Abstract: Antigen binding domain polypeptides (ABD) specific for human CD93 are provided, which ABD may be formatted as antibodies, as chimeric antigen receptors, and the like. T cells comprising an anti-CD93 CAR are useful in the treatment of cancer, e.g. hematologic malignancies.

Abstract: Provided are methods of selecting for cells that comprise two or more separate expression constructs. In certain embodiments, the methods comprise contacting a population of cells with two or more separate expression constructs under conditions in which the two or more expression constructs are delivered to cells of the population of cells. The two or more separate expression constructs comprise a first expression construct that encodes a fusion protein comprising a selection marker, a protein localization tag, and a protease cleavage site disposed between the selection marker and the protein localization tag. The second expression construct encodes a protein required for cell surface expression of the selection marker. Such methods further comprise selecting for cells exhibiting cell surface expression of the selection marker. Related cells, compositions, kits and therapeutic methods are also provided.

Abstract: Provided are recombinant polypeptides that comprise a protein of interest, a protein localization tag, and a protease cleavage site disposed between the protein of interest and the protein localization tag. In certain embodiments, the recombinant polypeptides further comprise a protease, where the protease cleavage site is a cleavage site for the protease. Also provided are nucleic acids that encode the recombinant polypeptides, cells that comprise such nucleic acids, and compositions (e.g., pharmaceutical compositions) that comprise such cells. Methods of regulating cellular localization of a protein of interest, and methods of administering a regulatable cell-based therapy to an individual in need thereof, are also provided.

Abstract: The invention relates to immunotherapeutic treatment of cancer. In particular, the invention relates to methods of treating cancer carrying a histone H3 K27M (H3K27M) mutation (e.g., diffuse midline glioma with H3K27M mutation) using immunotherapeutic compositions comprising immune cells engineered to express GD2-specific chimeric antigen receptors.

Abstract: The invention relates to immunotherapeutic treatment of cancer. In particular, the invention relates to methods of treating cancer carrying a histone H3K27M (H3K27M) mutation (e.g., diffuse midline glioma with H3K27M mutation) using immunotherapeutic compositions comprising immune cells engineered to express GD2-specific chimeric antigen receptors.

Abstract: The present disclosure is directed to chimeric antigen receptors binding to Glypican 2, nucleic acids encoding the same, and cells expressing the same, and methods of using such cells to treat cancers that express or overexpress the Glypican 2 antigen.

Abstract: Antigen binding domain polypeptides (ABD) specific for human CD93 are provided, which ABD may be formatted as antibodies, as chimeric antigen receptors, and the like. T cells comprising an anti-CD93 CAR are useful in the treatment of cancer, e.g. hematologic malignancies.

Abstract: Provided herein are cell surface receptors that include an extracellular binding domain, a transmembrane domain, an intracellular signaling domain, and a protease cleavage site disposed between the extracellular binding domain and the intracellular signaling domain. In certain aspects, the cell surface receptors are engineered cell surface receptors, such as chimeric antigen receptors (CARs). Also provided are cells that include such receptors (e.g., where the cells express the receptors on their surface) and pharmaceutical compositions including such cells. Nucleic acids that encode the cell surface receptors, cells including such nucleic acids, and pharmaceutical compositions including such cells, are also provided. Also provided are methods for regulating signaling of a cell surface receptor, and methods of using the cells of the present disclosure, including methods of using such cells to administer a regulatable cell-based therapy to an individual.

Abstract: Provided are polypeptides that include, from N-terminus to C-terminus, a chimeric antigen receptor (CAR), a protease, and a degron, where the polypeptide further includes a cleavage site for the protease disposed between the CAR and the degron. Also provided are cells that include such polypeptides (e.g., where the cells express the CAR on their surface) and pharmaceutical compositions including such cells. Nucleic acids that encode the polypeptides, cells including such nucleic acids, and pharmaceutical compositions including such cells, are also provided. Also provided are methods for controlling the expression of a CAR on the surface of a cell, and methods of using the cells of the present disclosure, including methods of using such cells to administer a regulatable CAR cell-based therapy (e.g., a regulatable CAR T cell therapy) to an individual.

Abstract: The invention relates to immunotherapeutic treatment of cancer. In particular, the invention relates to methods of treating cancer carrying a histone H3K27M (H3K27M) mutation (e.g., diffuse midline glioma with H3K27M mutation) using immunotherapeutic compositions comprising immune cells engineered to express GD2-specific chimeric antigen receptors.