来自细菌的非正规聚胺对抗动物线粒体功能
Kelsie M Nauta1, Darrick R Gates1, Matthew Weiland1
1Van Andel Research Institute, Department of Metabolism and Nutritional Programing, Grand Rapids, MI, 49503, USA.
bioRxiv : the preprint server for biology
|May 15, 2024
概括
肠道细菌可以产生一种新型化合物N1-Aminopropylagmatine (N1-APA),它会破坏动物的发育和线粒体功能. 这一发现为炎症性肠病 (IBD) 和它们与肠道微生物的联系提供了新的见解.
科学领域:
- 微生物学 微生物学
- 生物化学 生物化学
- 动物生理学 动物生理学
背景情况:
- 来自肠道细菌的多氨酸与人类肠道细胞相互作用,可能影响腹 (IBS-D) 和炎症性肠病 (IBD) 的刺激性肠综合征.
- 这些相互作用背后的分子机制往往不清楚,因为在研究体内聚胺功能的局限性.
研究的目的:
- 开发新的方法来研究细菌中的聚胺代谢及其对动物系统的影响.
- 确定肠道细菌产生的新生物活性聚胺代谢物,阐明它们的作用机制.
主要方法:
- 开发一个基于Caenorhabditis elegans的查平台.
- 应用一种修改后的液体染色学-质谱学 (LC-MS) 方法来分析聚胺代谢物.
- 用动物模型进行体内研究,以评估已识别的代谢物的生物活性.
主要成果:
- 发现N1-Aminopropylagmatine (N1-APA),一种非正规的聚胺中间体,由于功能障碍的细菌聚胺代谢 (在大肠杆菌和B. subtilis中) 而积累.
- N1-APA是通过精激素合成酶 (SpeE) 生产的,并且具有生物活性,对抗动物发育和线粒体功能.
- 通过CATP-5将N1-APA输送到肠道细胞中,其功能与脱氧基素合成酶抑制剂GC7类似,抑制eIF5A的低化和巨细胞激活.
结论:
- N1-APA是第一个被识别的由细菌产生的生物活性代谢物,它模仿了脱氧基氨酸合成酶抑制剂的功能.
- 这一发现为肠道微生物中speB的损失与炎症性肠病 (IBD) 的发展提供了潜在的机制联系.
- 这项研究强调了细菌聚胺代谢在宿主微生物相互作用和疾病发病过程中的重要性.
关键词:
这种细菌是 Bacillus subtilis.C. 优雅的 优雅的这是一种N1-Aminopropylagmatine.在CATP-5中.daf-2 daf-2 daf-2 daf-2 daf-2 daf-2 daf-2 daf-2 daf-2 daf-2 daf-2 daf-2在HSP-6中使用.胰岛素的胰岛素胰岛素是什么微生物组是一个微生物组.线粒体中的线粒体.聚氨酸是多氨基的speBB speBB speBB speBB speBB speBB speBB speBB speBB speBB speBB speBB speBB speB speB speB speB speB speB speB speB speB speB speB speB speB speB speB speB speB speB speB speB speB speB speB speB speB speB speB speB speB speB speB speB speB speB speB speB speB speB speB speB speB speB speB speB speB speB speB speB speB
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