Silk Fibroin as a Functional Biomaterial for Tissue Engineering

Area of Science:

• Biomaterials Science
• Regenerative Medicine
• Tissue Engineering

Background:

• Tissue engineering (TE) aims to regenerate or replace damaged tissues using cells, scaffolds, and growth factors.
• Scaffold materials are crucial templates for tissue formation in TE.
• Silk fibroin (SF) is a natural protein with desirable mechanical properties, biodegradability, biocompatibility, and bioresorbability for TE.

Purpose of the Study:

• To review the physicochemical and mechanical properties of silk fibroin (SF).
• To explore various SF-based scaffolds developed for tissue engineering applications.
• To highlight the applications of SF scaffolds in regenerating bone, cartilage, ligament, tendon, skin, and tympanic membranes.

Main Methods:

• SF is processed into various formats like films, mats, hydrogels, and sponges.
• Fabrication techniques include spin coating, electrospinning, freeze-drying, and crosslinking.
• Advanced methods like micro-patterning and bio-printing are explored for complex SF scaffolds.

Main Results:

• SF can be fabricated into diverse scaffold structures with tunable properties.
• SF-based scaffolds demonstrate potential in various TE applications, including bone and cartilage regeneration.
• The review details recent advancements in SF scaffold development and their functional outcomes.

Conclusions:

• Silk fibroin is a versatile biomaterial for developing advanced tissue engineering scaffolds.
• SF scaffolds offer significant potential for clinical applications in tissue and organ regeneration.
• Further research is needed to address challenges and optimize SF-based TE strategies.