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Regenerative and Resorbable PLA/HA Hybrid Construct for Tendon/Ligament Tissue Engineering.
M C Araque-Monrós1,2,3, D M García-Cruz2,4, J L Escobar-Ivirico2
1CIBER en Bioingeniería, Biomateriales y Nanomedicina (CIBER-BBN), Valencia, Spain.
Annals of Biomedical Engineering
|November 10, 2019
Summary
This study developed a biodegradable scaffold for tendon and ligament repair. The novel poly-lactic acid/hyaluronic acid construct successfully promoted cell growth and tissue regeneration, offering a promising solution for injuries.
Area of Science:
- Biomaterials Science
- Regenerative Medicine
- Tissue Engineering
Background:
- Tendon and ligament injuries exhibit poor natural healing, with current treatments yielding suboptimal functional recovery.
- Existing regenerative strategies for connective tissues face challenges in achieving complete functional restoration.
- Tissue engineering offers a promising avenue to address the limited regenerative capacity of tendons and ligaments.
Purpose of the Study:
- To develop and evaluate a novel, resorbable, hybrid biomaterial construct for enhanced tendon and ligament tissue regeneration.
- To investigate the potential of a hollow poly-lactic acid braid with embedded cell-carrying microspheres for guided tissue ingrowth.
- To assess the biocompatibility and cell behavior within the construct for effective tendon and ligament repair.
Main Methods:
- Fabrication of a hollow poly-lactic acid braid with embedded poly-lactic acid and hyaluronic acid microspheres, featuring an anti-adherent coating.
- Culture and injection of fibroblasts into the hollow braid construct.
- In vitro culture of the construct for 14 days to evaluate cell migration, proliferation, and adhesion.
Main Results:
- Fibroblasts successfully migrated from the microspheres and adhered uniformly to the poly-lactic acid braid fibers within the construct.
- Homogeneous cell proliferation was observed throughout the interior of the braid.
- The anti-adherent coating effectively prevented cell adhesion on the construct's outer surface, directing regeneration inwards.
Conclusions:
- The developed poly-lactic acid/hyaluronic acid hybrid construct demonstrates significant potential as a biomaterial for tendon and ligament regeneration.
- The construct facilitates controlled cell delivery, migration, and proliferation, promoting endogenous tissue repair.
- This innovative approach offers a promising strategy to improve functional outcomes following tendon and ligament injuries.
