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Theory of time-resolved somatic complementation and its use to explore the sporulation control network in Physarum polycephalum.

机译:时间分辨体细胞补充理论及其在探索explore头孢子形成控制网络中的应用。

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摘要

Mutants of Physarum polycephalum can be complemented by fusion of plasmodial cells followed by cytoplasmic mixing. Complementation between strains carrying different mutational defects in the sporulation control network may depend on the signaling state of the network components. We have previously suggested that time-resolved somatic complementation (TRSC) analysis with such mutants may be used to probe network architecture and dynamics. By computer simulation it is now shown how and under which conditions the regulatory hierarchy of genes can be determined experimentally. A kinetic model of the sporulation control network is developed, which is then used to demonstrate how the mechanisms of TRSC can be understood and simulated at the kinetic level. On the basis of theoretical considerations, experimental parameters that determine whether functional complementation of two mutations will occur are identified. It is also shown how gene dosage-effect relationships can be employed for network analysis. The theoretical framework provided may be used to systematically analyze network structure and dynamics through time-resolved somatic complementation studies. The conclusions drawn are of general relevance in that they do not depend on the validity of the model from which they were derived.
机译:多头Phys麦草的突变体可以通过融合浆体细胞,然后进行细胞质混合来补充。孢子控制网络中携带不同突变缺陷的菌株之间的互补性可能取决于网络组件的信号状态。我们以前曾建议,具有此类突变体的时间分辨体细胞互补(TRSC)分析可用于探测网络架构和动力学。通过计算机仿真,现在表明了如何以及在何种条件下可以通过实验确定基因的调节等级。建立了孢子形成控制网络的动力学模型,然后将其用于演示如何在动力学水平上理解和模拟TRSC的机理。基于理论上的考虑,确定确定是否会发生两个突变的功能互补的实验参数。还显示了如何将基因剂量效应关系用于网络分析。提供的理论框架可用于通过时间分辨的体细胞补充研究系统地分析网络结构和动力学。得出的结论具有普遍意义,因为它们不依赖于其得出的模型的有效性。

著录项

  • 期刊名称 Genetics
  • 作者

    Wolfgang Marwan;

  • 作者单位
  • 年(卷),期 2003(164),1
  • 年度 2003
  • 页码 105–115
  • 总页数 12
  • 原文格式 PDF
  • 正文语种
  • 中图分类 遗传学;
  • 关键词

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