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Farrell A, Mittermayr S, Morrissey B, Mc Loughlin N, Navas Iglesias N, Marison IW, Bones J. Quantitative host cell protein analysis using two dimensional data independent LC-MS(E). Anal Chem 2015; 87:9186-93. [PMID: 26280711 DOI: 10.1021/acs.analchem.5b01377] [Citation(s) in RCA: 54] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
Host cell proteins (HCPs) are bioprocess-related impurities arising from cell-death or secretion from nonhuman cells used for recombinant protein production. Clearance of HCPs through downstream purification (DSP) is required to produce safe and efficacious therapeutic proteins. While traditionally measured using anti-HCP ELISA, more in-depth approaches for HCP characterization may ensure that risks to patients from HCPs are adequately assessed. Mass spectrometry methods provide rationale for targeted removal strategies through the provision of both qualitative and quantitative HCP information. A high pH, low pH, reversed-phase data independent 2D-LC-MS(E) proteomic platform was applied to determine HCP repertoires in the Protein A purified monoclonal antibody (mAb) samples as a function of culture harvest time, elution buffer used for DSP and also following inclusion of additional DSP steps. Critical quality attributes (CQAs) were examined for mAbs purified with different Protein A elution buffers to ensure that the selected buffers not only minimized the HCP profile but also exhibited no adverse effect on product quality. Results indicated that an arginine based Protein A elution buffer minimized the levels of HCPs identified and quantified in a purified mAb sample and also demonstrated no impact on product CQAs. It was also observed that mAbs harvested at later stages of cell culture contained higher concentrations of HCPs but that these were successfully removed by the addition of DSP steps complementary to Protein A purification. Taken together, our results showed how mass spectrometry based methods for HCP determination in conjunction with careful consideration of processing parameters such as harvest time, Protein A elution buffers, and subsequent DSP steps can reduce the HCP repertoire of therapeutic mAbs.
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Affiliation(s)
- Amy Farrell
- Characterisation and Comparability Laboratory, NIBRT-The National Institute for Bioprocessing Research and Training , Foster Avenue, Mount Merrion, Blackrock, Co., Dublin, Ireland.,School of Biotechnology, Dublin City University , Glasnevin, Dublin 9, Ireland
| | - Stefan Mittermayr
- Characterisation and Comparability Laboratory, NIBRT-The National Institute for Bioprocessing Research and Training , Foster Avenue, Mount Merrion, Blackrock, Co., Dublin, Ireland
| | - Brian Morrissey
- Characterisation and Comparability Laboratory, NIBRT-The National Institute for Bioprocessing Research and Training , Foster Avenue, Mount Merrion, Blackrock, Co., Dublin, Ireland
| | - Niaobh Mc Loughlin
- Characterisation and Comparability Laboratory, NIBRT-The National Institute for Bioprocessing Research and Training , Foster Avenue, Mount Merrion, Blackrock, Co., Dublin, Ireland
| | - Natalia Navas Iglesias
- Department of Analytical Chemistry, University of Granada , Avenue Fuentenueva S/N, 18071 Granada, Spain
| | - Ian W Marison
- School of Biotechnology, Dublin City University , Glasnevin, Dublin 9, Ireland
| | - Jonathan Bones
- Characterisation and Comparability Laboratory, NIBRT-The National Institute for Bioprocessing Research and Training , Foster Avenue, Mount Merrion, Blackrock, Co., Dublin, Ireland
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Millán Martín S, Delporte C, Farrell A, Navas Iglesias N, McLoughlin N, Bones J. Comparative analysis of monoclonal antibody N-glycosylation using stable isotope labelling and UPLC-fluorescence-MS. Analyst 2015; 140:1442-7. [DOI: 10.1039/c4an02345e] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
A twoplex method using 12C6 and 13C6 stable isotope analogies of 2-aminobenzoic acid (2-AA) is described for LC-fluorescence-MS based quantitative and comparative analysis of N-glycans present on monoclonal antibodies.
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Affiliation(s)
- Silvia Millán Martín
- Characterisation and Comparability Laboratory
- NIBRT – The National Institute for Bioprocessing Research and Training
- Dublin
- Ireland
| | - Cédric Delporte
- Characterisation and Comparability Laboratory
- NIBRT – The National Institute for Bioprocessing Research and Training
- Dublin
- Ireland
- Laboratory of Pharmaceutical Chemistry & Analytical Platform of the Faculty of Pharmacy
| | - Amy Farrell
- Characterisation and Comparability Laboratory
- NIBRT – The National Institute for Bioprocessing Research and Training
- Dublin
- Ireland
| | - Natalia Navas Iglesias
- Department of Analytical Chemistry
- Faculty of Science
- Biomedical Research Institute
- University of Granada
- 18071 Granada
| | - Niaobh McLoughlin
- Characterisation and Comparability Laboratory
- NIBRT – The National Institute for Bioprocessing Research and Training
- Dublin
- Ireland
| | - Jonathan Bones
- Characterisation and Comparability Laboratory
- NIBRT – The National Institute for Bioprocessing Research and Training
- Dublin
- Ireland
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Capitán-Vallvey LF, Iglesias NN, de Orbe Payá I, Castaneda RA. Simultaneous determination of tartrazine and sunset yellow in cosmetic products by first-derivative spectrophotometry. Mikrochim Acta 1997. [DOI: 10.1007/bf01242678] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Solinas AC, Rajcovich J, Iglesias NN. [A case of pulp gangrene in a tooth with incomplete root development. Post-operative therapy and control during nine years]. Rev Asoc Odontol Argent 1979; 67:403-4. [PMID: 296487] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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