Methods to modulate lysine variant distribution
View Patent ↗The instant invention relates to the field of protein production and purification, and in particular to compositions and processes for controlling the distribution or amount of lysine variants expressed by host cells, as well as to compositions and processes for controlling the amount of lysine variants present in purified preparations.
1. A method for producing a composition comprising adalimumab, comprising culturing a cell producing adalimumab in a cell culture media comprising an amount of one or more basic amino acids sufficient to produce a composition comprising adalimumab in which less than 62% of the lysine variant species of adalimumab have zero C-terminal lysines (Lys 0).
2. The method of claim 1 , wherein the one or more basic amino acids in the cell culture media is selected from the group consisting of arginine, lysine, histidine, ornithine and combinations thereof.
3. The method of claim 2 , wherein the one or more basic amino acids in the cell culture media is ornithine.
4. The method of claim 2 , wherein the one or more basic amino acids in the cell culture media is lysine.
5. The method of claim 4 , wherein the lysine concentration in the cell culture media is 4 to 10 g/L.
6. The method of claim 2 , wherein the one or more basic amino acids in the cell culture media is histidine.
7. The method of claim 1 , wherein 61% or less of the lysine variant species have zero C-terminal lysines (Lys 0).
8. The method of claim 1 , wherein 60% or less of the lysine variant species have zero C-terminal lysines (Lys 0).
9. The method of claim 1 , wherein 58% or less of the lysine variant species have zero C-terminal lysines (Lys 0).
10. The method of claim 1 , wherein 55% or less of the lysine variant species have zero C-terminal lysines (Lys 0).
11. The method of claim 1 , wherein 48% or less of the lysine variant species have zero C-terminal lysines (Lys 0).
12. The method of claim 2 , wherein the one or more basic amino acids in the cell culture media is arginine.
13. The method of claim 12 , wherein the arginine concentration in the cell culture media is 6 to 9 g/L.
14. The method of claim 6 , wherein the histidine concentration in the cell culture media is 8 g/L or more.
15. The method of claim 12 , wherein the arginine concentration in the cell culture media is 6 g/L or more.
16. The method of claim 12 , wherein the arginine concentration in the cell culture media is 8 g/L or more.
17. The method of claim 12 , wherein the arginine concentration in the cell culture media is 9 g/L or more.
18. The method of claim 4 , wherein the lysine concentration in the cell culture media is 4 g/L or more.
19. The method of claim 4 , wherein the lysine concentration in the cell culture media is 8 g/L or more.
20. The method of claim 4 , wherein the lysine concentration in the cell culture media is 10 g/L or more.
21. A method for producing a composition comprising adalimumab, comprising culturing a cell producing adalimumab in a cell culture media comprising an amount of lysine sufficient to produce a composition comprising adalimumab in which less than 62% of the lysine variant species of adalimumab have zero C-terminal lysines (Lys 0).
22. The method of claim 21 , wherein the lysine concentration in the cell culture media is 4 to 10 g/L.
23. The method of claim 21 , wherein the lysine concentration in the cell culture media is 4 g/L or more.
24. The method of claim 21 , wherein the lysine concentration in the cell culture media is 8 g/L or more.
25. The method of claim 21 , wherein the lysine concentration in the cell culture media is 10 g/L or more.
26. The method of claim 21 , wherein 61% or less of the lysine variant species have zero C-terminal lysines (Lys 0).
27. The method of claim 21 , wherein 55% or less of the lysine variant species have zero C-terminal lysines (Lys 0).
28. The method of claim 21 , wherein 48% or less of the lysine variant species have zero C-terminal lysines (Lys 0).
29. A method for producing a composition comprising adalimumab, comprising culturing a cell producing adalimumab in a cell culture media comprising an amount of one or more basic amino acids sufficient to produce a composition comprising adalimumab wherein the sum of lysine variant species of adalimumab having one C-terminal lysine (Lys 1) and lysine variant species of adalimumab having two C-terminal lysines (Lys 2) is greater than 35%.
30. The method of claim 29 , wherein the one or more basic amino acids in the cell culture media is selected from the group consisting of arginine, lysine, histidine, ornithine and combinations thereof.