用化学发光光源对LOV域进行光激活
Yuhao Ji1, Ali Heidari1, Brice Nzigou Mombo1
1Institute of Physiological Chemistry and Pathobiochemistry, University of Münster 48149 Münster Germany wegnerse@uni-muenster.de.
Chemical science
|January 19, 2024
概括
化学发光现在可以在光学不透明系统中激活光遗传工具. 这一突破使用现场发光用于精确的细胞控制,克服了以前的交付挑战.
科学领域:
- 生物化学 生物化学
- 分子生物学分子生物学
- 生物技术是生物技术.
背景情况:
- 光遗传学通过使用光来精确控制细胞功能.
- 有效地将光线传递到光学不透明的生物系统中是一个重大挑战.
研究的目的:
- 通过化学发光来研究光氧电压感应 (LOV) 域的光激活.
- 为了证明在具有挑战性的环境中使用现场产生的光用于光遗传应用的可行性.
主要方法:
- 利用化学发光反应 (醇和H2O2) 来产生用于LOV域激活的光.
- 使用珠子聚合试验测试了四种不同的LOV域蛋白 (iLID,BcLOV4,nMagHigh/pMagHigh,VVDHigh).
- 使用巨型单囊 (GUV) 和中性粒细胞样细胞来证明空间控制和生物相关性.
主要成果:
- 通过化学发光成功光激活了所有测试的LOV域,证实了光谱重叠.
- 证明了LOV域特征的光输出依赖激活和逆转动力学.
- 展示了GUV和细胞膜内的空间有限的化学发光激活蛋白质,包括通过活性氧物种的招募.
结论:
- 化学发光作为可行的内源光源用于光遗传激活.
- 这种方法克服了光学不透明系统中光输送的局限性.
- 开辟了研究复杂生物环境中的细胞过程的新途径.
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