| Extraction of Small Molecules from Fecal Samples and Testing of Their Activity on Microbial Physiology
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Author:
Date:
2018-04-20
[Abstract] The human body is colonized by vast communities of microbes, collectively known as microbiota, or microbiome. Although microbes colonize every surface of our bodies that is exposed to the external environment, the biggest collection of microbes colonizing humans and other mammals can be found in the gastrointestinal tract. Given the fact that the human gut is colonized by several hundred microbial species, our group hypothesized that the chemical diversity of this environment should be significant, and that many of the molecules present in that environment would have important signaling roles. Therefore, we devised a protocol to extract these molecules from human feces and test their signaling properties. Potentially bioactive extracts can be tested through addition to culture medium and ...
[摘要] 人体被巨大的微生物群体统称为微生物群体或微生物群体。尽管微生物在我们身体的每一个暴露于外部环境的表面上定殖，但人类和其他哺乳动物中最大量的微生物可以在胃肠道中找到。鉴于人类肠道已被数百种微生物物种繁殖，我们的团队假设这种环境的化学多样性应该是显着的，并且该环境中存在的许多分子将具有重要的信号传导作用。因此，我们制定了一个协议，从人类粪便中提取这些分子并测试其信号特性。可以通过添加培养基并分析细菌生长和基因表达以及其他性质来测试潜在的生物活性提取物。本文描述的方案提供了一种简便且快速的方法，用于使用肠道沙门氏菌作为模型生物体从粪便样品中提取和测试代谢物。该方案还可以适用于从其他基质如培养的哺乳动物细胞，组织，体液和无菌微生物培养物中提取小分子，并且可以针对各种微生物物种测试所得提取物。
【背景】复杂的微生物群落生活在人类和人类身上，将暴露于外部环境的每个表面都定殖。几十年来，这些社区已经获得了几个教派，其中包括正常的植物群，微生物群和最近的微生物群（Sekirov等人，2010年; ...
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| Drosophila Fecal Sampling
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Author:
Date:
2017-09-20
[Abstract] Fecal sampling is a non-invasive method which raises the possibility to study the development and the changes in the microbial community throughout different time points of a fly population or throughout different treatments. This method allows precise manipulation to trigger the fly’s physiology by nutritional interventions, bacterial infections or other stressors.
As in most other animals, the intestinal microbiota is essential for a healthy fly-life. Because Drosophila only harbors a relative simple bacterial community with a small variety of round about 8 to 10 different species, it is rather easy to build up the microbial community and to investigate microbial changes after treatment.
Another positive effect using the fly’s feces is that bacteria that ...
[摘要] 粪便取样是一种非侵入性方法，提高了在飞行群体的不同时间点或整个不同处理过程中研究微生物群落的发展和变化的可能性。这种方法允许精确的操纵通过营养干预，细菌感染或其他压力源触发苍蝇的生理学。
与大多数其他动物一样，肠道微生物群对健康的飞行生命至关重要。因为果蝇只拥有一个相对简单的细菌群落，有大约8到10个不同种类的小种，很容易建立微生物群落，并在处理后调查微生物的变化。
使用蝇的粪便的另一个积极作用是不是肠微生物群的一部分的细菌，例如Wolbachia，可以直接从分析中排除，因为它们不会排泄。
使用这种方法，生成的数据集可能反映了在简单飞行模型中研究微生物组织相关疾病的一个很好的范例，此外，可以以高通量方法测试药物。
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