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Treatment of Ligament Constructs with Exercise-conditioned Serum: A Translational Tissue Engineering Model
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Chemical Optimization for Functional Ligament Tissue Engineering.

Chun-Wei Chang1, Jian-Hong Lee1, Pen-Hsiu Grace Chao1

  • 1Department of Biomedical Engineering, School of Engineering and School of Medicine, National Taiwan University, Taipei, Taiwan.

Tissue Engineering. Part A
|August 14, 2019
PubMed
Summary
This summary is machine-generated.

This study engineered functional ligament grafts using optimized chemical treatments for electrospun scaffolds. These methods improve cell distribution, matrix production, and construct size for better tissue regeneration.

Keywords:
cell migrationelectrospinningfibringrowth factorligament and tendontissue engineering

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Area of Science:

  • Biomaterials Engineering
  • Tissue Engineering
  • Regenerative Medicine

Background:

  • Electrospun materials offer biomimetic properties for tissue engineering but face challenges like poor cell distribution and limited construct size.
  • Existing methods often struggle with homogeneous cell infiltration and adequate matrix deposition, hindering functional tissue development.
  • Addressing these limitations is crucial for creating effective tissue-engineered grafts.

Purpose of the Study:

  • To develop synergistic chemical modifications of electrospun scaffolds to overcome limitations in tissue engineering.
  • To enhance cell infiltration, proliferation, and matrix elaboration for functional tissue construct development.
  • To engineer a robust ligament graft with improved size and mechanical properties.

Main Methods:

  • Utilized type I collagen coating via polydopamine treatment to promote homogeneous cell infiltration into electrospun scaffolds.
  • Applied sequential treatments with fibroblast growth factor and transforming growth factor-β to enhance cell proliferation and matrix deposition.
  • Employed lamination of fibrous sheets with fibrin gel to increase construct size and mechanical functionality.

Main Results:

  • Type I collagen coating significantly improved cell distribution within the scaffold in one week.
  • Growth factor treatments increased matrix deposition, upregulating lysyl oxidase and downregulating matrix metalloproteinase-1.
  • Lamination with fibrin gel enhanced construct size, collagen deposition, and mechanical properties.

Conclusions:

  • Synergistic chemical optimizations provide a robust strategy for functional tissue engineering, particularly for ligament grafts.
  • These approaches address key challenges in scaffold development, including cell distribution, matrix elaboration, and construct size.
  • The presented methods are adaptable for engineering various other tissues, promoting homogeneous construct development.