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Masuda K, Kubota M, Nakazawa Y, Iwama C, Watanabe K, Ishikawa N, Tanabe Y, Kono S, Tanemura H, Takahashi S, Makino T, Okumura T, Horiuchi T, Nonaka K, Murakami S, Kamihira M, Omasa T. Establishment of a novel cell line, CHO-MK, derived from Chinese hamster ovary tissues for biologics manufacturing. J Biosci Bioeng 2024; 137:471-479. [PMID: 38472071 DOI: 10.1016/j.jbiosc.2024.02.005] [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: 12/07/2023] [Revised: 02/04/2024] [Accepted: 02/18/2024] [Indexed: 03/14/2024]
Abstract
Chinese hamster ovary (CHO) cells are widely used as a host for producing recombinant therapeutic proteins due to advantages such as human-like post-translational modification, correct protein folding, higher productivity, and a proven track record in biopharmaceutical development. Much effort has been made to improve the process of recombinant protein production, in terms of its yield and productivity, using conventional CHO cell lines. However, to the best of our knowledge, no attempts have been made to acquire new CHO cell lines from Chinese hamster ovary. In this study, we established and characterized a novel CHO cell line, named CHO-MK, derived from freshly isolated Chinese hamster ovary tissues. Some immortalized cell lines were established via sub-culture derived from primary culture, one of which was selected for further development toward a unique expression system design. After adapting serum-free and suspension culture conditions, the resulting cell line exhibited a considerably shorter doubling time (approximately 10 h) than conventional CHO cell lines (approximately 20 h). Model monoclonal antibody (IgG1)-producing cells were generated, and the IgG1 concentration of fed-batch culture reached approximately 5 g/L on day 8 in a 200-L bioreactor. The cell bank of CHO-MK cells was prepared as a new host and assessed for contamination by adventitious agents, with the results indicating that it was free from any such contaminants, including infectious viruses. Taking these findings together, this study showed the potential of CHO-MK cells with a shorter doubling time/process time and enhanced productivity in biologics manufacturing.
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Affiliation(s)
- Kenji Masuda
- Biologics Division, Biologics Technology Research Laboratories I, Daiichi Sankyo Co., Ltd., 2716-1 Kurakake, Akaiwa, Chiyoda-machi, Gunma 370-0503, Japan; Manufacturing Technology Association of Biologics, 2-6-16 Shinkawa, Chuo-ku, Tokyo 104-0033, Japan
| | - Michi Kubota
- Manufacturing Technology Association of Biologics, 2-6-16 Shinkawa, Chuo-ku, Tokyo 104-0033, Japan; Chitose Laboratory Corp., KSP EAST511, 3-2-1 Sakado, Takatsu-ku, Kawasaki, Kanagawa 213-0012, Japan
| | - Yuto Nakazawa
- Biologics Division, Biologics Technology Research Laboratories I, Daiichi Sankyo Co., Ltd., 2716-1 Kurakake, Akaiwa, Chiyoda-machi, Gunma 370-0503, Japan
| | - Chigusa Iwama
- Manufacturing Technology Association of Biologics, 2-6-16 Shinkawa, Chuo-ku, Tokyo 104-0033, Japan; Chitose Laboratory Corp., KSP EAST511, 3-2-1 Sakado, Takatsu-ku, Kawasaki, Kanagawa 213-0012, Japan
| | - Kazuhiko Watanabe
- Biologics Division, Biologics Technology Research Laboratories I, Daiichi Sankyo Co., Ltd., 2716-1 Kurakake, Akaiwa, Chiyoda-machi, Gunma 370-0503, Japan
| | - Naoto Ishikawa
- Biologics Division, Biologics Technology Research Laboratories I, Daiichi Sankyo Co., Ltd., 2716-1 Kurakake, Akaiwa, Chiyoda-machi, Gunma 370-0503, Japan
| | - Yumiko Tanabe
- Biologics Division, Biologics Technology Research Laboratories I, Daiichi Sankyo Co., Ltd., 2716-1 Kurakake, Akaiwa, Chiyoda-machi, Gunma 370-0503, Japan
| | - Satoru Kono
- Biologics Division, Biologics Technology Research Laboratories I, Daiichi Sankyo Co., Ltd., 2716-1 Kurakake, Akaiwa, Chiyoda-machi, Gunma 370-0503, Japan
| | - Hiroki Tanemura
- Biologics Division, Biologics Technology Research Laboratories I, Daiichi Sankyo Co., Ltd., 2716-1 Kurakake, Akaiwa, Chiyoda-machi, Gunma 370-0503, Japan
| | - Shinichi Takahashi
- Biologics Division, Biologics Technology Research Laboratories I, Daiichi Sankyo Co., Ltd., 2716-1 Kurakake, Akaiwa, Chiyoda-machi, Gunma 370-0503, Japan
| | - Tomohiro Makino
- Biologics Division, Biologics Technology Research Laboratories I, Daiichi Sankyo Co., Ltd., 2716-1 Kurakake, Akaiwa, Chiyoda-machi, Gunma 370-0503, Japan
| | - Takeshi Okumura
- Biologics Division, Biologics Technology Research Laboratories I, Daiichi Sankyo Co., Ltd., 2716-1 Kurakake, Akaiwa, Chiyoda-machi, Gunma 370-0503, Japan; Manufacturing Technology Association of Biologics, 2-6-16 Shinkawa, Chuo-ku, Tokyo 104-0033, Japan
| | - Takayuki Horiuchi
- Chitose Laboratory Corp., KSP EAST511, 3-2-1 Sakado, Takatsu-ku, Kawasaki, Kanagawa 213-0012, Japan
| | - Koichi Nonaka
- Biologics Division, Biologics Technology Research Laboratories I, Daiichi Sankyo Co., Ltd., 2716-1 Kurakake, Akaiwa, Chiyoda-machi, Gunma 370-0503, Japan; Manufacturing Technology Association of Biologics, 2-6-16 Shinkawa, Chuo-ku, Tokyo 104-0033, Japan
| | - Sei Murakami
- Manufacturing Technology Association of Biologics, 2-6-16 Shinkawa, Chuo-ku, Tokyo 104-0033, Japan
| | - Masamichi Kamihira
- Manufacturing Technology Association of Biologics, 2-6-16 Shinkawa, Chuo-ku, Tokyo 104-0033, Japan; Department of Chemical Engineering, Faculty of Engineering, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan
| | - Takeshi Omasa
- Manufacturing Technology Association of Biologics, 2-6-16 Shinkawa, Chuo-ku, Tokyo 104-0033, Japan; Department of Biotechnology, Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan.
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Ivanova NG, Kartavtseva IV, Stefanova VN, Ostromyshenskii DI, Podgornaya OI. Tandem Repeat Diversity in Two Closely Related Hamster Species—The Chinese Hamster (Cricetulus griseus) and Striped Hamster (Cricetulus barabensis). Biomedicines 2022; 10:biomedicines10040925. [PMID: 35453675 PMCID: PMC9025346 DOI: 10.3390/biomedicines10040925] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2022] [Revised: 04/12/2022] [Accepted: 04/13/2022] [Indexed: 11/16/2022] Open
Abstract
The Chinese hamster (Cricetulus griseus) and striped hamster (Cricetulus barabensis) are very closely related species with similar karyotypes. The karyotypes differ from each other by one Robertsonian rearrangement and X-chromosome morphology. The level of the tandem repeat (TR) sequences’ evolutional variability is high. The aim of the current work was to trace the TR distribution on the chromosomes of two very closely related species. The striped hamster genome has not yet been sequenced. We classified the Chinese hamster TR in the assemblies available and then compared the mode of the TR distribution in closely related species. Chinese and striped hamsters are separate species due to the relative species specificity of Chinese hamster TR and prominent differences in the TR distribution in both species. The TR variation observed within homologous striped hamster chromosomes is caused by a lack of inbreeding in natural populations. The set of TR tested could be used to examine the CHO lines’ instability that has been observed in heterochromatic regions.
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Affiliation(s)
- Nadezhda G. Ivanova
- Laboratory of Noncoding DNA, Institute of Cytology RAS, Saint Petersburg 194064, Russia; (V.N.S.); (D.I.O.); (O.I.P.)
- Correspondence:
| | - Irina V. Kartavtseva
- Laboratory of Evolutionary Zoology, Federal Scientific Center of the East Asia Terrestrial Biodiversity, Vladivostok 690022, Russia;
| | - Vera N. Stefanova
- Laboratory of Noncoding DNA, Institute of Cytology RAS, Saint Petersburg 194064, Russia; (V.N.S.); (D.I.O.); (O.I.P.)
| | - Dmitrii I. Ostromyshenskii
- Laboratory of Noncoding DNA, Institute of Cytology RAS, Saint Petersburg 194064, Russia; (V.N.S.); (D.I.O.); (O.I.P.)
| | - Olga I. Podgornaya
- Laboratory of Noncoding DNA, Institute of Cytology RAS, Saint Petersburg 194064, Russia; (V.N.S.); (D.I.O.); (O.I.P.)
- Department of Cytology and Histology, Faculty of Biology, St. Petersburg State University, Saint Petersburg 199034, Russia
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Wurm MJ, Wurm FM. Naming CHO cells for bio-manufacturing: Genome plasticity and variant phenotypes of cell populations in bioreactors question the relevance of old names. Biotechnol J 2021; 16:e2100165. [PMID: 34050613 DOI: 10.1002/biot.202100165] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2021] [Revised: 05/10/2021] [Accepted: 05/20/2021] [Indexed: 11/06/2022]
Abstract
Chinese Hamster Ovary [CHO] cells are the workhorse for production of modern biopharmaceuticals. They are however immortalized cells with a high propensity for genetic change. Judging from published culture records, CHO cell populations have undergone hundreds of population doublings since their origin in the late 1950s. Different cell populations were established and named from 1 to 3 decades after their generation, such as CHO-Pro-, CHO-K1, CHO-DG44, CHO-S, CHO-DUK, CHO-DXB-11 to indicate origin and certain phenotypic features. These names are commonly used in scientific publications still today. This article discusses the relevance of such names. We argue that they provide a false sense of identity. To substantiate this, we provide the long (and poorly recorded) history of CHO cells as well as their highly complex genetics. Finally, we suggest an alternative naming system for CHO cells which provides more relevant information. While the implementation of a new naming convention will require substantial discussions among members of the relevant community, it should improve interpretation and comparability between laboratories. This, in turn will help scientific communities and industrial users to attain and further the full potential of CHO cells.
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Affiliation(s)
- Maria J Wurm
- Life Science Faculty, Swiss Federal Institute of Technology Lausanne [EPFL], Lausanne, Switzerland
| | - Florian M Wurm
- Life Science Faculty, Swiss Federal Institute of Technology Lausanne [EPFL], Lausanne, Switzerland
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