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用高重复率的双光子显微镜对光蛋白进行光白分析

Chun Hung Weng¹, Kyu Young Han¹

¹CREOL, The College of Optics and Photonics, University of Central Florida, Orlando, Florida, USA.

Optics communications

|August 8, 2025

概括

高重复率激发在双光子显微镜 (TPM) 中减少光漂白,但其对EGFP和tdTomato等光蛋白的有效性取决于激发波长和特定的光体. 这一发现有助于优化TPM成像参数.

科学领域:

生物物理学的生物物理.
显微镜的使用方法
细胞生物学细胞生物学

背景情况:

两光子激发光显微镜 (TPM) 对于活细胞成像至关重要.
严重的光漂白限制了长期和定量TPM研究.
高重复率激发是一种减轻光漂白的潜在策略.

研究的目的:

为了研究高重复率激发的实用性,以减少光蛋白中的光漂白.
评估激发波长和重复率对TPM中的EGFP和tdTomato光漂白的影响.

主要方法:

对EGFP和tdTomato进行了光漂白测试.
实验使用了80 MHz和640 MHz的重复率的双光子激发显微镜.
分析的重点是重复率,激发波长和光漂白之间的关系.

主要成果:

通过高重复率激发的光漂白减少高度依赖激发波长.
不同的光体之间,包括EGFP和tdTomato,效果有很大差异.
尽量减少光漂白的最佳参数是光体和波长特定的.

结论:

高重复率激发可以减少TPM中的光漂白,但并非普遍适用于所有光蛋白.
需要仔细选择激发波长和重复率,以尽量减少光漂白和光损伤.
这些发现为优化现场成像的TPM实验条件提供了指导.

关键词:

欧洲粮食计划署 (EGFP) 是一个全球粮食计划署.光蛋白质是一种光蛋白质.高的重复率,高的重复率摄影漂白的使用方法两光子显微镜技术

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