2023 Fiscal Year Final Research Report
Impact of Microenvironmental Acidification via pH-Sensing Receptors on Bone Metabolism and Lifespan
Project/Area Number |
20K08879
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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 54040:Metabolism and endocrinology-related
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Research Institution | Gunma University |
Principal Investigator |
Mogi Chihiro 群馬大学, 生体調節研究所, 助教 (00375528)
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Project Period (FY) |
2020-04-01 – 2024-03-31
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Keywords | pH / Gタンパク質共役型受容体 / 骨代謝 |
Outline of Final Research Achievements |
The bone mineral density is regulated by osteoclastic bone resorption and osteoblastic mineralization. It is well known that extracellular factors like hormones and cytokines alter osteoclast's and osteoblast's function, but it isn’t known how extracellular pH (the concentration of hydrogen ions) affect to the bone mineral metabolism. Proton-sensing G-protein coupled receptors including OGR1, GPR4, TDAG8, are expressed in bone cells. This study aimed to clarify how these pH receptors regulate the balance of bone resorption and mineralization and lifespan in whole-body level using mice and fish.
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Free Research Field |
骨代謝学
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Academic Significance and Societal Importance of the Research Achievements |
高齢化社会において運動機能障害は現代の日本が抱える大きな問題である。その要因として加齢による骨密度の低下と筋肉の減少(サルコペニア)は解決すべき課題である。による局所的な炎症などを原因とした細胞外酸性化を感知するpH受容体と骨代謝の関係、また加齢により減少する筋肉に関する本研究の成果はこれらの問題の解決方法の基礎的な知見を提供するものである。
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