• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to previous page

Innovative drug development targeting specific DNA repair pathway in cancer cells

Research Project

Project/Area Number 20K12172
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 63020:Radiation influence-related
Research InstitutionUniversity of Occupational and Environmental Health, Japan

Principal Investigator

Kohzaki Masaoki  産業医科大学, 産業生態科学研究所, 講師 (90717977)

Co-Investigator(Kenkyū-buntansha) 安藤 隆幸  静岡県環境衛生科学研究所, 医薬食品部, 創薬プロジェクトリーダー・主査 (40402226)
石川 吉伸  湘南医療大学, 薬学部医療薬学科, 教授 (00305004)
Project Period (FY) 2020-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2022: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2021: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2020: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
KeywordsDNA修復 / RECQL4 / DNA損傷 / 抗がん剤 / RAD52 / 発がん / 標的阻害 / SSA / DNA修復経路 / 化合物合成 / 感受性 / マウス実験 / BRCA変異がん / 担がんマウス / スクリーニング系 / 極低用量 / 経口投与 / 標的治療 / ゲノム不安定性 / DNA損傷応答 / 遺伝性疾患
Outline of Research at the Start

高騰化する抗がん剤開発費や超高齢化社会に直面している我が国では、安全で安価な抗がん剤開発は喫緊の課題である。我々は、希少がんの骨肉腫を好発するRECQL4欠損遺伝性疾患患者のモデル細胞を樹立し、がん治療に伴うDNA損傷の修復過程で、RECQL4を欠損するがん細胞が、エラーが大きいDNA修復経路因子のRAD52を亢進する特徴を発見した。この特徴は、極低用量のRAD52阻害剤投与で標的阻害が可能なことから、エラーが大きいDNA修復を抑え、かつ毒性がほとんど無い抗がん剤開発が期待できる。本研究では、独自に樹立した実験系を最大限に活用して、社会的波及効果が高い、安全で安価な革新的抗がん剤を開発する。

Outline of Final Research Achievements

In recent years, PARP inhibitors, which target specific DNA repair pathways that are easily activated in some cancer cells have attracted attention as promising candidates for anticancer drugs. In this study, we utilized model cells of patients with RECQL4-deficient hereditary diseases that frequently develop osteosarcoma, characterized by upregulation of an error-prone DNA repair pathway factor RAD52. We identified potential lead compounds exhibiting significant antitumor activity.

Academic Significance and Societal Importance of the Research Achievements

本研究から、新規のRAD52阻害剤は極低用量の経口投与で抗腫瘍効果を呈することが担がんマウス実験で明らかになった。極低用量の経口投与は副作用の可能性が少ないことや侵襲性が無いことから、抗がん剤としてのRAD52阻害剤単剤又は他のがん治療薬との併用投与は、人生100年時代における働きながらがん治療を実施する人口が増えていく中で、重要な治療法となることが考えられる。

Report

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

    (48 results)

All 2023 2022 2021 2020 2019 Other

All Journal Article (10 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 9 results,  Open Access: 8 results) Presentation (31 results) (of which Int'l Joint Research: 12 results,  Invited: 10 results) Remarks (4 results) Patent(Industrial Property Rights) (3 results)

  • [Journal Article] Relationship between haematological data and radiation doses of TEPCO workers before and after the FDNNP accident2023

    • Author(s)
      Okazaki Ryuji、Kohzaki Masaoki、Kai Michiaki、Jiang Ying、Kubo Tatsuhiko、Ootsuyama Akira、Sado Toshihiko、Suzuki Katsunori、Tateishi Seiichiro、Mori Koji
    • Journal Title

      Journal of Radiation Research

      Volume: 64 Issue: 2 Pages: 261-272

    • DOI

      10.1093/jrr/rrac089

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Mammalian Resilience Revealed by a Comparison of Human Diseases and Mouse Models Associated With DNA Helicase Deficiencies2022

    • Author(s)
      Kohzaki Masaoki
    • Journal Title

      Frontiers in Molecular Biosciences

      Volume: 9 Pages: 934042-934042

    • DOI

      10.3389/fmolb.2022.934042

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Long Bones Exhibit Adaptive Responses to Chronic Low‐Dose‐Rate Ionizing Radiation despite its Lifespan‐Shortening and Carcinogenic Effects on <scp>C57BL</scp> /6 Mice2022

    • Author(s)
      Kohzaki Masaoki、Ootsuyama Akira、Abe Toshiaki、Tsukamoto Manabu、Umata Toshiyuki、Okazaki Ryuji
    • Journal Title

      JBMR Plus

      Volume: 6 Issue: 12 Pages: 1-13

    • DOI

      10.1002/jbm4.10688

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] 遺伝性疾患モデルマウスの産後生存率と寿命の比較研究から明らかになった哺乳類レジリエンス2022

    • Author(s)
      香崎正宙
    • Journal Title

      RBC News Letter

      Volume: 171 Pages: 2-4

    • Related Report
      2021 Research-status Report
  • [Journal Article] Contribution of radiation education to anxiety reduction among Fukushima Daiichi Nuclear Power Plant workers: a cross sectional study using a text mining method2021

    • Author(s)
      Ryuji Okazaki, Kenichi Satoh, Arifumi Hasegawa, Naoki Matsuda, Takaaki Kato, Reiko Kanda, Yoshiya Shimada, Takuya Hayashi, Masaoki Kohzaki, Kosuke Mafune, Koji Mori
    • Journal Title

      J Radiation Res

      Volume: 63 Issue: 1 Pages: 44-50

    • DOI

      10.1093/jrr/rrab101

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Comparison of the fertility of tumor suppressor gene-deficient C57BL/6 mouse strains reveals stable reproductive aging and novel pleiotropic gene2021

    • Author(s)
      Kohzaki Masaoki、Ootsuyama Akira、Umata Toshiyuki、Okazaki Ryuji
    • Journal Title

      Scientific Reports

      Volume: 11 Issue: 1 Pages: 12357-12369

    • DOI

      10.1038/s41598-021-91342-9

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] アブスコパル効果研究の現状と放射線治療への展望2021

    • Author(s)
      香崎正宙
    • Journal Title

      放射線生物研究

      Volume: 56 Pages: 37-54

    • Related Report
      2021 Research-status Report
    • Peer Reviewed
  • [Journal Article] Current status of abscopal effect research and prospects for radiation therapy2021

    • Author(s)
      Masaoki Kohzaki
    • Journal Title

      Radiation Biology Research Communications

      Volume: 56 Pages: 37-54

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Questionnaire Survey of Fukushima Daiichi Nuclear Power Plant Workers in 2016 on Knowledge and Anxiety About Radiation2020

    • Author(s)
      林卓哉, 真船浩介, 松田尚樹, 長谷川有史, 加藤尊秋, 神田玲子, 島田義也, 佐藤健一, 森晃爾, 立石清一郎, 香﨑正宙, 岡﨑 龍史
    • Journal Title

      Journal of UOEH

      Volume: 42 Issue: 4 Pages: 339-346

    • DOI

      10.7888/juoeh.42.339

    • NAID

      130007948934

    • ISSN
      0387-821X, 2187-2864
    • Year and Date
      2020-12-01
    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Human RECQL4 represses the RAD52‐mediated single‐strand annealing pathway after ionizing radiation or cisplatin treatment2019

    • Author(s)
      Kohzaki Masaoki、Ootsuyama Akira、Sun Lue、Moritake Takashi、Okazaki Ryuji
    • Journal Title

      International Journal of Cancer

      Volume: 146 Issue: 11 Pages: 3098-3113

    • DOI

      10.1002/ijc.32670

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] 非照射組織における発がんメカニズムの本態の理解2023

    • Author(s)
      香崎正宙
    • Organizer
      第6回バイスタンダー効果とラジカル研究会
    • Related Report
      2022 Annual Research Report
    • Invited
  • [Presentation] Comparison of the fertility of tumor suppressor gene-deficient C57BL/6 mouse strains reveals stable reproductive aging and novel pleiotropic gene2023

    • Author(s)
      Masaoki Kohzaki
    • Organizer
      ATW2023, Kyoto
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] ほ乳類の意外なたくましさと健康2023

    • Author(s)
      香崎正宙
    • Organizer
      北九州市民カレッジ
    • Related Report
      2022 Annual Research Report
  • [Presentation] How can we manage occupational health at nuclear power plants in the vicinity of large cities?2023

    • Author(s)
      Masaoki Kohzaki
    • Organizer
      Excahnging meeting with Ulsan University Hospital, Occupational Environmental Health Center
    • Related Report
      2022 Annual Research Report
  • [Presentation] Spontaneous p53 activation in aged C57BL/6 mice mitigates the lifespan-extending adaptive response induced by low-dose ionizing radiation2022

    • Author(s)
      Masaoki Kohzaki, Keiji Suzuki, Akira Ootsuyama, Ryuji Okazaki
    • Organizer
      The 45th Annual Meeting of the Molecular Biology Society of Japan
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 加齢による p53 機能の変化と放射線適応応答との関連性2022

    • Author(s)
      香崎 正宙, 鈴木 啓司, 大津山 彰, 岡﨑 龍史
    • Organizer
      第 59 回放射線影響懇話会
    • Related Report
      2022 Annual Research Report
  • [Presentation] p53 activation in aged mice mitigates the lifespan-extending adaptive response induced by low-dose ionizing radiation2022

    • Author(s)
      Masaoki Kohzaki, Keiji Suzuki, Akira Ootsuyama, Ryuji Okazaki
    • Organizer
      The 81st Annual Meeting of the Japanese Cancer Association
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Spontaneous p53 activation in aged C57BL/6 mice mitigates the lifespan-extending adaptive response induced by low-dose ionizing radiation2022

    • Author(s)
      KOHZAKI Masaoki, SUZUKI Keiji, OOTSUYAMA Akira, OKAZAKI Ryuji
    • Organizer
      The 65th Annual Meeting of the Japanese Radiation Research Society
    • Related Report
      2022 Annual Research Report
    • Invited
  • [Presentation] DNA代謝酵素欠損や加齢に対する哺乳類のレジリエンス2022

    • Author(s)
      香崎 正宙
    • Organizer
      GDN多分野交流セミナー「老化研究@九州2022」オーガナイザー
    • Related Report
      2022 Annual Research Report
    • Invited
  • [Presentation] アブスコパル効果研究の現状と放射線治療や温熱療法への応用の可能性について2022

    • Author(s)
      香﨑 正宙, 岡﨑 龍史
    • Organizer
      日本ハイパーサーミア学会第39回大会
    • Related Report
      2022 Annual Research Report
    • Invited
  • [Presentation] Spontaneous p53 activation in aged C57BL/6 mice mitigates the lifespan-extending adaptive response induced by low-dose ionizing radiation2022

    • Author(s)
      Masaoki Kohzaki
    • Organizer
      The 45th Annual Meeting of Japan Society for Biomedical Gerontology
    • Related Report
      2022 Annual Research Report
  • [Presentation] 希少な遺伝性疾患に着目した研究を通して得られた知見2022

    • Author(s)
      香崎 正宙
    • Organizer
      明星大学 理工学部学生対象講演会
    • Related Report
      2022 Annual Research Report
    • Invited
  • [Presentation] Unexpected mammalian resilience discovered in a disease-model mouse may provide clues to a long-lived and healthy life2022

    • Author(s)
      Masaoki Kohzaki, Akira Ootsuyama, Toshiyuki Umata, Ryuji Okazaki
    • Organizer
      The 30th Japan-China-Korea Conference on Occupational Health
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Comparative analysis of fertility in tumor suppressor gene-deficient C57BL/6 mouse strains revealed novel aging possibilities2022

    • Author(s)
      Masaoki Kohzaki, Akira Ootsuyama, Toshiyuki Umata, Ryuji Okazaki
    • Organizer
      The 95th Annual Meeting of Japan Society for Occupational Health
    • Related Report
      2022 Annual Research Report
  • [Presentation] 放射線適応応答とゲノム安定性維持機構の研究からみえてきた放射線生物学の新展開2022

    • Author(s)
      香崎 正宙
    • Organizer
      環境科学技術研究所、生物影響セミナー
    • Related Report
      2021 Research-status Report
    • Invited
  • [Presentation] [3P-0601]腫瘍抑制遺伝子欠損C57BL/6マウス系統の生殖能力比較解析による安定した生殖能力と新規多面性遺伝子の同定2021

    • Author(s)
      香﨑 正宙, 大津山 彰, 馬田 敏幸, 岡﨑 龍史
    • Organizer
      第44回日本分子生物学会年会 2021年12月3日
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] [2PW-03-4]Comparison of the fertility of tumor suppressor gene-deficient C57BL/6 mouse strains reveals stable reproductive aging and novel pleiotropic gene.2021

    • Author(s)
      Masaoki Kohzaki, Akira Ootsuyama, Toshiyuki Umata, Ryuji Okazaki
    • Organizer
      第44回日本分子生物学会年会
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] ゲノム不安定性が増大する遺伝的背景で、われわれ哺乳類はどうやって長生きできるのか?2021

    • Author(s)
      香崎 正宙
    • Organizer
      Genome Damage Network Workshop 2021 -Online Retreat-
    • Related Report
      2021 Research-status Report
    • Invited
  • [Presentation] がん細胞の新しい弱点を標的とした抗がん剤の開発2021

    • Author(s)
      香崎 正宙
    • Organizer
      科学技術振興機構主催 ライフサイエンス~医療系大学~新技術説明会
    • Related Report
      2021 Research-status Report
  • [Presentation] 遺伝性疾患モデルマウス系統の生殖機能と生存寿命との比較解析による新規多面性発現遺伝子の同定2021

    • Author(s)
      香﨑 正宙, 大津山 彰, 馬田 敏幸, 岡﨑 龍史
    • Organizer
      第26 回 DNA 複製・組換え・修復ワークショップ
    • Related Report
      2021 Research-status Report
  • [Presentation] がん抑制遺伝子欠損マウスの生殖能力の比較解析を利用した新規多面性発現遺伝子の同定2021

    • Author(s)
      香﨑 正宙, 大津山 彰, 馬田 敏幸, 岡﨑 龍史
    • Organizer
      第39回 産業医科大学学会
    • Related Report
      2021 Research-status Report
  • [Presentation] Comparison of the fertility of tumor suppressor gene- deficient C57BL/6 mouse strains reveals stable reproductive aging and novel pleiotropic gene2021

    • Author(s)
      Masaoki Kohzaki;Akira Ootsuyama;Toshiyuki Umata;Ryuji Okazaki
    • Organizer
      第80回日本癌学会学術総会
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] 欧州留学での経験と意義2021

    • Author(s)
      香崎 正宙
    • Organizer
      日本放射線影響学会 第64回大会
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Comparison of the fertility of tumor suppressor gene- deficient C57BL/6 mouse strains reveals stable reproductive aging and novel pleiotropic gene.2021

    • Author(s)
      Masaoki Kohzaki, Akira Ootsuyama, Toshiyuki Umata, Ryuji Okazaki
    • Organizer
      日本放射線影響学会 第64回大会
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] 研究活動について-健康支援部門2021

    • Author(s)
      香崎 正宙
    • Organizer
      産業医科大学 産業生態科学研究所 第29回合同研究発表会
    • Related Report
      2021 Research-status Report
    • Invited
  • [Presentation] アブスコパル効果研究の現状と放射線治療への展望2021

    • Author(s)
      香崎正宙
    • Organizer
      放射線医学総合研究所(web開催)
    • Related Report
      2021 Research-status Report
    • Invited
  • [Presentation] 誤りがちDNA修復経路阻害剤スクリーニング法の確立と新規がん治療薬の開発2021

    • Author(s)
      香崎 正宙
    • Organizer
      第7回DSANJ Digital Bio Conference 2021
    • Related Report
      2020 Research-status Report
  • [Presentation] Human RECQL4 represses RAD52-mediated single-strand annealing pathway after ionizing radiation/cisplatin treatment2020

    • Author(s)
      Masaoki Kozaki
    • Organizer
      第43回日本分子生物学会年会
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research
  • [Presentation] RECQL4は放射線やシスプラチン処理後にRAD52を介した一本鎖アニーリングDNA修復経路の活性化を抑制する2020

    • Author(s)
      香崎 正宙
    • Organizer
      日本放射線影響学会 第63回大会
    • Related Report
      2020 Research-status Report
  • [Presentation] Human RECQL4 represses RAD52-mediated single-strand annealing pathway after ionizing radiation/cisplatin treatment2020

    • Author(s)
      Masaoki Kohzaki
    • Organizer
      第79回日本癌学会学術総会
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research
  • [Presentation] Session III, Chair2020

    • Author(s)
      Masaoki Kohzaki
    • Organizer
      2020年1月10日  第19回韓国カソリック大学・産業医科大学産業生態科学研究所 定期交流会第24回産業生態科学研究所・労働安全衛生総合研究所 研究交流会 合同開催
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research
  • [Remarks] 香崎正宙のResearchmap

    • URL

      https://researchmap.jp/masaoki-k/

    • Related Report
      2022 Annual Research Report
  • [Remarks] DNA修復学研究のメンバー

    • URL

      https://shibataxlab.com/gdn/

    • Related Report
      2022 Annual Research Report 2021 Research-status Report
  • [Remarks] 産業医科大学のHP

    • URL

      https://www.uoeh-u.ac.jp/facilities/labo/kenko/hosyasen/staff.html

    • Related Report
      2022 Annual Research Report 2021 Research-status Report
  • [Remarks] 香崎 正宙のResarchmap

    • URL

      https://researchmap.jp/masaoki-k

    • Related Report
      2021 Research-status Report
  • [Patent(Industrial Property Rights)] スラミンを含む組成物2021

    • Inventor(s)
      香崎正宙・安藤隆幸
    • Industrial Property Rights Holder
      香崎正宙・安藤隆幸
    • Industrial Property Rights Type
      特許
    • Industrial Property Number
      2021-044471
    • Filing Date
      2021
    • Related Report
      2021 Research-status Report
  • [Patent(Industrial Property Rights)] スラミンを含む組成物2021

    • Inventor(s)
      香﨑正宙 ・ 安藤隆幸
    • Industrial Property Rights Holder
      産業医大 ・ ファルマバレー
    • Industrial Property Rights Type
      特許
    • Industrial Property Number
      2021-044471
    • Filing Date
      2021
    • Related Report
      2020 Research-status Report
  • [Patent(Industrial Property Rights)] SSA阻害活性を有する化合物の試験方法2020

    • Inventor(s)
      香﨑正宙 ・ 安藤隆幸
    • Industrial Property Rights Holder
      産業医大 ・ ファルマバレー
    • Industrial Property Rights Type
      特許
    • Industrial Property Number
      2020-031591
    • Filing Date
      2020
    • Related Report
      2020 Research-status Report

URL: 

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

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi