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Related Concept Videos

Proteomics01:33

Proteomics

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A proteome is the entire set of proteins that a cell type produces. We can study proteomes using the knowledge of genomes because genes code for mRNAs, and the mRNAs encode proteins. Although mRNA analysis is a step in the right direction, not all mRNAs are translated into proteins.
Proteomics is the study of proteomes' function. It involves the large-scale systematic study of the proteome to denote the protein complement expressed by a genome. Scientist Mark Wilkins coined the term...
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Related Experiment Video

Updated: Nov 23, 2025

Skeletal Muscle Gender Dimorphism from Proteomics
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Insight into molecular profile changes after skeletal muscle contusion using microarray and bioinformatics analyses.

Na Li1, Ru-Feng Bai2,3, Chun Li1

  • 1School of Forensic Medicine, Shanxi Medical University, Jinzhong 030604, Shanxi, China.

Bioscience Reports
|January 5, 2021
PubMed
Summary

Muscle injury healing involves complex gene expression changes. This study reveals similar gene profiles in mild and severe contusions, identifying potential markers for wound age and highlighting metabolic process shifts during repair.

Keywords:
Skeletal muscle healingbioinformatics analysisgene expression profilemicroarraywound age

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Area of Science:

  • Biomedical research
  • Molecular biology
  • Regenerative medicine

Background:

  • Muscle trauma is common, but molecular mechanisms of healing are not fully understood.
  • Healing complexity varies with injury severity.
  • Investigating gene expression provides insights into muscle repair.

Purpose of the Study:

  • To investigate gene expression profiles in mild and severe muscle contusions.
  • To elucidate molecular mechanisms of muscle repair.
  • To identify potential biomarkers for wound age estimation.

Main Methods:

  • Microarray analysis of differentially expressed genes (DEGs) in rat muscle contusions.
  • Analysis of coexpressed genes in mild and severe injury groups.
  • Functional and temporal clustering of gene expression patterns.

Main Results:

  • Identified 2844 DEGs in mild and 2298 DEGs in severe contusions.
  • Discovered similar gene profiles and time-dependent expression patterns between injury severities.
  • Found down-regulation of oxidative phosphorylation (OXPHOS) genes at 24-48 hours post-injury.

Conclusions:

  • Gene expression profiles in muscle contusions show similarities regardless of severity.
  • Identified time-dependent gene expression patterns useful for wound age estimation.
  • Down-regulation of OXPHOS genes during repair is a novel finding.