Fibrin as a delivery system in wound healing tissue engineering applications

Area of Science:

• Biomaterials Science
• Tissue Engineering
• Regenerative Medicine

Background:

• Fibrin, a key clotting protein, is used as a tissue sealant and hemostasis agent.
• Fibrin serves as a promising scaffold for delivering therapeutic agents in tissue engineering.
• Growth factors (GFs) are crucial for wound healing but face rapid in vivo degradation, limiting their clinical application.

Purpose of the Study:

• To review the use of fibrin as a delivery vehicle for growth factors (GFs).
• To detail strategies for controlling GF release from fibrin matrices to enhance tissue regeneration.
• To discuss recent advancements in dual and sequential delivery systems.

Main Methods:

• Review of literature on fibrin-based growth factor delivery systems.
• Analysis of strategies including bi-domain peptides, plasmin degradation sequences, and heparin incorporation.
• Examination of novel approaches like co-delivery of cells and GFs or sequential release of multiple GFs.

Main Results:

• Fibrin hydrogels protect GFs from degradation, prolonging their therapeutic effect.
• Modified fibrin compositions allow for tunable release kinetics of incorporated GFs.
• Advanced strategies enable controlled spatiotemporal delivery of multiple therapeutic agents.

Conclusions:

• Fibrin-based delivery systems offer a viable strategy to overcome GF degradation in vivo.
• Tailoring fibrin matrix properties and incorporating specific sequences can optimize GF release profiles.
• Further research into advanced delivery systems holds significant potential for regenerative medicine and wound healing applications.