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Vitrification of the ovarian tissue in sturgeons. Theriogenology 2023; 196:18-24. [PMID: 36375212 DOI: 10.1016/j.theriogenology.2022.11.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2022] [Revised: 10/16/2022] [Accepted: 11/05/2022] [Indexed: 11/09/2022]
Abstract
The aim of this study was to test whether vitrification of sterlet Acipenser ruthenus and Russian sturgeon Acipenser gueldenstaedtii ovarian tissue through needle-immersed vitrification (NIV) is an efficient strategy for the preservation of oogonia (OOG) in order to supplement the current conservation efforts for these endangered fish species. Histological analyses of the gonads displayed that the ovaries of both species were immature and contained predominantly OOG and primary oocytes. The germline origin of these cells was verified by localization of the vasa protein through immunocytochemistry. NIV protocol was optimized by testing different equilibration (ES) and vitrification solutions (VS) containing various concentrations of dimethyl sulfoxide (Me2SO), propylene glycol (PG) or methanol (MeOH). In sterlet, the highest average viability (55.7 ± 11.5%) was obtained by using a combination of 1.5 M PG and 1.5 M Me2SO in the ES, and 1.5 M MeOH and 5.5 M Me2SO in the VS. In Russian sturgeon, the highest average viability (49.4 ± 17.1%) was obtained by using a combination of 1.5 M MeOH and 1.5 M Me2SO in the ES, and 3 M PG and 3 M Me2SO in the VS. To test whether vitrified/warmed OOG are functional, we have conducted an intra-specific transplantation assay to verify whether transplanted sterlet OOG will colonize the gonads of recipient fish. Fluorescently labelled cells were detected within recipient gonads at 2 and 3 months post-fertilization (mpf). Colonization rates of vitrified/warmed OOG (70% at 2 mpf and 61% at 3 mpf) were similar to those of fresh OOG (80% at 2 mpf and 70% at 3 mpf). This study has demonstrated that vitrification of ovarian tissue is an effective method for the preservation of OOG, and that the vitrified/warmed cells are functional and are able to colonize recipient gonads after transplantation similarly to the fresh cells. Since the vitrification procedure displayed in this study is simple and does not require complex and expensive laboratory equipment, it can be readily applied in field conditions, and therefore it can be invaluable for the conservation efforts of the critically endangered sturgeon species. However, care needs to be taken that despite the research conducted so far, donor-derived progeny was not yet obtained in sturgeons.
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Káldy J, Patakiné Várkonyi E, Fazekas GL, Nagy Z, Sándor ZJ, Bogár K, Kovács G, Molnár M, Lázár B, Goda K, Gyöngy Z, Ritter Z, Nánási P, Horváth Á, Ljubobratović U. Effects of Hydrostatic Pressure Treatment of Newly Fertilized Eggs on the Ploidy Level and Karyotype of Pikeperch Sander lucioperca (Linnaeus, 1758). Life (Basel) 2021; 11:life11121296. [PMID: 34947827 PMCID: PMC8708264 DOI: 10.3390/life11121296] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2021] [Revised: 11/19/2021] [Accepted: 11/22/2021] [Indexed: 12/03/2022] Open
Abstract
We studied the effect of different magnitudes (7000 PSI (48.26 MPa), 8000 PSI (55.16 MPa), and 9000 PSI (62.05 MPa)) of hydrostatic pressure on the ploidy of pikeperch larvae. Pressure shock was applied 5 min after the fertilization of eggs at a water temperature of 14.8 ± 1 °C. A 7000 PSI pressure shock was applied for 10 or 20 min, while 8000 and 9000 PSI treatments lasted for 10 min. Each treatment with its respective control was completed in triplicate, where different females’ eggs served as a replicate. In the treatment groups exposed to 7000 PSI for 10 min, only diploid and triploid larvae were identified, while 2n/3n mosaic individuals were found after a 20-min exposure to a 7000 PSI pressure shock. The application of 8000 or 9000 PSI pressure shocks resulted in only triploid and mosaic individuals. Among larvae from eggs treated with 8000 PSI, three mosaic individuals with 2n/3n karyotype were identified (4.0 ± 6.9%), while a single (2.0 ± 3.5%) 1n/3n mosaic individual was found in the 9000 PSI-treated group. To our knowledge, this is the first report that demonstrates the induction of a haplo-triploid karyotype by hydrostatic pressure shock in teleost fish. The dominance of triploid individuals with a reasonable survival rate (36.8 ± 26.1%) after 8000 PSI shock supports the suitability of the hydrostatic pressure treatment of freshly fertilized eggs for triploid induction in pikeperch.
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Affiliation(s)
- Jenő Káldy
- Research Center of Fisheries and Aquaculture, Institute of Aquaculture and Environmental Safety, Hungarian University of Agriculture and Life Sciences, H-2100 Gödöllő, Hungary; (G.L.F.); (Z.N.); (Z.J.S.); (K.B.); (G.K.); (U.L.)
- Correspondence:
| | - Eszter Patakiné Várkonyi
- National Centre for Biodiversity and Gene Conservation, Institute for Farm Animal Gene Conservation, H-2100 Gödöllő, Hungary; (E.P.V.); (M.M.); (B.L.)
| | - Georgina Lea Fazekas
- Research Center of Fisheries and Aquaculture, Institute of Aquaculture and Environmental Safety, Hungarian University of Agriculture and Life Sciences, H-2100 Gödöllő, Hungary; (G.L.F.); (Z.N.); (Z.J.S.); (K.B.); (G.K.); (U.L.)
- Doctoral School of Animal Biotechnology and Animal Science, Hungarian University of Agriculture and Life Sciences, H-2100 Gödöllő, Hungary
| | - Zoltán Nagy
- Research Center of Fisheries and Aquaculture, Institute of Aquaculture and Environmental Safety, Hungarian University of Agriculture and Life Sciences, H-2100 Gödöllő, Hungary; (G.L.F.); (Z.N.); (Z.J.S.); (K.B.); (G.K.); (U.L.)
| | - Zsuzsanna J. Sándor
- Research Center of Fisheries and Aquaculture, Institute of Aquaculture and Environmental Safety, Hungarian University of Agriculture and Life Sciences, H-2100 Gödöllő, Hungary; (G.L.F.); (Z.N.); (Z.J.S.); (K.B.); (G.K.); (U.L.)
| | - Katalin Bogár
- Research Center of Fisheries and Aquaculture, Institute of Aquaculture and Environmental Safety, Hungarian University of Agriculture and Life Sciences, H-2100 Gödöllő, Hungary; (G.L.F.); (Z.N.); (Z.J.S.); (K.B.); (G.K.); (U.L.)
| | - Gyula Kovács
- Research Center of Fisheries and Aquaculture, Institute of Aquaculture and Environmental Safety, Hungarian University of Agriculture and Life Sciences, H-2100 Gödöllő, Hungary; (G.L.F.); (Z.N.); (Z.J.S.); (K.B.); (G.K.); (U.L.)
- Festetics György Doctoral School, Hungarian University of Agriculture and Life Sciences, H-2100 Gödöllő, Hungary
| | - Mariann Molnár
- National Centre for Biodiversity and Gene Conservation, Institute for Farm Animal Gene Conservation, H-2100 Gödöllő, Hungary; (E.P.V.); (M.M.); (B.L.)
- Doctoral School of Animal Biotechnology and Animal Science, Hungarian University of Agriculture and Life Sciences, H-2100 Gödöllő, Hungary
| | - Bence Lázár
- National Centre for Biodiversity and Gene Conservation, Institute for Farm Animal Gene Conservation, H-2100 Gödöllő, Hungary; (E.P.V.); (M.M.); (B.L.)
- Animal Biotechnology Department, Institute of Genetics and Biotechnology, Hungarian University of Agriculture and Life Sciences, H-2100 Gödöllő, Hungary
| | - Katalin Goda
- Department of Biophysics and Cell Biology, Faculty of Medicine, University of Debrecen, H-4032 Debrecen, Hungary; (K.G.); (Z.G.); (Z.R.); (P.N.J.)
- Doctoral School of Molecular Cell and Immune Biology, University of Debrecen, H-4032 Debrecen, Hungary
| | - Zsuzsanna Gyöngy
- Department of Biophysics and Cell Biology, Faculty of Medicine, University of Debrecen, H-4032 Debrecen, Hungary; (K.G.); (Z.G.); (Z.R.); (P.N.J.)
- Doctoral School of Molecular Cell and Immune Biology, University of Debrecen, H-4032 Debrecen, Hungary
| | - Zsuzsanna Ritter
- Department of Biophysics and Cell Biology, Faculty of Medicine, University of Debrecen, H-4032 Debrecen, Hungary; (K.G.); (Z.G.); (Z.R.); (P.N.J.)
- Doctoral School of Molecular Cell and Immune Biology, University of Debrecen, H-4032 Debrecen, Hungary
| | - Péter Nánási
- Department of Biophysics and Cell Biology, Faculty of Medicine, University of Debrecen, H-4032 Debrecen, Hungary; (K.G.); (Z.G.); (Z.R.); (P.N.J.)
- Doctoral School of Molecular Cell and Immune Biology, University of Debrecen, H-4032 Debrecen, Hungary
| | - Ákos Horváth
- Department of Aquaculture, Institute of Aquaculture and Environmental Safety, Hungarian University of Agriculture and Life Sciences, H-2100 Gödöllő, Hungary;
| | - Uroš Ljubobratović
- Research Center of Fisheries and Aquaculture, Institute of Aquaculture and Environmental Safety, Hungarian University of Agriculture and Life Sciences, H-2100 Gödöllő, Hungary; (G.L.F.); (Z.N.); (Z.J.S.); (K.B.); (G.K.); (U.L.)
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Cryopreservation and Transplantation of Spermatogonial Stem Cells. Methods Mol Biol 2021. [PMID: 33606221 DOI: 10.1007/978-1-0716-0970-5_4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register]
Abstract
Cryopreservation as a method that enables long-term storage of biological material has long been used for the conservation of valuable zebrafish genetic resources. However, currently, only spermatozoa of zebrafish can be successfully cryopreserved, while protocols for cryopreservation of eggs and embryos have not yet been fully developed. Transplantation of germline stem cells (GSCs) has risen as a favorable method that can bypass the current problem in cryopreservation of female genetic resources and can lead to reconstitution of fish species and lines through surrogate production. Here, we describe essential steps needed for the cryopreservation of spermatogonial stem cells (SSCs) and their utilization in the conservation of zebrafish genetic resources through SSC transplantation and surrogate production.
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Marinović Z, Li Q, Lujić J, Iwasaki Y, Csenki Z, Urbányi B, Yoshizaki G, Horváth Á. Preservation of zebrafish genetic resources through testis cryopreservation and spermatogonia transplantation. Sci Rep 2019; 9:13861. [PMID: 31554831 PMCID: PMC6761286 DOI: 10.1038/s41598-019-50169-1] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2018] [Accepted: 08/24/2019] [Indexed: 12/16/2022] Open
Abstract
Zebrafish is one of the most commonly used model organisms in biomedical, developmental and genetic research. The production of several thousands of transgenic lines is leading to difficulties in maintaining valuable genetic resources as cryopreservation protocols for eggs and embryos are not yet developed. In this study, we utilized testis cryopreservation (through both slow-rate freezing and vitrification) and spermatogonia transplantation as effective methods for long-term storage and line reconstitution in zebrafish. During freezing, utilization of 1.3 M of dimethyl sulfoxide (Me2SO) displayed the highest spermatogonia viability (~60%), while sugar and protein supplementation had no effects. Needle-immersed vitrification also yielded high spermatogonia viability rates (~50%). Both optimal slow-rate freezing and vitrification protocols proved to be reproducible in six tested zebrafish lines after displaying viability rates of >50% in all lines. Both fresh and cryopreserved spermatogonia retained their ability to colonize the recipient gonads after intraperitoneal transplantation of vasa::egfp and actb:yfp spermatogonia into wild-type AB recipient larvae. Colonization rate was significantly higher in dnd-morpholino sterilized recipients than in non-sterilized recipients. Lastly, wild-type recipients produced donor-derived sperm and donor-derived offspring through natural spawning. The method demonstrated in this study can be used for long-term storage of valuable zebrafish genetic resources and for reconstitution of whole zebrafish lines which will greatly improve the current preservation practices.
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Affiliation(s)
- Zoran Marinović
- Department of Aquaculture, Szent István University, Páter Károly u. 1., H-2100, Gödöllő, Hungary
| | - Qian Li
- Department of Marine Biosciences, Tokyo University of Marine Science and Technology, 108-8477, Tokyo, Japan
| | - Jelena Lujić
- Department of Aquaculture, Szent István University, Páter Károly u. 1., H-2100, Gödöllő, Hungary.
| | - Yoshiko Iwasaki
- Department of Marine Biosciences, Tokyo University of Marine Science and Technology, 108-8477, Tokyo, Japan
| | - Zsolt Csenki
- Department of Aquaculture, Szent István University, Páter Károly u. 1., H-2100, Gödöllő, Hungary
| | - Béla Urbányi
- Department of Aquaculture, Szent István University, Páter Károly u. 1., H-2100, Gödöllő, Hungary
| | - Goro Yoshizaki
- Department of Marine Biosciences, Tokyo University of Marine Science and Technology, 108-8477, Tokyo, Japan
| | - Ákos Horváth
- Department of Aquaculture, Szent István University, Páter Károly u. 1., H-2100, Gödöllő, Hungary
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Franěk R, Marinović Z, Lujić J, Urbányi B, Fučíková M, Kašpar V, Pšenička M, Horváth Á. Cryopreservation and transplantation of common carp spermatogonia. PLoS One 2019; 14:e0205481. [PMID: 30998742 PMCID: PMC6472724 DOI: 10.1371/journal.pone.0205481] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2018] [Accepted: 04/07/2019] [Indexed: 11/18/2022] Open
Abstract
Common carp (Cyprinus carpio) is one of the most cultured fish species over the world with many different breeds and plenty of published protocols for sperm cryopreservation. However, data regarding preservation of gonadal tissue and surrogate production is still missing. A protocol for freezing common carp spermatogonia was developed through varying different factors along a set of serial subsequent experiments. Among the six cryoprotectants tested, the best survival was achieved with dimethyl sulfoxide (Me2SO). In the next experiment, a wide range of cooling rates (0.5–10°C/min) and different concentrations of Me2SO were tested resulting in the highest survival achieved using 2 M Me2SO and cooling rate of -1°C/min. When testing different tissue sizes and incubation times in the cryomedia, the highest viability was observed when incubating 100 mg tissue fragments for 30 min. Finally, sugar supplementation did not yield significant differences. When testing different equilibration (ES) and vitrification solutions (VS) used for needle-immersed vitrification, no significant differences were observed between the tested groups. Additionally, varied exposure time to VS did not improve the vitrification outcome where the viability was 4-fold lower than that of freezing. The functionality of cryopreserved cells was tested by interspecific transplantation into sterilized goldfish recipients. The exogenous origin of the germ cells in gonads of goldfish recipient was confirmed by molecular markers and incorporation rate was over 40% at 3 months post-transplantation. Results of this study can serve for long-term preservation of germplasm in carp which can be recovered in a surrogate recipient.
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Affiliation(s)
- Roman Franěk
- University of South Bohemia in České Budějovice, Faculty of Fisheries and Protection of Waters, South Bohemian Research Center of Aquaculture and Biodiversity of Hydrocenoses, Czech Republic
- * E-mail:
| | - Zoran Marinović
- Department of Aquaculture, Szent István University, Gödöllö, Hungary
| | - Jelena Lujić
- Department of Aquaculture, Szent István University, Gödöllö, Hungary
| | - Béla Urbányi
- Department of Aquaculture, Szent István University, Gödöllö, Hungary
| | - Michaela Fučíková
- University of South Bohemia in České Budějovice, Faculty of Fisheries and Protection of Waters, South Bohemian Research Center of Aquaculture and Biodiversity of Hydrocenoses, Czech Republic
| | - Vojtěch Kašpar
- University of South Bohemia in České Budějovice, Faculty of Fisheries and Protection of Waters, South Bohemian Research Center of Aquaculture and Biodiversity of Hydrocenoses, Czech Republic
| | - Martin Pšenička
- University of South Bohemia in České Budějovice, Faculty of Fisheries and Protection of Waters, South Bohemian Research Center of Aquaculture and Biodiversity of Hydrocenoses, Czech Republic
| | - Ákos Horváth
- Department of Aquaculture, Szent István University, Gödöllö, Hungary
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