Claims for Patent: 10,487,128

Summary for Patent: 10,487,128

Title:	Conjugate of biologically active polypeptide monomer and immunoglobulin Fc fragment with reduced receptor-mediated clearance, and the method for preparing the same
Abstract:	Provided is a long-acting pharmaceutical composition containing a conjugate comprising a physiologically active polypeptide linked to an immunoglobulin Fc fragment, wherein the composition contains a monomeric conjugate comprising one molecule of the physiologically active polypeptide linked to a single immunoglobulin Fc fragment, and optionally contains a multimeric conjugate comprising two or more molecules of the same physiologically active polypeptide linked to a single immunoglobulin Fc fragment, provided that the molar ratio of the monomeric conjugate to the multimeric conjugate in the composition is at least 19; a physiologically active polypeptide monomer-immunoglobulin Fc fragment conjugate that comprises a physiologically active polypeptide monomer linked via a non-peptidyl linker to an immunoglobulin Fc fragment, wherein the physiologically active polypeptide is linked via the non-peptidyl linker to the immunoglobulin Fc fragment in a monomeric form.
Inventor(s):	Park; Sung Hee (Seongnam-si, KR), Kim; Min Young (Anseong-si, KR), Lim; Hyung Kyu (Hwaseong-si, KR), Bae; Sung Min (Seongnam-si, KR), Jung; Sung Youb (Suwon-si, KR), Kwon; Se Chang (Seoul, KR)
Assignee:	HANMI PHARM. CO., LTD (Hwaseong-Si, KR)
Application Number:	14/904,254
Patent Claims:	1. A long-acting pharmaceutical composition, comprising a conjugate comprising a physiologically active polypeptide linked to an immunoglobulin Fc fragment, wherein the composition comprises a monomeric conjugate comprising one molecule of the physiologically active polypeptide linked to one immunoglobulin Fc chain of a single immunoglobulin Fc fragment having two immunoglobulin Fc chains, and a multimeric conjugate comprising two or more molecules of the same physiologically active polypeptide linked to a single immunoglobulin Fc fragment having two immunoglobulin Fc chains, provided that the molar ratio of the monomeric conjugate to the multimeric conjugate in the composition is at least 19; wherein each of the two immunoglobulin Fc chains in the multimeric conjugate is linked to one or more molecules of the physiologically active polypeptide; wherein the monomeric conjugate shows reduced receptor-mediated internalization or receptor-mediated clearance compared to either a dimeric conjugate comprising two molecules of the physiologically active polypeptide linked via a non-peptidyl linker to a single immunoglobulin Fc fragment, or a conjugate comprising a physiologically active polypeptide dimer linked in-frame to the immunoglobulin Fc fragment; and wherein the physiologically active polypeptide is selected from the group consisting of glucagon-like peptide-1 (GLP-1), glucagon, oxyntomodulin, insulin, growth hormone releasing hormone, growth hormone releasing peptide, interferon receptors, interleukins, interleukin receptors, macrophage activating factor, macrophage peptide, B cell factor, T cell factor, protein A, cell necrosis glycoproteins, lymphotoxin, tumor necrosis factor, alpha-1 antitrypsin, albumin, .alpha.-lactalbumin, apolipoprotein-E, angiopoietins, hemoglobin, thrombin, thrombin receptor activating peptide, thrombomodulin, blood factors VII, VIIa, VIII, IX and XIII, plasminogen activating factor, urokinase, streptokinase, hirudin, protein C, C-reactive protein, superoxide dismutase, leptin, platelet-derived growth factor, epithelial growth factor, epidermal growth factor, angiostatin, angiotensin, alcitonin, atriopeptin, elcatonin, connective tissue activating factor, tissue factor pathway inhibitor, follicle stimulating hormone, luteinizing hormone, luteinizing hormone releasing hormone, nerve growth factors, parathyroid hormone, relaxin, secretin, somatomedin, insulin-like growth factor, cholecystokinin, pancreatic polypeptide, gastrin releasing peptide, corticotropin releasing factor, thyroid stimulating hormone, autotaxin, lactoferrin, and myostatin. 2. The long-acting pharmaceutical composition of claim 1, wherein the conjugate further comprises a non-peptidyl linker interposed between the physiologically active polypeptide and the immunoglobulin Fc frgagment to link the physiological active polypeptide to the immunoglobulin Fc fragment. 3. The long-acting pharmaceutical composition of claim 2, wherein the non-peptidyl linker is selected from the group consisting of polyethylene glycol, polypropylene glycol, an ethylene glycol-propylene glycol copolymer, polyoxyethylated polyol, polyvinyl alcohol, polysaccharide, dextran, polyvinyl ethyl ether, a biodegradable polymer, a lipid polymer, chitin, hyaluronic acid, and combinations thereof. 4. The long-acting pharmaceutical composition of claim 2, wherein the non-peptidyl linker has a molecular weight ranging from 1 to 100 kDa. 5. The long-acting pharmaceutical composition of claim 1, wherein the physiologically active polypeptide is selected from the group consisting of glucagon-like peptide-1 (GLP-1), glucagon, oxyntomodulin, insulin, and derivatives thereof. 6. The long-acting pharmaceutical composition of claim 1, wherein the immunoglobulin Fc fragment is composed of 1 to 4 domains selected from the group consisting of CH1, CH2, CH3 and CH4 domains. 7. The long-acting pharmaceutical composition of claim 1, wherein the immunoglobulin Fc fragment further comprises a hinge region. 8. The long-acting pharmaceutical composition of claim 1, wherein the immunoglobulin Fc fragment is an Fc fragment derived from one selected from the group consisting of IgG, IgA, IgD, IgE, IgM, combinations thereof and hybrids thereof. 9. The long-acting pharmaceutical composition of claim 1, wherein the immunoglobulin Fc fragment is an IgG4 Fc fragment. 10. The long-acting pharmaceutical composition of claim 1, wherein the immunoglobulin Fc fragment is non-glycosylated. 11. A method for preparing the long-acting pharmaceutical composition of claim 1, comprising: (a) linking a physiologically active polypeptide to an immunoglobulin Fc fragment having two immunoglobulin Fc chains to prepare a mixture of physiologically active polypeptide-immunoglobulin Fc fragment conjugates; and (b) separating from the mixture a physiologically active polypeptide monomer-immunoglobulin Fc fragment conjugate comprising one molecule of the physiologically active polypeptide linked to one immunoglobulin Fc chain of a single immunoglobulin Fc fragment having two immunoglobulin Fc chains. 12. The method of claim 11, wherein the physiologically active polypeptide and the immunoglobulin Fc fragment are linked to each other via a non-peptidyl linker. 13. The method of claim 11, wherein the conjugate of the long-acting pharmaceutical composition, which comprises one molecule of the physiologically active polypeptide linked to one immunoglobulin Fc chain of a single immunoglobulin Fc fragment having two immunoglobulin Fc chains, shows reduced receptor-mediated internalization or receptor-mediated clearance compared to either a dimeric conjugate comprising two molecules of the physiologically active polypeptide linked via the non-peptidyl linker to a single immunoglobulin Fc fragment having two immunoglobulin Fc chains, or a physiologically active polypeptide dimer linked in-frame to the immunoglobulin Fc fragment.

Details for Patent 10,487,128

Applicant	Tradename	Biologic Ingredient	Dosage Form	BLA	Approval Date	Patent No.	Expiredate
Microbix Biosystems Inc.	KINLYTIC	urokinase	For Injection	021846	01/16/1978		2033-07-12
Nps Pharmaceuticals, Inc.	NATPARA	parathyroid hormone	For Injection	125511	01/23/2015		2033-07-12