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The Development of Tissue Engineering Scaffolds Using Matrix from iPS-Reprogrammed Fibroblasts.

Francesco Santarella1, Fergal J O'Brien1,2,3, Jonathan A Garlick4

  • 1Tissue Engineering Research Group (TERG), Royal College of Surgeons in Ireland (RCSI), Dublin 2, Ireland.

Methods in Molecular Biology (Clifton, N.J.)
|March 23, 2021
PubMed
Summary

This study developed novel collagen scaffolds enriched with extracellular matrix from induced pluripotent stem cell-derived fibroblasts. These enhanced scaffolds show promise for improving diabetic foot ulcer healing and skin regeneration.

Keywords:
Collagen-glycosaminoglycanECMFibroblastsFreeze-dryScaffoldsiPS

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Area of Science:

  • Regenerative Medicine
  • Biomaterials Science
  • Wound Healing Research

Background:

  • Diabetic foot ulcers (DFU) present significant healing challenges due to abnormal extracellular matrix (ECM), poor vascularization, and inflammation.
  • Current treatments like debridement and topical therapies have limitations.
  • Existing FDA-approved collagen-glycosaminoglycan scaffolds for DFU can be improved with functionalization.

Purpose of the Study:

  • To develop a novel tissue engineering scaffold for enhanced skin wound healing, specifically for diabetic foot ulcers.
  • To functionalize collagen scaffolds by incorporating extracellular matrix from induced pluripotent stem cell-derived fibroblasts (post-iPSF).
  • To investigate the potential of these enhanced scaffolds to promote skin regeneration.

Main Methods:

  • Cultured matrix from post-iPSF.
  • Developed collagen-based scaffolds incorporating this post-iPSF derived matrix.
  • Characterized scaffold enrichment with specific ECM components and growth factors.

Main Results:

  • Scaffolds activated with post-iPSF derived ECM were enriched with glycosaminoglycans (GAGs), collagen Type III, fibronectin, and vascular endothelial growth factor (VEGF).
  • Post-iPSF demonstrated increased ECM production and pro-angiogenic properties.
  • The developed technique offers a method to create functionalized scaffolds for tissue engineering.

Conclusions:

  • The developed collagen scaffolds, enriched with post-iPSF derived ECM, hold potential for enhancing skin regeneration and wound healing.
  • This approach offers a promising strategy for improving treatments for challenging wounds like diabetic foot ulcers.
  • The technique may be adaptable for other tissue engineering applications.