前后组织极性链接介质体的收延伸到轴向图案
Hiromasa Ninomiya1, Richard P Elinson, Rudolf Winklbauer
1Department of Zoology, University of Toronto, Toronto, Ontario M5S 3G5, Canada.
活体组织通过形态生成重塑形状,这对发育和疾病至关重要. 这项研究揭示了Xenopus的内在轴性半皮极性,指导在收延伸 (CE) 过程中组织延伸.
科学领域:
- 发展生物学 发展生物学
- 细胞生物学 细胞生物学
- 形态发生 形态发生 形态发生
背景情况:
- 形态发生,组织形状重塑的过程,对胚胎发育和病理至关重要.
- 收延伸 (CE) 是一个关键的形态遗传过程,涉及细胞间隔和组织延长.
- 远程控制以胚胎轴为导向CE的理解尚不充分.
研究的目的:
- 为了研究Xenopus chordamesoderm的内在极性.
- 要了解这种极性是如何指向收延伸 (CE) 的.
- 阐明将中皮层模式与CE联系起来的机制.
主要方法:
- 使用了Xenopus模型系统.
- 在收延伸 (CE) 过程中研究了细胞行为.
- 分析了内在AP极性和活性蛋白类信号传递的作用.
主要成果:
- 克塞诺普斯 (Xenopus chordamesoderm) 的皮肤表现出对CE.必不可少的内在前后 (AP) 极性.
- 这种极性功能独立于Wnt/平面细胞极性信号.
- 分级的激素样信号建立AP极性,指导组织延长.
结论:
- 在中皮体内内在的AP极性是CE方向的关键决定因素.
- 活动类信号直接将中皮体AP模式与形态遗传运动联系起来.
- 结果提供了关于胚胎轴形成的长距离控制的见解.
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