一个化物交叉连接的线粒体探针用于固定细胞中的STED成像
Jingting Chen1, Till Stephan2,3, Felix Gaedke4
1College of Future Technology, Institute of Molecular Medicine, National Biomedical Imaging Center, Beijing Key Laboratory of Cardiometabolic Molecular Medicine, Peking University, Beijing 100871, China.
概括
一个新的探测器,PK Mito Orange FX (PKMO FX),允许对固定细胞中的线粒体进行高细节超分辨率成像. 这种探测器克服了以前的局限性,使细胞结构可视化的先进显微镜技术成为可能.
科学领域:
- 细胞和分子成像技术
- 显微镜技术 显微镜技术
- 生物物理学的生物物理.
背景情况:
- 光标签对于超分辨率显微镜至关重要,使细胞结构的详细可视化成为可能.
- 现有的线粒体超分辨率成像探测器在化学固定后往往无法保持光.
- 这种限制限制了线粒体超分辨率成像,主要局限于活细胞.
研究的目的:
- 开发一种特定于线粒体的探头,用于固定标本的超高分辨率成像.
- 为了克服化学固定后探针在线粒体中保留的挑战.
- 为了使线粒体的相关超高分辨率光和电子显微镜.
主要方法:
- 介绍PK Mito Orange FX (PKMO FX),一个具有固定驱动交叉链接图案的探针.
- 在化学固定后评估PKMO FX光保留.
- 评估PKMO FX用于775 nm的刺激排放耗尽 (STED) 成像.
- 证明与免疫标记和相关光和电子显微镜的兼容性.
主要成果:
- 在线粒体固定后PKMO FX表现出高光保留.
- 该探头能够在化物固定之前和之后进行纳米成像.
- PKMO FX与标准免疫标记协议兼容.
- 该探测器通过利用线粒体形态学来促进相关超分辨率光和电子显微镜.
结论:
- PKMO FX是一种新的线粒体特异性探针,适用于固定样品的超分辨率成像.
- 这种探测器扩大了在纳米分辨率下对线粒体的多模态显微镜的可用工具包.
- 通过PKMO FX,可以对以前仅限于活细胞研究的细胞结构进行先进的成像.
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