短链脂肪酸通过抑制白细胞介素17A和NF-κB信号通路减轻γδT细胞介导的炎症反应

doi:10.3969/j.issn.1006-5725.2024.08.012

Abstract

Abstract:

Objective To explore the mechanism of short-chain fatty acids in alleviating γδT cell-mediated inflammatory response. Methods A certain concentration of short-chain fatty acids was used to intervene in rat intestinal-derived γδT cells. CCK-8 was used to detect the effect of shortchain fatty acids on γδT activity. ELISA was used to detect the content of the IL-17A， RT-qPCR was utilized to detect the expression of the IL-17A， and flow cytometry was applied to analyze the IL-17⁺γδT cell frequency. The effect of SCFAs on IL-17A and NF-κB signaling pathway in γδT cells were observed by Western blot. Results CCK-8 assay showed that the concentration of sodium acetate was less than or equal to 0.5 mmol/L， and the concentrations of sodium propionate， sodium butyrate， and mixed short-chain fatty acids were less than or equal to 0.25 mmol/L， indicating no inhibitory effect on the proliferation of γδT cells. ELISA and RT-qPCR showed that the treatment of γδT cells with sodium propionate， sodium butyrate， and mixed short-chain fatty acids significantly decreased the levels of IL-17A compared with the control group. Flow cytometry revealed a significant decrease in the proportion of IL-17⁺γδT cells under the treatment of sodium propionate， sodium butyrate， mixed shortchain fatty acids， and TSA intervention. Western blot found that sodium propionate， sodium butyrate， and mixed shortchain fatty acids could inhibit the expression of IL-17A and IKK， as well as the phosphorylation level of NF-κB. Conclusion Shortchain fatty acids could inhibit the activation of IL-17A and NF-κB signaling pathway in γδT cells， thereby alleviating the inflammatory response in the body.

Key words: short-chain fatty acids, γδT cell, IL-17A, NF-κB

CLC Number:

R392

Pan LIU,Deshuang XI,Rui HUANG,Yilin TENG,Rui LIU,Gaofeng ZENG,Shaohui. ZONG. Short⁃chain fatty acids alleviate γδT cell⁃mediated inflammatory response via inhibiting IL⁃17A and NF⁃κB signaling pathway[J]. The Journal of Practical Medicine, 2024, 40(8): 1088-1094.

Figures/Tables 7

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基因	引物	序列（5′- 3′）
IL-17A	Forward primer	AGTGTGTCCAAACGCCGAG
IL-17A	Reverse primer	GTCCAGGGTGAAGTGGAACG
IL-10	Forward primer	AGCAAAGGCCATTCCATCCG
IL-10	Reverse primer	CACTTGACTGAAGGCAGCCC
GAPDH	Forward primer	GGCACAGTCAAGGCTGAGAATG
GAPDH	Reverse primer	ATGGTGGTGAAGACGCCAGTA

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Short⁃chain fatty acids alleviate γδT cell⁃mediated inflammatory response via inhibiting IL⁃17A and NF⁃κB signaling pathway

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