Multi-material delivery strategies to create deferoxamine-functionalized collagen scaffolds for craniofacial bone repair

Carbodiimide-linked deferoxamine–gelatin in mineralized collagen scaffolds retained 79.6% of drug over 7 days and supported stronger angiogenic signaling in culture.

• Why it matters: CMF bone repair needs coordinated angiogenic and osteogenic activity, but DFO’s small size limits wound retention, weakening its ability to couple blood-vessel formation with mineralization.
• What they did: The study attached DFO to a gelatin backbone using carbodiimide chemistry and quantified 79.6% retention over 7-day culture; it then used a composite delivery combining soluble DFO and gelatin-bound DFO to treat cells for 14 days.
• The result: Compared with soluble DFO alone, the composite approach increased mesenchymal stem cell metabolic activity and enhanced expression of angiogenic genes over 14 days, enabling acellular osteogenic–angiogenic coupling strategies.

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