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Development of inhibitors for Multiple Hereditary Exostoses

Research Project

Project/Area Number 19K09605
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 56020:Orthopedics-related
Research InstitutionSaitama Medical University

Principal Investigator

Mai Kuratani  埼玉医科大学, 医学部, 助手 (50758109)

Co-Investigator(Kenkyū-buntansha) 片桐 岳信  埼玉医科大学, 医学部, 教授 (80245802)
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: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2020: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2019: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Keywords遺伝性疾患 / 軟骨 / 骨
Outline of Research at the Start

多発性外骨腫症 (Multiple Hereditary Exostoses: MHE) は、全身の骨に骨軟骨腫が発生する遺伝性疾患であり、根本的な治療法は確立されていない。MHEは、プロテオグリカンの糖鎖合成酵素をコードするEXT1遺伝子もしくはEXT2遺伝子の変異によって発症することが明らかとなっている。 最近、MHEにおけるEXT1の変異によって 、BMP活性が亢進することが、骨軟骨腫の発症に関与する可能性が示された。 本研究は、MHEの責任遺伝子EXT1及びEXT2の変異で引き起こされるBMPシグナル活性化のメカニズム解析し、特異的な阻害剤の開発を目指す。

Outline of Final Research Achievements

Multiple Hereditary Exostoses (MHE) is a genetic bone disease, which is characterized by growths of multiple osteochondromas. Patients with MHE carry a loss-of-function mutant of Ext1 and Ext2, which encodes a glycosyltransferase essential for heparan sulfate biosynthesis. In the present study, we established a new two types of in vitro experimental systems. The first is chondrocyte culture system that mimics the functional deletion of Ext1. The second is overexpression of mutant Ext1 in cultured cells. Our results suggest that the two experimental systems mimic the pathological condition of MHE. These are a useful model to examine the molecular mechanisms of mutant Ext1 and the potential therapeutics for MHE.

Academic Significance and Societal Importance of the Research Achievements

本研究で樹立した解析法は、多発性外骨腫の発生機序解明と阻害薬の開発に応用できる可能性がある。

Report

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

    (13 results)

All 2021 2020 2019 Other

All Journal Article (1 results) (of which Peer Reviewed: 1 results,  Open Access: 1 results) Presentation (11 results) (of which Int'l Joint Research: 5 results) Remarks (1 results)

  • [Journal Article] Accumulated Knowledge of Activin Receptor-Like Kinase 2 (ALK2)/Activin A Receptor, Type 1 (ACVR1) as a Target for Human Disorders2021

    • Author(s)
      Katagiri T, Tsukamoto S, Kuratani M
    • Journal Title

      Biomedicines

      Volume: 9 Issue: 7 Pages: 736-736

    • DOI

      10.3390/biomedicines9070736

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Presentation] Establishment of an in vivo model of ectopic calcification in mouse skeletal muscle2021

    • Author(s)
      Tsukamoto S, Kuratani M, Hamai R, Tsuchiya K, Suzuki O, Yamada T, Katagiri T
    • Organizer
      ASBMR 2021 Annual meeting
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] マウス骨格筋における異所性石灰化モデルの確立と解析2021

    • Author(s)
      塚本翔、倉谷麻衣、鈴木 治、片桐岳信
    • Organizer
      第39回日本骨代謝学会学術集会
    • Related Report
      2021 Annual Research Report
  • [Presentation] びまん性特発性骨増殖症に関連するALK2 K400E変異体の機能解析2020

    • Author(s)
      塚本翔、倉谷麻衣、片桐岳信
    • Organizer
      第38回日本骨代謝学会
    • Related Report
      2020 Research-status Report
  • [Presentation] Functional characterization of a unique mutant of ALK2, p.K400E, that is associated with a skeletal disorder, diffuse idiopathic skeletal hyperostosis2020

    • Author(s)
      Sho Tsukamoto, Mai Kuratani, Takenobu Katagiri
    • Organizer
      ASBMR(米国骨代謝学会)2020
    • Related Report
      2020 Research-status Report
  • [Presentation] 内軟骨性骨化におけるBMPとWntの新たなクロストーク2019

    • Author(s)
      塚本翔、倉谷麻衣、関根典子、大久保美里、田中伸哉、自見英治郎、織田弘美、片桐岳信
    • Organizer
      第5回日本骨免疫学会
    • Related Report
      2019 Research-status Report
  • [Presentation] Identiffication of a critical amino acid residue in ALK2 for the binding and inhibition by the anti-ALK2 blocking antibody2019

    • Author(s)
      Katagiri T, Tsukamoto S, Kuratani M, Tsuji S, Takaishi K, Kunikata T, Nakamura K, Kawaguchi Y, Hasegawa J
    • Organizer
      FASEB SRC on TGF-β Superfamily
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] A crosstalk between Wnt and TGF-β/BMP families regulates endochondral bone formation2019

    • Author(s)
      Tsukamoto S, Kuratani M, Sekine N, Okubo M, Tanaka S, Jimi E, Oda H, Katagiri T
    • Organizer
      Gordon Research Conference on Wnt Signaling
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] Wnt7bは内軟骨性骨化における骨形成誘導因子である2019

    • Author(s)
      塚本翔、倉谷麻衣、関根典子、大久保美里、田中伸哉、自見英治郎、織田弘美、片桐岳信
    • Organizer
      第17回RCGMフロンティアシンポジウム
    • Related Report
      2019 Research-status Report
  • [Presentation] Wnt7b expressed by hypertrophic chondrocytes is a critical inducer of bone formation during endochondral ossification2019

    • Author(s)
      Tsukamoto S, Kuratani M, Sekine N, Okubo M, Tanaka S, Jimi E, Oda H, Katagiri T
    • Organizer
      ASBMR 2019 Annual meeting
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] Identiffication of a critical amino acid residue in ALK2 for the binding and inhibition by the anti-ALK2 blocking antibody2019

    • Author(s)
      Katagiri T, Tsukamoto S, Kuratani M, Tsuji S, Takaishi K, Kunikata T, Nakamura K, Kawaguchi Y, Hasegawa J
    • Organizer
      ASBMR 2019 Annual meeting
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] 抗ALK2阻害抗体の結合と阻害活性に重要なALK2細胞外領域アミノ酸残基の同定2019

    • Author(s)
      片桐岳信、塚本翔、倉谷麻衣
    • Organizer
      第37回日本骨代謝学会学術集会
    • Related Report
      2019 Research-status Report
  • [Remarks] 埼玉医科大学 ゲノム基礎医学

    • URL

      http://www.saitama-med.ac.jp/uinfo/biomedsci/index.html

    • Related Report
      2020 Research-status Report

URL: 

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

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