IMPROVED METHODS FOR ENHANCING ANTIBODY PRODUCTIVITY IN MAMMALIAN CELL CULTURE AND MINIMIZING AGGREGATION DURING DOWNSTREAM, FORMULATION PROCESSES AND STABLE ANTIBODY FORMULATIONS OBTAINED THEREOF
First Claim
1. A method of manufacturing a pharmaceutical antigen binding protein with high yield and minimum aggregation, comprising:
- a) culturing large scale mammalian cells that express antigen binding protein in a cell culture production medium, wherein the method effectively maintains the cell count and results in a yield of least 2 gm/L;
b) purification of antigen binding protein from harvested supernatant obtained in step (a), wherein the method results in recovery of at least 80% and purity of at last 99%; and
c) obtaining a stable antigen binding protein formulation, wherein Osmolality of the stable formulation is in a range of 300-400 mOsm/Kg and viscosity of the stable formulation is less than 2.5 mPa-S.
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Abstract
The invention describes an efficient platform for antibody manufacturing and formulation that provides i) cell culture process with improved feeding strategy resulting in high antibody titer between 2 gm/L to 5 gm/L; ii) improved purification process showing optimal percentage recovery, high purity monomer content, minimum aggregation/particulate formation, minimum impurity levels; and iii) high concentration stable liquid formulation with optimal osmolality and low viscosity across different temperature excursions and devoid of aggregation. The preferred antibodies include IgG1 monoclonal antibody specific to the Dengue virus epitope in domain III of the E protein and IgG1 monoclonal antibody specific to the rabies virus surface G glycoprotein.
3 Citations
88 Claims
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1. A method of manufacturing a pharmaceutical antigen binding protein with high yield and minimum aggregation, comprising:
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a) culturing large scale mammalian cells that express antigen binding protein in a cell culture production medium, wherein the method effectively maintains the cell count and results in a yield of least 2 gm/L; b) purification of antigen binding protein from harvested supernatant obtained in step (a), wherein the method results in recovery of at least 80% and purity of at last 99%; and c) obtaining a stable antigen binding protein formulation, wherein Osmolality of the stable formulation is in a range of 300-400 mOsm/Kg and viscosity of the stable formulation is less than 2.5 mPa-S. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 11, 12, 13, 14, 15, 16, 18, 19, 20, 21, 22, 23, 25, 26, 28, 30, 31, 32, 33, 35, 36, 50, 53, 54, 55)
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9-10. -10. (canceled)
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37-49. -49. (canceled)
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51-52. -52. (canceled)
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57-68. -68. (canceled)
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69. A pharmaceutical formulation comprising
a. 1-100 mg/ml of at least one antigen binding protein; -
b. 20-40 mM of Histidine; c. 50-100 mM of Arginine; d. 0.002-0.02% of Polysorbate 80 (w/v); e. 50-150 mM NaCl; and f. not more than 2.5% Sucrose w/v;
wherein pH of the formulation is 6.5±
0.5;wherein the Osmolality of the formulation is 300-450 mOsmol/kg and viscosity is less than 2.5 mPa-S and said formulation is stable at 2-8 deg C. for at least 9 months, at 25 deg C. for at least 1 month, at 40 deg C. for at least 40 days, and at 50 deg C. for at least 2 days. - View Dependent Claims (70, 75, 76, 77, 78, 79, 80, 81, 82, 83, 84, 87)
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71-74. -74. (canceled)
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85-86. -86. (canceled)
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88-89. -89. (canceled)
Specification