基于光激活GPCR的自动板读器测试
Elliot J Gerrard1,2,3, Alexandra-Madelaine Tichy2,3, Harald Janovjak2,3,4
1Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, VIC, Australia.
Methods in molecular biology (Clifton, N.J.)
|December 26, 2024
概括
这项研究提出了一种用于测量哺乳动物细胞中光敏感G蛋白结合受体 (GPCR) 活性的新方法,使用标准板读器. 该协议可以在没有专门的光学设备的情况下进行光遗传控制和测试.
科学领域:
- 视觉遗传学 视觉遗传学
- 分子生物学分子生物学
- 细胞信号传递 细胞信号传递
背景情况:
- 光敏感G蛋白合受体 (GPCRs) 对细胞信号通路提供精确的时间控制.
- 标准测定实践往往与光敏感分子工具 (如光素和模拟OptoXRs) 不兼容.
- 量化这些工具在哺乳动物细胞中的活性是一个重大挑战.
研究的目的:
- 开发和介绍一种方法来量化opsin活动在基于自动板读器的测试中.
- 为了证明内部板读器光学在激活和检测光敏感分子工具方面的实用性.
- 为优化涉及光敏感分子工具的测试提供指导.
主要方法:
- 使用常见板式读取器的内部光学元件进行激活和检测.
- 应用该协议来评估循环腺单酸盐 (cAMP) 水平下游的奇米 OptoXR.
- 适应该方法用于其他素和第二信使,如 (Ca2+) 调动.
主要成果:
- 在没有外部光学硬件的情况下,成功量化了opsin活动.
- 使用标准板式读数器检测动力和剂量反应关系的演示.
- 对cAMP水平评估协议的验证.
结论:
- 建立了一种实用的方法,用于测量哺乳动物细胞中的光敏感GPCRs,使用随时可用的盘子阅读器.
- 这种方法通过消除对专门光源的需求,简化了光遗传实验.
- 该协议是多用途的,可以扩展到各种opsins和信号通路.
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