Reaction-diffusion systems in intracellular molecular transport and control.

Reaction-diffusion systems in intracellular molecular transport and control.
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DOI:
10.1002/anie.200905513
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发表时间:
2010-06-07
影响因子:
16.6
通讯作者:
Grzybowski, Bartosz A.
Grzybowski, Bartosz A.
中科院分区:
化学1区
文献类型:
--
作者:
Soh, Siowling;Byrska, Marta;Kandere-Grzybowska, Kristiana;Grzybowski, Bartosz A.

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只有当参与化学反应的化学物质以及时和精确的方式被输送到所需的位置时,化学反应才能使细胞工作。虽然迄今为止的大多数研究都集中在所谓的主动传输机制上,但“被动”扩散往往同样迅速,而且总是能量消耗较少。利用这些优势,细胞已经开发出复杂的反应扩散(RD)系统,控制广泛的细胞功能-从趋化性和细胞分裂,通过信号级联和振荡,细胞运动。尽管它们有明显的多样性,但这些系统有许多共同的特征,并且根据涉及非线性动力学、自催化和反馈回路的“通用”图案进行“连接”。了解这些复杂的(生物)化学系统的操作需要相关的运输动力学方程的分析,或者至少在定性水平上,描述组成子过程的特征时间。因此,在回顾细胞RD的表现时,我们也试图让读者熟悉这些过程的基本理论。
Chemical reactions make cells work only if the participating chemicals are delivered to desired locations in a timely and precise fashion. While most research to date has focused on the so-called active-transport mechanisms, “passive” diffusion is often equally rapid and is always energetically less costly. Capitalizing on these advantages, cells have developed sophisticated reaction-diffusion (RD) systems that control a wide range of cellular functions – from chemotaxis and cell division, through signaling cascades and oscillations, to cell motility. Despite their apparent diversity, these systems share many common features and are “wired” according to “generic” motifs involving non-linear kinetics, autocatalysis, and feedback loops. Understanding the operation of these complex (bio)chemical systems requires the analysis of pertinent transport-kinetic equations or, at least on a qualitative level, of the characteristic times describing constituent sub-processes. Therefore, in reviewing the manifestations of cellular RD, we also attempt to familiarize the reader with the basic theory of these processes.
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