对于无标签的光敏化,Allosteric探测器识别诱导的指数放大反应,色度检测小细胞外囊泡的色度检测
Can Wu1, Jingjun Xie2, Yuyu Chen3
1Department of Respiratory and Critical Care Medicine, Chongqing Hospital of Traditional Chinese Medicine, Chongqing 400021, China.
ACS omega
|March 31, 2025
概括
研究人员开发了一种快速,无标签的平台,使用光敏化色谱检测小细胞外囊泡 (sEVs). 这种敏感的生物传感器为现场疾病生物标志物检测提供了一种方便的方法.
科学领域:
- 生物医学工程 生物医学工程
- 纳米技术 纳米技术
- 分析化学 分析化学
背景情况:
- 小细胞外囊泡 (sEVs) 显示为COPD和肺癌等疾病的诊断生物标志物具有前途.
- 目前用于sEV检测的方法缺乏在现场应用的便利性和灵敏性.
研究的目的:
- 开发一个便携式,灵敏和快速检测sEVs的系统.
- 创建一个无标签的色度测量平台,用于视觉 sEV 检测.
主要方法:
- 采用了一种全osteric 探针,针对 sEVs 的 CD63 蛋白.
- 在信号放大方面采用光敏化色度方法.
- 开发了一种单步反应,以实现高效的检测.
主要成果:
- 在60分钟内实现了对sEV的视觉检测.
- 证明了高灵敏度,检测极限低至1.21颗粒子/μL.
- 该平台是无标签的,有色度的.
结论:
- 开发的平台可以快速,灵敏地在现场检测sEVs.
- 这种多功能策略可以被调整为检测其他生物标志物,使用不同的体.
- 这项技术有可能用于广泛的生物传感器应用.
相关概念视频
03:31Labeling 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
01:19Protein Dynamics in Living Cells
2.0K
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...
2.0K