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3D Porous Polycaprolactone with Chitosan-Graft-PCL Modified Surface for In Situ Tissue Engineering.

Johannes Pitts1, Robert Hänsch2, Yvonne Roger3,4

  • 1Institute for Technical Chemistry, Braunschweig University of Technology, 38106 Braunschweig, Germany.

Polymers
|February 13, 2025
PubMed
Summary

This study developed modified Polycaprolactone scaffolds for tissue engineering. These scaffolds enable controlled release of growth factors, showing potential for treating musculoskeletal disorders.

Keywords:
PCLPEOTGF releasechitosan-graft-PCLin situ tissue engineeringin vitro cell testingmacroporous scaffoldpolymer blendingporositysucrosesurface modificationsurface potential

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Area of Science:

  • Biomaterials Science
  • Tissue Engineering
  • Regenerative Medicine

Background:

  • Current tissue repair relies heavily on physical surgical methods.
  • Biodegradable implants with controlled protein delivery can significantly advance musculoskeletal disorder treatments.

Purpose of the Study:

  • To fabricate and modify Polycaprolactone (PCL) scaffolds for enhanced tissue regeneration.
  • To create a platform for nanoparticulate delivery of bioactive proteins.

Main Methods:

  • Fabrication of 3D macroporous PCL scaffolds via blending, annealing, and leaching.
  • Modification of scaffolds with chitosan-graft-Polycaprolactone (CS-g-PCL) copolymers via ring-opening polymerization.
  • In vitro cell testing for biocompatibility and Layer-by-Layer coating with alginate and TGF-β3-loaded nanoparticles.

Main Results:

  • Scaffolds with diverse morphologies were produced by varying blending components (PEO, NaCl, sucrose) and processing conditions.
  • CS-g-PCL modification increased scaffold hydrophilicity and provided a platform for nanoparticulate delivery.
  • Successful in vitro release of TGF-β3 was observed, indicating potential for cell differentiation.

Conclusions:

  • Modified PCL scaffolds offer a promising approach for advanced tissue engineering.
  • The developed system demonstrates potential for therapeutic applications in treating musculoskeletal disorders through controlled growth factor delivery.