相关实验视频

Updated: Jun 27, 2025

Visual Detection of Multiple Nucleic Acids in a Capillary Array

Visual Detection of Multiple Nucleic Acids in a Capillary Array

Published on: November 15, 2017

通过集成可编程分子放大器在芯片上进行跟踪RNA生物标记物的时间编码电气检测

Gurpreet Kaur¹, Marcel Tintelott², Mohit Suranglikar²

¹Institut D'Électronique, de Microélectronique et de Nanotechnologie (IEMN) - UMR CNRS 8520, Univ. Lille Avenue Poincaré, BP 60069, Villeneuve D'Ascq, Cedex, 59652, France.

Biosensors & bioelectronics

|April 27, 2024

概括

这项研究介绍了一种使用场效应晶体管和分子程序的新型 point-of-care 生物传感器,用于敏感检测像microRNAs这样的低度生物标志物. 该技术提供高灵敏度,广泛的动态范围和可重复使用性,用于具有成本效益的诊断.

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:

关怀点 (PoC) 分子诊断在检测低度生物标志物方面面临挑战,原因是不特定的结合和低效的质量传输.
现有的平台在临床应用中难以获得灵敏度和可靠性,特别是在复杂的生物样本上.

研究的目的:

开发一种新的PoC生物传感器,克服低生物标志物检测的局限性.
通过纳米级场效应晶体管和用于放大检测的分子编程的组合来增强信号传导.

主要方法:

使用晶圆尺度制造的纳米生物敏感场效应晶体管阵列 (BioFET阵列) 作为敏感的传感器.
实现了一个可编程的通用分子放大器 (PUMA) 系统,用于生物标记器触发的放大和信号生成.
采用了PUMA活动的时间域电信号分析,而不是传统的门转移测量.

主要成果:

对于miRNA生物标志物LET7a,达到低至10 fM的检测极限 (LoD).
在复杂的生理溶液中证明了从10 pM到10 nM的广泛动态范围.
展示了生物传感器平台的可重复使用性,可用于三种以上的用途,表明了成本效益.

结论:

开发的PoC生物传感器通过一个集成的BioFET和PUMA系统有效地解决了低生物标志物检测方面的挑战.
新的检测策略提供了高灵敏度,广泛的动态范围,以及具有成本效益,可重复使用的诊断工具的潜力.
这种方法绕过了转换器的直接生物标志物杂交,提高了平台的寿命和可靠性.

关键词:

生物肥料和有机肥料制品 (BioFETs) 是一种生物肥料和有机肥料制品.癌症癌症癌症癌症对于ISFETs来说,这是一个很好的方法.异热放大器的同热放大方式纳米电线纳米电线神经退行发生神经退行.这是一个小RNARNA.

更多相关视频

Author Spotlight: Advancements in DNA Nanosensors – Addressing Sensitivity and Selectivity Challenges in Molecular Detection

Author Spotlight: Advancements in DNA Nanosensors – Addressing Sensitivity and Selectivity Challenges in Molecular Detection

Published on: February 9, 2024

ampliPHOX Colorimetric Detection on a DNA Microarray for Influenza

ampliPHOX Colorimetric Detection on a DNA Microarray for Influenza

Published on: June 9, 2011

相关概念视频

Real Time RT-PCR

Real Time RT-PCR

Real-time reverse transcription-polymerase chain reaction, or Real-time RT-PCR, is an analytical tool used to determine the expression level of target genes. The method involves converting mRNA to complementary DNA with the help of an enzyme known as reverse transcriptase, followed by the PCR amplification of the cDNA. These two processes can be performed simultaneously in a single tube or separately as a two-step reaction.
The real-time quantification of the number of amplified products is...

DNA Microarrays

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...

RNA-seq

RNA-seq

RNA sequencing, or RNA-Seq, is a high-throughput sequencing technology used to study the transcriptome of a cell. Transcriptomics helps to interpret the functional elements of a genome and identify the molecular constituents of an organism. Additionally, it also helps in understanding the development of an organism and the occurrence of diseases.
Before the discovery of RNA-seq, microarray-based methods and Sanger sequencing were used for transcriptome analysis. However, while...