Researchers at King’s College London Test Wool-Based Keratin for Bone Repair

In a groundbreaking study, researchers at King’s College London have demonstrated that keratin extracted from wool can effectively support the regeneration of damaged bone in living animal models. Dr. Sherif Elsharkawy, from the university’s Faculty of Dentistry, Oral & Craniofacial Sciences, expressed excitement over the successful application of a wool-based material to facilitate bone repair.

Sustainable Source for Medical Applications

The findings not only highlight the potential medical applications of wool but also emphasize its sustainability benefits. Wool is a naturally derived material often discarded as waste by the farming industry, presenting an opportunity for it to serve as both a renewable and scalable resource in medical practices.

Traditionally, collagen has been used as the gold standard scaffold in regenerative medicine. However, collagen has limitations, including relative weakness, rapid degradation, and complicated extraction processes. Dr. Elsharkawy noted, “From a research perspective, this is a major milestone. It positions keratin as a potential new class of regenerative biomaterial that could challenge the long-standing reliance on collagen.”

Testing the Effectiveness of Wool Keratin

The research team created membranes from chemically treated keratin to enhance stability and durability. Initial laboratory tests with human bone cells showed healthy growth on the keratin membranes, prompting researchers to progress to animal testing. The membranes were implanted in rats with sizeable skull defects that would normally prevent healing. Over subsequent weeks, the team monitored the effectiveness of the membranes in promoting new bone growth.

Results indicated a significant difference between the keratin and collagen scaffolds. While collagen membranes generated a greater total volume of bone, the bone formed with keratin scaffolds was more structurally secure and organized, closely resembling natural bone. The keratin membranes also maintained their stability throughout the healing process, integrating seamlessly with surrounding tissue.