2023 Fiscal Year Final Research Report
Effects of type VI collagen on osteoblasts at early and late dufferentiation stages
Project/Area Number |
21K09260
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Research Category |
Grant-in-Aid for Scientific Research (C)
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Allocation Type | Multi-year Fund |
Section | 一般 |
Review Section |
Basic Section 56020:Orthopedics-related
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Research Institution | Nippon Veterinary and Life Science University |
Principal Investigator |
Soeta Satoshi 日本獣医生命科学大学, 獣医学部, 教授 (90318569)
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Project Period (FY) |
2021-04-01 – 2024-03-31
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Keywords | 骨芽細胞 / VI型コラーゲン / NG2 / TEM8 / 骨膜 |
Outline of Final Research Achievements |
In this study, receptors of type VI collagen (Col6), NG2 and TEM8, were expressed in osteoblasts in the periosteum of rats and cattle femurs. As Col6 is abundant in the periosteum, the results indicate the possibility that Col6 regulates osteoblasts via NG2 and TEM8 in periosteum. In vitro studies using primary osteoblasts cultured on Col6-coating dishes revealed that maturation to calcified matrix producing osteoblasts and osteocytic differentiation were inhibited. NG2 and Col6a3 knockdown using shRNA method decreased alkaline phosphatase activity and mineralization in primary cultured osteoblasts. These results indicated that Col6 regulates osteoblast differentiation and maturation via NG2.
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Free Research Field |
獣医解剖学
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Academic Significance and Societal Importance of the Research Achievements |
本研究によって、いままであまり注目されてなかった骨膜での骨芽細胞の分化や新生骨形成の制御に対するVI型コラーゲンの重要性が明らかになり、緻密骨の形態、新生骨の形成パターン、および最終的な骨径の大きさがどのように決定されるかを理解するための大きな手掛かりが得られるものと考えられる。また、VI型コラーゲンやVI型コラーゲンの分解産物であるエンドトロフィンをマトリックス内に含ませ生体に適用することによって、骨の形態を人為的に制御するための重要な知見が得られる可能性もある。
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