Disclosed herein are cells that are immunoinhibitory cell, which cells recombinantly express a dominant negative form of an inhibitor of a cell-mediated immune response of the cell. In certain embodiments, the immunoinhibitory cell is a regulatory T cell. In another aspect, provided herein is a regulatory T cell that recombinantly expresses a dominant negative form of an inhibitor of a regulatory T cell-mediated immune response. The cells can be sensitized to an antigen that is the target of a pathologic immune response associated with an immune-mediated disorder. Additionally provided are methods of using such cells to treat an immune-mediated disorder in a subject in need thereof.

The present disclosure provides soluble mutant PD-L1 peptides, polynucleotides and vectors encoding the peptides, and methods of using the peptides to elicit differentiation of regulatory T cells.

Disclosed are methods of isolating a TCR having antigenic specificity for a mutated amino acid sequence encoded by a cancer-specific mutation, the method comprising: identifying one or more genes in the nucleic acid of a cancer cell of a patient, each gene containing a cancer-specific mutation that encodes a mutated amino acid sequence; inducing autologous APCs of the patient to present the mutated amino acid sequence; co-culturing autologous T cells of the patient with the autologous APCs that present the mutated amino acid sequence; selecting the autologous T cells; and isolating a nucleotide sequence that encodes the TCR from the selected autologous T cells, wherein the TCR has antigenic specificity for the mutated amino acid sequence encoded by the cancer-specific mutation. Also disclosed are related methods of preparing a population of cells, populations of cells, TCRs, pharmaceutical compositions, and methods of treating or preventing cancer.

The present invention provides a cell which co-expresses a first chimeric antigen receptor (CAR) and second CAR at the cell surface, each CAR comprising an antigen-binding domain, wherein the antigen-binding domain of the first CAR binds to CD19 and the antigen-binding domain of the second CAR binds to CD22.

Provided are an artificial multi-antigen fusion protein and a preparation method thereof. The fusion protein can effectively stimulate CD8+T and CD4+ T cell immunities, and can be applied to immunodiagnostics or serve as a prophylactic or therapeutic vaccine.

A method of producing an engineered T cell population includes obtaining a cell population comprising a CD8+ T cell, isolating the CD8+ T cell from the obtained cell population, activating the isolated CD8+ T cell, introducing a nucleic acid encoding a T cell receptor (TCR) binding to an antigen in a complex with an MHC molecule into the activated CD8+ T cell, and expanding the introduced CD8+ T cell to obtain the engineered T cell population.

Provided herein, inter alia, are compositions and methods for treating bladder cancer, including CD4+T cells that can be cultured ex vivo to generate a population of cytotoxic CD4.sup.+T cells capable of killing bladder cancer tumor cells. Pharmaceutical compositions containing such a cytotoxic CD4.sup.+T cell population, as well as methods for treating an individual having or suspected of having bladder cancer are also provided.

The present disclosure provides improved compositions for adoptive T cell therapies for treating, preventing, or ameliorating at least one symptom of a cancer, infectious disease, autoimmune disease, inflammatory disease, and immunodeficiency, or condition associated therewith.

The present invention relates methods and compositions for preventing or treating various immune diseases including graft-versus-host disease (GVHD) using populations or compositions of immunoregulatory T cells specific for an irrelevant antigen; such cells being activated in vivo by a simultaneous, separate or sequential administration of said antigen.

Disclosed are methods of isolating a TCR having antigenic specificity for a mutated amino acid sequence encoded by a cancer-specific mutation, the method comprising: identifying one or more genes in the nucleic acid of a cancer cell of a patient, each gene containing a cancer-specific mutation that encodes a mutated amino acid sequence; inducing autologous APCs of the patient to present the mutated amino acid sequence; co-culturing autologous T cells of the patient with the autologous APCs that present the mutated amino acid sequence; selecting the autologous T cells; and isolating a nucleotide sequence that encodes the TCR from the selected autologous T cells, wherein the TCR has antigenic specificity for the mutated amino acid sequence encoded by the cancer-specific mutation. Also disclosed are related methods of preparing a population of cells, populations of cells, TCRs, pharmaceutical compositions, and methods of treating or preventing cancer.