Hedgehog signalling is required for cell survival in Drosophila wing pouch cells.

Hedgehog signalling is required for cell survival in Drosophila wing pouch cells.
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Hedgehog 信号传导是果蝇翼袋细胞存活所必需的

DOI:
10.1038/s41598-017-10550-4
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发表时间:
2017-09-12
期刊:
影响因子:
4.6
通讯作者:
Shen J
Shen J
中科院分区:
综合性期刊3区
文献类型:
--
作者:
Lu J;Wang D;Shen J

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细胞存活和细胞死亡之间的适当平衡对于动物组织和器官中正确模式的形成至关重要。先前的研究表明,短程信号分子 Hedgehog (Hh) 是果蝇中央翼盘细胞增殖和模式形成所必需的。 Hh 靶标之一——形态发生素十触瘫 (Dpp) 的信号转导不仅是细胞增殖所必需的,也是袋细胞中细胞存活所必需的。然而,Hh 在细胞存活和细胞死亡中的功能尚未被揭示。在这里,我们发现 Hh 信号活性的丧失会导致翼袋细胞中大量的 Caspase 依赖性细胞死亡,并且该过程独立于 Dpp 信号传导和 Jun-N 末端激酶 (JNK) 信号传导。 Hh 的缺失诱导促凋亡基因 hid 的激活和 diap1 的抑制。因此,我们确定了 Hh 信号在果蝇翅膀发育过程中细胞存活中的重要作用。
An appropriate balance between cell survival and cell death is essential for correct pattern formation in the animal tissues and organs. Previous studies have shown that the short-range signalling molecule Hedgehog (Hh) is required for cell proliferation and pattern formation in the Drosophila central wing discs. Signal transduction by one of the Hh targets, the morphogen Decapentaplegic (Dpp), is required for not only cell proliferation, but also cell survival in the pouch cells. However, Hh function in cell survival and cell death has not been revealed. Here, we found that loss of Hh signal activity induces considerable Caspase-dependent cell death in the wing pouch cells, and this process was independent of both Dpp signalling and Jun-N-terminal kinase (JNK) signalling. Loss of Hh induced activation of the pro-apoptotic gene hid and inhibition of diap1. Therefore, we identified an important role of Hh signalling in cell survival during Drosophila wing development.
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