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Related Experiment Video

Updated: Jan 2, 2026

2 in 1: One-step Affinity Purification for the Parallel Analysis of Protein-Protein and Protein-Metabolite Complexes
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Lysate Preparation for Reverse Phase Protein Arrays.

Karl-Friedrich Becker1

  • 1Technical University of Munich, Munich, Germany. kf.becker@tum.de.

Advances in Experimental Medicine and Biology
|December 11, 2019
PubMed
Summary
This summary is machine-generated.

Preparing protein lysates is crucial for reliable reverse phase protein array (RPPA) analysis from diverse samples like tissues. This chapter details optimal lysate preparation methods, emphasizing human tissues and new ISO standards for reproducible results.

Keywords:
FFPEFrozenISOInternational standardProtein isolationProtein lysateRPPATissue

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Area of Science:

  • Biochemistry
  • Molecular Biology
  • Proteomics

Background:

  • Reverse phase protein arrays (RPPA) enable high-throughput proteomic analysis.
  • RPPA is compatible with various sample types, including cell lines, serum, and tissues (frozen, FFPE).
  • Lysate preparation is a critical step influencing RPPA data reliability.

Purpose of the Study:

  • To describe standardized methods for preparing protein lysates for RPPA analysis.
  • To highlight challenges in lysate preparation, such as solubilization and preventing protein degradation.
  • To focus on human tissue samples and incorporate recent ISO standards for the preanalytical phase.

Main Methods:

  • Detailed protocols for protein lysate preparation from human tissue samples.
  • Consideration of sample types: frozen tissues, FFPE tissues, cell lines, serum, and fine needle aspirates.
  • Emphasis on adherence to preanalytical standards, including ISO guidelines.

Main Results:

  • Established protocols ensure complete protein solubilization.
  • Methods minimize chemical/enzymatic protein modifications and degradation.
  • Consistent lysate quality is achievable across diverse sample matrices.

Conclusions:

  • Optimized lysate preparation is essential for reproducible and reliable RPPA data.
  • Adherence to standardized protocols and ISO guidelines enhances preanalytical phase quality.
  • The described methods provide a foundation for robust proteomic analysis using RPPAs.