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一个延伸BMP形态原的有用范围的遗传电路与昆虫翅膀进化一起出现

Anqi Huang¹, Luca Cocconi², Ben Nicholls-Mindlin¹

¹Francis Crick Institute, London NW1 1AT, UK.

Current biology : CB

|November 18, 2025

概括

一个涉及Brinker (Brk) 的新型调节电路通过放大Decapentaplegic (Dpp) 信号来增强Drosophila翅膀发育中的位置信息. 这种机制提高了发育的精度,并允许更大的形态复杂性.

科学领域:

发展生物学发展生物学
分子生物学分子生物学
进化生物学进化生物学

背景情况:

形态基因梯度对于发育至关重要,但受到内在噪声的限制.
骨形态遗传蛋白质 (BMP) 的脱 (Dpp) 组织了Drosophila翅膀的前后轴.
形态原梯度的有效范围受到信号噪声的限制.

研究的目的:

确定克服在形态渐变信号传输中的噪声限制的监管机制.
了解Brinker (Brk) 如何为DPP信号的位置精度做出贡献.
调查Brk在昆虫发育中的进化起源和功能.

主要方法:

识别了一种涉及布林克 (Brk) 和爸爸的新型调节电路.
分析DPP信号通路组件及其相互作用.
昆虫的遗传学和表达分析,包括Thermobia domestica.

主要成果:

布林克 (Brk) 通过抑制抑制性Smad,Dad来提高位置精度,从而扩大DPP的有效范围.
Brk介导一个反电路,可以放大低级 Dpp 信号并实现时间整合.
遗传学数据表明,Brk起源于昆虫,并被纳入了虫的BMP网络.

结论:

Brk介导的反电路通过提高形态基因梯度可靠性来提高发育精度.
基因调节网络的进化,如Brk电路,可以驱动形态复杂性.
Brk在BMP信号传递中的作用可能对昆虫翅膀发育中的远程信号传递的演变至关重要.

关键词:

在 BMP 信号传输中.这是一个反回路回路.基因监管网络的演变基因监管网络的演变昆虫的翅膀是昆虫的翅膀.形态原体是一种形态原体.形态基因解码解码位置信息是指位置信息.

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