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相关概念视频

Labeling DNA Probes03:31

Labeling DNA Probes

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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...
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相关实验视频

Updated: Jun 5, 2025

Multiplexed Barcoding Image Analysis for Immunoprofiling and Spatial Mapping Characterization in the Single-Cell Analysis of Paraffin Tissue Samples
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基于核心外光子条形码集成的RCA的无标签多重检测.

Dagan Zhang1, Nan Zhang1, Junqi Zhao1

  • 1Department of Clinical Laboratory, Institute of Translational Medicine, The Affiliated Drum Tower Hospital of Nanjing University Medical School, 210008, Nanjing, China.

Biosensors & bioelectronics
|December 10, 2024
PubMed
概括

这项研究引入了一种新的生物传感器,用于快速,无标签的病毒量化. 光子晶体条形码和滚动圆放大系统可以同时检测多种病毒,如SARS-CoV-2和H1N1,具有高灵敏度.

关键词:
条形码条形码是什么意思核心外的核心外没有标签的无标签.这是一个光子晶体.在RCA RCA中使用.

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科学领域:

  • 纳米技术纳米技术
  • 生物医学工程 生物医学工程
  • 分子诊断学 分子诊断学

背景情况:

  • 准确和快速的病毒量化对于生物医学检测至关重要.
  • 现有的方法可能缺乏多重复合能力或敏感性,无法同时检测多个病毒标.

研究的目的:

  • 开发一种无标签的多重病毒查定量生物传感器.
  • 整合光子晶体 (PhC) 条形码与滚动圆放大 (RCA) 进行增强检测.

主要方法:

  • 使用亚克力酸和聚乙烯糖醇二烯酸盐制造核心外水凝光子晶体 (PhC) 条形码.
  • 利用光子晶体核心进行检测,并调整其结构以适应不同的颜色条形码.
  • 实施一个DNA装饰的抗体复合体,使用阻塞的原料和RCA策略,将蛋白质信号转换为核酸信号.

主要成果:

  • 在单个反应中同时检测SARS-CoV-2-N,SARS-CoV-2-S和H1N1.
  • 实现了高度敏感的多重定量检测,检测极限低至0.30 pg/mL.
  • 用临床样本验证了平台,证明了高精度和特异性.

结论:

  • 开发的生物传感器为快速,灵敏和准确的多重病毒检测提供了一个有前途的平台.
  • PhC条形码和RCA的整合为生物医学查提供了一种多功能方法.
  • 生物传感器显示出临床诊断和查应用的巨大潜力.