相关实验视频

Updated: Mar 18, 2026

Generation of Maternal Mutants Using zpc:cas9 Knock-in Zebrafish

Generation of Maternal Mutants Using zpc:cas9 Knock-in Zebrafish

Published on: July 22, 2025

BMP-Smad1/9信号在调节斑马鱼PGC扩散方面发挥着至关重要的作用

Tao Zheng^1,2, Yaqi Li^1,2, Guangyuan Li^1,2

¹Laboratory of Molecular Developmental Biology, State Key Laboratory of Membrane Biology, School of Life Sciences, Tsinghua University, Beijing, China.

Nature communications

|March 17, 2026

概括

骨形态遗传蛋白 (BMP) 信号传递对于维持斑马鱼原始生殖细胞 (PGC) 至关重要,而不是决定它们的命运. 破坏BMP-Smad1/9通路会损害PGC的增殖和生存,突出了脊椎动物PGC发育中的保留作用.

科学领域:

发展生物学发展生物学
细胞生物学细胞生物学
遗传学是一个遗传学.

背景情况:

生殖细胞命运的决定在斑马鱼 (生殖细胞) 和哺乳动物 (BMP信号) 之间有所不同.
斑马鱼原始生殖细胞 (PGC) 发育中的BMP信号的作用以前尚不清楚.

研究的目的:

调查BMP-Smad1/9信号在斑马鱼PGC维护和命运决定中的作用.
阐明在PGC中BMP信号传递的功能背后的分子机制.

主要方法:

BMP信号抑制和smad1/9的淘汰实验.
使用CRISPR-Cas9.9生成PGC特有的smad1/9淘汰,使用CRISPR-Cas9.9进行淘汰.
转录组分析和DNA损伤反应途径验证 (ATR-pChk1激活).

主要成果:

BMP-Smad1/9信号对于PGC维护至关重要,而不是命运的决定.
抑制BMP或抑制smad1/9可以降低PGC的数量.
斯马德1/9缺乏PGCs导致增殖受损,亡增加和DNA损伤反应激活.
在smad1/9缺乏PGCs中,ATR抑制部分恢复了PGC数量.

结论:

BMP-Smad1/9信号传递通过调节繁殖,亡和DNA损伤反应,在斑马鱼的PGC维护中起着至关重要的作用.
这些发现揭示了与哺乳动物相比,在脊椎动物的PGC发育中,BMP信号的作用保留但功能上是不同的.

更多相关视频

Microbead Implantation in the Zebrafish Embryo

Microbead Implantation in the Zebrafish Embryo

Published on: July 30, 2015

Generating Chimeric Zebrafish Embryos by Transplantation

Generating Chimeric Zebrafish Embryos by Transplantation

Published on: July 17, 2009

相关概念视频

TGF - β Signaling Pathway

TGF - β Signaling Pathway

The TGF-β signaling pathway regulates cell growth, differentiation, adhesion, motility, and development. TGF-β ligands that induce TGF-β signaling are synthesized in their latent form. Several proteases or cell surface receptors such as integrins act upon the latent form, releasing the active ligand. There are three types of mammalian TGF-βs: (TGF-β1, TGF-β2, and TGF-β3) that bind as homodimers or heterodimers to TGF-β receptors. The TGF-β receptors...