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Improvement of humanized mice through elucidation of interaction between mouse innate immune system and human cells

Research Project

Project/Area Number 21H02396
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Review Section Basic Section 42040:Laboratory animal science-related
Research InstitutionCentral Institute for Experimental Animals

Principal Investigator

Takahashi Takeshi  公益財団法人実験動物中央研究所, 実験動物基礎研究部, 部長 (80335215)

Co-Investigator(Kenkyū-buntansha) 玉井 恵一  地方独立行政法人宮城県立病院機構宮城県立がんセンター(研究所), がん幹細胞研究部, 部長 (40509262)
Project Period (FY) 2021-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥17,420,000 (Direct Cost: ¥13,400,000、Indirect Cost: ¥4,020,000)
Fiscal Year 2023: ¥5,460,000 (Direct Cost: ¥4,200,000、Indirect Cost: ¥1,260,000)
Fiscal Year 2022: ¥5,460,000 (Direct Cost: ¥4,200,000、Indirect Cost: ¥1,260,000)
Fiscal Year 2021: ¥6,500,000 (Direct Cost: ¥5,000,000、Indirect Cost: ¥1,500,000)
Keywordsヒト化マウス / 免疫不全 / 腫瘍免疫 / PD-1 / 赤血球 / 自然免疫 / 受容体 / Fc受容体 / マクロファージ / 抗体医薬 / マラリア
Outline of Research at the Start

免疫不全マウスにヒト組織を生着させるヒト化マウス技術は様々な研究に用いられている。この技術の核は異種に対する受容性の高い免疫不全動物を開発することにある。申請者らは重度免疫不全NOGマウスを用い、主としてヒト血液細胞の生着、発生分化を試みている。NOGマウスは優れた免疫不全マウスであるが、それでも生着が困難な細胞種が存在している。ヒト組織の一部はその糖鎖を通してマウス免疫系に認識され、発生分化が抑制される、もしくは拒絶されることを見出している。本研究ではマウス糖鎖認識受容体とヒト組織の相互作用を明らかにすることにより、ヒト組織の生着性を向上させられる新しい免疫不全マウスを開発する。

Outline of Final Research Achievements

We succeeded establishing a novel immune deficient NOG mice, in which human RBC can be sustained for long term. In this mouse, human RBC can be detected up to 14 days after transfusion, comparing to 3-4 days in normal NOG mice. In addition, once raising the level of human RBC frequency to 80%, the level higher than 70% was maintained for 3 weeks without any additional treatment.
We have characterized the immunological feature of NOG-FcRKO mice by single cell RNA sequence, and found that there are significant differences between NGO-FcRKO and NOG mice. We are studying whether these differences accounts for the the susceptibility to anti-PD-1 antibody therapy in tumor bearing humanized NOG-FcRKO.

Academic Significance and Societal Importance of the Research Achievements

ヒト赤血球がマウスの自然免疫系によって認識される分子メカニズムを解明した。その成果を活かして開発した新しい免疫不全マウスではヒト赤血球のマウス体内での維持期間がNOGマウスと比較して大幅に延長し、マラリア研究などへの活用が期待できる結果となった。
NOG-FcR KOマウスの免疫学的特徴が明らかにした。この特徴がヒト腫瘍免疫、特に抗PD-1抗体の奏功性の理解につながるのかをさらに検討している。これらの研究により新たな治療戦略の開発につながる。

Report

(2 results)
  • 2023 Final Research Report ( PDF )
  • 2022 Annual Research Report
  • Research Products

    (8 results)

All 2023 2022 Other

All Int'l Joint Research (1 results) Journal Article (2 results) (of which Int'l Joint Research: 2 results,  Peer Reviewed: 2 results,  Open Access: 2 results) Presentation (5 results) (of which Int'l Joint Research: 4 results,  Invited: 1 results)

  • [Int'l Joint Research] Singapore Immunology Network/A-STAR ID_Laboratory(シンガポール)

    • Related Report
      2022 Annual Research Report
  • [Journal Article] Single cell analysis in head and neck cancer reveals potential immune evasion mechanisms during early metastasis2023

    • Author(s)
      Quah Hong Sheng、Cao Elaine Yiqun、Suteja Lisda、Li Constance H.、Leong Hui Sun、Chong Fui Teen、Gupta Shilpi、Arcinas Camille、Ouyang John F.、Ang Vivian、Celhar Teja、Zhao Yunqian、Tay Hui Chen、Chan Jerry、Takahashi Takeshi、Tan Daniel S. W.、Biswas Subhra K.、Rackham Owen J. L.、Iyer N. Gopalakrishna
    • Journal Title

      Nature Communications

      Volume: 14 Issue: 1 Pages: 1680-1680

    • DOI

      10.1038/s41467-023-37379-y

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Efficient differentiation of human neutrophils with recapitulation of emergency granulopoiesis in human G-CSF knockin humanized mice2022

    • Author(s)
      Ito Ryoji、Katano Ikumi、Kwok Immanuel W.H.、Ng Lai Guan、Ida-Tanaka Miyuki、Ohno Yusuke、Mu Yunmei、Celhar Teja、Yen Chan Jerry Kok、Takahashi Takeshi、Goto Motohito、Ogura Tomoyuki、Takahashi Riichi、Ito Mamoru
    • Journal Title

      Cell Reports

      Volume: 41 Issue: 12 Pages: 111841-111841

    • DOI

      10.1016/j.celrep.2022.111841

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] A novel humanized mouse model based on NOG-FcγR-/- mice recapitulates anti-tumor immune reactions by human immune systems in response to anti-PD-1 antibody (Nivolumab).2022

    • Author(s)
      Ikumi Katano, Asami Hanazawa, Iyo Otsuka, Takuya Yamaguchi, Misa Mochizuki, Kenji Kawai, Ryoji Ito, Motohito Goto, Takahiro Kagawa & Takeshi Takahashi
    • Organizer
      AACR
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Development of NOG mice with modifications of innate receptors2022

    • Author(s)
      Takeshi Takahashi
    • Organizer
      International workshop on humanized mice 6 (IWHM6)
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Prolonged survival of hRBC in NOG-C3-Clec4f double deficient mice2022

    • Author(s)
      Takuya Yamaguchi, Iyo Otsuka, Takeshi Takahashi
    • Organizer
      International workshop on humanized mice 6 (IWHM6)
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Functional evaluation model for anti human PD 1 antibody using humanized NOG-FcgR KO mouse2022

    • Author(s)
      Ikumi Katano, Asami Hanazawa, Iyo Ootsuka, Misa Mochizuki, Kenji Kawai, Takeshi Takahashi
    • Organizer
      International workshop on humanized mice 6 (IWHM6)
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] A novel ischemic infarction model using humanized NOG-IL-34 Tg mouse2022

    • Author(s)
      Ikumi Katano, Takeshi Takahashi, Mamoru Ito
    • Organizer
      第51回日本免疫学会学術集会
    • Related Report
      2022 Annual Research Report

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Published: 2021-04-28   Modified: 2025-01-30  

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