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Zeh N, Schmidt M, Schulz P, Fischer S. The new frontier in CHO cell line development: From random to targeted transgene integration technologies. Biotechnol Adv 2024; 75:108402. [PMID: 38950872 DOI: 10.1016/j.biotechadv.2024.108402] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2024] [Revised: 06/21/2024] [Accepted: 06/27/2024] [Indexed: 07/03/2024]
Abstract
Cell line development represents a crucial step in the development process of a therapeutic glycoprotein. Chinese hamster ovary (CHO) cells are the most frequently employed mammalian host cell system for the industrial manufacturing of biologics. The predominant application of CHO cells for heterologous recombinant protein expression lies in the relative simplicity of stably introducing ectopic DNA into the CHO host cell genome. Since CHO cells were first used as expression host for the industrial production of biologics in the late 1980s, stable genomic transgene integration has been achieved almost exclusively by random integration. Since then, random transgene integration had become the gold standard for generating stable CHO production cell lines due to a lack of viable alternatives. However, it was eventually demonstrated that this approach poses significant challenges on the cell line development process such as an increased risk of inducing cell line instability. In recent years, significant discoveries of new and highly potent (semi)-targeted transgene integration systems have paved the way for a technological revolution in the cell line development sector. These advanced methodologies comprise the application of transposase-, recombinase- or Cas9 nuclease-mediated site-specific genomic integration techniques, which enable a scarless transfer of the transgene expression cassette into transcriptionally active loci within the host cell genome. This review summarizes recent advancements in the field of transgene integration technologies for CHO cell line development and compare them to the established random integration approach. Moreover, advantages and limitations of (semi)-targeted integration techniques are discussed, and benefits and opportunities for the biopharmaceutical industry are outlined.
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Affiliation(s)
- Nikolas Zeh
- Cell Line Development, Bioprocess Development Biologicals, Boehringer Ingelheim Pharma GmbH and Co.KG, Biberach an der Riss, Germany
| | - Moritz Schmidt
- Cell Line Development, Bioprocess Development Biologicals, Boehringer Ingelheim Pharma GmbH and Co.KG, Biberach an der Riss, Germany
| | - Patrick Schulz
- Cell Line Development, Bioprocess Development Biologicals, Boehringer Ingelheim Pharma GmbH and Co.KG, Biberach an der Riss, Germany
| | - Simon Fischer
- Cell Line Development, Bioprocess Development Biologicals, Boehringer Ingelheim Pharma GmbH and Co.KG, Biberach an der Riss, Germany.
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Nelson L, Veling M, Farhangdoust F, Cai X, Huhn S, Soloveva V, Chang M. Transcriptomics and cell painting analysis reveals molecular and morphological features associated with fed-batch production performance in CHO recombinant clones. Biotechnol Bioeng 2023; 120:3177-3190. [PMID: 37555462 DOI: 10.1002/bit.28518] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2023] [Revised: 07/14/2023] [Accepted: 07/16/2023] [Indexed: 08/10/2023]
Abstract
Stable, highly productive mammalian cells are critical for manufacturing affordable and effective biological medicines. Establishing a rational design of optimal biotherapeutic expression systems requires understanding how cells support the high demand for efficient biologics production. To that end, we performed transcriptomics and high-throughput imaging studies to identify putative genes and morphological features that underpin differences in antibody productivity among clones from a Chinese hamster ovary cell line. During log phase growth, we found that the expression of genes involved in biological processes related to cellular morphology varied significantly between clones with high specific productivity (qP > 35 pg/cell/day) and low specific productivity (qP < 20 pg/cell/day). At Day 10 of a fed-batch production run, near peak viable cell density, differences in gene expression related to metabolism, epigenetic regulation, and proliferation became prominent. Furthermore, we identified a subset of genes whose expression predicted overall productivity, including glutathione synthetase (Gss) and lactate dehydrogenase A (LDHA). Finally, we demonstrated the feasibility of cell painting coupled with high-throughput imaging to assess the morphological properties of intracellular organelles in relation to growth and productivity in fed-batch production. Our efforts lay the groundwork for systematic elucidation of clone performance using a multiomics approach that can guide future process design strategies.
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Affiliation(s)
| | | | | | - Xuezhu Cai
- Merck & Co., Inc., Rahway, New Jersey, USA
| | - Steve Huhn
- Merck & Co., Inc., Rahway, New Jersey, USA
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Castellanos MM, Gressard H, Li X, Magagnoli C, Moriconi A, Stranges D, Strodiot L, Tello Soto M, Zwierzyna M, Campa C. CMC Strategies and Advanced Technologies for Vaccine Development to Boost Acceleration and Pandemic Preparedness. Vaccines (Basel) 2023; 11:1153. [PMID: 37514969 PMCID: PMC10386492 DOI: 10.3390/vaccines11071153] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2023] [Revised: 06/15/2023] [Accepted: 06/22/2023] [Indexed: 07/30/2023] Open
Abstract
This review reports on an overview of key enablers of acceleration/pandemic and preparedness, covering CMC strategies as well as technical innovations in vaccine development. Considerations are shared on implementation hurdles and opportunities to drive sustained acceleration for vaccine development and considers learnings from the COVID pandemic and direct experience in addressing unmet medical needs. These reflections focus on (i) the importance of a cross-disciplinary framework of technical expectations ranging from target antigen identification to launch and life-cycle management; (ii) the use of prior platform knowledge across similar or products/vaccine types; (iii) the implementation of innovation and digital tools for fast development and innovative control strategies.
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Affiliation(s)
- Maria Monica Castellanos
- Drug Product Development, Vaccines Technical R&D, GSK, 14200 Shady Grove Road, Rockville, MD 20850, USA
| | - Hervé Gressard
- Project & Digital Sciences, Vaccines Technical R&D, GSK, Rue de l'Institut 89, 1330 Rixensart, Belgium
| | - Xiangming Li
- Drug Substance Development, Vaccines Technical R&D, GSK, 14200 Shady Grove Road, Rockville, MD 20850, USA
| | - Claudia Magagnoli
- Analytical Research & Development, Vaccines Technical R&D, GSK, Via Fiorentina 1, 53100 Siena, Italy
| | - Alessio Moriconi
- Drug Product Development, Vaccines Technical R&D, GSK, Via Fiorentina 1, 53100 Siena, Italy
| | - Daniela Stranges
- Drug Product Development, Vaccines Technical R&D, GSK, Via Fiorentina 1, 53100 Siena, Italy
| | - Laurent Strodiot
- Drug Product Development, Vaccines Technical R&D, GSK, Rue de l'Institut 89, 1330 Rixensart, Belgium
| | - Monica Tello Soto
- Drug Substance Development, Vaccines Technical R&D, GSK, Rue de l'Institut 89, 1330 Rixensart, Belgium
| | - Magdalena Zwierzyna
- Project & Digital Sciences, Vaccines Technical R&D, GSK, Via Fiorentina 1, 53100 Siena, Italy
| | - Cristiana Campa
- Vaccines Global Technical R&D, GSK, Via Fiorentina 1, 53100 Siena, Italy
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Soltermann F, Struwe WB, Kukura P. Label-free methods for optical in vitro characterization of protein-protein interactions. Phys Chem Chem Phys 2021; 23:16488-16500. [PMID: 34342317 PMCID: PMC8359934 DOI: 10.1039/d1cp01072g] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2021] [Accepted: 07/23/2021] [Indexed: 12/13/2022]
Abstract
Protein-protein interactions are involved in the regulation and function of the majority of cellular processes. As a result, much effort has been aimed at the development of methodologies capable of quantifying protein-protein interactions, with label-free methods being of particular interest due to the associated simplified workflows and minimisation of label-induced perturbations. Here, we review recent advances in optical technologies providing label-free in vitro measurements of affinities and kinetics. We provide an overview and comparison of existing techniques and their principles, discussing advantages, limitations, and recent applications.
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Affiliation(s)
- Fabian Soltermann
- Physical and Theoretical Chemistry, Department of Chemistry, University of OxfordUK
| | - Weston B. Struwe
- Physical and Theoretical Chemistry, Department of Chemistry, University of OxfordUK
| | - Philipp Kukura
- Physical and Theoretical Chemistry, Department of Chemistry, University of OxfordUK
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