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Müller J, Ott V, Weiss N, Neubauer P, Eibl D, Eibl R. Process Intensification Using a One‐Step Inoculum Production and High‐Seeded Fed‐Batch Processes. CHEM-ING-TECH 2022. [DOI: 10.1002/cite.202200097] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Jan Müller
- ZHAW Zurich University of Applied Sciences School of Life Sciences and Facility Management Grüentalstrasse 14 8820 Wädenswil Switzerland
| | - Vivian Ott
- ZHAW Zurich University of Applied Sciences School of Life Sciences and Facility Management Grüentalstrasse 14 8820 Wädenswil Switzerland
| | - Noémi Weiss
- ZHAW Zurich University of Applied Sciences School of Life Sciences and Facility Management Grüentalstrasse 14 8820 Wädenswil Switzerland
| | - Peter Neubauer
- Technische Universität Berlin Institute for Biotechnology Ackerstraße 76 13355 Berlin Germany
| | - Dieter Eibl
- ZHAW Zurich University of Applied Sciences School of Life Sciences and Facility Management Grüentalstrasse 14 8820 Wädenswil Switzerland
| | - Regine Eibl
- ZHAW Zurich University of Applied Sciences School of Life Sciences and Facility Management Grüentalstrasse 14 8820 Wädenswil Switzerland
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Seed Train Intensification Using an Ultra-High Cell Density Cell Banking Process. Processes (Basel) 2022. [DOI: 10.3390/pr10050911] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023] Open
Abstract
A current focus of biopharmaceutical research and production is seed train process intensification. This allows for intermediate cultivation steps to be avoided or even for the direct inoculation of a production bioreactor with cells from cryovials or cryobags. Based on preliminary investigations regarding the suitability of high cell densities for cryopreservation and the suitability of cells from perfusion cultivations as inoculum for further cultivations, an ultra-high cell density working cell bank (UHCD-WCB) was established for an immunoglobulin G (IgG)-producing Chinese hamster ovary (CHO) cell line. The cells were previously expanded in a wave-mixed bioreactor with internal filter-based perfusion and a 1 L working volume. This procedure allows for cryovial freezing at 260 × 106 cells mL−1 for the first time. The cryovials are suitable for the direct inoculation of N−1 bioreactors in the perfusion mode. These in turn can be used to inoculate subsequent IgG productions in the fed-batch mode (low-seed fed-batch or high-seed fed-batch) or the continuous mode. A comparison with the standard approach shows that cell growth and antibody production are comparable, but time savings of greater than 35% are possible for inoculum production.
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