Methods and compositions with reduced opalescence
First Claim
Patent Images
1. A method for decreasing the opalescence of an antibody preparation, the method comprising:
- (a) determining a second virial coefficient of an antibody in the antibody preparation; and
(b) if the second virial coefficient of the antibody is negative, reducing the ionic strength of the antibody preparation such that the opalescence of the antibody preparation is reduced.
1 Assignment
0 Petitions
Accused Products
Abstract
Methods for reducing the opalescent appearance of a protein preparation by modifying the ionic strength of the preparation, as well as compositions, e.g., pharmaceutical compositions, of concentrated protein with decreased opalescence are disclosed. Purification methods which monitor and/or reduce the salt concentrations at selected steps are also disclosed.
59 Citations
40 Claims
-
1. A method for decreasing the opalescence of an antibody preparation, the method comprising:
-
(a) determining a second virial coefficient of an antibody in the antibody preparation; and (b) if the second virial coefficient of the antibody is negative, reducing the ionic strength of the antibody preparation such that the opalescence of the antibody preparation is reduced. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
-
-
20. A method for reducing the formation of high molecular weight species in an antibody preparation, the method comprising:
-
(a) providing an antibody preparation comprising an antibody determined to have a negative second virial coefficient; (b) reducing the ionic strength of the antibody preparation such that the high molecular weight species in the antibody preparation are reduced. - View Dependent Claims (21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37)
-
-
38. A method of decreasing the formation of high molecular weight species in an antibody preparation, the method comprising:
-
(a) providing an antibody preparation comprising an antibody determined to have a negative second virial coefficient in 100 mM sodium chloride solution; (b) reducing the ionic strength in the antibody preparation such that the formation of high molecular weight species in the antibody preparation is reduced.
-
-
39. A method of improving the efficiency of a purification process of an antibody in an antibody preparation, the method comprising:
-
evaluating whether the antibody in the antibody preparation has a negative second virial coefficient at one or more salt concentrations; reducing the ionic strength in the antibody preparation, such that the high molecular weight species in the antibody preparation is reduced, thereby improving the efficiency of a purification process of an antibody preparation. - View Dependent Claims (40)
-
Specification