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一个明亮的红色光基因编码传感器用于乳酸成像.

Xuanming Chang1, Xiaoqian Chen1, Xiuze Zhang1

  • 1Optogenetics & Synthetic Biology Interdisciplinary Research Center, Shanghai Frontiers Science Center of Optogenetic Techniques for Cell Metabolism, State Key Laboratory of Bioreactor Engineering, School of Pharmacy, East China University of Science and Technology, Shanghai, 200237, China.

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概括

科学家们开发了FiLa-Red,这是一种新的红色光传感器,用于跟踪活细胞中的乳酸. 这种工具可以精确监测细胞能量代谢和蛋白质活性,从而提高诊断能力.

关键词:
光成像成像的使用方法基因编码的光传感器传感器.乳酸盐代谢 乳酸代谢实时监控实时监控时空动态空间的动态.

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科学领域:

  • 生物化学 生物化学
  • 细胞生物学 细胞生物学
  • 分子成像学分子成像学

背景情况:

  • 乳酸在细胞能量代谢中至关重要,影响蛋白质活性和各种生理和病理过程.
  • 精确的时空跟踪活体系统中的乳酸动态对于理解细胞功能至关重要.
  • 现有的乳酸盐测定缺乏实时细胞分析所需的方便性和精度.

研究的目的:

  • 设计和优化红色光蛋白传感器,用于敏感和特定检测乳酸.
  • 为了描述新型乳酸盐传感器FiLa-Red的性能.
  • 为了证明FiLa-Red在多重监测细胞能量代谢中的实用性.

主要方法:

  • 开发和优化基于红色光蛋白的l-乳酸盐传感器.
  • 传感器性能的表征,包括光变化和解离常数 (Kd).
  • 使用FiLa-Red和其他传感器在细胞区 (细胞质,核,线粒体) 中对乳酸盐,NAD+/NADH进行多重复合成像.

主要成果:

  • 设计的FiLa-Red传感器表现出L-乳酸盐的最大光变化为730%.
  • 传感器的明显解离常数 (Kd) 约为460μM,表明它具有很高的亲和力.
  • 在各种亚细胞位置成功实现了乳酸和NAD+/NADH的多重监测.

结论:

  • FiLa-Red 是一种高灵敏且有效的红色光传感器,用于检测乳酸盐.
  • 传感器可以实时分析细胞能量代谢在体外,在活细胞和潜在的体内.
  • FiLa-Red代表了代谢研究和诊断的宝贵进步.