相关实验视频

Updated: Jun 6, 2025

Single Droplet Digital Polymerase Chain Reaction for Comprehensive and Simultaneous Detection of Mutations in Hotspot Regions

Single Droplet Digital Polymerase Chain Reaction for Comprehensive and Simultaneous Detection of Mutations in Hotspot Regions

Published on: September 25, 2018

酶辅助上转换光编码生物传感系统,用于同时检测多个位点的EGFR突变

Haiyang Gao¹, Gao Si², Zhendong Wang¹

¹Pharmacy College, Henan University of Chinese Medicine, Zhengzhou, 450046, PR China.

Analytical and bioanalytical chemistry

|November 23, 2024

概括

这项研究介绍了一种新的光生物传感系统,用于快速同时检测两个关键的表皮生长因子受体 (EGFR) 突变,L858R和19Del,对于非小细胞肺癌的诊断和治疗至关重要.

科学领域:

生物医学工程生物医学工程
纳米技术纳米技术
分子诊断学分子诊断学

背景情况:

表皮生长因子受体 (EGFR) 突变是各种癌症的关键驱动因素,需要快速检测才能有效治疗患者.
精确识别特定的EGFR突变,如L858R和19Del,指导非小细胞肺癌 (NSCLC) 的个性化治疗.

研究的目的:

开发一种高度敏感的光生物传感系统,同时检测L858R和19Del EGFR突变.
通过化离子化上转化纳米粒子 (UCNPs) 和聚合反应来增强信号放大.

主要方法:

制备两个不同的UCNP (NaYF4:Yb,Er和NaYF4:Yb,Tm) 具有独特的光谱.
通过cDNA杂交,原子转移基聚合 (ATRP) 和磁珠分离进行信号放大.
检测突变通过分析特征性上转化光光谱在酶分裂后.

主要成果:

同时定量检测L858R和19Del突变,具有广泛的检测范围 (10 fM到10 nM).
实现了超低检测极限:L858R的2.44 fM和19Del.的2.13 fM.
证明了与野生类型和其他突变的有效差异化,结果与qPCR一致.

结论:

开发的基于UCNP的生物传感系统为同时检测EGFR突变提供了高灵敏度和特异性.
这项技术显示了早期诊断和精确治疗NSCLC的巨大潜力.
该系统的性能支持其在临床诊断和个性化癌症治疗中的应用.

关键词:

在ATRP中使用ATRP.光生物传感器是一种光生物传感器.在L858R和19Del中.向上转换纳米粒子

更多相关视频

Visualizing Genetic Variants, Short Targets, and Point Mutations in the Morphological Tissue Context with an RNA In Situ Hybridization Assay

Visualizing Genetic Variants, Short Targets, and Point Mutations in the Morphological Tissue Context with an RNA In Situ Hybridization Assay

Published on: August 14, 2018

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

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

Published on: October 6, 2022

相关概念视频

Enzyme-Linked Immunosorbent Assay

Enzyme-Linked Immunosorbent Assay

In 1971, Peter Perlman and Eva Engvall developed an Enzyme-linked immunosorbent assay (ELISA or EIA). ELISA differs from western blot in that the assays are conducted in microtiter plates or in vivo rather than on an absorbent membrane.
There are many different types of ELISAs, but they all involve an antibody molecule whose constant region binds an enzyme, leaving the variable region free to bind its specific antigen. Enzyme-substrate reaction allows the antigen to be visualized or...