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Elucidation of molecular regulation mechanism of low turnover diabetic osteoporosis via advanced glycation end products and its therapeutic application

Research Project

Project/Area Number 19K17995
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 54040:Metabolism and endocrinology-related
Research InstitutionUniversity of Occupational and Environmental Health, Japan

Principal Investigator

Tanaka Kenichi  産業医科大学, 医学部, 助教 (90596686)

Project Period (FY) 2019-04-01 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2021: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2020: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2019: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Keywords終末糖化産物 / 破骨細胞 / 糖尿病 / 低骨代謝回転 / 骨粗鬆症
Outline of Research at the Start

本研究では終末糖化産物がどのようにして破骨細胞分化を抑制するか、その分子メカニズムを明らかにする。さらに糖尿病患者でみられる低回転型の骨代謝異常に対し、終末糖化産物が関与しているかどうか検討する。またAGEsシグナルを標的にした糖尿病治療薬の介入により、破骨細胞分化抑制を解除できるかどうか、糖尿病患者における骨代謝異常に対する治療応用を検討する。この研究により増え続ける糖尿病性骨粗鬆症の治療や骨折予防に貢献できると考える。

Outline of Final Research Achievements

Diabetic patients are at high risk for osteoporosis and bone fractures, which have been attributed to endogenous glycation products (AGEs) produced by chronic hyperglycemia and the low-turnover bone metabolism abnormalities characterized in diabetes mellitus. Although AGEs inhibit osteoblast functions, little is known about their roles in regulation of human osteoclast differentiation. In addition, the mechanism of the low bone metabolism observed in diabetes mellitus is unknown. Glyceraldehyde-modified AGEs inhibited human osteoclast differentiation from human monocytes through induction of IL-10 expression via NF-κB. Serum AGE levels were significantly higher in patients with diabetes, and serum AGE levels were negatively correlated with bone metabolism markers. It can be assumed that AGE bioaccumulation in diabetic patients increases the risk of bone fracture, through inhibition of osteoclast differentiation, reduction of bone turnover, and disruption of bone remodeling.

Academic Significance and Societal Importance of the Research Achievements

糖尿病患者は心血管疾患のみならず、骨粗鬆症や骨折リスクが高いことが問題である。糖尿病で特徴とされる低回転型の骨代謝異常のメカニズムとして、グリコールアルデヒド由来AGEのIL-10産生を介したヒト単球から破骨細胞への分化作用が関与している可能性が示され、AGEの新たな分子基盤が明らかにされた。また糖尿病患者の高AGE血症と低回転型の骨代謝異常との関連が示唆された。
現在の高齢社会において糖尿病、骨粗鬆症患者が増加し続けることで今後さらに医療費が増大することが予想される。糖尿病患者の高AGE血症をターゲットとした治療法の確立が、糖尿病のみならず糖尿病性骨粗鬆症に対しても有用となることが期待される。

Report

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

    (1 results)

All 2019

All Journal Article (1 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 1 results)

  • [Journal Article] Glycolaldehyde-modified advanced glycation end-products inhibit differentiation of human monocytes into osteoclasts via upregulation of IL-10.2019

    • Author(s)
      Tanaka K, Yamagata K, Kubo S, Nakayamada S, Sakata K, Matsui T, Yamagishi SI, Okada Y, Tanaka Y.
    • Journal Title

      Bone

      Volume: 128 Pages: 115034-115034

    • DOI

      10.1016/j.bone.2019.115034

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Int'l Joint Research

URL: 

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

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