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Jeon AY, Cho JY, Park J, Kim WJ, Kim YO, Kong HJ, Kim JW. Molecular cytogenetic analysis of the olive flounder embryonic cell line FGBC8 and its applicability to biotechnology. FISH & SHELLFISH IMMUNOLOGY 2023; 142:109077. [PMID: 37726081 DOI: 10.1016/j.fsi.2023.109077] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/22/2023] [Revised: 09/05/2023] [Accepted: 09/13/2023] [Indexed: 09/21/2023]
Abstract
We explored the biotechnological applicability of a previously established olive flounder (Paralichthys olivaceus) embryonic cell line (FGBC8). FGBC8 was transfected with pEGFP-c1 and pluripotency-related genes, then infected with viral hemorrhagic septicemia virus (VHSV), and the expression of immune-related genes was observed through quantitative real-time polymerase chain reaction. Transfected cells showed strong green fluorescence 48 h after transfection, and pluripotency-related genes were successfully transfected. In addition, FGBC8 cells were highly susceptible to VHSV and the expression of immune-related genes was induced during infection. Our results demonstrate that FGBC8 cells are valuable research tools for assessing host-pathogen interactions and biotechnological applications.
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Affiliation(s)
- A-Young Jeon
- Biotechnology Research Division, National Institute of Fisheries Science, Busan, 46083, Republic of Korea
| | - Ja Young Cho
- Biotechnology Research Division, National Institute of Fisheries Science, Busan, 46083, Republic of Korea
| | - Jungwook Park
- Biotechnology Research Division, National Institute of Fisheries Science, Busan, 46083, Republic of Korea
| | - Woo-Jin Kim
- Biotechnology Research Division, National Institute of Fisheries Science, Busan, 46083, Republic of Korea
| | - Young-Ok Kim
- Biotechnology Research Division, National Institute of Fisheries Science, Busan, 46083, Republic of Korea
| | - Hee Jeong Kong
- Biotechnology Research Division, National Institute of Fisheries Science, Busan, 46083, Republic of Korea
| | - Ju-Won Kim
- Biotechnology Research Division, National Institute of Fisheries Science, Busan, 46083, Republic of Korea.
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Futami K, Sato S, Maita M, Katagiri T. Lack of a p16 INK4a/ARF locus in fish genome may underlie senescence resistance in the fish cell line, EPC. DEVELOPMENTAL AND COMPARATIVE IMMUNOLOGY 2022; 133:104420. [PMID: 35417735 DOI: 10.1016/j.dci.2022.104420] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/14/2022] [Revised: 04/07/2022] [Accepted: 04/07/2022] [Indexed: 06/14/2023]
Abstract
Unlike most mammalian cell lines, fish cell lines are immortal and resistant to cellular senescence. Elevated expression of H-Ras contributes to the induction of senescence in a fish cell line, EPC, but is not sufficient to induce full senescence. Here, we focused on the absence of a p16INK4a/ARF locus in the fish genome, and investigated whether this might be a critical determinant of the resistance of EPC cells to full senescence. We found that transfected EPC cells constitutively overexpressing p16INK4a exhibited large size and flat morphology characteristic of prematurely senescent cells; the cells also showed p53-independent senescence-like growth arrest and senescence-associated β-galactosidase (SA-β-gal) activity. Furthermore, the mRNA levels of proinflammatory senescence-associated secretory phenotype (SASP) factors increased in EPC cells constitutively overexpressing p16INK4a. These results suggest that the lack of p16INK4a in the fish genome may be a critical determinant of senescence resistance in fish cell lines.
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Affiliation(s)
- Kunihiko Futami
- Department of Marine Biosciences, Tokyo University of Marine Science and Technology, Konan 4-5-7, Minato, Tokyo, 108-8477, Japan.
| | - Shunichi Sato
- Department of Marine Biosciences, Tokyo University of Marine Science and Technology, Konan 4-5-7, Minato, Tokyo, 108-8477, Japan
| | - Masashi Maita
- Department of Marine Biosciences, Tokyo University of Marine Science and Technology, Konan 4-5-7, Minato, Tokyo, 108-8477, Japan
| | - Takayuki Katagiri
- Department of Marine Biosciences, Tokyo University of Marine Science and Technology, Konan 4-5-7, Minato, Tokyo, 108-8477, Japan
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Chen CP, Chan KC, Ho HH, Huang HP, Hsu LS, Wang CJ. Mulberry polyphenol extracts attenuated senescence through inhibition of Ras/ERK via promoting Ras degradation in VSMC. Int J Med Sci 2022; 19:89-97. [PMID: 34975302 PMCID: PMC8692108 DOI: 10.7150/ijms.64763] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/09/2021] [Accepted: 11/04/2021] [Indexed: 02/06/2023] Open
Abstract
Ageing is one of the major risk factors of human diseases, including cancer, diabetes, and cardiovascular disease. Mulberry exhibits a wide range of functions, such as anti-oxidant, anti-inflammation, and anti-diabetes. In this study, we investigated the role of mulberry polyphenol extract (MPE) in K-Ras-induced senescence of smooth muscle cells. Forced expression of K-Ras enhanced senescence of smooth muscle A7r5 cells as shown by the elevation of β-galactosidase activity. Treatment with MPE significantly repressed the Ras, phosphorylated ERK, and β-galactosidase level. MPE triggered the association of cyclins with their corresponding cyclin-dependent protein kinases and hyperphosphorylated retinoblastoma (RB). MPE also down-regulated the levels of K-Ras-induced CDK inhibitors. MPE enhanced the phosphorylated AMP-dependent protein kinase (AMPK) and inducible nitric oxide synthase (iNOS) level in the presence of K-Ras. Pretreatment with either L-NAME or AMPK inhibitor reversed the effects of MPE. In addition, L-NAME and AMPK inhibitor repressed the MPE-induced total and phosphorylated 3-hydroxy-3-methylglutaryl coenzyme A (HMG-Co A) level. MPE repressed K-Ras-induced G0/G1 arrest, whereas L-NAME and AMPK inhibitor blocked the effects of MPE. Our results indicated that MPE recovered the K-Ras-induced senescence of vascular smooth muscle cells through iNOS and AMPK-dependent pathway. Our findings suggested that MPE may prevent ageing-induced atherosclerosis.
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Affiliation(s)
- Ching-Pei Chen
- Cardiovascular division of Changhua Cristian Hospital, Changhua, Taiwan
| | - Kuei-Chuan Chan
- School of Medicine, Chung Shan Medical University, Taichung 402, Taiwan.,Department of Internal Medicine, Chung Shan Medical University Hospital, Taichung, 402, Taiwan
| | - Hsieh-Hsun Ho
- Institute of Biochemistry and Biotechnology, Chung Shan Medical University, Tai-chung, 402, Taiwan
| | - Hui-Pei Huang
- Department of Biochemistry, School of Medicine, Medical College, Chung Shan Medical University, Taichung, 402, Taiwan
| | - Li-Sung Hsu
- Institute of Medicine, Chung Shan Medical University, Taichung, 402, Taiwan.,Clinical Laboratory, Chung Shan Medical University Hospital, Taichung, 402, Taiwan
| | - Chau-Jong Wang
- Department of Health Diet and Industry Management, Chung Shan Medical University, Taichung 402, Taiwan.,Department of Medical Research, Chung Shan Medical University Hospital, Taichung, 402, Taiwan
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