1
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Chênais N, Le Cam A, Guillet B, Lareyre JJ, Labbé C. TGFβ inhibition and mesenchymal to epithelial transition initiation by Xenopus egg extract: first steps towards early reprogramming in fish somatic cell. Sci Rep 2023; 13:9967. [PMID: 37339990 DOI: 10.1038/s41598-023-36354-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2022] [Accepted: 06/01/2023] [Indexed: 06/22/2023] Open
Abstract
Xenopus egg extract is a powerful material to modify cultured cells fate and to induce cellular reprogramming in mammals. In this study, the response of goldfish fin cells to in vitro exposure to Xenopus egg extract, and subsequent culture, was studied using a cDNA microarray approach, gene ontology and KEGG pathways analyses, and qPCR validation. We observed that several actors of the TGFβ and Wnt/β-catenin signaling pathways, as well as some mesenchymal markers, were inhibited in treated cells, while several epithelial markers were upregulated. This was associated with morphological changes of the cells in culture, suggesting that egg extract drove cultured fin cells towards a mesenchymal-epithelial transition. This indicates that Xenopus egg extract treatment relieved some barriers of somatic reprogramming in fish cells. However, the lack of re-expression of pou2 and nanog pluripotency markers, the absence of DNA methylation remodeling of their promoter region, and the strong decrease in de novo lipid biosynthesis metabolism, indicate that reprogramming was only partial. The observed changes may render these treated cells more suitable for studies on in vivo reprogramming after somatic cell nuclear transfer.
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Affiliation(s)
- Nathalie Chênais
- INRAE, UR1037 LPGP, Fish Physiology and Genomics, Campus de Beaulieu, 35000, Rennes, France.
| | - Aurelie Le Cam
- INRAE, UR1037 LPGP, Fish Physiology and Genomics, Campus de Beaulieu, 35000, Rennes, France
| | - Brigitte Guillet
- Université de Rennes 1, Campus de Beaulieu, 35000, Rennes, France
| | - Jean-Jacques Lareyre
- INRAE, UR1037 LPGP, Fish Physiology and Genomics, Campus de Beaulieu, 35000, Rennes, France
| | - Catherine Labbé
- INRAE, UR1037 LPGP, Fish Physiology and Genomics, Campus de Beaulieu, 35000, Rennes, France.
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2
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Depincé A, Le Bail PY, Rouillon C, Labbé C. Embryonic fate after somatic cell nuclear transfer in non-enucleated goldfish oocytes is determined by first cleavages and DNA methylation patterns. Sci Rep 2021; 11:3945. [PMID: 33597571 PMCID: PMC7889938 DOI: 10.1038/s41598-021-83033-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2020] [Accepted: 01/25/2021] [Indexed: 01/30/2023] Open
Abstract
Reducing the variability in nuclear transfer outcome requires a better understanding of its cellular and epigenetic determinants, in order to ensure safer fish regeneration from cryobanked somatic material. In this work, clones from goldfish were obtained using cryopreserved fin cells as donor and non-enucleated oocytes as recipients. We showed that the high variability of clones survival was not correlated to spawn quality. Clones were then characterized for their first cleavages pattern in relation to their developmental fate up to hatching. The first cell cycle duration was increased in clones with abnormal first cleavage, and symmetric first two cleavages increased clone probability to reach later on 24 h- and hatching-stages. At 24 h-stage, 24% of the clones were diploids and from donor genetic origin only. However, ploidy and genetic origin did not determine clones morphological quality. DNA methylation reprogramming in the promoter region of pou2, nanog, and notail marker genes was highly variable, but clones with the nicest morphologies displayed the best DNA methylation reprogramming. To conclude, non-enucleated oocytes did allow authentic clones production. The first two cell cycles were a critical determinant of the clone ability to reach hatching-stage, and DNA methylation reprogramming significantly influenced clones morphological quality.
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Affiliation(s)
- Alexandra Depincé
- INRAE, UR1037 LPGP, Fish Physiology Ad Genomics, Campus de Beaulieu, 35000, Rennes, France
| | - Pierre-Yves Le Bail
- INRAE, UR1037 LPGP, Fish Physiology Ad Genomics, Campus de Beaulieu, 35000, Rennes, France.
| | - Charlène Rouillon
- INRAE, UR1037 LPGP, Fish Physiology Ad Genomics, Campus de Beaulieu, 35000, Rennes, France
| | - Catherine Labbé
- INRAE, UR1037 LPGP, Fish Physiology Ad Genomics, Campus de Beaulieu, 35000, Rennes, France.
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3
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Fujikawa Y, Ishikawa-Fujiwara T, Kuo T, Shinkai N, Shoji T, Kawasaki T, Kamei Y, Sakuraba Y, Sato A, Kinoshita M, Gondo Y, Yuba S, Tsujimura T, Sese J, Todo T. Involvement of Rev1 in alkylating agent-induced loss of heterozygosity in Oryzias latipes. Genes Cells 2020; 25:124-138. [PMID: 31917895 PMCID: PMC7079036 DOI: 10.1111/gtc.12746] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2019] [Revised: 12/25/2019] [Accepted: 12/26/2019] [Indexed: 12/21/2022]
Abstract
Translesion synthesis (TLS) polymerases mediate DNA damage bypass during replication. The TLS polymerase Rev1 has two important functions in the TLS pathway, including dCMP transferase activity and acting as a scaffolding protein for other TLS polymerases at the C‐terminus. Because of the former activity, Rev1 bypasses apurinic/apyrimidinic sites by incorporating dCMP, whereas the latter activity mediates assembly of multipolymerase complexes at the DNA lesions. We generated rev1 mutants lacking each of these two activities in Oryzias latipes (medaka) fish and analyzed cytotoxicity and mutagenicity in response to the alkylating agent diethylnitrosamine (DENA). Mutant lacking the C‐terminus was highly sensitive to DENA cytotoxicity, whereas mutant with reduced dCMP transferase activity was slightly sensitive to DENA cytotoxicity, but exhibited a higher tumorigenic rate than wild‐type fish. There was no significant difference in the frequency of DENA‐induced mutations between mutant with reduced dCMP transferase activity and wild‐type cultured cell. However, loss of heterozygosity (LOH) occurred frequently in cells with reduced dCMP transferase activity. LOH is a common genetic event in many cancer types and plays an important role on carcinogenesis. To our knowledge, this is the first report to identify the involvement of the catalytic activity of Rev1 in suppression of LOH.
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Affiliation(s)
- Yoshihiro Fujikawa
- Radioisotope Research Center, Institute for Radiation Research, Osaka University, Suita, Japan.,Radiation Biology and Medical Genetics, Department of Genome Biology, Graduate School of Medicine, Osaka University, Suita, Japan.,Japan Society for the Promotion of Science Research Fellow, Tokyo, Japan
| | - Tomoko Ishikawa-Fujiwara
- Radioisotope Research Center, Institute for Radiation Research, Osaka University, Suita, Japan.,Radiation Biology and Medical Genetics, Department of Genome Biology, Graduate School of Medicine, Osaka University, Suita, Japan
| | | | - Norio Shinkai
- Artificial Intelligence Research Center (AIRC), AIST, Tokyo, Japan.,Cancer Translational Research Team, RIKEN Center for Advanced Intelligence Project, Tokyo, Japan.,Division of Molecular Modification and Cancer Biology, National Cancer Center Research Institute, Tokyo, Japan
| | - Tatsuma Shoji
- Artificial Intelligence Research Center (AIRC), AIST, Tokyo, Japan.,Humanome Lab., Inc., Tokyo, Japan
| | - Takashi Kawasaki
- Functional Biomolecular Research Group, Biomedical Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), Ikeda, Japan
| | - Yasuhiro Kamei
- Spectrography and Bioimaging Facility, National Institute for Basic Biology, Okazaki, Japan
| | - Yoshiyuki Sakuraba
- Genomic Sciences Center (GSC), RIKEN Yokohama Institute, Yokohama, Japan
| | - Ayuko Sato
- Department of Pathology, Hyogo College of Medicine, Nishinomiya, Japan
| | - Masato Kinoshita
- Division of Applied Bioscience, Graduate School of Agriculture, Kyoto University, Kyoto, Japan
| | - Yoichi Gondo
- Genomic Sciences Center (GSC), RIKEN Yokohama Institute, Yokohama, Japan
| | - Shunsuke Yuba
- Functional Biomolecular Research Group, Biomedical Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), Ikeda, Japan
| | - Tohru Tsujimura
- Department of Pathology, Hyogo College of Medicine, Nishinomiya, Japan
| | - Jun Sese
- RWBC-OIL, AIST, Tokyo, Japan.,Artificial Intelligence Research Center (AIRC), AIST, Tokyo, Japan.,Humanome Lab., Inc., Tokyo, Japan
| | - Takeshi Todo
- Radioisotope Research Center, Institute for Radiation Research, Osaka University, Suita, Japan.,Radiation Biology and Medical Genetics, Department of Genome Biology, Graduate School of Medicine, Osaka University, Suita, Japan
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4
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Rouillon C, Depincé A, Chênais N, Le Bail PY, Labbé C. Somatic cell nuclear transfer in non-enucleated goldfish oocytes: understanding DNA fate during oocyte activation and first cellular division. Sci Rep 2019; 9:12462. [PMID: 31462687 PMCID: PMC6713701 DOI: 10.1038/s41598-019-48096-2] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2019] [Accepted: 07/30/2019] [Indexed: 12/17/2022] Open
Abstract
Nuclear transfer consists in injecting a somatic nucleus carrying valuable genetic information into a recipient oocyte to sire a diploid offspring which bears the genome of interest. It requires that the oocyte (maternal) DNA is removed. In fish, because enucleation is difficult to achieve, non-enucleated oocytes are often used and disappearance of the maternal DNA was reported in some clones. The present work explores which cellular events explain spontaneous erasure of maternal DNA, as mastering this phenomenon would circumvent the painstaking procedure of fish oocyte enucleation. The fate of the somatic and maternal DNA during oocyte activation and first cell cycle was studied using DNA labeling and immunofluorescence in goldfish clones. Maternal DNA was always found as an intact metaphase within the oocyte, and polar body extrusion was minimally affected after oocyte activation. During the first cell cycle, only 40% of the clones displayed symmetric cleavage, and these symmetric clones contributed to 80% of those surviving at hatching. Maternal DNA was often fragmented and located under the cleavage furrow. The somatic DNA was organized either into a normal mitotic spindle or abnormal multinuclear spindle. Scenarios matching the DNA behavior and the embryo fate are proposed.
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Affiliation(s)
- Charlène Rouillon
- INRA, UR1037 LPGP, Fish Physiology and Genomics, Campus de Beaulieu, F-35000, Rennes, France.
| | - Alexandra Depincé
- INRA, UR1037 LPGP, Fish Physiology and Genomics, Campus de Beaulieu, F-35000, Rennes, France
| | - Nathalie Chênais
- INRA, UR1037 LPGP, Fish Physiology and Genomics, Campus de Beaulieu, F-35000, Rennes, France
| | - Pierre-Yves Le Bail
- INRA, UR1037 LPGP, Fish Physiology and Genomics, Campus de Beaulieu, F-35000, Rennes, France
| | - Catherine Labbé
- INRA, UR1037 LPGP, Fish Physiology and Genomics, Campus de Beaulieu, F-35000, Rennes, France.
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5
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Fatira E, Havelka M, Labbé C, Depincé A, Pšenička M, Saito T. A newly developed cloning technique in sturgeons; an important step towards recovering endangered species. Sci Rep 2019; 9:10453. [PMID: 31320687 PMCID: PMC6639416 DOI: 10.1038/s41598-019-46892-4] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2018] [Accepted: 06/19/2019] [Indexed: 11/09/2022] Open
Abstract
Several steps of sturgeon somatic cell nuclear transfer (SCNT) have been recently established, but improvements are needed to make it a feasible tool to preserve the natural populations of this group of endangered species. The donor cell position inside the recipient egg seems to be crucial for its reprogramming; therefore by injecting multiple donor somatic cells instead of a single cell with a single manipulation, we increased the potential for embryo development. Using the Russian sturgeon Acipenser gueldenstaedtii as a multiple cell donor and sterlet Acipenser ruthenus as the non-enucleated egg recipient, we obtained higher proportion of eggs developing into embryos than previously reported with single-SCNT. Molecular data showed the production of a specimen (0.8%) contained only the donor genome with no contribution from the recipient, while two specimens (1.6%) showed both recipient and donor genome. These findings are the first report of donor DNA integration into a sturgeon embryo after interspecific cloning. In all, we provide evidence that cloning with the multiple donor somatic cells can be feasible in the future. Despite the fact that the sturgeon cloning faces limitations, to date it is the most promising technique for their preservation.
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Affiliation(s)
- Effrosyni Fatira
- Faculty of Fisheries and Protection of Waters, South Bohemian Research Center of Aquaculture and Biodiversity of Hydrocenoses, University of South Bohemia in České Budějovice, Zátiší 728/II, 389 25, Vodňany, Czech Republic.
| | - Miloš Havelka
- South Ehime Fisheries Research Center, Ehime University, Ainan, Ehime, 798-4206, Japan
| | - Catherine Labbé
- INRA, Fish Physiology and Genomics department, Campus de Beaulieu, F-35000, Rennes, France
| | - Alexandra Depincé
- INRA, Fish Physiology and Genomics department, Campus de Beaulieu, F-35000, Rennes, France
| | - Martin Pšenička
- Faculty of Fisheries and Protection of Waters, South Bohemian Research Center of Aquaculture and Biodiversity of Hydrocenoses, University of South Bohemia in České Budějovice, Zátiší 728/II, 389 25, Vodňany, Czech Republic
| | - Taiju Saito
- Faculty of Fisheries and Protection of Waters, South Bohemian Research Center of Aquaculture and Biodiversity of Hydrocenoses, University of South Bohemia in České Budějovice, Zátiší 728/II, 389 25, Vodňany, Czech Republic
- South Ehime Fisheries Research Center, Ehime University, Ainan, Ehime, 798-4206, Japan
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6
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Fatira E, Havelka M, Labbé C, Depincé A, Iegorova V, Pšenička M, Saito T. Application of interspecific Somatic Cell Nuclear Transfer (iSCNT) in sturgeons and an unexpectedly produced gynogenetic sterlet with homozygous quadruple haploid. Sci Rep 2018; 8:5997. [PMID: 29662093 PMCID: PMC5902484 DOI: 10.1038/s41598-018-24376-1] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2017] [Accepted: 03/22/2018] [Indexed: 11/09/2022] Open
Abstract
Somatic cell nuclear transfer (SCNT) is a very promising cloning technique for reconstruction of endangered animals. The aim of the present research is to implement the interspecific SCNT (iSCNT) technique to sturgeon; one fish family bearing some of the most critically endangered species. We transplanted single cells enzymatically isolated from a dissociated fin-fragment of the Russian sturgeon (Acipenser gueldenstaedtii) into non-enucleated eggs of the sterlet (Acipenser ruthenus), two species bearing different ploidy (4n and 2n, respectively). Up to 6.7% of the transplanted eggs underwent early development, and one feeding larva (0.5%) was successfully produced. Interestingly, although this transplant displayed tetraploidism (4n) as the donor species, the microsatellite and species-specific analysis showed recipient-exclusive homozygosis without any donor markers. Namely, with regards to this viable larva, host genome duplication occurred twice to form tetraploidism during its early development, probably due to iSCNT manipulation. The importance of this first attempt is to apply iSCNT in sturgeon species, establishing the crucial first steps by adjusting the cloning-methodology in sturgeon's biology. Future improvements in sturgeon's cloning are necessary for providing with great hope in sturgeon's reproduction.
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Affiliation(s)
- Effrosyni Fatira
- Faculty of Fisheries and Protection of Waters, South Bohemian Research Center of Aquaculture and Biodiversity of Hydrocenoses, University of South Bohemia in Ceske Budejovice, Zátiší 728/II, 389 25, Vodňany, Czech Republic.
| | - Miloš Havelka
- Faculty of Fisheries and Protection of Waters, South Bohemian Research Center of Aquaculture and Biodiversity of Hydrocenoses, University of South Bohemia in Ceske Budejovice, Zátiší 728/II, 389 25, Vodňany, Czech Republic
- Faculty and Graduate School of Fisheries Sciences, Hokkaido University, 3-1-1 Minato, Hakodate, Hokkaido, 041-8611, Japan
| | - Catherine Labbé
- INRA, Fish Physiology and Genomics department, Campus de Beaulieu, F-35000, Rennes, France
| | - Alexandra Depincé
- INRA, Fish Physiology and Genomics department, Campus de Beaulieu, F-35000, Rennes, France
| | - Viktoriia Iegorova
- Faculty of Fisheries and Protection of Waters, South Bohemian Research Center of Aquaculture and Biodiversity of Hydrocenoses, University of South Bohemia in Ceske Budejovice, Zátiší 728/II, 389 25, Vodňany, Czech Republic
| | - Martin Pšenička
- Faculty of Fisheries and Protection of Waters, South Bohemian Research Center of Aquaculture and Biodiversity of Hydrocenoses, University of South Bohemia in Ceske Budejovice, Zátiší 728/II, 389 25, Vodňany, Czech Republic
| | - Taiju Saito
- Faculty of Fisheries and Protection of Waters, South Bohemian Research Center of Aquaculture and Biodiversity of Hydrocenoses, University of South Bohemia in Ceske Budejovice, Zátiší 728/II, 389 25, Vodňany, Czech Republic
- Nishiura Station, South Ehime Fisheries Research Center, Ehime University, Uchidomari, Ainan, Ehime, 798-4206, Japan
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7
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Autotetraploid cell line induced by SP600125 from crucian carp and its developmental potentiality. Sci Rep 2016; 6:21814. [PMID: 26898354 PMCID: PMC4761888 DOI: 10.1038/srep21814] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2015] [Accepted: 02/01/2016] [Indexed: 12/21/2022] Open
Abstract
Polyploidy has many advantages over diploidy, such as rapid growth, sterility, and disease resistance, and has been extensively applied in agriculture and aquaculture. Though generation of new polyploids via polyploidization has been achieved in plants by different ways, it is comparatively rare in animals. In this article, by a chemical compound, SP600125, polyploidization is induced in fish cells in vitro, and a stable autotetraploid cell line has been generated from diploid fibroblast cells of crucian carp. As a c-Jun N-terminal kinase (Jnk) inhibitor, SP600125 does not function during the induction process of polyploidization. Instead, the p53 signal pathway might be involved. Using the SP600125-induced tetraploid cells and eggs of crucian carp as the donors and recipients, respectively, nuclear transplantation was conducted such that tetraploid embryos were obtained. It suggests that combining polyploidization and the somatic cell nuclear transfer technique (SCNT) is an efficient way to generate polyploidy, and the presented method in this research for generating the tetraploid fish from diploid fish can provide a useful platform for polyploid breeding.
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8
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Novel method for analysis of allele specific expression in triploid Oryzias latipes reveals consistent pattern of allele exclusion. PLoS One 2014; 9:e100250. [PMID: 24945156 PMCID: PMC4063754 DOI: 10.1371/journal.pone.0100250] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2014] [Accepted: 05/22/2014] [Indexed: 11/30/2022] Open
Abstract
Assessing allele-specific gene expression (ASE) on a large scale continues to be a technically challenging problem. Certain biological phenomena, such as X chromosome inactivation and parental imprinting, affect ASE most drastically by completely shutting down the expression of a whole set of alleles. Other more subtle effects on ASE are likely to be much more complex and dependent on the genetic environment and are perhaps more important to understand since they may be responsible for a significant amount of biological diversity. Tools to assess ASE in a diploid biological system are becoming more reliable. Non-diploid systems are, however, not uncommon. In humans full or partial polyploid states are regularly found in both healthy (meiotic cells, polynucleated cell types) and diseased tissues (trisomies, non-disjunction events, cancerous tissues). In this work we have studied ASE in the medaka fish model system. We have developed a method for determining ASE in polyploid organisms from RNAseq data and we have implemented this method in a software tool set. As a biological model system we have used nuclear transplantation to experimentally produce artificial triploid medaka composed of three different haplomes. We measured ASE in RNA isolated from the livers of two adult, triploid medaka fish that showed a high degree of similarity. The majority of genes examined (82%) shared expression more or less evenly among the three alleles in both triploids. The rest of the genes (18%) displayed a wide range of ASE levels. Interestingly the majority of genes (78%) displayed generally consistent ASE levels in both triploid individuals. A large contingent of these genes had the same allele entirely suppressed in both triploids. When viewed in a chromosomal context, it is revealed that these genes are from large sections of 4 chromosomes and may be indicative of some broad scale suppression of gene expression.
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9
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Bubenshchikova E, Kaftanovskaya E, Adachi T, Hashimoto H, Kinoshita M, Wakamatsu Y. A protocol for adult somatic cell nuclear transfer in medaka fish (Oryzias latipes) with a high rate of viable clone formation. Cell Reprogram 2013; 15:520-30. [PMID: 24219575 DOI: 10.1089/cell.2013.0004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Previously, we successfully generated fully grown, cloned medaka (the Japanese rice fish, Oryzias latipes) using donor nuclei from primary culture cells of adult caudal fin tissue and nonenucleated recipient eggs that were heat shock-treated to induce diploidization of the nuclei. However, the mechanism of clone formation using this method is unknown, and the rate of adult clone formation is not high enough for studies in basic and applied sciences. To gain insight into the mechanism and increase the success rate of this method of clone formation, we tested two distinct nuclear transfer protocols. In one protocol, the timing of transfer of donor nuclei was changed, and in the other, the size of the donor cells was changed; each protocol was based on our original methodology. Ultimately, we obtained an unexpectedly high rate of adult clone formation using the protocol that differed with respect to the timing of donor nuclei transfer. Specifically, 17% of the transplants that developed to the blastula stage ultimately developed into adult clones. The success rate with this method was 13 times higher than that obtained using the original method. Analyses focusing on the reasons for this high success rate of clone formation will help to elucidate the mechanism of clone formation that occurs with this method.
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Affiliation(s)
- Ekaterina Bubenshchikova
- 1 Laboratory of Freshwater Fish Stocks, Bioscience and Biotechnology Center, Nagoya University , Nagoya, 464-8601, Japan
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10
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Froschauer A, Sprott D, Gerwien F, Henker Y, Rudolph F, Pfennig F, Gutzeit HO. Effective generation of transgenic reporter and gene trap lines of the medaka (Oryzias latipes) using the Ac/Ds transposon system. Transgenic Res 2011; 21:149-62. [PMID: 21533666 DOI: 10.1007/s11248-011-9514-x] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2010] [Accepted: 04/15/2011] [Indexed: 01/04/2023]
Abstract
In model teleost fishes like the medaka and the zebrafish many genes which have been identified in genome sequencing projects await their functional characterization. Techniques for the effective generation of transgenic animals are a prerequisite for this challenging task, and, due to their transparency, fish offer the possibility to combine the use of fluorescent proteins and developmental analysis in vivo. Here we describe the application of the Ac/Ds transposon system to generate transgenic medaka reporter and gene trap lines. We determined a germline transmission rate of 30% in our experiments using constructs ranging in size from 1.8 to 6 kilobase pairs. The genomic integration site of the Ds-elements can be easily identified which is an important feature for gene trap mutagenesis experiments and similar approaches. We constructed gene trap vectors with functional elements of medaka sequences that produce in frame fusions of the endogenous sequence to EGFP. These vectors mimic endogenous expression of the trapped allele in transgenic animals and are capable to interfere with the expression of the wild type allele in the homozygous individuals.
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11
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Hattori M, Hashimoto H, Bubenshchikova E, Wakamatsu Y. Nuclear transfer of embryonic cell nuclei to non-enucleated eggs in zebrafish, Danio rerio. Int J Biol Sci 2011; 7:460-8. [PMID: 21547063 PMCID: PMC3088288 DOI: 10.7150/ijbs.7.460] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2011] [Accepted: 04/10/2011] [Indexed: 12/01/2022] Open
Abstract
We previously established a novel method for nuclear transfer in medaka (Oryzias latipes) using non-enucleated, diploidized eggs as recipients for adult somatic cell nuclei. Here we report the first attempt to apply this method to another fish species. To examine suitability of using non-enucleated eggs as recipients for nuclear transfer in the zebrafish (Danio rerio), we transferred blastula cell nuclei from a wild-type donor strain to non-enucleated, unfertilized eggs from a golden recipient strain. As a result, 31 of 184 (16.8%) operated eggs developed normally and reached the adult stage. Twenty-eight (15.2%) of these transplants showed wild-type phenotype and the remaining three (1.6%) were golden. Except for one individual that exhibited diploid/tetraploid mosaicism, all of the wild-type nuclear transplants were either triploid or diploid. While all of 19 triploid transplants were infertile, a total of six transplants (21.4%) were fertile (five of the eight diploid transplants and one transplant exhibiting ploidy mosaicism). Except for one diploid individual, all of the fertile transplants transferred both the wild-type golden gene allele (slc24a5) as well as the phenotype, the wild-type body color, to their F1 and F2 progeny in a typical Mendelian fashion. PCR analysis of slc24a5 suggested that triploidy originated from a fused nucleus in the diploid donor and haploid recipient nuclei, and that the sole origin of diploidy was the diploid donor nucleus. The results of the present study demonstrated the suitability of using non-enucleated eggs as recipients for nuclear transfer experiments in zebrafish.
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Affiliation(s)
- Manabu Hattori
- Laboratory of Freshwater Fish Stocks, Bioscience and Biotechnology Center, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8601, Japan
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12
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Bail PYL, Depince A, Chenais N, Mahe S, Maisse G, Labbe C. Optimization of somatic cell injection in the perspective of nuclear transfer in goldfish. BMC DEVELOPMENTAL BIOLOGY 2010; 10:64. [PMID: 20529309 PMCID: PMC2889862 DOI: 10.1186/1471-213x-10-64] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/18/2009] [Accepted: 06/08/2010] [Indexed: 12/31/2022]
Abstract
Background Nuclear transfer has the potential to become one strategy for fish genetic resources management, by allowing fish reconstruction from cryopreserved somatic cells. Survival rates after nuclear transfer are still low however. The part played by unsuitable handling conditions is often questioned, but the different steps in the procedure are difficult to address separately. In this work led on goldfish (Carassius auratus), the step of somatic cells injection was explored. Non-enucleated metaphase II oocytes were used as a template to explore the toxicity of the injection medium, to estimate the best location where the cell should be injected, and to assess the delay necessary between cell injection and oocyte activation. Results Trout coelomic fluid was the most suitable medium to maintain freshly spawned oocytes at the metaphase II stage during oocyte manipulation. Oocytes were then injected with several media to test their toxicity on embryo development after fertilization. Trout coelomic fluid was the least toxic medium after injection, and the smallest injected volume (10 pL) allowed the same hatching rates as the non injected controls (84.8% ± 23). In somatic cell transfer experiments using non enucleated metaphase II oocytes as recipient, cell plasma membrane was ruptured within one minute after injection. Cell injection at the top of the animal pole in the oocyte allowed higher development rates than cell injection deeper within the oocyte (respectively 59% and 23% at mid-blastula stage). Embryo development rates were also higher when oocyte activation was delayed for 30 min after cell injection than when activation was induced without delay (respectively 72% and 48% at mid-blastula stage). Conclusions The best ability of goldfish oocytes to sustain embryo development was obtained when the carrier medium was trout coelomic fluid, when the cell was injected close to the animal pole, and when oocyte activation was induced 30 min after somatic cell injection. Although the experiments were not designed to produce characterized clones, application of these parameters to somatic cell nuclear transfer experiments in enucleated metaphase II oocytes is expected to improve the quality of the reconstructed embryos.
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Affiliation(s)
- Pierre-Yves Le Bail
- INRA, Cryopreservation and Regeneration of Fish, UR1037 SCRIBE, Campus de Beaulieu, F-35 000 Rennes, France
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Definition of three somatic adult cell nuclear transplant methods in zebrafish (Danio rerio): before, during and after egg activation by sperm fertilization. ZYGOTE 2009; 18:33-9. [DOI: 10.1017/s0967199409990049] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
SummaryZebrafish somatic nuclear transplant has only been attempted using preactivated eggs. In this work, three methods to carry out the nuclear transplant using adult cells before, during and after the egg activation/fertilization were developed in zebrafish with the aim to be used in reprogramming studies. The donor nucleus from somatic adult cells was inserted: (method A) in the central region of the egg and subsequently fertilized; (method B) in the incipient animal pole at the same time that the egg was fertilized; and (method C) in the completely defined animal pole after fertilization. Larval and adult specimens were obtained using the three methods. Technical aspects related to temperature conditions, media required, egg activation/fertilization, post-ovulatory time of the transplant, egg aging, place of the donor nucleus injection in each methodology are presented. In conclusion, the technical approach developed in this work can be used in reprogramming studies.
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Bubenshchikova E, Kaftanovskaya E, Hattori M, Kinoshita M, Adachi T, Hashimoto H, Ozato K, Wakamatsu Y. Nuclear Transplants from Adult Somatic Cells Generated by a Novel Method Using Diploidized Eggs as Recipients in Medaka Fish (Oryzias latipes). CLONING AND STEM CELLS 2008; 10:443-52. [DOI: 10.1089/clo.2008.0014] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Ekaterina Bubenshchikova
- Laboratory of Freshwater Fish Stocks, Bioscience and Biotechnology Center, Nagoya University, Nagoya 464-8601, Japan
| | - Elena Kaftanovskaya
- Laboratory of Freshwater Fish Stocks, Bioscience and Biotechnology Center, Nagoya University, Nagoya 464-8601, Japan
| | - Manabu Hattori
- Laboratory of Freshwater Fish Stocks, Bioscience and Biotechnology Center, Nagoya University, Nagoya 464-8601, Japan
| | - Masato Kinoshita
- Division of Applied Biosciences, Graduate School of Agriculture, Kyoto University, Kyoto 606-8502, Japan
| | - Tomoko Adachi
- Laboratory of Freshwater Fish Stocks, Bioscience and Biotechnology Center, Nagoya University, Nagoya 464-8601, Japan
| | - Hisashi Hashimoto
- Laboratory of Freshwater Fish Stocks, Bioscience and Biotechnology Center, Nagoya University, Nagoya 464-8601, Japan
| | - Kenjiro Ozato
- Laboratory of Freshwater Fish Stocks, Bioscience and Biotechnology Center, Nagoya University, Nagoya 464-8601, Japan
| | - Yuko Wakamatsu
- Laboratory of Freshwater Fish Stocks, Bioscience and Biotechnology Center, Nagoya University, Nagoya 464-8601, Japan
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15
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Wakamatsu Y. Novel method for the nuclear transfer of adult somatic cells in medaka fish (Oryzias latipes): Use of diploidized eggs as recipients. Dev Growth Differ 2008; 50:427-36. [DOI: 10.1111/j.1440-169x.2008.01050.x] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
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Bubenshchikova E, Kaftanovskaya E, Motosugi N, Fujimoto T, Arai K, Kinoshita M, Hashimoto H, Ozato K, Wakamatsu Y. Diploidized eggs reprogram adult somatic cell nuclei to pluripotency in nuclear transfer in medaka fish (Oryzias latipes). Dev Growth Differ 2007; 49:699-709. [PMID: 17868280 DOI: 10.1111/j.1440-169x.2007.00963.x] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Reprogramming of adult somatic cell nuclei to pluripotency has been unsuccessful in non-mammalian animals, primarily because of chromosomal aberrations in nuclear transplants, which are considered to be caused by asynchrony between the cell cycles of the recipient egg and donor nucleus. In order to normalize the chromosomal status, we used diploidized eggs by retention of second polar body release, instead of enucleated eggs, as recipients in nuclear transfer of primary culture cells from the caudal fin of adult green fluorescent protein gene (GFP) transgenic medaka fish (Oryzias latipes). We found that 2.7% of the reconstructed embryos grew into adults that expressed GFP in various tissues in the same pattern as in the donor fish. Moreover, these fish were diploid, fertile and capable of passing the marker gene to the next generation in Mendelian fashion. We hesitate to call these fish 'clones' because we used non-enucleated eggs as recipients; in effect, they may be chimeras consisting of cells derived from diploid recipient nuclei and donor nuclei. In either case, fish adult somatic cell nuclei were reprogrammed to pluripotency and differentiated into a variety of cell types including germ cells via the use of diploidized recipient eggs.
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Affiliation(s)
- Ekaterina Bubenshchikova
- Laboratory of Freshwater Fish Stocks, Bioscience and Biotechnology Center, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8601, Japan
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Kaftanovskaya E, Motosugi N, Kinoshita M, Ozato K, Wakamatsu Y. Ploidy mosaicism in well-developed nuclear transplants produced by transfer of adult somatic cell nuclei to nonenucleated eggs of medaka (Oryzias latipes). Dev Growth Differ 2007; 49:691-8. [PMID: 17868281 DOI: 10.1111/j.1440-169x.2007.00962.x] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Chromosomal abnormalities such as ploidy mosaicism have constituted a major obstacle to the successful nuclear transfer of adult somatic cell nuclei in lower vertebrates to date. Euploid mosaicism has been reported previously in well-developed amphibian transplants. Here, we investigated ploidy mosaicisms in well-developed transplants of adult somatic cell nuclei in medaka fish (Oryzias latipes). Donor nuclei from primary cultured cells from the adult caudal fin of a transgenic strain carrying the green fluorescent protein gene (GFP) were transferred to recipient nonenucleated eggs of a wild-type strain to produce 662 transplants. While some of the transplants developed beyond the body formation stage and several hatched, all exhibited varying degrees of abnormal morphology, limited growth and subsequent death. Twenty-one transplants, 19 embryos and two larvae, were selected for chromosomal analysis; all were well-developed 6-day-old or later embryonic stages exhibiting slight morphological abnormalities and the same pattern of GFP expression as that of the donor strain. In addition, all exhibited various levels of euploid mosaicism with haploid-diploid, haploid-triploid or haploid-diploid-triploid chromosome sets. No visible chromosomal abnormalities were observed. Thus, euploid mosaicism similar to that observed in amphibians was confirmed in well-developed nuclear transplants of fish.
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Affiliation(s)
- Elena Kaftanovskaya
- Laboratory of Freshwater Fish Stocks, Bioscience and Biotechnology Center, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8601, Japan
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