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Development of a new CAR-NK cell therapy using activated NK cells

Research Project

Project/Area Number 20K16437
Research Category

Grant-in-Aid for Early-Career Scientists

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

Principal Investigator

KAMIYA TAKAHIRO  東京医科歯科大学, 東京医科歯科大学病院, 特任助教 (20574693)

Project Period (FY) 2020-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2022: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2021: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2020: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
KeywordsCAR / NK細胞 / 免疫細胞療法 / NK細胞療法 / 固形腫瘍 / 細胞増幅法
Outline of Research at the Start

画期的な新規白血病・リンパ腫治療法である抗CD19CAR-T細胞は、しかしCD19陰性腫瘍の再発や、他のがん種への応用など開発の余地が大きく残されている。NK細胞は自然免疫細胞として、がん細胞や感染細胞などを排除する機能を有しており、その抗腫瘍効果は多くの基礎・臨床研究で示されている。しかし細胞増殖が困難であることなどから、がんに対するNK細胞療法は未だ確立されていない。本研究では新たなCAR-NK細胞療法を確立し、現在のCAR-T療法およびNK細胞療法双方の限界を克服した新たながん免疫細胞療法を確立することを目的とする。

Outline of Final Research Achievements

In this study, we aimed to overcome the limitations of the current CAR-T cell therapy such as the one for solid tumors, by developing and improving a new CAR therapy with NK cells. First, as a system to obtain stable NK cell proliferation, we succeeded in creating a K562 cell line with forced expression of NK stimulating factors IL-15 and 41BBL on the cell surface. The cell line was purified with strong expression after single cell culture. Next, a new CAR construct for NK cells was designed and cloned. We also established cytotoxic activity assays using flow cytometry, and degranulation and intracellular cytokine assays as evaluation systems. On the other hand, stable activated NK cell culture and CAR expression could not be achieved.

Academic Significance and Societal Importance of the Research Achievements

今回得られたNK細胞活性化細胞株や、免疫細胞の活性化を評価する指標としての細胞障害活性、サイトカイン産生能、脱顆粒能の測定系の確率は、CAR細胞療法に限らず様々な免疫細胞療法の研究に応用できる重要な成果であると考えられる。
また、安定した発現を得るに至らなかったものの、新たなCARコンストラクトの最適化により今後NK細胞を用いたCAR研究が広がるものと期待される。

Report

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

    (6 results)

All 2021 2020

All Journal Article (4 results) (of which Peer Reviewed: 2 results,  Open Access: 1 results) Presentation (2 results) (of which Int'l Joint Research: 1 results,  Invited: 2 results)

  • [Journal Article] Viral infections after hematopoietic cell transplantation and treatment with virus-specific T-cell therapies2021

    • Author(s)
      神谷 尚宏、森尾 友宏
    • Journal Title

      Rinsho Ketsueki

      Volume: 62 Issue: 8 Pages: 1334-1342

    • DOI

      10.11406/rinketsu.62.1334

    • NAID

      130008085997

    • ISSN
      0485-1439, 1882-0824
    • Related Report
      2021 Research-status Report
  • [Journal Article] Successful ruxolitinib administration for a patient with steroid‐refractory idiopathic pneumonia syndrome following hematopoietic stem cell transplantation: A case report and literature review2021

    • Author(s)
      Tomomasa Dan、Isoda Takeshi、Mitsuiki Noriko、Yamashita Motoi、Morishita Aoi、Tomoda Takahiro、Okano Tsubasa、Endo Akifumi、Kamiya Takahiro、Yanagimachi Masakatsu、Imai Kohsuke、Kanegane Hirokazu、Takagi Masatoshi、Morio Tomohiro
    • Journal Title

      Clinical Case Reports

      Volume: 9 Issue: 12 Pages: 1-9

    • DOI

      10.1002/ccr3.5242

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Somatic mutation in <i>RUNX1</i> underlies mucocutaneus inflammatory manifestations2021

    • Author(s)
      Okano Tsubasa、Nishimura Akira、Inoue Kento、Naruto Takuya、Tokoro Shown、Tomoda Takahiro、Kamiya Takahiro、Simbo Asami、Akutsu Yuko、Okamoto Keisuke、Yeh Tzuwen、Isoda Takeshi、Yanagimachi Masakatsu、Kajiwara Michiko、Imai Kohsuke、Kanegane Hirokazu、Mori Masaaki、Morio Tomohiro、Takagi Masatoshi
    • Journal Title

      Rheumatology

      Volume: 60 Issue: 12 Pages: e429-e431

    • DOI

      10.1093/rheumatology/keab513

    • Related Report
      2021 Research-status Report
    • Peer Reviewed
  • [Journal Article] 【ウイルス感染と血液疾患】造血細胞移植後のウイルス感染に対するウイルス特異的T細胞療法2020

    • Author(s)
      友田昴宏、神谷尚宏、森尾友宏
    • Journal Title

      血液内科

      Volume: 81 Pages: 688-694

    • Related Report
      2020 Research-status Report
  • [Presentation] 教育講演、 造血細胞移植後ウイルス感染症とウイルス特異的 T 細胞療法2021

    • Author(s)
      神谷 尚宏
    • Organizer
      第83回日本血液学会学術集会
    • Related Report
      2021 Research-status Report
    • Invited
  • [Presentation] NK cell immunotherapy for childhood cancer: its’ potential advantages and barriers to overcome2021

    • Author(s)
      Takahiro Kamiya
    • Organizer
      The 12th JSH International Symposium
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research / Invited

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Published: 2020-04-28   Modified: 2024-01-30  

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