The adhesion force of Notch with Delta and the rate of Notch signaling.

The adhesion force of Notch with Delta and the rate of Notch signaling.
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DOI:
10.1083/jcb.200407100
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发表时间:
2004-12-20
期刊:
The Journal of cell biology
影响因子:
--
通讯作者:
Wesley C
Wesley C
中科院分区:
其他
文献类型:
--
作者:
Ahimou F;Mok LP;Bardot B;Wesley C

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Notch信号在动物发育过程中反复使用,以指定细胞命运。使用原子力显微镜对活细胞、化学抑制剂和常规分析,我们表明Notch信号传导的速率与表达Notch受体和Delta配体的细胞之间的粘附力有关。Notch细胞外和细胞内结构域都是与Delta的高粘附力所需的。这种高粘附力在几分钟内就消失了,主要是由于早老素对Notch的作用。减少营业额或三角洲拉加速这种损失。这些数据表明,Notch和Delta之间的强粘附可能作为以高速率启动Notch信号传导的助推器。
Notch signaling is repeatedly used during animal development to specify cell fates. Using atomic force microscopy on live cells, chemical inhibitors, and conventional analyses, we show that the rate of Notch signaling is linked to the adhesion force between cells expressing Notch receptors and Delta ligand. Both the Notch extracellular and intracellular domains are required for the high adhesion force with Delta. This high adhesion force is lost within minutes, primarily due to the action of Presenilin on Notch. Reduced turnover or Delta pulling accelerate this loss. These data suggest that strong adhesion between Notch and Delta might serve as a booster for initiating Notch signaling at a high rate.
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