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

Improvement of CLL-1 CAR-T cells for AML

Research Project

Project/Area Number 20K16395
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 50020:Tumor diagnostics and therapeutics-related
Research InstitutionTeikyo University

Principal Investigator

Tashiro Haruko  帝京大学, 医学部, 教授 (50433884)

Project Period (FY) 2020-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000)
Fiscal Year 2022: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2021: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2020: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
KeywordsCAR-T / AML / CLL-1 / 急性骨髄性白血病
Outline of Research at the Start

抗癌剤治療不応、あるいは移植後の再発などの難治性急性骨髄性白血病(AML)の予後は不良である。遺伝子改変キメラ抗原受容体 T 細胞 (chimeric antigen receptor T-cell; CAR-T)療法はCD19陽性B細胞性腫瘍に対し目覚ましい効果を示しているが、AMLに対してのCAR-T開発は遅れている。先行研究にて報告した、80-90% のAMLに発現するC-type lectin like molecule 1(CLL-1)を標的とした、CLL-1.CAR-T細胞の抗腫瘍効果を高めることが本研究の目的である。

Outline of Final Research Achievements

CLL-1.CAR/C7R-T cell showed phosphorylation of STAT5 in the absence of any cytokines. Although CLL-1.CAR-T did not survive more than 30 days without cytokines or antigen stimulation, CLL-1.CAR/C7R persisted until day 100. In a serial co-culture assay, CLL-1.CAR/C7R-T cells showed longer anti-tumor activity than CLL-1.CAR-T cells. In in vivo assay, NSG mice were received CLL-1+ AML cell line, HL60 and then received CLL-1.CAR/C7R-T cells or CLL-1.CAR-T cells. The CLL-1.CAR/C7R-T cells group showed better tumor control.

Academic Significance and Societal Importance of the Research Achievements

CAR-T細胞療法は、今後血液がんのみならず固形がんにも応用されていくことが予想される。より効果的なCAR-Tであるためには、persistencyが重要であり、C7Rを導入することにより、Persistencyが向上することは示せた。

Report

(5 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Research-status Report
  • 2021 Research-status Report
  • 2020 Research-status Report
  • Research Products

    (2 results)

All 2023 2022

All Presentation (2 results) (of which Invited: 1 results)

  • [Presentation] A constitutively active IL-7 receptor augments the activity of CLL-1 CAR T-cells against AML2023

    • Author(s)
      Haruko Tashiro
    • Organizer
      Thailand Hub of Talents in Cancer Immunotherapy International Conference
    • Related Report
      2023 Annual Research Report
    • Invited
  • [Presentation] Combining a constitutively active IL-7 receptor with CLL-1 CAR T-cells for treatment of acute myeloid leukemia2022

    • Author(s)
      Haruko Tashiro, Thomas Shum, Ryosuke Shirasaki, Bilal Omer, Cliona M. Rooney, Stephen Gottschalk, Malcolm K. Brenner.
    • Organizer
      第44回日本造血・免疫細胞療法学会総会
    • Related Report
      2022 Research-status Report

URL: 

Published: 2020-04-28   Modified: 2025-01-30  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi