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薬剤耐性癌細胞の多様性に対応する至適分子標的薬選定プロセスの体系化

Publicly Offered Research

Project AreaConquering cancer through neo-dimensional systems understanding
Project/Area Number 16H01578
Research Category

Grant-in-Aid for Scientific Research on Innovative Areas (Research in a proposed research area)

Allocation TypeSingle-year Grants
Review Section Complex systems
Research InstitutionIwate Medical University

Principal Investigator

西塚 哲  岩手医科大学, 医学部, 教授 (50453311)

Project Period (FY) 2016-04-01 – 2018-03-31
Project Status Completed (Fiscal Year 2017)
Budget Amount *help
¥8,450,000 (Direct Cost: ¥6,500,000、Indirect Cost: ¥1,950,000)
Fiscal Year 2017: ¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2016: ¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Keywords再発癌 / 抗癌剤耐性 / 分子標的 / 薬剤耐性
Outline of Annual Research Achievements

薬剤反応における分子レベルでの多様性は抗癌剤治療後再発の主たる原因と考えられる。本公募研究は、その多様性に寄与する因子を多角的に検証し、最終的に初期薬剤治療後の分子標的薬選定プロセスを体系化しようという試みである。初年度の進捗からより包括的な抗癌剤治療後の再発メカニズムを探り分子標的薬の選定根拠を確立するため、昨年度は下記の立案・解析を行った。
(1)抗癌剤誘導性シグナル伝達:当初予定していたタンパク解析に加え、ゲノム解析、トランスクリプトーム解析を加えた。統合的オミクス解析を継続中であるが、遺伝子変異に依存する特異的薬剤反応よりも転写レベル、タンパクレベルでの薬剤反応が再発と関連することが示唆された。特に前年度までの成果で示唆した5-FUへの反応性で重要なPI3Kパスウェイに再度注目し、現在検証を進めている。
(2)抗癌剤耐性細胞集団の多様性:薬剤存在下で増殖する細胞集団についてColony Lysate Array(CoLA)法を確立した。
(3)異種同種移植時におけるPTEN depletionの意義:CoLA法による薬剤耐性細胞集団のプロファイルをもとにヒト胃癌細胞をマウス胃粘膜下層に移植した。腫瘍形成から転移巣にかけて、PI3Kパスウェイ活性化とともにPTENの発現がほぼ消失していた。PTENレベルの消失が胃癌悪性度の指標となるか検証中である。
(4)癌治療後患者の免疫能:Helicobacter pylori(HP)の感染者では代謝拮抗剤S-1を用いた術後化学療法後の生存率が有意に上昇していた。これはHP感染で化学療法に有利な免疫状態が誘導されたことが想定される。HPのヒト健康に及ぼす影響を検証するため健常人コホートを用いた研究計画を立案した。

Research Progress Status

29年度が最終年度であるため、記入しない。

Strategy for Future Research Activity

29年度が最終年度であるため、記入しない。

Report

(2 results)
  • 2017 Annual Research Report
  • 2016 Annual Research Report
  • Research Products

    (14 results)

All 2018 2017 2016 Other

All Int'l Joint Research (2 results) Journal Article (5 results) (of which Peer Reviewed: 5 results,  Open Access: 3 results,  Acknowledgement Compliant: 3 results) Presentation (6 results) (of which Int'l Joint Research: 5 results,  Invited: 3 results) Patent(Industrial Property Rights) (1 results)

  • [Int'l Joint Research] George Mason University/テキサス大学MDアンダーソン癌センター(米国)

    • Related Report
      2017 Annual Research Report
  • [Int'l Joint Research] MD Anderson Cancer Center/George Mason University(米国)

    • Related Report
      2016 Annual Research Report
  • [Journal Article] Helicobacter pylori infection is associated with favorable outcome in advanced gastric cancer patients treated with S-1 adjuvant chemotherapy.2018

    • Author(s)
      Nishizuka SS, Tamura G, Nakatochi M, Fukushima N, Ohmori Y, Sumida C, Iwaya T, Takahashi T, Koeda K; Northern Japan Gastric Cancer Study Consortium.
    • Journal Title

      J Surg Oncol

      Volume: - Issue: 5 Pages: 947-956

    • DOI

      10.1002/jso.24977

    • Related Report
      2017 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Colony Lysate Arrays for Proteomic Profiling of Drug-Tolerant Persisters of Cancer Cell.2017

    • Author(s)
      Kume K, Nishizuka SS.
    • Journal Title

      Anal Chem

      Volume: 89 Issue: 17 Pages: 8626-8631

    • DOI

      10.1021/acs.analchem.7b01215

    • Related Report
      2017 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Inhibition of PI3K suppresses propagation of drug-tolerant cancer cell subpopulations enriched by 5-fluorouracil2017

    • Author(s)
      Ishida K, Ito C, Ohmori Y, Kume K, Sato KA, Koizumi Y, Konta A, Iwaya T, Nukatsuka M, Kobunai T, Takechi T, Nishizuka SS
    • Journal Title

      Sci Rep

      Volume: -

    • Related Report
      2016 Annual Research Report
    • Peer Reviewed / Open Access / Acknowledgement Compliant
  • [Journal Article] Analysis of PI3K mutations and PI3K pathway proteins in advanced gastric cancer2017

    • Author(s)
      Ito C, Nishizuka SS, Ishida K, Uesugi N, Sugai T, Tamura G, Koeda K, Sasaki A
    • Journal Title

      Journal of Surgical Research

      Volume: 212 Pages: 195-204

    • DOI

      10.1016/j.jss.2017.01.018

    • Related Report
      2016 Annual Research Report
    • Peer Reviewed / Acknowledgement Compliant
  • [Journal Article] α-Amanitin Restrains Cancer Relapse from Drug-Tolerant Cell Subpopulations via TAF152016

    • Author(s)
      Kume K, Ikeda M, Miura S, Ito K, Sato KA, Ohmori Y, Endo F, Katagiri H, Ishida K, Ito C, Iwaya T, Nishizuka SS
    • Journal Title

      Sci Rep

      Volume: - Issue: 1 Pages: 25895-25895

    • DOI

      10.1038/srep25895

    • Related Report
      2016 Annual Research Report
    • Peer Reviewed / Open Access / Acknowledgement Compliant
  • [Presentation] Microbiota and Chemotherapy: A Downstream Finding of RPPA Biomarker Screening.2017

    • Author(s)
      Nishizuka S
    • Organizer
      7th Reverse-Phase Protein Array Global Workshop
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Profiling Drug-Tolerant Cancer Cell Subpopulations using RPPA2016

    • Author(s)
      Nishizuka SS
    • Organizer
      6th RPPA Global Workshop
    • Place of Presentation
      Tubingen, Germany
    • Year and Date
      2016-09-25
    • Related Report
      2016 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Inhibition of PI3K suppresses propagation of drug-tolerant gastric cancer cell subpopulations enriched by 5-FU2016

    • Author(s)
      Nishizuka SS, Ishida K, Ito C, Ohmori Y, Kume K, Sato KA, Koizumi Y, Konta A, Nukatsuka M, Kobunai T, Iwaya T, Takechi T
    • Organizer
      68th Naito Conference
    • Place of Presentation
      札幌
    • Year and Date
      2016-07-05
    • Related Report
      2016 Annual Research Report
    • Int'l Joint Research
  • [Presentation] がん研究における定量生物学2016

    • Author(s)
      西塚 哲
    • Organizer
      第68回日本細胞生物学会・第11回日本ケミカルバイオロジー学会 合同大会
    • Place of Presentation
      京都
    • Year and Date
      2016-06-15
    • Related Report
      2016 Annual Research Report
    • Invited
  • [Presentation] Inhibition of phosphatidylinositol 3-kinase suppresses propagation of drug-tolerant cancer cell subpopulations enriched by 5-fluorouracil2016

    • Author(s)
      Nishizuka SS, Ishida K, Ito C, Ohmori Y, Kume K, Sato KA, Koizumi Y, Konta A, Nukatsuka M, Kobunai T, Iwaya T, Takechi T
    • Organizer
      American Association for Cancer Research
    • Place of Presentation
      New Orleans, USA
    • Year and Date
      2016-04-16
    • Related Report
      2016 Annual Research Report
    • Int'l Joint Research
  • [Presentation] TAF15 as an important mediator of RNA polymerase II-dependent drug tolerance2016

    • Author(s)
      Kume K, Iwaya T, Nishizuka SS
    • Organizer
      American Association for Cancer Research
    • Place of Presentation
      New Orleans, USA
    • Year and Date
      2016-04-16
    • Related Report
      2016 Annual Research Report
    • Int'l Joint Research
  • [Patent(Industrial Property Rights)] 胃癌モデル動物の作製方法2017

    • Inventor(s)
      西塚 哲、石田 馨
    • Industrial Property Rights Holder
      西塚 哲、石田 馨
    • Industrial Property Rights Type
      特許
    • Industrial Property Number
      2017-080566
    • Filing Date
      2017
    • Related Report
      2017 Annual Research Report

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Published: 2016-04-26   Modified: 2018-12-17  

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