相关实验视频

Updated: Jan 18, 2026

Bioorthogonal Chemical Imaging of Cell Metabolism Regulated by Aromatic Amino Acids

Bioorthogonal Chemical Imaging of Cell Metabolism Regulated by Aromatic Amino Acids

Published on: May 12, 2023

FLIPs:基因编码的分子生物传感器,用于通过线性二元化显微镜对细胞信号的功能成像

Paul Miclea^1,2, Vendula Nagy-Marková^1,2, Robin Van den Eynde³

¹First Faculty of Medicine, Charles University in Prague, Kateřinská 32, 121 08 Prague, Czechia.

Science advances

|January 16, 2026

概括

我们开发了新的光生物传感器 (FLIPs),可以对细胞过程进行成像,而无需修改目标蛋白. 这些传感器揭示了对G蛋白结合受体活性和内细胞分裂的新见解.

科学领域:

分子生物学分子生物学
生物物理学的生物物理.
细胞生物学细胞生物学

背景情况:

基因编码的光生物传感器使生物分子事件的光学检测成为可能.
目前的生物传感器通常需要对蛋白进行修改,从而限制了应用.
许多细胞过程仍然难以实时成像.

研究的目的:

引入一种基于光蛋白光学属性方向性的新型生物传感器设计 (FLIP).
展示FLIPs对未经修改的内源蛋白质成像的能力.
探索关于细胞信号通路和蛋白质动态的新见解.

主要方法:

开发了FLIP,利用光蛋白的定向光学特性.
采用定制的三扫描线性二极化共聚焦显微镜进行成像.
应用FLIP以实时可视化G蛋白结合受体 (GPCR) 和阿雷斯活性.

主要成果:

FLIP 具有简单的设计,高灵敏度,复杂化和比度读数,没有目标修改.
成功成像了GPCRs,G蛋白和逮捕素的实时活动.
在内细胞分裂过程中确定了GPCR-β-arrestin复合物的新型,显著的构造变化.
实现了内源G蛋白活性无与伦比的成像.

结论:

FLIPs代表了一个强大的,多功能平台,用于成像细胞信号.
该技术使以前无法访问的分子事件可视化.
开辟了未来研究细胞信号和药物发现的途径.

更多相关视频

Multimodal Optical Imaging Platform for Studying Cellular Metabolism

Multimodal Optical Imaging Platform for Studying Cellular Metabolism

Published on: June 6, 2025

Imaging G-protein Coupled Receptor GPCR-mediated Signaling Events that Control Chemotaxis of Dictyostelium Discoideum

Imaging G-protein Coupled Receptor GPCR-mediated Signaling Events that Control Chemotaxis of Dictyostelium Discoideum

Published on: September 20, 2011

相关概念视频

Three-Dimensional Microscopy in Microbiology

Three-Dimensional Microscopy in Microbiology

Three-dimensional imaging techniques are essential in cell biology, allowing researchers to visualize intricate cellular structures with high resolution. Two prominent methods, Differential Interference Contrast Microscopy (DIC) and Confocal Scanning Laser Microscopy (CSLM), provide distinct advantages for imaging live and thick specimens, respectively.Differential Interference Contrast MicroscopyDIC microscopy enhances contrast in transparent, unstained samples by converting phase...

Protein Dynamics in Living Cells

Protein Dynamics in Living Cells

Different fluorescence-based techniques are used to study the protein dynamics in living cells. These techniques include FRAP, FRET, and PET.
Fluorescent recovery after photobleaching (FRAP) is a fluorescent-protein-based detection technique used to quantify protein movement rates within the cell. This method exposes a small portion of the cell to an intense laser beam. The laser beam causes permanent photobleaching of the fluorophore-tagged proteins in the exposed region. As the bleached...