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来自微生物组的细菌脂质调节了系统单细胞中促炎途径抑制剂的基因表达

Saki Mihori¹, Frank Nichols², Anthony Provatas³

¹Department of Immunology, UConn Health, Farmington, CT, United States.

Frontiers in immunology

|July 11, 2024

概括

微生物组衍生的血清甘氨酸 (S/G) 脂质调节系统性天生的免疫力. 这些由Bacteroidota产生的脂质通过调节TLR和NF-κB通路来控制单细胞炎症反应,影响像阿尔茨海默氏症这样的疾病.

科学领域:

免疫学免疫学免疫学
微生物组研究的研究.
分子生物学分子生物学

背景情况:

肠道微生物组与全身免疫系统之间的相互作用是复杂的,并未完全理解.
微生物代谢产物越来越多地被认为是它们在调节宿主免疫力中的作用.

研究的目的:

确定和描述一种新的机制,通过该机制,微生物群影响系统性先天免疫细胞反应.
研究特定微生物脂在调节单细胞功能中的作用.

主要方法:

用抗生素进行口服测量,以减少微生物脂的产量.
纯化血清甘氨酸 (S/G) 脂质的外部使用.
脊髓单细胞的转录组分析.
流细胞计测试以评估免疫细胞的反应.

主要成果:

微生物组衍生的S / G脂质水平的降低增强了脏单细胞的炎症反应.
外源的S/G脂质的施用恢复了单细胞反应到基线水平.
发现S/G脂质可以调节关键炎症途径抑制剂的基因表达,包括Trem2和Irf4.

结论:

来自微生物组的S/G脂质对于维持系统单细胞中平衡和调节的先天免疫反应至关重要.
S/G脂质水平的调节失调可能会导致免疫功能障碍,需要进一步研究像阿尔茨海默氏症这样的神经退行性疾病.

关键词:

这是一个TLR.细菌脂质是一种细菌脂质.基因表达的基因表达方式抑制剂抑制剂抑制剂这是先天免疫力.微生物组是一个微生物组.亲炎性通路的发生.

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