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Labeling DNA Probes

Labeling DNA Probes

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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Updated: Jun 1, 2025

Detection of Exosomal Biomarker by Electric Field-induced Release and Measurement EFIRM

Detection of Exosomal Biomarker by Electric Field-induced Release and Measurement EFIRM

Published on: January 23, 2015

一个基于双探针的光传感器阵列,用于检测稀土元素离子.

Hamada A A Noreldeen^1,2, Chen-Ting Zhu¹, Kai-Yuan Huang¹

¹Fujian Key Laboratory of Drug Target Discovery and Structural and Functional Research, School of Pharmacy, Fujian Medical University, Fuzhou 350004, China. DHH8908@163.com.

|January 22, 2025

概括

此摘要是机器生成的。

这项研究引入了一种新的光传感器阵列,用于检测14种稀土元素离子 (REEIs),使用两种类型的金纳米集群. 该方法在水样中提供了对单个和混合 REEIs 的敏感,同时检测.

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Last Updated: Jun 1, 2025

Detection of Exosomal Biomarker by Electric Field-induced Release and Measurement EFIRM

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Published on: January 23, 2015

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科学领域:

环境科学环境科学
分析化学分析化学
纳米技术纳米技术

背景情况:

由于稀土元素离子对环境和健康的影响,有效检测稀土元素离子 (REEIs) 是至关重要的.
现有的REEI检测方法往往缺乏简单性,灵敏性或同时进行多分析物确定的能力.
对于环境安全,食品质量和生物医学领域的应用,需要多功能光传感器.

研究的目的:

开发一种简单,灵敏和多目标的光传感器阵列,用于同时检测14个REEI.
为了利用两个不同的金纳米集群探头,6-aza-2-thiothymine-gold纳米集群 (ATT-AuNCs) 和牛血清白蛋白/3-mercaptopropionic acid-AuNCs (BSA/MPA-AuNCs),作为双信号通道.
采用模式识别技术来分析光反应并实现准确的REEI识别.

主要方法:

合成和描述ATT-AuNCs和BSA/MPA-AuNCs. 这两种类型的合成和特征.
调查两个探针对14个单独的REEIs的光反应,观察各种增强和灭效应.
应用层次集群分析 (HCA) 和线性差异分析 (LDA) 来识别和分类REEI的模式.
传感器阵列平台的验证使用带有REEI的净化水样本.

主要成果:

开发的光传感器阵列展示了14个REEI的敏感检测,包括Sc³⁺,Gd³⁺,Lu³⁺,Y³⁺,Ce³⁺,Pr³⁺,Yb³⁺,Dy³⁺,Tm³⁺,Sm³⁺,Ho³⁺,Tb³⁺,La³⁺,和Eu³⁺.
双通道探头系统,利用REEI的差分光调制,使得单个和混合REEI检测的有效模式识别成为可能.
该方法在净化水样本中检测REEE的成功验证,展示了其实际适用性.

结论:

一个新的,简单和高效的光传感器阵列平台,用于同时检测多个REEI已经成功建立.
使用两个不同的金纳米集团探测器作为双信号通道与模式识别相结合,为复杂的分析物混合物提供了一种多功能方法.
该方法为环境监测提供了有价值的工具,通过应对同时多个REEI的挑战来确保各种应用程序的安全性和质量.