A scientific review published by researchers from Singapore in Bio-Design and Manufacturing maps local advances in biofabrication, highlighting the use of sustainable biomaterials such as human hair keratin for 3D bioprinting. The study analyzes how these materials, along with aquaculture by-products and plant polysaccharides, are integrated into manufacturing technologies to create cellular scaffolds and functional tissues intended for regenerative medicine.
From hair waste to functional cellular scaffolds 🧬
The Singapore team has identified keratin extracted from human hair as an exceptional biopolymer for tissue engineering due to its biocompatibility and ability to form hydrogels. These hydrogels are processed via 3D bioprinting to generate porous structures that mimic the extracellular matrix, enabling stem cell adhesion and proliferation. Potential clinical applications include bone regeneration, cartilage repair, and chronic wound healing. However, the main bottleneck remains the high cost of the keratin extraction and purification process, which limits its commercial scalability.
The dilemma of sustainability versus cost 💰
The review emphasizes that the convergence between biofabrication and biomanufacturing is inevitable, combining biological systems with digital automation. However, the economic challenge persists: while hair keratin offers an almost unlimited source and reduces waste, its processing remains expensive. Overcoming this barrier through more efficient extraction techniques or low-cost enzymatic processes could position Singapore as a global hub in sustainable regenerative medicine, where waste becomes the raw material of the future.
How does the integration of recycled hair keratin in 3D bioprinting affect the viability and functionality of tissue scaffolds in regenerative medicine applications
(PS: and if the printed organ doesn't beat, you can always add a little motor... just kidding!)