Production of biosimilar ustekinumab in CHO cells
The present invention relates to a method for producing an ustekinumab antibody in CHO cells. It further relates to the use of the produced antibody in the treatment of plaque psoriasis, psoriatic arthritis and inflammatory bowel disease.
1 . A method of producing a recombinant ustekinumab antibody comprising the heavy chain and the light chain of ustekinumab, wherein the heavy chain and the light chain together form the recombinant ustekinumab antibody, the method comprising,
a) culturing Chinese Hamster Ovary (CHO) host cells, genetically modified to express the heavy chain and the light chain of ustekinumab, in a suitable culture medium under conditions that allow the cells to express the heavy chain and the light chain and to form the recombinant ustekinumab antibody,
b) harvesting the recombinant ustekinumab antibody from the host cell culture to obtain a recombinant ustekinumab antibody preparation, and
c) purifying the recombinant ustekinumab antibody preparation obtained from harvesting by one or more purification step(s),
wherein the recombinant ustekinumab antibody is a biosimilar of the ustekinumab reference product, wherein the ustekinumab reference product is produced in murine myeloma cells.
2 . The method of claim 1 , wherein the heavy chain of the recombinant ustekinumab has the sequence according to SEQ ID No. 1 and the light chain of the ustekinumab has the sequence according to SEQ ID No. 2.
3 . The method of claim 1 , wherein the ustekinumab reference product comprises a heavy chain according to SEQ ID No. 1 and a light chain according to SEQ ID No. 2.
4 . The method of claim 1 , wherein the CHO host cells are CHO-Kl cells or cells derived therefrom.
5 . The method of claim 1 , wherein the recombinant ustekinumab antibody is produced in large scale.
6 . The method of claim 1 , comprising combining the recombinant ustekinumab antibody from the recombinant ustekinumab antibody preparation one or more pharmaceutically acceptable excipient(s) to obtain a recombinant ustekinumab antibody drug product.
7 . The method of claim 6 , wherein the one or more pharmaceutically acceptable excipient(s) is/are selected from the group consisting of sucrose, L-histidine, L-histidine monohydrochloride monohydrate and polysorbate 80.
8 . The method of claim 6 , wherein the one or more pharmaceutically acceptable excipient(s) is/are selected from the group consisting of sucrose, L-histidine, L-histidine monohydrochloride monohydrate, methionine, EDTA disodium salt dihydrate and polysorbate 80.
9 . The method of claim 7 , wherein the recombinant ustekinumab antibody drug product comprises 90 mg/mL recombinant ustekinumab antibody and one or more pharmaceutically acceptable excipient(s) selected from the group consisting of 76 mg/mL sucrose, 1 mg/mL L-histidine/L-histidine monohydrochloride monohydrate and 0.04 mg/mL polysorbate 80.
10 . The method of claim 8 , wherein the recombinant ustekinumab antibody drug product comprises 5 mg/mL recombinant ustekinumab antibody and one or more pharmaceutically acceptable excipient(s) selected from the group consisting of 85 mg/mL sucrose, 1.8 mg/mL L-histidine/L-histidine monohydrochloride monohydrate, 0.4 mg/mL methionine, 0.02 mg/mL EDTA disodium salt dihydrate and 0.4 mg/mL polysorbate 80.
11 . The method of claim 1 , comprising determining that the recombinant ustekinumab antibody in the recombinant ustekinumab antibody preparation obtained in step b) or c) meets one or more of the following criteria (i) to (ii):
(i) binding to IL-23 differs from that of the ustekinumab reference product by not more than 20% or,
(ii) binding to IL-12 differs from that of the ustekinumab reference product by not more than 20%.
12 . The method of claim 1 , comprising determining that the recombinant ustekinumab antibody in the recombinant ustekinumab antibody preparation obtained in step b) or c) meets one or more of the following criteria (iii) to (vi):
(iii) lower percentage of recombinant ustekinumab antibody molecules comprise c-terminal lysine,
(iv) higher percentage of sialic acid being N-acetylneuraminic acid, (v) lower percentage of sialic acid being N-glycolylneuraminic acid or,
(vi) lower content of afucosylated glycoforms, as compared to the ustekinumab reference product.
13 . The method of claim 1 , comprising determining that the recombinant ustekinumab antibody in the recombinant ustekinumab antibody preparation obtained in step b) or c) meets one or more of the following criteria (vii) to (x):
(vii) greater than 90% of the sialic acid being N-acetylneuraminic acid,
(viii) less than 10% of the sialic acid being N-glycolylneuraminic acid,
(ix) content of afucosylated glycoforms is less than 8% or,
(x) content of terminal a-galactose is less than or equal to 0.1%.
14 . The method of claim 11 , wherein the binding to IL-23, and/or IL-12 is determined by Enzyme linked immunosorbent assay (ELISA) or bio-layer interferometry.
15 . The method of claim 12 , wherein the recombinant ustekinumab antibody molecules comprising c-terminal lysine are measured by cation exchange chromatography (CEX).
16 . The method of claim 12 , wherein the N-acetylneuraminic acid and N-glycolylneuraminic acid are measured by hydrophilic interaction liquid chromatography-ultra performance liquid chromatography HILIC-UPLC.
17 . The method of claim 13 , wherein the N-acetylneuraminic acid, N-glycolylneuraminic acid afucosylated glycoforms, and a-galactose are measured by hydrophilic interaction liquid chromatography-ultra performance liquid chromatography HILIC-UPLC.
18 . A biosimilar recombinant ustekinumab antibody produced by the method of claim 1 .
19 . The biosimilar recombinant ustekinumab of claim 18 , wherein the biosimilar recombinant ustekinumab antibody meets one or more of the following criteria:
(i) binding to IL-23 differs from that of the ustekinumab reference product by not more than 20% or,
(ii) binding to IL-12 differs from that of the ustekinumab reference product by not more than 20%.
20 . The biosimilar recombinant ustekinumab antibody of claim 18 , wherein the biosimilar recombinant ustekinumab antibody meets one or more of the following criteria:
(iii) lower percentage of recombinant ustekinumab antibody molecules comprise c-terminal lysine,
(iv) higher percentage of sialic acid being N-acetylneuraminic acid,
(v) lower percentage of sialic acid being N-glycolylneuraminic acid,
(vi) lower content of afucosylated glycoforms,
as compared to the ustekinumab reference product.
21 . The biosimilar recombinant ustekinumab antibody of claim 18 , wherein the biosimilar recombinant ustekinumab antibody meets one or more of the following criteria:
(vii) greater than 90% of the sialic acid being N-acetylneuraminic acid,
(viii) less than 10% of the sialic acid being N-glycolylneuraminic acid,
(ix) content of afucosylated glycoforms is less than 8% or,
(x) content of terminal a-galactose is less than or equal to 0.1%.
22 . A biosimilar recombinant ustekinumab antibody produced in CHO cells, wherein the recombinant ustekinumab antibody is a biosimilar of a ustekinumab reference product, wherein the ustekinumab reference product is produced in murine myeloma cells.
23 . The biosimilar recombinant ustekinumab antibody of claim 22 , comprising a heavy chain and a light chain, wherein the heavy chain has the sequence according to SEQ ID No. 1 and the light chain has the sequence according to SEQ ID No. 2, wherein the recombinant ustekinumab antibody is a biosimilar of the ustekinumab reference product, wherein the ustekinumab reference product is produced in murine myeloma cells.
24 . The biosimilar recombinant ustekinumab antibody of claim 22 , comprising a heavy chain and a light chain, wherein the heavy chain has the sequence according to SEQ ID No. 1 and the light chain has the sequence according to SEQ ID No. 2, wherein the recombinant ustekinumab antibody is a biosimilar of the ustekinumab reference product, wherein the ustekinumab reference product is produced in murine myeloma cells, and wherein the ustekinumab reference product comprises a heavy chain according to SEQ ID No. 1 and a light chain according to SEQ ID No. 2.
25 . The biosimilar recombinant ustekinumab antibody of claim 22 that meets one or more of the following criteria:
(i) binding to IL-23 differs from that of the ustekinumab reference product by not more than 20%,
(ii) binding to IL-12 differs from that of the ustekinumab reference product by not more than 20%,
(iii) lower percentage of recombinant ustekinumab antibody molecules comprise c-terminal lysine as compared to the ustekinumab reference product,
(iv) higher percentage of sialic acid being N-acetylneuraminic acid as compared to the ustekinumab reference product,
(v) lower percentage of sialic acid being N-glycolylneuraminic acid as compared to the ustekinumab reference product,
(vi) lower content of afucosylated glycoforms as compared to the ustekinumab reference product,
(vii) greater than 90% of the sialic acid being N-acetylneuraminic acid,
(viii) less than 10% of the sialic acid being N-glycolylneuraminic acid,
(ix) content of afucosylated glycoforms is less than 8% or,
(x) content of terminal a-galactose is less than or equal to 0.1%,
wherein the ustekinumab reference product is produced in murine myeloma cells.
26 . The biosimilar recombinant ustekinumab antibody of claim 22 , having a heavy chain according to SEQ ID No. 1 and a light chain according to SEQ ID NO: 2 that meets one or more of the following criteria:
(i) binding to IL-23 differs from that of the ustekinumab reference product by not more than 20%,
(ii) binding to IL-12 differs from that of the ustekinumab reference product by not more than 20%,
(iii) lower percentage of recombinant ustekinumab antibody molecules comprise c-terminal lysine as compared to the ustekinumab reference product,
(iv) higher percentage of sialic acid being N-acetylneuraminic acid as compared to the ustekinumab reference product,
(v) lower percentage of sialic acid being N-glycolylneuraminic acid as compared to the ustekinumab reference product,
(vi) lower content of afucosylated glycoforms as compared to the ustekinumab reference product,
(vii) greater than 90% of the sialic acid being N-acetylneuraminic acid,
(viii) less than 10% of the sialic acid being N-glycolylneuraminic acid,
(ix) content of afucosylated glycoforms is less than 8% or,
(x) content of terminal a-galactose is less than or equal to 0.1%,
wherein the ustekinumab reference product is produced in murine myeloma cells, and wherein the ustekinumab reference product comprises a heavy chain according to SEQ ID No. 1 and a light chain according to SEQ ID No. 2.