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dc.contributor.authorHussain, Hirra; orcid: 0000-0002-0918-4913
dc.contributor.authorPatel, Tulshi
dc.contributor.authorOzanne, Angelica M. S.
dc.contributor.authorVito, Davide
dc.contributor.authorEllis, Mark
dc.contributor.authorHinchliffe, Matthew
dc.contributor.authorHumphreys, David P.
dc.contributor.authorStephens, Paul E.
dc.contributor.authorSweeney, Bernie
dc.contributor.authorWhite, James
dc.contributor.authorDickson, Alan J.; orcid: 0000-0001-9490-645X; email: alan.dickson@manchester.ac.uk
dc.contributor.authorSmales, Christopher M.; orcid: 0000-0002-2762-4724; email: C.M.Smales@kent.ac.uk
dc.date.accessioned2021-10-07T08:24:42Z
dc.date.available2021-10-07T08:24:42Z
dc.date.issued2021-10-06
dc.date.submitted2021-06-18
dc.identifierhttps://chesterrep.openrepository.com/bitstream/handle/10034/626051/bit.27944.pdf?sequence=2
dc.identifierhttps://chesterrep.openrepository.com/bitstream/handle/10034/626051/bit.27944.xml?sequence=3
dc.identifier.citationBiotechnology and Bioengineering
dc.identifier.urihttp://hdl.handle.net/10034/626051
dc.descriptionFrom Wiley via Jisc Publications Router
dc.descriptionHistory: received 2021-06-18, rev-recd 2021-08-31, accepted 2021-09-12, pub-electronic 2021-10-06
dc.descriptionArticle version: VoR
dc.descriptionPublication status: Published
dc.descriptionFunder: UCB UK; Id: http://dx.doi.org/10.13039/100011111
dc.descriptionFunder: Biotechnology and Biological Sciences Research Council; Id: http://dx.doi.org/10.13039/501100000268; Grant(s): BB/R001731/1, BB/R002096/1
dc.description.abstractAbstract: Monoclonal antibodies are the leading class of biopharmaceuticals in terms of numbers approved for therapeutic purposes. Antigen‐binding fragments (Fab) are also used as biotherapeutics and used widely in research applications. The dominant expression systems for full‐length antibodies are mammalian cell‐based, whereas for Fab molecules the preference has been an expression in bacterial systems. However, advances in CHO and downstream technologies make mammalian systems an equally viable option for small‐ and large‐scale Fab production. Using a panel of full‐length IgG antibodies and their corresponding Fab pair with different antigen specificities, we investigated the impact of the IgG and Fab molecule format on production from Chinese hamster ovary (CHO) cells and assessed the cellular capability to process and produce these formats. The full‐length antibody format resulted in the recovery of fewer mini‐pools posttransfection when compared to the corresponding Fab fragment format that could be interpreted as indicative of a greater overall burden on cells. Antibody‐producing cell pools that did recover were subsequently able to achieve higher volumetric protein yields (mg/L) and specific productivity than the corresponding Fab pools. Importantly, when the actual molecules produced per cell of a given format was considered (as opposed to mass), CHO cells produced a greater number of Fab molecules per cell than obtained with the corresponding IgG, suggesting that cells were more efficient at making the smaller Fab molecule. Analysis of cell pools showed that gene copy number was not correlated to the subsequent protein production. The amount of mRNA correlated with secreted Fab production but not IgG, whereby posttranscriptional processes act to limit antibody production. In summary, we provide the first comparative description of how full‐length IgG and Fab antibody formats impact on the outcomes of a cell line construction process and identify potential limitations in their production that could be targeted for engineering increases in the efficiency in the manufacture of these recombinant antibody formats.
dc.languageen
dc.rightsLicence for VoR version of this article: http://creativecommons.org/licenses/by/4.0/
dc.sourceissn: 0006-3592
dc.sourceissn: 1097-0290
dc.subjectARTICLE
dc.subjectARTICLES
dc.subjectantibody fragments
dc.subjectcell line construction
dc.subjectCHO cells
dc.subjectrecombinant antibodies
dc.titleA comparative analysis of recombinant Fab and full‐length antibody production in Chinese hamster ovary cells
dc.typearticle
dc.date.updated2021-10-07T08:24:41Z
dc.date.accepted2021-09-12


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