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Uhlmannsiek L, Shen H, Eylers H, Martinsson G, Sieme H, Wolkers WF, Oldenhof H. Preserving frozen stallion sperm on dry ice using polymers that modulate ice crystalization kinetics. Cryobiology 2024; 114:104852. [PMID: 38295927 DOI: 10.1016/j.cryobiol.2024.104852] [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: 12/12/2023] [Revised: 01/19/2024] [Accepted: 01/19/2024] [Indexed: 02/08/2024]
Abstract
Cryopreserved semen is routinely shipped in liquid nitrogen. Dry ice could serve as an alternative coolant, however, frozen storage above liquid nitrogen temperatures (LN2, -196 °C) may negatively affect shelf-life and cryosurvival. In this study, we determined critical temperatures for storage of cryopreserved stallion sperm. We evaluated: (i) effects of cooling samples to different subzero temperatures (-10 °C to -80 °C) prior to storing in LN2, (ii) stability at different storage temperatures (i.e., in LN2, dry ice, -80 °C and -20 °C freezers, 5 °C refrigerator), and (iii) sperm cryosurvival during storage on dry ice (i.e., when kept below -70 °C and during warming). Furthermore, (iv) we analyzed if addition of synthetic polymers (PVP-40, Ficoll-70) modulates ice crystallization kinetics and improves stability of cryopreserved specimens. Sperm motility and membrane intactness were taken as measures of cryosurvival, and an artificial insemination trial was performed to confirm fertilizing capacity. We found that adding PVP-40 or Ficoll-70 to formulations containing glycerol reduced ice crystal sizes and growth during annealing. Post-thaw sperm viability data indicated that samples need to be cooled below -40 °C before they can be safely plunged and stored in LN2. No negative effects of relocating specimens from dry ice to LN2 and vice versa became apparent. However, sample warming above -50 °C during transport in dry ice should be avoided to ensure preservation of viability and fertility. Moreover, addition of PVP-40 or Ficoll-70 was found to increase sperm cryosurvival, especially under non-ideal storage conditions where ice recrystallization may occur.
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Affiliation(s)
- Laura Uhlmannsiek
- Unit for Reproductive Medicine - Clinic for Horses, University of Veterinary Medicine Hannover, Hannover, Germany; National Stud of Lower Saxony, Celle, Germany
| | - Hang Shen
- Biostabilization Laboratory - Lower Saxony Centre for Biomedical Engineering, Implant Research and Development, Hannover, Germany
| | - Heinke Eylers
- Unit for Reproductive Medicine - Clinic for Horses, University of Veterinary Medicine Hannover, Hannover, Germany
| | | | - Harald Sieme
- Unit for Reproductive Medicine - Clinic for Horses, University of Veterinary Medicine Hannover, Hannover, Germany
| | - Willem F Wolkers
- Unit for Reproductive Medicine - Clinic for Horses, University of Veterinary Medicine Hannover, Hannover, Germany; Biostabilization Laboratory - Lower Saxony Centre for Biomedical Engineering, Implant Research and Development, Hannover, Germany
| | - Harriëtte Oldenhof
- Unit for Reproductive Medicine - Clinic for Horses, University of Veterinary Medicine Hannover, Hannover, Germany; Biostabilization Laboratory - Lower Saxony Centre for Biomedical Engineering, Implant Research and Development, Hannover, Germany.
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Dey MK, Devireddy RV. Adult Stem Cells Freezing Processes and Cryopreservation Protocols. Methods Mol Biol 2024; 2783:53-89. [PMID: 38478226 DOI: 10.1007/978-1-0716-3762-3_5] [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] [Indexed: 03/26/2024]
Abstract
The development of simple but effective storage protocols for adult stem cells will greatly enhance their use and utility in tissue-engineering applications. Cryopreservation has shown the most promise but is a fairly complex process, necessitating the use of chemicals called cryoprotective agents (CPAs), freezing equipment, and obviously, storage in liquid nitrogen. The purpose of this chapter is to present a general overview of cryopreservation storage techniques and the optimal protocols/results obtained in our laboratory for long-term storage of adult stem cells using freezing storage.
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Affiliation(s)
- Mohan Kumar Dey
- Bioengineering Laboratory, Department of Mechanical Engineering, Louisiana State University, Baton Rouge, LA, USA
| | - Ram V Devireddy
- Bioengineering Laboratory, Department of Mechanical Engineering, Louisiana State University, Baton Rouge, LA, USA.
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Barbosa BB, Evangelista ITA, Soares ARB, Leão DL, Pereira RJG, Domingues SFS. Kinetic vitrification: concepts and perspectives in animal sperm cryopreservation. Anim Reprod 2023; 20:e20220096. [PMID: 37228692 PMCID: PMC10205064 DOI: 10.1590/1984-3143-ar2022-0096] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2022] [Accepted: 04/04/2023] [Indexed: 05/27/2023] Open
Abstract
Sperm cryopreservation is an important tool for genetic diversity management programs and the conservation of endangered breeds and species. The most widely used method of sperm conservation is slow freezing, however, during the process, sperm cells suffer from cryoinjury, which reduces their viability and fertility rates. One of the alternatives to slow freezing is vitrification, that consist on rapid freezing, in which viable cells undergo glass-like solidification. This technology requires large concentrations of permeable cryoprotectants (P- CPA's) which increase the viscosity of the medium to prevent intracellular ice formation during cooling and warming, obtaining successful results in vitrification of oocytes and embryos. Unfortunately, this technology failed when applied to vitrification of sperm due to its higher sensitivity to increasing concentrations of P-CPAs. Alternatively, a technique termed 'kinetic sperm vitrification' has been used and consists in a technique of permeant cryoprotectant-free cryopreservation by direct plunging of a sperm suspension into liquid nitrogen. Some of the advantages of kinetic vitrification are the speed of execution and no rate-controlled equipment required. This technique has been used successfully and with better results for motility in human (50-70% motility recovery), dog (42%), fish (82%) and donkey (21.7%). However, more studies are required to improve sperm viability after devitrification, especially when it comes to motility recovery. The objective of this review is to present the principles of kinetic vitrification, the main findings in the literature, and the perspectives for the utilization of this technique as a cryopreservation method.
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Affiliation(s)
- Bianca Barreto Barbosa
- Laboratório de Biotecnologia e Medicina de Animais da Amazônia, Universidade Federal do Pará, Castanhal, PA, Brasil.
- Programa de Pós-graduação em Saúde e Produção Animal na Amazônia, Universidade Federal Rural da Amazônia, Belém, PA, Brasil.
| | - Inara Tayná Alves Evangelista
- Laboratório de Biotecnologia e Medicina de Animais da Amazônia, Universidade Federal do Pará, Castanhal, PA, Brasil.
| | - Airton Renan Bastos Soares
- Laboratório de Biotecnologia e Medicina de Animais da Amazônia, Universidade Federal do Pará, Castanhal, PA, Brasil.
| | - Danuza Leite Leão
- Laboratório de Biotecnologia e Medicina de Animais da Amazônia, Universidade Federal do Pará, Castanhal, PA, Brasil.
- Instituto de Desenvolvimento Sustentável Mamirauá, Tefé, AM, Brasil.
| | - Ricardo José Garcia Pereira
- Departamento de Reprodução Animal, Faculdade de Medicina Veterinária e Zootecnia, Universidade de São Paulo, São Paulo, SP, Brasil.
| | - Sheyla Farhayldes Souza Domingues
- Laboratório de Biotecnologia e Medicina de Animais da Amazônia, Universidade Federal do Pará, Castanhal, PA, Brasil.
- Programa de Pós-graduação em Saúde e Produção Animal na Amazônia, Universidade Federal Rural da Amazônia, Belém, PA, Brasil.
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Testicular Tissue Vitrification: a Promising Strategy for Male Fertility Preservation. Reprod Sci 2022; 30:1687-1700. [DOI: 10.1007/s43032-022-01113-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2022] [Accepted: 09/16/2022] [Indexed: 11/24/2022]
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Abstract
Vitrification is an alternative to cryopreservation by freezing that enables hydrated living cells to be cooled to cryogenic temperatures in the absence of ice. Vitrification simplifies and frequently improves cryopreservation because it eliminates mechanical injury from ice, eliminates the need to find optimal cooling and warming rates, eliminates the importance of differing optimal cooling and warming rates for cells in mixed cell type populations, eliminates the need to find a frequently imperfect compromise between solution effects injury and intracellular ice formation, and can enable chilling injury to be "outrun" by using rapid cooling without a risk of intracellular ice formation. On the other hand, vitrification requires much higher concentrations of cryoprotectants than cryopreservation by freezing, which introduces greater risks of both osmotic damage and cryoprotectant toxicity. Fortunately, a large number of remedies for the latter problem have been discovered over the past 35 years, and osmotic damage can in most cases be eliminated or adequately controlled by paying careful attention to cryoprotectant introduction and washout techniques. Vitrification therefore has the potential to enable the superior and convenient cryopreservation of a wide range of biological systems (including molecules, cells, tissues, organs, and even some whole organisms), and it is also increasingly recognized as a successful strategy for surviving harsh environmental conditions in nature. But the potential of vitrification is sometimes limited by an insufficient understanding of the complex physical and biological principles involved, and therefore a better understanding may not only help to improve present outcomes but may also point the way to new strategies that may be yet more successful in the future. This chapter accordingly describes the basic principles of vitrification and indicates the broad potential biological relevance of this alternative method of cryopreservation.
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Viudes-de-Castro MP, Talaván AG, Vicente JS. Evaluation of dextran for rabbit sperm cryopreservation: Effect on frozen-thawed rabbit sperm quality variables and reproductive performance. Anim Reprod Sci 2021; 226:106714. [PMID: 33556752 DOI: 10.1016/j.anireprosci.2021.106714] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2020] [Revised: 01/22/2021] [Accepted: 01/23/2021] [Indexed: 12/11/2022]
Abstract
Effects were analysed of dextran supplementation to Me2SO and acetamide rabbit semen freezing extenders on quality characteristics of rabbit spermatozoa and reproductive performance. The final concentration of cryoprotectants in pooled semen samples was 12.4 % Me2SO for the A extenders, 10.7 % Me2SO and 2.9 % acetamide for the D extenders and 8.9 % Me2SO and 2.9 % acetamide in F extenders, with a supplementation of 1.7 % sucrose in all cases. There was not inclusion of dextran in the A0, D0, F0; while 5 % dextran was included in A5, D5, F5 and 10 % dextran in A10, D10 and F10 extenders. Sperm motility and viability rates were similar with use of the different extenders. Acrosome integrity after the freeze-thawing processes, however, was markedly greater when there was dextran supplementation of D and F extenders. Prolificacy was affected by extender composition. When there was artificial insemination (AI) using semen cryopreserved in the A extenders, number of kits born was similar to when there was AI with fresh semen when there was inclusion of 5% dextran for cryopreservation, while there was no effect on prolificacy when there was cryopreservation of semen using the D and F extenders. In conclusion, dextran supplementation of extenders containing Me2SO and acetamide resulted in greater acrosome integrity. Furthermore, when there was AI using sperm preserved in cryo-diluents containing an intermediate concentration of Me2SO, combined with inclusion of 5 % dextran, there was a marked beneficial effect on rabbit doe reproductive performance.
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Affiliation(s)
- María P Viudes-de-Castro
- Animal Technology and Research Center (CITA-IVIA), Polígono La Esperanza nº 100, 12400 Segorbe, Castellón, Spain.
| | - Amparo G Talaván
- Institute of Science and Animal Technology (ICTA), Universitat Politècnica de València, 46022 Valencia, Spain
| | - José S Vicente
- Institute of Science and Animal Technology (ICTA), Universitat Politècnica de València, 46022 Valencia, Spain
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Campbell JB, Dosch A, Hunt CM, Dotson EM, Benedict MQ, Rajamohan A, Rinehart JP. Physiological responses to cryoprotectant treatment in an early larval stage of the malaria mosquito, Anopheles gambiae. Cryobiology 2020; 99:114-121. [PMID: 33279509 DOI: 10.1016/j.cryobiol.2020.12.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2020] [Revised: 10/27/2020] [Accepted: 12/01/2020] [Indexed: 10/22/2022]
Abstract
The development of cryopreservation protocols for Anopheles gambiae could significantly improve research and control efforts. Cryopreservation of any An. gambiae life stage has yet to be successful. The unique properties of embryos have proven to be resistant to any practical cryoprotectant loading. Therefore, we have chosen to investigate early non-feeding first instar larvae as a potential life stage for cryopreservation. In order to determine an appropriate cryoprotective compound, larvae were treated with progressively better glass-forming cryoprotective mixtures. Toxicity evaluation in combination with calorimetry-based water content and supercooling point depression assessments were used to determine the cryoprotectants that could be used for cryostorage of viable larvae. Approximately 35-75% of the larvae were viable after reasonably high osmotic and biochemical challenge. This study provides ample evidence for an active osmoregulatory response in the Anopheles larvae to counter the permeation of cryoprotectants from the surrounding medium. The data show a strong correlation between the larval mortality and water content, indicating an osmoregulatory crisis in the larva due to certain cryoprotectants such as the higher concentrations of ethane diol (ED). The observations also indicate that the ability of the larvae to regulate permeation and water balance ceases at or within 20 min of cryoprotectant exposure, but this is strongly influenced by the treatment temperature. Among the compound cryoprotectants tested, 25% ED + 10% dimethyl sulfoxide (DMSO) and 40% ED + 0.5 M trehalose seem to present a compromise between viability, larval water content, supercooling point depression, and glass forming abilities.
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Affiliation(s)
- Jacob B Campbell
- Insect Genetics and Biochemistry Unit, Biosciences Research Lab, USDA-ARS, Fargo, ND, USA.
| | - Andrew Dosch
- Insect Genetics and Biochemistry Unit, Biosciences Research Lab, USDA-ARS, Fargo, ND, USA
| | - Catherine M Hunt
- Center for Disease Control and Prevention, Division of Parasitic Diseases and Malaria, Entomology Branch, Atlanta, GA, USA
| | - Ellen M Dotson
- Center for Disease Control and Prevention, Division of Parasitic Diseases and Malaria, Entomology Branch, Atlanta, GA, USA
| | - Mark Q Benedict
- Center for Disease Control and Prevention, Division of Parasitic Diseases and Malaria, Entomology Branch, Atlanta, GA, USA
| | - Arun Rajamohan
- Insect Genetics and Biochemistry Unit, Biosciences Research Lab, USDA-ARS, Fargo, ND, USA
| | - Joseph P Rinehart
- Insect Genetics and Biochemistry Unit, Biosciences Research Lab, USDA-ARS, Fargo, ND, USA
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Di Iorio M, Rusco G, Iampietro R, Colonna MA, Zaniboni L, Cerolini S, Iaffaldano N. Finding an Effective Freezing Protocol for Turkey Semen: Benefits of Ficoll as Non-Permeant Cryoprotectant and 1:4 as Dilution Rate. Animals (Basel) 2020; 10:ani10030421. [PMID: 32138164 PMCID: PMC7143073 DOI: 10.3390/ani10030421] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2020] [Revised: 02/25/2020] [Accepted: 03/01/2020] [Indexed: 11/29/2022] Open
Abstract
Simple Summary The most adopted biotechnology for the conservation of genetic resources in avian species is semen cryopreservation. Therefore, the identification of a reference cryopreservation procedure represents a key point for ensuring the long-term conservation of genetic diversity in birds, through the implementation of a semen cryobank. In this study, our goal was to discover an effective freezing protocol for Meleagris gallopavo in order to realize the first Italian semen cryobank of autochthonous chicken and turkey breeds within our project (TuBAvI). For this purpose, we investigated the effects of three non-permeant cryoprotectants (sucrose, trehalose, and Ficoll) and two dilution rates (1:2 and 1:4) on the in vitro cryosurvivability of turkey spermatozoa. After thawing, the best semen quality was found in semen frozen in the presence of Ficoll and diluted at a final rate of 1:4. This paper provides encouraging results, however further studies are programmed to standardize the semen cryopreservation protocol. Abstract The present study aimed to find an effective cryopreservation protocol for turkey semen through the combined use of dimethylsulfoxide (DMSO) and three non-permeant cryoprotectants (NP-CPAs), sucrose, trehalose, and Ficoll 70. In addition, the action of two dilution rates (1:2 and 1:4) were also investigated. Semen was processed according to two final dilution rates and the following treatments: Tselutin extender (TE)/DMSO (control), TE/DMSO + sucrose or trehalose 50, 100, 200, or 400 mM, and TE/DMSO + Ficoll 0.5, 0.75, 1, or 1.5 mM. In total 26 different combinations treatments were achieved. The diluted semen was filled up into straws and frozen on liquid nitrogen vapor. The post-thawing sperm quality was assessed by analyzing motility, membrane integrity, osmotic resistance, and DNA integrity. The results obtained revealed a significant effect of NP-CPA concentration on total and progressive motility, on most of the kinetic parameters, on membrane integrity and DNA integrity, while the post-thaw quality was less affected by dilution rate. The highest post-thaw quality for all sperm quality parameters assessed except curvilinear velocity (VCL) and DNA integrity were found in semen frozen with 1 mM Ficoll/1:4 (p < 0.05). Our findings provide an important contribution for the identification of a reference procedure for turkey semen cryopreservation, in order to create the first national avian semen cryobank.
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Affiliation(s)
- Michele Di Iorio
- Department of Agricultural, Environmental and Food Sciences, University of Molise, 86100 Campobasso CB, Italy; (M.D.I.); (G.R.); (R.I.)
| | - Giusy Rusco
- Department of Agricultural, Environmental and Food Sciences, University of Molise, 86100 Campobasso CB, Italy; (M.D.I.); (G.R.); (R.I.)
| | - Roberta Iampietro
- Department of Agricultural, Environmental and Food Sciences, University of Molise, 86100 Campobasso CB, Italy; (M.D.I.); (G.R.); (R.I.)
| | - Maria Antonietta Colonna
- Department of Agricultural and Environmental Science, University of Bari Aldo Moro, 70126 Bari BA, Italy;
| | - Luisa Zaniboni
- Department of Veterinary Medicine, University of Milan, 20122 Milano MI, Italy;
| | - Silvia Cerolini
- Department of Veterinary Medicine, University of Milan, 20122 Milano MI, Italy;
| | - Nicolaia Iaffaldano
- Department of Agricultural, Environmental and Food Sciences, University of Molise, 86100 Campobasso CB, Italy; (M.D.I.); (G.R.); (R.I.)
- Correspondence: ; Tel.: +39 0874 404697; Fax: +39 0874 404855
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Do VH, Catt S, Kinder JE, Walton S, Taylor-Robinson AW. Vitrification of in vitro-derived bovine embryos: targeting enhancement of quality by refining technology and standardising procedures. Reprod Fertil Dev 2020; 31:837-846. [PMID: 30625115 DOI: 10.1071/rd18352] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2018] [Accepted: 12/06/2018] [Indexed: 01/02/2023] Open
Abstract
Bovine invitro fertilisation technology has been widely exploited in commercial settings. The majority of invitro-derived cattle embryos are transferred into recipient cows as recently collected (i.e. 'fresh') embryos due to the lack of a reliable cryopreservation method that results in favourable pregnancy rates following transfer of thawed embryos. This is a primary reason for the poor industry uptake of this extreme temperature freezing process. Numerous investigations into vitrification have revealed the importance of rapid cooling and warming rates, enhancing embryo viability after cryopreservation compared with conventional slow freezing. Those studies spawned a considerable assortment of cryovessels and diversity of procedures, delivering variable rates of success, which makes performing vitrification consistently a practical challenge. Hence, further research is required in order to both optimise and standardise vitrification methodology and to design a cryovessel that enables direct transfer of vitrified embryos to recipients after warming. In parallel with improvements in vitrification, it is important to continue to raise the quality of invitro-derived cattle embryos through modifications in laboratory culture techniques. The twin goals of methodology refinement and standardisation, leading to embryo quality enhancement, are each imperative if invitro fertilisation technology is to be adopted in the field.
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Affiliation(s)
- V H Do
- School of Health, Medical and Applied Sciences, Central Queensland University, Rockhampton, Qld 4702, Australia
| | - S Catt
- Education Program in Reproduction and Development, Department of Obstetrics and Gynaecology, Monash University, Clayton, Vic. 3168, Australia
| | - J E Kinder
- Department of Animal Sciences, Ohio State University, OH 43210, USA
| | - S Walton
- Australian Reproductive Technologies, Mt Chalmers, Qld 4702, Australia
| | - A W Taylor-Robinson
- School of Health, Medical and Applied Sciences, Central Queensland University, Brisbane, Qld 4000, Australia
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Shahsavari MH, Moghaddam G, Daghigh Kia H, Ribeiro Rodrigues AP. Effects of new synthetic cryoprotectant agents on histological characteristics of various classes of vitrified bovine pre-antral follicles. VETERINARY RESEARCH FORUM : AN INTERNATIONAL QUARTERLY JOURNAL 2019; 10:9-16. [PMID: 31183010 PMCID: PMC6522187 DOI: 10.30466/vrf.2019.34306] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/19/2017] [Indexed: 11/13/2022]
Abstract
Previous studies have reported many discrepancies about the best type and concentration of cryoprotective agents (CPAs) and biological variability among various pre-antral follicle classes after cryopreservation of ovarian tissue. The aim of this study was to investigate the impacts of some synthetic polymers on histological characteristics of different types of pre-antral follicles after bovine ovarian tissue vitrification. From each bovine ovarian pair, fragments were recovered and immediately fixed for analysis (fresh control group) or submitted to vitrification (sucrose, X-1000, Z-1000 and polyvinylpyrrolidone groups), either followed by in vitro culture for 1 or 5 days. In this case, although, the addition of X-1000 resulted in greater percentages of normal follicles for almost all pre-antral follicle classes compared to those of other groups, there are some exceptions. These results indicate that the inclusion of polyvinylpyrrolidone in the freezing media can improve the morphology of the post-warmed transitional follicles and cultured primordial follicles on day five more than other CPAs. According to the results of this study, it can be concluded that although ovarian tissue cryopreservation is often performed to preserve the primordial follicles, by choosing the best combination of permeating and non-permeating CPAs (synthetic polymers), more advanced stages of bovine pre-antral follicles, transitional, primary and secondary follicles, may also survive the cryopreservation process.
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Affiliation(s)
| | - Gholamali Moghaddam
- Department of Animal Science, Faculty of Agriculture, University of Tabriz, Tabriz, Iran
| | - Hossein Daghigh Kia
- Department of Animal Science, Faculty of Agriculture, University of Tabriz, Tabriz, Iran
| | - Ana Paula Ribeiro Rodrigues
- Faculty of Veterinary Medicine, Laboratory of Manipulation of Oocyte and Preatral Follicles (LAMOFOPA), Postgraduate in Veterinary Science (PPGCV), State University of Ceara, Fortaleza, Ceará, Brazil
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Comparison of cryosurvival and spermatogenesis efficiency of cryopreserved neonatal mouse testicular tissue between three vitrification protocols and controlled-rate freezing. Cryobiology 2018; 84:4-9. [PMID: 30195700 DOI: 10.1016/j.cryobiol.2018.09.001] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2018] [Revised: 09/03/2018] [Accepted: 09/05/2018] [Indexed: 01/15/2023]
Abstract
Grafting of cryopreserved testicular tissue is a promising tool for fertility and testicular function preservation in endangered species, mutant animals, or cancer patients for future use. In this study, we aimed to improve the whole neonatal mouse testicular tissue cryopreservation protocols by comparing cryosurvival, spermatogenesis, and androgen production of grafted testicular tissue after cryopreservation with three different vitrification protocols and an automated computed controlled-rate freezing. Whole neonatal mouse testes were vitrified with various vitrification solutions (V1) 40% EG + 18% Ficoll + 0.35 M Sucrose, (V2) DAP 213 (2 M DMSO + 1 M Acetamid + 3 M PG), or (V3) 15% EG + 15% PG + 0.5 M Sucrose (total solute concentration V1:74.34%, V2:44.0%, and V3:49.22% wt/vol). Alternatively, neonatal testicular tissue was also frozen in 0.7 M DMSO +5% fetal bovine serum using controlled-rate freezing and compared to fresh grafted testicular tissue, sham grafted controls, and the vitrification protocol groups. Fresh (n = 4) and frozen-thawed (n = 4) testes tissues were grafted onto the flank of castrated male NCr Nude recipient mouse. The grafts were harvested after three months. Fresh or frozen-thawed grafts with controlled-rate freezing had the highest rate of tissue survival compared to other vitrified protocols after harvesting (p < 0.05). Both controlled-rate freezing and V1 protocol groups displayed the most advanced stages of spermatogenesis with elongated spermatids and spermatozoa in 17.6 ± 1.3% and 16.3 ± 1.9% of seminiferous tubules based on histopathological evaluation, respectively. Hosts of the testicular graft from controlled-rate freezing had higher levels of serum testosterone compared to all other vitrified-thawed graft groups (p < 0.05). This study shows that completed spermatogenesis from whole neonatal mouse testes were obtained when frozen with controlled-rate freezing and V1 vitrification solution and that testicular cryopreservation efficacy vary with the protocol and vitrification technique.
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12
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Trounson A. Development of in vitro fertilization in Australia. Fertil Steril 2018; 110:19-24. [DOI: 10.1016/j.fertnstert.2018.02.126] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2018] [Accepted: 02/20/2018] [Indexed: 10/28/2022]
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Abidalla M, Roversi PF. Vitrification Assessment: Thermal Analysis of Cryoprotective Aqueous Solutions 1,2 Propanediol and Ethylene Glycol. Biopreserv Biobank 2018; 16:207-216. [PMID: 29746148 DOI: 10.1089/bio.2018.0004] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Cryopreservation of viable cells and cell materials is being developed for biological and biopharmaceutical applications. The inhibition of ice formation during the cooling and warming phase of vitrified living biological samples is important for their survival. The tendency to form glasses (glass transition temperature, Tg) upon cooling in the vitrification solution and the stability of the amorphous state upon warming to determine the critical cooling rate (Vccr) and critical warming rates (Vcwr) are evaluated. The study of thermal properties of ethylene glycol (EG) and 1,2-propanediol (PD) solutions were performed to improve vitrification through better understanding of their molecular mobility and viscosity. Two sets of aqueous solutions were tested. In group A, 35% EG (w/w) was added to different PD concentrations (5%, 10%, and 15%). In group B, 20% PD (w/w) was combined with varying concentrations of EG (20%, 24%, 27%, and 30%). Using the semiempirical model of Boutron, the values of Vccr and Vcwr for group A were 10, 8, <2.5°C/min, and 1.65 × 105, 678, 32°C/min, respectively. For group B, the values were 24, 10, <2.5, <2.5°C/min, and 9.5 × 103, 144, 48, 7°C/min, respectively. While the values of Vccr and Vcwr for 40% EG were 123 and 8.84 × 105°C/min, respectively. The methyl group in PD enhanced the vitreous state, lowering the melting point. Adding a small concentration of PD (3%) to VM3 vitrification solution improved and increased the Tg and enhanced their thermal stability. Analyzing the thermal properties of cryoprotectant is useful when designing the cryopreservation protocols.
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Affiliation(s)
- Muhamad Abidalla
- Consiglio per la Ricerca in Agricoltura E l'analisi Dell'economia Agraria, Centro di ricerca Difesa e Certificazione, Florence, Italy
| | - Pio F Roversi
- Consiglio per la Ricerca in Agricoltura E l'analisi Dell'economia Agraria, Centro di ricerca Difesa e Certificazione, Florence, Italy
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Shaik S, Devireddy R. Cryopreservation Protocols for Human Adipose Tissue Derived Adult Stem Cells. Methods Mol Biol 2018; 1773:231-259. [PMID: 29687394 DOI: 10.1007/978-1-4939-7799-4_19] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
The development of simple but effective storage protocols for adult stem cells will greatly enhance their use and utility in tissue-engineering applications. Cryopreservation has shown to be most promising but is a fairly complex process, necessitating the use of chemicals called cryoprotective agents (CPAs), freezing equipment, and obviously, storage in liquid nitrogen. The purpose of this chapter is to present a general overview of cryopreservation storage techniques and the optimal protocols/results obtained in our laboratory for long-term storage of adult stem cells using freezing storage.
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Affiliation(s)
- Shahensha Shaik
- Bioengineering Laboratory, Department of Mechanical Engineering, Louisiana State University, Baton Rouge, LA, USA.
| | - Ram Devireddy
- Bioengineering Laboratory, Department of Mechanical Engineering, Louisiana State University, Baton Rouge, LA, USA
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Zhao G, Liu X, Zhu K, He X. Hydrogel Encapsulation Facilitates Rapid-Cooling Cryopreservation of Stem Cell-Laden Core-Shell Microcapsules as Cell-Biomaterial Constructs. Adv Healthc Mater 2017; 6:10.1002/adhm.201700988. [PMID: 29178480 PMCID: PMC5729581 DOI: 10.1002/adhm.201700988] [Citation(s) in RCA: 58] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2017] [Revised: 09/30/2017] [Indexed: 01/08/2023]
Abstract
Core-shell structured stem cell microencapsulation in hydrogel has wide applications in tissue engineering, regenerative medicine, and cell-based therapies because it offers an ideal immunoisolative microenvironment for cell delivery and 3D culture. Long-term storage of such microcapsules as cell-biomaterial constructs by cryopreservation is an enabling technology for their wide distribution and ready availability for clinical transplantation. However, most of the existing studies focus on cryopreservation of single cells or cells in microcapsules without a core-shell structure (i.e., hydrogel beads). The goal of this study is to achieve cryopreservation of stem cells encapsulated in core-shell microcapsules as cell-biomaterial constructs or biocomposites. To this end, a capillary microfluidics-based core-shell alginate hydrogel encapsulation technology is developed to produce porcine adipose-derived stem cell-laden microcapsules for vitreous cryopreservation with very low concentration (2 mol L-1 ) of cell membrane penetrating cryoprotective agents (CPAs) by suppressing ice formation. This may provide a low-CPA and cost-effective approach for vitreous cryopreservation of "ready-to-use" stem cell-biomaterial constructs, facilitating their off-the-shelf availability and widespread applications.
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Affiliation(s)
- Gang Zhao
- Department of Electronic Science and Technology, University of Science and Technology of China, Hefei, Anhui, 230027, China
| | - Xiaoli Liu
- Department of Electronic Science and Technology, University of Science and Technology of China, Hefei, Anhui, 230027, China
| | - Kaixuan Zhu
- Department of Electronic Science and Technology, University of Science and Technology of China, Hefei, Anhui, 230027, China
| | - Xiaoming He
- Department of Biomedical Engineering, The Ohio State University, Columbus, OH, 43210, USA
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Baust JM, Vogel MJ, Van Buskirk R, Baust JG. A Molecular Basis of Cryopreservation Failure and its Modulation to Improve Cell Survival. Cell Transplant 2017. [DOI: 10.3727/000000001783986413] [Citation(s) in RCA: 116] [Impact Index Per Article: 16.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Affiliation(s)
- John M. Baust
- Institute of Biomedical Technology, State University of New York, Binghamton, NY 13902
| | - Martin J. Vogel
- Institute of Biomedical Technology, State University of New York, Binghamton, NY 13902
| | - Robert Van Buskirk
- Institute of Biomedical Technology, State University of New York, Binghamton, NY 13902
| | - John G. Baust
- Institute of Biomedical Technology, State University of New York, Binghamton, NY 13902
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Elliott GD, Wang S, Fuller BJ. Cryoprotectants: A review of the actions and applications of cryoprotective solutes that modulate cell recovery from ultra-low temperatures. Cryobiology 2017; 76:74-91. [DOI: 10.1016/j.cryobiol.2017.04.004] [Citation(s) in RCA: 180] [Impact Index Per Article: 25.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2016] [Revised: 04/07/2017] [Accepted: 04/16/2017] [Indexed: 02/08/2023]
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El-Shalofy AS, Moawad AR, Darwish GM, Ismail ST, Badawy AB, Badr MR. Effect of different vitrification solutions and cryodevices on viability and subsequent development of buffalo oocytes vitrified at the germinal vesicle (GV) stage. Cryobiology 2017; 74:86-92. [DOI: 10.1016/j.cryobiol.2016.11.010] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2016] [Revised: 11/18/2016] [Accepted: 11/23/2016] [Indexed: 11/16/2022]
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Gallardo M, Hebles M, Migueles B, Dorado M, Aguilera L, González M, Piqueras P, Lucas A, Montero L, Sánchez-Martín P, Sánchez-Martín F, Risco R. Hydroxypropyl cellulose supplementation in vitrification solutions: a prospective study with donor oocytes. J Assist Reprod Genet 2016; 34:417-422. [PMID: 28028772 DOI: 10.1007/s10815-016-0841-y] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2016] [Accepted: 11/08/2016] [Indexed: 12/26/2022] Open
Abstract
PURPOSE Hydroxypropyl cellulose (HPC), a polysaccharide that forms a viscous gel under low temperatures, is a promising substitute of the blood-derived macromolecules traditionally used in cryopreservation solutions. The performance of a protein-free, fully synthetic set of vitrification and warming solutions was assessed in a matched pair analysis with donor oocytes. METHODS A prospective study including 219 donor MII oocytes was carried out, comparing the laboratory outcomes of oocytes vitrified with HPC-based solutions and their fresh counterparts. The primary performance endpoint was the fertilization rate. Secondary parameters assessed were embryo quality on days 2 and 3. RESULTS 70/73 (95.9%) vitrified MII oocytes exhibited morphologic survival 2 h post-warming, with 49 (70.0%) presented normal fertilization, compared to 105 of 146 (71.9%) MII fresh oocytes. Similar embryo quality was observed in both groups. A total of 18 embryos implanted, out of 38 embryos transferred (47.3%), resulting in 13 newborns.
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Affiliation(s)
- Miguel Gallardo
- Clínica Ginemed, C/ Farmacéutico Murillo Herrera n 3-5, 41010, Seville, Spain.,Seville Engineering School, University of Seville, Camino de los Descubrimientos s/n, 41092, Seville, Spain
| | - María Hebles
- Clínica Ginemed, C/ Farmacéutico Murillo Herrera n 3-5, 41010, Seville, Spain
| | - Beatriz Migueles
- Clínica Ginemed, C/ Farmacéutico Murillo Herrera n 3-5, 41010, Seville, Spain
| | - Mónica Dorado
- Clínica Ginemed, C/ Farmacéutico Murillo Herrera n 3-5, 41010, Seville, Spain
| | - Laura Aguilera
- Clínica Ginemed, C/ Farmacéutico Murillo Herrera n 3-5, 41010, Seville, Spain
| | - Mercedes González
- Clínica Ginemed, C/ Farmacéutico Murillo Herrera n 3-5, 41010, Seville, Spain
| | - Paloma Piqueras
- Clínica Ginemed, C/ Farmacéutico Murillo Herrera n 3-5, 41010, Seville, Spain
| | - Alejandro Lucas
- Seville Engineering School, University of Seville, Camino de los Descubrimientos s/n, 41092, Seville, Spain
| | - Lorena Montero
- Clínica Ginemed, C/ Farmacéutico Murillo Herrera n 3-5, 41010, Seville, Spain
| | | | | | - Ramón Risco
- Seville Engineering School, University of Seville, Camino de los Descubrimientos s/n, 41092, Seville, Spain. .,National Accelerators Centre, Calle Thomas Alva Edison, 7, 41092, Seville, Spain.
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Reversible Cryopreservation of Living Cells Using an Electron Microscopy Cryo-Fixation Method. PLoS One 2016; 11:e0164270. [PMID: 27711254 PMCID: PMC5053471 DOI: 10.1371/journal.pone.0164270] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2016] [Accepted: 09/22/2016] [Indexed: 02/01/2023] Open
Abstract
Rapid cooling of aqueous solutions is a useful approach for two important biological applications: (I) cryopreservation of cells and tissues for long-term storage, and (II) cryofixation for ultrastructural investigations by electron and cryo-electron microscopy. Usually, both approaches are very different in methodology. Here we show that a novel, fast and easy to use cryofixation technique called self-pressurized rapid freezing (SPRF) is–after some adaptations–also a useful and versatile technique for cryopreservation. Sealed metal tubes with high thermal diffusivity containing the samples are plunged into liquid cryogen. Internal pressure builds up reducing ice crystal formation and therefore supporting reversible cryopreservation through vitrification of cells. After rapid rewarming of pressurized samples, viability rates of > 90% can be reached, comparable to best-performing of the established rapid cooling devices tested. In addition, the small SPRF tubes allow for space-saving sample storage and the sealed containers prevent contamination from or into the cryogen during freezing, storage, or thawing.
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Paschoal DM, Sudano MJ, Schwarz KRL, Maziero RRD, Guastali MD, Crocomo LF, Magalhães LCO, Martins A, Leal CLV, Landim-Alvarenga FDC. Cell apoptosis and lipid content of in vitro-produced, vitrified bovine embryos treated with forskolin. Theriogenology 2016; 87:108-114. [PMID: 27634395 DOI: 10.1016/j.theriogenology.2016.08.011] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2015] [Revised: 08/08/2016] [Accepted: 08/09/2016] [Indexed: 11/19/2022]
Abstract
The presence of fetal calf serum in culture medium influences embryo quality, causing a reduction in postcryopreservation survival. Forskolin has been used to induce lipolysis and increase cryotolerance, functioning as an activator of adenylate cyclase and elevating cAMP levels. In the present experiment, bovine zygotes were cultured in synthetic oviduct fluid with amino acid plus 2.5% fetal calf serum for 6 days, when forskolin was added in three concentrations: 2.5, 5, and 10 μM. Treatment with forskolin lasted for 24 hours. Blastocyst formation rate, quantification of lipid granules, total cell numbers, and apoptosis rate were evaluated. In a second assessment, embryos were vitrified, and warming, re-expansion rate, total cell numbers, and apoptosis rate were also evaluated. There was no difference due to forskolin in blastocyst formation or re-expansion rates after vitrification. However, lipid measurements were lower (control: 136.8 and F 2.5 μM: 128.5; P < 0.05), and number of cells per embryo higher (control: 140.1 and F 2.5 μM: 173.5; P < 0.05) than controls for 2.5 μM forskolin but not for higher forskolin concentrations. The number of intact cells per embryo was higher, and the rate of apoptosis was lower in fresh than in vitrified embryos (number of cells of warmed embryos, control: 104.1, F 2.5 μM: 101.3, F 5 μM: 115.4, F 10 μM: 95.1; apoptotic of fresh cells, control: 12.1%, F 2.5 μM: 16.7%, F 5 μM: 11.1%, F 10 μM: 14.2%; and apoptotic warmed embryos, control: 22.3%, F 2.5 μM: 37.3%, F 5 μM: 33.2%, F 10 μM: 30.3%; P < 0.05). It was concluded that forskolin is an effective lipolytic agent even at low concentrations, leading to formation of blastocysts with a comparatively larger number of cells.
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Affiliation(s)
- Daniela Martins Paschoal
- Departmento de Medicina Veterinária, Faculdade de Zootecnia e Engenharia de Alimentos, Universidade de São Paulo, Pirassununga, SP, Brazil.
| | - Mateus José Sudano
- Universidade Federal do Pampa, Faculdade de Medicina Veterinária, Uruguaiana, RS, Brazil
| | - Kátia Regina Lancellotti Schwarz
- Departmento de Medicina Veterinária, Faculdade de Zootecnia e Engenharia de Alimentos, Universidade de São Paulo, Pirassununga, SP, Brazil
| | - Rosiára Rosário Dias Maziero
- Departmento de Reprodução Animal, Faculdade de Medicina Veterinária e Zootecnia, Universidade do Estado de São Paulo, Botucatu, SP, Brazil
| | - Midyan Daroz Guastali
- Departmento de Reprodução Animal, Faculdade de Medicina Veterinária e Zootecnia, Universidade do Estado de São Paulo, Botucatu, SP, Brazil
| | - Letícia Ferrari Crocomo
- Departmento de Reprodução Animal, Faculdade de Medicina Veterinária e Zootecnia, Universidade do Estado de São Paulo, Botucatu, SP, Brazil
| | - Luis Carlos Oña Magalhães
- Departmento de Reprodução Animal, Faculdade de Medicina Veterinária e Zootecnia, Universidade do Estado de São Paulo, Botucatu, SP, Brazil
| | - Alício Martins
- Departmento de Clínica, Cirurgia e Reprodução Animal, Faculdade de Medicina Veterinária, Universidade do Estado de São Paulo, Araçatuba, SP, Brazil
| | - Claudia Lima Verde Leal
- Departmento de Medicina Veterinária, Faculdade de Zootecnia e Engenharia de Alimentos, Universidade de São Paulo, Pirassununga, SP, Brazil
| | - Fernanda da Cruz Landim-Alvarenga
- Departmento de Reprodução Animal, Faculdade de Medicina Veterinária e Zootecnia, Universidade do Estado de São Paulo, Botucatu, SP, Brazil
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State of actin cytoskeleton and development of slow-frozen and vitrified rabbit pronuclear zygotes. Cryobiology 2015; 72:14-20. [PMID: 26687386 DOI: 10.1016/j.cryobiol.2015.11.009] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2015] [Revised: 11/24/2015] [Accepted: 11/27/2015] [Indexed: 01/06/2023]
Abstract
This study was focused on the effect of cryopreservation on the state of actin cytoskeleton and development of rabbit pronuclear zygotes. Zygotes were collected from superovulated females and immediately used for 1) slow-freezing in a solution containing 1.5 M 1,2-propanediol and 0.2 M sucrose, or 2) vitrification in a solution containing 42.0% (v/v) of ethylene glycol, 18.0% (w/v) of dextran and 0.3 M sucrose as cryoprotectants. After thawing or warming, respectively, zygotes were evaluated for 1) actin distribution, 2) in vitro or 3) in vivo development to blastocyst. Comparing actin filaments distribution, a significantly higher number of vitrified zygotes with actin distributed in cell border was observed (55 ± 7.7 vs. 74 ± 6.1% for slow-frozen vs. vitrified, respectively). After 24 and 72 h of in vitro development, significant differences in the cleavage and morula rate among the groups were observed (9 ± 2.4 and 3 ± 1.3 vs. 44 ± 3.0 and 28 ± 2.7% for slow-frozen vs. vitrified, respectively). None of the slow-frozen zygotes reached the blastocyst stage, in contrast to the vitrified counterparts (11 ± 1.9%). Under in vivo culture conditions, a significant difference in blastocyst rate was observed between vitrified and fresh embryos (6 ± 1.5 vs. 35 ± 4.4% respectively). Our results showed that alterations in actin cytoskeleton and deteriorated development are more evident in slow-frozen than vitrified pronuclear zygotes. Vitrification method seems to be a more effective option for rabbit zygotes cryopreservation, although pronuclear zygotes manipulation per se resulted in a notable decrease in embryo development.
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Hydroxypropyl cellulose as an option for supplementation of cryoprotectant solutions for embryo vitrification in human assisted reproductive technologies. Reprod Biomed Online 2015; 30:613-21. [DOI: 10.1016/j.rbmo.2015.02.004] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2014] [Revised: 01/30/2015] [Accepted: 02/05/2015] [Indexed: 11/21/2022]
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Wong J, Kipp JE, Miller RL, Nair LM, Joseph Ray G. Mechanism of 2-hydropropyl-beta-cyclodextrin in the stabilization of frozen formulations. Eur J Pharm Sci 2014; 62:281-92. [DOI: 10.1016/j.ejps.2014.05.024] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2014] [Revised: 04/29/2014] [Accepted: 05/27/2014] [Indexed: 10/25/2022]
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Abstract
SummaryThe aim of this study was to evaluate the effect of the addition of Ficoll 70 into the cryopreservation medium containing sucrose and dimethyl sulfoxide (DMSO) on rabbit spermatozoa characteristics following freezing/thawing. This large molecular weight polymer elevates the viscosity of medium and, therefore, could better protect spermatozoa during the freezing process. Only ejaculates of good initial motility (>80%) were used in the experiments. Heterospermic pools were diluted in a freezing medium composed of commercial diluent, 16% dimethyl sulphoxide (DMSO) and 2% sucrose (control) or in the same medium enriched with 4% Ficoll 70 (Ficoll) and frozen in liquid nitrogen vapours for 10 min before being plunged in liquid nitrogen. The quality of fresh and frozen/thawed spermatozoa samples was evaluated in vitro using the Computer Assisted Semen Analysis (CASA) system, fluorescent probes (peanut agglutinin (PNA)-Alexa Fluor®; annexin V-FLOUS) and by electron microscopy. Better cryoprotective effect was observed when Ficoll 70 was added, compared with the semen cryopreserved with sucrose and DMSO only. The higher values (P < 0.05) of motile and progressively moving spermatozoa immediately after thawing and at 30 min following incubation at 37°C were obtained in the Ficoll group. Moreover, the higher number (P < 0.05) of acrosome intact sperm was found in the Ficoll compared with the control group. Furthermore, no significant differences in kindling rates and number of pups born between frozen/thawed and fresh semen group were found. In conclusion, our study showed that the addition of Ficoll 70 might improve several characteristics of rabbit spermatozoa measured in vitro following freezing/thawing.
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Sansinena M, Santos M, Taminelli G, Zaritky N. Implications of storage and handling conditions on glass transition and potential devitrification of oocytes and embryos. Theriogenology 2014; 82:373-8. [DOI: 10.1016/j.theriogenology.2014.04.003] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2013] [Revised: 04/07/2014] [Accepted: 04/08/2014] [Indexed: 11/15/2022]
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Efficient production of live offspring from mouse oocytes vitrified with a novel cryoprotective agent, carboxylated ε-poly-L-lysine. PLoS One 2013; 8:e83613. [PMID: 24376724 PMCID: PMC3871522 DOI: 10.1371/journal.pone.0083613] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2013] [Accepted: 11/05/2013] [Indexed: 12/02/2022] Open
Abstract
In cryopreservation of mammalian germ cells, unfertilized oocytes are one of the most available stages because these cryopreserved oocytes can be used for assisted reproductive technologies, including in vitro fertilization (IVF) and intracytoplasmic sperm injection. However, it has been generally reported that the fertility and developmental ability of the oocytes are reduced by cryopreservation. Therefore further improvement will be required. Very recently, a new cryoprotective agent (CPA), called as carboxylated ε-poly-L-lysine (COOH-PLL), has been developed to reduce physical and physiological damage by cryopreservation in mammalian stem cells. However, it is unclear the effect of COOH-PLL on fertility and developmental ability of vitrified oocytes. In this study, we used COOH-PLL as a CPA with ethylene glycol (EG) for vitrification of mouse oocytes. Cumulus-oocyte complexes (COCs) were collected from ICR mice and then vitrified with Cryotop using different concentration of COOH-PLL and EG. A combined treatment with COOH-PLL and EG showed high survival rate (more than 90%) of vitrified-warmed COCs after in vitro fertilization. In addition, the fertility and developmental ability of COCs vitrified with E20P10 [EG 20% (v/v) and COOH-PLL 10% (w/v)] or E15P15 group (EG 15% and COOH-PLL 15%) were significantly higher than those with E10P20 (EG10% and COOH-PLL 20%) or P30 group (PLL30%). The vitrified COCs in E20P10 group developed to term at a high success rate (46.2%) and it was significantly higher than that in control (E30) group (34.8%). Our present study demonstrated for the first time that COOH-PLL is effective for vitrification of mouse oocytes.
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Wang Y, Okitsu O, Zhao XM, Sun Y, Di W, Chian RC. The effect of minimal concentration of ethylene glycol (EG) combined with polyvinylpyrrolidone (PVP) on mouse oocyte survival and subsequent embryonic development following vitrification. J Assist Reprod Genet 2013; 31:55-63. [PMID: 24258349 DOI: 10.1007/s10815-013-0136-5] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2013] [Accepted: 10/29/2013] [Indexed: 11/24/2022] Open
Abstract
PURPOSE Vitrification techniques employ a relatively high concentration of cryoprotectant in vitrification solutions. Exposure of oocytes to high concentrations of cryoprotectant is known to damage the oocytes via both cytotoxic and osmotic effects. Therefore, the key to successful vitrification of oocytes is to strike a balance between the usage of minimal concentration of cryoprotectant without compromising their cryoprotective actions. METHODS The minimal concentration of ethylene glycol (EG) on mouse oocyte survival and subsequent embryonic development was evaluated following vitrification-warming and parthenogenetic activation. Polyvinylpyrrolidone (PVP) combined with EG on mouse oocyte survival and subsequent embryonic development as well as morphology of the spindle and chromosome alignment were also evaluated. Vitrification system was adapted with JY Straw and the cooling rate was approximately 442-500 °C/min. In contrast, the warming rate was approximately 2,210-2,652 °C/min. RESULTS Survival rate of oocytes increased significantly when 15 % EG was combined with 2 % PVP in vitrification solution (VS). The effect of combination of EG and PVP was not significant when the concentration of EG was 20 % and higher. Although there were no significant differences in embryonic development, the percentage of abnormal spindle and chromosome alignment was significantly higher in the oocytes without 2 % PVP in VS. CONCLUSIONS Our data provide a proof of principle for oocyte vitrification that may not require a high concentration of cryoprotectant. There are synergic effects of EG combined with PVP for oocyte vitrification, which may provide important information to the field in developing less cytotoxic VS.
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Affiliation(s)
- Yao Wang
- Center for Reproductive Medicine, Key Laboratory for Assisted Reproduction and Genetics, Department of Obstetrics and Gynecology, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
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Liang YY, Srirattana K, Phermthai T, Somfai T, Nagai T, Parnpai R. Effects of vitrification cryoprotectant treatment and cooling method on the viability and development of buffalo oocytes after intracytoplasmic sperm injection. Cryobiology 2012; 65:151-6. [DOI: 10.1016/j.cryobiol.2012.04.006] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2011] [Revised: 03/08/2012] [Accepted: 04/19/2012] [Indexed: 12/01/2022]
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Wang X, Magalhães R, Wu Y, Wen F, Gouk SS, Watson PF, Yu H, Kuleshova LL. Development of a modified vitrification strategy suitable for subsequent scale-up for hepatocyte preservation. Cryobiology 2012; 65:289-300. [PMID: 22940432 DOI: 10.1016/j.cryobiol.2012.07.080] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2010] [Revised: 07/11/2012] [Accepted: 07/11/2012] [Indexed: 12/22/2022]
Abstract
This work explores the design of a vitrification solution (VS) for scaled-up cryopreservation of hepatocytes, by adapting VS(basic) (40% (v/v) ethylene glycol 0.6M sucrose, i.e. 7.17 M ethylene glycol 0.6M sucrose), previously proven effective in vitrifying bioengineered constructs and stem cells. The initial section of the scale-up study involved the selection of non-penetrating additives to supplement VS(basic) and increase the solution's total solute concentration. This involved a systematic approach with a step-by-step elimination of non-penetrating cryoprotectants, based on their effect on cells after long/short term exposures to high/low concentrations of the additives alone or in combinations, on the attachment ability of hepatocytes after exposure. At a second stage, hepatocyte suspension was vitrified and functions were assessed after continuous culture up to 5 days. Results indicated Ficoll as the least toxic additive. Within 60 min, the exposure of hepatocytes to a solution composed of 9% Ficoll+0.6M sucrose (10⁻³ M Ficoll+0.6 M sucrose) sustained attachment efficiency of 95%, similar to control. Furthermore, this additive did not cause any detriment to the attachment of these cells when supplementing the base vitrification solution VS(basic). The addition of 9% Ficoll, raised the total solute concentration to 74.06% (w/v) with a negligible 10⁻³ M increase in molarity of the solution. This suggests main factor in inducing detriment to cells was the molar contribution of the additive. Vitrification protocol for scale-up condition sustained hepatocyte suspension attachment efficiency and albumin production. We conclude that although established approach will permit scaling-up of vitrification of hepatocyte suspension, vitrification of hepatocytes which are attached prior to vitrification is more effective by comparison.
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Affiliation(s)
- Xianwei Wang
- Low Temperature Preservation Unit, National University Medical Institutes, Yong Loo Lin School of Medicine, National University of Singapore, Singapore
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Chen C, Han S, Liu W, Wang Y, Huang G. Effect of vitrification on mitochondrial membrane potential in human metaphase II oocytes. J Assist Reprod Genet 2012; 29:1045-50. [PMID: 22915342 DOI: 10.1007/s10815-012-9848-1] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2012] [Accepted: 08/08/2012] [Indexed: 10/28/2022] Open
Abstract
OBJECTIVE The aim of this study was to evaluate the impact of vitrification on mitochondrial membrane potential (ΔΨm) in human metaphase II (MII) oocytes, and the changes of ΔΨm on thawed MII oocytes. METHODS MII oocytes were obtained from clinical IVF cycles when the oocytes were failed to fertilization within 24 h after insemination. All oocytes were randomly divided into 4 groups: non-frozen (fresh group), cultured for 0 h (0 h group), 2 h (2 h group) and 4 h (4 h group) after vitrification/thawing. All oocytes were stained with the ΔΨm-specific probe JC-1 and detected by laser scanning confocal microscope (LSCM) for mitochondrial analysis. RESULTS The ΔΨm of oocytes was significantly decreased in 0 h and 2 h groups when compared with fresh group (0.93, 1.09 vs 1.34, P < 0.05), but similar between 4 h group and fresh group (1.30 vs 1.34, P > 0.05). CONCLUSION In the vitrification/thawing process, the ΔΨm of MII oocytes could have temporally dynamic changes within 2 h after thawing but would be fully recovered after 4 h culture.
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Affiliation(s)
- Cui Chen
- Chongqing Medical University, 1 Yi Xue Yuan ST, Yu Zhong Dis, Chongqing 400016, China
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Developmental competence of ovine oocyte following vitrification: effect of oocyte developmental stage, cumulus cells, cytoskeleton stabiliser, FBS concentration, and equilibration time. ZYGOTE 2012; 22:165-73. [DOI: 10.1017/s096719941200038x] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
SummaryThe aim of the present study was to examine the effects of fetal bovine serum (FBS) concentration, equilibration time, and oocyte pre-treatment with cytochalasin B (CCB) on subsequent development of vitrified-warmed ovine immature (GVCOCs) and matured (MII) oocytes with (MIICOCs) or without cumulus cells (MIIDOs). In Experiment 1, the effects of FBS concentrations (10 and 20%) during the vitrification-warming procedure were examined. Survival rates after warming were not different between GVCOCs, MIICOCs and MIIDOs oocytes. After in vitro fertilization, rate of cleaved embryos in MIICOCs group at the presence of 20%FBS was higher than MIIDOs and GVCOCs groups. In Experiment 2, the effects of equilibration times (5, 7, and 10 min) were examined. There was no difference in survival rate of vitrified-warmed oocytes equilibrated at different times. Although, the rate of cleavage in MIICOCs and MIIDOs oocytes equilibrated for 10 and 7 min, respectively, was higher than 5 min equilibrated MIIDOs and 7 and 10 min equilibrated GVCOCs oocytes. In Experiment 3, the effects of oocyte pre-treatment with CCB were examined. Despite the insignificant difference in survival rate of vitrified-warmed ovine immature and matured oocytes, the rates of cleavage in CCB pretreated groups were significantly lower than untreated groups. Moreover, the blastocysts were only derived from those cumulus enclosed vitrified-warmed germinal vesicle (GV) and MII oocytes that had been exposed to 10% FBS in the absence of CCB. In conclusion, the presence of cumulus cells, 10% FBS, and the omission of CCB were beneficial for post-warming development of vitrified ovine oocytes.
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Forskolin effect on the cryosurvival of in vitro-produced bovine embryos in the presence or absence of fetal calf serum. ZYGOTE 2012; 22:146-57. [DOI: 10.1017/s0967199412000354] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
SummaryThe objective of this study was to assess the viability and cryotolerance of zebu embryos produced in vitro with or without the addition of fetal calf serum (FCS) and forskolin (F). Embryos produced in vivo were used as a control. Presumptive zygotes were cultured in modified synthetic oviductal fluid supplemented with amino acids (SOFaa), bovine serum albumin (BSA) and with (2.5%) or without (0%) FCS. On day 6 of growth, the embryos from each group were divided into treatments with or without 10 μM F to induce embryonic lipolysis, comprising a total of four experimental groups: 2.5% FCS, 0% FCS, 2.5% + F and 0% + F. For vitrification, embryos were exposed to vitrification solution 1 (5 M EG (ethylene glycol)) for 3 min and then transferred to vitrification solution 2 (7 M EG, 0.5 M galactose solution and 18% (w/v) Ficoll 70) before being introduced to liquid nitrogen. The presence of FCS in the culture medium resulted in the production of embryos with a similar rate of damaged cells compared with in vivo-produced embryos. After vitrification, the 2.5% FCS group had a significantly higher rate of damaged cells when compared with the other groups (P < 0.05). The results of this experiment indicated that the omission of FCS and the addition of forskolin do not have deleterious effect on embryo production rates. In addition, embryos produced in the presence of FCS had greater sensitivity to cryopreservation, but this effect was reversed when forskolin was added to the medium, which improved embryo survival without affecting embryo development and quality after vitrification.
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Synthetic polymers improve vitrification outcomes of macaque ovarian tissue as assessed by histological integrity and the in vitro development of secondary follicles. Cryobiology 2012; 65:1-11. [PMID: 22569078 DOI: 10.1016/j.cryobiol.2012.04.005] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2012] [Revised: 04/03/2012] [Accepted: 04/12/2012] [Indexed: 11/20/2022]
Abstract
Ovarian tissue cryopreservation is the only proven option for fertility preservation in female cancer patients who are prepubertal or require immediate treatment. However it remains unclear which cryopreservation protocol is best in cases where the tissue may contain cancerous cells, as these should be matured in vitro rather than autografted. This study evaluated different cryoprotectant exposure times and whether the addition of synthetic polymers (Supercool X-1000, Z-1000 and polyvinylpyrrolidone [PVP K-12]) to the vitrification solution is beneficial to tissue morphology, cellular proliferation and subsequent in vitro function of secondary follicles. Pieces of macaque (n=4) ovarian cortex were exposed to vitrification solution containing glycerol (25%, v/v) and ethylene glycol (25%, v/v) for 3 or 8 min, without (V3, V8) or with (VP3, VP8) polymers (0.2% [v/v] X-1000, 0.4% Z-1000 and 0.2% PVP). Fresh and vitrified tissues were fixed for histology and phosphohistone H3 (PPH3) analysis, or used for secondary follicle isolation followed by encapsulated 3D culture. Five-week follicle survival and growth, as well as steroid hormones (estradiol [E(2)], progesterone, androstenedione) were measured weekly. Morphology of the stroma and preantral follicles as well as PPH3 expression, was preserved in all vitrified tissues. Vitrification with polymers and shorter incubation time (VP3) increased in vitro follicle survival and E(2) production compared to other vitrified groups. Thus, a short exposure of macaque ovarian tissue to a vitrification solution containing synthetic polymers preserves morphology and improves in vitro function of secondary follicles.
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Isachenko E, Rahimi G, Mallmann P, Sanchez R, Isachenko V. Novel Approaches to the Cryopreservation of Human Spermatozoa: History and Development of the Spermatozoa Vitrification Technology. ACTA ACUST UNITED AC 2011. [DOI: 10.1177/205891581100200207] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Cryobiology is very intensively applied in reproductive and veterinary medicine for preservation of gametes, embryos and reproductive tissues. Sub-zero temperatures combined with appropriate cryoprotective agents preserve the physiological and reproductive functions of the cells making long-term storage possible without loss of viability. With the use of cryoprotective agents it has become possible to develop cryopreservation techniques, such as the slow conventional freezing and vitrification that are in use in the present times. In slow controlled-rate conventional freezing extracellular ice crystals are formed whereas in vitrification no ice crystals are formed. Glass formation is compatible with the survival of the cell and the preservation of its intracellular structures provided the type(s) and concentrations of cryoprotectant used are not chemo- or osmotoxic. However, irrespective of the type of cooling method employed the cryosurvival of cells and tissues is influenced by the size and maturity of cells, amounts of intracellular water, quality and quantity of intracellular lipids, type of cells, their function and morphology. The intracellular milieu of cryopreserved cells and tissues remain less understood. The application of nanotechnology may help reveal and help advance our knowledge of the cryobiological principles involved in cryosurvival. At this moment the methods of cryopreservation that merit further investigation are vitrification and lyophilization. Vitrification is cheap if reagents are prepared in-house and the procedure can be performed rapidly. It has been successfully applied for gametes and embryos (of different stages of development), and reproductive cells/tissues, somatic cells and stem cells. However, vitrification is more demanding technically and requires operation and storage at sub-zero temperatures. On the other hand lyophilization deserves further investigation because it is a cheaper form of cryopreservation that may enable cryostorage at less demanding temperatures of 4°C and may even allow transport at ambient temperature. These possibilities are explored in this review.
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Affiliation(s)
- Evgenia Isachenko
- Department of Gynaecological Endocrinology and Reproductive Medicine, University of Cologne, Kerpener Str. 50931 Cologne, Germany
| | - Gohar Rahimi
- Department of Gynaecological Endocrinology and Reproductive Medicine, University of Cologne, Kerpener Str. 50931 Cologne, Germany
| | - Peter Mallmann
- Department of Gynaecological Endocrinology and Reproductive Medicine, University of Cologne, Kerpener Str. 50931 Cologne, Germany
| | - Raul Sanchez
- Department of Preclinical Sciences, Faculty of Medicine, Universidad de La Frontera, Temuco, Chile
| | - Vladimir Isachenko
- Department of Gynaecological Endocrinology and Reproductive Medicine, University of Cologne, Kerpener Str. 50931 Cologne, Germany
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Jo JW, Jee BC, Lee JR, Suh CS. Effect of antifreeze protein supplementation in vitrification medium on mouse oocyte developmental competence. Fertil Steril 2011; 96:1239-45. [PMID: 21917250 DOI: 10.1016/j.fertnstert.2011.08.023] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2011] [Revised: 08/11/2011] [Accepted: 08/16/2011] [Indexed: 11/26/2022]
Abstract
OBJECTIVE To investigate the effect of antifreeze protein (AFP) supplementation during mouse oocyte vitrification on the survival, fertilization and embryonic development. DESIGN Animal study. SETTING University laboratory. ANIMAL(S) BDF-1 mice. INTERVENTION(S) In vivo-matured metaphase II oocytes were vitrified with the use of CryoTop by two-step exposure to equilibrium and vitrification solution supplemented or not with 500 ng/mL AFP III. MAIN OUTCOME MEASURE(S) Postwarming survival, fertilization, embryonic development up to blastocyst in vitro, morphology of spindle and chromosome, membrane integrity, adenosine triphosphate (ATP) contents, and several gene expressions. RESULT(S) In the AFP-treated group, blastocyst formation rate was significantly higher and blastomere count with positive caspase was significantly lower compared with the nontreated group. Rate of intact spindle/chromosome, stable membrane, and ATP contents were significantly higher in AFP group. AFP group showed higher Mad2 and lower Eg5 gene expression. Both vitrification groups showed increased Hsf1, Zar1, and Zp1/Zp2 expression and decreased Hook1 and Zp3 expression compared with fresh control samples. CONCLUSION(S) Supplementation of AFP in vitrification medium has a protective effect on mouse oocytes for chilling injury; it can preserve spindle/membrane integrity and intracellular ATP contents. More stable spindle integrity in the AFP group may be associated with higher Mad2 and lower Eg5 gene expression.
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Affiliation(s)
- Jun Woo Jo
- Department of Obstetrics and Gynecology, Seoul National University Bundang Hospital, Seongnam, Gyeonggi, South Korea
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Umemura E, Yamada Y, Nakamura S, Ito K, Hara K, Ueda M. Viable Cryopreserving Tissue-Engineered Cell-Biomaterial for Cell Banking Therapy in an Effective Cryoprotectant. Tissue Eng Part C Methods 2011; 17:799-807. [DOI: 10.1089/ten.tec.2011.0003] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023] Open
Affiliation(s)
- Eri Umemura
- Department of Oral and Maxillofacial Surgery, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Yoichi Yamada
- Department of Oral and Maxillofacial Surgery, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Sayaka Nakamura
- Department of Oral and Maxillofacial Surgery, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Kenji Ito
- Hamamatsu Kita Hospital, Shizuoka, Japan
| | - Kenji Hara
- Hamamatsu Kita Hospital, Shizuoka, Japan
| | - Minoru Ueda
- Department of Oral and Maxillofacial Surgery, Nagoya University Graduate School of Medicine, Nagoya, Japan
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Amorim CA, Curaba M, Van Langendonckt A, Dolmans MM, Donnez J. Vitrification as an alternative means of cryopreserving ovarian tissue. Reprod Biomed Online 2011; 23:160-86. [DOI: 10.1016/j.rbmo.2011.04.005] [Citation(s) in RCA: 115] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2010] [Revised: 03/10/2011] [Accepted: 04/14/2011] [Indexed: 10/18/2022]
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Lawson A, Ahmad H, Sambanis A. Cytotoxicity effects of cryoprotectants as single-component and cocktail vitrification solutions. Cryobiology 2011; 62:115-22. [PMID: 21262212 PMCID: PMC3049861 DOI: 10.1016/j.cryobiol.2011.01.012] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2010] [Revised: 11/05/2010] [Accepted: 01/18/2011] [Indexed: 10/18/2022]
Abstract
Cryoprotectant (CPA) cytotoxicity constitutes a challenge in developing cryopreservation protocols, specifically in vitrification where high CPA concentrations are necessary to achieve the ice-free, vitreous state. Few cytotoxicity studies have investigated vitrification-relevant concentrations of CPAs, and the benefits and disadvantages of cocktail solutions and of incorporating non-permeating solutes have not been fully evaluated. In this study, we address these issues by determining the cytotoxicity kinetics for dimethylsulfoxide (Me(2)SO) and 1,2-propanediol (PD) on alginate-encapsulated βTC-tet mouse insulinomas for a range of concentrations and temperatures. Cytotoxicity kinetics were also determined for two cocktails, DPS (3M Me(2)SO+3M PD+0.5M sucrose) and PEG400 (1M Me(2)SO+5M PD+0.34M poly(ethylene)glycol with M.W. of 400). PD was found to be more cytotoxic than Me(2)SO at higher concentrations and temperatures. This was reflected in PEG400 being more cytotoxic at room temperature than PEG400 at 4°C or DPS at either temperature. Addition of non-permeating solutes increased the cytotoxicity of cocktails. Furthermore, results indicate that CPA cytotoxicity may not be additive and that combining CPAs may increase cytotoxicity synergistically. Finally, when comparing cytotoxic effects towards encapsulated HepG2 and βTC-tet cells, and towards βTC-tet cells in capsules and in monolayers, CPAs appear more cytotoxic towards cells with higher metabolic activity. The incorporation of these results in the rational design of CPA addition/removal processes in vitrification is discussed.
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Affiliation(s)
- Alison Lawson
- School of Chemical and Biomolecular Engineering, Georgia Institute of Technology, Atlanta, GA, USA
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Chang CC, Nel-Themaat L, Nagy ZP. Cryopreservation of oocytes in experimental models. Reprod Biomed Online 2011; 23:307-13. [PMID: 21550306 DOI: 10.1016/j.rbmo.2011.01.007] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2010] [Revised: 12/16/2010] [Accepted: 01/13/2011] [Indexed: 11/28/2022]
Abstract
Until recently, success in oocyte cryopreservation has been very limited mainly due to poor understanding of the complex physiological processes that lead to cell damage during cryopreservation. In the past three decades, however, a wealth of information has been collected using various different animal models, which has led to development of new technologies and optimization of existing ones. The use of these models has provided the opportunity for research that may not have been possible with human material. Today, results of these studies still continue to form the basis of oocyte cryobiology. This review discusses these studies, especially the physiological impacts of cryopreservation on oocyte biology. It will also focus on the role that animal models have played in improvement strategies, validation before translating new techniques into the human model and the advances made in the human in IVF because of these animal models. Finally, existing investigations and their potential impact in other areas of research will be discussed. Until recently, success in oocyte cryopreservation has been very limited mainly due to poor understanding of the complex physiological processes that lead to cell damage during cryopreservation. In the past three decades, however, a wealth of information has been collected using various different animal models, which has led to development of new technologies and optimization of existing ones. The use of these models provided the opportunity for research that may not have been possible with human material. Today, animal models still continuously provide imperative data that facilitate further advancements in oocyte cryobiology. This review will focus on the physiological impacts, current improvement strategies and future applications of oocyte cryopreservation using animal models as they benefit not only human oocyte cryopreservation procedures, but also the human species through their usefulness in agriculture, medicine and conservation.
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Abstract
The development of simple but effective storage protocols for adult stem cells will greatly enhance their use and utility in tissue-engineering applications. There are three primary storage techniques, freezing (cryopreservation), drying (anhydrobiosis), and freeze drying (lyophilization), each with its own advantages and disadvantages. Cryopreservation has shown the most promise but is a fairly complex process, necessitating the use of chemicals called cryoprotective agents (CPAs), freezing equipment, and obviously, storage in liquid nitrogen. Preservation by desiccation is an alternative that attempts to reproduce a naturally occurring preservative technique, namely, the phenomenon of anhydrobiosis and requires the use of high (and possibly, toxic) concentration of CPAs as well as disaccharides (sugars). Lyophilization works by first cryopreserving (freezing) the material and then desiccating (drying) it by the process of sublimation or the conversion of ice (solid) to water vapor (gas phase). The purpose of this chapter is to present a general overview of these storage techniques and the optimal protocols/results obtained in our laboratory for long-term storage of adult stem cells using freezing storage and drying storage.
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KOHAYA N, FUJIWARA K, ITO J, KASHIWAZAKI N. High Developmental Rates of Mouse Oocytes Cryopreserved by an Optimized Vitrification Protocol: The Effects of Cryoprotectants, Calcium and Cumulus Cells. J Reprod Dev 2011; 57:675-80. [DOI: 10.1262/jrd.11-066h] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Affiliation(s)
- Natsuki KOHAYA
- Laboratory of Animal Reproduction, School of Veterinary Medicine, Azabu University, Sagamihara 252-5201, Japan
| | - Katsuyoshi FUJIWARA
- Graduate School of Veterinary Science, Azabu University, Sagamihara 252-5201, Japan
| | - Junya ITO
- Laboratory of Animal Reproduction, School of Veterinary Medicine, Azabu University, Sagamihara 252-5201, Japan
- Graduate School of Veterinary Science, Azabu University, Sagamihara 252-5201, Japan
| | - Naomi KASHIWAZAKI
- Laboratory of Animal Reproduction, School of Veterinary Medicine, Azabu University, Sagamihara 252-5201, Japan
- Graduate School of Veterinary Science, Azabu University, Sagamihara 252-5201, Japan
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Abd-Allah SM. Cryopreservation of Intact and Biopsied Buffalo Blastocysts. ASIAN JOURNAL OF ANIMAL AND VETERINARY ADVANCES 2010; 6:29-35. [DOI: 10.3923/ajava.2011.29.35] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/01/2023]
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Dextran vitrification media prevents mucin coat and zona pellucida damage in rabbit embryo. Theriogenology 2010; 74:1623-8. [DOI: 10.1016/j.theriogenology.2010.06.034] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2010] [Revised: 06/23/2010] [Accepted: 06/23/2010] [Indexed: 11/20/2022]
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Xiaohong Wang, Paloheimo KS, Huirong Xu, Chang Liu. Cryopreservation of Cell/Hydrogel Constructs Based on a New Cell-assembling Technique. J BIOACT COMPAT POL 2010. [DOI: 10.1177/0883911510382571] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Organ manufacturing is a promising method to replace failing complex organs. In this study, a new cell cryopreservation technique was developed with cryoprotectants being directly incorporated into the cell/hydrogel construct according to predesigned structures and then subjected to a special freezing/thaw process. The hydration of the gelatin/alginate hydrogel was greatly increased while the eutectic temperature was decreased by the adding glycerol. The addition of dextran-40 was found to also effectively improve the cell survival when incorporated with glycerol. The most favorable cryoprotectant concentration was 2.5% glycerol with 5% dextran-40 in a gelatin/alginate hydrogel. Under these conditions, the cell viability in the construct was >95%. Microscopic observations, MTT analysis, hematoxylin and eosin staining indicated that the cells proliferated immediately after thawing. The cells in the gelatin/alginate hydrogel with both glycerol and dextran-40 had proliferated more than with only glycerol or dextran-40 alone. This approach can be adapted for use in cell assembly in high-throughput drug screening and complex organ manufacturing areas.
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Affiliation(s)
- Xiaohong Wang
- BIT Research Centre, Aalto University School of Science and Technology, P.O. Box 15500, 00076 Aalto, Finland, Key Laboratory for Advanced Materials Processing Technology, Ministry of Education & Center of Organ Manufacturing, Department of Mechanical Engineering, Tsinghua University, Beijing 100084, P.R. China,
| | - Kaija-Stiina Paloheimo
- BIT Research Centre, Aalto University School of Science and Technology, P.O. Box 15500, 00076 Aalto, Finland
| | - Huirong Xu
- Key Laboratory for Advanced Materials Processing Technology, Ministry of Education & Center of Organ Manufacturing, Department of Mechanical Engineering, Tsinghua University, Beijing 100084, P.R. China
| | - Chang Liu
- Department of Chemical Engineering and Technology, South China University of Technology, Guangzhou 510640, P.R. China
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FUJIWARA K, SANO D, SEITA Y, INOMATA T, ITO J, KASHIWAZAKI N. Ethylene Glycol-supplemented Calcium-free Media Improve Zona Penetration of Vitrified Rat Oocytes by Sperm Cells. J Reprod Dev 2010; 56:169-75. [DOI: 10.1262/jrd.09-107h] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Affiliation(s)
- Katsuyoshi FUJIWARA
- Laboratory of Animal Reproduction, Graduate School of Veterinary Science, Azabu University
| | - Daisuke SANO
- Laboratory of Animal Reproduction, Graduate School of Veterinary Science, Azabu University
| | - Yasunari SEITA
- Laboratory of Animal Reproduction, Graduate School of Veterinary Science, Azabu University
- Department of Obstetrics, Gynecology and Reproductive Science, Human Embryonic Stem Cell Core Facility, UMDNJ-Robert Wood Johnson Medical School
| | - Tomo INOMATA
- Laboratory of Experimental Animal Science, Graduate School of Veterinary Science, Azabu University
- School of Veterinary Medicine, Azabu University
| | - Junya ITO
- Laboratory of Animal Reproduction, Graduate School of Veterinary Science, Azabu University
- School of Veterinary Medicine, Azabu University
| | - Naomi KASHIWAZAKI
- Laboratory of Animal Reproduction, Graduate School of Veterinary Science, Azabu University
- School of Veterinary Medicine, Azabu University
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The use of vitrification to preserve primary rat hepatocyte monolayer on collagen-coated poly(ethylene-terephthalate) surfaces for a hybrid liver support system. Biomaterials 2009; 30:4136-42. [DOI: 10.1016/j.biomaterials.2009.04.037] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2009] [Accepted: 04/23/2009] [Indexed: 12/30/2022]
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A critical evaluation of ovarian tissue cryopreservation and grafting as a strategy for preserving the human female germline. ACTA ACUST UNITED AC 2009. [DOI: 10.1017/s0962279900001502] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Ovarian tissue freezing has been used successfully in animals and it has recently begun to be offered clinically to young women who have medical conditions with a high risk of sterility. Although no frozen human ovarian grafts have yet been returned to the donor and resulted in a pregnancy, there are many indications that this procedure should be feasible. Although live young have been derived from frozen grafts in several species, research should aim to make further improvements to the cryopreservation and grafting procedures to optimize follicle survival, and hence minimize the amount of tissue that needs to be collected, stored and returned. Ovarian tissue freezing, particular if used in combination with egg and embryo freezing, should allow a patient to safeguard their chance of becoming a parent later (Table 1). In cases where the patient has a systemic cancer or infection and malignant cells or viruses may be present in the systemic circulation and the gonadal tissue, ovarian tissue could be collected and frozen, but grafting is not currently recommended (Table 3).
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Abstract
Successful cryopreservation of porcine gametes and embryos has been very challenging due to their sensitivity to cryoinjuries. Although considerable improvements have been achieved in the vitrification of porcine embryos, there has been no offspring born from the vitrified oocytes in this species. Porcine oocytes characteristically contain large amounts of cytoplasmic lipids that are major obstacles limiting efficient cryopreservation. These droplets together with structures such as mitochondria, membranes, cortical granules and basic components of the spindle and cytoskeleton (microtubules and microfilaments) often incur serious damage during cooling and warming. According to recent reports, the proper combinations of permeable and non-permeable cryoprotectants and vitrification with high cooling and warming rates may increase the survival of porcine oocytes. The cryotolerance of porcine oocytes may also be enhanced by removal of the chilling-sensitive lipid droplets, supplementation of cytoskeleton relaxants in vitrification solutions, or high hydrostatic pressure pretreatment of oocytes before cryopreservation. The improvement in cryopreservation methodology for porcine oocytes will no doubt augment other technologies such as pig cloning and the establishment of a gene bank for transgenic pigs.
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Affiliation(s)
- Guang-Bin Zhou
- State Key Laboratory for Agrobiotechnology, China Agricultural University, Haidian District, Beijing 100193, People's Republic of China
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