411 results about "Tumor associated antigen" patented technology

This invention relates to monovalent and multivalent, monospecific binding proteins and to multivalent, multispecific binding proteins. One embodiment of these binding proteins has one or more binding sites where each binding site binds with a target antigen or an epitope on a target antigen. Another embodiment of these binding proteins has two or more binding sites where each binding site has affinity towards different epitopes on a target antigen or has affinity towards either a target antigen or a hapten. The present invention further relates to recombinant vectors useful for the expression of these functional binding proteins in a host. More specifically, the present invention relates to the tumor-associated antigen binding protein designated RS7, and other EGP-1 binding-proteins. The invention further relates to humanized, human and chimeric RS7 antigen binding proteins, and the use of such binding proteins in diagnosis and therapy.

The present invention is directed to a functional T cell receptor (TCR) fusion protein (TFP) recognizing and binding to at least one MHC-presented epitope, and containing at least one amino acid sequence recognizing and binding an antigen. The present invention is further directed to an isolated nucleic acid molecule encoding the same, a T cell expressing said TFP, and a pharmaceutical composition for use in the treatment of diseases involving malignant cells expressing said tumor-associated antigen.

Compositions including an antibody single-chain variable fragment (scFv) conjugate that specifically binds to ROR1 tumor-associated antigen are provided. The anti-ROR1 scFv antibody and conjugates may include a biologically-active molecule. Such conjugates may comprise a chimeric receptor to direct T cells to respond to ROR1 cancer cells, Methods to use the scFV conjugates to target cells expressing ROR1 for therapeutic and diagnostic purposes are also provided.

A composition or vaccine composition comprising eight isolated epitopes consisting of YLSGANLNV (SEQ. ID. NO: 1), IMIGVLVGV (SEQ. ID. NO: 2), KLBPVQLWV (SEQ. ID. NO: 3), SMPPPGTRV (SEQ. ID. NO: 4), KVAELVHFL (SEQ. ID. NO: 5), YLQLVFGIEV (SEQ. ID. NO: 6), RLLQETELV (SEQ. ID. NO: 7), and, VVLGVVFGI (SEQ. ID. NO: 8).

The invention relates to chimeric antigen receptors (CAR), particularly relates to dual-signal independent chimeric antigen receptors (dsCAR), and also relates to immune response cells of the dual-signal independent chimeric antigen receptors (dsCAR) and uses of the immune response cells in preparation of drugs for treatment of malignant tumor and virus infected diseases. In detail, the dual-signal independent chimeric antigen receptors (dsCAR) can respectively identify two different family antigens of tumor cells and can respectively transmit two T-cell-activation related signals. One of the CAR can transmit a first T-cell-activation related signal by combing a ligand of a tumor specific antigen or a tumor-associated antigen to decide T-cell killing specificity, and the other CAR can transmit a second T-cell-activation related signal by combing a ligand of a membrane receptor (such as EGFR (epidermal growth factor receptor) family protein) widely expressed by the tumor cells to promote T cell activation, proliferation and survival. The dual-signal independent chimeric antigen receptors (dsCAR) can avoid the potential safety problems on the basis of maintaining curative effects of second generation and third generation CAR.

The present invention provides multispecific antigen-binding molecules and uses thereof. The multispecific antigen-binding molecules comprise a first antigen-binding domain that specifically binds a target molecule, and a second antigen-binding domain that specifically binds an internalizing effector protein. The multispecific antigen-binding molecules of the present invention can, in some embodiments, be bispecific antibodies that are capable of binding both a target molecule and an internalizing effector protein. In certain embodiments of the invention, the simultaneous binding of the target molecule and the internalizing effector protein by the multispecific antigen-binding molecule of the present invention results in the attenuation of the activity of the target molecule to a greater extent than the binding of the target molecule alone. In other embodiments of the invention, the target molecule is a tumor associated antigen, and the simultaneous binding of the tumor associated antigen and the internalizing effector protein by the multispecific antigen-binding molecule of the present invention causes or facilitates the targeted killing of tumor cells.

Disclosed herein are methods for matching a cancer condition with an appropriate immunotherapeutic agent and/or regimen. Also disclosed are methods for confirming diagnosis of a particular type of cancer. Embodiments of the invention disclosed herein are directed to the use of effective combinations of TuAAs to optimize the match between a patient's cancer condition and available immunotherapies.

Methods and vaccines for suppressing formation of or inhibiting growth of tumors in a host are provided, via administration of a vaccine containing either a fusion protein of the tumor associated antigen fused to a truncated form of listeriolysin or a recombinant form of Listeria monocytogenes which grows and spreads and is capable of expressing the tumor associated antigen alone or as a listeriolysin fusion protein.

Disclosed herein are methods and compositions for inducing an immune response against various combinations of tumor-associated antigens, which can promote effective immunologic intervention in pathogenic processes. Embodiments of the invention disclosed herein are directed to the use of effective combinations of TuAAs for the immunotherapy of patients with various types of cancer. Both immunogenic compositions for inducing an immune response to these combinations of antigens and methods for their use are disclosed.

Methods for improved targeting of antibody, antibody fragments, peptides hormones, steroid hormones and conjugates thereof are disclosed. Enhanced delivery to target cells of antibodies or fragments thereof or other receptor-mediated delivery system, such as peptide, specific for a population of cells of a mammal comprises steps of administering to said mammal an adequate dosage of blocking antibodies or fragments thereof or other receptor-mediated delivery system, such as peptide, and administering to said mammal an effective dosage of said antibodies or fragments thereof or other receptor-mediated delivery system, such as peptide, specific for said population of cells. In the preferred embodiment, the specific antibodies are monoclonal antibodies directed toward tumor-associated antigen in man.

The present invention relates to antibody-drug conjugate compounds of Formula I: Ab (L D)p I where one or more macrocyclic depsipeptide drug moieties (D), selected from Aplidin, Didemnin B, Kahalalide F, and analogs and derivatives therefrom, are covalently attached by a linker (L) to an antibody (Ab) which binds to one or more tumor-associated antigens or cell-surface receptors. These compounds may be useful in methods of diagnosis or treatment of cancer, and other diseases and disorders.

The field of the present invention relates to genetically engineered fusion molecules, methods of making said fusion molecules, and uses thereof in anti-tumor immunotherapies. More specifically, the present invention relates to fusion molecule constructs wherein a tumor associated antigen (TAA) antibody (Ab) serves as a targeting moiety to selectively deliver a cytokine to a tumor cell for purposes of killing or inhibiting the growth or proliferation of said tumor cell. In various embodiments, the engineered fusion molecules comprise a TAA Ab fused to an interferon-alpha (IFN-α) mutant molecule. The engineered Ab-IFN-α mutant fusion molecules of the present invention demonstrate improved therapeutic index and preserved or increased efficacy as compared to Ab-wildtype IFN-α fusion molecules, and/or demonstrate improved PK properties as compared to Ab-wildtype IFN-α fusion molecules.

Provided are monoclonal antibodies that detect CD 19 CAR-modified immune cells and CAR-modified immune cells irrespective of the tumor associated antigen they target. Methods of using these functional monoclonal antibodies include, but are not limited to, detection, quantification, activation, and selective propagation of CAR-modified immune cells.

The present invention relates to a vaccine for inducing an immune response to an antigen in a vertebrate (e.g., mammal) comprising an antigen and all or a portion of a stress protein or all or a portion of a protein having an amino acid sequence sufficiently homologous to the amino acid sequence of the stress protein to induce the immune response against the antigen. In a particular embodiment, the present invention relates to vaccines and compositions which induce a CTL response in a mammal comprising an antigen and all or a portion of a stress protein. In another embodiment, the invention relates to vaccines and compositions which induce an immune response to an influenza virus in a mammal comprising an antigen of the influenza virus and all or a portion of one or more stress proteins. The invention also relates to vaccines and compositions for inducing a CTL response to a tumor-associated antigen comprising a tumor-associated antigen and all or a portion of the stress protein. The invention also relates to vaccines and composition for suppressing allergic immune responses to allergens comprising an allergen and all or a portion of a stress protein.

The present invention relates to the engineering of recombinant influenza viruses that express tumor-associated antigens. Expression of tumor-associated antigens by these viruses can be achieved by engineering specific epitopes into influenza virus proteins, or by engineering viral genes that encode a viral protein and the specific antigen as independent polypeptides. Tumor-bearing patients can be immunized with the recombinant influenza viruses alone, or in combination with another treatment, to induce an immune response that leads to tumor reduction. The recombinant viruses can also be used to vaccinate high risk tumor-free patients to prevent tumor formation in vivo.

The invention is related to a recombinant single-chain tri-specific antibody made from anti-Tumor Associated Antigen (TAA) antibody, FC interlinker, anti-CD3 antibody, HSA interlinker and anti-CD28 antibody in turn. Particularly, the invention relates to an anti-CEA, anti-CD3, anti-CD28 recombinant single-chain tri-specific antibody, CEA-scTsAb, which was constructed with three tandem antibody fragments (anti-CEA scFv, anti-CD3 scFv and anti-CD28 single-domain antibody) linked by two interlinkers (FC interlinker, HSA interlinker), and could be appended by C myc tag or histidine tag ((His)₆-tag) at the C terminal. It also concerns a method for construction, expression and purification of the antibody. It also offers the encoded DNA sequence of the antibody, expression vectors and host cells for the vectors.

The invention relates to compositions and methods of constructs comprising a SIRP-α polypeptide, including SIRP-α variants. The constructs may be engineered in a variety of ways to respond to environmental factors, such as pH, hypoxia, and/or the presence of tumor-associated enzymes or tumor-associated antigens. The constructs of the invention may be used to treat various diseases, such as cancer, preferably solid tumor or hematological cancer.