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在微生物群中基于活动的甘油循环追踪

Conor J Crawford¹, Greta Reintjes², Vipul Solanki^3,4

¹Max Planck Institute for Colloids and Interfaces, Potsdam 14476, Germany.

Journal of the American Chemical Society

|July 8, 2025

概括

我们开发了一种新型的光共振能量转移 (FRET) 探测器, 这种工具可以追踪多糖的降解,促进微生物组研究和了解全球碳循环.

科学领域:

微生物学
生物化学
环境科学

背景情况:

甘氨酸是微生物生态系统的关键组成部分,影响全球碳循环和人类健康.
目前用于追踪微生物糖的循环和识别活性降解剂的方法是有限的,特别是没有先前的基因组信息.

研究的目的:

开发和验证一种基于活动的光共振能量转移 (FRET) 探测器,用于复杂微生物群落中直接可视化和量化糖代谢.
为了证明探测器在跟踪α-曼南降解中的实用性,

主要方法:

使用自动化甘氨酸组装合成了用光素- 胺FRET对功能化的曼南六糖.
在细胞溶解物,纯种植物和复杂微生物组中使用重组内-α-曼酶 (GH76) 验证了FRET探针.
使用显微镜和板式测试可可视化和量化现场的糖循环.

主要成果:

FRET探测器成功实现了α-曼南降解的可视化和量化.
探测器展示了各种生物环境中的功能, 从纯化的酶到复杂的海洋微生物.
在海洋微生物群体中可视化了α-曼南周转的时空动态.

结论:

开发的甘FRET探针是研究甘代谢的多功能工具.
这些探测器有助于追踪多糖体的降解,从酶到整个微生物群.
这项技术为了解微生物在生物地化学循环和宿主微生物相互作用中的作用提供了新的可能性.

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