范科米辛通过消除肠道细菌β-glucuronidase酶活性来缓解塔克罗利斯诱导的高血糖症
Peixia Li1, Rui Zhang1, Jinping Zhou1
1Department of Pharmacy, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.
Gut microbes
|February 9, 2024
概括
塔克罗利 (TAC) 可以在移植后引起糖尿病. 用万科米辛抑制细菌β-葡萄糖酶 (GUS) 通过恢复胆酸代谢和GLP-1分泌来预防TAC诱导的高血糖症.
科学领域:
- 微生物学 微生物学
- 内分泌学 在内分泌学.
- 胃肠病学 胃肠病学
背景情况:
- 长期的塔克罗利斯 (TAC) 治疗对移植接受者至关重要,但与移植后糖尿病 (PTDM) 有关.
- TAC改变了肠道微生物群,但将TAC诱导的微生物群变化与PTDM病原性联系起来的具体机制尚不清楚.
- 肠道中的细菌β-葡萄糖酶 (GUS) 活性与代谢障碍有关.
研究的目的:
- 研究细菌GUS在TAC诱导的高血糖和胰岛素耐药性中的作用.
- 探索GUS抑制的潜力,作为一种预防TAC治疗患者PTDM的策略.
- 阐明涉及胆酸和GLP-1的潜在分子通路.
主要方法:
- 利用TAC诱导的高血糖症的小鼠模型.
- 用GUS抑制剂万科米,以评估其对葡萄糖代谢和胰岛素耐药性的影响.
- 采用元基因组学和向代谢学来分析肠道微生物群组成,GUS活性和胆酸概况.
- 研究了对以利亚法尔内索伊德X受体 (FXR) 信号传递和L细胞GLP-1分泌物的影响.
主要成果:
- 在小鼠中,万科米辛治疗预防了TAC诱导的葡萄糖不耐受和胰岛素耐药性.
- 在TAC模型中,转基因组学揭示了产生GUS的细菌的优势,以及肠道GUS活动的增加.
- 高GUS活性导致胆酸 (BA) 水解增加,BA过量产生,FXR激活,并抑制GLP-1分泌.
- 范科米辛减少了产生GUS的细菌,抑制了GUS活性和BA水平,增强了GLP-1分泌,并预防了高血糖症.
结论:
- 细菌GUS通过胆酸-FXR-GLP-1通路在TAC诱导的高血糖症中发挥着关键作用.
- 抑制细菌GUS活动是一种有前途的治疗策略,可以预防TAC移植受体的高血糖症.
- 这种方法提供了一种管理PTDM的方法,而不会影响TAC的基本免疫抑制.
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