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Related Experiment Video

Updated: Jun 9, 2026

Preparation of Poly(pentafluorophenyl acrylate) Functionalized SiO2 Beads for Protein Purification

Preparation of Poly(pentafluorophenyl acrylate) Functionalized SiO₂ Beads for Protein Purification

Published on: November 19, 2018

A novel method for large-scale immuno-SEM using protein G coupled polystyrene beads.

In-Hwan Song¹, James E Dennis

¹Department of Anatomy, College of Medicine, Yeungnam University, 317-1 Daemyungdong, Daegu 705-717, South Korea.

Journal of Electron Microscopy

|August 25, 2010

Summary

Protein G-coupled beads successfully labeled specific antibodies on articular cartilage. This immuno-scanning electron microscopy method offers a valuable tool for observing protein distribution and antigenicity on tissue surfaces.

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Antibody Labeling with Fluorescent Dyes Using Magnetic Protein A and Protein G Beads

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Published on: September 15, 2016

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Last Updated: Jun 9, 2026

Preparation of Poly(pentafluorophenyl acrylate) Functionalized SiO2 Beads for Protein Purification

Preparation of Poly(pentafluorophenyl acrylate) Functionalized SiO₂ Beads for Protein Purification

Published on: November 19, 2018

Antibody Labeling with Fluorescent Dyes Using Magnetic Protein A and Protein G Beads

Antibody Labeling with Fluorescent Dyes Using Magnetic Protein A and Protein G Beads

Published on: September 15, 2016

Area of Science:

Biomaterials Science
Immunohistochemistry
Surface Analysis

Background:

Accurate visualization of specific protein distribution on biological surfaces is crucial for understanding tissue structure and function.
Current methods may have limitations in simultaneously assessing antigenicity and surface morphology at the micrometre level.

Purpose of the Study:

To develop and validate an immuno-scanning electron microscopy (immuno-SEM) technique using protein G-coupled beads for detecting specific proteins on articular cartilage.
To evaluate the efficacy of antibody-tagged beads in labeling target antigens compared to isotype controls.

Main Methods:

Polystyrene beads (0.76 μm diameter) were conjugated with protein G.
Anti-type II collagen IgG or anti-chondroitin-4-sulphate IgG were subsequently attached to protein G.
Antibody-tagged beads were applied to articular cartilage samples, and labeled beads were quantified using SEM.

Main Results:

Antibody-tagged beads demonstrated significantly higher labeling on articular cartilage compared to IgG isotype control beads.
The immuno-SEM method successfully visualized specific protein distribution on the cartilage surface.
The technique provided simultaneous information on surface structure and antigenicity.

Conclusions:

Immuno-SEM utilizing protein G-coupled beads is a valuable and effective method for micrometre-range observation of specific protein distribution on tissue and organ surfaces.
This approach offers a simultaneous assessment of both structural and antigenic properties at the surface level.
The technique holds promise for advancing research in histology and diagnostics.