190 results about "Antigen recognition" patented technology

The present invention provides immunoresponsive cells, including T cells, cytotoxic T cells, regulatory T cells, and Natural Killer (NK) cells, expressing at least one of an antigen-recognizing receptor and a co-stimulatory ligand and methods of use therefore for the treatment of neoplasia and other pathologies where an increase in an antigen-specific immune response is desired.

An isolated monoclonal antibody or fragment thereof binding prostate specific membrane antigen (PSMA) preferably in its native form on the surface of tumour cells. A conjugate of the antibody with an active ingredient and modified forms of the antigen-binding antibody fragment are also provided. The complete antibody and the antigen-recognising fragment thereof are used alone or conjugated for the treatment and the diagnosis of tumours or tissues associated to the tumour overexpressing the PSMA antigen, preferably prostatic neoplastic diseases.

An antibody comprising an antigen recognition region which comprises CDR amino acid sequences set forth in SEQ ID NO: 7, 8, 9, 10, 11 and 12.

The present invention pertains to antigen recognizing constructs against tumor associated antigens (MAGEA1). The invention in particular provides novel T cell receptor (TCR) based molecules which are selective and specific for the tumor expressed antigen of the invention. The TCR of the invention, and TAA binding fragments derived therefrom, are of use for the diagnosis, treatment and prevention of TAA expressing cancerous diseases. Further provided are nucleic acids encoding the antigen recognizing constructs of the invention, vectors comprising these nucleic acids, recombinant cells expressing the antigen recognizing constructs and pharmaceutical compositions comprising the compounds of the invention.

Embodiments of the invention include methods and compositions related to improved cells encoding a chimeric antigen receptor that is specific for two or more antigens. In certain aspects the receptor encompasses two or more non-identical antigen recognition domains. The antigens are tumor antigens, in particular embodiments.

Disclosed are useful constructs and methods for the expression of proteins using primary translation products that are processed within a recombinant host cell. Constructs comprising a single open reading frame (sORF) are described for protein expression including expression of multiple polypeptides. A primary translation product (a pro-protein or a polyprotein) contains polypeptides such as inteins or hedgehog family auto-processing domains, or variants thereof, inserted in frame between multiple protein subunits of interest. The primary product can also contain cleavage sequences such as other proteolytic cleavage or protease recognition sites, or signal peptides which contain recognition sequences for signal peptidases, separating at least two of the multiple protein subunits. The sequences of the inserted auto-processing polypeptides or cleavage sites can be manipulated to enhance the efficiency of expression of the separate multiple protein subunits. Also disclosed are independent aspects of conducting efficient expression, secretion, and / or multimeric assembly of proteins such as immunoglobulins. Where the polyprotein contains immunoglobulin heavy and light chain segments or fragments capable of antigen recognition, in an embodiment a selectable stoichiometric ratio is at least two copies of a light chain segment per heavy chain segment, with the result that the production of properly folded and assembled functional antibody is made. Modified signal peptides, including such from immunoglobulin light chains, are described.

In one embodiment, the present disclosure provides an engineered cell having a first chimeric antigen receptor polypeptide including a first antigen recognition domain, a first signal peptide, a firsthinge region, a first transmembrane domain, a first co- stimulatory domain, and a first signaling domain; and a second chimeric antigen receptor polypeptide including a second antigen recognition domain, a second signal peptide, a second hinge region, a second transmembrane domain, a second co- stimulatory domain, and a second signaling domain, wherein the first antigen recognition domain is different from the second antigen recognition domain.