Described is a labeling technique which can facilitate the metabolism in the liver after administration to patients without the reduction in the antibody function, thereby reducing accumulation of radionuclides in an organ such as the liver, and a modified antibody containing an IgG antibody and an IgG-binding peptide bound to the IgG antibody. The IgG-binding peptide has an amino acid sequence consisting of 13 to 17 amino acid residues, such as GPDCAYH(Xaa1)GELVWCTFH (SEQ ID NO: 2) wherein Xaa1 represents a lysine residue, a cysteine residue, an aspartic acid residue, a glutamic acid residue, 2-aminosuberic acid, or diaminopropionic acid, and a compound represented by the following formula (II-1) is linked at a position of the lysine residue via a modification linker to the N terminus of the IgG-binding peptide. ##STR00001##

Provided is an isolated CTLA4 monoclonal antibody. The antibody can highly-specifically bind to CTLA4, and can effectively block the binding of CTLA4 to B7, reduce the activity or expression level of CTLA4, relieve the inhibition of CTLA4 on the immune function of an organism, activate T lymphocytes, and effectively treat tumors and immune system diseases. Also provided are a monoclonal antibody conjugate comprising the pharmaceutical composition and diagnostic composition of the antibody, and the use thereof in the preparation of a drug for preventing and/or treating and/or treating in combination tumors and immune system diseases.

The invention relates to chemical compounds and complexes that can be used in therapeutic and diagnostic applications.

A pharmaceutical composition comprising a conjugate of a cytokine and a tumor targeting moiety (TTM) and a pharmaceutically acceptable excipient, wherein the cytokine is present in an amount which does not induce a negative feedback mechanism.

The invention relates to binding molecules that bind specifically to prostate specific membrane antigen (PSMA), in particular, single human variable heavy chain domain antibodies and related methods for treatment of cancer.

Site-specific modification of proteins with microbial transglutaminase (MTG) is a powerful and versatile strategy for a controlled modification of proteins under physiological conditions. Solid-phase microbead-immobilization is used to site-specifically and efficiently attach different functional molecules important for further downstream applications to proteins of therapeutic relevance including scFV, Fab-fragment and antibodies. MTG remained firmly immobilized with no detectable column bleeding and enzyme activity was sustained during continuous operation. Immobilized MTG shows enhanced selectivity towards a certain residue in the presence of several reactive residues which are all targeted when the conjugation was carried out in solution. The generation of dual site-specifically conjugated IgG1 with immobilized and MTG in solution is reported, i.e. site-specific conjugation to glutamine and lysine residues of IgG1 antibody. Site-specific glutamine conjugation with small peptides containing a lysine residue and a functional moiety is also described.

Disclosed herein are composite polypeptide. According to various embodiments, the composite polypeptide includes a parent polypeptide and a metal binding motif capable of forming a complex with a metal cation. The composite polypeptide may be conjugated with a linker unit having a plurality of functional elements to form a multi-functional molecular construct. Alternatively, multiple composite polypeptides may be conjugated to a linker unit to form a molecular construct, or a polypeptide bundle. Linker units suitable for conjugating with the composite polypeptide having the metal binding motif are also disclosed.

The present invention relates to dual-targeting lipid-polymer hybrid nanoparticles (T-hNPs) comprising a polymer core comprising a heme oxygenase 1 inhibitor and a lipid membrane (shell) comprising a targeting moiety, a kit for preparing the dual-targeting lipid-polymer hybrid nanoparticles, a pharmaceutical composition comprising the dual-targeting lipid-polymer hybrid nanoparticles as an active ingredient, and a method of preventing or treating cancer comprising administering the pharmaceutical composition to a subject in need thereof. Accordingly, the present invention can provide the dual-targeting lipid-polymer hybrid nanoparticles (T-hNPs) comprising a polymer core comprising a heme oxygenase 1 inhibitor and a lipid membrane (shell) comprising a targeting moiety, the kit for preparing the dual-targeting lipid-polymer hybrid nanoparticles (T-hNPs), the pharmaceutical composition comprising the dual-targeting lipid-polymer hybrid nanoparticles (T-hNPs) as an active ingredient, and the method of preventing or treating cancer comprising administering the pharmaceutical composition to a subject in need thereof.

Provided herein are antibodies which bind to latency-associated peptide (LAP) of TGF-β1 and are characterized by particular functional features, such as binding specifically to LAP-TGFβ1 on cells but not to LAP-TGFβ1 in extracellular matrix, as well as compositions including the same. Also provided are uses of these antibodies in therapeutic applications, such as in the treatment of cancer, and diagnostic applications.

The invention relates to binding molecules that bind specifically to prostate specific membrane antigen (PSMA), in particular, single human variable heavy chain domain antibodies and related methods for treatment of cancer.