Macromolecular Bioscience 2015-09-01

Synergistic Effects of SDF-1α and BMP-2 Delivery from Proteolytically Degradable Hyaluronic Acid Hydrogels for Bone Repair.

Julianne L Holloway, Henry Ma, Reena Rai, Kurt D Hankenson, Jason A Burdick

Index: Macromol. Biosci. 15 , 1218-23, (2015)

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Abstract

In order to achieve bone repair, bone morphogenetic protein-2 (BMP-2) is typically delivered in non-physiological doses and can result in significant adverse side effects. To reduce the amount of BMP-2 necessary for bone formation, we delivered a known chemokine (stromal cell derived factor-1α, SDF-1α) in combination with BMP-2 using proteolytically degradable hydrogels. A critical-sized calvarial defect was used to determine the effect of biomolecule delivery on bone formation in vivo. The treatment group with combined SDF-1α and BMP-2 hydrogel delivery showed significantly higher bone formation when compared to hydrogels loaded with the same BMP-2 or SDF-1α concentrations alone, suggesting the combined delivery of both biomolecules synergistically improves osteogenesis. © 2015 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

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