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2023 Fiscal Year Final Research Report

Development of a new bone regeneration method targeting bone tissue macrophage (OsteoMacs)

Research Project

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Project/Area Number 20K09967
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 57030:Conservative dentistry-related
Research InstitutionFukuoka Dental College

Principal Investigator

Anan Hisashi  福岡歯科大学, 口腔歯学部, 病院顧問 (80158732)

Co-Investigator(Kenkyū-buntansha) 松崎 英津子  福岡歯科大学, 口腔歯学部, 教授 (20432924)
Project Period (FY) 2020-04-01 – 2024-03-31
KeywordsPSリポソーム / 生体活性ガラス / M2マクロファージ / 多核巨細胞 / リモデリング / 骨形成 / 骨再生療法
Outline of Final Research Achievements

Effects of a combination of bioactive glass (BAG) and PS liposomes (PSL) on bone repair were investigated using rat calvaria bone defect model. In BAG+PSL group, a number of osteoclast-like cells appeared around BAG, and activation of bone formation was observed earlier compared with that of the BAG alone group. In addition, PSL suppressed the production of inflammatory cytokines, such as TNF-α and IL-6 and slightly increased the production of anti-inflammatory cytokine IL-10 in a macrophage culture system. From the above, it is suggested that PSL may suppress the inflammatory response in bone defects through cells of macrophage series and promote bone tissue remodeling.

Free Research Field

歯科保存学

Academic Significance and Societal Importance of the Research Achievements

骨欠損部における再生のコアとしてBAGとPSLを応用することにより、骨吸収から骨形成に向かうリモデリングに類似した細胞連鎖が惹起され、早期に消失した骨組織の回復が観察された。また、PSLはTNF-αおよびIL-6産生を抑制し、IL-10産生を増加することにより炎症反応を抑制し、修復・治癒へとスイ ッチする可能性が示唆された。超高齢社会における脆弱な骨欠損部に対する治療戦略として、BAGとPSLの応用は新規の歯周組織再生誘導技術の開発に貢献するものと考えられた。

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Published: 2025-01-30  

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