2007 Fiscal Year Final Research Report Summary
Bone regeneration with degradable hydrogels and genetically modified, recombinant human BMP-2 with two additional repeats of the heparin-binding domain.
| Project/Area Number |
18592125
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
補綴理工系歯学
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| Research Institution | Okayama University |
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Principal Investigator |
NAWACHI Kumiko Okayama University, Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Assistant Professor (10379787)
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| Co-Investigator(Kenkyū-buntansha) |
KUBOKI Takuo Okayama University, Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Professor (00225195)
KANYAMA Manabu Okayama University, University Hospital of Medicine and Dentistry, Senior Assistant Professor (90294420)
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| Project Period (FY) |
2006 – 2007
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| Keywords | BMP-2 / gelatin hydrogels / bone regeneration / implant / periodontal disease / carrier / large animal / Escherichia coli |
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| Research Abstract |
A genetically modified, recombinant human bone morphogenetic proteirr2 with two additional repeats of the heparin-binding domain, derived from E coli (rhBMP-2 T4) has shown a stronger osteoinductivity than wild-type rhBMP-2. The aim of this study was to find a suitable carrier fix rhBMP-2 T4 in order to enhance bone regeneration. The in vitro and in vivo release profiles of^<125>I-labelled rhBMP-2 T4 incorporated into 6 kinds of gelatin hydrogels with different isoelectric point (IEP) were investigated. As a result, the higher the IEP was, the longer the rhBMP2 T4 radioactivity was preserved. To elucidate the osteoinductivity difference of the rhBMP2 T4/hydrogels composites, two high IEP gelatin hydrogels: a basic gelatin hydrogel (PI9) and a modified PI9 with spermine (SM), were implanted at critical-sized defects in the rat calvaria. The mean normalized radio-opacity against the surrounding intact bone in the PI9 group was significantly higher than those in the SM (p<0.001) and the control (without carrier) groups (p<0.001). The observed radio-opacity increase in the PI9 group was clearly related to the bone formation at the defect. Therefore, we concluded that PI9 is a suitable carrier for the rhBMP-2 T4 to enhance bone regeneration.
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Research Products
(11 results)
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[Journal Article] Basic gelatin hydrogels enhances the effect of mutant BMP-22007
Author(s)
K., Shimono, M., Kanyama, M., Ono, Y., Kimura, W., Sebald, K., Sugama, T., Kuboki
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Journal Title
Journal of Dental Research 86
Pages: 1787
Description
「研究成果報告書概要(欧文)」より
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[Presentation] Basic gelatin hydrogel promoted bone regeneration by mutant BMP-22007
Author(s)
K., Shimono, M., Ono, Y., Kimura, M., Kanyama, W., Sebald, T., Kuboki
Organizer
12th Meeting of the International College of Prosthodontists Fukuoka
Year and Date
2007-09-06
Description
「研究成果報告書概要(欧文)」より
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[Presentation] Basic gelatin hydrogels enhances the effect of mutant BMP-22007
Author(s)
K., Shimono, M., Oshima, K., Nawachi, M., Kanyama, W., Sebald, Y., Tabata, K., Sugama, T., Kuboki
Organizer
Summer School, Japanese Prosthodontic Society Chugoku-Shikoku Branch
Place of Presentation
Tokushima(Naruto)
Year and Date
2007-08-31
Description
「研究成果報告書概要(欧文)」より
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[Presentation] Basic gelatin hydrogels enhances the effect of mutant BMP-22003
Author(s)
K., Shimono, M., Kanyama, M., Ono, Y., Kimura, W., Sebald, K., Sugama, T., Kuboki
Organizer
85th General Session and exhibition of the IADR
Place of Presentation
New Orleans
Year and Date
2003-03-23
Description
「研究成果報告書概要(欧文)」より
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