β-catenin驱动的内分体皮肤规范是双菌特有的新奇事项
Tatiana Lebedeva1,2,3, Johan Boström4, Stanislav Kremnyov3
1Department of Neurosciences and Developmental Biology, Faculty of Life Sciences, University of Vienna, Vienna, Austria.
Nature communications
|March 13, 2025
概括
在 cnidarians 中,β-catenin 信号模式在身体轴上,但抑制了内体皮质的形成,与 bilaterians 不同. 这一发现表明,与身体模式相关的内体皮肤特征是双方的创新.
科学领域:
- 发育生物学是发展生物学.
- 进化发育生物学 进化发育生物学
- 海洋生物学 海洋生物学
背景情况:
- 在许多动物中,Wnt/β-catenin信号传递对胚胎发育至关重要.
- 它在双胞胎的姐妹昆虫中扮演的角色是了解早期动物进化的关键.
- 之前的研究表明,在轴图案和内体皮的规范方面,它们的作用是保留的.
研究的目的:
- 调查β-catenin信号传递在类动物发育中的直接作用.
- 为了确定β-catenin是否模拟身体轴,并指定Nematostella vectensis中的内体.
- 将这些角色与双边发展中的角色进行比较.
主要方法:
- 在 cnidarian Nematostella vectensis. 中对β-catenin的内源标记.
- 在胚胎发育过程中对β-catenin局部化和活性进行分析.
- 调查β-catenin信号传递对内体皮质形成的影响.
主要成果:
- β-catenin信号梯度在尼马托斯泰拉的口腔 - 腹腔轴上形成了模式.
- 尼马托斯泰拉体内体内皮的特异性被β-catenin信号抑制.
- 内体皮在缺乏母核β-catenin的区域形成.
结论:
- 通过β-catenin保存的Cnidarian身体轴图案与双边人保持一致.
- 结核体内皮的特异性独立于贝塔-catenin 在 cnidarians 与双边的对比.
- 与后前模式相关的β-catenin依赖的内皮内皮特征似乎是一个双边的创新.
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