Phase transitions and size scaling of membrane-less organelles.

Phase transitions and size scaling of membrane-less organelles.
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DOI:
10.1083/jcb.201308087
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发表时间:
2013-12-23
期刊:
The Journal of cell biology
影响因子:
--
通讯作者:
Brangwynne CP
Brangwynne CP
中科院分区:
其他
文献类型:
--
作者:
Brangwynne CP

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细胞及其细胞器的协调生长是一个基本的和知之甚少的问题,从胚胎发育到肿瘤发生的过程的影响。最近的实验揭示了无膜细胞质和核质结构,包括核糖核蛋白(RNP)颗粒和其他细胞内机构的细胞大小依赖性组件。这些结构中的许多表现为细胞质/核质的浓缩液体样相。相变,似乎支配他们的组装表现出内在的细胞大小的依赖性,并可以解释报告的一些结构的尺寸缩放。这种尺寸缩放反过来可以在细胞生长和尺寸控制中发挥作用。
The coordinated growth of cells and their organelles is a fundamental and poorly understood problem, with implications for processes ranging from embryonic development to oncogenesis. Recent experiments have shed light on the cell size–dependent assembly of membrane-less cytoplasmic and nucleoplasmic structures, including ribonucleoprotein (RNP) granules and other intracellular bodies. Many of these structures behave as condensed liquid-like phases of the cytoplasm/nucleoplasm. The phase transitions that appear to govern their assembly exhibit an intrinsic dependence on cell size, and may explain the size scaling reported for a number of structures. This size scaling could, in turn, play a role in cell growth and size control.
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