology -- Periodicals; Food -- Microbiology -- Periodicals; Nutrition -- Periodicals; Food -- Toxicology -- Periodicals; Nutrition -- Periodicals; Food Microbiology -- Periodicals; Food Technology -- Periodicals; Molecular Biology -- Periodicals; 664.0705
• DOI: 10.1002/mnfr.202001213
• Languages: English
• ISSNs: 1613-4125

Abstract

Abstract : Scope: This study aims to roundly investigate whether Clostridium tyrobutyricum (Ct) alleviates inflammation via regulating immune cells in the small intestines. Methods and Results: Mice are pre‐treated with different concentrations of Ct follow by LPS stimulation. Ct maintains the mice body weight under inflammation. In response to LPS, 10 7 CFU mL −1 Ct decreases the mRNA expression of inflammatory cytokines in the duodenum, while 10 8 CFU mL −1 Ct reduces inflammatory cytokines expression in both duodenum and ileum and protected intestinal morphology. The small intestinal immune cells are analyzed using flow cytometry. Ct decreases the numbers of macrophages and mast cells in the intestines in response to LPS. In the duodenum, Ct enhances dentritic cells (DCs), regulatory T cells (Tregs), and T helper cell 17 (Th17) proportions. Ct decreases DCs and Tregs proportions, while enhances Th17 numbers in the ileum. The underlying mechanism of Ct in preventing inflammation may rely on the physiological immune cell composition of the intestines. In response to LPS, Ct may mainly stimulate Tregs via activating DCs in the duodenum while trigger Th17 cells in the ileum, thereby maintaining the intestinal homeostasis. Conclusion: Ct alleviates the LPS‐induce inflammation via regulating different immune cell types in the small intestines, highlighting that Ct is a potential prophylactic probiotic in intestinal diseases. Abstract : Clostridium tyrobutyricum alleviates LPS‐induced intestinal dysfunction in both duodenum and ileum via regulating intestinal immune cells. In response to LPS, Clostridium tyrobutyricum blocks the over‐activation of macrophages and stimulates the regulatory T cells or T helper cell 17 via dendritic cells in the duodenum, while in the ileum, Clostridium tyrobutyricum inhibits mast cells and activates T helper 17 under inflammation.