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Precise Engineering of Growth Factor Presentation Using Extracellular Microenvironment-Mimicking Microfluidic
Mohammad Mahdi Hasani-Sadrabadi1,2, Weihao Yuan1, Luiza de Almeida Queiroz Ferreira1,3
1Weintraub Center for Reconstructive Biotechnology, Section of Prosthodontics, School of Dentistry, University of California, Los Angeles, California 90095, United States.
ACS Biomaterials Science & Engineering
|February 13, 2024
Summary
Researchers developed novel microcarriers for controlled delivery of growth factors (GFs) in tissue engineering. These microparticles offer sustained, localized GF release for enhanced regenerative effects.
Area of Science:
- Biomaterials Science
- Tissue Engineering
- Drug Delivery Systems
Background:
- Precise spatiotemporal control of growth factor (GF) delivery remains a challenge in tissue engineering.
- Developing advanced delivery systems is crucial for maximizing regenerative potential.
Purpose of the Study:
- To engineer microscale carriers for high-content, sustained, and localized delivery of GFs.
- To fine-tune particle characteristics and release kinetics for biomimetic signaling.
Main Methods:
- Utilized microfluidic systems and bioconjugation techniques for particle fabrication.
- Employed a 3D micromixer platform for controlled core-shell particle formation.
- Investigated polymer-peptide conjugates for tunable release and degradation.
Main Results:
- Developed microparticles capable of sustained GF release for up to 28 days.
- Chitosan shells effectively prevented burst release, enabling sustained delivery for up to 10 days.
- Demonstrated versatility using human bone morphogenetic protein-2, VEGF, and SDF-1α.
Conclusions:
- The novel microcarrier system provides precise control over GF presentation for tissue regeneration.
- This approach can generate libraries of GF-loaded particles with tailored release profiles for complex in vivo processes.
- The biomimetic signals enhance regenerative effects by mimicking developmental biology cues.
