诺奇配体-受体信号相互作用的多样性
bioRxiv : the preprint server for biology
|September 4, 2023
概括
这项研究量化了Notch信号相互作用,揭示了独特的联结体受体配置文件和边缘甘氨基转移酶效应. 了解这些动态有助于控制Notch路径活动.
科学领域:
- 细胞和分子生物学 细胞和分子生物学
- 发展生物学 发展生物学
- 信号通道的信号通道
背景情况:
- 诺奇信号通路通过连接体-受体相互作用来调节细胞-细胞通信.
- 组件表达,相互作用模式 (cis / trans) 和边缘糖系转移酶调制是信号强度的关键.
研究的目的:
- 量化描述各种联结体和边缘表达水平的Notch信号效率.
- 系统地绘制Notch受体和连接体的转激活,cis抑制和cis激活结果.
主要方法:
- 采用了量化,自下而上的,基于细胞的方法.
- 在两种哺乳动物细胞类型中分析了Notch1/Notch2受体和Dll1,Dll4,Jag1,Jag2连接体之间的相互作用.
- 研究了边缘糖系转移酶 (Lfng) 对信号输出结果的影响.
主要成果:
- 每个连接体-受体对都表现出独特的相互作用概况和边缘依赖.
- 所有的配体都转激活了两个受体;Jag1-Notch1信号是最弱的.
- Cis相互作用主要是抑制性的,除了显示cis激活的Dll1/Dll4-Notch2对外.
- Lfng以不同的方式调节了Delta和Jagged的信号,加强了Delta和削弱了Jagged的转激活.
结论:
- 这项研究提供了诺奇受体-联结体-Fringe相互作用的全面地图.
- 这些发现提供了通过理性扰动控制Notch通路活动的见解.
- 了解 cis 和 trans 相互作用动态对于破译 Notch 信号复杂性至关重要.
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