AMBIENT: Active Modules for Bipartite Networks--using high-throughput transcriptomic data to dissect metabolic response.

AMBIENT: Active Modules for Bipartite Networks--using high-throughput transcriptomic data to dissect metabolic response.
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环境:两分网络的主动模块 - 使用高通量转录组数据解剖代谢反应。

DOI:
10.1186/1752-0509-7-26
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发表时间:
2013-03-25
影响因子:
--
通讯作者:
Pinney JW
Pinney JW
中科院分区:
生物2区
文献类型:
--
作者:
Bryant WA;Sternberg MJ;Pinney JW

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随着高通量生物实验的不断增多,迫切需要工具来整合产生的数据,从而得出具有生物学意义的结论。许多微阵列研究从通路角度分析了转录组数据,例如通过测试上调基因组中的 KEGG 通路富集度。然而,物种特异性代谢模型的不断增加提供了以更客观、全系统的方式分析这些数据的机会。在这里,我们介绍环境(二分网络的主动模块),这是一种模拟退火方法,用于发现受给定遗传或环境变化显着影响的代谢子网络(模块)。由环境返回的代谢模块是二分网络的连接部分,在条件之间连贯地变化,提供比基于途径富集的标准方法更详细的代谢变化视图。 ambient 是一种有效且灵活的工具,用于分析代谢环境中的高通量数据。相同的方法可以应用于任何可以根据某些生物学观察对反应(或代谢物)进行评分的系统,而不受预定义途径的限制。环境的 Python 实现可在 http://www.theosysbio.bio.ic.ac.uk/ambient 上找到。
With the continued proliferation of high-throughput biological experiments, there is a pressing need for tools to integrate the data produced in ways that produce biologically meaningful conclusions. Many microarray studies have analysed transcriptomic data from a pathway perspective, for instance by testing for KEGG pathway enrichment in sets of upregulated genes. However, the increasing availability of species-specific metabolic models provides the opportunity to analyse these data in a more objective, system-wide manner. Here we introduce ambient (Active Modules for Bipartite Networks), a simulated annealing approach to the discovery of metabolic subnetworks (modules) that are significantly affected by a given genetic or environmental change. The metabolic modules returned by ambient are connected parts of the bipartite network that change coherently between conditions, providing a more detailed view of metabolic changes than standard approaches based on pathway enrichment. ambient is an effective and flexible tool for the analysis of high-throughput data in a metabolic context. The same approach can be applied to any system in which reactions (or metabolites) can be assigned a score based on some biological observation, without the limitation of predefined pathways. A Python implementation of ambient is available at http://www.theosysbio.bio.ic.ac.uk/ambient.
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