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相关概念视频

DNA Microarrays02:34

DNA Microarrays

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...

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相关实验视频

Updated: Jul 20, 2026

A Microfluidic Chip for the Versatile Chemical Analysis of Single Cells
15:41

A Microfluidic Chip for the Versatile Chemical Analysis of Single Cells

Published on: October 15, 2013

在流体微芯片上进行单分子追踪,用于定量检测低丰度核酸.

Tza-Huei Wang1, Yahui Peng, Chunyang Zhang

  • 1Department of Mechanical Engineering and Whitaker Biomedical Engineering Institute, Johns Hopkins University, 3400 North Charles Street, Baltimore, Maryland 21218, USA. thwang@jhu.edu

Journal of the American Chemical Society
|April 14, 2005
PubMed
概括

这项研究引入了一种新的方法,可以使用先进的微流体学和光谱学准确检测稀缺的DNA/RNA分子. 该技术能够对低丰度核酸点进行敏感,快速和定量分析.

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In Situ Detection and Single Cell Quantification of Metal Oxide Nanoparticles Using Nuclear Microprobe Analysis
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Microfluidic Platform with Multiplexed Electronic Detection for Spatial Tracking of Particles
11:54

Microfluidic Platform with Multiplexed Electronic Detection for Spatial Tracking of Particles

Published on: March 13, 2017

相关实验视频

Last Updated: Jul 20, 2026

A Microfluidic Chip for the Versatile Chemical Analysis of Single Cells
15:41

A Microfluidic Chip for the Versatile Chemical Analysis of Single Cells

Published on: October 15, 2013

In Situ Detection and Single Cell Quantification of Metal Oxide Nanoparticles Using Nuclear Microprobe Analysis
14:53

In Situ Detection and Single Cell Quantification of Metal Oxide Nanoparticles Using Nuclear Microprobe Analysis

Published on: February 3, 2018

Microfluidic Platform with Multiplexed Electronic Detection for Spatial Tracking of Particles
11:54

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Published on: March 13, 2017

科学领域:

  • 分子生物学分子生物学
  • 分析化学是一种分析化学.
  • 微流体学 微流体学

背景情况:

  • 精确检测低丰度DNA/RNA对于诊断和研究至关重要.
  • 现有的方法往往需要大量的样本体积或广泛的预放大.
  • 敏感和快速量化核酸仍然是一个挑战.

研究的目的:

  • 开发一种用于定量检测低丰度DNA/RNA分子的方法.
  • 使用微流体技术实现高灵敏度和快速检测.
  • 为了使精确的分子计数与最小的样品和试剂消耗.

主要方法:

  • 使用与分子信标集成的共聚焦光谱学.
  • 采用分子封闭型微流体反应器,配有3D电极,用于精确的分子运输.
  • 专注于在1 fL检测体积中检测单分子流通事件.

主要成果:

  • 实现了亚皮科莫拉DNA点的定量检测.
  • 证明了分子探针的原子级消耗.
  • 在不到2分钟的时间内完成了高精度的检测.

结论:

  • 开发的方法为核酸量化提供了灵敏和快速的方法.
  • 微流体与光谱学的整合使得精确的单分子分析成为可能.
  • 这种技术在分子诊断和生物标志物发现方面有潜在的应用.