Enzymatic mineralization of hydrogels for bone tissue engineering by incorporation of alkaline phosphatase.

Enzymatic mineralization of hydrogels for bone tissue engineering by incorporation of alkaline phosphatase.
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DOI:
10.1002/mabi.201100501
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发表时间:
2012-08
影响因子:
4.6
通讯作者:
Leeuwenburgh, Sander C. G.
Leeuwenburgh, Sander C. G.
中科院分区:
工程技术3区
文献类型:
--
作者:
Douglas, Timothy E. L.;Messersmith, Philip B.;Chasan, Safak;Mikos, Antonios G.;de Mulder, Eric L. W.;Dickson, Glenn;Schaubroeck, David;Balcaen, Lieve;Vanhaecke, Frank;Dubruel, Peter;Jansen, John A.;Leeuwenburgh, Sander C. G.

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Alkaline Phosphatase (ALP), an enzyme involved in mineralization of bone, was incorporated into three hydrogel biomaterials to induce their mineralization with calcium phosphate (CaP). These were collagen type I, a mussel protein-inspired adhesive consisting of PEG substituted with catechol groups, cPEG, and the PEG-fumaric acid copolymer OPF. After incubation in calcium glycerophosphate (Ca-GP) solution, FTIR, EDS, SEM, XRD, SAED, ICP-OES and von Kossa staining confirmed CaP formation. The amount of mineral formed decreased in the order cPEG > collagen > OPF. Mineral:polymer ratio decreased in the order collagen > cPEG > OPF. Mineralization increased Young’s modulus, most profoundly for cPEG. Such enzymatically mineralized hydrogel-CaP composites could find application as bone regeneration materials.
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