Macromolecule for delivering protein, polypeptide or peptide drugs and a production method for the same, and a slow release composition for protein, polypeptide or peptide drugs and a production method for the same

1. A sustained release microparticle composition of protein, polypeptide or peptide drug, consisting of:

i) a protein, polypeptide or peptide as an active ingredient, and

ii) a complex of a water-soluble ionic polymer of the following chemical formula 6 having a number average molecular weight of 1,000 to 4,000 daltons with a multivalent metal ion, as a drug delivery carrier;

wherein

X and X′ are independently hydrogen, alkyl or aryl,

m and n are independently an integer of 0 to 95, provided that 5<m+n<100,

a and b are independently an integer of 1 to 6,

R is unsubstituted or substituted —(CH 2 ) k — where k is an integer of 0 to 10, a divalent alkenyl having 2 to 10 carbon atoms, a divalent aryl having 6 to 20 carbon atoms, or a combination thereof;

wherein said active ingredient is entrapped within the complex.

2. The sustained release microparticle composition according to claim 1 , which contains said active ingredient in an amount of 0.01 to 60 wt %, based on the dry weight of the composition.

3. The sustained release microparticle composition according to claim 1 , which contains said drug delivery carrier in an amount of 39.9 to 99.9 wt %, based on the dry weight of the composition.

4. The sustained release microparticle composition according to claim 1 , wherein said active ingredient is growth hormone, erythropoietin, monoclonal antibody, granulocyte colony stimulating factor, macrophage colony stimulating factor, granulocyte-macrophage colony stimulating factor, thrombopoietin, insulin-like growth factor, epithelial growth factor, platelet-derived growth factor, fibroblast growth factor, transforming growth factor, interferon, interleukin, tumor necrosis factor, streptokinase, urokinase, staphylokinase, DNAse, glucocerebrosidase, alpha galactosidase, exenatide, octreotide, insulin, glucagon, luteinizing hormone releasing hormone, goserelin, leuprorelin, follicle stimulating factor, thyroid stimulating hormone, fertirelin, calcitonin, corticotropin releasing factor, brain natriuretic peptide, thymopentin, corticotropin, elcatonin, beta amyloid, triptorelin, buserelin, thymosin, somatostatin, alarelin, angiotensin, argipressin, atosiban, bivalirudin, cetrorelix, deslorelin, desmopressin, elcatonin, enfuvirtide, eptifibatide, GLP-1, gonandorelin, lyspressin, nafarelin, nesiritide, oxytocin, pramlintide, secretin, teriparatide, terlipressin, tetracosactide, vapreotide, or a mixture thereof.

5. A sustained release microparticle composition of protein, polypeptide or peptide drug, consisting of:

i) a protein, polypeptide or peptide as an active ingredient;

ii) a complex of a water-soluble ionic polymer of the following chemical formula 6 having a number average molecular weight of 1,000 to 4,000 daltons with a multivalent metal ion, as a drug delivery carrier:

wherein

X and X′ are independently hydrogen, alkyl or aryl,

m and n are independently an integer of 0 to 95, provided that 5<m+n<100,

a and b are independently an integer of 1 to 6,

R is unsubstituted or substituted —(CH 2 ) k — where k is an integer of 0 to 10, a divalent alkenyl having 2 to 10 carbon atoms, a divalent aryl having 6 to 20 carbon atoms, or a combination thereof; and

iii) a lyophilizing adjuvant,

wherein said active ingredient is entrapped within the complex.