| Project/Area Number |
25463196
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Orthodontics/Pediatric dentistry
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| Research Institution | Health Sciences University of Hokkaido |
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Principal Investigator |
okayama miki 北海道医療大学, 歯学部, 助教 (30382500)
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| Co-Investigator(Kenkyū-buntansha) |
田隈 泰信 北海道医療大学, 歯学部, 教授 (40095336)
荒川 俊哉 北海道医療大学, 歯学部, 准教授 (40306254)
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| Co-Investigator(Renkei-kenkyūsha) |
Ikeda kazutaka 国立研究開発法人理化学研究所, 統合生命医科学研究センター, 上級研究員 (10466732)
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| Project Period (FY) |
2013-04-01 – 2017-03-31
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| Project Status |
Completed (Fiscal Year 2016)
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| Budget Amount *help |
¥4,940,000 (Direct Cost: ¥3,800,000、Indirect Cost: ¥1,140,000)
Fiscal Year 2016: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2015: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2014: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2013: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
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| Keywords | リゾリン脂質 / ヒト歯根膜 / 歯根吸収 / 歯根膜細胞 / リン脂質 / リゾホスファチジン酸 / メカニカルストレス / 歯根膜 / 歯の移動 / 脂質 |
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| Outline of Final Research Achievements |
We analyzed the expression of LPA receptors, synthetic enzymes of LPA and the intracellular signaling by LPA in human periodontal ligament fibroblasts (hPDLFs). The results showed a strong expression of LPA1 , LPA6 , and lyso－
PLD in hPDLFs. There was LPA induced phosphorylation of ERK1/2 in the hPDLFs. We also analyzed the expression of LPA receptors in mouse tooth germs at the cap and bell stages by RT－PCR, and found that all LPA receptors were expressed during tooth development.Further, we also analyzed LPA1 in mouse tooth germs using in situ hybridization and determined LPA1 expression in the dental mesenchyme at the initial stage and in both the mesenchyme and epithelium from the bud to the bell stages. These results suggest that LPA signaling would play an important role in tooth development and periodontal ligament functions.
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