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Multifunctional magnetic-responsive hydrogels to engineer tendon-to-bone interface.

Elsa D Silva1, Pedro S Babo1, Raquel Costa-Almeida1

  • 13B's Research Group - Biomaterials, Biodegradables and Biomimetics, University of Minho, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine, Guimarães, Portugal; ICVS/3B's - PT Government Associate Laboratory, Braga/Guimarães, Portugal.

Nanomedicine : Nanotechnology, Biology, and Medicine
|June 15, 2017
PubMed
Summary
This summary is machine-generated.

This study developed a photocrosslinkable magnetic hydrogel using methacrylated chondroitin sulfate and platelet lysate for tissue engineering. The magnetic hydrogel demonstrated controlled properties and supported cell growth for tendon-to-bone interface repair.

Keywords:
Co-culture systemFunctionalized SPIONsMagnetic responsive hydrogelsPlatelet lysateTendon-to-bone interface

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Area of Science:

  • Biomaterials Science
  • Tissue Engineering
  • Regenerative Medicine

Background:

  • Photocrosslinkable magnetic hydrogels offer remote controllability for complex tissue interface engineering.
  • Developing functional hydrogels for specific interfaces like tendon-to-bone is crucial in regenerative medicine.

Purpose of the Study:

  • To develop a photocrosslinkable magnetic hydrogel incorporating platelet lysate (PL) for tendon-to-bone interface tissue engineering.
  • To investigate the tunable features and magnetic responsiveness of the developed hydrogel for enhanced tissue regeneration.

Main Methods:

  • Fabrication of methacrylated chondroitin sulfate (MA-CS) hydrogels with iron-based magnetic nanoparticles and platelet lysate.
  • Encapsulation of osteogenically differentiated adipose-derived stem cells and/or tendon-derived cells within the hydrogel.
  • Application of external magnetic fields (EMF) to modulate hydrogel properties and cell behavior.

Main Results:

  • The magnetic hydrogel exhibited controlled swelling, degradation, and PL-derived growth factor release upon EMF application.
  • Encapsulated cells proliferated and expressed relevant bone and tendon markers.
  • EMF stimulation influenced cell morphology and the synthesis of tendon- and bone-like matrix, particularly in co-cultures.

Conclusions:

  • The developed MA-CS magnetic hydrogel is a promising cell carrier for interfacial tissue engineering.
  • EMF provides a non-invasive method to control hydrogel properties and enhance cell-matrix interactions for tendon-to-bone regeneration.