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The analysis of the p53 isoforms in hepatocellular carcinoma cells using endogenous gene modification.

Research Project

Project/Area Number 16K09381
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Gastroenterology
Research InstitutionAichi Medical University

Principal Investigator

NAKAO HARUHISA  愛知医科大学, 医学部, 教授 (60326139)

Co-Investigator(Kenkyū-buntansha) 太田 明伸  愛知医科大学, 医学部, 講師 (30438048)
稲熊 真悟  愛知医科大学, 医学部, 講師 (80410786)
Project Period (FY) 2016-04-01 – 2019-03-31
Project Status Completed (Fiscal Year 2018)
Budget Amount *help
¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000)
Fiscal Year 2018: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2017: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2016: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Keywordsp53 / isoform / CRSPR/CAS9 / 肝癌 / p53α / p53β / 細胞周期 / アポトーシス / p53 isoform / 肝細胞癌 / delta40p53 / delta133p53 / p53beta / cellular senescence / tumor suppression / p53アイソフォーム / TP53遺伝子 / CRSPR/Cas9 / 内在性遺伝子改変 / 細胞老化 / 細胞増殖能 / CRISPR/Cas9 / 遺伝子ターゲッティング法
Outline of Final Research Achievements

We established several hepatocellular carcinoma cell lines of which endogenous TP53 alleles were modified using CRSPR/CAS9 system, and analyzed the function of several p53 splicing isoforms. We reported that △40p53α suppressed tumor cell proliferation and induced cellular senescence in hepatocellular carcinoma cells (J cell Sci 2017; 130(3): 614-625). △133p53α and △133p53β, which have same structure in C-terminal but different in N-terminal, also showed the function as same as △40p53α. However, △133p53αwas combined with △133p53α, but △133p53βwas not. The cDNA array analysis suggested that target gene expression pattern to each isoform was different. In the animal experiment of p53 isoforms, the expression of full-length p53 decreased with aging in control rats, but did not in diabetes model rats. We are analyzing the detail more.

Academic Significance and Societal Importance of the Research Achievements

肝癌は本邦で年間3万人以上が死亡しており、肝癌の制御と撲滅は急務であるが癌の分子機構は不明な点が多い。発癌には複数の癌抑制遺伝子が関与するが、その中でもp53は多くの癌種に関与する重要な蛋白質である。近年、蛋白質のアイソフォームの重要性が認識され、その解析に注目が集まっている。我々は発癌に重要なp53蛋白質アイソフォームの肝癌における機能に着目して研究し、その一つである△40p53の肝癌での機能を世界で初めて報告した。p53には10以上のアイソフォームがあり他のp53アイソフォームにも研究を発展させた。p53アイソフォームの機能を解析することは発癌のおける分子機構の解明に貢献すると思われる。

Report

(4 results)
  • 2018 Annual Research Report   Final Research Report ( PDF )
  • 2017 Research-status Report
  • 2016 Research-status Report
  • Research Products

    (6 results)

All 2018 2017 2016

All Journal Article (1 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 1 results,  Open Access: 1 results) Presentation (5 results) (of which Int'l Joint Research: 2 results)

  • [Journal Article] Delta40p53 suppresses tumor cell proliferation and induces cellular senescence in hepatocellular carcinoma cells2017

    • Author(s)
      Ota A, Nakao H, Sawada Y, Karnan S, Wahiduzzaman M, Inoue T, Kobayashi Y, Yamamoto T, Ishii N, Ohashi T, Nakade Y, Sato K, Itoh K, Konishi H, Hosokawa Y, Yoneda M
    • Journal Title

      J Cell Sci

      Volume: 130 Issue: 3 Pages: 614-625

    • DOI

      10.1242/jcs.190736

    • Related Report
      2016 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] 内在性遺伝子改変法を用いた肝癌におけるp53 splicing isoformの機能解析2018

    • Author(s)
      中尾春壽 , 太田明伸 , 北野礼奈 , 坂本和賢 , 大橋知彦 , 中出幸臣 , 角田圭雄 , 伊藤清顕 , 米田政志
    • Organizer
      第54回日本肝臓学会総会
    • Related Report
      2018 Annual Research Report
  • [Presentation] Delta40p53 suppresses tumor cell proliferation and induces cellular senescence in hepatocellular carcinoma cells.2018

    • Author(s)
      Haruhisa Nakao, Akinobu Ota, Yumi Sawada, Sivasundaram Karnan, Md Wahiduzzaman, Tadashi Inoue, Yuji Kobayashi,Norimitsu Ishii, Tomohiko Ohashi, Yukiomi Nakade, Yoshio Sumida, Kiyoaki Itoh, Hiroyuki Konishi, Yoshitaka Hosokawa, Masashi Yoneda
    • Organizer
      the European Association for the Study of Liver: The International Liver Congress 2018 in Paris
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Delta133p53, One of the p53 Isoforms, Suppresses Tumor Cell Proliferation and Induces Cellular Senescence in Hepatocellular Carcinoma Cells2018

    • Author(s)
      Haruhisa Nakao, Akinobu Ota, Mayu Ibusuki, Rena Kitano, Satoshi Kimoto, Tomohiko Ohashi, Yukiomi Nakade, Yoshio Sumida, Kiyoaki Itoh, Hiroyuki Konishi, Yoshitaka Hosokawa, Masashi Yoneda
    • Organizer
      the American Association for the Study of Liver Diseases. : The Liver Meeting® 2018 in San Francisco
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] delta40p53(p53蛋白質splicing isoform)の肝細胞癌における機能解析2017

    • Author(s)
      中尾春壽、太田明伸、坂本和賢、山本高也、大橋知彦、中出幸臣、角田圭雄、伊藤清顕、米田政志
    • Organizer
      第53回日本肝臓学会 総会
    • Related Report
      2017 Research-status Report
  • [Presentation] 遺伝子ターゲティング法を用いたp53蛋白質splicing isoformの肝細胞癌における機能解析2016

    • Author(s)
      中尾春壽、太田明伸、山本高也
    • Organizer
      第52回日本肝臓学会総会
    • Place of Presentation
      千葉
    • Year and Date
      2016-05-19
    • Related Report
      2016 Research-status Report

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Published: 2016-04-21   Modified: 2020-03-30  

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