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Ledesma AV, Van Eenennaam AL. Global status of gene edited animals for agricultural applications. Vet J 2024; 305:106142. [PMID: 38788996 DOI: 10.1016/j.tvjl.2024.106142] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2024] [Revised: 05/21/2024] [Accepted: 05/21/2024] [Indexed: 05/26/2024]
Abstract
Gene editing (GnEd) involves using a site-directed nuclease to introduce a double-strand break (DSB) at a targeted location in the genome. A literature search was performed on the use of GnEd in animals for agricultural applications. Data was extracted from 212 peer-reviewed articles that described the production of at least one living animal employing GnEd technologies for agricultural purposes. The most common GnEd system reported was CRISPR/Cas9, and the most frequent type of edit was the unguided insertion or deletion resulting from the repair of the targeted DSB leading to a knock-out (KO) mutation. Animal groups included in the reviewed papers were ruminants (cattle, sheep, goats, n=63); monogastrics (pigs and rabbits, n=60); avian (chicken, duck, quail, n=17); aquatic (many species, n=65), and insects (honeybee, silkworm, n=7). Yield (32%), followed by reproduction (21%) and disease resistance (17%) were the most commonly targeted traits. Over half of the reviewed papers had Chinese first-authorship. Several countries, including Argentina, Australia, Brazil, Colombia and Japan, have adopted a regulatory policy that considers KO mutations introduced following GnEd DSB repair as akin to natural genetic variation, and therefore treat these GnEd animals analogously to those produced using conventional breeding. This approach has resulted in a non-GMO determination for a small number of GnEd food animal applications, including three species of GnEd KO fast-growing fish, (red sea bream, olive flounder and tiger pufferfish in Japan), KO fish and cattle in Argentina and Brazil, and porcine reproductive and respiratory syndrome (PRRS) virus disease-resistant KO pigs in Colombia.
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Affiliation(s)
- Alba V Ledesma
- Department of Animal Science, University of California, Davis, CA 95616, USA
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Yahiro I, Sato O, Mohapatra S, Mukai K, Toyoda A, Itoh T, Matsuyama M, Chakraborty T, Ohta K. SDF-1/CXCR4 signal is involved in the induction of Primordial Germ Cell migration in a model marine fish, Japanese anchovy (Engraulis japonicus). Gen Comp Endocrinol 2024; 351:114476. [PMID: 38408712 DOI: 10.1016/j.ygcen.2024.114476] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/05/2023] [Revised: 02/16/2024] [Accepted: 02/19/2024] [Indexed: 02/28/2024]
Abstract
Primordial germ cells (PGCs) are pivotal for gonadal development and reproductive success. Though artificial induction of sterility by targeting PGCs are gaining popularity due to its advantages in fish surrogacy and biodiversity management, it is often skill and time intensive. In this study, we have focused on understanding the role of PGCs and the chemotactic SDF-1/CXCR4 signaling on gonad development of Japanese anchovy (JA, Engraulis japonicus), an upcoming marine model organism with eco-commercial values, with an aim to develop a novel, easy, and versatile gonad sterilization method. Our data showed that PGC migration related genes, i.e., sdf-1a, sdf-1b, cxcr4a, cxcr4b and vasa, are phylogenetically closer relatives of respective herring (Clupea harengus) and zebrafish (Danio rerio) homolog. Subsequently, PGC marking and live tracing experiments confirmed that PGC migration in JA initiates from 16 hours post fertilization (hpf) followed by PGC settlement in the gonadal ridge at 44 hpf. We found that overexpression of zebrafish sdf-1a mRNA in the germ cell suppresses cxcr4a and increases cxcr4b transcription at 8 hpf, dose dependently disrupts PGC migration at 24-48 hpf, induces PGC death and upregulates sdf-1b at 5 days post hatching. 48 h of immersion treatment with CXCR4 antagonist (AMD3100, Abcam) also accelerated PGC mismigration and pushed the PGC away from gonadal ridge in a dose responsive manner, and further when grown to adulthood caused germ cell less gonad formation in some individuals. Cumulatively, our data, for the first time, suggests that JA PGC migration is largely regulated by SDF1/CXCR4 signaling, and modulation of this signaling has strong potential for sterile, germ cell less gonad preparation at a mass scale. However, further in-depth analysis is pertinent to apply this methodology in marine fish species to successfully catapult Japanese anchovy into a true marine fish model.
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Affiliation(s)
- Issei Yahiro
- Laboratory of Marine Biology, Faculty of Agriculture, Kyushu University, Fukuoka 819-0395, Japan
| | - Oga Sato
- Laboratory of Marine Biology, Faculty of Agriculture, Kyushu University, Fukuoka 819-0395, Japan
| | - Sipra Mohapatra
- Laboratory of Marine Biology, Faculty of Agriculture, Kyushu University, Fukuoka 819-0395, Japan; Aqua-Bioresource Innovation Center, Kyushu University, Saga 847-8511, Japan
| | - Koki Mukai
- Laboratory of Marine Biology, Faculty of Agriculture, Kyushu University, Fukuoka 819-0395, Japan; Fisheries Technology Institute, Japan Fisheries Research and Education Agency, Nagasaki 853-0508, Japan
| | - Atsushi Toyoda
- Advanced Genomics Center, National Institute of Genetics, Shizuoka 411-8540, Japan
| | - Takehiko Itoh
- School of Life Science and Technology, Tokyo Institute of Technology, Tokyo 152-8550, Japan
| | - Michiya Matsuyama
- Aqua-Bioresource Innovation Center, Kyushu University, Saga 847-8511, Japan
| | - Tapas Chakraborty
- Laboratory of Marine Biology, Faculty of Agriculture, Kyushu University, Fukuoka 819-0395, Japan; Aqua-Bioresource Innovation Center, Kyushu University, Saga 847-8511, Japan.
| | - Kohei Ohta
- Laboratory of Marine Biology, Faculty of Agriculture, Kyushu University, Fukuoka 819-0395, Japan; Aqua-Bioresource Innovation Center, Kyushu University, Saga 847-8511, Japan.
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Zhao X, Chen Y, Li R, Men Y, Yan K, Li Z, Cai W, He Y, Qi J. Immune Rejection Mediated by prf1 and gzmb Affects the Colonization of Fat Greenling ( Hexagrammos otakii) Spermatogonia in Heterotransplantation. Int J Mol Sci 2024; 25:5157. [PMID: 38791196 PMCID: PMC11121654 DOI: 10.3390/ijms25105157] [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: 04/08/2024] [Revised: 05/06/2024] [Accepted: 05/07/2024] [Indexed: 05/26/2024] Open
Abstract
Fish germ cell transplantation holds great potential for conserving endangered species, improving cultured fish breeds, and exploring reproductive techniques. However, low transplantation efficiency is a common issue in heterotransplantation. This study transplanted fat greenling (Hexagrammos otakii) spermatogonia into the testes of spotted sea bass (Lateolabrax maculatus) to investigate factors that might affect the colonization and fixation of heterologous transplanted germ cells. Results indicated that transplanted fat greenling spermatogonia cells were successfully detected in the early transplantation phase in spotted sea bass. Their numbers gradually decreased over time, and after 10 days post-transplantation, more than 90% of the transplanted cells underwent apoptosis. Transcriptome sequencing analysis of the testes of spotted sea bass and fat greenling spermatogonia on days 1 and 10 post-transplantation revealed that this apoptosis process involved many immune-related genes and their associated signaling pathways. Acute immune rejection marker genes prf1 and gzmb were detected in the spotted sea bass testes, while immune tolerance genes lck and zap-70 were expressed in the fat greenling spermatogonia. Additionally, differential expression of prf1 and gzmb genes was screened from spotted sea bass, with experimental evidence indicating that PRF1 and GZMB protein from spotted sea bass primarily induce apoptosis in transplanted fat greenling spermatogonia via the mitochondrial apoptosis pathway, at the protein level. This suggests that the difficulties in heterotransplantation are primarily related to acute immune rejection, with PRF1 and GZMB playing significant roles.
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Affiliation(s)
- Xi Zhao
- MOE Key Laboratory of Marine Genetics and Breeding, College of Marine Life Sciences, Ocean University of China, 5 Yushan Road, Qingdao 266003, China; (X.Z.); (Y.C.); (R.L.); (Y.M.); (K.Y.); (Z.L.); (W.C.); (Y.H.)
| | - Ying Chen
- MOE Key Laboratory of Marine Genetics and Breeding, College of Marine Life Sciences, Ocean University of China, 5 Yushan Road, Qingdao 266003, China; (X.Z.); (Y.C.); (R.L.); (Y.M.); (K.Y.); (Z.L.); (W.C.); (Y.H.)
| | - Rui Li
- MOE Key Laboratory of Marine Genetics and Breeding, College of Marine Life Sciences, Ocean University of China, 5 Yushan Road, Qingdao 266003, China; (X.Z.); (Y.C.); (R.L.); (Y.M.); (K.Y.); (Z.L.); (W.C.); (Y.H.)
| | - Yu Men
- MOE Key Laboratory of Marine Genetics and Breeding, College of Marine Life Sciences, Ocean University of China, 5 Yushan Road, Qingdao 266003, China; (X.Z.); (Y.C.); (R.L.); (Y.M.); (K.Y.); (Z.L.); (W.C.); (Y.H.)
| | - Kai Yan
- MOE Key Laboratory of Marine Genetics and Breeding, College of Marine Life Sciences, Ocean University of China, 5 Yushan Road, Qingdao 266003, China; (X.Z.); (Y.C.); (R.L.); (Y.M.); (K.Y.); (Z.L.); (W.C.); (Y.H.)
| | - Zibin Li
- MOE Key Laboratory of Marine Genetics and Breeding, College of Marine Life Sciences, Ocean University of China, 5 Yushan Road, Qingdao 266003, China; (X.Z.); (Y.C.); (R.L.); (Y.M.); (K.Y.); (Z.L.); (W.C.); (Y.H.)
| | - Wenxiu Cai
- MOE Key Laboratory of Marine Genetics and Breeding, College of Marine Life Sciences, Ocean University of China, 5 Yushan Road, Qingdao 266003, China; (X.Z.); (Y.C.); (R.L.); (Y.M.); (K.Y.); (Z.L.); (W.C.); (Y.H.)
| | - Yan He
- MOE Key Laboratory of Marine Genetics and Breeding, College of Marine Life Sciences, Ocean University of China, 5 Yushan Road, Qingdao 266003, China; (X.Z.); (Y.C.); (R.L.); (Y.M.); (K.Y.); (Z.L.); (W.C.); (Y.H.)
- Key Laboratory of Tropical Aquatic Germplasm of Hainan Province, Sanya Oceanographic Institute, Ocean University of China, Sanya 572000, China
| | - Jie Qi
- MOE Key Laboratory of Marine Genetics and Breeding, College of Marine Life Sciences, Ocean University of China, 5 Yushan Road, Qingdao 266003, China; (X.Z.); (Y.C.); (R.L.); (Y.M.); (K.Y.); (Z.L.); (W.C.); (Y.H.)
- Key Laboratory of Tropical Aquatic Germplasm of Hainan Province, Sanya Oceanographic Institute, Ocean University of China, Sanya 572000, China
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Nayak R, Franěk R, Laurent A, Pšenička M. Genome-wide comparative methylation analysis reveals the fate of germ stem cells after surrogate production in teleost. BMC Biol 2024; 22:39. [PMID: 38360607 PMCID: PMC10870548 DOI: 10.1186/s12915-024-01842-z] [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: 03/27/2023] [Accepted: 02/09/2024] [Indexed: 02/17/2024] Open
Abstract
BACKGROUND Surrogate production by germline stem cell transplantation is a powerful method to produce donor-derived gametes via a host, a practice known as surrogacy. The gametes produced by surrogates are often analysed on the basis of their morphology and species-specific genotyping, which enables conclusion to be drawn about the donor's characteristics. However, in-depth information, such as data on epigenetic changes, is rarely acquired. Germ cells develop in close contact with supporting somatic cells during gametogenesis in vertebrates, and we hypothesize that the recipient's gonadal environment may cause epigenetic changes in produced gametes and progeny. Here, we extensively characterize the DNA methylome of donor-derived sperm and their intergenerational effects in both inter- and intraspecific surrogates. RESULTS We found more than 3000 differentially methylated regions in both the sperm and progeny derived from inter- and intraspecific surrogates. Hypermethylation in the promoter regions of the protocadherin gamma gene in the intraspecific surrogates was found to be associated with germline transmission. On the contrary, gene expression level and the embryonic development of the offspring remained unaffected. We also discovered MAPK/p53 pathway disruption in interspecific surrogates due to promoter hypermethylation and identified that the inefficient removal of meiotic-arrested endogenous germ cells in hybrid gonads led to the production of infertile spermatozoa. CONCLUSIONS Donor-derived sperm and progeny from inter- and intraspecific surrogates were more globally hypermethylated than those of the donors. The observed changes in DNA methylation marks in the surrogates had no significant phenotypic effects in the offspring.
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Affiliation(s)
- Rigolin Nayak
- The University of South Bohemia in Ceske Budejovice, Faculty of Fisheries and Protection of Waters, South Bohemian Research Center of Aquaculture and Biodiversity of Hydrocenoses, Zatisi 728/II, 389 25, Vodnany, Czech Republic.
| | - Roman Franěk
- The University of South Bohemia in Ceske Budejovice, Faculty of Fisheries and Protection of Waters, South Bohemian Research Center of Aquaculture and Biodiversity of Hydrocenoses, Zatisi 728/II, 389 25, Vodnany, Czech Republic
- Department of Genetics, The Silberman Institute, The Hebrew University of Jerusalem, Jerusalem, Israel
| | - Audrey Laurent
- Fish Physiology and Genomics Laboratory, INRAE, Campus de Beaulieu, 35000, Rennes, France
| | - Martin Pšenička
- The University of South Bohemia in Ceske Budejovice, Faculty of Fisheries and Protection of Waters, South Bohemian Research Center of Aquaculture and Biodiversity of Hydrocenoses, Zatisi 728/II, 389 25, Vodnany, Czech Republic
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Yahiro I, Barnuevo KDE, Sato O, Mohapatra S, Toyoda A, Itoh T, Ohno K, Matsuyama M, Chakraborty T, Ohta K. Modeling the SDF-1/CXCR4 protein using advanced artificial intelligence and antagonist screening for Japanese anchovy. Front Physiol 2024; 15:1349119. [PMID: 38370015 PMCID: PMC10869568 DOI: 10.3389/fphys.2024.1349119] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2023] [Accepted: 01/16/2024] [Indexed: 02/20/2024] Open
Abstract
SDF-1/CXCR4 chemokine signaling are indispensable for cell migration, especially the Primordial Germ Cell (PGC) migration towards the gonadal ridge during early development. We earlier found that this signaling is largely conserved in the Japanese anchovy (Engraulis japonicus, EJ), and a mere treatment of CXCR4 antagonist, AMD3100, leads to germ cell depletion and thereafter gonad sterilization. However, the effect of AMD3100 was limited. So, in this research, we scouted for CXCR4 antagonist with higher potency by employing advanced artificial intelligence deep learning-based computer simulations. Three potential candidates, AMD3465, WZ811, and LY2510924, were selected and in vivo validation was conducted using Japanese anchovy embryos. We found that seven transmembrane motif of EJ CXCR4a and EJ CXCR4b were extremely similar with human homolog while the CXCR4 chemokine receptor N terminal (PF12109, essential for SDF-1 binding) was missing in EJ CXCR4b. 3D protein analysis and cavity search predicted the cavity in EJ CXCR4a to be five times larger (6,307 ų) than that in EJ CXCR4b (1,241 ų). Docking analysis demonstrated lower binding energy of AMD3100 and AMD3465 to EJ CXCR4a (Vina score -9.6) and EJ CXCR4b (Vina score -8.8), respectively. Furthermore, we observed significant PGC mismigration in microinjected AMD3465 treated groups at 10, 100 and 1 × 105 nM concentration in 48 h post fertilized embryos. The other three antagonists showed various degrees of PGC dispersion, but no significant effect compared to their solvent control at tested concentrations was observed. Cumulatively, our results suggests that AMD3645 might be a better candidate for abnormal PGC migration in Japanese anchovy and warrants further investigation.
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Affiliation(s)
- Issei Yahiro
- Laboratory of Marine Biology, Faculty of Agriculture, Kyushu University, Fukuoka, Japan
| | | | - Oga Sato
- Laboratory of Marine Biology, Faculty of Agriculture, Kyushu University, Fukuoka, Japan
| | - Sipra Mohapatra
- Laboratory of Marine Biology, Faculty of Agriculture, Kyushu University, Fukuoka, Japan
- Aqua-Bioresource Innovation Center, Kyushu University, Saga, Japan
| | - Atsushi Toyoda
- Advanced Genomics Center, National Institute of Genetics, Shizuoka, Japan
| | - Takehiko Itoh
- School and Graduate School of Bioscience and Biotechnology, Tokyo Institute of Technology, Kanagawa, Japan
| | - Kaoru Ohno
- National Institute for Basic Biology (NIBB), Aichi, Japan
| | | | - Tapas Chakraborty
- Laboratory of Marine Biology, Faculty of Agriculture, Kyushu University, Fukuoka, Japan
- Aqua-Bioresource Innovation Center, Kyushu University, Saga, Japan
| | - Kohei Ohta
- Laboratory of Marine Biology, Faculty of Agriculture, Kyushu University, Fukuoka, Japan
- Aqua-Bioresource Innovation Center, Kyushu University, Saga, Japan
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Rosero J, Monzani PS, Pessoa GP, Coelho GCZ, Carvalho GB, López LS, Senhorini JA, Dos Santos SCA, Yasui GS. Traceability of primordial germ cells in three neotropical fish species aiming genetic conservation actions. FISH PHYSIOLOGY AND BIOCHEMISTRY 2023:10.1007/s10695-023-01279-1. [PMID: 38060079 DOI: 10.1007/s10695-023-01279-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/13/2023] [Accepted: 11/24/2023] [Indexed: 12/08/2023]
Abstract
Primordial germ cells (PGCs) are embryonic pluripotent cells that can differentiate into spermatogonia and oogonia, and therefore, PGCs are a genetic source for germplasm conservation through cryobanking and the generation of germline chimeras. The knowledge of PGC migration routes is essential for transplantation studies. In this work, the mRNA synthesized from the ddx4 3'UTR sequence of Pseudopimelodus mangurus, in fusion with gfp or dsred, was microinjected into zygotes of three neotropical species (P. mangurus, Astyanax altiparanae, and Prochilodus lineatus) for PGC labeling. Visualization of labeled PGCs was achieved by fluorescence microscopy during embryonic development. In addition, ddx4 and dnd1 expressions were evaluated during embryonic development, larvae, and adult tissues of P. mangurus, to validate their use as a PGC marker. As a result, the effective identification of presumptive PGCs was obtained. DsRed-positive PGC of P. mangurus was observed in the hatching stage, GFP-positive PGC of A. altiparanae in the gastrula stage, and GFP-positive PGCs from P. lineatus were identified at the segmentation stage, with representative labeling percentages of 29% and 16% in A. altiparanae and P. lineatus, respectively. The expression of ddx4 and dnd1 of P. mangurus confirmed the specificity of these genes in germ cells. These results point to the functionality of the P. mangurus ddx4 3'UTR sequence as a PGC marker, demonstrating that PGC labeling was more efficient in A. altiparanae and P. lineatus. The procedures used to identify PGCs in P. mangurus consolidate the first step for generating germinal chimeras as a conservation action of P. mangurus.
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Affiliation(s)
- Jenyffer Rosero
- Department of Animal Reproduction, School of Veterinary Medicine and Animal Science, University of São Paulo, Pirassununga, São Paulo, Brazil.
- Laboratory of Fish Biotechnology, National Center for Research and Conservation of Continental Aquatic Biodiversity, Chico Mendes Institute of Biodiversity Conservation, Pirassununga, São Paulo, Brazil.
| | - Paulo Sérgio Monzani
- Laboratory of Fish Biotechnology, National Center for Research and Conservation of Continental Aquatic Biodiversity, Chico Mendes Institute of Biodiversity Conservation, Pirassununga, São Paulo, Brazil
- Institute of Bioscience, São Paulo State University, Botucatu, São Paulo, Brazil
| | - Giselle Pessanha Pessoa
- Laboratory of Fish Biotechnology, National Center for Research and Conservation of Continental Aquatic Biodiversity, Chico Mendes Institute of Biodiversity Conservation, Pirassununga, São Paulo, Brazil
- Institute of Bioscience, São Paulo State University, Botucatu, São Paulo, Brazil
| | - Geovanna Carla Zacheo Coelho
- Laboratory of Fish Biotechnology, National Center for Research and Conservation of Continental Aquatic Biodiversity, Chico Mendes Institute of Biodiversity Conservation, Pirassununga, São Paulo, Brazil
- Institute of Bioscience, São Paulo State University, Botucatu, São Paulo, Brazil
| | - Gabriella Braga Carvalho
- Department of Animal Reproduction, School of Veterinary Medicine and Animal Science, University of São Paulo, Pirassununga, São Paulo, Brazil
- Laboratory of Fish Biotechnology, National Center for Research and Conservation of Continental Aquatic Biodiversity, Chico Mendes Institute of Biodiversity Conservation, Pirassununga, São Paulo, Brazil
| | - Lucia Suárez López
- Laboratory of Fish Biotechnology, National Center for Research and Conservation of Continental Aquatic Biodiversity, Chico Mendes Institute of Biodiversity Conservation, Pirassununga, São Paulo, Brazil
- Institute of Bioscience, São Paulo State University, Botucatu, São Paulo, Brazil
| | - José Augusto Senhorini
- Laboratory of Fish Biotechnology, National Center for Research and Conservation of Continental Aquatic Biodiversity, Chico Mendes Institute of Biodiversity Conservation, Pirassununga, São Paulo, Brazil
- Institute of Bioscience, São Paulo State University, Botucatu, São Paulo, Brazil
| | | | - George Shigueki Yasui
- Department of Animal Reproduction, School of Veterinary Medicine and Animal Science, University of São Paulo, Pirassununga, São Paulo, Brazil
- Laboratory of Fish Biotechnology, National Center for Research and Conservation of Continental Aquatic Biodiversity, Chico Mendes Institute of Biodiversity Conservation, Pirassununga, São Paulo, Brazil
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Wylie MJ, Kitson J, Russell K, Yoshizaki G, Yazawa R, Steeves TE, Wellenreuther M. Fish germ cell cryobanking and transplanting for conservation. Mol Ecol Resour 2023. [PMID: 37712134 DOI: 10.1111/1755-0998.13868] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2023] [Revised: 05/26/2023] [Accepted: 07/18/2023] [Indexed: 09/16/2023]
Abstract
The unprecedented loss of global biodiversity is linked to multiple anthropogenic stressors. New conservation technologies are urgently needed to mitigate this loss. The rights, knowledge and perspectives of Indigenous peoples in biodiversity conservation-including the development and application of new technologies-are increasingly recognised. Advances in germplasm cryopreservation and germ cell transplantation (termed 'broodstock surrogacy') techniques offer exciting tools to preserve biodiversity, but their application has been underappreciated. Here, we use teleost fishes as an exemplar group to outline (1) the power of these techniques to preserve genome-wide genetic diversity, (2) the need to apply a conservation genomic lens when selecting individuals for germplasm cryobanking and broodstock surrogacy and (3) the value of considering the cultural significance of these genomic resources. We conclude by discussing the opportunities and challenges of these techniques for conserving biodiversity in threatened teleost fish and beyond.
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Affiliation(s)
- Matthew J Wylie
- The New Zealand Institute for Plant & Food Research Limited, Nelson, New Zealand
| | - Jane Kitson
- Kitson Consulting Ltd, Invercargill, New Zealand
| | - Khyla Russell
- Kāti Huirapa Rūnaka ki Puketeraki, Karitane, New Zealand
| | - Goro Yoshizaki
- Department of Marine Biosciences, Tokyo University of Marine Science and Technology, Tokyo, Japan
| | - Ryosuke Yazawa
- Department of Marine Biosciences, Tokyo University of Marine Science and Technology, Tokyo, Japan
| | - Tammy E Steeves
- School of Biological Sciences, University of Canterbury, Christchurch, New Zealand
| | - Maren Wellenreuther
- The New Zealand Institute for Plant & Food Research Limited, Nelson, New Zealand
- School of Biological Sciences, The University of Auckland, Auckland, New Zealand
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Nayak R, Franěk R, Šindelka R, Pšenička M. Enhancement of zebrafish sperm production via a large body-sized surrogate with germ cell transplantation. Commun Biol 2023; 6:412. [PMID: 37059808 PMCID: PMC10104805 DOI: 10.1038/s42003-023-04800-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2022] [Accepted: 04/03/2023] [Indexed: 04/16/2023] Open
Abstract
Zebrafish (Danio rerio) is a commonly-used vertebrate model species for many research areas. However, its low milt volume limits effective cryopreservation of sperm from a single individual and often precludes dividing a single semen sample to conduct multiple downstream procedures such as genomic DNA/RNA extraction and in-vitro fertilization. Here, we apply germ stem cell transplantation to increase zebrafish sperm production in a closely related larger species from the same subfamily, giant danio Devario aequipinnatus. The endogenous germ cell of the host is depleted by dead-end morpholino antisense oligonucleotide. Histology of the sterile gonad and quantitative PCR of gonadal tissue reveals all sterile giant danio develop the male phenotype. Spermatogonial cells of Tg(ddx4:egfp) transgenic zebrafish are transplanted into sterile giant danio larvae, and 22% of recipients (germline chimera) produce donor-derived sperm at sexual maturation. The germline chimera produce approximately three-fold the volume of sperm and 10-fold the spermatozoon concentration of the donor. The donor-derived sperm is functional and gives rise to viable progeny upon fertilization of donor oocytes. We show that the issue of low milt volume can be effectively addressed by employing a larger surrogate parent.
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Affiliation(s)
- Rigolin Nayak
- The University of South Bohemia in Ceske Budejovice, Faculty of Fisheries and Protection of Waters, South Bohemian Research Center of Aquaculture and Biodiversity of Hydrocenoses, Vodnany, Czech Republic.
| | - Roman Franěk
- The University of South Bohemia in Ceske Budejovice, Faculty of Fisheries and Protection of Waters, South Bohemian Research Center of Aquaculture and Biodiversity of Hydrocenoses, Vodnany, Czech Republic
- Department of Genetics, The Silberman Institute, The Hebrew University of Jerusalem, Jerusalem, Israel
| | - Radek Šindelka
- Laboratory of Gene Expression, Institute of Biotechnology, BIOCEV, Vestec, Czech Republic
| | - Martin Pšenička
- The University of South Bohemia in Ceske Budejovice, Faculty of Fisheries and Protection of Waters, South Bohemian Research Center of Aquaculture and Biodiversity of Hydrocenoses, Vodnany, Czech Republic
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9
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Efficient Artificial Fertilization and Ovulated Egg Preservation in Kawakawa Euthynnus affinis. JOURNAL OF MARINE SCIENCE AND ENGINEERING 2022. [DOI: 10.3390/jmse10050599] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/10/2022]
Abstract
Artificial fertilization of cultured fish is essential for seed production using breeding techniques. However, in tuna species, the success rate of artificial fertilization is tremendously low. In this study, it was reported that the adequate procedure for ovulated egg collection and storage for artificial fertilization in kawakawa Euthynnus affinis. The collection of ovulated eggs was attempted using new techniques that disrupt only spawning activity without discontinuing ovulation. The available time to use ovulated eggs was also examined by assessing the optimal preservation process and temperature. As a result, artificial fertilization was effectively executed by assessing spawning time and thoroughly extracting ovulated eggs immediately after ovulation, with a success rate of 70% and an ovulation rate of 51.7%. Ovulated eggs could be stored with small quantities of ovarian fluid to sustain fertility. However, fertility was better preserved with Hanks’ solution. Ovulated eggs with high productivity were achieved 3 h after egg extraction when maintained in Hanks’ solution at 20 °C, leading to a supply of one-cell stage embryo for microinjection treatment constantly by continuously executing artificial fertilization. This systematic procedure permitted selective breeding by 1:1 mating between top-quality parental fish and applying several developmental engineering techniques to kawakawa breeding.
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10
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Ye H, Takeuchi Y, Du H, Yue H, Ruan R, Li C, Wei Q. Spermatogonia From Cryopreserved Testes of Critically Endangered Chinese Sturgeon Efficiently Colonized and Preferentially Proliferated in the Recipient Gonads of Yangtze Sturgeon. MARINE BIOTECHNOLOGY (NEW YORK, N.Y.) 2022; 24:136-150. [PMID: 35099661 DOI: 10.1007/s10126-022-10092-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/27/2021] [Accepted: 01/17/2022] [Indexed: 06/14/2023]
Abstract
The critically endangered Chinese sturgeon, Acipenser sinensis, presents late sexual maturity and has a large body size. Germ cell transplantation is a powerful technique for the production of gametes from large-bodied species in closely related recipients with a smaller body size and shorter generation time. To accelerate reproduction of Chinese sturgeon, donor spermatogonia collected from the cryopreserved testes of 3-year-old Chinese sturgeon were intraperitoneally transplanted into 7-8 days post-hatch larvae of Yangtze sturgeon (Acipenser dabryanus) with shorter generation interval. At 2 months post-transplantation (mpt), donor spermatogonia had colonized in the 81.25% of recipient gonads, with average numbers about two times those of endogenous primordial germ cells. Within the next 2 months, the rate of endogenous germ cell division in females (2-3 times) was faster than that in males (once), whereas colonized donor-derived spermatogonia divided about 2-3 times and twice in recipient females and males, respectively. Furthermore, the expression of germ cell-related genes, dazl, dead end, and vasa, in transplanted fish was higher than that in non-transplanted fish, suggesting the incorporation and proliferation donor spermatogonia in recipient. At 18 mpt, donor-derived spermatogonia survived in the 75.00% of recipient gonads. These results showed that the somatic microenvironment of Yangtze sturgeon gonad can support the long-term colonization, proliferation, and survival of xenogeneic germ cells. Thus, this study suggested that small-bodied Yangtze sturgeon is promising recipient as surrogate for Chinese sturgeon gamete production.
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Affiliation(s)
- Huan Ye
- Key Laboratory of Freshwater Biodiversity Conservation, Ministry of Agriculture and Rural Affairs, Yangtze River Fisheries Research Institute, Chinese Academy of Fishery Sciences, Wuhan, 430223, China
| | - Yutaka Takeuchi
- Noto Center for Fisheries Science and Technology, Faculty of Biological Science and Technology, Kanazawa University, Ishikawa, 927-0552, Japan
| | - Hao Du
- Key Laboratory of Freshwater Biodiversity Conservation, Ministry of Agriculture and Rural Affairs, Yangtze River Fisheries Research Institute, Chinese Academy of Fishery Sciences, Wuhan, 430223, China
| | - Huamei Yue
- Key Laboratory of Freshwater Biodiversity Conservation, Ministry of Agriculture and Rural Affairs, Yangtze River Fisheries Research Institute, Chinese Academy of Fishery Sciences, Wuhan, 430223, China
| | - Rui Ruan
- Key Laboratory of Freshwater Biodiversity Conservation, Ministry of Agriculture and Rural Affairs, Yangtze River Fisheries Research Institute, Chinese Academy of Fishery Sciences, Wuhan, 430223, China
| | - Chuangju Li
- Key Laboratory of Freshwater Biodiversity Conservation, Ministry of Agriculture and Rural Affairs, Yangtze River Fisheries Research Institute, Chinese Academy of Fishery Sciences, Wuhan, 430223, China.
| | - Qiwei Wei
- Key Laboratory of Freshwater Biodiversity Conservation, Ministry of Agriculture and Rural Affairs, Yangtze River Fisheries Research Institute, Chinese Academy of Fishery Sciences, Wuhan, 430223, China.
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Ryu JH, Xu L, Wong TT. Advantages, Factors, Obstacles, Potential Solutions, and Recent Advances of Fish Germ Cell Transplantation for Aquaculture-A Practical Review. Animals (Basel) 2022; 12:ani12040423. [PMID: 35203131 PMCID: PMC8868515 DOI: 10.3390/ani12040423] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2022] [Revised: 02/05/2022] [Accepted: 02/06/2022] [Indexed: 12/11/2022] Open
Abstract
Simple Summary This review aims to provide practical information and viewpoints regarding fish germ cell transplantation for enhancing its commercial applications. We reviewed and summarized the data from more than 70 important studies and described the advantages, obstacles, recent advances, and future perspectives of fish germ cell transplantation. We concluded and proposed the critical factors for achieving better success and various options for germ cell transplantation with their pros and cons. Additionally, we discussed why this technology has not actively been utilized for commercial purposes, what barriers need to be overcome, and what potential solutions can advance its applications in aquaculture. Abstract Germ cell transplantation technology enables surrogate offspring production in fish. This technology has been expected to mitigate reproductive barriers, such as long generation time, limited fecundity, and complex broodstock management, enhancing seed production and productivity in aquaculture. Many studies of germ cell transplantation in various fish species have been reported over a few decades. So far, surrogate offspring production has been achieved in many commercial species. In addition, the knowledge of fish germ cell biology and the related technologies that can enhance transplantation efficiency and productivity has been developed. Nevertheless, the commercial application of this technology still seems to lag behind, indicating that the established models are neither beneficial nor cost-effective enough to attract potential commercial users of this technology. Furthermore, there are existing bottlenecks in practical aspects such as impractical shortening of generation time, shortage of donor cells with limited resources, low efficiency, and unsuccessful surrogate offspring production in some fish species. These obstacles need to be overcome through further technology developments. Thus, we thoroughly reviewed the studies on fish germ cell transplantation reported to date, focusing on the practicality, and proposed potential solutions and future perspectives.
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Ichida K, Jangprai A, Khaosa-Art P, Yoshizaki G, Boonanuntanasarn S. Characterization of a vasa homolog in Mekong giant catfish (Pangasianodon gigas): Potential use as a germ cell marker. Anim Reprod Sci 2021; 234:106869. [PMID: 34656888 DOI: 10.1016/j.anireprosci.2021.106869] [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: 03/18/2021] [Revised: 09/25/2021] [Accepted: 09/27/2021] [Indexed: 11/25/2022]
Abstract
For the long-term preservation of the genetic resources of endangered fish species, a combination of germ cell cryopreservation and transplantation can be an effective technique. To optimize these techniques, it is important to identify undifferentiated germ cells possessing transplantability, such as primordial germ cells, type A spermatogonia (ASGs), and oogonia. In this study, a homolog of vasa cDNA in Mekong giant catfish (MGC-vasa) (Pangasianodon gigas), which is an endangered species inhabiting the Mekong river, was cloned and characterized for use as a putative germ cell marker. Results indicate that MGC-Vasa contained all of the consensus motifs, including the arginine-glycine and arginine-glycine-glycine motifs, as well as the nine conserved motifs belonging to the DEAD-box family of proteins. Results from phylogenetic analysis indicated MGC-vasa also grouped with Vasa and was clearly distinguishable from Pl10 in other teleosts. Results from analysis of abundance of mRNA transcripts using reverse transcription-polymerase chain reaction and in situ hybridization performed on immature Mekong giant catfish testis indicated vasa was present specifically in germ cells, with large abundances of the relevant mRNA in spermatogonia and spermatocytes. Sequence similarity and the specific localization of MGC-vasa in these germ cells suggest that the sequence ascertained in this study was a vasa homolog in Mekong giant catfish. Furthermore, vasa-positive cells were detected in prepared smears of testicular cells, indicating that it may be a useful germ cell marker for enzymatically dissociated cells used for transplantation studies.
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Affiliation(s)
- Kensuke Ichida
- Institute for Reproductive Biotechnology for Aquatic Species (IRBAS), Tokyo University of Marine Science and Technology, 4-5-7 Konan Minato-ku, Tokyo 108-8477, Japan
| | - Araya Jangprai
- School of Animal Technology and Innovation, Institute of Agricultural Technology, Suranaree University of Technology, Nakhon Ratchasima, Thailand
| | - Pongsawan Khaosa-Art
- School of Animal Technology and Innovation, Institute of Agricultural Technology, Suranaree University of Technology, Nakhon Ratchasima, Thailand
| | - Goro Yoshizaki
- Institute for Reproductive Biotechnology for Aquatic Species (IRBAS), Tokyo University of Marine Science and Technology, 4-5-7 Konan Minato-ku, Tokyo 108-8477, Japan; Department of Marine Biosciences, Tokyo University of Marine Science and Technology, 4-5-7 Konan Minato-ku, Tokyo 108-8477, Japan
| | - Surintorn Boonanuntanasarn
- School of Animal Technology and Innovation, Institute of Agricultural Technology, Suranaree University of Technology, Nakhon Ratchasima, Thailand.
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Surrogate production of genome-edited sperm from a different subfamily by spermatogonial stem cell transplantation. SCIENCE CHINA-LIFE SCIENCES 2021; 65:969-987. [PMID: 34586576 DOI: 10.1007/s11427-021-1989-9] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/12/2021] [Accepted: 08/10/2021] [Indexed: 12/25/2022]
Abstract
The surrogate reproduction technique, such as inter-specific spermatogonial stem cells (SSCs) transplantation (SSCT), provides a powerful tool for production of gametes derived from endangered species or those with desirable traits. However, generation of genome-edited gametes from a different species or production of gametes from a phylogenetically distant species such as from a different subfamily, by SSCT, has not succeeded. Here, using two small cyprinid fishes from different subfamilies, Chinese rare minnow (gobiocypris rarus, for brief: Gr) and zebrafish (danio rerio), we successfully obtained Gr-derived genome-edited sperm in zebrafish by an optimized SSCT procedure. The transplanted Gr SSCs supported the host gonadal development and underwent normal spermatogenesis, resulting in a reconstructed fertile testis containing Gr spermatids and zebrafish testicular somatic cells. Interestingly, the surrogate spermatozoa resembled those of host zebrafish but not donor Gr in morphology and swimming behavior. When pou5f3 and chd knockout Gr SSCs were transplanted, Gr-derived genome-edited sperm was successfully produced in zebrafish. This is the first report demonstrating surrogate production of gametes from a different subfamily by SSCT, and surrogate production of genome-edited gametes from another species as well. This method is feasible to be applied to future breeding of commercial fish and livestock.
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Hayashida T, Higuchi K, Hashimoto H, Kazeto Y, Eba T, Yoshikawa S, Goto R, Okita K, Takashi T, Ishii K, Yamashita T, Kumon K, Gen K. Gonadal sex differentiation and early ovarian/testicular development in cultured Pacific bluefin tuna, Thunnus orientalis (Temminck et Schlegel). Theriogenology 2021; 173:56-63. [PMID: 34333168 DOI: 10.1016/j.theriogenology.2021.07.016] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2021] [Revised: 06/23/2021] [Accepted: 07/23/2021] [Indexed: 02/07/2023]
Abstract
Pacific bluefin tuna (PBT), Thunnus orientalis, is one of the most important species for aquaculture in Japan. Recently, the reduction in muscle fat content associated with sexual maturation in farmed PBT has become a serious problem. To develop technologies for inducing sterility, detailed and reliable data on gonadal development in PBT are needed. Here, we demonstrated the process of gonadal sex differentiation, and of early ovarian and testicular development during the immature stages in PBT. Gonadal sex differentiation was first characterized by the formation of the ovarian cavity in female and of the efferent ducts in male 57 days post hatching (dph). The gonads then differentiated into ovaries or testes according to the genotypic sex until 83 dph. During this period, primordial germ cells, oogonia, and type-A spermatogonia were solitarily distributed in the gonads, and the number of germ cells did not differ between sexes. After gonadal sex differentiation, gonads of PBTs developed in a sexually dimorphic manner: proliferation and differentiation of germ cells occurred earlier in the ovaries than in the testes. The oogonia in ovaries formed cysts at 185 dph, but the type-A spermatogonia were solitarily distributed in testes at this stage, and cysts of type-A spermatogonia were first observed at 247 dph. Moreover, the oogonia entered meiosis and differentiated into chromatin-nucleolus stage oocytes until 247 dph, and subsequently into peri-nucleolus stage oocytes until 285 dph, whereas the type-A spermatogonia differentiated into type-B spermatogonia, spermatocytes, spermatids, and spermatozoa from 446 dph onwards. We believe the results of this study provide the necessary basis for future studies on sterile PBT production.
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Affiliation(s)
- Takao Hayashida
- Nagasaki Field Station, Fisheries Technology Institute, Japan Fisheries Research and Education Agency, 1551-8 Taira-machi, Nagasaki, Nagasaki, 851-2213, Japan; Graduate School of Marine Science and Technology, Tokyo University of Marine Science and Technology, 4-5-7 Konan, Minato-ku, Tokyo, 108-8477, Japan.
| | - Kentaro Higuchi
- Nagasaki Field Station, Fisheries Technology Institute, Japan Fisheries Research and Education Agency, 1551-8 Taira-machi, Nagasaki, Nagasaki, 851-2213, Japan
| | - Hiroshi Hashimoto
- Amami Field Station, Fisheries Technology Institute, Japan Fisheries Research and Education Agency, 955 Hyou, Setouchi, Kagoshima, 894-2414, Japan
| | - Yukinori Kazeto
- Tamaki Field Station, Fisheries Technology Institute, Japan Fisheries Research and Education Agency, 224-1 Hiruda, Tamaki, Mie, 519-0423, Japan
| | - Takeshi Eba
- Amami Field Station, Fisheries Technology Institute, Japan Fisheries Research and Education Agency, 955 Hyou, Setouchi, Kagoshima, 894-2414, Japan
| | - Sota Yoshikawa
- Nagasaki Prefectural Institute of Fisheries, 1551-4 Taira-machi, Nagasaki, Nagasaki, 851-2213, Japan
| | - Rie Goto
- Nishiura Station, South Ehime Fisheries Research Center, Ehime University, 25-1 Uchidomari, Minamiuwa, Ehime, 798-4206, Japan
| | - Kogen Okita
- Nagasaki Field Station, Fisheries Technology Institute, Japan Fisheries Research and Education Agency, 1551-8 Taira-machi, Nagasaki, Nagasaki, 851-2213, Japan
| | - Toshinori Takashi
- Nagasaki Field Station, Fisheries Technology Institute, Japan Fisheries Research and Education Agency, 1551-8 Taira-machi, Nagasaki, Nagasaki, 851-2213, Japan
| | - Keita Ishii
- Nagasaki Field Station, Fisheries Technology Institute, Japan Fisheries Research and Education Agency, 1551-8 Taira-machi, Nagasaki, Nagasaki, 851-2213, Japan
| | - Takashi Yamashita
- Amami Field Station, Fisheries Technology Institute, Japan Fisheries Research and Education Agency, 955 Hyou, Setouchi, Kagoshima, 894-2414, Japan
| | - Kazunori Kumon
- Amami Field Station, Fisheries Technology Institute, Japan Fisheries Research and Education Agency, 955 Hyou, Setouchi, Kagoshima, 894-2414, Japan
| | - Koichiro Gen
- Nagasaki Field Station, Fisheries Technology Institute, Japan Fisheries Research and Education Agency, 1551-8 Taira-machi, Nagasaki, Nagasaki, 851-2213, Japan.
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Rivers N, Daly J, Temple-Smith P. New directions in assisted breeding techniques for fish conservation. Reprod Fertil Dev 2021; 32:807-821. [PMID: 32527372 DOI: 10.1071/rd19457] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2019] [Accepted: 04/26/2020] [Indexed: 12/13/2022] Open
Abstract
Fish populations continue to decline globally, signalling the need for new initiatives to conserve endangered species. Over the past two decades, with advances in our understanding of fish germ line biology, new exsitu management strategies for fish genetics and reproduction have focused on the use of germ line cells. The development of germ cell transplantation techniques for the purposes of propagating fish species, most commonly farmed species such as salmonids, has been gaining interest among conservation scientists as a means of regenerating endangered species. Previously, exsitu conservation methods in fish have been restricted to the cryopreservation of gametes or maintaining captive breeding colonies, both of which face significant challenges that have restricted their widespread implementation. However, advances in germ cell transplantation techniques have made its application in endangered species tangible. Using this approach, it is possible to preserve the genetics of fish species at any stage in their reproductive cycle regardless of sexual maturity or the limitations of brief annual spawning periods. Combining cryopreservation and germ cell transplantation will greatly expand our ability to preserve functional genetic samples from threatened species, to secure fish biodiversity and to produce new individuals to enhance or restore native populations.
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Affiliation(s)
- Nicola Rivers
- Department of Obstetrics and Gynaecology, School of Clinical Sciences, Monash University, Melbourne, Vic. 3168, Australia; and Corresponding author.
| | - Jonathan Daly
- Smithsonian Conservation Biology Institute, Front Royal, VA 22360, USA; and Hawaii Institute of Marine Biology, 46-007 Lilipuna Road, Kaneohe, HI 96744, USA
| | - Peter Temple-Smith
- Department of Obstetrics and Gynaecology, School of Clinical Sciences, Monash University, Melbourne, Vic. 3168, Australia
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Heat-induced triploids in Brycon amazonicus: a strategic fish species for aquaculture and conservation. ZYGOTE 2021; 29:372-376. [PMID: 33818341 DOI: 10.1017/s0967199421000125] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
Triploidization plays an important role in aquaculture and surrogate technologies. In this study, we induced triploidy in the matrinxã fish (Brycon amazonicus) using a heat-shock technique. Embryos at 2 min post fertilization (mpf) were heat shocked at 38°C, 40°C, or 42°C for 2 min. Untreated, intact embryos were used as a control. Survival rates during early development were monitored and ploidy status was confirmed using flow cytometry and nuclear diameter analysis of erythrocytes. The hatching rate reduced with heat-shock treatment, and heat-shock treatments at 42°C resulted in no hatching events. Optimal results were obtained at 40°C with 95% of larvae exhibiting triploidy. Therefore, we report that heat-shock treatments of embryos (2 mpf) at 40°C for 2 min is an effective way to induce triploid individuals in B. amazonicus.
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17
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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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18
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Ye H, Zhou C, Yue H, Wu M, Ruan R, Du H, Li C, Wei Q. Cryopreservation of germline stem cells in American paddlefish (Polyodon spathula). Anim Reprod Sci 2020; 224:106667. [PMID: 33307489 DOI: 10.1016/j.anireprosci.2020.106667] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2020] [Revised: 11/24/2020] [Accepted: 11/25/2020] [Indexed: 11/28/2022]
Abstract
Most sturgeon and paddlefish are critically endangered; therefore, effective measures to conserve these genetic resources are required. Cryopreservation of gonad tissues containing germline stem cells could be an effective strategy for long term preservation and restoration of fish species using germ cell transplantation procedure. The aim of this study was to develop an optimal procedure for long-term cryopreservation of American paddlefish gonads using a slow-freezing method. Through optimization of permeating cryoprotectants, nonpermeating cryoprotectants, and supplementation of proteins, gonad tissues were frozen with a cryomedium containing 1.3 M dimethyl sulfoxide, 0.1 M trehalose, and 10 % fetal bovine serum at a cooling rate of -1 °C/min. This method was also successfully utilized for the cryopreservation of Yangtze sturgeon testes. Viability of gonadal cells isolated from frozen gonads was not different from cells isolated from fresh gonadal tissues, while the number of gonadal cells dissociated from frozen gonads was less. Germline stem cells dissociated from long-term (1 year) cryopreserved gonads were labeled with PKH26 fluorescent dye and intraperitoneally transplanted into larvae of Yangtze sturgeon. The colonization of transplanted germline stem cells was confirmed by the presence of PKH26-labeled donor germline stem cells and donor-derived mtDNA sequence in the recipient gonads, providing evidence that germline stem cells from sturgeon and paddlefish gonads that had been preserved for a long period maintained their functions. The results of present study indicate the procedures used are effective for long-term preservation of critically endangered species within the Acipenseriformes order which can later be regenerated using surrogate broodstock technology.
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Affiliation(s)
- Huan Ye
- Key Laboratory of Freshwater Biodiversity Conservation, Ministry of Agriculture and Rural Affairs, Yangtze River Fisheries Research Institute, Chinese Academy of Fishery Sciences, Wuhan 430223, China
| | - Congli Zhou
- Key Laboratory of Freshwater Biodiversity Conservation, Ministry of Agriculture and Rural Affairs, Yangtze River Fisheries Research Institute, Chinese Academy of Fishery Sciences, Wuhan 430223, China
| | - Huamei Yue
- Key Laboratory of Freshwater Biodiversity Conservation, Ministry of Agriculture and Rural Affairs, Yangtze River Fisheries Research Institute, Chinese Academy of Fishery Sciences, Wuhan 430223, China
| | - Mengbin Wu
- Key Laboratory of Freshwater Biodiversity Conservation, Ministry of Agriculture and Rural Affairs, Yangtze River Fisheries Research Institute, Chinese Academy of Fishery Sciences, Wuhan 430223, China
| | - Rui Ruan
- Key Laboratory of Freshwater Biodiversity Conservation, Ministry of Agriculture and Rural Affairs, Yangtze River Fisheries Research Institute, Chinese Academy of Fishery Sciences, Wuhan 430223, China
| | - Hao Du
- Key Laboratory of Freshwater Biodiversity Conservation, Ministry of Agriculture and Rural Affairs, Yangtze River Fisheries Research Institute, Chinese Academy of Fishery Sciences, Wuhan 430223, China
| | - Chuangju Li
- Key Laboratory of Freshwater Biodiversity Conservation, Ministry of Agriculture and Rural Affairs, Yangtze River Fisheries Research Institute, Chinese Academy of Fishery Sciences, Wuhan 430223, China.
| | - Qiwei Wei
- Key Laboratory of Freshwater Biodiversity Conservation, Ministry of Agriculture and Rural Affairs, Yangtze River Fisheries Research Institute, Chinese Academy of Fishery Sciences, Wuhan 430223, China.
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Kawamura W, Tani R, Yahagi H, Kamio S, Morita T, Takeuchi Y, Yazawa R, Yoshizaki G. Suitability of hybrid mackerel (Scomber australasicus × S. japonicus) with germ cell-less sterile gonads as a recipient for transplantation of bluefin tuna germ cells. Gen Comp Endocrinol 2020; 295:113525. [PMID: 32502497 DOI: 10.1016/j.ygcen.2020.113525] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/30/2020] [Revised: 05/25/2020] [Accepted: 05/30/2020] [Indexed: 01/11/2023]
Abstract
We aim to establish a small-bodied surrogate broodstock, such as mackerel, which produces functional bluefin tuna gametes by spermatogonial transplantation. When reproductively fertile fish are used as recipients, endogenous gametogenesis outcompetes donor-derived gametogenesis, and recipient fish predominantly produce their gametes. In this study, we assessed fertility of hybrid mackerel, Scomber australasicus × S. japonicus, and its suitability as a recipient for transplantation of bluefin tuna germ cells. Hybrid mackerel were produced by artificially inseminating S. australasicus eggs with S. japonicus spermatozoa. Cellular DNA content and PCR analyses revealed that F1 offspring were diploid carrying both paternal and maternal genomes. Surprisingly, histological observations found no germ cells in hybrid mackerel gonads at 120 days post-hatch (dph), although they were present in the gonad of 30- and 60-dph hybrid mackerel. The frequency of germ cell-less fish was 100% at 120-dph, 63.1% at 1-year-old, and 81.8% at 2-year-old. We also confirmed a lack of expression of germ cell marker (DEAD-box helicase 4, ddx4) in the germ cell-less gonads of hybrid mackerel. By contrast, expression of Sertoli cell marker (gonadal soma-derived growth factor, gsdf) and of Leydig cell marker (steroid 11-beta-hydroxlase, cyp11b1) were clearly detected in hybrid mackerel gonads. Together these results showed that most of the hybrid gonads were germ cell-less sterile, but still possessed supporting cells and steroidogenic cells, both of which are indispensable for nursing donor-derived germ cells. To determine whether hybrid gonads could attract and incorporate donor bluefin tuna germ cells, testicular cells labeled with PKH26 fluorescent dye were intraperitoneally transplanted. Fluorescence observation of hybrid recipients at 14 days post-transplantation revealed that donor cells had been incorporated into the recipient's gonads. This suggests that hybrid mackerel show significant promise for use as a recipient to produce bluefin tuna gametes.
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Affiliation(s)
- Wataru Kawamura
- Department of Marine Biosciences, Tokyo University of Marine Science and Technology, 4-5-7 Konan, Minato-ku, Tokyo 108-8477, Japan
| | - Reoto Tani
- Department of Marine Biosciences, Tokyo University of Marine Science and Technology, 4-5-7 Konan, Minato-ku, Tokyo 108-8477, Japan
| | - Hana Yahagi
- Department of Marine Biosciences, Tokyo University of Marine Science and Technology, 4-5-7 Konan, Minato-ku, Tokyo 108-8477, Japan
| | - Shigeharu Kamio
- Department of Marine Biosciences, Tokyo University of Marine Science and Technology, 4-5-7 Konan, Minato-ku, Tokyo 108-8477, Japan
| | - Tetsuro Morita
- Oita Marine Biological Technology Center, Nippon Suisan Kaisha, Ltd., 508-8, Ariakrura Turumi, Saiki-shi, Oita 876-1204, Japan
| | - Yutaka Takeuchi
- Noto Center for Fisheries Science and Technology, Faculty of Biological Science and Technology, Kanazawa University, 11-4-1 Otsusaka, Noto-cho, Ishikawa 927-0552, Japan
| | - Ryosuke Yazawa
- Department of Marine Biosciences, Tokyo University of Marine Science and Technology, 4-5-7 Konan, Minato-ku, Tokyo 108-8477, Japan.
| | - Goro Yoshizaki
- Department of Marine Biosciences, Tokyo University of Marine Science and Technology, 4-5-7 Konan, Minato-ku, Tokyo 108-8477, Japan.
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20
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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, Tichopád T, Fučíková M, Steinbach C, Pšenička M. Production and use of triploid zebrafish for surrogate reproduction. Theriogenology 2019; 140:33-43. [PMID: 31425935 DOI: 10.1016/j.theriogenology.2019.08.016] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2019] [Revised: 07/29/2019] [Accepted: 08/12/2019] [Indexed: 11/30/2022]
Abstract
We report for the first time, a comparison of two approaches for artificially induced triploidy in zebrafish (Danio rerio) using cold shock and heat shock treatments. Of the two methods, heat shock treatment proved more effective with a triploid production rate of 100% in particular females. Subsequently, triploid zebrafish larvae were used as recipients for intraperitoneal transplantation of ovarian and testicular cells originating from vas:EGFP strain in order to verify their suitability for surrogate reproduction. Production of donor-derived sperm was achieved in 23% of testicular cell recipients and 16% of ovarian cell recipients, indicating the suitability of triploids as surrogate hosts for germ cell transplantation. Success of the transplantation was confirmed by positive GFP signal detected in gonads of dissected fish and stripped sperm. Germline transmission was confirmed by fertilization tests followed by PCR analysis of embryos with GFP specific primers. Reproductive success of germline chimera triploids evaluated as fertilization rate and progeny development was comparable to control groups.
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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, Zátiší 728/II, 389 25, Vodňany, Czech Republic.
| | - Tomáš Tichopád
- University of South Bohemia in České Budějovice, Faculty of Fisheries and Protection of Waters, South Bohemian Research Center of Aquaculture and Biodiversity of Hydrocenoses, Zátiší 728/II, 389 25, Vodňany, Czech Republic.
| | - 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, Zátiší 728/II, 389 25, Vodňany, Czech Republic.
| | - Christoph Steinbach
- University of South Bohemia in České Budějovice, Faculty of Fisheries and Protection of Waters, South Bohemian Research Center of Aquaculture and Biodiversity of Hydrocenoses, Zátiší 728/II, 389 25, Vodňany, 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, Zátiší 728/II, 389 25, Vodňany, Czech Republic.
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