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Elucidation of essential common molecular mechanisms that control postmenopausal osteoporosis and weight gain and development of therapeutic strategies

Research Project

Project/Area Number 21H03108
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Review Section Basic Section 57010:Oral biological science-related
Research InstitutionKyushu University

Principal Investigator

Jimi Eijiro  九州大学, 歯学研究院, 教授 (40276598)

Co-Investigator(Kenkyū-buntansha) 片桐 岳信  埼玉医科大学, 医学部, 教授 (80245802)
川端 由子  九州大学, 歯学研究院, 助教 (40906830)
Project Period (FY) 2021-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥17,290,000 (Direct Cost: ¥13,300,000、Indirect Cost: ¥3,990,000)
Fiscal Year 2023: ¥5,330,000 (Direct Cost: ¥4,100,000、Indirect Cost: ¥1,230,000)
Fiscal Year 2022: ¥6,110,000 (Direct Cost: ¥4,700,000、Indirect Cost: ¥1,410,000)
Fiscal Year 2021: ¥5,850,000 (Direct Cost: ¥4,500,000、Indirect Cost: ¥1,350,000)
KeywordsNF-κB / 閉経後骨粗鬆症 / 肥満 / エストロゲン
Outline of Research at the Start

高齢女性の閉経は、女性ホルモンの減少による骨量の減少と体重増加を起こす。最近、女性ホルモンの一種であるエストロンE1が、NF-κBシグナルと協調して炎症を亢進させる現象が報告されたことから、1)女性ホルモンによる骨代謝とエネルギー代謝に共通の制御機構の解析、2)卵巣摘出における女性ホルモンとNF-κB間のクロストーク解析、3)骨量減少と体重増加を抑制する薬剤の探索を行う。

Outline of Final Research Achievements

Postmenopausal women experience bone loss and weight gain via NF-κB activation. We examined the role of NF-κB in bone and energy metabolism following menopause. NF-κB reporter mice, which can be used to measure NF-κB activation in vivo, were ovariectomized (OVX) and the luminescence intensity after OVX increased in the epiphyses of the long bones and WAT, but not in the other tissues. OVX was performed on wild-type (WT) and p65 (S534A) mutant knock-in mice, in which enhances the transcriptional activity of NF-κB. Compared to WT mice, weight gain with worsening glucose tolerance and trabecular bone loss due to the suppression of bone formation and increase in bone marrow adipocytes were observed in the S534A KI-OVX group. Disulfiram, an anti-alcoholic drug, suppressed OVX-induced activation of NF-κB and also suppressed weight gain and bone loss. Taken together, activation of NF-κB in the epiphyses of long bones and WAT after OVX regulates post-OVX weight gain and bone loss.

Academic Significance and Societal Importance of the Research Achievements

閉経後の女性の骨量の減少は運動機能の低下、また体重増加は生活習慣病やがんの発症と関連する。我々は閉経後骨粗鬆症モデルである卵巣摘出術(OVX)を用いて、OVX後1週間で骨端部と白色脂肪組織で骨代謝やエネルギー代謝に重要なNF-κBが活性化されること、NF-κBの活性化が亢進したマウスではOVX後の骨量減少と体重増加が亢進することを明らかにした。さらに、NF-κBの活性化の抑制効果を持つ抗アルコール薬であるジスルフィラム (DSF)の投与が、OVX後の骨量減少と体重増加を抑制することを明らかにした。以上の結果は、NF-κBが閉経後の骨量減少と体重増加の新たな治療標的になる可能性を示唆する。

Report

(4 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Annual Research Report
  • 2021 Annual Research Report
  • Research Products

    (13 results)

All 2023 2022 2021 Other

All Journal Article (3 results) (of which Peer Reviewed: 3 results,  Open Access: 3 results) Presentation (9 results) (of which Int'l Joint Research: 1 results,  Invited: 2 results) Remarks (1 results)

  • [Journal Article] Inhibition of Non-Canonical NF-κB signaling suppresses periodontal inflammation and bone loss2023

    • Author(s)
      Aoki T, Hiura F, Li A, Yang N, Takakura-Hino N, Mukai S, Matsuda M, Nishimura F, Jimi E
    • Journal Title

      Frontiers in Immunology

      Volume: -

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Critical roles of NF-κB signaling molecules in bone metabolism revealed by genetic mutations in osteopetrosis.2022

    • Author(s)
      Jimi E, Katagiri T.
    • Journal Title

      Int J Mol Sci.

      Volume: 23 Issue: 14 Pages: 7995-7995

    • DOI

      10.3390/ijms23147995

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] RANKL elevation activates the NIK/NF-κB pathway, inducing obesity in ovariectomized mice.2022

    • Author(s)
      Mori M, Mizokami A, Sano T, Mukai S, Hiura F, Ayukawa A, Koyano K, Kanematsu T, Jimi E
    • Journal Title

      J Endocrinol.

      Volume: in press Issue: 1 Pages: 1-6

    • DOI

      10.1530/joe-21-0424

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Presentation] The regulation of NF-κB signaling by p65 serine 534 phosphorylation is involved in both postmenopausal osteoporosis and weight gain2023

    • Author(s)
      Huang F, Gao J, Li A, Mizokami A, Jimi E
    • Organizer
      第65回歯科基礎医学会学術大会(東京)
    • Related Report
      2023 Annual Research Report
  • [Presentation] NF-κB signaling is involved in both postmenopausal osteoporosis and weight gain2023

    • Author(s)
      Huang F, Gao J, Li A, Mizokami A, Jimi E
    • Organizer
      第96回日本生化学会大会(福岡)
    • Related Report
      2023 Annual Research Report
  • [Presentation] 加齢に伴う病態変化の生化学2023

    • Author(s)
      自見 英治郎
    • Organizer
      第96回日本生化学会大会(福岡)
    • Related Report
      2023 Annual Research Report
    • Invited
  • [Presentation] 閉経後骨粗しょう症と体重増加の共通分子機構2023

    • Author(s)
      自見 英治郎
    • Organizer
      第96回日本生化学会大会(福岡)
    • Related Report
      2023 Annual Research Report
    • Invited
  • [Presentation] NF-κB シグナルの調節メカニズムは閉経後骨粗鬆症と体重増加に関与する2022

    • Author(s)
      黄 菲,高 靖,李 傲男,溝上 顕子,自見英治郎
    • Organizer
      第64回歯科基礎医学会学術大会
    • Related Report
      2022 Annual Research Report
  • [Presentation] 転写因子 NF-κB の新たな活性化制御機構とその機能解析2022

    • Author(s)
      青木 司,松田 美穂,自見英治郎
    • Organizer
      第64回歯科基礎医学会学術大会
    • Related Report
      2022 Annual Research Report
  • [Presentation] 閉経による血清RANKL濃度の上昇はNF-κB の非古典的経路を活性化し肥満を引き起こす2021

    • Author(s)
      森 馨代,溝上 顕子,佐野 朋美,兼松 隆,自見英治郎
    • Organizer
      第63回歯科基礎医学会学術大会
    • Related Report
      2021 Annual Research Report
  • [Presentation] The role of serine 536 phosphorylation of NF-κB p65 in the bone loss and obesity in postmenopausal women2021

    • Author(s)
      黄 菲、高 靖、自見英治郎
    • Organizer
      第63回歯科基礎医学会学術大会
    • Related Report
      2021 Annual Research Report
  • [Presentation] Soluble RANKL exacerbates menopause-associated obesity via non-canonical NF-κB signaling pathway2021

    • Author(s)
      MoriK, Mizokami A, Sano T, Ayukawa Y, Kanematsu T, Jimi E
    • Organizer
      Kyudai Oral Bioscience & OBT Research Center 5th Joint International Symposium 2021
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Remarks] 九州大学歯学研究院OBT研究センター

    • URL

      https://www.dent.kyushu-u.ac.jp/project/#obt

    • Related Report
      2021 Annual Research Report

URL: 

Published: 2021-04-28   Modified: 2025-01-30  

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