类固醇激素诱导的无翼配体调整了Drosophila中的女性肠道大小
Lisa Zipper1, Bernat Corominas-Murtra2, Tobias Reiff3
1Department of Biology, Institute of Genetics, The Faculty of Mathematics and Natural Sciences, Heinrich Heine University Düsseldorf, Düsseldorf, Germany.
Nature communications
|January 6, 2025
概括
女性生殖通过激素Ecdysone触发肠道生长,激活肠道干细胞 (ISC) 分裂. 转录因子曲腿 (crol) 协调这个过程,影响ISC线粒分裂和肠道大小调节.
科学领域:
- 发展生物学 发展生物学
- 细胞生物学 细胞生物学
- 内分泌学 在内分泌学.
背景情况:
- 雌性生殖需要大量的能量,需要像增加肠道大小这样的适应.
- 交配会诱导内分泌信号,促进吸收性肠表皮增加30%.
- 在交配后释放的类固醇激素Ecdysone刺激肠道干细胞 (ISC) 分裂.
研究的目的:
- 为了确定协调Ecdysone诱导的ISC线粒分裂的内皮层因素.
- 开发一种用于精确的系统,对ISC行为进行膜基因操纵的时空空间分析.
- 为了研究曲腿 (crol) 在调节ISC增殖和肠道适应中的作用.
主要方法:
- 开发Rapport系统,用于双重表达和追踪膜因子.
- 使用Rapport系统分析Ecdysone诱导的ISC行为和基因表达.
- 数学建模以了解肠细胞增殖和肠道大小调节的动态.
主要成果:
- 曲腿 (crol) 作为Ecdysone诱导的ISC线粒分裂的内皮协调器.
- 埃克迪松诱导的Crol控制了肠细胞中的Wnt/Wg联体表达,刺激了ISC线粒分裂.
- 克罗尔通过串/CDC25和CyclinB自主抑制ISC的增殖,平衡膜Wnt/Wg刺激.
- 基于报告的ISC瘤证实了Ecdysone-Crol-Wg轴在线粒行为中的作用.
- 在ISC中,Crol的抗增殖作用在结直肠癌模型中保持不变.
结论:
- 埃克迪松-克罗尔-Wg轴对于调节交配诱导的肠道生长至关重要.
- 克罗尔表现出双重作用:促进通过膜Wnt/Wg的增殖,并在ISC中自主抑制它.
- 数学建模通过肠细胞数量调节和Wnt/Wg降解,支持结交后稳定的肠体大小.
- 这些发现提供了对生殖相关适应和胃肠道瘤发生的内分泌控制的见解.
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