Cytoneme-mediated contact-dependent transport of the Drosophila decapentaplegic signaling protein.

Cytoneme-mediated contact-dependent transport of the Drosophila decapentaplegic signaling protein.
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DOI:
10.1126/science.1244624
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发表时间:
2014-02-21
期刊:
Science (New York, N.Y.)
影响因子:
--
通讯作者:
Kornberg TB
Kornberg TB
中科院分区:
其他
文献类型:
--
作者:
Roy S;Huang H;Liu S;Kornberg TB

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Decapentaplegic(Dpp)是果蝇形态发生蛋白的一种信号蛋白,它直接转移到产生Dpp的细胞和从受体细胞延伸的细胞丝之间接触部位形成的突触突上。细胞素接受的Dpp与激活的受体一起在运动点中向受体细胞体移动。通过减少其数量或仅减少其与其靶向细胞形成的突触,以及减少细胞丝介导的Dpp和Dpp信号转导的转运,来实现透明、shibire、神经胶质细胞和反复无常的扰动细胞丝的遗传性功能丧失状况。这些实验提供了直接的证据,表明细胞使用cytonemes交换信号蛋白,基于cytonemes的交换是必不可少的信号和正常的发展,形态分布和信号可以是接触依赖性的,需要cytonemes突触。
Decapentaplegic (Dpp), a Drosophila morphogen signaling protein, transfers directly at synapes made at sites of contact between cells that produce Dpp and cytonemes that extend from recipient cells. The Dpp that cytonemes receive moves together with activated receptors toward the recipient cell body in motile puncta. Genetic loss-of-function conditions for diaphanous, shibire, neuroglian and capricious perturbed cytonemes by reducing their number or only the synapses they make with cells they target; and reduced cytoneme-mediated transport of Dpp and Dpp signaling. These experiments provide direct evidence that cells use cytonemes to exchange signaling proteins, that cytoneme-based exchange is essential for signaling and normal development, and that morphogen distribution and signaling can be contact-dependent, requiring cytoneme synapses.
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