接近红外光介导的活细胞线粒体蛋白质组近距离标记
Yuqi Zeng1, Zichun Qiao2,3, He Wang2,3
1Univ Sci & Technol China, Sch Chem & Mat Sci, 96 Jinzhai Rd, Hefei 230026, People's Republic of China.
Analytical chemistry
|February 20, 2025
概括
一种新的近红外激发近距离标记 (PL-NIR) 策略增强了亚细胞蛋白质组分析. 这种方法提高了标签效率和识别覆盖范围,特别是线粒体蛋白质,推动了生物发现.
科学领域:
- 蛋白质组学是指蛋白质组学.
- 细胞生物学 细胞生物学
- 生物化学 生物化学
背景情况:
- 光催化接近标签有助于亚细胞蛋白质组研究.
- 可见光方法有其局限性:效率低,覆盖率差,生物样本的干扰.
研究的目的:
- 开发一种使用近红外 (NIR) 激发来克服可见光限制的近距离标签策略.
- 提高分细胞蛋白质组,特别是线粒体的标签效率和识别覆盖率.
主要方法:
- 开发了一种使用近红外激发 (PL-NIR) 的近距离标签策略.
- 使用NIR激发的催化剂和IR780进行线粒体向和标记.
- 将PL-NIR应用于活的HeLa细胞和LPS刺激的HMC3细胞.
主要成果:
- 在活细胞中,PL-NIR实现了线粒体蛋白质组的选择性标记.
- 鉴定了多达245种线粒体蛋白质,与现有方法相比,覆盖范围显著增加.
- 增强了线粒体内膜蛋白质的识别.
- 在挑战转移的HMC3细胞中解读了线粒体蛋白质组动力学.
结论:
- PL-NIR策略为细胞下蛋白质组分析提供了一个精确的平台.
- PL-NIR显著改善了识别覆盖范围,使得人们能够更深入地了解亚细胞生物学.
- 这种方法推进了对线粒体蛋白质组及其动态的研究.
相关概念视频
Protein Dynamics in Living Cells
2.1K
Different fluorescence-based techniques are used to study the protein dynamics in living cells. These techniques include FRAP, FRET, and PET.
Fluorescent recovery after photobleaching (FRAP) is a fluorescent-protein-based detection technique used to quantify protein movement rates within the cell. This method exposes a small portion of the cell to an intense laser beam. The laser beam causes permanent photobleaching of the fluorophore-tagged proteins in the exposed region. As the bleached...
Fluorescent recovery after photobleaching (FRAP) is a fluorescent-protein-based detection technique used to quantify protein movement rates within the cell. This method exposes a small portion of the cell to an intense laser beam. The laser beam causes permanent photobleaching of the fluorophore-tagged proteins in the exposed region. As the bleached...
2.1K
Labeling DNA Probes
8.1K
DNA probes are fragments of DNA labeled with a reporter tag to enable their detection or purification. The resulting labeled DNA probes can then hybridize to target nucleic acid sequences through complementary base-pairing, and may be used to recover or identify these regions.
Radioisotopes, fluorophores, or small molecule binding partners like biotin or digoxigenin, are the most widely used reporter tags for labeling DNA probes. These labels can be attached to the probe DNA molecule via...
Radioisotopes, fluorophores, or small molecule binding partners like biotin or digoxigenin, are the most widely used reporter tags for labeling DNA probes. These labels can be attached to the probe DNA molecule via...
8.1K


