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相关概念视频

In-situ Hybridization02:31

In-situ Hybridization

9.2K
In situ hybridization (ISH) is a technique used to detect and localize specific DNA or RNA molecules in cells, tissue, or tissue sections using a labeled probe. The technique was first used in 1969 for the investigation of nucleic acids. It is currently an essential tool in scientific research and clinical settings, especially for diagnostic purposes.
Types of probes and labels
A probe is a complementary strand of DNA or RNA that binds to corresponding nucleotide sequences in a cell. Many...
9.2K
FISH - Fluorescent In-situ Hybridization02:07

FISH - Fluorescent In-situ Hybridization

19.6K
Fluorescence in situ hybridization, or FISH, was developed in the early 1980s and has quickly become one of the most widely used techniques in cytogenetics. Labeled probes are used to bind complementary DNA or RNA sequences on a chromosome or in a region within a cell. Earlier, the probes could only be obtained by cloning or reverse transcription of a DNA template. Currently, the probe oligonucleotides can be synthesized synthetically. Additionally, with the advancement of optical techniques,...
19.6K
Protein Networks02:26

Protein Networks

3.9K
An organism can have thousands of different proteins, and these proteins must cooperate to ensure the health of an organism. Proteins bind to other proteins and form complexes to carry out their functions. Many proteins interact with multiple other proteins creating a complex network of protein interactions.
These interactions can be represented through maps depicting protein-protein interaction networks, represented as nodes and edges. Nodes are circles that are representative of a protein,...
3.9K
Protein-protein Interfaces02:04

Protein-protein Interfaces

12.5K
Many proteins form complexes to carry out their functions, making protein-protein interactions (PPIs) essential for an organism's survival. Most PPIs are stabilized by numerous weak noncovalent chemical forces. The physical shape of the interfaces determines the way two proteins interact. Many globular proteins have closely-matching shapes on their surfaces, which form a large number of weak bonds. Additionally, many PPIs occur between two helices or between a surface cleft and a...
12.5K
Labeling DNA Probes03:31

Labeling DNA Probes

8.1K
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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相关实验视频

Updated: Jun 5, 2025

Detection of Heterodimerization of Protein Isoforms Using an in Situ Proximity Ligation Assay
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Detection of Heterodimerization of Protein Isoforms Using an in Situ Proximity Ligation Assay

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在现场使用混合增强的近距离结合试验可视化蛋白质-蛋白质相互作用.

Yinghui Qiu1,2, Yanxiu Liu1, Weilin Zheng1

  • 1School of Medicine and School of Biomedical Sciences, Huaqiao University, Xiamen, Fujian 361021, China.

Analytical chemistry
|December 7, 2024
PubMed
概括
此摘要是机器生成的。

我们开发了一种新方法,即混合化增强的近距离结合试验 (HPLA),以更好地可视化蛋白质-蛋白质相互作用. 这种技术提高了研究细胞功能和疾病的准确性.

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Visualization of Protein-protein Interaction in Nuclear and Cytoplasmic Fractions by Co-immunoprecipitation and In Situ Proximity Ligation Assay
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Visualization of Protein-protein Interaction in Nuclear and Cytoplasmic Fractions by Co-immunoprecipitation and In Situ Proximity Ligation Assay

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Detection and Visualization of DNA Damage-induced Protein Complexes in Suspension Cell Cultures Using the Proximity Ligation Assay
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Detection and Visualization of DNA Damage-induced Protein Complexes in Suspension Cell Cultures Using the Proximity Ligation Assay

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相关实验视频

Last Updated: Jun 5, 2025

Detection of Heterodimerization of Protein Isoforms Using an in Situ Proximity Ligation Assay
09:18

Detection of Heterodimerization of Protein Isoforms Using an in Situ Proximity Ligation Assay

Published on: October 20, 2018

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Visualization of Protein-protein Interaction in Nuclear and Cytoplasmic Fractions by Co-immunoprecipitation and In Situ Proximity Ligation Assay
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Visualization of Protein-protein Interaction in Nuclear and Cytoplasmic Fractions by Co-immunoprecipitation and In Situ Proximity Ligation Assay

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Detection and Visualization of DNA Damage-induced Protein Complexes in Suspension Cell Cultures Using the Proximity Ligation Assay
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科学领域:

  • 生物化学 生化学
  • 分子生物学分子生物学
  • 细胞生物学 细胞生物学

背景情况:

  • 蛋白与蛋白相互作用 (PPI) 对于理解细胞过程和疾病发病过程至关重要.
  • 准确检测和可视化PPI对于生物研究至关重要.

研究的目的:

  • 引入一种新型检测方法,即杂交增强的近距离结合试验 (HPLA),以更好地检测蛋白质-蛋白质相互作用.
  • 通过前混合化步骤提高近距离结合试验的效率和精度.

主要方法:

  • 在HPLA中,采用了带有刺探针的预杂化步骤,以促进DNA探针对抗体-寡核酸合物的结合.
  • 这一过程导致V形悬浮的形成,促进探头的循环化.
  • 通过滚动圈放大循环化DNA模板的放大产生可检测的信号.

主要成果:

  • 与标准的近距离结合试验相比,HPLA实现了更好的结合效率.
  • 该测试提供了更清晰,更精确的蛋白质与蛋白质相互作用的可视化.
  • 在研究与癌症相关的蛋白相互作用和信号通路方面已证明有用,使得可靠的定量分析成为可能.

结论:

  • HPLA提供了一种灵敏而准确的方法来研究蛋白质-蛋白质相互作用.
  • 增强的结合效率和信号放大有助于更可靠的生物见解.
  • 这种技术在细胞生物学,疾病机制研究和药物发现方面具有广泛的应用.