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2019 Fiscal Year Final Research Report

Regeneration of T cells specific for cancer antigen using iPSC and genome editing technology

Research Project

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Project/Area Number 18K16113
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 54010:Hematology and medical oncology-related
Research InstitutionKyoto University

Principal Investigator

Nagano Seiji (永野誠治)  京都大学, ウイルス・再生医科学研究所, 特定研究員 (90618018)

Project Period (FY) 2018-04-01 – 2020-03-31
Keywords再生T細胞 / がん免疫細胞療法 / CTL / TCR遺伝子 / iPS細胞 / ゲノム編集技術 / 再生医療 / RMCE
Outline of Final Research Achievements

We have developed a novel immuno-cell therapy in which cancer-specific T cells can be mass-generated from iPS cells that we transduce with cencer antigen-specific T cell receptor (TCR) genes using genome editing techonolgy. In paticular, a cassette deck structure was knocked in (cKI-iPSC) at the TCR locus of the iPSC, and then the exogenous TCR genes were replaced on that cKI-iPSC using the Cre system. We succeeded in inducing regenerated CTLs from these TCR-KI-iPSCs, and confirmed that each had antigen-specific killing activity against cancer cells.

Free Research Field

血液学 免疫学

Academic Significance and Societal Importance of the Research Achievements

iPS細胞技術を用いてがん細胞に有効なキラーT細胞を量産できることを示してきました。T細胞を細胞製剤として使うという可能性を大きく広げるものです。しかし、そのことが可能な品質のよいiPS細胞株を作製し同定するには長期間を有することも判明しています。ゲノム編集技術を用いて再生医療用のiPS細胞にがんに特異的な受容体遺伝子を導入することで、上記の問題を解決できないか検証し技術的に可能であることがわかりました。

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Published: 2021-02-19  

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