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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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Differential Proteome Analysis Using 2D-DIGE.

Caroline May1,2, Frederic Brosseron1, Piotr Chartowski1

  • 1Medizinisches Proteom-Center (MPC), Medical Faculty, Ruhr-University Bochum, Bochum, Germany.

Methods in Molecular Biology (Clifton, N.J.)
|May 5, 2021
PubMed
Summary
This summary is machine-generated.

Difference in-gel electrophoresis (DIGE) enhances proteome analysis by enabling multiplexing and improving sensitivity and quantitation over classical 2D-PAGE. This article details 2D-DIGE protocols for minimal and saturation labeling.

Keywords:
CyDye™G-DyesMinimal labelingS-DyesSaturation labelingTwo-dimensional difference in-gel electrophoresis (2D-DIGE)Two-dimensional polyacrylamide gel electrophoresis (2D-PAGE)

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Area of Science:

  • Proteomics
  • Biochemistry
  • Analytical Chemistry

Background:

  • Classical 2D-PAGE visualizes and quantifies proteomes using gel stains and image analysis.
  • Fluorescent labeling reagents significantly improve proteomic analysis capabilities.

Purpose of the Study:

  • To provide detailed protocols for 2D difference in-gel electrophoresis (2D-DIGE).
  • To highlight the advantages of 2D-DIGE over traditional 2D-PAGE.

Main Methods:

  • Utilizing fluorescent reagents for protein labeling in difference in-gel electrophoresis (DIGE).
  • Implementing both minimal and saturation labeling strategies.
  • Performing comparative image analysis of multiplexed protein samples.

Main Results:

  • 2D-DIGE allows multiplexing of up to three samples on a single gel.
  • Achieves higher sensitivity compared to standard protein staining methods.
  • Offers a wider linear range for accurate protein quantitation.

Conclusions:

  • 2D-DIGE represents a substantial improvement for proteome comparison and quantitation.
  • The detailed protocols facilitate the application of 2D-DIGE in research settings.