title: Synthesis of enzymatically-gellable carboxymethylcellulose for biomedical applications.
abstract: We synthesized a carboxymethylcellulose with phenol moieties by covalently incorporating tyramine into carboxymethylcellulose using aqueous-phase carbodiimide activation chemistry. The resulting hydrogel was obtained from an aqueous solution of the conjugate via the horseradish peroxidase-catalyzed oxidation reaction of phenols by consuming H(2)O(2), where the gelation speed depended on the concentrations of enzyme and H(2)O(2). The viability of the mammalian cells enclosed within the hydrogel prepared from 1.5% (w/v) conjugate solution containing 5 units/ml horseradish peroxidase and 1 mM H(2)O(2), was 80% after 24 h. These results demonstrate that this carboxymethylcellulose with phenol moieties has potential for biomedical applications including tissue-engineering.
authors: Department of Chemical Engineering, Faculty of Engineering, Kyushu University, 744 Motooka, Fukuoka, Japan.
authors: Yuko
authors: Y
authors: Ogushi
authors: Shinji
authors: S
authors: Sakai
authors: Koei
authors: K
authors: Kawakami
mesh_terms: D000818:Animals; D001672:Biocompatible Materials / Q000737:chemistry* / Q000378:metabolism / Q000633:toxicity; D002266:Carboxymethylcellulose Sodium / Q000737:chemistry* / Q000378:metabolism / Q000633:toxicity; D006735:Horseradish Peroxidase / Q000737:chemistry; D020136:Hydrogel, Polyethylene Glycol Dimethacrylate / Q000737:chemistry* / Q000378:metabolism / Q000633:toxicity; D008422:Materials Testing; D019800:Phenol / Q000737:chemistry*; D023822:Tissue Engineering; D014439:Tyramine / Q000737:chemistry
chemical_list: D001672:Biocompatible Materials; D020136:Hydrogel, Polyethylene Glycol Dimethacrylate; D019800:Phenol; D006735:Horseradish Peroxidase; D002266:Carboxymethylcellulose Sodium; D014439:Tyramine