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Elucidation of the molecular mechanism in the osteoclast function through protein kinase N3 and its clinical application.

Research Project

Project/Area Number 19K10050
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 57010:Oral biological science-related
Research InstitutionMatsumoto Dental University

Principal Investigator

Uehara Shunsuke  松本歯科大学, 歯学部, 講師 (90434480)

Co-Investigator(Kenkyū-buntansha) 小林 泰浩  松本歯科大学, 総合歯科医学研究所, 教授 (20264252)
Project Period (FY) 2019-04-01 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2021: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2020: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2019: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Keywords破骨細胞 / 骨吸収 / Pkn3 / 骨粗鬆症
Outline of Research at the Start

本研究の目的は、1)In vitro及びin vivoにおけるPkn3阻害剤の骨吸収に対する効果、2)Pkn3によるc-Src活性化の分子機構、を明らかにすることである。
そのために、培養破骨細胞の骨吸収活性に対するPkn3阻害剤の作用の解明、卵巣切除モデル(骨吸収亢進により骨量減少を呈する)マウスの骨量に対するPkn3阻害剤の治療効果の検証、Pkn3によりリン酸化され、c-Srcの活性化に関与する分子の同定を行う。

Outline of Final Research Achievements

In osteoporosis and inflammatory bone diseases, excessive bone resorption results in loss of bone mass. In order to prevent the deterioration of bone formation due to the failure of osteoclast-osteoblast coupling, it is necessary to develop a drug that suppresses only the bone-resorbing activity of osteoclasts. We found Protein kinase N3 (Pkn3), which enhances the function of osteoclasts downstream of the Wnt signaling. Since this protein is rarely expressed in normal tissues other than osteoclasts, it is suitable as a target for developing drugs with few side effects. In this research project, we administered a low-molecular-weight compound that had been reported to have a Pkn3 inhibitory effect on model mice showing bone loss due to increased bone resorption. This compound alleviated bone loss by suppressing bone resorption.

Academic Significance and Societal Importance of the Research Achievements

骨粗鬆症は、日本国内だけでも推定1000万人以上の患者さんが存在する疾患である。骨量の減少による、骨折の増加は、QOLを低下させるだけでなく、寝たきりにつながる可能性もある。骨量の減少は、骨吸収を行う破骨細胞の働きが、骨形成を行う骨芽細胞の働きを上回ることで生じるため、破骨細胞の骨吸収機能を抑制する化合物は、骨粗鬆症の治療薬になり得る。我々は、Pkn3というタンパク質が破骨細胞機能に重要であることを見出した。本研究はその阻害剤が、骨量減少モデルマウスの治療に利用できることを示したもので、臨床応用へつながる成果である。

Report

(4 results)
  • 2021 Annual Research Report   Final Research Report ( PDF )
  • 2020 Research-status Report
  • 2019 Research-status Report
  • Research Products

    (10 results)

All 2022 2021 2020 2019

All Journal Article (9 results) (of which Int'l Joint Research: 2 results,  Peer Reviewed: 8 results,  Open Access: 7 results) Presentation (1 results)

  • [Journal Article] Inhibitor of protein kinase N3 suppresses excessive bone resorption in ovariectomized mice2022

    • Author(s)
      Shunsuke Uehara, Hideyuki Mukai, Teruhito Yamashita, Masanori Koide, Kohei Murakami, Nobuyuki Udagawa, Yasuhiro Kobayashi
    • Journal Title

      J Bone Miner Metab .

      Volume: 40 Issue: 2 Pages: 251-261

    • DOI

      10.1007/s00774-021-01296-1

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Characterization, pharmacokinetics, and pharmacodynamics of anti-Siglec-15 antibody and its potency for treating osteoporosis and as follow-up treatment after parathyroid hormone use.2021

    • Author(s)
      Tsuda E, Fukuda C, Okada A, Karibe T, Hiruma Y, Takagi N, Isumi Y, Yamamoto T, Hasegawa T, Uehara S, Koide M, Udagawa N, Amizuka N, Kumakura S.
    • Journal Title

      Bone.

      Volume: Epub 2021 Oct 27. Pages: 116241-116241

    • DOI

      10.1016/j.bone.2021.116241

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Osteoclast differentiation by RANKL and OPG signaling pathways2020

    • Author(s)
      Udagawa Nobuyuki、Koide Masanori、Nakamura Midori、Nakamichi Yuko、Yamashita Teruhito、Uehara Shunsuke、Kobayashi Yasuhiro、Furuya Yuriko、Yasuda Hisataka、Fukuda Chie、Tsuda Eisuke
    • Journal Title

      Journal of Bone and Mineral Metabolism

      Volume: 39 Issue: 1 Pages: 19-26

    • DOI

      10.1007/s00774-020-01162-6

    • Related Report
      2021 Annual Research Report 2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] The Vitamin D Receptor in Osteoblast-Lineage Cells Is Essential for the Proresorptive Activity of 1α,25(OH)2D3 In Vivo2020

    • Author(s)
      Tomoki Mori, Kanji Horibe, Masanori Koide, Shunsuke Uehara, Yoko Yamamoto, Shigeaki Kato, Hisataka Yasuda, Naoyuki Takahashi, Nobuyuki Udagawa, Yuko Nakamichi
    • Journal Title

      Endocrinology .

      Volume: 161 Issue: 11 Pages: 1-14

    • DOI

      10.1210/endocr/bqaa178

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Sclerostin expression in trabecular bone is downregulated by osteoclasts2020

    • Author(s)
      Masanori Koide, Teruhito Yamashita, Kohei Murakami, Shunsuke Uehara, Keigo Nakamura, Midori Nakamura, Mai Matsushita, Toshiaki Ara, Hisataka Yasuda, Josef M Penninger, Naoyuki Takahashi, Nobuyuki Udagawa, Yasuhiro Kobayashi
    • Journal Title

      Sci Rep .

      Volume: 10 Issue: 1 Pages: 13751-13751

    • DOI

      10.1038/s41598-020-70817-1

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Regulations of osteoclast formation and function by Wnt signals.2019

    • Author(s)
      Kobayashi Y, Uehara S, Koide M
    • Journal Title

      Clin Calcium

      Volume: 29 Pages: 309-315

    • Related Report
      2019 Research-status Report
  • [Journal Article] Regulation of osteoclast function via Rho-Pkn3-c-Src pathways.2019

    • Author(s)
      Uehara S, Udagawa N, Kobayashi Y
    • Journal Title

      J Oral Biosci

      Volume: 61 Issue: 3 Pages: 135-140

    • DOI

      10.1016/j.job.2019.07.002

    • Related Report
      2019 Research-status Report
    • Peer Reviewed
  • [Journal Article] PKN1 kinase-negative knock-in mice develop splenomegaly and leukopenia at advanced age without obvious autoimmune-like phenotypes.2019

    • Author(s)
      Siddique SM, Kubouchi K, Shinmichi Y, Sawada N, Sugiura R, Itoh Y, Uehara S, Nishimura K, Okamura S, Ohsaki H, Kamoshida S, Yamashita Y, Tamura S, Sonoki T, Matsuoka H, Itoh T, Mukai H.
    • Journal Title

      Sci Rep.

      Volume: 27;9(1) Issue: 1 Pages: 13977-13993

    • DOI

      10.1038/s41598-019-50419-2

    • NAID

      120006733136

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] The Regulation of Bone Metabolism and Disorders by Wnt Signaling.2019

    • Author(s)
      Maeda K, Kobayashi Y, Koide M, Uehara S, Okamoto M, Ishihara A, Kayama T, Saito M, Marumo K
    • Journal Title

      Int J Mol Sci

      Volume: 20 Issue: 22 Pages: 5525-5525

    • DOI

      10.3390/ijms20225525

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] プロテインキナーゼN3 (Pkn3) 阻害剤は、卵巣切除に伴う骨量減少を骨吸収抑制により軽減する2020

    • Author(s)
      上原俊介,山下照仁,村上康平,小出雅則,宇田川信之,小林泰浩
    • Organizer
      第38回日本骨代謝学会学術集会
    • Related Report
      2020 Research-status Report

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Published: 2019-04-18   Modified: 2023-01-30  

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