Eukaryotic chemotaxis: a network of signaling pathways controls motility, directional sensing, and polarity.

Eukaryotic chemotaxis: a network of signaling pathways controls motility, directional sensing, and polarity.
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DOI:
10.1146/annurev.biophys.093008.131228
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发表时间:
2010
影响因子:
12.4
通讯作者:
Devreotes PN
Devreotes PN
中科院分区:
生物学1区
文献类型:
--
作者:
Swaney KF;Huang CH;Devreotes PN

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趋化性,即细胞在化学梯度中定向迁移,是正常生理学和许多疾病发病机制中的重要过程。趋化细胞显示运动性、方向感测和极性。运动性是指伪足的随机延伸,这可能是由通过细胞骨架传播的自发肌动蛋白波驱动的。方向感测是由一个系统,检测时间和空间的刺激和偏见的梯度运动。极性通过将蛋白质或其活性选择性地重新定位到两极,使细胞在形态和功能上具有明显的前沿和后沿。通过利用Dictyosteoblasts的遗传优势,研究人员正在研究涉及运动,方向感测和极性的趋化过程的蛋白质之间的复杂相互作用网络。
Chemotaxis, the directed migration of cells in chemical gradients, is a vital process in normal physiology and in the pathogenesis of many diseases. Chemotactic cells display motility, directional sensing, and polarity. Motility refers to the random extension of pseudopodia, which may be driven by spontaneous actin waves that propagate through the cytoskeleton. Directional sensing is mediated by a system that detects temporal and spatial stimuli and biases motility toward the gradient. Polarity gives cells morphologically and functionally distinct leading and lagging edges by relocating proteins or their activities selectively to the poles. By exploiting the genetic advantages of Dictyostelium, investigators are working out the complex network of interactions between the proteins that have been implicated in the chemotactic processes of motility, directional sensing, and polarity.
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期刊: EMBO JOURNAL
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