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arXiv 1001.4972q-bio.MN
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高阶布尔网络作为细胞状态动力学模型

Higher Order Boolean networks as models of cell state dynamics

Elke K. Markert, Nils Baas, Arnold J. Levine, Alexei Vazquez

摘要:

细胞状态的调节是一个复杂的过程,涉及几个组件。这些复杂的动力学可以使用布尔网络建模,使我们能够解释不同细胞状态的存在以及它们之间的过渡。布尔模型已经被引入作为具体的例子和作为集合或分布网络模型。然而,目前的集成布尔网络模型没有对不同的细胞成分如表观遗传因子、基因和转录因子进行系统的区分。因此,我们仍然不了解它们在控制细胞命运中的相对作用。在这项工作中,我们介绍和研究高阶布尔网络,其特点是明确区分不同的细胞成分和它们之间的相互作用的类型。我们表明,细胞状态动力学的稳定性可以确定解决矩阵的特征值问题,代表监管的相互作用和他们的实力。对这个问题的定性分析表明,除了稳定和混沌状态的分类,细胞状态可以是简单的或复杂的,这取决于它是否可以从其组件的独立研究或没有推导出来。最后,我们说明了如何考虑更高层次和更高阶的动态模型可以扩展。

英文摘要:

The regulation of the cell state is a complex process involving several components. These complex dynamics can be modeled using Boolean networks, allowing us to explain the existence of different cell states and the transition between them. Boolean models have been introduced both as specific examples and as ensemble or distribution network models. However, current ensemble Boolean network models do not make a systematic distinction between different cell components such as epigenetic factors, gene and transcription factors. Consequently, we still do not understand their relative contributions in controlling the cell fate. In this work we introduce and study higher order Boolean networks, which feature an explicit distinction between the different cell components and the types of interactions between them. We show that the stability of the cell state dynamics can be determined solving the eigenvalue problem of a matrix representing the regulatory interactions and their strengths. The qualitative analysis of this problem indicates that, in addition to the classification into stable and chaotic regimes, the cell state can be simple or complex depending on whether it can be deduced from the independent study of its components or not. Finally, we illustrate how the model can be expanded considering higher levels and higher order dynamics.

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。

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