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CRISPR/Cas9 screening of epigenetic factors relating to cancer malignancy

Research Project

Project/Area Number 19K07686
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 InstitutionKanazawa University

Principal Investigator

Ishimura Akihiko  金沢大学, がん進展制御研究所, 助教 (80375261)

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: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2020: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2019: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Keywordsエピジェネティクス / がん悪性化 / 乳がん / がん細胞 / がん悪性進展 / がん / 悪性化
Outline of Research at the Start

これまでエピジェネティック制御異常が、乳がんの進展・予後・薬剤耐性などと密接に関わることが示唆されてきた。最近、エピジェネティック制御因子が、遺伝子異常によって誘導される病変に直接作用する例が報告されつつある。しかし、腫瘍悪性化におけるエピジェネティック異常と遺伝子異常の関係は、意外なほど理解されていない。本研究では、“目的特化型 CRISPR/Cas9 スクリーニング法”によって、乳がん細胞内でがん悪性形質を増悪させるエピジェネティック制御因子を同定する。そして、これら因子と遺伝子異常の関係性を紐解き、エピジェネティック制御の可塑性を標的とする、がん悪性進展の新しい治療戦略の開発を目指す。

Outline of Final Research Achievements

Epigenetic mutations in tumors alter the genomic environment, leading to the activation of oncogenes or inactivation of tumor suppressor genes. The alteration is involved in the acquisition of various cancer malignant phenotypes such as invasion, metastasis, stemness and drug resistance.
In order to identify essential epigenetic regulators relating to breast cancer malignancy, we performed CRISPR/Cas9 screening using a lentiviral sgRNA library composed of 120 kinds of epigenetic regulators. As a result, we identified KDM3B, one of the histone demethylases, as a breast cancer malignant factor. Cell biological studies and clinical data strongly suggest that KDM3B is a novel tumor suppressor in malignant breast cancer.

Academic Significance and Societal Importance of the Research Achievements

がんの発生・悪性進展過程において、遺伝子自身の異常のみならず、その遺伝子を取り巻く環境変化(エピジェネティック変異)が高頻度に報告されている。しかし両変異の相互作用とそれらが及ぼす影響は、意外なほど理解されていない。本スクリーニングでは、ゲノム編集によって任意に遺伝子変異を導入した細胞と(対象を絞った)sgRNAを用いることで、これまで報告のないエピジェネティック制御因子を新規がん悪性化因子として同定できた。本スクリーニング法は、様々なタイプのがん悪性形質獲得(薬剤耐性など)に関わる因子の探索にも展開でき、エピジェネティック制御の可逆性に注目した新たな治療戦略の確立に貢献できる。

Report

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

    (6 results)

All 2021 2020 2019

All Journal Article (3 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 3 results,  Open Access: 3 results) Presentation (3 results)

  • [Journal Article] KDM2B is involved in the epigenetic regulation of TGF-β-induced epithelial-mesenchymal transition in lung and pancreatic cancer cell lines2021

    • Author(s)
      Wanna-Udom Sasithorn、Terashima Minoru、Suphakhong Kusuma、Ishimura Akihiko、Takino Takahisa、Suzuki Takeshi
    • Journal Title

      Journal of Biological Chemistry

      Volume: 296 Pages: 100213-100213

    • DOI

      10.1074/jbc.ra120.015502

    • Related Report
      2021 Annual Research Report 2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Transient IGF-1R inhibition combined with osimertinib eradicates AXL-low expressing EGFR mutated lung cancer2020

    • Author(s)
      Wang Rong、Yamada Tadaaki、Kita Kenji、Taniguchi Hirokazu、Arai Sachiko、Fukuda Koji、Terashima Minoru、Ishimura Akihiko、Nishiyama Akihiro、Tanimoto Azusa、Takeuchi Shinji、Ohtsubo Koshiro、Wang Wei、Suzuki Takeshi、Yano Seiji et. al.
    • Journal Title

      Nature Communications

      Volume: 11 Issue: 1 Pages: 4607-4607

    • DOI

      10.1038/s41467-020-18442-4

    • NAID

      120007186801

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] The m6A Methyltransferase METTL3 Contributes to Transforming Growth Factor-beta-induced Epithelial-Mesenchymal Transition of Lung Cancer Cells Through the Regulation of JUNB2020

    • Author(s)
      Wanna-udom Sasithorn、Terashima Minoru、Hanbing Lyu、Ishimura Akihiko、Takahisa Takino、Matomo Sakari、Toshifumi Tsukahara、Suzuki Takeshi
    • Journal Title

      Biochemical and Biophysical Research Communications

      Volume: 524 Issue: 1 Pages: 150-155

    • DOI

      10.1016/j.bbrc.2020.01.042

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] 薬剤耐性に関わるエピジェネティック制御因子の探索2021

    • Author(s)
      Ishimura A, Batbayar G, Lyu H, Kusuma S, Wanna-udom S, Terashima M, Yano S and Suzuki T
    • Organizer
      第44回分子生物学学会年会
    • Related Report
      2021 Annual Research Report
  • [Presentation] CRISPR/Cas9 screening of epigenetic factors related to breast cancer malignancy2020

    • Author(s)
      Ishimura A, Wanna-udom S., Tange S, Lyu H, Batbayar G, Terashima M and Suzuki T
    • Organizer
      第43回分子生物学学会年会
    • Related Report
      2020 Research-status Report
  • [Presentation] Screening of epigenetic regulators related to breast cancer malignancy2019

    • Author(s)
      Akihiko Ishimura, Sasithorn Wanna-udom, Shoichiro Tange, Lyu Hanbing, Minoru Terashima and Takeshi Suzuki
    • Organizer
      分子性生物学学会
    • Related Report
      2019 Research-status Report

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

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