主题模型用于人类肠道微生物组的多组合集成,以及对自闭症的影响
Christine Tataru1, Marie Peras2, Erica Rutherford2
1Department of Microbiology, Oregon State University, SW Campus Way, Corvallis, USA. tataruc@oregonstate.edu.
Scientific reports
|July 13, 2023
概括
这项研究使用多原子分析和自然语言处理来了解自闭症儿童的肠道微生物群差异. 研究人员确定了与特定代谢物相关的饮食相关的微生物过程.
科学领域:
- 微生物组研究的研究.
- 计算生物学是一种计算生物学.
- 神经科学是一个神经科学.
背景情况:
- 健康的肠道微生物对人类健康至关重要,但由于分析技术的局限性,微生物过程往往不太了解.
- 多原子分析提供了一种方法来定义可概括的微生物过程,特别是对于像自闭症这样的复杂疾病.
- 整合来自多种分析方法的异质数据存在挑战,但隐性迪里克莱特分配 (LDA) 可以克服这些挑战.
研究的目的:
- 将隐性迪里克莱特分配 (LDA) 应用于自闭症和没有自闭症儿童的多原子微生物数据.
- 为了确定微生物过程 (主题) 和相关的代谢物,这些组之间有所不同.
- 在不同的分析方法中定义可概括的微生物过程.
主要方法:
- 应用隐性迪里克莱特分配 (LDA) 对81名儿童的多原子微生物数据 (16S rRNA amplicon,shotgun metagenomic,shotgun metatranscriptomic和非目标代谢概况) 进行了研究.
- 确定了代表微生物过程的主题,并按主题分布分组样本.
- 分析了自闭症和没有自闭症儿童之间的代谢物,特别是神经递质前体和脂肪酸衍生物的差异.
主要成果:
- 在肠道微生物组中识别了与饮食相关的微生物过程 (主题).
- 在患有自闭症和没有自闭症的儿童之间发现了特定代谢物 (神经递质前体,脂肪酸衍生物) 的显著差异.
- 确定了代表可普遍化微生物过程的"跨体主题",可在不同的分析方法中观察到.
结论:
- 隐性迪里克莱特分配 (LDA) 是有效的整合多组微生物数据,以识别与饮食相关的微生物过程.
- 肠道微生物群中的特定微生物过程和代谢物与儿童自闭症有关.
- 该研究提供了一个框架,用于理解使用计算方法在自闭症中复杂的宿主微生物群相互作用.
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