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Olexiková L, Makarevich A, Dujíčková L, Kubovičová E, Chrenek P. Factors affecting cryotolerance of mammalian oocytes. Cryobiology 2024; 116:104946. [PMID: 39069220 DOI: 10.1016/j.cryobiol.2024.104946] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2024] [Revised: 06/25/2024] [Accepted: 07/25/2024] [Indexed: 07/30/2024]
Abstract
Cryopreservation of oocytes is an important tool for preserving genetic resources and for farm animals breeding. Processes taking place during vitrification affect oocytes and result in their reduced developmental capacity and lower fertilisation rates of cryopreserved oocytes. Further improvement in cryopreservation techniques is still required. Several authors already summarized the actual state and perspectives of oocyte cryopreservation as well as potential approaches to improve their development after thawing. The aim of this review is to specify factors affecting cryotolerance of mammalian oocytes, especially bovine in vitro matured oocytes, and to identify the areas, where more efforts were made to improve the success of oocyte cryopreservation. These factors include oocyte lipid content, membrane composition, mRNA protection, cytoskeleton stabilization and application of such potential stimulators of cell cryotolerance as antioxidants, growth factors or antifreeze proteins.
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Affiliation(s)
- Lucia Olexiková
- National Agricultural and Food Centre (NPPC), Research Institute for Animal Production Nitra, Hlohovecka 2, 95141, Lužianky, Slovak Republic.
| | - Alexander Makarevich
- National Agricultural and Food Centre (NPPC), Research Institute for Animal Production Nitra, Hlohovecka 2, 95141, Lužianky, Slovak Republic
| | - Linda Dujíčková
- National Agricultural and Food Centre (NPPC), Research Institute for Animal Production Nitra, Hlohovecka 2, 95141, Lužianky, Slovak Republic
| | - Elena Kubovičová
- National Agricultural and Food Centre (NPPC), Research Institute for Animal Production Nitra, Hlohovecka 2, 95141, Lužianky, Slovak Republic
| | - Peter Chrenek
- National Agricultural and Food Centre (NPPC), Research Institute for Animal Production Nitra, Hlohovecka 2, 95141, Lužianky, Slovak Republic; Institute of Biotechnology, Faculty of Biotechnology and Food Science, Slovak University of Agriculture in Nitra, Tr. A. Hlinku 2, 94976, Nitra, Slovak Republic
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2
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Colombo M, Alkali IM, Luvoni GC. Microenvironment factors promoting the quality of vitrified cat oocytes. Theriogenology 2023; 196:275-283. [PMID: 36442286 DOI: 10.1016/j.theriogenology.2022.11.027] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2022] [Revised: 11/17/2022] [Accepted: 11/19/2022] [Indexed: 11/23/2022]
Abstract
In oocyte cryopreservation programs, vitrification has overthrown conventional slow freezing both in veterinary and human medicine. In animals, its feasibility in field conditions makes it the preferred technique for the safeguard of genetic resources from zoo or wild animals, including threatened felids, for which the domestic cat is an excellent model. However, many cellular injuries, such as cytoskeleton, mitochondria and meiotic spindle alterations, DNA damage, zona pellucida hardening and cumulus cell loss, might occur following vitrification. After warming, although the exact mechanisms are still unclear, degeneration is a frequent outcome for cat vitrified oocytes. For immature (germinal vesicle) gametes, in vitro maturation after warming is a challenge, and cleavage after fertilization barely reaches 15-30%, while for mature (metaphase II) cryopreserved gametes it can get to 30-50%. Anyway, the progression to late embryos stages is often impaired, and improvements are needed. Standard cryopreservation protocol and the use of conventional in vitro culture systems after warming may not be enough for vitrified oocytes to recover and demonstrate their full developmental potential. Physical or chemical factors applied to oocytes undergoing vitrification, as an enrichment to the vitrification step, or to the culture microenvironment, could create more favorable conditions and promote vitrified oocyte survival and development. From the use of three-dimensional culture systems to the regulation of metabolic activities and cellular pathways, this review aims to explore all the possibilities employed so far, including the studies performed by our own lab, and the future perspectives, to present the most effective strategies for cat oocyte vitrification and the best time for their application (i.e., before, during, or after vitrification-warming).
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Affiliation(s)
- Martina Colombo
- Dipartimento di Medicina Veterinaria e Scienze Animali (DIVAS), Università degli Studi di Milano, 26900, Lodi, Italy.
| | - Isa Mohammed Alkali
- Dipartimento di Medicina Veterinaria e Scienze Animali (DIVAS), Università degli Studi di Milano, 26900, Lodi, Italy.
| | - Gaia Cecilia Luvoni
- Dipartimento di Medicina Veterinaria e Scienze Animali (DIVAS), Università degli Studi di Milano, 26900, Lodi, Italy.
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3
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Fu X, Liu X, Li J, Zhang M, Jiang J, Chen Q, Li M, Gao S, Ma J. An Eight Year Experience of Autologous Oocyte Vitrification for Infertile Patients Owing to Unavailability of Sperm on Oocyte Retrieval Day. Front Med (Lausanne) 2021; 8:663287. [PMID: 34765611 PMCID: PMC8575774 DOI: 10.3389/fmed.2021.663287] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2021] [Accepted: 08/23/2021] [Indexed: 11/13/2022] Open
Abstract
Objective: The objective of this study was to provide a descriptive analysis of the clinical outcomes achieved in oocyte vitrification in cases where sperm was unavailable on oocyte retrieval day, and to identify predictors of oocyte survival. Methods: This retrospective cohort study used data from a university-affiliated reproductive medical center. There were 321 cycles in which some of, or all oocytes were vitrified owing to the unavailability of sperm between March 2009 and October 2017. A descriptive analysis of the clinical outcomes including both fresh embryo transfers and cryopreserved embryo transfers was provided. The ability of an individual parameter to forecast oocyte survival per thawing cycle was assessed by binary logistic regression analysis. The cumulative probability of live birth (CPLB) was estimated by using the Kaplan-Meier method according to the total number of oocytes thawed in consecutive procedures. Results: The average survival rate was 83.13%. High-quality embryo rate and blastocyst rate decreased significantly decreased significantly in vitrification oocyte group compared to fresh control oocytes. The comparison of sibling oocytes in part-oocyte-vitrified cycles shows fewer high-quality embryos developed in the vitrified group. The live birth rate per warmed-oocyte was 4.3%. Reasons for lack of sperm availability on oocyte retrieval day and serum cholesterol levels were found to be associated with oocyte survival rate in the present study. Kaplan-Meier analysis showed no significant difference in CPLB between patients ≤35 vs. >35 years. Conclusions: Oocyte vitrification is an indispensable and effective alternative when sperm are not available on oocyte retrieval day. The present study provided evidence that oocytes from infertile couples were more likely to suffer oocyte/embryo vitrification injury. Clinicians need to take this into account when advising patients in similar situations. Further studies will be necessary to clarify the correlation between serum metabolism parameters and human oocyte survival after vitrification.
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Affiliation(s)
- Xiao Fu
- Cheeloo College of Medicine, Shandong University, Jinan, China.,Center for Reproductive Medicine, Shandong University, Jinan, China.,National Research Centre for Assisted Reproductive Technology and Reproductive Genetics, Shandong University, Jinan, China
| | - Xiaojie Liu
- Cheeloo College of Medicine, Shandong University, Jinan, China.,Center for Reproductive Medicine, Shandong University, Jinan, China.,National Research Centre for Assisted Reproductive Technology and Reproductive Genetics, Shandong University, Jinan, China
| | - Jing Li
- Cheeloo College of Medicine, Shandong University, Jinan, China.,Center for Reproductive Medicine, Shandong University, Jinan, China.,National Research Centre for Assisted Reproductive Technology and Reproductive Genetics, Shandong University, Jinan, China
| | - Meng Zhang
- Cheeloo College of Medicine, Shandong University, Jinan, China.,Center for Reproductive Medicine, Shandong University, Jinan, China.,National Research Centre for Assisted Reproductive Technology and Reproductive Genetics, Shandong University, Jinan, China
| | - Jingjing Jiang
- Center for Reproductive Medicine, Shandong University, Jinan, China.,National Research Centre for Assisted Reproductive Technology and Reproductive Genetics, Shandong University, Jinan, China
| | - Qianqian Chen
- Center for Reproductive Medicine, Shandong University, Jinan, China.,National Research Centre for Assisted Reproductive Technology and Reproductive Genetics, Shandong University, Jinan, China
| | - Mei Li
- Center for Reproductive Medicine, Shandong University, Jinan, China.,National Research Centre for Assisted Reproductive Technology and Reproductive Genetics, Shandong University, Jinan, China
| | - Shanshan Gao
- Cheeloo College of Medicine, Shandong University, Jinan, China.,Center for Reproductive Medicine, Shandong University, Jinan, China.,National Research Centre for Assisted Reproductive Technology and Reproductive Genetics, Shandong University, Jinan, China
| | - Jinlong Ma
- Center for Reproductive Medicine, Shandong University, Jinan, China.,National Research Centre for Assisted Reproductive Technology and Reproductive Genetics, Shandong University, Jinan, China
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4
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Okotrub KA, Okotrub SV, Mokrousova VI, Amstislavsky SY, Surovtsev NV. Lipid phase transitions in cat oocytes supplemented with deuterated fatty acids. Biophys J 2021; 120:5619-5630. [PMID: 34767788 DOI: 10.1016/j.bpj.2021.11.008] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2021] [Revised: 10/18/2021] [Accepted: 11/03/2021] [Indexed: 01/15/2023] Open
Abstract
Cryopreservation of oocytes has already been used to preserve genetic resources, but this technology faces limitations when applied to the species whose oocytes contain large amounts of cytoplasmic lipid droplets. Although cryoinjuries in such oocytes are usually associated with the lipid phase transition in lipid droplets, this phenomenon is still poorly understood. We applied Raman spectroscopy of deuterium-labeled lipids to investigate the freezing of lipid droplets inside cat oocytes. Lipid phase separation was detected in oocytes cryopreserved by slow-freezing protocol. For oocytes supplemented with stearic acid, we found that saturated lipids form the ordered phase being distributed at the periphery of lipid droplets. When an oocyte is warmed to physiological temperatures after cooling, a fraction of saturated lipids may remain in the ordered conformational state. The fractions of monounsaturated and polyunsaturated lipids redistribute to the core of lipid droplets. Monounsaturated lipids undergo the transition to the ordered conformational state below -10°C. Using deuterated fatty acids with a different number of double bonds, we reveal how different lipid fractions are involved in the lipid phase transition of a cytoplasmic lipid droplet and how they can affect cell survival. Raman spectroscopy of deuterated lipids has proven to be a promising tool for studying the lipid phase transitions and lipid redistributions inside single organelles within living cells.
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Affiliation(s)
- Konstantin A Okotrub
- Institute of Automation and Electrometry, the Siberian Branch of the Russian Academy of Sciences, Novosibirsk, Russia.
| | - Svetlana V Okotrub
- Institute of Automation and Electrometry, the Siberian Branch of the Russian Academy of Sciences, Novosibirsk, Russia; Institute of Cytology and Genetics, the Siberian Branch of the Russian Academy of Sciences, Novosibirsk, Russia
| | - Valentina I Mokrousova
- Institute of Automation and Electrometry, the Siberian Branch of the Russian Academy of Sciences, Novosibirsk, Russia; Institute of Cytology and Genetics, the Siberian Branch of the Russian Academy of Sciences, Novosibirsk, Russia
| | - Sergei Y Amstislavsky
- Institute of Cytology and Genetics, the Siberian Branch of the Russian Academy of Sciences, Novosibirsk, Russia
| | - Nikolay V Surovtsev
- Institute of Automation and Electrometry, the Siberian Branch of the Russian Academy of Sciences, Novosibirsk, Russia
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5
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Vitrification of immature bovine oocytes in protein-free media: The impact of the cryoprotectant treatment protocol, base medium, and ovary storage. Theriogenology 2021; 172:47-54. [PMID: 34098168 DOI: 10.1016/j.theriogenology.2021.05.029] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2021] [Revised: 05/25/2021] [Accepted: 05/25/2021] [Indexed: 11/23/2022]
Abstract
Protein-free media are essential for the sanitary cryopreservation of bovine genetic resources. Our aim was to set up an optimized protocol for the vitrification of immature bovine oocytes using protein free media which can provide the highest embryo development rates and embryo quality after subsequent in vitro maturation and fertilization. First, using a protein free NCSU-37 as base medium we compared the efficacy of vitrification on Cryotop device with two different CPA protocols. "Protocol A″ employed a combination of ethylene glycol and propylene glycol as permeating cryoprotectants (pCPA) and equilibration in 4% total pCPA (2% ethylene glycol + 2% propylene glycol). "Protocol B″ employed a combination of ethylene glycol and DMSO and equilibration in 15% total pCPA (7.5% ethylene glycol + 7.5% DMSO). The 2 protocols were equally effective in terms of oocyte survival and subsequent development to the blastocyst stage. However, blastocyst cell numbers were significantly higher with "Protocol A". TCM-199 and NCSU-37 were equally effective as base media for vitrification. Vitrification with "Protocol A″ reduced the percentage of live oocytes and subsequent development to blastocyst stage but did not affect the hatching and cell numbers of blastocysts when compared to the non-treated group. CPA treatment of "Protocol A″ without cooling did not affect embryo development. Storage of ovaries in PBS at 15 °C for overnight reduced the percentage of surviving oocytes after vitrification but not their subsequent development to the blastocyst stage. In conclusion we established a vitrification protocol for the cryopreservation of immature bovine oocytes employing protein-free media which provided high blastocyst quality without noticeable toxic effects.
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6
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Teplá O, Topurko Z, Mašata J, Jirsová S, Frolíková M, Komrsková K, Minks A, Turánek J, Lynnyk A, Kratochvílová I. Important parameters affecting quality of vitrified donor oocytes. Cryobiology 2021; 100:110-116. [PMID: 33684403 DOI: 10.1016/j.cryobiol.2021.03.001] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2020] [Revised: 02/27/2021] [Accepted: 03/01/2021] [Indexed: 12/12/2022]
Abstract
For group of 281 oocytes obtained from 43 stimulated donors and cryopreserved by vitrification protocol using Cryotop and Kitazato medium we determined important parameters of oocytes collection and vitrification processes which strongly affect the probability that warmed oocytes will produce high-quality embryos for transfer. The probability to obtain high-quality embryos for transfer from vitrified and warmed oocytes was highest when two conditions were fulfilled: 1. oocytes were incubated before vitrification for 7-10 h and 2. stimulated ovaries of donors in one cycle produced a smaller number of oocytes (<7 oocytes from one donor per stimulated cycle). The probable reasons for these observations were: 1. early vitrification (less than 7 h) before final oocyte metaphase II maturation negatively affected the crucial process of post-warm remodelling of spindles and chromosomes, which reduced the fertilization and utilization rates, 2. the evaluated vitrification protocol amplifies negative impact of membrane defects of oocytes of those cohorts containing more than 6 oocytes - freezing places great demands on the integrity and elasticity of the cell membranes. The fact that cryopreservation influences a complex state of oocytes was confirmed by confocal microscopy.
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Affiliation(s)
- Olga Teplá
- Department of Obstetrics and Gynecology of the First Faculty of Medicine and General Teaching Hospital, Apolinářská 18, 128 51, Prague 2, Czech Republic.
| | - Zinovij Topurko
- Department of Obstetrics and Gynecology of the First Faculty of Medicine and General Teaching Hospital, Apolinářská 18, 128 51, Prague 2, Czech Republic.
| | - Jaromír Mašata
- Department of Obstetrics and Gynecology of the First Faculty of Medicine and General Teaching Hospital, Apolinářská 18, 128 51, Prague 2, Czech Republic.
| | - Simona Jirsová
- Department of Obstetrics and Gynecology of the First Faculty of Medicine and General Teaching Hospital, Apolinářská 18, 128 51, Prague 2, Czech Republic.
| | - Michaela Frolíková
- Laboratory of Reproductive Biology, Institute of Biotechnology of the Czech Academy of Sciences, BIOCEV, Průmyslová 595, 252 50, Vestec, Czech Republic.
| | - Kateřina Komrsková
- Laboratory of Reproductive Biology, Institute of Biotechnology of the Czech Academy of Sciences, BIOCEV, Průmyslová 595, 252 50, Vestec, Czech Republic; Department of Zoology, Faculty of Science, Charles University, Vinicna 7, 128 44, Prague 2, Czech Republic.
| | - Adela Minks
- ISCARE a.s, Českomoravská 2510/19, 190 00, Praha, Czech Republic.
| | - Jaroslav Turánek
- Department of Immunology and Institute of Molecular and Translational Medicine, Faculty of Medicine and Dentistry, Palacky University Olomouc, 77515, Olomouc, Czech Republic.
| | - Anna Lynnyk
- Institute of Physics of the Czech Academy of Sciences, Na Slovance 2, CZ-182 21, Prague 8, Czech Republic.
| | - Irena Kratochvílová
- Institute of Physics of the Czech Academy of Sciences, Na Slovance 2, CZ-182 21, Prague 8, Czech Republic.
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7
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Hao T, Zhang P, Hao H, Du W, Pang Y, Zhao S, Zou H, Zhu H, Yu W, Li S, Zhao X. The combination treatment of cholesterol-loaded methyl-β-cyclodextrin and methyl-β-cyclodextrin significantly improves the fertilization capacity of vitrified bovine oocytes by protecting fertilization protein JUNO. Reprod Domest Anim 2021; 56:519-530. [PMID: 33405303 DOI: 10.1111/rda.13890] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2020] [Revised: 12/22/2020] [Accepted: 01/03/2021] [Indexed: 12/25/2022]
Abstract
Many experiments show that vitrification significantly reduces the fertilization capacity of mammalian oocytes, restricting the application of vitrified oocytes. It has been proven that the JUNO protein plays a vital role in mammalian oocytes fertilization. However, little information is available about the effects of vitrification on the JUNO protein and the procedure to protect it in bovine oocytes. Here, the present study was designed to investigate the effect of vitrification on the JUNO protein level in bovine oocytes. In this study, MII oocytes were treated with cholesterol-loaded methyl-β-cyclodextrin (CLC; 0, 10, 15, 20 mM) for 45 min before vitrification and methyl-β-cyclodextrin (MβCD; 0, 2.25, 4.25, 6.25 mM) for 45 min after thawing (38-39°C). Then, the expression level and function of JUNO protein, cholesterol level in the membrane, the externalization of phosphatidylserine, sperm binding capacity and the developmental ability of vitrified bovine oocytes were examined. Our results showed that vitrification significantly decreased the JUNO protein level, cholesterol level, sperm binding capacity, development ability, and increased the promoter methylation level of the JUNO gene and apoptosis level of bovine oocytes. Furthermore, 15 mM CLC + 4.25 mM MβCD treatment significantly improved the cholesterol level and increased sperm binding and development ability of vitrified bovine oocytes. In conclusion, the combination treatment of cholesterol-loaded methyl-β-cyclodextrin and methyl-β-cyclodextrin significantly improves the fertilization capacity of vitrified bovine oocytes by protecting fertilization protein JUNO.
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Affiliation(s)
- Tong Hao
- Embryo Biotechnology and Reproduction Laboratory, Institute of Animal Sciences (IAS), Chinese Academy of Agricultural Sciences (CAAS), Beijing, China
| | - Peipei Zhang
- Embryo Biotechnology and Reproduction Laboratory, Institute of Animal Sciences (IAS), Chinese Academy of Agricultural Sciences (CAAS), Beijing, China
| | - Haisheng Hao
- Embryo Biotechnology and Reproduction Laboratory, Institute of Animal Sciences (IAS), Chinese Academy of Agricultural Sciences (CAAS), Beijing, China
| | - Weihua Du
- Embryo Biotechnology and Reproduction Laboratory, Institute of Animal Sciences (IAS), Chinese Academy of Agricultural Sciences (CAAS), Beijing, China
| | - Yunwei Pang
- Embryo Biotechnology and Reproduction Laboratory, Institute of Animal Sciences (IAS), Chinese Academy of Agricultural Sciences (CAAS), Beijing, China
| | - Shanjiang Zhao
- Embryo Biotechnology and Reproduction Laboratory, Institute of Animal Sciences (IAS), Chinese Academy of Agricultural Sciences (CAAS), Beijing, China
| | - Huiying Zou
- Embryo Biotechnology and Reproduction Laboratory, Institute of Animal Sciences (IAS), Chinese Academy of Agricultural Sciences (CAAS), Beijing, China
| | - Huabin Zhu
- Embryo Biotechnology and Reproduction Laboratory, Institute of Animal Sciences (IAS), Chinese Academy of Agricultural Sciences (CAAS), Beijing, China
| | - Weili Yu
- Shijiazhuang Tianquan Elite Dairy Lt.D., Shijiazhuang, China.,Hebei Provincial Dairy Cow Breeding Engineering Technology Research Center, Shijiazhuang, China.,Hebei Cattle Industry Technology Research Institute, Shijiazhuang, China
| | - Shujing Li
- Shijiazhuang Tianquan Elite Dairy Lt.D., Shijiazhuang, China.,Hebei Provincial Dairy Cow Breeding Engineering Technology Research Center, Shijiazhuang, China.,Hebei Cattle Industry Technology Research Institute, Shijiazhuang, China
| | - Xueming Zhao
- Embryo Biotechnology and Reproduction Laboratory, Institute of Animal Sciences (IAS), Chinese Academy of Agricultural Sciences (CAAS), Beijing, China
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8
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Lipidomic changes in mouse oocytes vitrified in PEG 8000-supplemented vitrification solutions. Cryobiology 2020; 99:140-148. [PMID: 33242477 DOI: 10.1016/j.cryobiol.2020.11.004] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2020] [Revised: 11/06/2020] [Accepted: 11/09/2020] [Indexed: 01/24/2023]
Abstract
Cryopreserved oocytes are inevitably exposed to cold stress, which negatively affects the cellular aspects of the oocytes. Lipidomic analysis of the oocytes reveals quantitative changes in lipid classes under conditions of cold stress, leading to potential freezing-vulnerability. We had previously shown that specific phospholipids are significantly downregulated in vitrified-warmed mouse oocytes compared to those in fresh oocytes. In this study, we examined whether supplementation of polyethylene glycol 8000 (PEG 8000) during vitrification influences the lipidome of the oocytes. We used liquid chromatography with tandem mass spectrometry (LC-MS/MS) to study the alteration in the lipidome in three groups of mouse oocytes: fresh, vitrified-warmed, and vitrified with PEG 8000-warmed during vitrification. In these groups, we targeted to analyze 21 lipid classes. We profiled 132 lipid species in the oocytes and statistical analyses revealed lipid classes that were up- or downregulated in these groups. Overall, our data revealed that several classes of lipids were affected during vitrification, and that oocytes vitrified with PEG 8000 to some extent alleviated the levels of changes in phospholipid and sphingolipid contents during vitrification. These results suggest that phospholipids and sphingolipids are influenced by PEG 8000 during vitrification and that PEG 8000 can be considered as a potential candidate for preserving membrane integrity during oocyte cryopreservation.
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9
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Arcarons N, Vendrell-Flotats M, Yeste M, Mercade E, López-Béjar M, Mogas T. Cryoprotectant role of exopolysaccharide of Pseudomonas sp. ID1 in the vitrification of IVM cow oocytes. Reprod Fertil Dev 2020; 31:1507-1519. [PMID: 31092307 DOI: 10.1071/rd18447] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2018] [Accepted: 04/02/2019] [Indexed: 12/12/2022] Open
Abstract
Biological molecules isolated from organisms that live under subzero conditions could be used to protect oocytes from cryoinjuries suffered during cryopreservation. This study examined the cryoprotectant role of exopolysaccharides of Pseudomonas sp. ID1 (EPS ID1) in the vitrification of prepubertal and adult cow oocytes. IVM oocytes were vitrified and warmed in media supplemented with 0, 1, 10, 100 or 1000µgmL-1 EPS ID1. After warming, oocytes were fertilised and embryo development, spindle morphology and the expression of several genes in Day 8 blastocysts were assessed. Vitrification led to significantly lower proportion of prepubertal oocytes exhibiting a normal spindle configuration. In fresh control oocytes and most groups of vitrified adult oocytes, similar percentages of oocytes with a normal spindle configuration were observed. Percentages of Day 8 blastocysts were similar for prepubertal oocytes vitrified in the absence or presence of 1 or 10µgmL-1 EPS ID1 and for adult oocytes vitrified in the presence of 10µgmL-1 EPS ID1 compared with non-vitrified oocytes. EPS ID1 supplementation had no effect on solute carrier family 2 member 3 (SLC2A3), ubiquitin-conjugating enzyme E2A (UBE2A) and histone deacetylase 1 (HDAC1) expression in Day 8 blastocysts form adult oocytes. However, supplementation with 10 and 100µgmL-1 EPS ID1 led to increased expression of genes involved in epigenetic modifications (DNA methyltransferase 3 alpha (DNMT3A) and K (lysine) acetyltransferase 2A (KAT2A)) and apoptosis (BCL2 associated X apoptosis regulator (BAX) and BCL2-like 1 (BCL2L1)). The lowest BAX:BCL2L1 ratio was found in the 10µgmL-1 EPS ID1-supplemented group. The results suggest that 10µgmL-1 EPS ID1 added to vitrification and warming media may help protect bovine oocytes against cryodamage.
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Affiliation(s)
- Núria Arcarons
- Department of Animal Medicine and Surgery, Autonomous University of Barcelona, Travessera dels Turons s/n, E-08193, Cerdanyola del Vallès (Barcelona), Spain
| | - Meritxell Vendrell-Flotats
- Department of Animal Medicine and Surgery, Autonomous University of Barcelona, Travessera dels Turons s/n, E-08193, Cerdanyola del Vallès (Barcelona), Spain; and Department of Animal Health and Anatomy, Autonomous University of Barcelona, Travessera dels Turons s/n, E-08193, Cerdanyola del Vallès (Barcelona), Spain
| | - Marc Yeste
- Department of Biology, Institute of Food and Agricultural Technology, University of Girona, Girona, C/ Maria Aurèlia Campany 69, Campus Montilivi, E-17003 Girona, Spain
| | - Elena Mercade
- Department de Biology, Health and Environment, Microbiology Section, University of Barcelona, E-08028, Barcelona, Spain
| | - Manel López-Béjar
- Department of Animal Health and Anatomy, Autonomous University of Barcelona, Travessera dels Turons s/n, E-08193, Cerdanyola del Vallès (Barcelona), Spain
| | - Teresa Mogas
- Department of Animal Medicine and Surgery, Autonomous University of Barcelona, Travessera dels Turons s/n, E-08193, Cerdanyola del Vallès (Barcelona), Spain; and Corresponding author.
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10
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Dubeibe Marin DF, Nogueira da Costa N, di Paula Bessa Santana P, Baia de Souza E, Rolim Filho ST, da Silva Cordeiro M, Ohashi OM. Influence of l-carnitine on lipid metabolism of buffalo cumulus-oocyte complexes matured in either fetal bovine serum or fatty acid-free bovine serum albumin. Theriogenology 2020; 158:382-390. [PMID: 33038824 DOI: 10.1016/j.theriogenology.2020.09.030] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2020] [Revised: 09/25/2020] [Accepted: 09/25/2020] [Indexed: 12/23/2022]
Abstract
Consequences of oocyte supplementation with l-carnitine may vary depending on species-specific cellular lipid profile, level of mitochondrial activity, or even on ipid availability in culture medium. This study aimed to evaluate l-carnitine supplementation on competence and gene expression of enzymes related to lipid metabolism in oocytes and cumulus cells from buffalo COCs matured in the presence or absence of fetal bovine serum (FBS). COCs were matured in vitro in FBS (10%) or bovine serum albumin fatty acid-free (BSA-FAF) (0.4%) and with or without supplementation with l-carnitine (3.03 mM). COCs matured in the presence of FBS or BSA-FAF were fertilized and cultured, then supplemented with l-carnitine during in vitro maturation or in vitro embryo culture. Finally, in vivo mature and immature COCs were included for gene expression analysis. COCs matured in culture medium with FBS in the presence of l-carnitine produced a lower blastocyst rate (p ≤ 0.05) compared to controls. In turn, the blastocyst rate from COCs matured with BSA-FAF in the presence of l-carnitine was similar to controls (p > 0.05), and higher than FBS + L-carnitine treated COCs (p ≤ 0.05). Addition of l-carnitine during embryo culture showed no differences in blastocyst production between experimental groups and controls (p > 0.05). In cumulus cells, gene expression of ACACA, SCD and FASN was upregulated in COCs matured in the presence of BSA-FAF + L-carnitine, while all genes in oocytes were significantly expressed upregulated by COCs matured in vivo, and only BSA-FAF + L-carnitine group showed similar expression of the FASN gene. In conclusion, the consequences of l-carnitine supplementation during in vitro maturation of buffalo COCs on oocyte competence vary depending on presence or absence of FBS in culture. With FBS, l-carnitine impairs oocyte competence, while in its absence, gene expression suggests adequate lipid metabolism and increased oocyte competence.
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Affiliation(s)
- Diego Fernando Dubeibe Marin
- Biological Sciences Institute, Laboratory of Animal Reproduction, Federal University of Pará (Universidade Federal do Pará-UFPA), Belém, Pará, 66075-110, Brazil.
| | - Nathalia Nogueira da Costa
- Biological Sciences Institute, Laboratory of Animal Reproduction, Federal University of Pará (Universidade Federal do Pará-UFPA), Belém, Pará, 66075-110, Brazil
| | | | - Eduardo Baia de Souza
- Biological Sciences Institute, Laboratory of Animal Reproduction, Federal University of Pará (Universidade Federal do Pará-UFPA), Belém, Pará, 66075-110, Brazil
| | - Sebastião Tavares Rolim Filho
- Federal Rural University from Amazonia (Universidade Federal Rural da Amazônia-UFRA), Belém, Pará, 66077-830, Brazil
| | - Marcela da Silva Cordeiro
- Federal Institute of Education, Science and Technology from Pará - (Instituto Federal de Educação, Ciência e Tecnologia do Pará - IFPA), Ananindeua, Pará, 67140-709, Brazil
| | - Otavio Mitio Ohashi
- Biological Sciences Institute, Laboratory of Animal Reproduction, Federal University of Pará (Universidade Federal do Pará-UFPA), Belém, Pará, 66075-110, Brazil
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Alfoteisy B, Singh J, Anzar M. Natural honey acts as a nonpermeating cryoprotectant for promoting bovine oocyte vitrification. PLoS One 2020; 15:e0238573. [PMID: 32877463 PMCID: PMC7467261 DOI: 10.1371/journal.pone.0238573] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2019] [Accepted: 08/19/2020] [Indexed: 11/18/2022] Open
Abstract
Sugars are commonly supplemented into vitrification solution to dehydrate cells in order to reduce the formation of fatal intracellular ice crystals. Natural honey is a mixture of 25 sugars (mainly fructose and glucose) that have different biological and pharmacological benefits. The present study was designed to determine if honey can be used as a nonpermeating cryoprotectant in vitrification of bovine oocytes. In the first experiment, denuded-MII oocytes were exposed to 0.25, 0.5, 1.0, 1.5 or 2.0 M of honey or sucrose. Natural honey and sucrose caused similar ooplasm dehydration. A significant relationship existed between time and ooplasm volume change (P < 0.05), during dehydration and rehydration phases, in both honey and sucrose solutions. In the second experiment, the immature cumulus-oocyte complexes (COCs) were vitrified in an EG/DMSO-based vitrification solution containing honey (0.5, 1 or 1.5 M) or sucrose (0.5 M) as a gold standard. The vitrified-warmed COCs were matured in vitro and evaluated for nuclear maturation. The maturation (MII) rate was greater in nonvitrified control (81%) than vitrified groups (54%, P < 0.05). In the third experiment, COCs were either remained nonvitrified (control) or vitrified in 1.0 M honey or 0.5 M sucrose, followed by IVM, IVF and IVC (for 9 days). Cleavage rate was greater in control (74%) than in vitrified groups (47%, P < 0.05), without significant difference between sugars. Blastocyst rate was 34, 13 and 3% in control, honey and sucrose groups respectively (P < 0.05). In conclusion, natural honey acted as a nonpermeating cryoprotectant in vitrification solution and improved the embryonic development in vitrified bovine COCs.
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Affiliation(s)
- Bilal Alfoteisy
- Department of Veterinary Biomedical Sciences, Western College of Veterinary Medicine, University of Saskatchewan, Saskatoon, SK, Canada
| | - Jaswant Singh
- Agriculture and Agri-Food Canada, Saskatoon Research and Development Center, Canadian Animal Genetic Resource Program, Saskatoon, SK, Canada
| | - Muhammad Anzar
- Department of Veterinary Biomedical Sciences, Western College of Veterinary Medicine, University of Saskatchewan, Saskatoon, SK, Canada
- Agriculture and Agri-Food Canada, Saskatoon Research and Development Center, Canadian Animal Genetic Resource Program, Saskatoon, SK, Canada
- * E-mail: ,
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Effect of vitrification of in vitro matured prepubertal goat oocytes on embryo development after parthenogenic activation and intracytoplasmic sperm injection. Cryobiology 2020; 93:56-61. [DOI: 10.1016/j.cryobiol.2020.02.011] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2019] [Revised: 02/21/2020] [Accepted: 02/24/2020] [Indexed: 12/14/2022]
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Dubeibe Marin DF, da Costa NN, di Paula Bessa Santana P, de Souza EB, Ohashi OM. Importance of lipid metabolism on oocyte maturation and early embryo development: Can we apply what we know to buffalo? Anim Reprod Sci 2019; 211:106220. [PMID: 31785645 DOI: 10.1016/j.anireprosci.2019.106220] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2019] [Revised: 10/08/2019] [Accepted: 10/23/2019] [Indexed: 12/19/2022]
Abstract
The knowledge about the biological events that regulate lipid metabolism in oocytes and embryos in buffalo is scarce. Lipogenesis, lipolysis, transport and oxidation of fatty acids (FAs) occur in gametes and embryonic cells of all mammalian species, as an intrinsic component of energy metabolism. In oocytes and cumulus cells, degradation of lipids is responsible for the production of ATP that is essential for the metabolic processes that lead to oocyte maturation in in vivo and in vitro culture conditions. Similarly, throughout embryo development, blastomeres have the capacity to use exogenous and/or endogenous lipid reserves to serve as an energy source necessary for early embryonic development. In addition, supplementation of culture media with L-carnitine to promote lipid metabolism during in vitro oocyte maturation and early embryonic development leads to an improved embryo quality. The limited scientific evidence available in buffalo indicates there is relatively greater oocyte lipid content as compared with many other species that undergoes a dynamic distribution during folliculogenesis and follicle maturation and that has a positive effect on oocyte maturation and embryo development when there is L-carnitine supplementation of the media. Advances in the understanding of the biological peculiarities of lipid metabolism, and the consequences of its alteration on the quality of buffalo gametes and embryos, therefore, are necessary to design specific culture media and laboratory procedures as a strategy to increase in vitro-derived embryo production rates.
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Affiliation(s)
- Diego Fernando Dubeibe Marin
- Biological Sciences Institute, Laboratory of Animal Reproduction, Federal University of Pará, (Universidade Federal do Pará-UFPA), Belém, Pará, 66075-110, Brazil.
| | - Nathalia Nogueira da Costa
- Biological Sciences Institute, Laboratory of Animal Reproduction, Federal University of Pará, (Universidade Federal do Pará-UFPA), Belém, Pará, 66075-110, Brazil
| | | | - Eduardo Baia de Souza
- Biological Sciences Institute, Laboratory of Animal Reproduction, Federal University of Pará, (Universidade Federal do Pará-UFPA), Belém, Pará, 66075-110, Brazil
| | - Otavio Mitio Ohashi
- Biological Sciences Institute, Laboratory of Animal Reproduction, Federal University of Pará, (Universidade Federal do Pará-UFPA), Belém, Pará, 66075-110, Brazil
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Domingos Borges E, Aparecida Vireque A. Updating the Impact of Lipid Metabolism Modulation and Lipidomic Profiling on Oocyte Cryopreservation. EUROPEAN MEDICAL JOURNAL 2019. [DOI: 10.33590/emj/10310074] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023] Open
Abstract
Oocyte cryopreservation has drastically improved in recent years and is receiving widespread clinical use with increasing demand for fertility preservation and assisted reproduction treatments. However, there are still several points to be reviewed in terms of suppressing sub-lethal damages and improving overall safety, especially when trying to preserve oocytes at the germinal vesicle stage or oocytes matured in vitro. The lipid content of oocytes is highly associated with both their competence and cryotolerance. Differences in lipid content are observed not just between different species but also at different developmental stages and when the oocytes are kept under different conditions, including cryopreservation. Many efforts have been made to understand how physiological or in vitro alterations in the lipid profile of oocytes impacts cryotolerance and vice-versa; however, the dynamics of cytosolic and membrane lipid involvement in the cryopreservation process remains poorly clarified in the human female gamete. This review presents an updated overview of the current state of cryopreservation techniques and oocyte lipidomics and highlights possible ways to improve cryotolerance, focussing on lipid content modulation.
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Affiliation(s)
- Eduardo Domingos Borges
- Department of Obstetrics and Gynecology, Faculty of Medicine of Ribeirão Preto, University of São Paulo, Ribeirão Preto, Brazil
| | - Alessandra Aparecida Vireque
- Invitra – Assisted Reproductive Technologies Ltd., Supera Innovation and Technology Park, Ribeirão Preto, Brazil
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Mogas T. Update on the vitrification of bovine oocytes and invitro-produced embryos. Reprod Fertil Dev 2019; 31:105-117. [PMID: 32188546 DOI: 10.1071/rd18345] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
The combined use of reproductive technologies, such as transvaginal ovum-pick up and invitro embryo production followed by direct transfer of cryopreserved embryos, has great potential for enhancing genetic selection and optimising cross-breeding schemes in beef and dairy cattle production systems. This, along with an effective cryopreservation procedure for cow oocytes, will enable the long-term conservation of female genetic traits and the advance of embryo biotechnology in this species. However, the low fertilisation rates and developmental competence of cryopreserved oocytes still need to be improved. Over the past two decades, many research efforts tried to overcome individual features of the bovine oocyte that make it notoriously difficult to cryopreserve. In addition, pregnancy rates associated with invitro-produced (IVP) embryos remain lower than those obtained using invivo counterparts. This, together with a lack of a standard methodology for IVP embryo cryopreservation that provides easier and more practical logistics for the transfer of IVP embryos on farms, has hindered international genetic trade and the management of embryo banks. This review updates developments in oocyte and IVP embryo vitrification strategies targeting high production efficiency and better outcomes.
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Affiliation(s)
- Teresa Mogas
- Departament de Medicina i Cirurgia Animals, Universitat Autònoma de Barcelona, 08193 Cerdanyola del Vallès, Barcelona, Spain. Email
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