在S-Adenosylmethionine (SAM) 饮食中,通过基因素H3K4me3复合体促进先天免疫力
Yi Xiao1, Chao Han1, Xiaocong Li1
1Guizhou Provincial College-based Key Lab for Tumor Prevention and Treatment with Distinctive Medicines, Zunyi Medical University, Zunyi, Guizhou 563000, China; College of Basic Medicine, Zunyi Medical University, Zunyi, Guizhou 563000, China; Institute of Life Sciences, Zunyi Medical University, Zunyi, Guizhou 563000, China.
International immunopharmacology
|March 12, 2024
概括
一种S-adenosylmethionine (SAM) 饮食通过增强生殖线中的组素甲基化来增强先天免疫力,增加了C. elegans和小鼠对Pseudomonas aeruginosa感染的抵抗力.
科学领域:
- 免疫学 免疫学 免疫学
- 分子生物学分子生物学
- 遗传学 是一个遗传学.
背景情况:
- S-adenosylmethionine (SAM) 作为基因组修饰的甲基捐赠体,影响免疫反应等过程.
- 精确的分子机制,SAM影响免疫系统通过基因素修饰并没有完全理解.
研究的目的:
- 为了研究SAM饮食在天生的免疫力中的作用,使用Caenorhabditis elegans作为模型生物体.
- 阐明连接SAM的分子途径,基质子修饰和免疫反应.
主要方法:
- 利用Caenorhabditis elegans来研究SAM饮食对抗Pseudomonas aeruginosa PA14的天生的免疫力的影响.
- 在C. elegans中进行基因查,以确定参与SAM介导免疫增强的基因和途径.
- 在P. aeruginosa PA14感染的小鼠模型中测试了SAM的保护作用.
主要成果:
- 一种50μM的SAM饮食通过减少肠道细菌负担,显著增加了C. elegans中对P. aeruginosa PA14的耐药性.
- 基因查显示,SAM通过H3K4甲基转移酶复合体增强生殖系内天生的免疫力,从而调节免疫反应基因 (例如,irg-1,T24B8.5).
- 此外,SAM的使用还降低了感染P. aeruginosa PA14的小鼠肺中的细菌负担.
结论:
- 饮食中的SAM通过生殖系介导的基因组蛋白修饰来增强先天免疫力和病原体抵抗力.
- 这些发现突出了SAM,基因素甲基化和免疫系统之间的新型分子联系,具有潜在的翻译影响.
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