Abstract: The present invention provides a method for producing CAR T-cells enriched with stem cell-like memory T-cells (Tscm), comprised of: (1) providing PBMCs; (2) isolating of T cells from PBMCs using magnetic beads coated with T-cell specific antibodies; (3) positively selecting T cells by culturing them in the form of T cell-magnetic bead complexes; (4) adding CAR-expressing lentivirus to the activated human T cell-magnetic bead complexes, for transduction of human T cells into CAR-T cells on the human T cell-magnetic bead complexes to obtain human CAR-T cell-magnetic bead complexes; (5) obtaining human CAR-T cells by dissociating the human CAR-T cells from the human CAR-T cell-magnetic bead complexes; and (6) further culturing CAR-T cells to obtain CAR-T cells enriched with Tscm. The present invention expands T cells in a short period of time to obtain CAR-T cells enriched with Tscm, which is suitable for CAR-T immunotherapy.

Abstract: A method for in vitro activation and/or expansion of immune cells is provided, including the steps of: a) providing magnetic particles having multi-protrusive surface modified with at least one type of immuno-inducing substance, in which each magnetic particle includes a copolymer core, a polymer layer, a magnetic substance layer, and a silicon-based layer from the inside to the outside; b) providing a cell solution including at least one type of immune cell in the cell solution; and c) bringing the magnetic particles in contact with the cell solution, in which the at least one type of immuno-inducing substance on the surface of the magnetic particle activates and/or expands the at least one type of immune cell in the cell solution.

Abstract: A method for in vitro activation and/or expansion of immune cells is provided, including the steps of: a) providing magnetic particles having multi-protrusive surface modified with at least one type of immuno-inducing substance, in which each magnetic particle includes a copolymer core, a polymer layer, a magnetic substance layer, and a silicon-based layer from the inside to the outside; b) providing a cell solution including at least one type of immune cell in the cell solution; and c) bringing the magnetic particles in contact with the cell solution, in which the at least one type of immuno-inducing substance on the surface of the magnetic particle activates and/or expands the at least one type of immune cell in the cell solution.