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Praxedes ÉA, Oliveira LRMD, da Silva Viana JV, Rodrigues LLV, de Brito Vieira Neto J, Sales SLA, Dos Santos Luciano MC, Oliveira MFD, Pessoa C, Pereira AF. Serum starvation is as efficient as roscovitine on the cycle synchronization in G 0/G 1 of red-rumped agouti fibroblasts. In Vitro Cell Dev Biol Anim 2024; 60:249-257. [PMID: 38427137 DOI: 10.1007/s11626-024-00866-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2023] [Accepted: 02/05/2024] [Indexed: 03/02/2024]
Abstract
Fibroblast cycle synchronization in G0/G1 is an essential step for nuclear reprogramming by cloning or induced cells to pluripotency. Considering the diversity among rodents and the ecological and scientific importance of these animals, we compared the contact inhibition, serum starvation, and 10 µM of roscovitine as methods of synchronization of red-rumped agouti fibroblasts. The effects of each protocol were evaluated on the percentage of cycle phase, morphology, viability, and apoptosis levels. The results showed that culturing the cells to serum starvation for 24 h (75.9%), 48 h (81.6%), 72 h (86.2%), 96 h (84.0%), and 120 h (83.7%) yielded a significantly higher percentage of cells arrested in the G0/G1 (P < 0.05) phase than cells not subjected to any cell cycle synchronization method (31.4%). Also, this effect was not different between the times of 48 and 120 h (P > 0.05). A similar response was observed for cells cultured with roscovitine for 12 h (86.9%), 24 h (74.8%), and 48 h (81.7%), with a higher percentage of synchronized cells in G0/G1 compared to cells not submitted to any synchronization treatment (52.2%). Nevertheless, this effect was best evidenced at 12 h (P < 0.05). Also, the contact inhibition for 24-120 h could not synchronize cells in G0/G1, with values ranging from 70.9 to 77.9% (P > 0.05). Moreover, no difference was observed for morphology, viability, and apoptosis levels in any synchronization method (P > 0.05). Therefore, serum starvation is as efficient as roscovitine on cycle synchronization in G0/G1 of red-rumped agouti fibroblasts.
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Affiliation(s)
- Érika Almeida Praxedes
- Laboratory of Animal Biotechnology, Universidade Federal Rural Do Semi-Árido, Av. Francisco Mota, 572, Mossoró, RN, 59625-900, Brazil
| | | | - João Vitor da Silva Viana
- Laboratory of Animal Biotechnology, Universidade Federal Rural Do Semi-Árido, Av. Francisco Mota, 572, Mossoró, RN, 59625-900, Brazil
| | - Luanna Lorenna Vieira Rodrigues
- Laboratory of Animal Biotechnology, Universidade Federal Rural Do Semi-Árido, Av. Francisco Mota, 572, Mossoró, RN, 59625-900, Brazil
| | | | | | | | - Moacir Franco de Oliveira
- Laboratory of Animal Biotechnology, Universidade Federal Rural Do Semi-Árido, Av. Francisco Mota, 572, Mossoró, RN, 59625-900, Brazil
| | - Cláudia Pessoa
- Experimental Oncology Laboratory, Universidade Federal Do Ceará, Fortaleza, CE, Brazil
| | - Alexsandra Fernandes Pereira
- Laboratory of Animal Biotechnology, Universidade Federal Rural Do Semi-Árido, Av. Francisco Mota, 572, Mossoró, RN, 59625-900, Brazil.
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Praxedes ÉA, Silva MB, Oliveira LRMD, Viana JVDS, Silva AR, Oliveira MFD, Pereira AF. Establishment, characterization, and cryopreservation of cell lines derived from red-rumped agouti (Dasyprocta leporina Linnaeus, 1758) - A study in a wild rodent. Cryobiology 2020; 98:63-72. [PMID: 33359644 DOI: 10.1016/j.cryobiol.2020.12.006] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2020] [Revised: 12/18/2020] [Accepted: 12/21/2020] [Indexed: 12/18/2022]
Abstract
Somatic cells can be used for rescuing wild mammals of ecological and economic importance, such as red-rumped agouti, through their application in advanced technologies. Thus, appropriate cell isolation, culture, and storage through cryopreservation can ensure the future safe use of these cells. We aimed to establish and evaluate the effects of culture time (second, fifth, and eighth passages) and cryopreservation on the morphology, viability, metabolism, proliferative activity, reactive oxygen species (ROS) levels, mitochondrial membrane potential (ΔΨm), and apoptosis on somatic cells derived from red-rumped agouti skin. Initially, we identified six dermal fibroblast lines by morphology, immunophenotyping, and karyotyping assays. In vitro culture after the second, fifth, and eighth passages, as well as the cryopreservation conditions used did not affect the metabolism or level of apoptosis. Nevertheless, cells in the fifth passage featured a reduction in proliferative activity and an increase in ROS levels when compared to second and eighth passage cells. Moreover, cryopreservation resulted in reduced ΔΨm when compared to non-cryopreserved cells. Additionally, cryopreserved cells showed a reduction in viability immediately after thawing; nevertheless, the viability of these cells was re-established after 11 days of in vitro culture and was similar to that of non-cryopreserved cells. In conclusion, we have shown that viable fibroblasts can be obtained from red-rumped agouti skin, featuring minimal changes after eight passages in in vitro culture systems. Additionally, adjustments to the cryopreservation protocol are necessary to reduce cellular oxidative stress caused by low temperatures.
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Affiliation(s)
- Érika Almeida Praxedes
- Laboratory of Animal Biotechnology, Federal Rural University of Semi-Arid (UFERSA), Mossoro, RN, Brazil
| | - Maria Bárbara Silva
- Laboratory of Animal Biotechnology, Federal Rural University of Semi-Arid (UFERSA), Mossoro, RN, Brazil
| | | | - João Vitor da Silva Viana
- Laboratory of Animal Biotechnology, Federal Rural University of Semi-Arid (UFERSA), Mossoro, RN, Brazil
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