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Related Experiment Video

Updated: Aug 23, 2025

TMT Sample Preparation for Proteomics Facility Submission and Subsequent Data Analysis
07:44

TMT Sample Preparation for Proteomics Facility Submission and Subsequent Data Analysis

Published on: June 8, 2020

12.8K

Protein sample preparation for tissue distribution study.

Linjia Cheng1,2, Yilu Xu3,2, Kangling Zhu4

  • 1Center for Life Sciences, School of Life Sciences, Yunnan University, Kunming, China.

Proteomics. Clinical Applications
|November 5, 2022
PubMed
Summary

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This summary is machine-generated.

A new method ensures high-quality protein sample preparation from animal tissues, enabling accurate analysis of protein distribution and expression levels for potential disease biomarkers.

Area of Science:

  • Biochemistry
  • Molecular Biology
  • Proteomics

Background:

  • Understanding protein distribution and expression across tissues is crucial for elucidating protein function.
  • Existing methods for protein sample preparation often face challenges with degradation, modification, and contamination.
  • A need exists for a universally applicable, high-yield protein extraction method for diverse animal tissues.

Purpose of the Study:

  • To develop a robust and broadly applicable method for preparing high-quality protein samples from animal tissues.
  • To overcome common issues in protein sample preparation, including degradation, modification, and interference from other cellular components.
  • To enable accurate quantification of protein content based on equal wet tissue mass for reliable expression analysis.

Main Methods:

Keywords:
TCA precipitationprotein analysesprotein distribution in tissuesample preparationsonication

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Last Updated: Aug 23, 2025

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  • Utilized 2x SDS Sample Buffer for protein dissolution and stability.
  • Employed sonication to aid in tissue homogenization.
  • Applied trichloroacetic acid precipitation to isolate and purify proteins, minimizing contamination.

Main Results:

  • Successfully developed a simple, reproducible, and broadly applicable method for protein sample preparation from most animal tissues.
  • The method effectively prevents protein degradation and modification during sample processing.
  • Achieved high-quality protein samples, suitable for various downstream analyses, with protein content represented by equal wet tissue mass.

Conclusions:

  • The developed method provides high-quality protein samples amenable to tissue distribution analysis via Western blotting, silver/Coomassie staining, and proteomics.
  • This technique overcomes limitations of previous methods, offering a reliable approach for studying protein expression patterns.
  • Findings contribute to the identification of potential biomarkers and therapeutic targets for diseases.