2023 Fiscal Year Final Research Report
Drug Development of Early Osteoarthritis Targeting Inhibition of Novel Hyaluronidase KIAA1199 Activity
Project/Area Number |
20K18060
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Research Category |
Grant-in-Aid for Early-Career Scientists
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Allocation Type | Multi-year Fund |
Review Section |
Basic Section 56020:Orthopedics-related
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Research Institution | Nagoya University |
Principal Investigator |
Koike Hiroshi 名古屋大学, 医学部附属病院, 医員 (80846080)
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Project Period (FY) |
2020-04-01 – 2024-03-31
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Keywords | 変形性関節症 / ヒアルロン酸分解酵素 / KIAA1199 / 関節軟骨 |
Outline of Final Research Achievements |
In our research, we analyzed the molecular weight of HA extracted from articular cartilage. The results indicated that the reduction in molecular weight was inhibited in the DrugX-treated group. Furthermore, we developed an explant culture model using bovine articular cartilage stimulated with IL-1β. In the DrugX-treated group, glycosaminoglycans were preserved, and both the immunostaining and molecular weight of HA were maintained. These findings demonstrate the potential of DrugX in preserving cartilage integrity in OA. The outcomes of this study have been published in the International Journal of Molecular Sciences, with the title "Development of Therapeutic Agent for Osteoarthritis via Inhibition of KIAA1199 Activity: Effect of Ipriflavone In Vivo," Int. J. Mol. Sci. 2023, 24(15), 12422.
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Free Research Field |
整形外科
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Academic Significance and Societal Importance of the Research Achievements |
早期変形性関節症に対して、関節軟骨の変性を予防する薬剤はいまだ開発されていない。本研究では安全に使用できる骨粗しょう症治療薬であるイプリフラボンに、オフラベル効果として関節軟骨、関節滑膜の炎症や、関節軟骨中のヒアルロン酸の分解に寄与するKIAA1199の活動を抑制することにより、関節軟骨の破壊、ひいてはOAの進行を予防できる可能性が示唆された。まだまだ基礎研究段階ではあるが、早期変形性関節症患者にイプリフラボンを投与することにより、変形性関節症の進行、人工関節への移行を予防できる可能性があり、中高齢者の疼痛、ADL低下を防ぎ、健康寿命の延伸に寄与できる可能性が期待される。
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