TRIM9通过DCC和UNC5C控制增长对Netrin的反应
Sampada P Mutalik1, Chris T Ho1, Ellen C O'Shaughnessy1
1Department of Cell Biology and Physiology, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA.
Journal of neurochemistry
|January 28, 2025
概括
E3 泛基因酶TRIM9通过网林-1调节轴突导向的吸引力和排斥力. TRIM9与网林受体DCC和UNC5C相互作用,影响生长反应和神经元发育.
科学领域:
- 神经科学是一个神经科学.
- 分子生物学分子生物学
- 发展生物学 发展生物学
背景情况:
- 网林-1是一种指导提示,可以吸引或排斥轴突.
- 除了DCC和UNC5受体之外,netrin-1引发各种轴突反应的机制尚未完全理解.
- 众所周知,TRIM9是一种E3泛基因酶,通过DCC调节有吸引力的网林-1反应.
研究的目的:
- 调查TRIM9在对网-1的吸引和排斥轴突反应中的作用.
- 确定TRIM9如何与网素受体DCC和UNC5C相互作用.
- 阐明TRIM9在生长形态发生和神经元发育中的功能.
主要方法:
- 利用基于微流体的netrin-1梯度和浴应用来研究小鼠皮层神经元中的轴突反应.
- 采用了UNC5C和DCC的淘汰,以评估它们在网林-1介导的吸引和排斥中的作用.
- 研究了TRIM9的局部化,与DCC和UNC5C的相互作用,以及它对受体表面水平和FAK活性的影响.
主要成果:
- 小鼠内特林-1诱导了双相轴突反应 (低度的吸引力,高度的排斥).
- 对TRIM9的删除改变了吸引力和排斥力轴突的转向和生长的大小,以响应netrin-1.
- TRIM9对于DCC和UNC5C表面水平的网林-1依赖性变化至关重要,并且对FAK活动产生负面调节.
结论:
- TRIM9在通过网-1调解吸引力和排斥力轴突引导方面发挥着至关重要的作用.
- TRIM9与DCC和UNC5C受体相互作用和调节,影响生长的动态.
- TRIM9是神经元发育的关键调节者,通过控制网-1信号通路来控制神经元发育.
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