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Metabolic changes and epigenetic abnormalities caused by tuberous sclerosis compex (TSC) gene mutation

Research Project

Project/Area Number 17K08670
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Pathological medical chemistry
Research InstitutionJuntendo University

Principal Investigator

Kobayashi Toshiyuki  順天堂大学, 医学(系)研究科(研究院), 准教授 (40260070)

Co-Investigator(Kenkyū-buntansha) 高 ひかり  順天堂大学, 医学(系)研究科(研究院), 助教 (60338374)
三浦 芳樹  順天堂大学, 医学(系)研究科(研究院), 講師 (90279240)
Project Period (FY) 2017-04-01 – 2020-03-31
Project Status Completed (Fiscal Year 2019)
Budget Amount *help
¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000)
Fiscal Year 2019: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2018: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2017: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
Keywords結節性硬化症 / 遺伝性難病 / エピゲノム / 代謝 / 分岐鎖アミノ酸 / ES細胞 / 腫瘍細胞 / 動物モデル / 家族性腫瘍 / モデル動物 / アミノ酸代謝 / Tsc1/2 / エピゲノム修飾 / mTORC1 / Bcat1 / Tsc1遺伝子 / Tsc2遺伝子 / Bcat1遺伝子 / 腫瘍 / 遺伝性疾患
Outline of Final Research Achievements

To identify novel therapeutic target pathways for tuberous sclerosis complex (TSC), an inherited and intractable disease, we analyzed metabolic changes and epigenetic abnormalities caused by causative TSC gene (Tsc1 or Tsc2) mutation. In Tsc2 gene-deficient ES cells, certain histone modifications tended to be reduced. The expression of genes encoding enzymes catalyze histone demethylation were also downregulated. In TSC gene-deficient renal tumor cell lines, treatment with an inhibitor of a branched-chain amino acid amino transferase (Bcat1) suppressed cell growth. Although the mechanisms of those phenomena have not been fully elucidated, pathways related to those epigenetic and metabolic enzymes may be novel therapeutic targets for TSC treatment.

Academic Significance and Societal Importance of the Research Achievements

結節性硬化症(TSC)は腫瘍を発生する遺伝性の難病である。これまでの治療法は一定の効果をもたらしているものの、完全な腫瘍の抑制が達成されないことなど、新規の治療法の開発が望まれている。本研究で見出された酵素が関わる経路に介入することにより、新たな治療法の開発が進むことが期待される。本研究においては、これまでに知られていない、新たな反応経路同士の関わり方も明らかになった。これらの新たな知見は、他の様々な生命現象・疾患の理解に役立つことが期待される。

Report

(4 results)
  • 2019 Annual Research Report   Final Research Report ( PDF )
  • 2018 Research-status Report
  • 2017 Research-status Report
  • Research Products

    (9 results)

All 2020 2019 2018 2017

All Journal Article (1 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 1 results,  Open Access: 1 results) Presentation (8 results) (of which Int'l Joint Research: 4 results,  Invited: 1 results)

  • [Journal Article] Interstitial chromosomal deletion of the Tsc2 locus is a signature for radiation-associated renal tumors in Eker rats2020

    • Author(s)
      Tatsuya Inoue, Toshiaki Kokubo, Kazuhiro Daino, Hiromi Yanagihara, Fumiko Watanabe, Chizuru Tsuruoka, Yoshiko Amasaki, Takamitsu Morioka, Shino Homma-Takeda, Toshiyuki Kobayashi, Okio Hino, Yoshiya Shimada, Shizuko Kakinuma
    • Journal Title

      Cancer Science

      Volume: 111 Issue: 3 Pages: 840-848

    • DOI

      10.1111/cas.14307

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] Gene expression profile in the liver of Tsc2 heterozygous mutant (Tsc2+/-) mice: Implications of heterozygosity on lipid metabolism2019

    • Author(s)
      Doan Nguyen Minh Thien, Toshiyuki Kobayashi, Keiko Nishikawa, Yoshinobu Sugitani, Takayuki Kitano, Masashi Mizuguchi, Okio Hino
    • Organizer
      2019 International Tuberous Sclerosis Complex Research Conference
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Bcat1阻害剤はTsc2欠損マウス腫瘍細胞の増殖を効果的に抑える2019

    • Author(s)
      Keiko NISHIKAWA, Tetsuya TAKAGAKI, Moe YASHIMA, Takumi SUZUKI, Toshiyuki KOBAYASHI
    • Organizer
      第42回日本分子生物学会年会
    • Related Report
      2019 Annual Research Report
  • [Presentation] ハマルチンによるアミノ酸アミノ基転移酵素の制御2018

    • Author(s)
      小林敏之、樋野興夫
    • Organizer
      第77回日本癌学会学術総会
    • Related Report
      2018 Research-status Report
  • [Presentation] Exploring downstream pathways of Erc/Msln as therapeutic targets of TSC2018

    • Author(s)
      Kobayashi T
    • Organizer
      International Tuberous Sclerosis Complex Research Conference 2018
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Aberrant histone methylation and altered gene expression in Tsc2-deficient Eker rat ES cells2018

    • Author(s)
      Keiko Nishikawa, Toshiyuki Kobayashi, Yoshinobu Sugitani, Doan Nguyen Minh Thien, Takayuki Kitano, Okio Hino
    • Organizer
      International Tuberous Sclerosis Complex Research Conference 2018
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research
  • [Presentation] Tsc2欠損EkerラットES細胞にみられるヒストンのメチル化異常及び遺伝子発現異常2018

    • Author(s)
      西川桂子、小林敏之、杉谷喜信、Nguyen Minh Thien Doan、北野隆之、樋野興夫
    • Organizer
      第41回日本分子生物学会年会
    • Related Report
      2018 Research-status Report
  • [Presentation] Exploring TSC protein complex/mTORC1-regulated genes in tumor cell lines derived from the Tsc1 knockout mouse2017

    • Author(s)
      Kobayashi T, Hino O
    • Organizer
      2017 International Research Conference on TSC and LAM
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research
  • [Presentation] Hamartinによる代謝関連遺伝子発現制御2017

    • Author(s)
      小林敏之、樋野興夫
    • Organizer
      第76回日本癌学会学術総会
    • Related Report
      2017 Research-status Report

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Published: 2017-04-28   Modified: 2021-02-19  

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