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Genomic and epigenomic histone alterations and role for osteogenic differentiation in bone tumors

Research Project

Project/Area Number 22K06941
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 49020:Human pathology-related
Research InstitutionOkayama University

Principal Investigator

Yamamoto Hidetaka  岡山大学, 医歯薬学域, 教授 (30404073)

Project Period (FY) 2022-04-01 – 2025-03-31
Project Status Completed (Fiscal Year 2024)
Budget Amount *help
¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000)
Fiscal Year 2024: ¥520,000 (Direct Cost: ¥400,000、Indirect Cost: ¥120,000)
Fiscal Year 2023: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Fiscal Year 2022: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Keywords骨巨細胞腫 / 軟骨芽細胞腫 / 軟骨肉腫 / 転写因子 / メチル化 / 5-hmC / H3F3A / IDH / TET2 / エピゲノム / 骨腫瘍 / 骨分化 / ヒストン
Outline of Research at the Start

骨腫瘍において、病態や悪性度に関与する骨分化異常のメカニズム(例:骨巨細胞腫におけるヒストンH3F3A遺伝子変異と骨分化抑制)に関しては不明な点が多い。本研究課題では、骨腫瘍(骨巨細胞腫や骨肉腫等)の臨床検体や培養細胞を用いて、メチル化解析、ChIP-sequence等を行い、ヒストン遺伝子変異、エピゲノム異常と骨分化制御機構の関係を明らかにし、病態の解明とともに、新しい診断補助マーカーや治療標的候補を同定することを目的とする。

Outline of Final Research Achievements

We revealed that giant cell tumors of bone and chondroblastomas frequently had mutations in H3F3A and H3F3B, respectively, and showed the characteristic expression pattern of the transcriptional factors related to the chondro-osseous differentiation. A certain transcriptional factor gene was methylated in association with H3F3A mutation in giant cell tumors of bone, suggesting that this gene might be responsible for inhibition of the osseoblastic differentiation. In chondrosarcomas often with IDH1/2 mutation, 5-hmC expression level (which represented methylation status) was associated with biological behavior and gene expression pattern. The results suggested that epigenomic alteration may play an important role in the pathogenesis and progression of bone tumors.

Academic Significance and Societal Importance of the Research Achievements

骨腫瘍は互いに組織像が類似するため病理診断が難しいことが多々あるが、良性から悪性まで悪性度は様々であり、より正確な診断方法の確立や病態に基づいた治療方法の開発が求められている。本研究により、骨巨細胞腫、軟骨芽細胞腫、軟骨肉腫をモデルとして、骨腫瘍の分化や悪性度の決定にエピゲノム異常が重要な役割をしていることが示唆された。そして、これらの腫瘍発生に関わるドライバー遺伝子変異(H3F3A/B, IDH1/2)はヒストンやメチル化といったエピゲノム調節に直接影響を与えることで、病態形成に密接に関与していると推察され、これらの分子機構に基づく新規治療の開発に繋がる可能性がある。

Report

(4 results)
  • 2024 Annual Research Report   Final Research Report ( PDF )
  • 2023 Research-status Report
  • 2022 Research-status Report
  • Research Products

    (5 results)

All 2024 2023 2021

All Journal Article (4 results) (of which Peer Reviewed: 4 results,  Open Access: 2 results) Presentation (1 results)

  • [Journal Article] Treatment of Tenosynovial Giant Cell Tumor of the Cervical Spine with Postoperative Anti-RANKL Antibody (Denosumab) Administration2024

    • Author(s)
      Hirata Y, Nagase T, Sasada S, Ayada Y, Miyake H, Sugahara C, Yamamoto H, Oda Y, Yasuhara T, Tanaka S.
    • Journal Title

      Acta Medica Okayama

      Volume: 78 Issue: 6 Pages: 469-474

    • DOI

      10.18926/AMO/67877

    • URL

      https://ousar.lib.okayama-u.ac.jp/67877

    • Related Report
      2024 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Hemizygous deletion of cyclin-dependent kinase inhibitor 2A/B with p16 immuno-negative and methylthioadenosine phosphorylase retention predicts poor prognosis in IDH-mutant adult glioma2024

    • Author(s)
      Otsuji R, Hata N, Yamamoto H, Kuga D, Hatae R, Sangatsuda Y, Fujioka Y, Noguchi N, Sako A, Togao O, Yoshitake T, Nakamizo A, Mizoguchi M, Yoshimoto K.
    • Journal Title

      Neurooncol Adv

      Volume: 6 Issue: 1

    • DOI

      10.1093/noajnl/vdae069

    • Related Report
      2024 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Expression of SATB2, RUNX2, and SOX9 and possible osteoblastic and chondroblastic differentiation in chondroblastoma2023

    • Author(s)
      Toda Yu、Yamamoto Hidetaka、Iwasaki Takeshi、Ishihara Shin、Ito Yoshihiro、Susuki Yosuke、Kawaguchi Kengo、Kinoshita Izumi、Kiyozawa Daisuke、Yamada Yuichi、Kohashi Kenichi、Kimura Atsushi、Fujiwara Toshifumi、Setsu Nokitaka、Endo Makoto、Matsumoto Yoshihiro、Nakashima Yasuharu、Mawatari Masaaki、Oda Yoshinao
    • Journal Title

      Pathology - Research and Practice

      Volume: 241 Pages: 154239-154239

    • DOI

      10.1016/j.prp.2022.154239

    • Related Report
      2022 Research-status Report
    • Peer Reviewed
  • [Journal Article] Histological and immunohistochemical features and genetic alterations in the malignant progression of giant cell tumor of bone: a possible association with TP53 mutation and loss of H3K27 trimethylation2021

    • Author(s)
      Ishihara Shin、Yamamoto Hidetaka、Iwasaki Takeshi、Toda Yu、Yamamoto Takeo、Yoshimoto Masato、Ito Yoshihiro、Susuki Yousuke、Kawaguchi Kengo、Kinoshita Izumi、Yamada Yuichi、Kohashi Kenichi、Fujiwara Toshifumi、Setsu Nokitaka、Endo Makoto、Matsumoto Yoshihiro、Kakuda Yuko、Nakashima Yasuharu、Oda Yoshinao
    • Journal Title

      Modern Pathology

      Volume: - Issue: 5 Pages: 640-648

    • DOI

      10.1038/s41379-021-00972-x

    • Related Report
      2022 Research-status Report
    • Peer Reviewed
  • [Presentation] 軟骨肉腫におけるDNAメチル化異常と予後予測因子の解析2024

    • Author(s)
      古川寛、岩崎健、山元英崇、他
    • Organizer
      第113回日本病理学会総会
    • Related Report
      2024 Annual Research Report 2023 Research-status Report

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Published: 2022-04-19   Modified: 2026-01-16  

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