arXivDaily arXiv每日学术速递 周一至周五更新
北美退伍军人节(Veterans Day),12 日无更新
arXiv 2306.02100q-bio.PE
收藏

作为吸引子的微生物组丰度模式及其对微生物相互作用网络推断的启示

Microbiome abundance patterns as attractors and the implications for the inference of microbial interaction networks

Isabella-Hilda Mendler, Barbara Drossel, Marc-Thorsten Hütt

AI总结:

本文将微生物存在/缺失模式视为 Boolean 网络吸引子,结合 ESABO 与进化算法推断物种相互作用网络,并评估其准确性、运行时及信息不完整时的表现。

摘要:

从丰度模式推断微生物相互作用网络,是增进我们对一般微生物群落、尤其是人类微生物组理解的重要途径。在此,我们建议区分微生物丰度数据中包含的两个信息层次:(1)定量丰度值,以及(2)微生物有机体存在与缺失的模式。后者使我们能够以二元视角看待微生物组数据,并将微生物数据新颖地解释为 Boolean 网络的吸引子,或更准确地说,是其不动点。\n从这些吸引子出发,我们的目标是推断微生物组样本中存在的物种之间的相互作用网络。为完成这一任务,我们提出一种新的推断方法,将此前已发表的 ESABO(Entropy Shifts of Abundance vectors under Boolean Operations,Boolean 运算下丰度向量的熵移)方法与一种进化算法相结合。我们方法的关键思想是,所推断的网络应当将原始的(观测到的)二元丰度模式集合再现为吸引子。\n我们研究了这种进化方法的准确性和运行时特性,以及其在吸引子集合信息不完整情况下的行为。基于对该方法的这一理论理解,我们随后展示了其在经验数据上的应用。

英文摘要:

Inferring microbial interaction networks from abundance patterns is an important approach to advance our understanding of microbial communities in general and the human microbiome in particular. Here we suggest discriminating two levels of information contained in microbial abundance data: (1) the quantitative abundance values and (2) the pattern of presences and absences of microbial organisms. The latter allows for a binary view on microbiome data and a novel interpretation of microbial data as attractors, or more precisely as fixed points, of a Boolean network. Starting from these attractors, our aim is to infer an interaction network between the species present in the microbiome samples. To accomplish this task, we introduce a novel inference method that combines the previously published ESABO (Entropy Shifts of Abundance vectors under Boolean Operations) method with an evolutionary algorithm. The key idea of our approach is that the inferred network should reproduce the original set of (observed) binary abundance patterns as attractors. We study the accuracy and runtime properties of this evolutionary method, as well as its behavior under incomplete knowledge of the attractor sets. Based on this theoretical understanding of the method we then show an application to empirical data.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑