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氨酸调节复合物是内耳的纤毛动力和耳生物发生所必需的
Jessica R Colantonio1, Julien Vermot, David Wu
1Department of Microbiology, Immunology and Molecular Genetics, University of California, Los Angeles, California 90095, USA.
Nature
|December 2, 2008
概括
眼的运动性对于teleosts的耳骨石组装至关重要. 通过dynein复合 knockdown 干扰乳毛功能会损害耳生物发生和局部化,揭示乳毛驱动的流动.
科学领域:
- 发展生物学 发展生物学
- 感官生物学 感官生物学
- 生物矿物化 生物矿物化
背景情况:
- 鱼依靠内耳耳骨来维持平衡和听力.
- 耳石的形成和放置在发育过程中被精确控制.
- 在感官毛细胞上引导耳石组合的机制在很大程度上是未知的.
研究的目的:
- 为了研究毛运动在耳骨石组装和定位中的作用.
- 为了阐明背后的机理 otolith生物矿物化在teleosts.
主要方法:
- 在体内视频显微镜中,测距内耳发育.
- 针对性地制dinein调控复合体和外臂dinein子单元.
- 毛运动性和耳骨石形成的分析.
主要成果:
- 移动的乳毛产生流体,吸引着石前体颗粒.
- 毛运动的破坏导致缺陷的耳皮生物发生和局部化.
- 在这个过程中,dynein调节复合体对于脊椎动物的毛功能至关重要.
结论:
- 眼的运动性是正常的耳骨石组装和teleosts的定位所需的.
- 纤毛驱动的流体流动作为一个关键的表观遗传因素,在奥托利特生物矿物化.
- 这项研究突出了dynein调节复合体在脊椎动物发育中的重要性.
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