Advanced Platelet Lysate Aerogels: Biomaterials for Regenerative Applications

Area of Science:

• Biomaterials Science
• Regenerative Medicine
• Tissue Engineering

Background:

• Human platelet lysate (HPL) is rich in growth factors, with potential applications in regenerative medicine.
• Current liquid or gel forms of HPL have limitations in stability and handling.
• A need exists for improved HPL formulations for effective tissue engineering.

Purpose of the Study:

• To develop dry, porous aerogels from HPL hydrogel.
• To utilize an environmentally friendly supercritical CO2-based shaping process.
• To create a stable and manageable material for tissue engineering and regenerative medicine.

Main Methods:

• HPL hydrogel was shaped into aerogels using supercritical CO2.
• Characterization of aerogel structure, mechanical properties, and water absorption.
• In vitro assessment of growth factor release, cell metabolic activity, migration, adhesion, and proliferation.

Main Results:

• Aerogels maintained a 3D structure with significant mechanical robustness and improved manageability.
• High water absorption capacity (87% of weight in 120 min) was observed.
• Sustained release of growth factors supported fibroblast metabolic activity, endothelial cell migration, and fibroblast adhesion/proliferation.

Conclusions:

• The developed HPL aerogels are stable, easy to handle, and possess excellent water absorption.
• These aerogels serve as effective cell culture matrices and growth factor delivery systems.
• The findings highlight the potential of HPL aerogels for diverse tissue regeneration strategies and practical regenerative medicine applications.