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Enhancing bone tissue engineering with 3D-Printed polycaprolactone scaffolds integrated with tragacanth gum/bioactive
Mahsa Janmohammadi1, Mohammad Sadegh Nourbakhsh2, Marjan Bahraminasab3,4
1Department of Biomedical Engineering, Faculty of New Sciences and Technologies, Semnan University, Semnan, Iran.
Materials Today. Bio
|December 11, 2023
Summary
This study introduces a novel 3D bone scaffold using a polycaprolactone host and bioactive glass guest. The innovative design enhances bone regeneration, offering a promising alternative for bone defect repair.
Area of Science:
- Biomaterials Science
- Regenerative Medicine
- Tissue Engineering
Background:
- Bone defects pose significant clinical challenges, often requiring autografts with limitations.
- Tissue-engineered bone substitutes offer a promising alternative, necessitating advanced scaffold designs.
Purpose of the Study:
- To develop and evaluate an innovative 3D host-guest scaffold for enhanced bone regeneration.
- To assess the physicochemical, mechanical, and biological properties of the novel scaffold.
Main Methods:
- Fabrication of a 3D printed polycaprolactone (PCL) framework (host) and incorporation of tragacanth gum-45S5 bioactive glass (guest).
- Comprehensive evaluation of scaffold bioactivity, including ion release, apatite formation, and biodegradation.
- In vitro cell culture assays to assess cell viability, proliferation, attachment, and osteogenic differentiation.
Main Results:
- Successful integration of the guest component within the PCL host framework, enhancing scaffold strength and bioactivity.
- Demonstrated ion release (Si, Ca, P), surface apatite formation, and controlled biodegradation.
- Significant improvements in cell viability, proliferation, and attachment, with notable enhancement in osteogenic marker expression (osteopontin, osteocalcin) and matrix deposition.
Conclusions:
- The 3D host-guest scaffolds provide robust mechanical support and a conducive micro-environment for osteogenesis.
- These multi-compartment scaffolds show great potential as viable alternatives to autografts for clinical bone defect repair.
