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Two-dimensional Gel Electrophoresis

Two-dimensional Gel Electrophoresis

Two-dimensional gel electrophoresis is a high-resolution protein separation method first introduced by O' Farrell and Klose in 1975. This method involves protein separation by two dimensions, mass and charge, making it more accurate than one-dimensional gel electrophoresis.
The first dimension separation uses the isoelectric focusing or IEF technique performed on immobilized pH gradient (IPG) strips that separate proteins according to their isoelectric points.
Biological samples, such as cells...

SDS-PAGE

SDS-PAGE

Gel electrophoresis is a method that separates biological macromolecules like nucleic acids or proteins by forcing them to pass through a gel matrix under an electric field.
A variation of gel electrophoresis, termed polyacrylamide gel electrophoresis (PAGE), is commonly used for separating proteins according to their molecular size by passing them through a polyacrylamide gel. Because of the varying charges associated with amino acid side chains, PAGE can be used to separate intact proteins...

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Updated: Jul 17, 2026

Two-dimensional Gel Electrophoresis Coupled with Mass Spectrometry Methods for an Analysis of Human Pituitary Adenoma Tissue Proteome

Two-dimensional Gel Electrophoresis Coupled with Mass Spectrometry Methods for an Analysis of Human Pituitary Adenoma Tissue Proteome

Published on: April 2, 2018

Plasma proteome analysis: 2D gels and chips.

A Herosimczyk¹, N Dejeans, T Sayd

¹Department of Animal Physiology and Cytobiology, Agricultural University, Szczecin, Poland.

Journal of Physiology and Pharmacology : an Official Journal of the Polish Physiological Society

|January 18, 2007

Summary

Understanding plasma proteins is key to organism phenotype. This review covers two-dimensional electrophoresis and protein microarrays for plasma proteome analysis, highlighting their role in disease biomarker discovery.

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Consensus Brain-derived Protein, Extraction Protocol for the Study of Human and Murine Brain Proteome Using Both 2D-DIGE and Mini 2DE Immunoblotting

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Area of Science:

Proteomics and clinical diagnostics.

Background:

Plasma proteome analysis is crucial for understanding biological phenotypes and disease mechanisms.
Plasma proteins serve as vital biomarkers for diagnosing diseases and monitoring physiological functions.
The diversity of plasma proteins necessitates advanced analytical techniques for comprehensive study.

Purpose of the Study:

To review the application of two-dimensional electrophoresis in plasma proteome analysis.
To discuss the current technical status of proteomic techniques for plasma samples.
To highlight the potential of plasma proteome research in biological and clinical advancements.

Main Methods:

Two-dimensional polyacrylamide gel electrophoresis (2D-PAGE) for separating thousands of plasma proteins.
Comparative analysis of normal and diseased plasma samples to identify differentially expressed proteins.
Overview of complementary proteomic techniques like protein microarrays for plasma analysis.

Main Results:

2D-PAGE is a primary tool for visualizing and comparing complex plasma proteomes.
Identification of distinct protein expression patterns between healthy and diseased states is achievable.
Emerging techniques like protein microarrays offer alternative or complementary approaches to plasma proteome profiling.

Conclusions:

Plasma proteome research offers significant advancements in biological and clinical fields.
2D-PAGE remains a foundational technique for plasma protein separation and discovery.
Continued development of proteomic technologies will enhance the utility of plasma as a diagnostic specimen.