Fold formation at the compartment boundary of Drosophila wing requires Yki signaling to suppress JNK dependent apoptosis.

Fold formation at the compartment boundary of Drosophila wing requires Yki signaling to suppress JNK dependent apoptosis.
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果蝇翅膀区室边界的折叠形成需要 Yki 信号传导来抑制 JNK 依赖性细胞凋亡

DOI:
10.1038/srep38003
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发表时间:
2016-11-29
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:
Liu S;Sun J;Wang D;Pflugfelder GO;Shen J

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隔室的边界防止不同血统的细胞群体混合。在许多情况下,隔室边界与形态褶皱有关。然而,在果蝇的想象盘中,在前/后(A/P)室边界处的褶皱形成被抑制,这可能是形成平坦的翼面的先决条件。折叠抑制依赖于视运动盲(OMB)。OMB突变动物在幼虫翼盘的A/P交界处形成深尖皱折,在成虫翅膀上形成A/P裂隙。A/P折叠的形成受不同的信号通路控制。Jun氨基末端激酶(JNK)和约克(Yki)信号在折叠沿线的细胞中被激活,是A/P折叠发育所必需的。当JNK促进细胞形状改变和细胞死亡时,需要yki靶基因来拮抗细胞凋亡,这解释了为什么这两个途径都需要激活才能形成稳定的折叠。
Compartment boundaries prevent cell populations of different lineage from intermingling. In many cases, compartment boundaries are associated with morphological folds. However, in the Drosophila wing imaginal disc, fold formation at the anterior/posterior (A/P) compartment boundary is suppressed, probably as a prerequisite for the formation of a flat wing surface. Fold suppression depends on optomotor-blind (omb). Omb mutant animals develop a deep apical fold at the A/P boundary of the larval wing disc and an A/P cleft in the adult wing. A/P fold formation is controlled by different signaling pathways. Jun N-terminal kinase (JNK) and Yorkie (Yki) signaling are activated in cells along the fold and are necessary for the A/P fold to develop. While JNK promotes cell shape changes and cell death, Yki target genes are required to antagonize apoptosis, explaining why both pathways need to be active for the formation of a stable fold.
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