ANTI-GPC3 SINGLE-CHAIN ANTIBODY-CONTAINING CAR

    公开(公告)号:US20230071098A1

    公开(公告)日:2023-03-09

    申请号:US17259816

    申请日:2019-07-16

    Abstract: The present invention aims to provide a CAR that contains a single-chain antibody capable of specifically binding to GPC3 localized in the cell membrane and is useful for cancer immunotherapy using a CAR-T cell; and an immunocompetent cell expressing such a CAR. A gene encoding a CAR containing: a single-chain antibody that contains specific heavy-chain CDR1 to CDR3 and specific light-chain CDR1 to CDR3, as defined in claim 1, and specifically binds to a human-derived GPC3 polypeptide; a transmembrane region fused to a carboxyl terminus of the single-chain antibody; and an immunocompetent cell activation signaling transduction region fused to a carboxyl terminus of the transmembrane region is produced, and the gene is introduced into an immunocompetent cell. Thereby, a CAR-expressing immunocompetent cell having excellent cytotoxic activity on cancer cells and interferon gamma (IFN-γ) producibility can be produced.

    METHOD FOR ACTIVATING T-CELLS
    2.
    发明公开

    公开(公告)号:US20240191192A1

    公开(公告)日:2024-06-13

    申请号:US18554372

    申请日:2022-04-07

    CPC classification number: C12N5/0636 C07K16/2809 C07K16/2818 C12N2510/00

    Abstract: Provided is a method for activating T cells comprising the step of activating T cells in a medium containing a CD3 agonist and/or a CD28 agonist for more than 36 hours and less than 48 hours; a method for producing genetically modified T cells, comprising the steps of activating T cells according to the activation method, introducing an exogenous gene into the activated T cells, and culturing the T cells into which the exogenous gene has been introduced; a cell population comprising genetically modified T cells obtained by the production method; and a matrix of mobile polymer chains or a bead supporting a CD3 agonist and/or a CD28 agonist, wherein the matrix or bead is used for being added to a medium and subjecting T cells to an activation step for more than 36 hours and less than 48 hours.

    ANTI-GPC3 ANTIBODY
    3.
    发明申请
    ANTI-GPC3 ANTIBODY 审中-公开

    公开(公告)号:US20190367634A1

    公开(公告)日:2019-12-05

    申请号:US16546787

    申请日:2019-08-21

    Abstract: An object of the present invention is to provide: an anti-GPC3 antibody that recognizes an epitope different from that for existing antibodies (e.g., GC33 and GC199) and can specifically bind, even in the form of single chain antibody, to GPC3 localized on a cell membrane; CAR comprising the anti-GPC3 single chain antibody; an immunocompetent cell expressing the CAR; a gene of the anti-GPC3 antibody or a gene of the CAR; a vector comprising the anti-GPC3 antibody gene or the CAR gene; a host cell in which the vector has been introduced; a method for specifically detecting GPC3; and a kit for specifically detecting GPC3. An antibody comprising particular heavy chain CDR1 to CDR3 and particular light chain CDR1 to CDR3 defined in claim 1, and specifically binding to a human-derived GPC3 polypeptide specifically binds to GPC3 localized on a cell membrane. CAR-immunocompetent cells prepared on the basis of CAR comprising such single chain antibody are useful for cancer immunotherapy.

    GENETICALLY MODIFIED CELL PRODUCTION SYSTEM

    公开(公告)号:US20220411739A1

    公开(公告)日:2022-12-29

    申请号:US17771255

    申请日:2020-09-30

    Abstract: A genetically modified cell that can be mass-produced efficiently. The genetically modified cell production system includes a cell-processing isolator for seeding a T cell in a well plate (culture vessel) a cell culture incubator (cell storage) for holding the culture vessel in which the T cell has been seeded and culturing the T cell a virus-processing isolator (nucleic acid preparation isolator) for providing, to the well plate, a virus having a nucleic acid containing a gene to be introduced into a cell a virus storage (nucleic acid storage) for holding the well plate from the virus-processing isolator and a virus infection isolator (nucleic acid introduction isolator) for introducing the nucleic acid into the T cell by infecting the T cell with the virus.

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