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相关实验视频

Updated: Jun 8, 2026

A Method for Selecting Structure-switching Aptamers Applied to a Colorimetric Gold Nanoparticle Assay
12:31

A Method for Selecting Structure-switching Aptamers Applied to a Colorimetric Gold Nanoparticle Assay

Published on: February 28, 2015

使用扫描离子导电光谱学对用户定义的基于aptamer的目标进行受控检测.

Helena Miljkovic1,2, Lely Feletti1, Gordanna Pistoletti Blanchet3

  • 1Laboratory of Nanoscale Biology (LBEN), Institute of Bioengineering, School of Engineering, Swiss Federal Institute of Technology Lausanne (EPFL), 1015 Lausanne, Switzerland.

ACS nano
|March 31, 2025
PubMed
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这项研究引入了一种新的纳米孔感应系统,使用可编程的aptamer在DNA载体上进行改进的疾病生物标志物检测. 增强的空间和速度控制显著提高了临床应用的检测精度和信号噪声比.

科学领域:

  • 生物技术是生物技术.
  • 纳米技术 纳米技术
  • 分子诊断学 分子诊断

背景情况:

  • 固态纳米孔对早期疾病生物标志物检测有希望.
  • 目前使用DNA载体和自由转位的方法由于不受控制的转位,其准确性和信号噪声比 (SNR) 较低.
  • 这些局限性阻碍了纳米孔技术的临床应用.

研究的目的:

  • 开发一种基于纳米孔的系统,以提高准确性和控制性来感知生物流体中的分子.
  • 通过实现可控转位和重复分析物扫描来克服标准纳米孔方法的局限性.
  • 提高检测率,并使多重传感能够用于疾病生物标志物发现.

主要方法:

  • 一个纳米孔系统利用可编程的aptamer序列连接到DNA载体绑在玻璃表面.
  • 使用扫描离子导电谱学 (SICS) 进行受控的空间和速度转移 (x,y,z方向).
  • 设计具有多个aptamer结合点的DNA载体,以增加实验产量和多重化.

主要成果:

  • 实现了高达74%的检测率,比标准方法的14%有显著的改善.
  • 证明了5次以上对相同的aptamer-target网站进行重复扫描,提高了数据可靠性.
  • 启用了DNA载体上aptamer目标部位的密度增加,为多重传感铺平了道路.
关键词:
六个 六个一个aptamer的应用程序.蛋白质蛋白质是蛋白质蛋白质的组成部分.单个分子检测检测单个分子检测固态纳米孔 固态纳米孔

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Phthalic Acid Ester-Binding DNA Aptamer Selection, Characterization, and Application to an Electrochemical Aptasensor
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Phthalic Acid Ester-Binding DNA Aptamer Selection, Characterization, and Application to an Electrochemical Aptasensor

Published on: March 21, 2018

Aptamer-Based Target Detection Facilitated by a 3-Stage G-Quadruplex Isothermal Exponential Amplification Reaction
03:38

Aptamer-Based Target Detection Facilitated by a 3-Stage G-Quadruplex Isothermal Exponential Amplification Reaction

Published on: October 6, 2022

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Last Updated: Jun 8, 2026

A Method for Selecting Structure-switching Aptamers Applied to a Colorimetric Gold Nanoparticle Assay
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A Method for Selecting Structure-switching Aptamers Applied to a Colorimetric Gold Nanoparticle Assay

Published on: February 28, 2015

Phthalic Acid Ester-Binding DNA Aptamer Selection, Characterization, and Application to an Electrochemical Aptasensor
09:33

Phthalic Acid Ester-Binding DNA Aptamer Selection, Characterization, and Application to an Electrochemical Aptasensor

Published on: March 21, 2018

Aptamer-Based Target Detection Facilitated by a 3-Stage G-Quadruplex Isothermal Exponential Amplification Reaction
03:38

Aptamer-Based Target Detection Facilitated by a 3-Stage G-Quadruplex Isothermal Exponential Amplification Reaction

Published on: October 6, 2022

结论:

  • 拟议的基于SICS的纳米孔系统为疾病生物标志物提供了卓越的控制和显著更高的检测率.
  • 可编程的aptamer序列和DNA载体允许用户定义的传感能力和潜在的扩展到各种生物标志物.
  • 这项技术有望在临床环境中推进早期诊断应用.