Abstract: Chimeric antigen receptors containing mesothelin antigen binding domains are disclosed. Nucleic acids, recombinant expression vectors, host cells, antigen binding fragments, and pharmaceutical compositions, relating to the chimeric antigen receptors are also disclosed. Methods of treating or preventing cancer in a subject, and methods of making chimeric antigen receptor T cells are also disclosed.

Abstract: Polypeptides and proteins that specifically bind to and immunologically recognize CD276 are disclosed. Chimeric N antigen receptors (CARs), anti-CD276 binding moieties, nucleic acids, recombinant expression vectors, host cells, populations of cells, pharmaceutical compositions, and conjugates relating to the polypeptides and proteins are also disclosed. Methods of detecting the presence of (a) cancer or (b) tumor vasculature in a mammal and methods of (a) treating or preventing cancer or (b) reducing tumor vasculature in a mammal are also disclosed.

Abstract: Described herein is the identification of human monoclonal antibodies that bind GPC3 or heparan sulfate (HS) chains on GPC3 with high affinity. The antibodies described herein are capable of inhibiting HCC cell growth and migration. Provided are human monoclonal antibodies specific for GPC3 or HS chains on GPC3, including immunoglobulin molecules, such as IgG antibodies, as well as antibody fragments, such as single-domain VH antibodies or single chain variable fragments (scFv). Further provided are compositions including the antibodies that bind GPC3 or HS chains on GPC3, nucleic acid molecules encoding these antibodies, expression vectors comprising the nucleic acids, and isolated host cells that express the nucleic acids. Methods of treating cancer and/or inhibiting tumor growth or metastasis are also provided. Further provided are methods of detecting cancer in a subject and confirming a diagnosis of cancer in a subject.

Abstract: Human anti-human folate receptor beta antibodies and antigen-binding fragments thereof are described, as well as methods of using such antibodies and fragments to treat inflammatory disorders or cancers expressing cell surface FR?.

Abstract: The invention provides a construct comprising two or more fusion proteins of Formulas (I)-(IV): A-(optional linker)-C-(optional linker)-B (Formula I), B-(optional linker)-D-(optional linker)-E-(optional linker)-B (Formula II), A-(optional linker)-C (Formula III), and B-(optional linker)-D-(optional linker)-E (Formula IV), wherein A denotes an antibody or antibody fragment, B denotes a single domain CD4, C denotes an immunoglobulin light chain constant region D denotes an immunoglobulin heavy chain constant region, and E denotes an Fc region or a portion thereof that is optionally defucosylated.

Abstract: Described herein is the identification of human monoclonal antibodies that bind GPC3 or heparan sulfate (HS) chains on GPC3 with high affinity. The antibodies described herein are capable of inhibiting HCC cell growth and migration. Provided are human monoclonal antibodies specific for GPC3 or HS chains on GPC3, including immunoglobulin molecules, such as IgG antibodies, as well as antibody fragments, such as single-domain VH antibodies or single chain variable fragments (scFv). Further provided are compositions including the antibodies that bind GPC3 or HS chains on GPC3, nucleic acid molecules encoding these antibodies, expression vectors comprising the nucleic acids, and isolated host cells that express the nucleic acids. Methods of treating cancer and/or inhibiting tumor growth or metastasis are also provided. Further provided are methods of detecting cancer in a subject and confirming a diagnosis of cancer in a subject.

Abstract: The invention provides a polypeptide comprising a single domain CD4, as well as a fusion protein comprising the single domain CD4 and one or more fusion partners. A nucleic acid encoding the polypeptide or fusion protein, as well as compositions or cells comprising the polypeptide, fusion protein, or nucleic acid also are provided.

Abstract: Human anti-human folate receptor beta antibodies and antigen-binding fragments thereof are described, as well as methods of using such antibodies and fragments to treat inflammatory disorders or cancers expressing cell surface FR?.

Abstract: Polypeptides and proteins that specifically bind to and immunologically recognize CD276 are disclosed. Chimeric antigen receptors (CARs), anti-CD276 binding moieties, nucleic acids, recombinant expression vectors, host cells, populations of cells, and pharmaceutical compositions relating to the polypeptides and proteins are also disclosed. Methods of detecting the presence of cancer in a mammal and methods of treating or preventing cancer in a mammal are also disclosed.

Abstract: Polypeptides and proteins that specifically bind to and immunologically recognize CD276 are disclosed. Chimeric antigen receptors (CARs), anti-CD276 binding moieties, nucleic acids, recombinant expression vectors, host cells, populations of cells, and pharmaceutical compositions relating to the polypeptides and proteins are also disclosed. Methods of detecting the presence of cancer in a mammal and methods of treating or preventing cancer in a mammal are also disclosed.

Abstract: Fc domains and CH3 domains are disclosed that bind the neonatal Fc (FcRn) receptor and are at least 99% monomeric. Monomeric Fc domain molecules and CH3 domain molecules are disclosed herein that include a monomeric Fc domain or a monomeric CH3 domain and an effector molecule. In some embodiments, the monomeric Fc or monomeric CH3 domain include amino acid substitutions and/or CDR insertions in the beta strands such that they specifically bind an antigen. Methods for using these monomeric Fc domains, monomeric CH3 domains, monomeric Fc domain molecules and CH3 domain molecules are also provided.

Abstract: The identification of Her2-specific monoclonal antibody m860 is described. The m860 antibody was identified from a human naïve phage display Fab library by panning against the extracellular domain of human Her2. M860 binds to cell surface-associated Her2 with an affinity comparable to that of trastuzumab (Herceptin®), but binds to a different epitope. Using site-specific glycan engineering, m860 was conjugated to the small molecule drug auristatin F. The antibody-drug conjugate was stable, bound cell-surface expressed Her2 and exhibited potent cell killing of Her2-positive cancer cells, including trastuzumab-resistant breast cancer cells.

Abstract: The present invention provides new, fully human EphA4 monoclonal antibodies with distinct binding characteristics. Also disclosed are antigen binding fragments of these antibodies, bispecific forms of these antibodies, and conjugates of these antibodies. In addition, nucleic acids encoding these antibodies, antigen binding fragments, bispecific antibodies and conjugates are disclosed. These monoclonal antibodies, antigen binding fragments, bispecific antibodies, conjugates, nucleic acids and vectors are of use for identifying and treating a subject with a disease or condition involving abnormal EphA4-mediated signaling.

Abstract: The invention relates to a human anti-dengue virus antibody (an anti-DENV antibody) that binds to a DENV envelope protein and is cross-reactive with DENV serotype 1, DENV serotype 2, DENV serotype 3, and DENV serotype 4. The disclosure provides an anti-DENV antibody that cross-reacts with and neutralizes all four DENV serotypes. Also provided is a nucleic acid molecule that encodes such an anti-DENV antibody. Also provided is a method to produce and use such an antibody or nucleic acid molecule encoding such an antibody.

Abstract: Disclosed herein are human monoclonal antibodies that specifically bind both IGF-I and IGF-II with picomolar affinity and potently inhibit the IGF-IR signal transduction function. These antibodies are active in both an IgG and a scFv format. Bispecific forms of these antibodies are also disclosed. Nucleic acids encoding these antibodies, vectors including these nucleic acids, and host cells transformed with these vectors are also disclosed herein. Also disclosed are pharmaceutical compositions including these antibodies. Methods are provided for treating a subject with cancer and for inhibiting phosphorylation of the insulin-like growth factor-I receptor. Methods are also provided for diagnosing cancer.

Abstract: Fc domains and CH3 domains are disclosed that bind the neonatal Fc (FcRn) receptor and are at least 99% monomeric. Monomeric Fc domain molecules and CH3 domain molecules are disclosed herein that include a monomeric Fc domain or a monomeric CH3 domain and an effector molecule. In some embodiments, the monomeric Fc or monomeric CH3 domain include amino acid substitutions and/or CDR insertions in the beta strands such that they specifically bind an antigen. Methods for using these monomeric Fc domains, monomeric CH3 domains, monomeric Fc domain molecules and CH3 domain molecules are also provided.

Abstract: Disclosed herein are isolated human monoclonal antibodies that specifically bind human CD22 with a dissociation constant (Kd) of 25 nM or less. Nucleic acids encoding these antibodies, expression vectors including these nucleic acid molecules, and isolated host cells that express the nucleic acid molecules are also disclosed. The antibodies can be used to detect human CD22 in a sample. In some cases, CD22 is soluble CD22. Methods of diagnosing a B-cell malignancy, or confirming a B-cell malignancy diagnosis, are disclosed herein that utilize these antibodies. Methods of treating a subject with a B-cell malignancy are also disclosed.

Abstract: Antibodies and antibody fragments that bind to insulin-like growth factor (IGF) 1 receptor (IGF-1R) or IGF-2, as well as methods of using the antibodies for inhibiting the IGF-mediated signaling pathway, inhibiting IGF-1R signaling, and treating cancer, are described. A method of detecting the presence of IGF-1R or IGF-2 in a sample using the disclosed antibodies and antibody fragments is also described.

Abstract: Described herein are engineered antibody constant domain molecules, such as CH2 or CH3 domain molecules, comprising at least one mutation, or comprising at least one complementarity determining region (CDR), or a functional fragment thereof, engrafted in a loop region of the CH2 domain. The CH2 domain molecules described herein are small, stable, soluble, exhibit little to no toxicity and are capable of binding antigen.

Abstract: The presently disclosed subject matter provides for methods and compositions for enhancing the immune response toward cancers and pathogens. It relates to chimeric antigen receptors (CARs) that specifically target human mesothelin, and immunoresponsive cells comprising such CARs. The presently disclosed mesothelin-targeted CARs have enhanced immune-activating properties, including anti-tumor activity.