PMID- 37708991 OWN - NLM STAT- MEDLINE DCOM- 20240108 LR - 20240108 IS - 0003-4509 (Print) IS - 0003-4509 (Linking) VI - 82 IP - 1 DP - 2024 Jan TI - Charge variants of proposed biosimilar to Omalizumab: Isolation, purification and analysis by HPLC methods. PG - 64-71 LID - S0003-4509(23)00106-2 [pii] LID - 10.1016/j.pharma.2023.09.003 [doi] AB - Omalizumab (Xolair) is a humanized monoclonal antibody derived by recombinant DNA technology. It binds specifically to immunoglobulin E (IgE) which plays a major role in allergic reaction by releasing histamine and other inflammatory factors from mast cells. Omalizumab binds circulatory IgE with high affinity and prevents from its binding to mast cell receptor. Charge variants are one of the critical quality attributes (CQAs) in biological drug development and sources of heterogeneity which needs to be considered in biosimilarity assessment. In this study, biosimilar product of Xolair was expressed in mammalian cell culture process in laboratory to isolate charge variants (acidic, main peak and basic). Different charge variants were isolated from intermediate purified biosimilar product of Xolair. Isolated charge variants were purified with preparative cation exchange chromatography technique and characterized with different analytical tools includes size exclusion chromatography (SEC-HPLC) and cation exchange chromatography (CEX-HPLC). Purity of acidic, main peak and basic variants was 99.58%, 99.98% and 98.64% respectively as per SEC-HPLC and according to CEX-HPLC purity was 94.25%, 95.58% and 91.33% respectively. The study data indicates that isolated charge variants were purified with desired purity and can be further used for process characterization, in vitro potency and in vivo kinetics studies. CI - Copyright (c) 2023 Academie Nationale de Pharmacie. Published by Elsevier Masson SAS. All rights reserved. FAU - Gupta, Tarun AU - Gupta T AD - Institute of Science, Nirma University, 382481 Ahmedabad, Gujarat, India; Downstream Process Development, Kashiv BioSciences Pvt Ltd., 382210 Ahmedabad, Gujarat, India. FAU - Seshadri, Sriram AU - Seshadri S AD - Institute of Science, Nirma University, 382481 Ahmedabad, Gujarat, India. Electronic address: sriram.seshadri@nirmauni.ac.in. LA - eng PT - Journal Article DEP - 20230912 PL - France TA - Ann Pharm Fr JT - Annales pharmaceutiques francaises JID - 2985176R RN - 2P471X1Z11 (Omalizumab) RN - 0 (Biosimilar Pharmaceuticals) RN - 37341-29-0 (Immunoglobulin E) RN - 0 (Cations) SB - IM MH - Animals MH - *Omalizumab MH - Chromatography, High Pressure Liquid MH - *Biosimilar Pharmaceuticals MH - Immunoglobulin E MH - Cations MH - Mammals OTO - NOTNLM OT - Chromatographie OT - Chromatography OT - Des anticorps monoclonaux OT - Immunoglobulin E OT - Immunoglobuline E OT - Monoclonal antibodies OT - Potency OT - Puissance OT - Xolair EDAT- 2023/09/15 00:42 MHDA- 2024/01/08 06:41 CRDT- 2023/09/14 19:14 PHST- 2023/08/02 00:00 [received] PHST- 2023/09/08 00:00 [revised] PHST- 2023/09/09 00:00 [accepted] PHST- 2024/01/08 06:41 [medline] PHST- 2023/09/15 00:42 [pubmed] PHST- 2023/09/14 19:14 [entrez] AID - S0003-4509(23)00106-2 [pii] AID - 10.1016/j.pharma.2023.09.003 [doi] PST - ppublish SO - Ann Pharm Fr. 2024 Jan;82(1):64-71. doi: 10.1016/j.pharma.2023.09.003. Epub 2023 Sep 12.