Described herein is a reliable method for preparing a potent vaccine useful for immunotherapy comprising the step of cryopreserving a population of cells undergoing immunogenic cell death, and using such cells to activate dendritic cells for use in immunotherapy. In a specific embodiment, the method comprises cryopreserving cancer cells undergoing cell death, which can be used to prepare a pharmaceutical composition for immunotherapy against cancer.

Disclosed herein are cells that are immune cells or precursor cells thereof, which cells recombinantly express a chimeric antigen receptor (CAR), and a dominant negative form of an inhibitor of a cell-mediated immune response of the immune cell, wherein the CAR binds to a cancer antigen. Also disclosed herein are T cells that recognize and are sensitized to a cancer antigen, which T cells recombinantly express a dominant negative form of an inhibitor of a T cell-mediated immune response. Additionally provided are methods of using such cells to treat cancer in a subject in need thereof.

The present disclosure provides modified immune cells or precursors thereof (e.g. modified T cells) comprising a chimeric cell surface sialidase or a variant sialidase precursor protein. Compositions and methods of treatment are also provided.

Disclosed herein are clones of murine F77 monoclonal antibodies, humanized F77 antibodies, single chain variable fragments (scFvs) and single chain antigen binding fragments (scFabs) of the antibodies, and chimeric antigen receptors. The humanized F77 antibodies and their fragments retain the binding specificity of the murine F77 monoclonal antibody to PC-3 cells. The humanized F77 antibodies and their fragments can be used for diagnostic and/or therapeutic tools in diagnosis or treatment of localized (stages I and II), locally advanced (stage III), or advanced (stage IV) prostate cancer.

The technology relates in part to methods for inducing partial apoptosis of cells that express an inducible caspase polypeptide. The technology further relates in part to methods for inducing partial apoptosis of cells that express an inducible modified caspase polypeptide, having a modified dose response curve to the multimeric ligand inducer. The technology also relates in part to methods for cell therapy using cells that express the inducible caspase polypeptide or the inducible modified caspase polypeptide, where the proportion of caspase polypeptide-expressing cells eliminated by apoptosis is related to the administered amount of the multimeric ligand inducer.

Described herein is a reliable method for preparing a potent vaccine useful for immunotherapy comprising the step of cryopreserving a population of cells undergoing immunogenic cell death, and using such cells to activate dendritic cells for use in immunotherapy. In a specific embodiment, the method comprises cryopreserving cancer cells undergoing cell death, which can be used to prepare a pharmaceutical composition for immunotherapy against cancer.

The invention relates to an inhibitory chimeric antigen receptor (N-CAR) comprising an extracellular domain comprising an antigen binding domain, a transmembrane domain, and, an intracellular domain wherein the intracellular domain comprises an Immunoreceptor Tyrosine-based Switch Motif ITSM, wherein said ITSM is a sequence of amino acid TX.sub.1YX.sub.2X.sub.3X.sub.4, wherein X.sub.1 is an amino acid X.sub.2 is an amino acid X.sub.3 is an amino acid and X.sub.4 is V or

The present disclosure provides compositions and methods that rapidly and selectively modify cells of the immune system to achieve therapeutic objectives. The methods can be practiced in vivo and any cell type that expresses a known marker can be targeted for a therapeutic objective.

This document provides methods and materials involved in binding a binder (e.g., an antibody, antigen binding fragment, antibody domain, CAR, cell engager, and/or ADC) to a PSMA polypeptide. For example, binders (e.g., antibodies, antigen binding fragments, antibody domains, CARs, cell engagers, and/or ADCs) that bind to a PSMA polypeptide and methods and materials for using one or more such binding molecules to treat a mammal (e.g., a human) having cancer are provided.