Abstract: Provided is an anti-B7-H3 antibody specifically recognizing a B7-H3, which can be usefully as a cancer therapeutic agent, as having an inhibitory activity of an immune checkpoint which induces antibody-dependent cell-mediated cytotoxicity and T cell activation inhibited by B7-H3. In particular, the antibody having the inhibitory activity of an immune checkpoint can be used in combination with other immunoantibody therapeutic agents. In addition, it can be usefully used for cancer targeting treatment including detection of various cancers expressing B7-H3 through specific binding to B7-H3, and drug delivery to specific cancer, etc.

Abstract: The present disclosure relates to a bispecific antibody that specifically binds to alpha-synuclein and IGF1R, and an use of the bispecific antibody for the prevention, treatment and / or diagnosis of synucleinopatheis associated with alpha-synuclein or alpha-synuclein aggregates, and can allow the alpha-synuclein antibody or an antigen-binding fragment thereof to penetrate the blood brain barrier to exert its action in the brain, and extend the half-life to maintain the efficacy for a long time.

Abstract: The present invention relates to new antibody-drug conjugates (ADCs) targeting ROR1, active metabolites of such ADCs, methods for preparation of such ADCs, uses for such ADCs in treatment and/or prevention of illnesses, and uses for such ADCs in production of drugs for treatment and/or prevention of diseases, more specifically diseases associated with over-expression of ROR1, for example cancer. More specifically, the present invention relates to an antibody-drug conjugate comprising an antibody that binds to ROR1 or an antigen-binding fragment thereof, and a pharmaceutical composition comprising the same.

Abstract: Provided is a method of purifying a mixture of Fc-containing bioactive peptides by using an affinity column including an affinity matrix containing a protein A ligand, wherein the mixture of Fc-containing bioactive peptides includes a first Fc-containing bioactive peptide and a second Fc-containing bioactive peptide, and the second Fc-containing bioactive peptide includes at least one more human VH3 domain, compared to the first Fc-containing bioactive peptide. According to the purification method, bioactive peptides having the same or similar structures can be precisely separated to the high level of purity while simplification of the process is achieved.

Abstract: The present disclosure provides an anti-PD-L1/anti-LAG3 bispecific antibody capable to effectively block the interactions between PD-L1 and its receptor PD-1 and between LAG3 and its ligand (e.g., a MHC class II molecule and FGL1). The bispecific antibody may have high binding affinity to both of a PD-L1 protein (e.g., a human PD-L1 protein) and a LAG3 protein (e.g., a human LAG3 protein). Also provided are antibodies and fragments that have specificity to the PD-L1 or LAG3 protein alone, or antibodies and fragments having additional specificity to one or more other antigens.

Abstract: Provided are bispecific and multi-specific antibodies that target both claudin 18.2 (CLDN18.2) and 4-1BB. These antibodies, in the absence of CLDN18.2-expressing cells, can bind to 4-1BB but are unable to activate 4-1BB signaling. In the presence of CLDN18.2-expressing cells, however, these antibodies can trigger CLDN18.2-dependent 4-1BB signaling, leading to potent immune response to the CLDN18.2-expressing tumor cells.

Abstract: The present disclosure provides an anti-PD-L1/anti-4-1BB bispecific antibody capable to effectively block the interactions between PD-L1 and its receptor PD-1 and between 4-1BB and its ligand. The bispecific antibody may have high binding affinity to both of a PD-L1 protein and a 4-1BB protein.