231 results about "Immune effector cell" patented technology

The present invention discloses bispecific antibodies comprising two antibody variable domains on a single polypeptide chain, wherein a first portion of the bispecific antibody is capable of recruiting the activity of a human immune effector cell by specifically binding to an effector antigen on the human immune effector cell, the first portion consisting of one antibody variable domain, and a second portion of the bispecific antibody specifically binding to a target antigen other than the effector antigen, the target antigen on a target cell other than the human immune effector cell, the second portion comprising one antibody variable domain.

Bispecific IgG antibodies which bind to CLEC12A and an antigen on an immune effector cell are provided.

The invention relates, in part, to a method of treating a subject comprising administering to the subject a low, immune enhancing of a mTOR inhibitor and an immune effector cell engineered to express a CAR.

Methods and compositions are disclosed to engineer plastids comprising heterologous genes encoding immuno-activating domains fused to an extracellular domain (ECD) of a receptor or surface glycoprotein, a growth factor or an enzyme and produced within a subcellular organelle, such as a chloroplast. The immuno-activating domains may include those regions of a protein capable of modulating the interaction between immune effector cells via proteins containing stereoselective binding domains and specific ligands, such as the Fc regions of antibodies. The present disclosure also demonstrates the utility of plants, including green algae, for the production of complex multi-domain fusion proteins as soluble bioactive therapeutic agents.

The invention relates to the field of molecular medicine. In particular, it relates to compositions and methods to enhance the clearance of aberrant cells, e.g. cancer cells or virus-infected cells, by the host's immune system. Provided is a composition comprising (i) a therapeutic compound that can trigger a host's immune effector cells against an aberrant cell, such as a therapeutic antibody, and (ii) at least one agent capable of reducing or preventing inhibitory signal transduction initiated via SIRPalpha.

The present invention calls utilized genes differentially expressed in target cells to design vaccines to generate an immune response. Unlike prior art methods that seek to identify antigenic proteins from phenotypic analysis, the subject method applies functional genomics for antigen identification. The method is exemplified herein and therefore provides compositions and methods for inducing an immune response against gp 100 melanoma cells and for inducing an immune response against HER-2+cells. Cancer vaccines and adoptive immunotherapeutic methods to treat and prevent conditions associated with the presence of these cells in a subject also are provided. The methods can be practiced by administering the appropriate gene or cancer vaccine, antibody, protein, polypeptide, antigen-presenting cell or immune effector cell.

The present invention relates to bispecific molecules that are immunoreactive to an activating receptor of a companion animal immune effector cell and to B7-H3, and to the use of such bispecific molecules in the treatment of cancer in companion animals.

Provided herein are chimeric antigen receptors (CARs) for cancer therapy, and more particularly, CARs containing a scFv from a CD33 monoclonal antibody. Provided are immune effector cells containing such CARs, and methods of treating proliferative disorders such as acute myeloid leukemia (AML), and relapsed or refractory AML.

This invention is in the area of compositions and methods for regulating chimeric antigen receptor immune effector cell, for example T-cell (CAR-T), therapy to modulate associated adverse inflammatory responses, for example, cytokine release syndrome and tumor lysis syndrome, using targeted protein degradation.

The invention provides a system that comprises pharmaceutical agents for use in immunotherapy for reducing the side-effects of an antigen-recognizing receptor against antigen-expressing non-target cells in an individual. The system includes an antigen-recognizing receptor that specifically recognizes an antigen on target cells and at least on one hematopoietic cell type in the individual. The antigen-recognizing receptor is exemplified by chimeric antigen receptors (CAR) be expressed on the surface of an immune effector cells. The system also includes hematopoietic cells resistant to recognition of the same antigen by the antigen-recognizing receptor.

The invention relates to a chimeric antigen receptor (CAR) immune cell provided with a safety switch as well as a preparation method and an application of the CAR immune cell. The CAR immune cell carrying the safety mechanism (the safety switch) comprises a CAR coding nucleotide sequence, wherein the structure of the nucleotide sequence comprises a receptor structural domain for recognizing tumor-specific antigen or tumor-associated antigen, a transmembrane-stimulation structural domain, a CD3[zeta] stimulating signal transduction region and a suicide gene region. The CAR immune cell can be obtained as different immunological effect cells are amplified and a CAR sequence carrying a suicide mechanism is transduced; corresponding antigens of tumor cells are recognized by virtue of CAR; and the CAR immune cell can generate a specific killing effect on the tumor cells. The CAR immune cell, when used, is infused in a gradient mode and dynamic change in related cell factor levels is monitored; in case of need, a suicide gene can be started by virtue of drugs to scavenge the immunological effect cells, so that optimal balance between safety and a curative effect is achieved; therefore, the safety of the technology applied to the treatment of tumors in the clinical field is guaranteed to the greatest extent.

Compositions and methods are provided for the treatment of cancer. An immune effector cell population is pre-infected with an oncolytic virus. The combined therapeutic is safe and highly effective, producing an enhanced anti-tumor effect compared to either therapy alone. The methods of the invention thus provide for a synergistic effect based on the combined biotherapeutics.

The present invention relates to an immune effector cell expressing a chimeric protein and an application thereof, in particular to the immune effector cell of the chimeric protein expressing an extracellular domain containing a TGF-beta receptor and an intracellular signal domain of IL-2 family protein, a pharmaceutical composition comprising the same, and the application of the immunological effector cell or a pharmaceutical composition as described above for preparing a drug for preventing or treating a tumor or pathogenic microorganism infection. The immune effector cell expressing the chimeric protein is capable of transforming the stimulation of TGF-beta into a positive signal of IL-2, IL-7 or IL-21, inhibiting TGF-beta-induced Treg differentiation, and promoting the proliferation and survival of immune cells; also reduces the effect of TGF-beta on cell killing ability, and shows a better anti-tumor ability.

The invention relates to a tumor treatment method and particularly provides joint use of immunologic effector cells and radiation in tumor treatment, and a method of treating an individual with tumorsby joint use of immunologic effector cells and local radiation. The method provides no lymphocyte removal for the individual; the immunologic effector cells comprise a receptor to recognize tumor antigens to tumors. Tests prove that the method provided herein has significant antitumor effect for solid tumors; at the premise of pretreatment without removing lymphocytes, the joint treatment of CAR-T cell therapy and local radiotherapy with no lymphocyte removal helps attain better treatment effect than CAR-T treatment with lymphocyte removal; antitumor treatment effect is improved greatly.

The present invention relates to a monoclonal antibody directed against the CD20 antigen, wherein the variable region of each of the light chains thereof is encoded by a sequence which shares at least 70% identity with murine nucleic acid sequence SEQ ID No. 5, the variable region of each of the heavy chains thereof is encoded by a sequence which shares at least 70% identity with murine nucleic acid sequence SEQ ID No. 7, and the constant regions of light and heavy chains thereof are constant regions from a non-murine species, as well as for activation of FcγRIIIA receptors in immune effector cells, and for the manufacture of a drug especially for the treatment of leukaemia or lymphoma.

The invention relates to an immunologic effector cell which expresses a chimeric antigen receptor targeting GPC3 and exogenous IL12. The invention also provides a medicinal composition containing theimmunologic effector and a method for treating tumor, particularly GPC3 positive tumor through the immunologic effector cell or the medicinal composition. The immunologic effector cell is effective toentity tumor cell in vitro, and is outstanding in effect of extinguishing the entity tumor cell in vivo.

The invention provides use of a combination of a TOLL-like receptor stimulating agent and an immune effector cell in preparation of antitumor drugs or anti-pathogen drugs or anti-immunosuppression drugs. The TOLL-like receptor stimulating agent can be used for reinforcing the effect of the immune effector cell. The invention further provides a composition of the TOLL-like receptor stimulating agent and the immune effector cell.

Disclosed are a chimeric antigen receptor (CAR) targeting CLD18A2, and preparation method and use thereof. The extracellular binding region of the CAR comprises a protein specifically recognizing CLD18A2. The immune effector cell modified by the CAR can be used to treat tumors such as pancreatic cancer and stomach cancer.

The invention relates to the technical field of biological pharmacy and particularly discloses a bispecific antibody for CD20 and CD3. The bispecific antibody comprises univalent unit, a single-chainunit and a linker, wherein the univalent unit is a light chain-heavy chain pair with a specific binding capability for an antigen CD20 on the surface of a tumor cell; the single-chain unit can be usedfor specifically binding a CD3 antigen on the surface of an immune cell; the end N of a heavy chain and the end C of a light chain of the single-chain unit are connected by the linker to form a Fab-Fc form; the univalent unit is connected with the single-chain unit through a disulfide bond of a hinge region and a pestle mortar structure of a CH3 structural domain. According to the bispecific antibody, CD20 and CD3 can be specifically bound and the immune effector cell can be targeted to the tumor cell, so that the killing effect of the immune effector cell on the tumor cell is improved; the bispecific antibody can be used for treating CD20 antigen positive B-cell neoplasms, comprising non-Hodgkin lymphoma, chronic lymphocytic leukemia and the like, and has a broad application prospect inthe field of immunotherapy of tumors.

The invention relates to an immune effector cell expressing a chimeric antigen receptor targeting GPC3 and a PD-L1 blocker. The invention also provides a pharmaceutical composition containing the immune effector cell and a method for treating tumors through the immune effector cell or pharmaceutical composition and particularly treating GPC3-positive tumors. The immune effector cell is effective to the solid tumor cells in vitro and can kill and damage the solid tumor cells in vivo.