用于活细胞超分辨率成像的近红外烯化物光体
Ze-Hua Wu1,2, Xingfu Zhu1, Qiqi Yang1
1Max Planck Institute for Polymer Research, Ackermannweg 10, 55128 Mainz, Germany.
Journal of the American Chemical Society
|March 5, 2024
概括
研究人员开发了PMIP,一种用于近红外超分辨率成像的新型有机光体. 这种新材料能够高分辨率地可视化活细胞中的细胞结构和DNA.
科学领域:
- 生物物理
- 化学生物学
- 显微镜
背景情况:
- 有机近红外 (NIR) 光体对于活细胞超分辨率成像至关重要.
- 现有的光体在光稳定性和亮度上常常面临诸如单分子定位显微镜 (SMLM) 等先进显微镜技术的限制.
研究的目的:
- 引入一种新的有机NIR光闪型光剂,PMIP,用于增强SMLM应用.
- 证明PMIP衍生物在活细胞成像和分子检测中的实用性.
主要方法:
- 一种新型的小染色体 (PMIP) 的合成,这种染色体是通过与二二二二甲基胺的融合产生的.
- 用Resorcinol (PMIP-OH) 和azide (PMIP-N3) 进行PMIP的功能化,用于特定的生物向和标签.
- 在活哺乳动物细胞中使用PMIP-OH进行NIR SMLM成像.
- 使用PMIP-N3与点击化学用于新生DNA的特定位置超分辨率成像.
主要成果:
- 在没有添加剂的情况下,PMIP具有732nm的辐射和60%的量子产量.
- 通过使用PMIP-OH,在活哺乳动物细胞中成功对溶酶体进行NIR SMLM成像.
- 通过点击化学使用PMIP-N3来证明新生DNA的特定位置检测和超分辨率成像.
- 新生DNA成像的空间分辨率提高了9倍.
结论:
- PMIP是NIR SMLM应用的一个有前途的新型有机化物.
- 基于PMIP的探测器可提供先进的活细胞成像和高空间分辨率的分子检测.
- 这些发现突显了PMIP在超分辨率显微镜中的各种生物应用的潜力.
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