具有DNA双重编程的分子编码珠子,用于多重检测的光子-奎纳赫距离编程
Wen Cheng1, Wanyan Zeng1, Jiahao Fan1
1State Key Laboratory of Chemo and Biosensing, College of Chemistry and Chemical Engineering, Key Laboratory for Bio-Nanotechnology and Molecular Engineering of Hunan Province, Hunan University, Changsha 410082, P. R. China.
Analytical chemistry
|July 9, 2025
概括
一种新的珠子编码策略在珠子表面使用DNA,简化了多重检测. 这种光灭器 (F-Q) 距离方法减少了基于珠子的测试的成本和技术障碍.
科学领域:
- 生物技术是生物技术.
- 分子诊断学 分子诊断
- 化学生物学 化学生物学
背景情况:
- 目前的珠子编码依赖于染料合的策略,面临物质和技术限制.
- 现有的方法需要预先构建的珠子库,阻碍了灵活性.
研究的目的:
- 开发一种简单,多功能,插即用的珠子编码策略.
- 用珠子表面DNA编码取代染料合的方法.
- 为了简化多重核酸检测和降低成本.
主要方法:
- 使用基于DNA重复的光灭器 (F-Q) 距离编码策略.
- 通过不同的火器位置编码条形码来改变Förster共振能量转移 (FRET) 的效率.
- 使用双通道光流细胞计解码了9个复数条形码.
主要成果:
- 成功实施了珠子表面DNA编码策略.
- 在珠子表面上展示了同时捕获和编码目标.
- 开发了三种多重核酸检测模型:直接捕获,捕获-然后放大,并放大-然后捕获.
结论:
- 新策略为基于珠子的多重检测提供了一种简化且具有成本效益的方法.
- 模块化技术可以与信号放大单元无集成.
- 这种方法扩展了编码工具箱,用于先进的基于珠子的测试.
相关概念视频
Labeling DNA Probes
8.4K
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...
8.4K
DNA Microarrays
18.6K
Microarrays are high-throughput and relatively inexpensive assays that can be automated to analyze large quantities of data at a time. They are used in genome-wide studies to compare gene or protein expression under two varied conditions, such as healthy and diseased states. Microarrays consist of glass or silica slides on which probe molecules are covalently attached through surface functionalization. Most commonly, the slides are prepared through the chemisorption of silanes to silica...
18.6K


