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通过随机启动和稳定克拉特林涂层坑的内细胞分裂
Marcelo Ehrlich1, Werner Boll, Antoine Van Oijen
1Department of Cell Biology, Harvard Medical School and The CBR Institute for Biomedical Research, 200 Longwood Avenue, Boston, MA 02115, USA.
Cell
|September 2, 2004
概括
研究人员实时可视化了克拉斯林介导的内细胞分裂. 货物吸收率取决于颗粒大小,这表明了克拉涂层坑形成的核化生长机制.
科学领域:
- 细胞生物学 细胞生物学
- 分子生物学分子生物学
- 生物物理学的生物物理.
背景情况:
- 克拉特林涂层的囊泡介导了从血到内分泌体的基本运输.
- 了解克拉特林涂层坑形成和货物分类的动态对于蜂贩运至关重要.
研究的目的:
- 为了可视化实时的货物分类和内细胞分裂的实时动态,在活细胞中的克拉特林涂层坑中.
- 调查克拉涂层坑组装和货物合并的机制和动力学.
主要方法:
- 使用光标记的克拉和适配器AP-2的克拉涂层坑形成的实时可视化.
- 追踪特定货物分子的吸收,如转移素,LDL和reovirus颗粒.
主要成果:
- 克拉特林集群强度在坑内寿命期间稳步增加,组装时间与货物大小成比例.
- 涂层坑组件遵循一个核化增长机制,增长速度几乎是恒定的.
- 核化场所不是强烈的偏好,一些核化事件是暂时的.
结论:
- 涂层坑随机启动,需要稳定,可能通过货物捕获,以避免崩.
- 货物集成主要发生在新形成的涂层坑中.
- 这些发现支持了由核和生长驱动的克拉斯林介导的内细胞分裂模型,受载荷结合的影响.
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