Yuseong gu, South Korea
Yuseong gu, South Korea

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The present invention relates to an antibody in which a motif composed of an amino acid or peptide sequence including one or more cysteine residues is bound to the terminus of a parent antibody, particularly the terminus of the heavy chain of the parent antibody. Also, the present invention relates to a modified antibody-drug conjugate (mADC) comprising a drug bound to the antibody, and a method for producing the antibody or the modified antibody-drug conjugate. The modified antibody-drug conjugate according to the invention can accurately deliver the drug to a target cell due its high specificity to antigen, and thus can increase the therapeutic effect of the drug. Also, it can increase the usability of drugs, particularly anticancer drugs, the use of which is restricted due to their toxicity, despite their high efficacy. Moreover, the invention relates to a composition for treatment of diseases, particularly cancers, which comprise the modified antibody-drug conjugate.


Patent
CJ Healthcare Corporation and Alteogen Inc | Date: 2015-04-08

The present invention relates to a long-acting human growth hormone NexP-hGH protein which is highly glycosylated and highly long acting in vivo, and relates to a production method for same. More specifically, the present invention relates to a specific isoform of long-acting human growth hormone NexP-hGH protein in which human growth hormone is fused with a highly glycosylated alpha-1 antitrypsin mutant whereby long-acting properties in vivo are increased, and relates to a production method for same. Insofar as the sustained human growth hormone production method is concerned, the present invention also relates to a high-purity purification method for NexP-hGH, the method specifically comprising the steps of: (a) carrying out anion-exchange resin chromatography on a biological emulsion comprising NexP-hGH which is a long-acting human growth hormone in which human growth hormone is fused with an alpha-1 antitrypsin mutant; (b) carrying out hydrophobic resin chromatography on the biological emulsion comprising NexP-hGH, or on the eluate produced in step (a); and (c) carrying out affinity chromatography, entailing packing with a resin to which anti-alpha-1 antitrypsin antibody fragments are attached, on the biological emulsion comprising NexP-hGH which is a long-acting human growth hormone, and on the eluate produced in step (a) or step (b).


Patent
Cj Healthcare Corporation and Alteogen Inc. | Date: 2013-06-05

The present invention relates to a long-acting human growth hormone NexP-hGH protein and its production method. More specifically, it relates to a specific isoform of long-acting human growth hormone NexP-hGH protein in which human growth hormone is fused with a highly glycosylated alpha-1 antitrypsin mutant whereby long-acting properties in vivo are increased. The present invention also relates to a high-purity purification method for NexP-hGH, which includes the steps of: (a) carrying out anion-exchange resin chromatography on a biological emulsion comprising NexP-hGH in which human growth hormone is fused with an alpha-1 antitrypsin mutant; (b) carrying out hydrophobic resin chromatography on the biological emulsion comprising NexP-hGH, or on the eluate produced in step (a); and (c) carrying out affinity chromatography, entailing packing with a resin to which anti-alpha-1 antitrypsin antibody fragments are attached, on the biological emulsion comprising NexP-hGH and on the eluate produced in step (a) or step (b).


A novel alpha-1 antitrypsin variant, a method of preparing the same, and use thereof are provided. The alpha-1 antitrypsin variant has excellent stability in the body and maintains an inhibitory effect on elastase activities because the blood half-life (t_(1/2)) and the area under blood drug concentration vs. time curve (AUC) are remarkably increased by adding an N-glycosylation site in animal cells through amino acid mutation between 1^(st) and 25^(th) positions of the N-terminus of alpha-1 antitrypsin. Therefore, the alpha-1 antitrypsin variant can be useful in preventing or treating alpha-1 antitrypsin deficiency.


The present invention relates to an antibody in which a motif composed of an amino acid or peptide sequence including one or more cysteine residues is bound to the terminus of a parent antibody, particularly the terminus of the heavy chain of the parent antibody. Also, the present invention relates to a modified antibody-drug conjugate (mADC) comprising a drug bound to the antibody, and a method for producing the antibody or the modified antibody-drug conjugate. The modified antibody-drug conjugate according to the invention can accurately deliver the drug to a target cell due its high specificity to antigen, and thus can increase the therapeutic effect of the drug. Also, it can increase the usability of drugs, particularly anticancer drugs, the use of which is restricted due to their toxicity, despite their high efficacy. Moreover, the invention relates to a composition for treatment of diseases, particularly cancers, which comprise the modified antibody-drug conjugate.


The present invention relates to a composition for stabilizing a fusion protein of a physiologically active protein and an Fc domain, and more particularly to a method of stabilizing a fusion protein of a protein and an Fc domain using a composition containing an ammonium salt or a combination of an ammonium salt and succinate. The composition containing an ammonium salt or a combination of an ammonium salt and succinate according to the present invention can effectively inhibit the aggregation of the protein-Fc domain fusion protein, and thus enables the fusion protein to be stored for a long period of time. Accordingly, the composition can be widely used in the medical field that uses the protein-Fc domain fusion protein.


The present invention relates to an antibody in which a motif composed of an amino acid or peptide sequence including one or more cysteine residues is bound to the terminus of a parent antibody, particularly the terminus of the heavy chain of the parent antibody. Also, the present invention relates to a modified antibody-drug conjugate (mADC) comprising a drug bound to the antibody, and a method for producing the antibody or the modified antibody-drug conjugate. The modified antibody-drug conjugate according to the invention can accurately deliver the drug to a target cell due its high specificity to antigen, and thus can increase the therapeutic effect of the drug. Also, it can increase the usability of drugs, particularly anticancer drugs, the use of which is restricted due to their toxicity, despite their high efficacy. Moreover, the invention relates to a composition for treatment of diseases, particularly cancers, which comprise the modified antibody-drug conjugate.


Patent
Alteogen Inc. | Date: 2016-06-23

A stable liquid formulation includes a fusion protein having an Fc domain of a human immunoglobulin G (IgG), in particular, a protein in which an Fc domain of a human immunoglobulin G (IgG) and a soluble extracellular domain of a vascular endothelial growth factor (VEGF) receptor are fused (e.g., aflibercept)). A composition for stabilizing a protein and a method for stabilizing a protein in which an Fc domain of an IgG and a soluble extracellular domain of a VEGF receptor are fused are disclosed. The present invention improves therapeutic effects on various ophthalmic diseases (e.g., retinal vein occlusion, diabetic macular edema, choroidal neovascularization and wet age-related macular degeneration, etc.) caused by abnormal angiogenesis, while pursuing stabilization of bioactivity through a stable liquid formulation suitable for intravitreal injection of an anti-VEGF-Fc fusion protein including aflibercept.


The present invention relates to a composition for stabilizing a fusion protein of a physiologically active protein and an Fc domain, and more particularly to a method of stabilizing a fusion protein of a protein and an Fc domain using a composition containing an ammonium salt or a combination of an ammonium salt and succinate. The composition containing an ammonium salt or a combination of an ammonium salt and succinate according to the present invention can effectively inhibit the aggregation of the protein-Fc domain fusion protein, and thus enables the fusion protein to be stored for a long period of time. Accordingly, the composition can be widely used in the medical field that uses the protein-Fc domain fusion protein.


The present invention relates to a composition for stabilizing TNF-binding protein exhibiting physiological activity, and more specifically, to a composition for stabilizing protein including basic amino acid and sugar and/or ammonium salt, a pharmaceutical formulation including the same, and a method for stabilizing TNF-binding protein. The formulation including basic amino acid; and sugar and/or ammonium salt according to the present invention effectively inhibits aggregation, denaturation and oxidation of TNF-binding protein used for treating various diseases, for example, an anti-TNF-alpha antibody, such that the protein is capable of being preserved and stored for a long time, which is widely usable and effective in a medical field using TNF-binding protein, for example, an anti-TNF-alpha antibody.

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