The development of cell-adhesive hydrogel for 3D printing  

作　　者：Kenichi Arai Yoshinari Tsukamoto Hirotoshi Yoshida Hidetoshi Sanae Tanveer Ahmad Mir Shinji Sakai Toshiko Yoshida Motonori Okabe Toshio Nikaido Masahito Taya Makoto Nakamura 

机构地区：[1]Graduate School of Science and Engineering for Research,University of Toyama,Toyama,Japan [2]Department of Regenerative Medicine and Biomedical Engineering,Saga University,Saga,Japan [3]Department of Materials Science and Engineering,Graduate School of Engineering Science,Osaka University,Osaka,Japan [4]Department of Regenerative Medicine,Graduate School of Medicine and Pharmaceutical Sciences,University of Toyama,Toyama,Japan

出　　处：《International Journal of Bioprinting》2016年第2期95-104,共10页国际生物打印期刊

摘　　要：Biofabrication has gained tremendous attention for manufacturing functional organs or tissues.To fabricate functional organs or tissues,it is necessary to reproduce tissue-specific micro to macro structures.Previously,we developed a custom-made 3D-bioprinter with the capability to print and fabricate 3D complicated hydrogel structures composed of living cells.Through the gelation reaction,fine and complicated 3D gel structures can be fabricated via layer by layer printing.Alginate hydrogel has been used mainly due to its good fabricating properties.However,it is not a reliable platform for tissue regeneration because of its inadequate cell-adhesiveness.Therefore,our laboratory is interested to explore more suitable hydrogels for bioprinting and 3D tissue fabrication.In this study,we tried to fabricate 3D gel structures with enough cell-adhesive properties.We focused on hydrogel formation through enzymatic reaction by incorporating materials bearing phenolic hydroxyl moieties and horseradish peroxidase.We examined Alg-Ph and Alg-Ph/Gelatin-Ph gels.We used a mixed solution of applied materials as bioink and printed into H2O2 solution.We successfully fabricated the 3D gel sheet structures including fibroblasts cultures.Fibroblast proliferation and viability were also observed in the 3D gel sheet for more than one week.In conclusion,the hydrogel obtained through enzymatic reaction is a biocompatible bioink material which can be applied to fabricate 3D cell-adhesive gel structures using a 3D-bioprinter.

关 键 词：BIOMATERIALS 3D-bioprinter BIOFABRICATION 

分 类 号：O63[理学—高分子化学]