Processes are described for the preparation of F-benzoxazinorifamycin I: ##STR00001##
and intermediates for conjugation with an antibody.

Herein is reported a conjugate comprising an antigen and an antibody that specifically binds to the antigen wherein a covalent bond is formed between the antigen and an amino acid residue in the CDR2 of the antibody, an antibody comprising a cysteine residue at amino acid position 53 (according to Kabat) in the heavy chain CDR2 and uses thereof.

The invention provides compositions comprising a single protein having one or more molecules of a pharmaceutical agent tightly bound therein. The compositions are useful to decrease the toxicity and/or to widen the therapeutic window of the pharmaceutical agent. The invention also provides methods for preparing such a composition.

This invention relates to a pharmaceutical composition for treatment of a bone disease comprising, as an active ingredient, a protein comprising an extracellular cysteine-rich domain, which is from the Frizzled receptor selected from the group consisting of mammalian animal-derived Frizzled 1, Frizzled 2, and Frizzled 7 and has activity of increasing bone mass, bone density, and/or bone strength, or a mutant of such domain having sequence identity of 85% or higher to the amino acid sequence of the domain and having activity of increasing bone mass, bone density, and/or bone strength, or a vector comprising a nucleic acid encoding the protein.

The present invention pertains to a fusion polypeptide for use in treating and/or preventing organ failure in a subject suffering from sepsis, said fusion polypeptide comprises at least (i) a first portion being a Fc portion of an immunoglobulin and (ii) a second portion comprising the extracellular portion of the human B7-H1 polypeptide or a variant thereof. Moreover, also encompassed by the invention is a polynucleotide encoding said fusion polypeptide for use in treating and/or preventing organ failure in a subject suffering from sepsis.

Immunoglobulin compositions that simultaneously co-engage antigens, where one of the antigens is bound bivalently and the other antigen is bound monovalently. The novel immunoglobulins described preferably utilize heterodimeric Fc regions.

The invention provides compositions comprising a single protein having one or more molecules of a pharmaceutical agent tightly bound therein. The compositions are useful to decrease the toxicity and/or to widen the therapeutic window of the pharmaceutical agent. The invention also provides methods for preparing such a composition.

The present disclosure provides compositions and methods for efficient and effective protein delivery in vitro and in vivo. In some aspects, proteins are reversibly crosslinked to each other and/or modified with functional groups and protected from protease degradation by a polymer-based or silica-based nanoshell.

The subject invention pertains to methods of acetylation of the Fc region of immunoglobulins, particularly Lys248 of the heavy chain of human Immunoglobulin G (IgG) using a novel Fc-III derived peptide. The acetylation reaction with the phenolic ester with an azide or alkyne enables site-selective functionalization of Lys248 with a bioorthogonal reactive group for further derivatization. Further methods are provided to synthesize an antibody-lipid conjugate that allows for the construction of an immunoliposome that can target cells expressing oncogenes, including HER2+ cells, and a bispecific antibody complex (bsAbC) linking two distinct antibodies. The bsAbC can induce an effector-cell mediated cytotoxicity at nanomolar concentrations.

The invention relates to a chimeric monomer-dimer hybrid protein wherein the protein comprises a first and a second polypeptide chain, the first polypeptide chain comprising at least a portion of an immunoglobulin constant region and a biologically active molecule, and the second polypeptide chain comprising at least a portion of an immunoglobulin constant region without the biologically active molecule of the first chain. The invention also relates to methods of using and methods of making the chimeric monomer-dimer hybrid protein of the invention.