Jove
Visualize
联系我们
JoVE
x logofacebook logolinkedin logoyoutube logo
关于 JoVE
概览领导团队博客JoVE 帮助中心
作者
出版流程编辑委员会范围与政策同行评审常见问题投稿
图书馆员
用户评价订阅访问资源图书馆顾问委员会常见问题
研究
JoVE JournalMethods CollectionsJoVE Encyclopedia of Experiments存档
教育
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab Manual教师资源中心教师网站
使用条款与条件
隐私政策
政策

相关概念视频

Transducer Mechanism: Enzyme-Linked Receptors01:27

Transducer Mechanism: Enzyme-Linked Receptors

Enzyme-linked receptors are cell-surface receptors acting as an enzyme or associating with an enzyme intracellularly. They make excellent drug targets. Drugs can bind to the extracellular ligand-binding domain or directly affect their enzymatic domain and alter their activity.
Major types that are helpful drug targets include:
Chemotaxis in E. coli01:27

Chemotaxis in E. coli

Chemotaxis in Escherichia coli is a sensory-driven motility mechanism that enables bacteria to navigate chemical gradients, moving toward beneficial environments while avoiding harmful conditions. This process relies on a signal transduction system integrating external chemical cues with flagellar motor control.Chemoreceptors and Signal DetectionE. coli detects chemical gradients through methyl-accepting chemotaxis proteins (MCPs), which are membrane-bound chemoreceptors that sense attractants...
Transduction01:16

Transduction

Among the three main modes of HGT—transformation, conjugation, and transduction—transduction is unique in that it is mediated by bacteriophages, or bacterial viruses.Transduction occurs in two ways. Generalized transduction occurs during the lytic cycle of a bacteriophage infection. In this process, bacteriophages infect bacterial cells, replicate within them, and ultimately cause cell lysis, releasing newly assembled virions. Occasionally, random fragments of the bacterial genome are...
Microbial Biosensors01:17

Microbial Biosensors

Microbial biosensors are analytical devices that utilize living microbes to detect specific substances through measurable signals. These devices consist of two main components: biosensing organisms and signal-transducing elements. Biosensing organisms, such as Escherichia coli or Saccharomyces cerevisiae, are typically housed in multiwell plates connected to transducers, enabling rapid, real-time detection of target analytes.Signal Generation MechanismWhen a target analyte—such as...

您也可能阅读

相关文章

通过共同作者、期刊和引用图与本文相关的文章。

排序
Same author

Ratiometric Fluorescence Biosensor of Allosteric Ag Nanoclusters by G-Quadruplex-Aided Displacement Amplification.

ACS sensors·2026
Same author

Cyclic transformation of stable/metastable nucleic acid structures enables dynamic monitoring of ATP in living cells.

Chemical science·2026
Same author

Unlocking Self-Luminescence of Pyrene-Based Metal-Organic Gel for Sensitive Electrochemiluminescence Assay of Microplastics.

Analytical chemistry·2026
Same author

Bivariate Cooperator-Catalyzed Hairpin Assembly for Amplifying Conformation-Guided Label-Free Ratiometric Fluorescence Biosensing.

Analytical chemistry·2026
Same author

Ordered DNA Cube-Braced Hierarchical Ladder Track-Confined Efficient Circular DNA Walker for Rapid and Ultrasensitive Electrochemical Detection of UDG Activity.

Analytical chemistry·2026
Same author

A Synergistic DNA Walker-Track System with Tailored Spatial Compatibility for Rapid and Ultrasensitive Electrochemical Detection of MUC1.

Analytical chemistry·2026

相关实验视频

Updated: Jul 5, 2026

Plasmid-derived DNA Strand Displacement Gates for Implementing Chemical Reaction Networks
07:50

Plasmid-derived DNA Strand Displacement Gates for Implementing Chemical Reaction Networks

Published on: November 25, 2015

14.4K

有效的多驱动链位移反应用于生物传感.

Rui Zhang1, Xudong Zhou1, Hanmei Deng1

  • 1Key Laboratory of Luminescence Analysis and Molecular Sensing (Southwest University), Ministry of Education, College of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, P. R. China.

Analytical chemistry
|October 14, 2024
PubMed
概括

这项研究引入了一种新的多驱动DNA链位移反应 (SDR),可以显著提高反应速率. 这一突破为生物传感和诊断领域的应用提供了更有效的战略.

科学领域:

  • 生物化学 生物化学
  • 分子生物学分子生物学
  • 纳米技术 纳米技术

背景情况:

  • 传统的DNA链位移反应 (SDR) 面临着动力学限制,原因是DNA双重联结和解离的效率低下.
  • 现有的方法往往表现出繁的过程,阻碍了快速和敏感的检测应用.

研究的目的:

  • 设计一种新型的多驱动SDR (MSDR),集成脚启动,绳拖和点击化学,以提高动力性能.
  • 开发一个实用的生物传感平台,利用MSDR与无废弃DNA多循环放大相结合,用于超敏感的电化学检测.

主要方法:

  • 设计了一个多驱动SDR系统,包括一个入侵链 (O),基底链 (M) 和位移链 (P).
  • 嵌入了链拖和点击化学,以加速DNA链的杂交和解离率.
  • 整合了MSDR与目标触发的,无浪费的DNA多循环放大策略,用于信号生成.

主要成果:

  • 实现了大约比传统方法高出6倍的移位率.
  • 展示了一个生物传感平台,用于快速和超敏感的电化学检测与癌症相关的miRNA-21.
  • 对于miRNA-21.1,获得了低于106.8aM的显著的低检测极限.

结论:

更多相关视频

Parallel High Throughput Single Molecule Kinetic Assay for Site-Specific DNA Cleavage
06:51

Parallel High Throughput Single Molecule Kinetic Assay for Site-Specific DNA Cleavage

Published on: May 6, 2020

3.9K
Author Spotlight: Advancements in DNA Nanosensors – Addressing Sensitivity and Selectivity Challenges in Molecular Detection
07:16

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

Published on: February 9, 2024

899

相关实验视频

Last Updated: Jul 5, 2026

Plasmid-derived DNA Strand Displacement Gates for Implementing Chemical Reaction Networks
07:50

Plasmid-derived DNA Strand Displacement Gates for Implementing Chemical Reaction Networks

Published on: November 25, 2015

14.4K
Parallel High Throughput Single Molecule Kinetic Assay for Site-Specific DNA Cleavage
06:51

Parallel High Throughput Single Molecule Kinetic Assay for Site-Specific DNA Cleavage

Published on: May 6, 2020

3.9K
Author Spotlight: Advancements in DNA Nanosensors – Addressing Sensitivity and Selectivity Challenges in Molecular Detection
07:16

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

Published on: February 9, 2024

899
  • 开发的MSDR策略为DNA链位移反应的动力性能提供了显著的改进.
  • 结合的MSDR和DNA放大平台使得miRNA生物标记物的高度敏感和快速的电化学检测成为可能.
  • 这种方法有望促进生物传感,临床诊断和DNA纳米技术的应用.