近红外PAINT定位显微镜通过染色体补充植物色素衍生的光标签
Kai Lu1, Tetsuichi Wazawa1, Tomoki Matsuda1
1SANKEN (The Institute of Scientific and Industrial Research), Osaka University, 8-1 Mihogaoka, Ibaraki, Osaka, 567-0047, Japan.
Communications biology
|April 18, 2024
概括
研究人员开发了一种新的近红外光探测器Rep-miRFP. 这种探测器非共价地结合了比利韦丁,允许光恢复,并使细胞中先进的成像技术成为可能.
科学领域:
- 生物物理学的生物物理.
- 分子生物学分子生物学
- 显微镜的使用方法
背景情况:
- 细菌的植物染色体是工程光蛋白 (FP) 的优秀支架.
- 基于植物色素的FP的近红外 (NIR) 辐射扩大了光谱能力,超出了类似GFP的FP.
- 目前的植物染色FP使用共价血衍生的四氧化染色体,导致构成性光.
研究的目的:
- 设计一种基于细菌植物染色体的新型NIR成像探头.
- 开发一种与其染色体相互作用的探测器,这种探测器与其染色体相互作用非共价且可逆.
- 为了证明染色体更新对先进显微镜技术的有用性.
主要方法:
- 从细菌的植物染色体中设计Rep-miRFP.
- 证明非共价和可逆的比利弗丁染色体结合.
- 使用染色体补充来恢复光白探针中的光.
- 在哺乳动物细胞中的NIR PAINT纳米镜中应用Rep-miRFP.
主要成果:
- rep-miRFP与 biliverdin 呈现非共价和可逆相互作用.
- 可通过添加新鲜的比利维尔丁来恢复光漂白的Rep-miRFP光.
- 在哺乳动物细胞中成功实施NIR PAINT纳米镜,使用Rep-miRFP.
- 扩大FP的频谱覆盖范围到NIR地区.
结论:
- Rep-miRFP为NIR光成像探针提供了一种新的方法.
- Rep-miRFP的染色体更新能力使超分辨率显微镜的新可能性成为可能.
- 这项工作扩大了近红外频谱中先进的生物成像工具包.
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