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Elucidating mechanisms of cartilage matrix destruction via DNA methylation

Research Project

Project/Area Number 16K10882
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Orthopaedic surgery
Research InstitutionTohoku University

Principal Investigator

Hashimoto Ko  東北大学, 医学系研究科, 講師 (00718497)

Project Period (FY) 2016-04-01 – 2020-03-31
Project Status Completed (Fiscal Year 2019)
Budget Amount *help
¥4,940,000 (Direct Cost: ¥3,800,000、Indirect Cost: ¥1,140,000)
Fiscal Year 2019: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2018: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2017: ¥520,000 (Direct Cost: ¥400,000、Indirect Cost: ¥120,000)
Fiscal Year 2016: ¥3,120,000 (Direct Cost: ¥2,400,000、Indirect Cost: ¥720,000)
Keywords変形性関節症 / 軟骨基質破壊 / 網羅的遺伝子解析 / 軟骨細胞 / 遺伝子発現 / 網羅的解析 / マイクロアレイ / 関節軟骨 / DNAメチル化 / 遺伝子発現調節
Outline of Final Research Achievements

In this study, exhaustive gene expression analysis of approximately 24,500 genes were conducted of human cartilage pieces from femoral heads harvested from surgeries for patients with femoral neck fracture (non-osteoarthritic: non-OA group) and secondary osteoarthritis (OA group). DPT, IGFBP7, FOXO1 and KLF2 were the genes identified as the new OA-related genes as they were highly expressed in chondrocytes of Japanese hip OA compared to non-OA. Out of overexpressed genes in OA, only 10% of the genes were common between Japanese and western population. Our study elucidated the difference in gene expression patterns of OA chonderocytes between Japanese and western population although the phenotype of OA is similar between different ethnic origins.

Academic Significance and Societal Importance of the Research Achievements

本研究により、従来報告があった欧米人のOAにおける軟骨細胞の形質と、日本人のOAにおける形質が異なることが示された。また日本人のOA軟骨細胞に特異的と考えられる遺伝子発現パターンが見つかり、今後日本人に特化したOAの病態解明や治療ターゲットとなり得る遺伝子群を発見することができた。今回新たに発見された遺伝子群の機能解析を進めることで、日本人におけるOAの発症や病態進行のメカニズムを解明する一助となる可能性がある。またこれらの遺伝子群が発現するタンパクの機能解析の結果如何によっては、従来不可能であったOAに対する根治的・根本的な治療介入への可能性が示唆される。

Report

(5 results)
  • 2019 Annual Research Report   Final Research Report ( PDF )
  • 2018 Research-status Report
  • 2017 Research-status Report
  • 2016 Research-status Report
  • Research Products

    (8 results)

All 2018 2017 2016

All Journal Article (1 results) (of which Peer Reviewed: 1 results,  Open Access: 1 results) Presentation (7 results) (of which Int'l Joint Research: 4 results)

  • [Journal Article] A whole-genome transcriptome analysis of articular chondrocytes in secondary osteoarthritis of the hip2018

    • Author(s)
      Takashi Aki, Ko Hashimoto, Masanori Ogasawara, Eiji Itoi
    • Journal Title

      PLoS One

      Volume: 13 Issue: 6 Pages: e0199734-e0199734

    • DOI

      10.1371/journal.pone.0199734

    • Related Report
      2018 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] A microarray analysis of gene expression in secondary osteoarthritis of the hip in Japanese2018

    • Author(s)
      Takashi Aki, Ko Hashimoto, Masanori Ogasawara, Eiji Itoi
    • Organizer
      Orthopedic Research Society 2018
    • Related Report
      2018 Research-status Report 2017 Research-status Report
    • Int'l Joint Research
  • [Presentation] Searching potential transcription factors regulating MMP13 overexpression in human osteoarthritic chondrocytes: A microarray screening2017

    • Author(s)
      Takashi Aki
    • Organizer
      World Congress on Osteoarthritis
    • Place of Presentation
      米国・ラスベガス
    • Year and Date
      2017-04-27
    • Related Report
      2016 Research-status Report
    • Int'l Joint Research
  • [Presentation] Exhaustive gene expression analysis in chondrocytes of osteoarthritis of the hip in Japanese2017

    • Author(s)
      Masanori Ogasawara
    • Organizer
      World Congress on Osteoarthritis
    • Place of Presentation
      米国・ラスベガス
    • Year and Date
      2017-04-27
    • Related Report
      2016 Research-status Report
    • Int'l Joint Research
  • [Presentation] 秋貴史 橋本 功 小笠原将教 高橋敦 井樋栄二2017

    • Author(s)
      日本人二次性変形性股関節症の関節軟骨細胞における遺伝子発現の網羅的解析  -欧米人データとの比較-
    • Organizer
      第32回 日本整形外科学会基礎学術集会
    • Related Report
      2017 Research-status Report
  • [Presentation] Searching potential transcription factors regulating MMP13 overexpression in human osteoarthritic chondrocytes - A microarray screening -2017

    • Author(s)
      Takashi Aki, Ko Hashimoto, Atsushi Takahashi, Masanori Ogasawara, Eiji Itoi
    • Organizer
      World Congress on Osteoarthritis 2017
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research
  • [Presentation] 日本人の変形性股関節症に関わる遺伝子発現パターンの網羅的解析2016

    • Author(s)
      小笠原将教
    • Organizer
      日本整形外科学会基礎学術集会
    • Place of Presentation
      福岡・福岡国際会議場
    • Year and Date
      2016-10-13
    • Related Report
      2016 Research-status Report
  • [Presentation] ヒト関節軟骨におけるMMP13, IL1B 遺伝子発現に関わる転写因子の網羅的解析2016

    • Author(s)
      秋貴史
    • Organizer
      日本整形外科学会基礎学術集会
    • Place of Presentation
      福岡・福岡国際会議場
    • Year and Date
      2016-10-13
    • Related Report
      2016 Research-status Report

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Published: 2016-04-21   Modified: 2021-02-19  

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