Provided are conjugates including a targeting moiety that binds to a cell surface molecule of a target cell and a target cell surface-editing enzyme. Also provided are compositions and kits that include the conjugates, as well as methods of using the conjugates. Methods of making conjugates are also provided.

The present disclosure provides methods of administering chimeric and hybrid Factor VIII (FVIII) polypeptides comprising FVIII and Fc to subjects at risk of developing inhibitory FVIII immune responses, including anti-FVIII antibodies and/or cell-mediated immunity. The administration is sufficient to promote coagulation and to induce immune tolerance to FVIII. The chimeric polypeptide can comprise full-length FVIII or a FVIII polypeptide containing a deletion, e.g., a full or partial deletion of the B domain.

An isolated or recombinant aminopeptidase N (pepN) polypeptide having inflammatory cytokine production and cytolysis inhibiting activity is provided. A method of inhibiting inflammatory cytokine production and cytolysis in a subject in need thereof is also provided, comprising administering to the subject an inflammatory cytokine production and cytolysis inhibiting amount of the isolated or recombinant pneumococcal pepN polypeptide. A method of treating a disease, disorder, or condition characterized by or associated with undesirable inflammatory cytokine production and cytolysis in a subject in need thereof is also provided, comprising administering to the subject a therapeutically effective amount of an isolated or recombinant pepN polypeptide. A method of treating pneumococcal infection in a subject in need thereof is also provided comprising administering to the subject a therapeutically effective amount of an anti-pepN polypeptide inhibitory agent.

The present invention provides, in part, protein-drug conjugates comprising an anti-fibroblast growth factor receptor 3 (FGFR3) (e.g., human FGFR3) antigen-binding protein (e.g., scFv, Fab) conjugated to a molecular cargo (e.g., polynucleotides, polypeptides, liposomes or lipid nanoparticles) for delivery of the molecular cargo to a targeted tissue (e.g., brain). Methods for treating various diseases or disorders, such as neurological diseases, with the conjugates are provided.

A novel anti-human CD73 humanized antibody is capable of specifically binding to a CD73 antigen and has high affinity and biological activity.

This disclosure provides antibody-urease conjugates having therapeutic and diagnostic utility. More specifically, the disclosure relates to diagnostic and/or therapeutic conjugates that are prepared by conjugating one or more whole antibodies to urease.

An antibody conjugating peptide including an amino acid having a photoreactive functional group, a physiologically active substance modified with the conjugating peptide, and an antibody conjugate having an antibody linked to the physiologically active substance are disclosed. When the physiologically active substance modified with the conjugating peptide is linked to the antibody, the conjugation efficiency between the antibody and the physiologically active substance is remarkably improved as compared to that of the conventional art, and thus, the drug may be firmly bound without impairing the specificity of the antibody, thereby making it possible to accelerate commercialization of the antibody conjugate.

Hybrid nuclease molecules and methods for treating an immune-related disease or disorder in a mammal, and a pharmaceutical composition for treating an immune-related disease in a mammal.

Peptides that specifically bind erythrocytes are described. These are provided as peptidic ligands having sequences that specifically bind, or as antibodies or fragments thereof that provide specific binding, to erythrocytes. The peptides may be prepared as molecular fusions with therapeutic agents, tolerizing antigens, or targeting peptides. Immunotolerance may be created by use of the fusions and choice of an antigen on a substance for which tolerance is desired.

Compositions and methods for treating lysosomal storage diseases are disclosed. Biotherapeutic complexes containing an internalization effector binding domain and a lysosomal replacement enzyme activity are disclosed. The biotherapeutic complexes are capable of entering cells, segregating to the lysosome, and delivering the replacement enzyme activity to the lysosome.