Shinshu University

Kabushiki Kaisha Toshiba

Kissei Pharmaceutical Co., Ltd.

Tokai National Higher Education and Research System

Yozo Nakazawa

Eiichi Akahoshi

Mitsuko Ishihara

Yoshiyuki Takahashi

Shoji Saito

Daisuke Morita

Shigeru Nakano

Nobuhiro Nishio

Kazuyuki Matsuda

Miyuki Tanaka

Hirokazu Morokawa

Shogo Narimatsu

According to one embodiment, there is provided a method of producing a gene modification T cell (CAR-T cells) which expresses a chimeric antigen receptor (CAR). This method includes stimulating a cell population containing a T cell with an antibody which activates the T cell, bringing the cell population into contact with a nucleic acid-introducing carrier, wherein the nucleic acid-introducing carrier containing a lipid particle, a first nucleic acid and containing a CAR gene, and a second nucleic acid containing a transposase gene encapsulated in the lipid particle, and culturing the cell population after the contacting.

Method of producing CAR-T cells, nucleic acid-introducing carrier and kit

In order to improve the efficiency of gene introduction in CAR therapy employing a transposon method, provided is a method for preparing genetically-modified T cells expressing chimeric antigen receptor, comprising: (1) a step of preparing non-proliferative cells which are obtained by stimulating a group of cells comprising T cells using an anti-CD3 antibody and an anti-CD28 antibody followed by a treatment for causing the cells to lose their proliferation capability; (2) a step of obtaining genetically-modified T cells into which a target antigen-specific chimeric antigen receptor gene has been introduced using a transposon method; (3) a step of mixing the non-proliferative cells prepared by step (1) with the genetically-modified T cells obtained by step (2), and co-culturing the mixed cells while stimulating the mixed cells using an anti-CD3 antibody and anti-CD28 antibody; and (4) a step of collecting the cells after culture.

Method for preparing genetically-modified T cells which express chimeric antigen receptor

Production of a chimeric antigen receptor (CAR) expressing cell having excellent target cytotoxicity. Provided is a genetically modified cell comprising, introduced thereinto, a polynucleotide encoding a chimeric antigen receptor (CAR) protein having a target binding domain that specifically binds to a human granulocyte-macrophage colony stimulating factor (GM-CSF) receptor, a transmembrane domain and an intracellular signaling domain.

Genetically-modified cells and method for producing same

Growing community of inventors

Matsumoto, Japan

Yozo Nakazawa