相关实验视频

Updated: Mar 17, 2026

High-throughput Screening for Small-molecule Modulators of Inward Rectifier Potassium Channels

High-throughput Screening for Small-molecule Modulators of Inward Rectifier Potassium Channels

Published on: January 27, 2013

一种光蛋白标记的子毒素,具有对Kv1.3 K⁺通道的皮科摩拉亲和力

Jesús Borrego^1,2, Muhammad Umair Naseem¹, Amna Al Olaimi¹

¹Department of Biophysics and Cell Biology, Faculty of Medicine, University of Debrecen, 1. Egyetem Ter, Debrecen H-4032, Hungary.

|March 16, 2026

概括

研究人员创建了一个光融合蛋白,mCherry-Vm24,以可视化电压通道Kv1.3.3. 该工具有助于识别具有与自身免疫和神经系统疾病相关的Kv1.3表达变化的细胞.

科学领域:

分子生物学分子生物学
生物物理学的生物物理.
免疫学免疫学免疫学

背景情况:

电压通道Kv1.3与自身免疫和神经系统疾病有关.
针对Kv1.3对于理解和潜在治疗这些疾病至关重要.

研究的目的:

开发一种用于可视化Kv1.3表达的新型分子工具.
为了创建一个融合蛋白,将Kv1.3抑制剂 (Vm24) 与光记者 (mCherry) 结合起来.

主要方法:

这是Vm24和mCherry蛋白的基因融合.
在Pichia pastoris中表达和通过亲和染色学和HPLC净化.
使用PAGE,质谱学,光谱学和电生理学进行表征.

主要成果:

该mCherry-Vm24融合蛋白已经成功生产和验证.
mCherry-Vm24表现出对Kv1.3.3的 Picomolar 亲和力和高选择性.
通过共聚焦显微镜和流细胞计,对表达Kv1.3的细胞进行了特定的标记.
在体内生物分布研究显示,脏和脏的光.

结论:

mCherry-Vm24构造是体外和体内Kv1.3可视化的一个可行的工具.
这个工具可以帮助研究Kv1.3在相关疾病的背景下.
融合蛋白的特性支持其在诊断和研究环境中的应用.

更多相关视频

Author Spotlight: Functional Site-Directed Fluorometry in Native Cells to Study Skeletal Muscle Excitability

Author Spotlight: Functional Site-Directed Fluorometry in Native Cells to Study Skeletal Muscle Excitability

Published on: June 2, 2023

Single-Cell Optical Action Potential Measurement in Human Induced Pluripotent Stem Cell-Derived Cardiomyocytes

Single-Cell Optical Action Potential Measurement in Human Induced Pluripotent Stem Cell-Derived Cardiomyocytes

Published on: December 22, 2020

相关概念视频

Resting Membrane Potential

Resting Membrane Potential

The relative difference in electrical charge, or voltage, between the inside and the outside of a cell membrane, is called the membrane potential. It is generated by differences in permeability of the membrane to various ions and the concentrations of these ions across the membrane.
The Inside of a Neuron is More Negative
The membrane potential of a cell can be measured by inserting a microelectrode into a cell and comparing the charge to a reference electrode in the extracellular fluid. The...