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Generation of a novel model to elucidate the function of BRCA2 mutations and binding molecules in tumors

Research Project

Project/Area Number 18H02334
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Review Section Basic Section 42020:Veterinary medical science-related
Research InstitutionHokkaido University

Principal Investigator

Morimatsu Masami  北海道大学, 獣医学研究院, 教授 (70241370)

Co-Investigator(Kenkyū-buntansha) 落合 和彦  日本獣医生命科学大学, 獣医学部, 准教授 (30550488)
安居院 高志  北海道大学, 獣医学研究院, 教授 (00212457)
Project Period (FY) 2018-04-01 – 2022-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥16,640,000 (Direct Cost: ¥12,800,000、Indirect Cost: ¥3,840,000)
Fiscal Year 2021: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
Fiscal Year 2020: ¥3,640,000 (Direct Cost: ¥2,800,000、Indirect Cost: ¥840,000)
Fiscal Year 2019: ¥3,380,000 (Direct Cost: ¥2,600,000、Indirect Cost: ¥780,000)
Fiscal Year 2018: ¥7,150,000 (Direct Cost: ¥5,500,000、Indirect Cost: ¥1,650,000)
KeywordsBRCA2 / Rad51 / 乳腺腫瘍 / 前立腺癌 / RAD51 / 腫瘍発症機構 / ゲノム不安定化 / 疾患モデル / 分子間相互作用 / アンドロゲン受容体 / PALB2 / ゲノム不安定 / BRCAl2 / p53
Outline of Final Research Achievements

To elucidate the effects of the canine tumor suppressor protein BRCA2 on tumorigenesis, we focused on the regulation of BRCA2 expression, a group of binding molecules such as RAD51, and sex hormone receptor-related molecules.
Splicing variants of canine BRCA2 were found in tissues and cell lines, and similar variants were found in human cell lines. We have elucidated the effects of mutations in BRCA2 and its interacting molecules on the function of the gene. We compared the C-terminal RAD51-binding domain of canine and human BRCA2 and identified a core motif, and found that the C-terminal RAD51-binding domain of BRCA2 increased resistance to X-irradiation and mitomycin C treatment.

Academic Significance and Societal Importance of the Research Achievements

イヌの獣医療において、乳腺腫瘍は雌イヌで全腫瘍の約半数を占めて発症頻度が高く、その約半数が悪性となる。本研究では、BRCA2スプライシングバリアントを調べ、イントロン1においてヒトとイヌで保存された配列にサイレンサーとして機能する領域があることを見出した。BRCA2のC末端RAD51結合ドメインの変異(S3323N)が機能的に中立であることや、BRCA2と相互作用するp53の変異による四量体形成不全がDNA損傷時の細胞周期や細胞死に影響すること等を示した。これらの知見は、イヌ乳腺腫瘍の獣医学等に有益な情報を提供すると考えられる。

Report

(5 results)
  • 2022 Final Research Report ( PDF )
  • 2021 Annual Research Report
  • 2020 Annual Research Report
  • 2019 Annual Research Report
  • 2018 Annual Research Report
  • Research Products

    (20 results)

All 2023 2022 2021 2020 2019 2018

All Journal Article (9 results) (of which Peer Reviewed: 9 results,  Open Access: 7 results) Presentation (11 results)

  • [Journal Article] A Highly Conserved Region in BRCA2 Suppresses the RAD51-Interaction Activity of BRC Repeats2023

    • Author(s)
      Zhu Zida、Kitano Taisuke、Morimatsu Masami、Ochiai Kazuhiko、Ishiguro-Oonuma Toshina、Oosumi Kosuke、Lin Xianghui、Orino Koichi、Yoshikawa Yasunaga
    • Journal Title

      Veterinary Sciences

      Volume: 10 Issue: 2 Pages: 145-145

    • DOI

      10.3390/vetsci10020145

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] BRCA2 C-Terminal RAD51-Binding Domain Confers Resistance to DNA-Damaging Agents2022

    • Author(s)
      Zhu Zida、Kitano Taisuke、Morimatsu Masami、Tanaka Arisa、Morioka Ryo、Lin Xianghui、Orino Koichi、Yoshikawa Yasunaga
    • Journal Title

      International Journal of Molecular Sciences

      Volume: 23 Issue: 7 Pages: 4060-4060

    • DOI

      10.3390/ijms23074060

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] In vitro anticancer effects of alpelisib against PIK3CA-mutated canine hemangiosarcoma cell lines2022

    • Author(s)
      Maeda M, Ochiai K, Michishita M, Morimatsu M, Sakai H, Kinoshita N, Sakaue M, Onozawa E, Azakami D, Yamamoto M, Ishioka K, Sadahira T, Watanabe M, Tanaka Y.
    • Journal Title

      Oncology Reports

      Volume: 47 Issue: 4 Pages: 84-84

    • DOI

      10.3892/or.2022.8295

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Canine Mammary Tumor Cell Lines Derived from Metastatic Foci Show Increased RAD51 Expression but Diminished Radioresistance via p21 Inhibition2022

    • Author(s)
      Shimakawa Kei、Ochiai Kazuhiko、Hirose Sachi、Tanabe Eri、Michishita Masaki、Sakaue Motoharu、Yoshikawa Yasunaga、Morimatsu Masami、Tajima Tsuyoshi、Watanabe Masami、Tanaka Yoshikazu
    • Journal Title

      Veterinary Sciences

      Volume: 9 Issue: 12 Pages: 703-703

    • DOI

      10.3390/vetsci9120703

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Reduced translation efficiency due to novel splicing variants in 5′ untranslated region and identification of novel cis-regulatory elements in canine and human BRCA22021

    • Author(s)
      Yoshikawa Yasunaga、Kozuma Hajime、Morimatsu Masami、Sugawara Kaori、Orino Koichi
    • Journal Title

      BMC Molecular and Cell Biology

      Volume: 22 Issue: 1 Pages: 2-2

    • DOI

      10.1186/s12860-020-00336-4

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Identification of the core motif of the BRCA2 C-terminal RAD51-binding domain by comparing canine and human BRCA22021

    • Author(s)
      YOSHIKAWA Yasunaga、MORIMATSU Masami、OCHIAI Kazuhiko、ISHIGURO-OONUMA Toshina、MORIOKA Ryo、OKUDA Kento、ORINO Koichi
    • Journal Title

      Journal of Veterinary Medical Science

      Volume: 83 Issue: 5 Pages: 759-766

    • DOI

      10.1292/jvms.21-0006

    • NAID

      130008036476

    • ISSN
      0916-7250, 1347-7439
    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] The number of glutamines in the N‐terminal of the canine androgen receptor affects signalling intensities2020

    • Author(s)
      Ochiai Kazuhiko、Sutijarit Samak、Uemura Mitsuki、Morimatsu Masami、Michishita Masaki、Onozawa Eri、maeda Marika、Sasaki Takanori、Watanabe Masami、Tanaka Yoshikazu、Omi Toshinori
    • Journal Title

      Veterinary and Comparative Oncology

      Volume: 19 Issue: 2 Pages: 399-403

    • DOI

      10.1111/vco.12663

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Journal Article] The canine RAD51 mutation leads to the attenuation of interaction with PALB2.2019

    • Author(s)
      Uemura M, Ochiai K, Morimatsu M, Michishita M, Onozawa E, Azakami D, Uno Y, Yoshikawa Y, Sasaki T, Watanabe M, Omi T.
    • Journal Title

      Veterinary and Comparative Oncology

      Volume: - Issue: 2 Pages: 1-9

    • DOI

      10.1111/vco.12542

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Endogenous Leu332Gln mutation in p53 disrupts the tetramerization ability in a canine mammary gland tumor cell line.2018

    • Author(s)
      Ochiai K, Azakami D, Morimatsu M, Hirama H, Kawakami S, Nakagawa T, Michishita M, Egusa AS, Sasaki T, Watanabe M, Omi T.
    • Journal Title

      Oncol Rep

      Volume: 40 Pages: 488-494

    • DOI

      10.3892/or.2018.6409

    • NAID

      120006551592

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access
  • [Presentation] p53四量体形成ドメイン変異イヌ乳腺腫瘍由来細胞株の性状解析2022

    • Author(s)
      廣瀨紗千, 落合和彦, 岩崎(前田)まりか, 道下正貴, 森松正美, 田中良和
    • Organizer
      第165回日本獣医学会学術集会
    • Related Report
      2021 Annual Research Report
  • [Presentation] BRCA2 C-terminal RAD51-binding domain confers resistance to DNA-damaging agents2022

    • Author(s)
      朱 子達, 北野泰佑, 森松正美, 折野宏一, 吉川 泰永
    • Organizer
      第165回日本獣医学会学術集会
    • Related Report
      2021 Annual Research Report
  • [Presentation] イヌとヒトで異なるRAD51分子構造がDNA相同組換え修復効率におよぼす影響の検討2021

    • Author(s)
      植村 光希 , 落合 和彦 , 道下 正貴 , 吉川 泰永 , 前田 まりか , 森松 正美 , 近江 俊徳 , 田中 良和
    • Organizer
      第164回日本獣医学会学術集会
    • Related Report
      2020 Annual Research Report
  • [Presentation] 癌抑制遺伝子Brca2のイントロン1における発現調節機構の解析2021

    • Author(s)
      上妻 創, 吉川 泰永, 森松 正美, 落合 和彦, 折野 宏一
    • Organizer
      第164回日本獣医学会学術集会
    • Related Report
      2020 Annual Research Report
  • [Presentation] イヌRAD51変異が複合体形成におよぼす影響の検討2019

    • Author(s)
      植村光希, 落合和彦, 森松正美, 柏木伸旭, 宇埜友美子, 道下正貴, 呰上大吾, 小野沢栄里, 近江俊徳
    • Organizer
      日本獣医学会学術集会
    • Related Report
      2019 Annual Research Report
  • [Presentation] BRCA2のC末端RAD51結合領域におけるRAD51との結合に影響を与えるアミノ酸残基の同定2019

    • Author(s)
      吉川泰永, 森松正美, 落合和彦, 田中杏里咲, 折野宏一
    • Organizer
      日本獣医学会学術集会
    • Related Report
      2019 Annual Research Report
  • [Presentation] がん抑制遺伝子p53に変異を有するイヌ乳腺腫瘍細胞に対する血管新生阻害薬の抗腫瘍効果の解析2019

    • Author(s)
      中沢綾香, 石黒(大沼)俊名, 落合和彦, 森松正美, 木崎景一郎
    • Organizer
      日本獣医学会学術集会
    • Related Report
      2019 Annual Research Report
  • [Presentation] MUC16発現腫瘍に対する可溶型Siglec-9の抗腫瘍効果の検討2019

    • Author(s)
      植田有希, 富岡幸子, 竹内崇師, 八木田晴香, 尾崎絹代, 山本沙代, 森松正美, 笛吹達史, 小野悦郎
    • Organizer
      日本獣医学会学術集会
    • Related Report
      2019 Annual Research Report
  • [Presentation] イヌ乳腺腫瘍細胞株で生じたp53遺伝子変異の検出と機能解析2018

    • Author(s)
      落合和彦, 平間日奈子, 森松正美, 川上翔太, 道下正貴, 中川貴之, 呰上大吾, 稲垣健志, 坂本敦司, 近江俊徳
    • Organizer
      日本獣医学会学術集会
    • Related Report
      2018 Annual Research Report
  • [Presentation] 腫瘍抑制遺伝子BRCA2のエキソン11 における新規腫瘍関連変異の検索2018

    • Author(s)
      吉川泰永, 大隅恒佑, 森松正美, 折野宏一
    • Organizer
      日本獣医学会学術集会
    • Related Report
      2018 Annual Research Report
  • [Presentation] がん抑制遺伝子p53に変異を有するイヌ乳腺腫瘍由来細胞の性状解析2018

    • Author(s)
      中沢綾香, 石黒(大沼)俊名, 落合和彦, 森松正美, 木崎景一郎
    • Organizer
      日本獣医学会学術集会
    • Related Report
      2018 Annual Research Report

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Published: 2018-04-23   Modified: 2024-01-30  

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