• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to previous page

Regulation of Ph-positive leukemia stem cells by glutamate receptors

Research Project

Project/Area Number 17K07227
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Tumor therapeutics
Research InstitutionTokyo Medical University

Principal Investigator

Okabe Seiichi  東京医科大学, 医学部, 講師 (40366109)

Co-Investigator(Kenkyū-buntansha) 片桐 誠一朗  東京医科大学, 医学部, 助教 (50532298)
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: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2018: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Fiscal Year 2017: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
Keywords分子標的 / 分子標的治療 / 白血病幹細胞 / 癌 / シグナル伝達
Outline of Final Research Achievements

Chronic myeloid leukemia (CML) is a myeloproliferative disorder caused by the breakpoint cluster-Abelson (BCR-ABL) oncogene, and is characterized by the presence of the Philadelphia (Ph) chromosome within hematopoietic stem cells.ABL tyrosine kinase inhibitors (TKIs) have improved the survival of CML patients.ABL TKIs do not eliminate the leukemia stem cells (LSCs), which may represent the most important event in leukemia relapse after TKI discontinuation. Glutamate receptor subunits are expressed in a variety of cancer cell lines. We found expression of glutamate receptor is increased CML ips cells. We established a new ABL TKI-resistant CML-like K562 cell lines and analyzed the drug sensitivity by microarray.

Academic Significance and Societal Importance of the Research Achievements

慢性骨髄性白血病の予後は、ABL阻害薬の登場により劇的に改善した。しかし、分子遺伝学的完全寛解に入った症例でも、薬剤の中止により、再発する症例が多数存在する。この原因として、ABL阻害薬に耐性の白血病幹細胞が骨髄内で残存し、ABL阻害薬治療中止後、白血病細胞を供給することがその原因と考えられている。本研究 では、Ph陽性白血病由来iPS細胞を作成した。このiPS細胞は正常細胞と比較して、グルタミン酸受容体の発現が著明に亢進していることを確認した。またABL阻害薬(イマチニブ、ニロチニブ、ダサチニブ、ポナチニブ)の耐性細胞を樹立しており、個々の耐性細胞に対して、マイクロアレイによる解析を行った。

Report

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

    (2 results)

All 2020

All Journal Article (2 results) (of which Peer Reviewed: 2 results)

  • [Journal Article] Efficacy of dasatinib against ponatinib-resistant chronic myeloid leukemia cells.2020

    • Author(s)
      Okabe S, Tanaka Y, Moriyama M, Gotoh A.
    • Journal Title

      Leuk Lymphoma

      Volume: 61 Issue: 1 Pages: 237-239

    • DOI

      10.1080/10428194.2019.1660971

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Effect of dual inhibition of histone deacetylase and phosphatidylinositol-3 kinase in Philadelphia chromosome-positive leukemia cells.2020

    • Author(s)
      Okabe S, Tanaka Y, Moriyama M, Gotoh A.
    • Journal Title

      Cancer Chemother Pharmacol.

      Volume: 85 Issue: 2 Pages: 401-412

    • DOI

      10.1007/s00280-019-04022-x

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed

URL: 

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

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi