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Regulatory mechanisms involved in SRF-MKL1/2 complex in epithelial tumors

Research Project

Project/Area Number 17K07154
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Tumor biology
Research InstitutionChiba University

Principal Investigator

Iba Hideo  千葉大学, 真菌医学研究センター, 特任教授 (60111449)

Co-Investigator(Kenkyū-buntansha) 原口 健  千葉大学, 真菌医学研究センター, 特任准教授 (10549455)
Project Period (FY) 2017-04-01 – 2020-03-31
Project Status Completed (Fiscal Year 2019)
Budget Amount *help
¥4,940,000 (Direct Cost: ¥3,800,000、Indirect Cost: ¥1,140,000)
Fiscal Year 2019: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2018: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Fiscal Year 2017: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
KeywordsSWI/SNF複合体 / Brm / MKL1/2 / SRF / SWI/SNFクロマチン構造因子 / 核内アクチン / 上皮細胞 / アクチン / SWI/SNF 複合体 / 上皮がん細胞
Outline of Final Research Achievements

We showed that in human epithelial tumors, expression the catalytic subunit of SWI/SNF complex, Brm is negatively corelated with the expression of target genes of transcription factor, SRF and that Brm expression negatively regulates SRF function. By examining this molecular mechanism, we have found that 1) MKL1/2, important cofactors of SRF, were regulated by its subcellular localization; in Brm competent cells, MKL1/2 is retained in cellular cytoplasm. 2) Expression of one member of importin family genes was shown to be Brm-dependent, but this importin protein has no effects on the subcellular localization of MKL1/2.

Academic Significance and Societal Importance of the Research Achievements

ヒトの上皮がん細胞では、SWI/SNF複合体の触媒サブユニット Brmの発現の有無によって細胞内の多くの遺伝子群の制御ネットワークが決定的に違う2群に分けられることを見出してきた。その分子機構を理解することは、両群ごとに適切な治療法を開発する上で重要であると考えられることから、本研究では、MKL1/2の機能がBrmにより負に制御することに注目した。その結果MKL1/2の細胞内局在がBrmの発現により大きく影響を受けていることが判明した。現在その機構は解明には至っていない。

Report

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

    (9 results)

All 2019 2017 Other

All Journal Article (4 results) (of which Peer Reviewed: 3 results,  Open Access: 3 results) Presentation (3 results) Book (1 results) Remarks (1 results)

  • [Journal Article] miRNAが形成する制御ネットワークと疾患2019

    • Author(s)
      伊庭 英夫
    • Journal Title

      医学のあゆみ

      Volume: ―

    • Related Report
      2018 Research-status Report
  • [Journal Article] Tumor suppression via inhibition of SWI/SNF complex-dependent NF-κB activation.2017

    • Author(s)
      1.Kobayashi, K*., Hiramatsu, H*., Nakamura, S., Kobayashi, K., Haraguchi, T. and Iba, H. (* equally contributed)
    • Journal Title

      Scientific Reports,

      Volume: 7 Issue: 1 Pages: 11772-11772

    • DOI

      10.1038/s41598-017-11806-9

    • Related Report
      2017 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] MiR-199a Inhibits Secondary Envelopment of Herpes Simplex Virus-1 Through the Downregulation of Cdc42-specific GTPase Activating Protein Localized in Golgi Apparatus2017

    • Author(s)
      2.Kobayashi, K., Suemasa, F., Sagara, H., Nakamura, S., Ino, Y., Kobayashi, K., Hiramatsu, H., Haraguchi, T., Kurokawa, K., Todo, T., Nakano, A., and Iba, H.
    • Journal Title

      Scientific Reports,

      Volume: 7 Issue: 1 Pages: 6650-6650

    • DOI

      10.1038/s41598-017-06754-3

    • Related Report
      2017 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] The role of the SWI/SNF chromatin remodeling complex in maintaining the stemness of glioma initiating cells2017

    • Author(s)
      Hiroaki Hiramatsu, Kazuyuki Kobayashi, Kyousuke Kobayashi, Takeshi Hraguchi, Yasushi Ino, Tomoki Toda & Hideo Iba
    • Journal Title

      Sienctific Reports

      Volume: 7 Issue: 1 Pages: 889-889

    • DOI

      10.1038/s41598-017-00982-3

    • Related Report
      2017 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] テトラサイクリン誘導型miRNA阻害ベクターを用いた、miR-200 ファミリー阻害により誘導されるEMTの動的解析2017

    • Author(s)
      .原口 健
    • Organizer
      日本核酸医薬学会第2回年会 札幌
    • Related Report
      2017 Research-status Report
  • [Presentation] Inhibition of SWI/SNF complex-dependent NF-κB activation suppresses tumor formation (SWI/SNF 複合体依存性のNF-κB 標的遺伝子の阻害による腫瘍抑制)2017

    • Author(s)
      小林 和善
    • Organizer
      第76回日本癌学会学術総会 横浜
    • Related Report
      2017 Research-status Report
  • [Presentation] The role of the SWI/SNF chromatin remodeling complex in maintaining the stemness of glioma initiating cells (グリオーマ幹細胞の幹細胞性維持に働くクロマチン構造変換因子SWI/SNF 複合体の解析)2017

    • Author(s)
      平松 寛明
    • Organizer
      第76回日本癌学会学術総会 横浜
    • Related Report
      2017 Research-status Report
  • [Book] miRNAの最新知識~基礎領域から診断・治療応用まで2017

    • Author(s)
      小林和善、伊庭英夫
    • Total Pages
      195
    • Publisher
      医薬ジャーナル社
    • Related Report
      2017 Research-status Report
  • [Remarks] 千葉大学 真菌医学研究センター RNA感染治療学分野

    • URL

      http://www.pf.chiba-u.ac.jp/research/project/iba.html

    • Related Report
      2017 Research-status Report

URL: 

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

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