相关实验视频

Updated: Jan 10, 2026

Nanogold Labeling of the Yeast Endosomal System for Ultrastructural Analyses

Nanogold Labeling of the Yeast Endosomal System for Ultrastructural Analyses

Published on: July 14, 2014

ExoSloNano:用于识别活细胞中的宏分子和冷电子断层扫描的多式纳米金标签

Lindsey N Young¹, Alice Sherrard², Huabin Zhou³

¹School of Biological Sciences, University of California, San Diego, La Jolla, CA, USA.

|November 29, 2025

概括

研究人员开发了ExoSloNano,这是一种用于活细胞成像的新型纳米黄金探针系统. 该工具增强了冷电子显微镜 (cryo-EM),通过在各种尺度上实现特定蛋白质的检测,扩大了可访问的蛋白质组.

科学领域:

细胞和分子生物学细胞和分子生物学
显微镜和成像技术技术.
结构生物学结构生物学

背景情况:

在现场冷电子显微镜 (cryo-EM) 允许在它们的原生细胞环境中研究宏分子结构.
目前的冷EM方法难以在复杂的细胞环境中识别较小或低丰度的蛋白质.
需要先进的工具来检测细胞冷EM中各种尺寸尺度上的宏分子.

研究的目的:

引入一种新的纳米金探针系统,ExoSloNano,用于在活细胞中增强蛋白质检测.
通过相关光和电子显微镜,冷电子断层扫描 (cryo-ET) 和树脂嵌入式电子显微镜来识别特定的蛋白质.
扩大通过电子显微镜技术检测到的蛋白质范围.

主要方法:

开发和应用ExoSloNano系统,使用纳米金探针进行蛋白质标记.
将探针引入活细胞,保持细胞完整性和分子网络.
使用室温电子显微镜和冷电子断层扫描 (cryo-ET) 进行蛋白质识别和结构分析.

主要成果:

在活细胞中,ExoSloNano成功地识别了细胞质蛋白和核蛋白.
该系统展示了高效的蛋白质标记与分子特异性在冷-ET断层扫描仪内.
在探头引入和成像过程中,完整的分子网络和细胞活力得到了保留.

结论:

ExoSloNano提供了一种强大的新工具,用于使用电子显微镜检测活细胞中的特定蛋白质.
这种方法显著扩大了可用于冷EM和冷ET分析的蛋白质组.
ExoSloNano有助于更深入地了解分子层面的细胞结构和功能.

更多相关视频

Author Spotlight: Direct Synthesis of EM-Visible Gold Nanoparticles in Cells for Protein Localization Analysis with Well-Preserved Ultrastructure

Author Spotlight: Direct Synthesis of EM-Visible Gold Nanoparticles in Cells for Protein Localization Analysis with Well-Preserved Ultrastructure

Published on: April 28, 2023

Visualizing Subcellular Localization of a Protein in the Heart Using Quantum Dots-Mediated Immuno-Labeling Followed by Transmission Electron Microscopy

Visualizing Subcellular Localization of a Protein in the Heart Using Quantum Dots-Mediated Immuno-Labeling Followed by Transmission Electron Microscopy

Published on: September 16, 2022

相关概念视频

Immunogold Electron Microscopy

Immunogold Electron Microscopy

Immunoelectron microscopy utilizes immunogold labeling of endogenous proteins with specific antibodies to detect and localize these proteins in cells and tissues. The procedure provides insights into the distribution and quantification of protein under different stimulation conditions offering clues about their functions. Conjugating highly electron-dense gold particles with primary or secondary antibodies allow antigen detection on and within cells, with high resolution and specificity.