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Vulnerability to DNA damage and cancer stemness; analysis in glioblastoma

Research Project

Project/Area Number 20K07442
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 49030:Experimental pathology-related
Research InstitutionHirosaki University

Principal Investigator

Akira Kurose  弘前大学, 医学研究科, 教授 (70244910)

Co-Investigator(Kenkyū-buntansha) 小川 薫  弘前大学, 医学部附属病院, 助教 (10815799)
鎌滝 章央  弘前大学, 医学研究科, 助教 (60360004)
Project Period (FY) 2020-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2022: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2021: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2020: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
Keywordsglioblastoma / 核異型 / 幹細胞性 / DNA傷害 / carcinoma / γH2AX / 二本鎖断裂 / 病理診断 / atypia / nucleus / TP53 / tumor mutation burden / copy number variation / cancer / DNA / double strand break / nuclear pleomorphism / stem cell / meningioma / DNA double strand break / cell cycle / nuclear atypia / DNA double strand breaks / DNA repair / stemness
Outline of Research at the Start

DNA傷害抑制機構は細胞の恒常性維持に重要である.核形態がよく揃っている腫瘍は幹細胞性が維持され悪性度が高いと推測される.先行研究ではGBMで核の揃ったものはDNA傷害が殆どみられず,核の多形性が顕著なものではDNA傷害が高度であったことから「DNA傷害抑制機構が機能している腫瘍は幹細胞性維持機能が高く核の形態変化を生じないため核は単調で悪性度が高く, DNA傷害抑制機構が低い腫瘍は幹細胞性が喪失しやすくDNA傷害が核の多形性につながり悪性度低い」と予測される.そこでMS-GBMとGC-GBMを比較して調べDNA傷害抑制機構の癌化や悪性度への関与,および核異型の成因を明らかにする.

Outline of Final Research Achievements

Prevention from DNA damage is considered to correlate with morphological homogeneity of nuclei as well as with stemness and malignancy; correlation of nuclear shape with protection of DNA and malignancy was subjected. A method to compare homogeneity of nuclear shape was established and it correlated significantly with prevention from DNA damage and expression of some stemness markers in glioblastomas. In cholangiocarcinomas, cases with wildtype TP53 showed significant uniformity of nuclear area compared to those with mutant TP53; the former had a tendency showing uniformity of shortest and longest nuclear axes, nuclear perimeter and nuclear shape compared to the latter. These results convince that important correlation between homogeneity of nuclear shape and biological behavior of tumor cells. Homogeneity of nuclear shape can be induced by protection of DNA and represents stemness.

Academic Significance and Societal Importance of the Research Achievements

病理診断や細胞診断は特に腫瘍医学の上で診断上極めて重要な役割を果たしているが,形態診断に最も重要な核異型に関してはその生じる原因が全く解明されていない.本課題は単に核の異型(正常からの隔たり)ではなく,核の均一性がDNA保護と強く関わっている事を想定してそれを証明し,さらにDNA保護作用は幹細胞性とも強く係わることから,核の均一性と腫瘍悪性度に注目してその解明を試み,glioblastomaではその一部を証明し,さらに他の癌腫においてもDNA保護作用を持つとされるTP53遺伝子変異の有無と核形態の均一性を証明した.診断に欠かせない核形態が腫瘍の生物学的態度との相関を指摘したことは意義深い.

Report

(4 results)
  • 2022 Annual Research Report   Final Research Report ( PDF )
  • 2021 Research-status Report
  • 2020 Research-status Report
  • Research Products

    (16 results)

All 2023 2022 2021 2020

All Journal Article (10 results) (of which Int'l Joint Research: 4 results,  Peer Reviewed: 7 results,  Open Access: 6 results) Presentation (6 results) (of which Invited: 6 results)

  • [Journal Article] Spindle Cell Variant of Ameloblastic Carcinoma: Another Example in a Japanese Male.2023

    • Author(s)
      Hiroshi Harada, Akio Tanaka, Masatomo Kimura, Shinsuke Ieda, Takeshi Wada, Tatsushi Matsumura, and Akira Kurose
    • Journal Title

      Hindawi Case Reports in Dentistry

      Volume: - Pages: 1-6

    • DOI

      10.1155/2023/8755637

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Utility of arterial spin labeling for objective assessment of intratumoral microvessels in diffuse hemispheric glioma, H3 G34R-mutant: a case report and literature review.2022

    • Author(s)
      Kitakami K, Beppu T, Sato Y, Kurose A, Ogasawara K.
    • Journal Title

      Radiology Case Reports

      Volume: 18 Issue: 3 Pages: 856-861

    • DOI

      10.1016/j.radcr.2022.11.074

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] 細胞動態解析と病理学2022

    • Author(s)
      黒瀬顕
    • Journal Title

      病理と臨床

      Volume: 40 Pages: 608-611

    • Related Report
      2022 Annual Research Report
  • [Journal Article] 術中迅速診断での反応性グリア増殖と低異型度星細胞腫2022

    • Author(s)
      黒瀬顕
    • Journal Title

      病理と臨床

      Volume: 40 Pages: 485-489

    • Related Report
      2022 Annual Research Report
  • [Journal Article] Primary adenosquamous carcinoma of the maxillary sinus: A unique example showing diverse morphology and differentiation2022

    • Author(s)
      Hiroshi Harada, Masanori Kitamura, Shin-ichi Nakatsuka, Keiichiro Honma, Akira Kurose.
    • Journal Title

      Human Pathology Reports

      Volume: -

    • Related Report
      2022 Annual Research Report
  • [Journal Article] BRAFV600E-positive cells as molecular markers of bone marrow disease in pediatric Langerhans cell histiocytosis.2022

    • Author(s)
      Ko Kudo, Tsutomu Toki, Rika Kanezaki, and Etsuro Ito
    • Journal Title

      Haematologica

      Volume: epub ahead Issue: 7 Pages: 000-000

    • DOI

      10.3324/haematol.2021.279857

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Telomere length was associated with grade and pathological features of meningioma2022

    • Author(s)
      Yamakawa K, Mukai Y, Ye J, Muto-Ishizuka M, Ito M, Tanimoto M, Suizu F, Asano K, Kurose A, Matsuda Y.
    • Journal Title

      Sci Rep

      Volume: 12 Issue: 1

    • DOI

      10.1038/s41598-022-10157-4

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Clinicopathological risk factors for a poor prognosis of primary central nervous system lymphoma in elderly patients in the Tohoku and Niigata area: a multicenter, retrospective, cohort study of the Tohoku Brain Tumor Study Group2022

    • Author(s)
      Asano K, Yamashita Y, Ono T, Natsumeda M, Beppu T, Matsuda K, Ichikawa M, Kanamori M, Matsuzaka M, Kurose A, Fumoto T, Saito K, Sonoda Y, Ogasawara K, Fujii Y, Shimizu H, Ohkuma H, Kitanaka C, Kayama T, Tominaga T.
    • Journal Title

      Brain Tumor Pathol

      Volume: 印刷中 Issue: 3 Pages: 139-150

    • DOI

      10.1007/s10014-022-00427-4

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] The Real-World status and risk factors for a poor prognosis in elderly patients with primary central nervous system malignant lymphomas: a multicenter, retrospective cohort study of the Tohoku Brain Tumor Study Group2022

    • Author(s)
      Asano K, Yamashita Y, Ono T, Natsumeda M, Beppu T, Matsuda K, Ichikawa M, Kanamori M, Matsuzaka M, Kurose A, Saito K, Sonoda Y, Ogasawara K, Fujii Y, Shimizu H, Ohkuma H, Kitanaka C, Kayama T, Tominaga T.
    • Journal Title

      Int J Clin Oncol

      Volume: 27 Issue: 1 Pages: 77-94

    • DOI

      10.1007/s10147-021-02042-3

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Combination chemoradiotherapy with temozolomide, vincristine, and interferon-β might improve outcomes regardless of O6-methyl-guanine-DNA-methyltransferase (MGMT) promoter methylation status in newly glioblastoma2021

    • Author(s)
      Asano K, Fumoto T, Matsuzaka M, Hasegawa S, Suzuki N, Akasaka K, Katayama K, Kamataki A, Kurose A, Ohkuma H.
    • Journal Title

      BMC Cancer

      Volume: 28 Issue: 1

    • DOI

      10.1186/s12885-021-08592-z

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] 非腫瘍性神経病変の見方2022

    • Author(s)
      黒瀬顕
    • Organizer
      第95会日本病理学会関東支部学術集会
    • Related Report
      2022 Annual Research Report
    • Invited
  • [Presentation] 脳神経外科医のニーズに応える病理診断を目指して2022

    • Author(s)
      黒瀬顕
    • Organizer
      第40回日本脳腫瘍病理学会
    • Related Report
      2022 Annual Research Report
    • Invited
  • [Presentation] Giant cell glioblastoma is a distinctive subtype of glioma characterized by vulnerability to DNA damage2021

    • Author(s)
      黒瀬顕
    • Organizer
      第39回日本脳腫瘍病理学会
    • Related Report
      2021 Research-status Report
    • Invited
  • [Presentation] 脳腫瘍診断2021

    • Author(s)
      黒瀬顕
    • Organizer
      第60回日本臨床細胞学会秋期大会
    • Related Report
      2021 Research-status Report
    • Invited
  • [Presentation] DNA傷害と核異型 (ワークショップ: ゲノム時代における形態学の新たな展開)2020

    • Author(s)
      黒瀬顕
    • Organizer
      第52回日本臨床分子形態学会総会・学術集会
    • Related Report
      2020 Research-status Report
    • Invited
  • [Presentation] 高悪性度グリオーマの病理とゲノム異常2020

    • Author(s)
      黒瀬顕
    • Organizer
      第109回日本病理学会総会
    • Related Report
      2020 Research-status Report
    • Invited

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Published: 2020-04-28   Modified: 2024-01-30  

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