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mTOR-dependent hypomethylator phenotype in glioblastoma

Research Project

Project/Area Number 19K07649
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 50010:Tumor biology-related
Research InstitutionTokyo Women's Medical University

Principal Investigator

Masui Kenta  東京女子医科大学, 医学部, 准教授 (60747682)

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: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2020: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2019: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Keywords膠芽腫 / mTOR複合体 / エピジェネティクス / DNAメチル化 / 神経回路 / グルタミン酸代謝 / mTORC2 / 神経回路網 / DNMT3A / 悪性脳腫瘍 / EGFR
Outline of Research at the Start

本研究では、難治性の悪性脳腫瘍である膠芽腫において、エピジェネティクス変化の一つであるDNAメチル化の制御機序およびその生物学的意義を探ることを目的とする。特に、腫瘍の悪性化に関与するとされる、DNAメチル化の減少 (低メチル化形質)と、多くのがんで高頻度に起こるmTORC2異常との関連性を探索する。悪性脳腫瘍のDNA低メチル化形質を制御する新規病態の解明を試みることで、未だに有効な治療法がない膠芽腫に対して、新規治療戦略へつながりうる病態の解明を目指す。

Outline of Final Research Achievements

Aberrant DNA methylation pattern, especially global “hypomethylator phenotype”, is closely associated with oncogenesis, but the underlying mechanisms are not fully understood. We demonstrate that mechanistic target of rapamycin complex 2 (mTORC2), a core component of epidermal growth factor receptor (EGFR) signaling, down-regulates the expression of de novo DNA methyltransferase (DNMT3A) to induce global DNA hypomethylator phenotype in the brain cancer glioblastoma (GBM). Integrated analyses with next generation sequencing and comprehensive methylation array for rat and human GBM samples reveal that mTORC2-dependent DNA hypomethylation epigenetically rewires a network of glutamate metabolism, eventually fascilitating tumor cell survival. The findings nominate mTORC2 as a critical regulator of DNA hypomethylator phenotype in cancer cells as well as an exploitable target to interfere with cancer-promoting epigenetic and metabolic reprogramming.

Academic Significance and Societal Importance of the Research Achievements

本研究は、悪性度が高く有効な治療法がない脳腫瘍である膠芽腫の病態を、エピゲノムの視点から解明し、新しい治療戦略の可能性を探索する独創的な試みである。細胞株やヒト組織を使った実験病理学的な手法に加えて、次世代シーケンスやメチル化アレイを用いた網羅的解析により、腫瘍細胞と神経細胞がグルタミン酸代謝を介してネットワークを形成するという基礎的な分子メカニズムが明らかとなり、診断・治療を含む臨床応用まで視野に入れた研究へと繋がる事が期待される。

Report

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

    (21 results)

All 2022 2021 2020 2019 Other

All Journal Article (10 results) (of which Int'l Joint Research: 6 results,  Peer Reviewed: 9 results,  Open Access: 2 results) Presentation (10 results) (of which Invited: 2 results) Remarks (1 results)

  • [Journal Article] The metabolomic landscape plays a critical role in glioma oncogenesis2022

    • Author(s)
      Masui Kenta、Cavenee Webster K.、Mischel Paul S.、Shibata Noriyuki
    • Journal Title

      Cancer Science

      Volume: - Issue: 5 Pages: 1555-1563

    • DOI

      10.1111/cas.15325

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Metabolic Reprogramming Drives Pituitary Tumor Growth through Epigenetic Regulation of TERT2021

    • Author(s)
      Onizuka Hiromi、Masui Kenta、Amano Kosaku、Kawamata Takakazu、Yamamoto Tomoko、Nagashima Yoji、Shibata Noriyuki
    • Journal Title

      ACTA HISTOCHEMICA ET CYTOCHEMICA

      Volume: 54 Issue: 3 Pages: 87-96

    • DOI

      10.1267/ahc.21-00007

    • NAID

      130008058428

    • ISSN
      0044-5991, 1347-5800
    • Year and Date
      2021-06-29
    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] 特集 グリオーマ-現在の常識と近未来のスタンダード Ⅱグリオーマの疫学と診断 病理分類-改訂版WHO分類とcIMPACT-NOW2021

    • Author(s)
      増井 憲太、小森 隆司
    • Journal Title

      Neurological Surgery 脳神経外科

      Volume: 49 Issue: 3 Pages: 510-519

    • DOI

      10.11477/mf.1436204423

    • ISSN
      0301-2603, 1882-1251
    • Year and Date
      2021-05-10
    • Related Report
      2021 Annual Research Report
  • [Journal Article] Protein Acetylation at the Interface of Genetics, Epigenetics and Environment in Cancer2021

    • Author(s)
      Harachi Mio、Masui Kenta、Cavenee Webster K.、Mischel Paul S.、Shibata Noriyuki
    • Journal Title

      Metabolites

      Volume: 11 Issue: 4 Pages: 216-216

    • DOI

      10.3390/metabo11040216

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Codependency of Metabolism and Epigenetics Drives Cancer Progression: A Review2020

    • Author(s)
      Masui K, Harachi M, K Cavenee W, S Mischel P, Shibata N
    • Journal Title

      ACTA HISTOCHEMICA ET CYTOCHEMICA

      Volume: 53 Issue: 1 Pages: 1-10

    • DOI

      10.1267/ahc.20002

    • NAID

      130007803179

    • ISSN
      0044-5991, 1347-5800
    • Year and Date
      2020-02-28
    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Dual Regulation of Histone Methylation by mTOR Complexes Controls Glioblastoma Tumor Cell Growth via EZH2 and SAM2020

    • Author(s)
      Harachi Mio、Masui Kenta、Honda Hiroaki、Muragaki Yoshihiro、Kawamata Takakazu、Cavenee Webster K.、Mischel Paul S.、Shibata Noriyuki
    • Journal Title

      Molecular Cancer Research

      Volume: 18 Issue: 8 Pages: 1142-1152

    • DOI

      10.1158/1541-7786.mcr-20-0024

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] 悪性脳腫瘍のヒストン修飾の制御機構とその意義2020

    • Author(s)
      増井憲太
    • Journal Title

      Medical Science Digest

      Volume: 46 Pages: 34-36

    • Related Report
      2020 Research-status Report
    • Peer Reviewed
  • [Journal Article] 代謝とエピジェネティクスが規定する悪性脳腫瘍の病態2020

    • Author(s)
      増井憲大
    • Journal Title

      Precision Medicine

      Volume: 3 Pages: 88-91

    • Related Report
      2020 Research-status Report
    • Peer Reviewed
  • [Journal Article] mTOR complex 2 is an integrator of cancer metabolism and epigenetics2020

    • Author(s)
      Masui K, Harachi M, Cavenee WK, Mischel PS, Shibata N
    • Journal Title

      Cancer Letters

      Volume: 478 Pages: 1-7

    • DOI

      10.1016/j.canlet.2020.03.001

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] mTORC2 links growth factor signaling with epigenetic regulation of iron2019

    • Author(s)
      Masui K, Harachi M, Ikegami S, Yang H, Onizuka H, Yong WH, Cloughesy TF, Muragaki Y, Kawamata T, Arai N, Komori T, Cavenee WK, Mischel PS, Shibata N
    • Journal Title

      Journal of Biological Chemistry

      Volume: 294 Issue: 51 Pages: 19740-19751

    • DOI

      10.1074/jbc.ra119.011519

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Presentation] 脳腫瘍におけるエピジェネティクス異常2021

    • Author(s)
      増井憲太, 小森隆司, 村垣善浩, 柴田亮行
    • Organizer
      第62回日本神経病理学会総会学術研究会
    • Related Report
      2021 Annual Research Report
    • Invited
  • [Presentation] mTOR依存的なヒストンメチル化の動態とがん細胞の生存戦略2021

    • Author(s)
      増井憲太, Paul S. Mischel, 柴田亮行
    • Organizer
      第15回日本臨床ストレス応答学会大会
    • Related Report
      2021 Annual Research Report
  • [Presentation] IDH野生型膠芽腫におけるDNAメチル化形質の制御機構と意義2021

    • Author(s)
      増井憲太, Paul S. Mischel, 柴田亮行
    • Organizer
      第39回日本脳腫瘍学会学術集会
    • Related Report
      2021 Annual Research Report
  • [Presentation] 代謝とヒストン修飾からみる悪性脳腫瘍の病態2020

    • Author(s)
      増井憲太, 原地美緒, Paul S. Mischel, 柴田亮行
    • Organizer
      第109回日本病理学会総会
    • Related Report
      2020 Research-status Report
  • [Presentation] 二つのmTOR複合体による癌ヒストンメチル化の協調的制御2020

    • Author(s)
      増井憲太
    • Organizer
      第24回日本がん分子標的治療学会学術集会
    • Related Report
      2020 Research-status Report
  • [Presentation] EGFR変異型膠芽腫におけるヒストンメチル化の新規制御機構2020

    • Author(s)
      増井憲太, Paul S. Mischel, 柴田亮行
    • Organizer
      第66回日本病理学会秋期特別総会
    • Related Report
      2020 Research-status Report
  • [Presentation] IDH野生型膠芽腫におけるヒストンメチル化 (H3K27me3) の新規制御機構とその意義2020

    • Author(s)
      増井憲太, 原地美緒, 村垣善浩, Paul S. Mischel, 柴田亮行
    • Organizer
      第38回日本脳腫瘍学会学術集会
    • Related Report
      2020 Research-status Report
  • [Presentation] タンパク質翻訳後修飾のネットワークがもたらすがん細胞の表現型2020

    • Author(s)
      増井憲太, Paul S. Mischel, 柴田亮行
    • Organizer
      第61回日本組織細胞化学会総会・学術集会
    • Related Report
      2020 Research-status Report
    • Invited
  • [Presentation] 下垂体腫瘍における代謝とヒストン修飾の変化2019

    • Author(s)
      鬼塚 裕美, 増井 憲太, 天野 耕作, 川俣 貴一, 山本 智子, 柴田 亮行, 長嶋 洋治
    • Organizer
      第37回日本脳腫瘍病理学会学術集会
    • Related Report
      2019 Research-status Report
  • [Presentation] mTOR複合体によるDNAメチル化の新規制御機構2019

    • Author(s)
      増井 憲太, Paul S. Mischel, 柴田 亮行
    • Organizer
      第7回がんと代謝研究会
    • Related Report
      2019 Research-status Report
  • [Remarks] 東京女子医科大学医学部 病理学講座 (人体病理学・病態神経科学分野) ホームページ

    • URL

      https://pathoneurosci-twmu.com/

    • Related Report
      2021 Annual Research Report

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

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