在Xenopus的发育过程中,通过机械力增强神经形成
Toki Kaneshima1, Masaki Ogawa1, Takayoshi Yamamoto1
1Department of Life Sciences (Biology), Graduate School of Arts and Sciences, The University of Tokyo, Tokyo, Japan.
The International journal of developmental biology
|April 9, 2024
概括
机械力调节脊椎动物发育过程中的细胞特异. 在Xenopus中,外皮细胞的张力通过激活FGF和Wnt通路,影响神经 (NC) 的形成.
科学领域:
- 发育生物学 发展生物学
- 细胞生物学 细胞生物学
- 生物物理学的生物物理.
背景情况:
- 在神经板,神经板边缘和表皮中形成的外皮层模式对于脊椎动物的发育至关重要.
- 虽然分子梯度是已知的调节剂,但在体内细胞规范中机械力的作用在很大程度上尚未被探索.
研究的目的:
- 为了研究机械力在调节细胞特异的作用,在早期的Xenopus发展期间.
- 确定物理力如何影响神经峰 (NC) 形成和相关信号通路.
主要方法:
- 利用吸收试验和原子力显微镜来测量外皮细胞中的机械张力.
- 通过子宫外应用和放松来操纵机械力,以观察NC区域大小的影响.
- 分析了FGF和Wnt信号通路的激活,以应对机械力.
主要成果:
- 在Xenopus早期神经元中,从Xenopus早期神经元的中线开始,外皮细胞张力呈现横向下降.
- 显示,增加的机械力扩大了NC区域,而力放松抑制了它.
- 证实,机械力应用激活了FGF和Wnt通路,这对于NC形成至关重要.
结论:
- 机械力对于神经峰形成至关重要,调节关键信号通路,如FGF和Wnt.
- 分子信号指定神经板,产生影响神经板边界和随后的NC发展的力量.
- 在胚胎发育过程中,物理力量在确定神经的适当尺寸方面发挥着至关重要的作用.
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