化学蛋白质组学揭示了微生物群衍生的GPRC5A的芳香性单胺激素激应剂
Xiaohui Zhao1, Kathryn R Stein1, Victor Chen2
1Department of Immunology and Microbiology, Scripps Research, La Jolla, CA, USA.
Nature chemical biology
|May 29, 2023
概括
研究人员确定了肠道微生物如何产生与宿主蛋白相互作用的内醇代谢物. 他们发现芳香单胺激活GPRC5A受体,为新的治疗策略铺平了道路.
科学领域:
- 微生物组研究的研究.
- 化学生物学是化学生物学.
- 药理学 药理学是指药理学的学科.
背景情况:
- 肠道微生物群产生代谢物,影响宿主健康和疾病.
- 了解这些微生物代谢物的蛋白质标和机制至关重要,但不完整.
- 印醇代谢物是微生物化合物的关键类别,具有重要的生理作用.
研究的目的:
- 为了识别微生物群衍生的醇代谢物的蛋白质标.
- 阐明这些代谢物与宿主蛋白相互作用的机制.
- 为孤儿受体开发新的小分子激动剂.
主要方法:
- 使用光亲和化学记者进行蛋白质组学研究.
- 进行了微生物物种的代谢和功能分析.
- 合成和分析的芳香单胺的衍生物.
主要成果:
- 鉴定出了众多的内醇代谢物相互作用蛋白质,包括代谢酶,转运器,免疫传感器和G蛋白结合受体 (GPCR).
- 发现芳香单胺与孤儿受体GPRC5A结合,刺激β-arrestin的招募.
- 关联特定的氨基酸脱碳酶表达肠道细菌与GPRC5A的芳香单氨基胺激活剂的产生.
- 鉴定出7-托里胺作为一种强大的GPRC5A激动剂.
结论:
- 化学蛋白质组学对于识别宿主-微生物群代谢物相互作用是有效的.
- 由肠道细菌产生的芳香单胺可以通过GPRC5A信号调节宿主生理.
- 这些发现使小分子激动剂的开发成为可能,以治疗目的准像GPRC5A这样的孤儿受体.
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