An antibody having a higher function targeting a CD73 antigen, and more specifically, an antibody for cancer treatment having a higher activity. The antibody or a human-type antibody derivative that has a binding activity to a CD73 antigen and activates T cells having a toxic activity to cancer cells, and includes complementarity determining regions of any combination of heavy and light chains each having a specific amino acid sequence.

The present disclosure relates to an antibody or an antigen-binding fragment thereof specifically binding to GRP94, and uses thereof. A GRP94 antibody or antigen-binding fragment thereof according to the present disclosure has very high specificity and affinity to GRP94, and excellent growth-inhibiting, infiltration-inhibiting, and angiogenesis-inhibiting effects on colorectal cancer cell lines, and thus can be useful as a composition for treating cancer, inhibiting cancer metastasis, and inhibiting angiogenesis.

An objective of the present invention is to provide methods for facilitating antigen-binding molecule-mediated antigen uptake into cells, methods for facilitating the reduction of antigen concentration in plasma, methods for increasing the number of antigens to which a single antigen-binding molecule can bind, methods for improving pharmacokinetics of antigen-binding molecules, antigen-binding molecules improved for facilitated antigen uptake into cells, antigen-binding molecules capable of facilitating the reduction of antigen concentration in plasma, antigen-binding molecules capable of repeatedly binding to antigens, antigen-binding molecules with improved pharmacokinetics, pharmaceutical compositions comprising such an antigen-binding molecule, and methods for producing those described above.

The present inventors discovered that antigen uptake into cells is facilitated by an antibody having human FcRn-binding activity at the plasma pH and a lower antigen-binding activity at the early endosomal pH than at the plasma pH; such antibodies can increase the number of antigens to which a single antibody molecule can bind; the reduction of antigen in plasma can be facilitated by administering such an antibody; and antibody pharmacokinetics can be improved by using such antibodies.

The current disclosure provides binding polypeptides (e.g., antibodies), and targeting moiety conjugates thereof, comprising a site-specifically engineered glycan linkage within native or engineered glycans of the binding polypeptide. The current disclosure also provides nucleic acids encoding the antigen-binding polypeptides, recombinant expression vectors and host cells for making such antigen-binding polypeptides. Methods of using the antigen-binding polypeptides disclosed herein to treat disease are also provided.

The present invention relates to antigen-binding molecules, preferably antibodies or antigen-binding fragments thereof, that specifically bind to a GP73, or to an antigenic portion thereof, wherein the antigen-binding molecule binds to an epitope within the extracellular part of GP73 that is internalized into a cell usually subsequent to proteolytic cleavage. The invention further relates to immunoconjugates comprising the antigen-binding molecules, in particular the anti-GP73 antibodies, or antigen-binding fragments thereof. The antigen-binding molecules and immunoconjugates of the invention may be administered alone, as a therapeutic conjugate or in combination with other naked antibodies, or with therapeutic agents, or with other immunoconjugates or as a diagnostic conjugate. The present invention also relates to nucleotide sequences encoding anti GP73 antibodies, and immunoconjugates, vectors and host cells containing the nucleotide sequences, and methods of making anti-GP73-antibodies. The antigen-binding molecules, antibodies and compositions of the invention are useful in diagnostic and therapeutic applications for diseases in which expression of GP73 is altered, in particular in which GP73 is overexpressed, such as cancer.

The present invention relates to an antigen-binding protein, or an antigen-binding fragment thereof, comprising (i) a heavy chain variable domain comprising a VHCDR1 having the amino acid sequence GYSITSGYSWH; a VHCDR2 having the amino acid sequence YIHYSGSTKYNPSLKS and a VHCDR3 having the amino acid sequence GSNYGFDY; and (ii) a light chain variable domain comprising a VLCDR1 having the amino acid sequence KSSQSLLYSNDQKNYLA, a VLCDR2 having the amino acid sequence WASIRES, and a VLCDR3 having the amino acid sequence QQYYIYPLT. The present invention also relates to an antigen-binding protein, or an antigen-binding fragment thereof, comprising (i) a heavy chain variable domain comprising a VHCDR1 having the amino acid sequence VYSITSGYSWH; a VHCDR2 having the amino acid sequence YIHYSGSTKYNPSLKS, and a VHCDR3 having the amino acid sequence GTDNAVDY; and (ii) a light chain variable domain comprising a VLCDR1 having the amino acid sequence KSSQSLLYSSNQKNYLA, a VLCDR2 having the amino acid sequence WAS SRES, and a VLCDR3 having the amino acid sequence QQYYIYPLT. Compositions comprising the antigen-binding protein, or antigen-binding fragment thereof, methods of use of the antigen-binding protein, or antigen-binding fragment thereof and kits comprising the antigen-binding protein, or antigen-binding fragment thereof are also provided.

The present invention relates to dimers comprising a first polypeptide and a second polypeptide, wherein each of said first and second polypeptide comprises at least one immunoglobulin single variable domain (ISVD) and a C-terminal extension comprising a cysteine moiety (preferably at the C-terminus), wherein said first polypeptide and said second polypeptide are covalently linked via a disulfide bond between the cysteine moiety of said first polypeptide and the cysteine moiety of said second polypeptide, in which the dimer outperformed the benchmark constructs, e.g. cognate multivalent and multispecific constructs, in various assays. The present invention provides methods for making the dimers of the invention.

The present invention generally relates to antibodies that bind to GPRC5D, including bispecific antigen binding molecules e.g. for activating T cells. In addition, the present invention relates to polynucleotides encoding such antibodies, and vectors and host cells comprising such polynucleotides. The invention further relates to methods for producing the antibodies, and to methods of using them in the treatment of disease.

Antibodies, antigen-binding fragments, and conjugates (e.g., antibody-drug conjugates such as those comprising eribulin) thereof that bind to mesothelin are disclosed. The disclosure further relates to methods and compositions for use in the treatment of cancer by administering the compositions provided herein.

Provided are an anti-B7-H3 antibody and preparation thereof and a use thereof. Further provided is a drug conjugate and recombinant protein containing the antibody. The antibody of the present invention can be effectively endocytosed by cells, and an antibody-conjugated drug prepared by using the antibody of the present invention shows a tumor inhibition effect.