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 CD66e polypeptide. For example, binders (e.g., antibodies, antigen binding fragments, antibody domains, CARs, cell engagers, and/or ADCs) that bind to a CD66e 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.

The present invention provides a glycosylated CEA-specific single-chain antibody, and a chimeric antigen receptor (CAR) targeting a glycosylated CEA, which can be used in manufacture of an agent or a medicament for diagnosis or treatment of a tumor overexpressing glycosylated CEA.

The present disclosure generally relates to, among other things, a new class of receptors engineered to modulate transcriptional regulation in a ligand-dependent manner. In particular, the new receptors contain a heterologous stop-transfer-sequence and a ?-secretase cleavable transmembrane domain. The disclosure also provides compositions and methods useful for producing such receptors, nucleic acids encoding same, host cells genetically modified with the nucleic acids, as well as methods for modulating an activity of a cell and/or for the treatment of various diseases such as cancers.

The present invention generally relates to specificity assays using cell cultures, in particular to chimeric antigen receptor (CAR) expressing reporter T (CAR-T) cell assays to test novel antigen binding moieties in different formats. Furthermore, the present invention relates to the use of CAR-T cells, transfected/transduced with an engineered chimeric antigen receptor (CAR) comprising a target antigen binding moiety capable of specific binding to a recognition domain of an antigen binding molecule. The invention also relates to methods and kits for specificity testing of a candidate antigen binding moiety and/or nucleic acid molecules and vectors expressing engineered CARs.

The present invention encompasses methods and compositions for the generation and use of cytotoxic T lymphocytes that target multiple viruses or that are specific for multiple tumor antigens. In specific embodiments, the generation methods employ use of certain cytokines to promote proliferation and reduce cell death in an activated T cell population and/or that employ a particular bioreactor having a gas permeable membrane.

A tumor or a malignant disease can be treated by the combined administration of mesenchymal stem cells (MSCs) with an anti-tumor immunotherapy. The MSCs need not be genetically modified, and do not include exogenous nucleic acids that encode immune response-stimulating cytokines. The anti-tumor immunotherapy can be a cellular immunotherapy, such as administration of chimeric antigen receptor (CAR) T cells, in which the T cell receptor binds specifically to a tumor-associated antigen.

A tumor or a malignant disease can be treated by the combined administration of mesenchymal stem cells (MSCs) with an anti-tumor immunotherapy. The MSCs need not be genetically modified, and do not include exogenous nucleic acids that encode immune response-stimulating cytokines. The anti-tumor immunotherapy can be a cellular immunotherapy, such as administration of chimeric antigen receptor (CAR) T cells, in which the T cell receptor binds specifically to a tumor-associated antigen.

Genetically modified compositions, such as adenoviral vectors and T cells, for treating diseases such as cancer and infectious diseases are disclosed. Also disclosed are the methods of making and using the genetically modified compositions in treating diseases such as cancer and infectious diseases.

The present technology comprises methods for regulating an the immune system, and in particular methods for the regulation of a specific immune response, including the regulation of lymphocyte activity. Methods of the present technology comprise both the negative and positive modulation of CEACAM1 protein function.

The present disclosure provides compositions and methods for treating a peritoneal cancer in a subject. The methods include administering a T cell which is genetically modified to express a chimeric T cell receptor protein. The chimeric T cell receptor protein may include a T cell receptor signaling domain fused to the tumor associated antigen-binding fragment of an antibody or a T cell receptor signaling domain fused to a naturally occurring ligand which specifically binds to a tumor cell surface protein. The compositions and methods disclosed herein are therapeutically effective to reduce, for example, tumor burden, abdominal ascites, peritoneal mucin, or serum tumor marker levels.