在健康人群中,胆酸代谢的初级-二级-三级轴
Bin Cheng1,2, YiXuan Wang1, YuTong Wang1
1Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry and Sichuan Province, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu 610041, China.
Journal of proteome research
|October 9, 2025
概括
这项研究量化了人类的胆汁酸 (BA) 代谢在初级,二级和三级轴,揭示了新的BA物种及其在宿主微生物相互作用和代谢健康中的作用.
科学领域:
- 代谢学 代谢学 代谢学
- 微生物组研究的研究.
- 免疫代谢过程中的免疫代谢.
背景情况:
- 胆酸 (BA) 代谢对于免疫代谢调节至关重要,涉及宿主肠道微生物相互作用.
- 现有的框架缺乏对人类BA的初级,二级和三级代谢轴的定量洞察力.
研究的目的:
- 建立人类BA动态的第一个定量框架.
- 在不同的生物矩阵 (血,尿液,便) 中对BA物种进行分析.
- 为了研究饮食对BA代谢的影响.
主要方法:
- 采用了43个BA标准的验证面板来进行全面的分析.
- 在成年人血,尿液和便以及新生儿尿液中分析了BA物种.
- 量化每日BA排泄率和评估饮食影响.
主要成果:
- 在成年人血,尿液和便中分别检测到19,28和39个BA.
- 确定了大量未报告的BA,包括便中的12epi-DCA和12epi-CA,以及尿液中的G12epi-DCA,GDCA-1β-ol,GDCA-5β-ol.
- 量化每日便 (407 ± 88.3 μmol) 和尿路 (1.41 ± 0.255 μmol) 的BA分泌量,便与尿液中具有明显的初级/二级/三级BA比例.
- 在高脂肪饮食中没有观察到便BA分泌的显著变化,但注意到食后尿路BA升.
结论:
- 通过初级,二级和三级轴,建立了人类BA代谢的基线指标.
- 显示了第三级BA在人类BA处置中的补充作用.
- 通过识别微生物12-epimerized BA代谢物,突出了BA媒介宿主-微生物交叉的复杂性.
- 解决了对BA相关代谢障碍的翻译研究至关重要的知识差距.
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