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Title

Bispecific antibody characterization by a combination of intact and site-specific/chain-specific LC/MS techniques

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Published in Talanta. 2021, vol. 236, 122836
Abstract Bispecific antibodies (bsAbs) are considered as an important class of biopharmaceutical drugs, with about 160 products in clinical trials. From an analytical point of view, the correct chain-association is one of the most critical challenge to monitor during bsAbs development and production. In the present study, a full analytical workflow has been developed based on the use of various chromatographic modes: size exclusion chromatography (SEC), ion exchange chromatography (IEX), reversed phase liquid chromatography (RPLC), and hydrophilic interaction chromatography (HILIC), all combined with high resolution mass spectrometry (MS). This analytical strategy was applied to Hemlibra® (emicizumab), which is certainly the most successful commercial bsAb to date. Using this strategy, it was possible to monitor the presence of mispaired bsAb species and detect and identify additional post-translational modifications (PTMs).
Keywords Bispecific antibodyEmicizumabHILIC-MSHemlibraIEX-MSRPLC-MSSEC-MS
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PMID: 34635226
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Structures
Research group Sciences analytiques
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DUIVELSHOF, Bastiaan et al. Bispecific antibody characterization by a combination of intact and site-specific/chain-specific LC/MS techniques. In: Talanta (Oxford), 2021, vol. 236, p. 122836. doi: 10.1016/j.talanta.2021.122836 https://archive-ouverte.unige.ch/unige:155898

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Deposited on : 2021-11-02

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