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Updated: Jun 2, 2025

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微生物群衍生蛋白与IL-23协同作用,在模型3型先天性淋巴细胞中驱动IL22的产生

Yanling Wang¹, David S J Allan², Andrew T Gewirtz¹

¹Center for Inflammation, Immunity, & Infection, Institute for Biomedical Sciences, Georgia State University, Atlanta, Georgia, United States of America.

|January 13, 2025

概括

肠道微生物,特别是细菌蛋白质,刺激3型先天性淋巴细胞 (ILC3) 产生IL-22,这对肠道健康至关重要. 这表明了针对免疫调节的微生物群的潜在治疗策略.

科学领域:

免疫学免疫学免疫学
微生物学微生物学
胃肠病学胃肠病学

背景情况:

3型先天性淋巴细胞 (ILC3) 产生IL-22,对肠道平衡至关重要.
ILC3的IL-22产生通常由IL-23从感知微生物产品的髓状细胞诱导.
由于隔离挑战,对IL-3的IL-3产生微生物代谢物的直接感知仍然不太了解.

研究的目的:

研究ILC3对微生物代谢物的直接反应.
阐明微生物成分影响IL-22在ILC3.22中的IL-22产生机制.

主要方法:

使用ILC3细胞系MNK-3进行体外实验.
使用qRT-PCR和ELISA评估IL-22的产生.
通过RNA-seq和免疫阻塞,分析了细胞对便超浮物 (FS) 和IL-23的反应.

主要成果:

便超水剂 (FS) 单独诱导了适度的IL-22产生,并与IL-23协同作用,从而产生强大的IL-22分泌.
FS的协同效应归因于细菌蛋白质,而不是其他微生物代谢产物.
与MNK-3细胞中的IL-23 (STAT3) 相比,FS激活了不同的信号通路 (p-38 MAPK).

结论:

来自微生物群的蛋白质直接刺激ILC3产生IL-22.
这种相互作用涉及与IL-23不同的信号通路.
表明基于微生物群的干预措施有可能安全调节IL-22的产生.

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