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Sharma A, Kumaresan A, Mehta P, Nala N, Singh MK, Palta P, Singla SK, Manik RS, Chauhan MS. Successful transplantation of transfected enriched buffalo (Bubalus bubalis) spermatogonial stem cells to homologous recipients. Theriogenology 2019; 142:441-449. [PMID: 31711692 DOI: 10.1016/j.theriogenology.2019.10.019] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2019] [Revised: 08/06/2019] [Accepted: 10/15/2019] [Indexed: 01/15/2023]
Abstract
Genetic modification of spermatogonial stem cells (SSCs) is an alternative method to pronuclear microinjection and somatic cell nuclear transfer for transgenesis in large animals. In the present study, we optimized the process of homologous SSC transplantation in the water buffalo (Bubalus bubalis) using transfected enriched SSCs generated by a non-viral transfection approach. Firstly, the SSC enrichment efficiencies of extracellular matrix components viz. collagen, gelatin, and Datura stramonium agglutinin (DSA) lectin were determined either individually or in combination with Percoll density gradient centrifugation. The highest enrichment was achieved after differential plating with DSA lectin followed by Percoll density gradient centrifugation. Nucleofection showed greater transfection efficiency (68.55 ± 4.56%, P < 0.05) for enriched SSCs in comparison to fugene HD (6.7 ± 0.25%) and lipofectamine 3000 (15.57 ± 0.74%). The transfected enriched SSCs were transplanted into buffalo males under the ultrasound guidance and testis was removed by castration after 7-8 weeks of transplantation. Persistence and localization of donor cells within recipient seminiferous tubules was confirmed using fluorescent microscopy. Further confirmation was done by flow cytometric evaluation of GFP expressing cells among those isolated from two-step enzymatic digestion of recipient testicular parenchyma. In conclusion, we demonstrated for the first time, generation of buffalo transfected enriched SSCs and their successful homologous transplantation in buffaloes. This study represents the first step towards genetic modifications in buffaloes using SSC transplantation technique.
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Affiliation(s)
- A Sharma
- Embryo Biotechnology Laboratory, Animal Biotechnology Centre, ICAR-National Dairy Research Institute, Karnal, 132001, India.
| | - A Kumaresan
- Theriogenology Lab, Animal Reproduction, Gynecology & Obstetrics, National Dairy Research Institute, Karnal, 132001, Haryana, India.
| | - P Mehta
- Embryo Biotechnology Laboratory, Animal Biotechnology Centre, ICAR-National Dairy Research Institute, Karnal, 132001, India
| | - N Nala
- Embryo Biotechnology Laboratory, Animal Biotechnology Centre, ICAR-National Dairy Research Institute, Karnal, 132001, India
| | - M K Singh
- Embryo Biotechnology Laboratory, Animal Biotechnology Centre, ICAR-National Dairy Research Institute, Karnal, 132001, India
| | - P Palta
- Embryo Biotechnology Laboratory, Animal Biotechnology Centre, ICAR-National Dairy Research Institute, Karnal, 132001, India
| | - S K Singla
- Embryo Biotechnology Laboratory, Animal Biotechnology Centre, ICAR-National Dairy Research Institute, Karnal, 132001, India
| | - R S Manik
- Embryo Biotechnology Laboratory, Animal Biotechnology Centre, ICAR-National Dairy Research Institute, Karnal, 132001, India
| | - M S Chauhan
- Embryo Biotechnology Laboratory, Animal Biotechnology Centre, ICAR-National Dairy Research Institute, Karnal, 132001, India
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Tang L, Bondareva A, González R, Rodriguez-Sosa JR, Carlson DF, Webster D, Fahrenkrug S, Dobrinski I. TALEN-mediated gene targeting in porcine spermatogonia. Mol Reprod Dev 2018; 85:250-261. [PMID: 29393557 DOI: 10.1002/mrd.22961] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2017] [Revised: 01/22/2018] [Accepted: 01/25/2018] [Indexed: 01/05/2023]
Abstract
Spermatogonia represent a diploid germ cell population that includes spermatogonial stem cells. In this report, we describe new methods for isolation of highly enriched porcine spermatogonia based on light scatter properties, and for targeted mutagenesis in porcine spermatogonia using nucleofection and TALENs. We optimized a nucleofection protocol to deliver TALENs specifically targeting the DMD locus in porcine spermatogonia. We also validated specific sorting of porcine spermatogonia based on light scatter properties. We were able to obtain a highly enriched germ cell population with over 90% of cells being UCH-L1 positive undifferentiated spermatogonia. After gene targeting in porcine spermatogonia, indel (insertion or deletion) mutations as a result of non-homologous end joining (NHEJ) were detected in up to 18% of transfected cells. Our report demonstrates for the first time an approach to obtain a live cell population highly enriched in undifferentiated spermatogonia from immature porcine testes, and that gene targeting can be achieved in porcine spermatogonia which will enable germ line modification.
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Affiliation(s)
- Lin Tang
- Department of Comparative Biology and Experimental Medicine, Faculty of Veterinary Medicine, University of Calgary, Calgary, Canada
| | - Alla Bondareva
- Department of Comparative Biology and Experimental Medicine, Faculty of Veterinary Medicine, University of Calgary, Calgary, Canada
| | - Raquel González
- Department of Comparative Biology and Experimental Medicine, Faculty of Veterinary Medicine, University of Calgary, Calgary, Canada
| | - Jose R Rodriguez-Sosa
- Department of Comparative Biology and Experimental Medicine, Faculty of Veterinary Medicine, University of Calgary, Calgary, Canada
| | | | | | | | - Ina Dobrinski
- Department of Comparative Biology and Experimental Medicine, Faculty of Veterinary Medicine, University of Calgary, Calgary, Canada
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Hassanane MS, El Makawy AI, Helalia SM, Abdoon AS, Khalil KM, Ghanem TA, Tohamy AM, Sun XF, Shen W. First study of sperm mediated gene transfer in Egyptian river buffalo. J Genet Eng Biotechnol 2017; 15:475-482. [PMID: 30647689 PMCID: PMC6296624 DOI: 10.1016/j.jgeb.2017.06.003] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2016] [Revised: 05/08/2017] [Accepted: 06/06/2017] [Indexed: 01/13/2023]
Abstract
The present study was carried out to find the best treatments for enhancing the ration of insertion of a desired gene construct (pEGFP-N1) onto the sperm of buffalo as the first step for the production of transgenic buffalo using sperm mediated gene transfer (SMGT). The tested conditions were plasmid DNA concentration, sperm concentration, transfecting agent concentration: Dimethyle sulphoxide (DMSO) and time of transfection. The study proved that the best conditions for producing transgenic embryos were incubation sperm solution its concentration is 107/ml sperm with 3% DMSO: with 20 µg/ml from the linarized DNA, for 15 min at 4 °C are the best conditions to produce transgenic buffalo embryo using sperm mediated gene transfer.
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Key Words
- ANOVA, analysis of variance
- Buffalo embryos
- CCC, covalently closed circular
- COCs, Cumulus oocyte complexes
- DMSO
- DMSO, Dimethyle sulphoxide
- EGFP
- EGFP, enhanced green fluorescent protein
- IVF, in vitro fertilization
- MII, second meiotic division
- OD, optical density
- PBS, Phosphate buffer saline
- SMGT
- SMGT, sperm mediated gene transfer
- TCM199, tissue culture medium
- Transgenic
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Affiliation(s)
- Mohamed S. Hassanane
- Cell Biology Department, Genetic Engineering and Biotechnology Division, National Research Centre, Egypt
| | - Aida I. El Makawy
- Cell Biology Department, Genetic Engineering and Biotechnology Division, National Research Centre, Egypt
| | - Sahar M. Helalia
- Cell Biology Department, Genetic Engineering and Biotechnology Division, National Research Centre, Egypt
| | - Ahmed S. Abdoon
- Animal Reproduction and Artificial Insemination Department, Veterinary Research Division, National Research Centre, Egypt
| | - Kamal M.A. Khalil
- Genetics and Cytology Dept., Genetic Engineering and Biotechnology Division, National Research Centre, Egypt
| | | | - Amany M. Tohamy
- Zoology Department, Faculty of Science, Helwan University, Egypt
| | - Xiao-Feng Sun
- Institute of Reproductive Sciences, College of Animal Science and Technology, Qingdao Agricultural University, Qingdao 266109, China
| | - Wei Shen
- Institute of Reproductive Sciences, College of Animal Science and Technology, Qingdao Agricultural University, Qingdao 266109, China
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Lentiviral transgenesis in mice via a simple method of viral concentration. Theriogenology 2016; 86:1427-1435. [PMID: 27264740 DOI: 10.1016/j.theriogenology.2016.04.088] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2016] [Accepted: 04/29/2016] [Indexed: 01/04/2023]
Abstract
Transgenic animals are important in vivo models for biological research. However, low transgenic rates are commonly reported in the literature. Lentiviral transgenesis is a promising method that has greater efficiency with regard to generating transgenic animals, although the transgenic rate of this approach is highly dependent on different transgenes and concentrated lentiviruses. In this study, we modified a method to concentrate lentiviruses using a table centrifuge, commonly available in most laboratories, and carried out analysis of the transgenic efficiency in mice. Based on 26 individual constructs and 627 live pups, we found that the overall transgenic rate was more than 30%, which is higher than obtained with pronuclear microinjection. In addition, we did not find any significant differences in transgenic efficiency when the size of inserts was less than 5000 bp. These results not only show that our modified method can successfully generate transgenic mice but also suggest that this approach could be generally applied to different constructs when the size of inserts is less than 5000 bp. It is anticipated that the results of this study can help encourage the wider laboratory use of lentiviral transgenesis in mice.
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Zaniboni A, Merlo B, Zannoni A, Bernardini C, Lavitrano M, Forni M, Mari G, Bacci ML. Expression of fluorescent reporter protein in equine embryos produced through intracytoplasmic sperm injection mediated gene transfer (ICSI-MGT). Anim Reprod Sci 2013; 137:53-61. [DOI: 10.1016/j.anireprosci.2012.12.010] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2012] [Revised: 12/08/2012] [Accepted: 12/13/2012] [Indexed: 01/25/2023]
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Zeng W, Tang L, Bondareva A, Honaramooz A, Tanco V, Dores C, Megee S, Modelski M, Rodriguez-Sosa JR, Paczkowski M, Silva E, Wheeler M, Krisher RL, Dobrinski I. Viral transduction of male germline stem cells results in transgene transmission after germ cell transplantation in pigs. Biol Reprod 2013; 88:27. [PMID: 23221397 DOI: 10.1095/biolreprod.112.104422] [Citation(s) in RCA: 46] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023] Open
Abstract
Genetic modification of germline stem cells (GSCs) is an alternative approach to generate large transgenic animals where transgenic GSCs are transplanted into a recipient testis to generate donor-derived transgenic sperm. The objective of the present study was to explore the application of viral vectors in delivering an enhanced green fluorescent protein (EGFP) transgene into GSCs for production of transgenic gametes through germ cell transplantation. Both adeno-associated virus (AAV)- and lentivirus (LV)-based vectors were effective in transducing pig GSCs, resulting in the production of transgenic sperm in recipient boars. Twenty-one boars treated with busulfan to deplete endogenous GSCs and nine nontreated boars received germ cell transplantation at 12 wk of age. Semen was collected from recipient boars from 5 to 7 mo posttransplantation when boars became sexually mature, and semen collection continued for as long as 5 yr for some boars. The percentage of ejaculates that were positive for the EGFP transgene ranged from 0% to 54.8% for recipients of AAV vector-transduced germ cells (n = 17) and from 0% to 25% for recipients of LV vector-transduced germ cells (n = 5). When semen from two AAV recipients was used for in vitro fertilization (IVF), 9.09% and 64.3% of embryos were transgenic. Semen collected from two LV-vector recipients produced 7.7% and 26.3% transgenic IVF embryos. Here, we not only demonstrated AAV-mediated GSC transduction in another large animal model (pigs) but also showed, to our knowledge for the first time, that LV-mediated GSC transduction resulted in transgene transmission in pigs.
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Affiliation(s)
- Wenxian Zeng
- College of Animal Science and Technology, Northwest A&F University, 22 Xi-Nong Road, Yangling, Shaanxi 712100, China
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Zeng W, Tang L, Bondareva A, Luo J, Megee SO, Modelski M, Blash S, Melican DT, Destrempes MM, Overton SA, Gavin WG, Ayres S, Echelard Y, Dobrinski I. Non-viral transfection of goat germline stem cells by nucleofection results in production of transgenic sperm after germ cell transplantation. Mol Reprod Dev 2012; 79:255-61. [PMID: 22231935 DOI: 10.1002/mrd.22014] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2011] [Accepted: 12/07/2011] [Indexed: 12/27/2022]
Abstract
Germline stem cells (GSCs) can be used for large animal transgenesis, in which GSCs that are genetically manipulated in vitro are transplanted into a recipient testis to generate donor-derived transgenic sperm. The objectives of this study were to explore a non-viral approach for transgene delivery into goat GSCs and to investigate the efficiency of nucleofection in producing transgenic sperm. Four recipient goats received fractionated irradiation at 8 weeks of age to deplete endogenous GSCs. Germ cell transplantations were performed 8-9 weeks post-irradiation. Donor cells were collected from testes of 9-week-old goats, enriched for GSCs by Staput velocity sedimentation, and transfected by nucleofection with a transgene construct harboring the human growth hormone gene under the control of the goat beta-casein promoter (GBC) and a chicken beta-globin insulator (CBGI) sequence upstream of the promoter. For each recipient, transfected cells from 10 nucleofection reactions were pooled, mixed with non-transfected cells to a total of 1.5 × 10(8) cells in 3 ml, and transplanted into one testis (n = 4 recipients) by ultrasound-guided cannulation of the rete testis. The second testis of each recipient was removed. Semen was collected, starting at 9 months after transplantation, for a period of over a year (a total of 62 ejaculates from four recipients). Nested genomic PCR for hGH and CBGI sequences demonstrated that 31.3% ± 12.6% of ejaculates were positive for both hGH and CBGI. This study provides proof-of-concept that non-viral transfection (nucleofection) of primary goat germ cells followed by germ cell transplantation results in transgene transmission to sperm in recipient goats.
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Affiliation(s)
- W Zeng
- Center for Animal Transgenesis and Germ Cell Research, Department of Clinical Studies, New Bolton Center, School of Veterinary Medicine, University of Pennsylvania, Kennett Square, Pennsylvania, USA
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Zhao Y, Yu M, Wang L, Li Y, Fan J, Yang Q, Jin Y. Spontaneous uptake of exogenous DNA by goat spermatozoa and selection of donor bucks for sperm-mediated gene transfer. Mol Biol Rep 2011; 39:2659-64. [PMID: 21667250 DOI: 10.1007/s11033-011-1019-4] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2010] [Accepted: 06/02/2011] [Indexed: 01/19/2023]
Abstract
Sperm-mediated gene transfer (SMGT) has been long heralded as a faster and cheaper alternative to more commonly used methods of producing transgenic animals. In this study, the capra semen ejaculates were pooled together and then incubated in vitro with DIG-labeled DNA. The binding and internalizing rates were observed by the in situ hybridization methods. We also compared the standard sperm parameters and the efficiencies of interaction with exogenous DNA of 60 individuals to select donor bucks for SMGT. It was showed that labeled exogenous DNA was detected in different localizations in spermatozoa but genuine DNA uptake, in contrast to mere binding, seems to be limited to the postacrosomal region. The removal of seminal plasma increased significantly (P < 0.01) the capability in picking up exogenous DNA. Use of frozen-thawed semen (without cryoprotectant agents) and Triton X-100 treatment also increased significantly (P < 0.01) the DNA-binding capacity, but reduced the sperm viability. The binding rates (the proportion of labeled-DNA positive spermatozoa to all the spermatozoa counted) of 60 buck individuals were in the range of 3.08-73.39%, and the internalizing rates (the proportion of DNaseI-treated labeled-DNA positive spermatozoa to all the spermatozoa counted) were 4.83-70.00%. About 8.34% (5/60) bucks showed high binding, but low internalizing ability. Chi-square test showed that there was significant difference among the breeds (x(2) = 26.515, P < 0.01). Eight individual bucks that demonstrated high DNA uptake were selected for SMGT. It was demonstrated that the goat spermatozoa was capable of spontaneous uptake of exogenous DNA. Seminal fluid inhibits DNA uptake and that membrane disruption increases DNA binding but greatly diminishes uptake.
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Affiliation(s)
- Yongju Zhao
- College of Animal Science and Technology, Chongqing Key Laboratory of Forage & Herbivore, Southwest University, Beibei, Chongqing 400716, People's Republic of China.
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Yang Y, Honaramooz A. Efficient purification of neonatal porcine gonocytes with Nycodenz and differential plating. Reprod Fertil Dev 2011; 23:496-505. [DOI: 10.1071/rd10042] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2010] [Accepted: 11/01/2010] [Indexed: 12/24/2022] Open
Abstract
Gonocytes are the only type of germ cells present in the postnatal testis and give rise to spermatogonial stem cells. Purification of gonocytes has important implications for the study and manipulation of these cells and may provide insights for the ongoing investigation of the male germline stem cells. To obtain a pure population of gonocytes from piglet testis cells, a wide range of Nycodenz concentrations were investigated for density gradient centrifugation. We also examined differential plating of testis cells for various culture durations with different extracellular matrix (ECM) components (fibronectin, poly-d-lysine, poly-l-lysine, laminin and collagen Types I and IV). Gonocytes were highly enriched in pellets of testis cells after using 17% Nycodenz centrifugation to a purity of 81 ± 9%. After culturing testis cells on plates precoated with different ECM components for 120 min, the proportion of gonocytes increased among non-adherent cells (suspended in the medium), with fibronectin or poly-d-lysine resulting in the greatest (up to 85%) and laminin in the lowest (54%) gonocyte proportion. Combining the most promising ECM coatings (fibronectin and poly-d-lysine) and further extension of their culture duration to 240 min did not improve final gonocyte purity. However, centrifugation with 17% Nycodenz followed by differential plating with fibronectin and poly-d-lysine coating further purified gonocytes among the collected cells to >90%. These results provide a simple, quick and efficient approach for obtaining highly enriched populations of piglet gonocytes for use in the study and manipulation of these germline stem cells.
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Wang L, Fan J, Yu M, Zheng S, Zhao Y. Association of goat (Capra hircus) CD4 gene exon 6 polymorphisms with ability of sperm internalizing exogenous DNA. Mol Biol Rep 2010; 38:1621-8. [DOI: 10.1007/s11033-010-0272-2] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2010] [Accepted: 09/02/2010] [Indexed: 10/19/2022]
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Sperm-mediated gene transfer–treated spermatozoa maintain good quality parameters and in vitro fertilization ability in swine. Theriogenology 2009; 72:1163-70. [DOI: 10.1016/j.theriogenology.2009.06.033] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2009] [Revised: 05/29/2009] [Accepted: 06/22/2009] [Indexed: 11/24/2022]
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Blache D, Martin GB, Maloney SK. Towards ethically improved animal experimentation in the study of animal reproduction. Reprod Domest Anim 2008; 43 Suppl 2:8-14. [PMID: 18638100 DOI: 10.1111/j.1439-0531.2008.01137.x] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The ethics of animal-based research is a continuing area of debate, but ethical research protocols do not prevent scientific progress. In this paper, we argue that our current knowledge of the factors that affect reproductive processes provides researchers with a solid foundation upon which they can conduct more ethical research and simultaneously produce data of higher quality. We support this argument by showing how a deep understanding of the genetics, nutrition and temperament of our experimental animals can improve compliance with two of the '3 Rs', reduction and refinement, simply by offering better control over the variance in our experimental model. The outcome is a better experimental design, on both ethical and scientific grounds.
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Affiliation(s)
- D Blache
- UWA Institute of Agriculture M082, The University of Western Australia, Crawley, WA, Australia.
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