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Related Experiment Video

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Human Adipose Tissue Micro-fragmentation for Cell Phenotyping and Secretome Characterization
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Comprehensive Matrisome Profiling of Human Adipose Tissue for Soft Tissue Reconstruction.

Gretel Major1, Jeremy Simcock2, Abhishek Kumar3

  • 1Department of Orthopaedic Surgery and Musculoskeletal Medicine, Centre for Bioengineering & Nanomedicine, University of Otago, Christchurch, 8011, New Zealand.

Advanced Biology
|November 13, 2023
PubMed
Summary

Investigating the human adipose tissue extracellular matrix (ECM) using mass spectrometry reveals significant protein variations. Age and collection methods influence the matrisome, crucial for soft tissue reconstruction and biomaterial development.

Keywords:
adipose tissuebiomaterialslipoaspiratematrisomeproteomics

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Area of Science:

  • Biomaterials Science
  • Proteomics
  • Tissue Engineering

Background:

  • Effective translation of regenerative medicine research requires accurate understanding of tissue-specific extracellular matrix (ECM).
  • Adipose tissue is increasingly used for soft tissue reconstruction, but variable clinical outcomes necessitate deeper investigation.
  • The adipose tissue matrisome, the complete set of ECM proteins, is not well characterized.

Purpose of the Study:

  • To quantitatively profile the human adipose tissue matrisome using advanced proteomics.
  • To characterize ECM proteins and assess population variation in fat-grafting patients.
  • To identify factors influencing matrisome composition, such as age and collection technique.

Main Methods:

  • Quantitative sequential windowed acquisition of all theoretical fragment ion spectra - mass spectrometry (SWATH-MS) proteomics.
  • Analysis of adipose tissue samples from a cohort of 13 fat-grafting patients.
  • Identification and quantification of extracellular matrix (ECM) proteins.

Main Results:

  • Significant differences in matrisome protein expression were observed across the patient cohort.
  • Patient age and lipoaspirate collection technique were identified as major contributors to matrisome variation.
  • High abundance of basement membrane proteins (collagen IV, heparan sulfate proteoglycan) and fibrillar collagens (I, II) were detected.

Conclusions:

  • This study provides a comprehensive proteomic profile of the human adipose tissue matrisome.
  • Understanding matrisome variation is crucial for improving adipose-derived biomaterials and soft tissue reconstruction outcomes.
  • The findings offer a healthy reference cohort and an experimental pipeline for future biomaterial development.