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- CA‑CAS‑01‑A: A Permissive Cell Line for Isolation and Live Attenuated Vaccine Development Against African Swine Fever Virus
- Seung-Chul Lee , Yongkwan Kim , Ji-Won Cha , Kiramage Chathuranga , Niranjan Dodantenna , Hyeok-Il Kwon , Min Ho Kim , Weonhwa Jheong , In-Joong Yoon , Joo Young Lee , Sung-Sik Yoo , Jong-Soo Lee
- J. Microbiol. 2024;62(2):125-134. Published online March 13, 2024
- DOI: https://doi.org/10.1007/s12275-024-00116-1
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- 7 Web of Science
- 4 Crossref
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Abstract
PDF - African swine fever virus (ASFV) is the causative agent of the highly lethal African swine fever disease that affects domestic pigs and wild boars. In spite of the rapid spread of the virus worldwide, there is no licensed vaccine available. The lack of a suitable cell line for ASFV propagation hinders the development of a safe and effective vaccine. For ASFV propagation, primary swine macrophages and monocytes have been widely studied. However, obtaining these cells can be time-consuming and expensive, making them unsuitable for mass vaccine production. The goal of this study was to validate the suitability of novel CA-CAS-01-A (CAS-01) cells, which was identified as a highly permissive cell clone for ASFV replication in the MA-104 parental cell line for live attenuated vaccine development. Through a screening experiment, maximum ASFV replication was observed in the CAS-01 cell compared to other sub-clones of MA-104 with 14.89 and log10 7.5 ± 0.15 Ct value and TCID50/ ml value respectively. When CAS-01 cells are inoculated with ASFV, replication of ASFV was confirmed by Ct value for ASFV DNA, HAD50/ ml assay, TCID50/ ml assay, and cytopathic effects and hemadsoption were observed similar to those in primary porcine alveolar macrophages after 5th passage. Additionally, we demonstrated stable replication and adaptation of ASFV over the serial passage. These results suggest that CAS-01 cells will be a valuable and promising cell line for ASFV isolation, replication, and development of live attenuated vaccines.
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Citations
Citations to this article as recorded by
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Journal of Microbiology.2025; 63(7): e2504015. CrossRef - Development and characterization of high-efficiency cell-adapted live attenuated vaccine candidate against African swine fever
Min Ho Kim, Ashan Subasinghe, Yongkwan Kim, Hyeok-Il Kwon, Yehjin Cho, Kiramage Chathuranga, Ji-Won Cha, Ji-Yoon Moon, Ji-Hyeon Hong, Jin Kim, Seung-Chul Lee, Niranjan Dodantenna, Nuwan Gamage, W. A. Gayan Chathuranga, Yeonji Kim, In-Joong Yoon, Joo Young
Emerging Microbes & Infections.2024;[Epub] CrossRef
- Establishment of a highly sensitive porcine alveolar macrophage cell line for African swine fever virus
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