生物合成酶分析发现TLR4作用的肠道微生物硫脂在炎症性肠病中起着保护作用
Ethan A Older1, Jian Zhang2,3, Zachary E Ferris1
1Department of Chemistry and Biochemistry, University of South Carolina, Columbia, South Carolina, 29208, USA.
肠道微生物产生硫脂 (SoLs),在炎症性肠病 (IBD) 时减少. 这些SoL通过通过托尔类受体4 (TLR4) 信号来阻止炎症,从而保护IBD.
科学领域:
- 微生物学 微生物学
- 免疫学 免疫学 免疫学
- 代谢学 代谢学 代谢学
背景情况:
- 肠道微生物群在人类健康中起着至关重要的作用.
- 微生物代谢物是关键的分子机制,将肠道微生物与疾病联系起来.
- 硫脂 (SoLs) 是由肠道微生物产生的功能代谢物.
研究的目的:
- 开发一种新的方法,将微生物代谢物生物合成与疾病联系起来.
- 调查SoLs在炎症性肠病 (IBD) 中的作用.
主要方法:
- 生物合成酶引导的疾病相关性方法.
- 对患者数据的化学信息学和代谢学分析.
- 在IBD小鼠模型中的验证.
- 研究SoL与托尔类受体4 (TLR4) 信号的相互作用.
主要成果:
- SoL生物合成酶表达与IBD有负相关性.
- 在IBD患者和小鼠模型中,SoL的丰度显著下降.
- SoLs表现出免疫调节活性并抑制LPS诱导的炎症.
- 硫黄素A和B阻断了LPS与TLR4的结合,减少了炎症和M1巨分化.
结论:
- 通过TLR4信号传递,SoLs通过TLR4信号传递对IBD产生保护作用.
- 开发的方法有效地将微生物代谢物生物合成与人类健康联系起来.
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