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Yurchuk T, Likszo P, Witek K, Petrushko M, Skarzynski DJ. New Approach to the Cryopreservation of GV Oocytes and Cumulus Cells through the Lens of Preserving the Intercellular Gap Junctions Based on the Bovine Model. Int J Mol Sci 2024; 25:6074. [PMID: 38892259 PMCID: PMC11172894 DOI: 10.3390/ijms25116074] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2024] [Revised: 05/19/2024] [Accepted: 05/26/2024] [Indexed: 06/21/2024] Open
Abstract
Differences in structural and functional properties between oocytes and cumulus cells (CCs) may cause low vitrification efficiency for cumulus-oocyte complexes (COCs). We have suggested that the disconnection of CCs and oocytes in order to further cryopreservation in various ways will positively affect the viability after thawing, while further co-culture in vitro will contribute to the restoration of lost intercellular gap junctions. This study aimed to determine the optimal method of cryopreservation of the suspension of CCs to mature GV oocytes in vitro and to determine the level of mRNA expression of the genes (GJA1, GJA4; BCL2, BAX) and gene-specific epigenetic marks (DNMT3A) after cryopreservation and in vitro maturation (IVM) in various culture systems. We have shown that the slow freezing of CCs in microstraws preserved the largest number of viable cells with intact DNA compared with the methods of vitrification and slow freezing in microdroplets. Cryopreservation caused the upregulation of the genes Cx37 and Cx43 in the oocytes to restore gap junctions between cells. In conclusion, the presence of CCs in the co-culture system during IVM of oocytes played an important role in the regulation of the expression of the intercellular proteins Cx37 and Cx43, apoptotic changes, and oocyte methylation. Slow freezing in microstraws was considered to be an optimal method for cryopreservation of CCs.
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Affiliation(s)
- Taisiia Yurchuk
- Department of Reproductive Immunology and Pathology, Institute of Animal Reproduction and Food Research of Polish Academy of Sciences in Olsztyn, 10-748 Olsztyn, Poland; (P.L.)
- Department of Cryobiology of Reproductive System, Institute for Problems of Cryobiology and Cryomedicine of the National Academy of Sciences of Ukraine, 61-016 Kharkiv, Ukraine
| | - Pawel Likszo
- Department of Reproductive Immunology and Pathology, Institute of Animal Reproduction and Food Research of Polish Academy of Sciences in Olsztyn, 10-748 Olsztyn, Poland; (P.L.)
| | - Krzysztof Witek
- Department of Reproductive Immunology and Pathology, Institute of Animal Reproduction and Food Research of Polish Academy of Sciences in Olsztyn, 10-748 Olsztyn, Poland; (P.L.)
| | - Maryna Petrushko
- Department of Cryobiology of Reproductive System, Institute for Problems of Cryobiology and Cryomedicine of the National Academy of Sciences of Ukraine, 61-016 Kharkiv, Ukraine
| | - Dariusz J. Skarzynski
- Department of Reproductive Immunology and Pathology, Institute of Animal Reproduction and Food Research of Polish Academy of Sciences in Olsztyn, 10-748 Olsztyn, Poland; (P.L.)
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Jia B, Xiang D, Yang H, Liang J, Lv C, Yang Q, Huang X, Quan G, Wu G. Transcriptome analysis of porcine embryos derived from oocytes vitrified at the germinal vesicle stage. Theriogenology 2024; 218:99-110. [PMID: 38316086 DOI: 10.1016/j.theriogenology.2024.01.032] [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: 10/03/2023] [Revised: 01/24/2024] [Accepted: 01/24/2024] [Indexed: 02/07/2024]
Abstract
Vitrification of porcine immature oocytes at the germinal vesicle (GV) stage reduces subsequent embryo yield and changes at the molecular level may occur during embryonic development. Therefore, the present study used porcine parthenogenetic embryos as a model to investigate the effect of GV oocyte vitrification on the transcriptional profiles of the resultant embryos at the 4-cell and blastocyst stages using the Smart-seq2 RNA-seq technique. We identified 743 (420 up-regulated and 323 down-regulated) and 994 (554 up-regulated and 440 down-regulated) differentially expressed genes (DEGs) from 4-cell embryos and blastocysts derived from vitrified GV oocytes, respectively. Functional enrichment analysis of DEGs in 4-cell embryos showed that vitrification of GV oocytes influenced regulatory mechanisms related to transcription regulation, apoptotic process, metabolism and key pathways such as the MAPK signaling pathway. Moreover, DEGs in blastocysts produced from vitrified GV oocytes were enriched in critical biological functions including cell adhesion, cell migration, AMPK signaling pathway, GnRH signaling pathway and so on. In addition, the transcriptomic analysis and quantitative real-time PCR results were consistent. In summary, the present study revealed that the vitrification of porcine GV oocytes could alter gene expression patterns during subsequent embryonic developmental stages, potentially affecting their developmental competence.
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Affiliation(s)
- Baoyu Jia
- Key Laboratory for Porcine Gene Editing and Xenotransplantation in Yunnan Province, College of Veterinary Medicine, Yunnan Agricultural University, Kunming, Yunnan, 650201, China
| | - Decai Xiang
- National Regional Genebank (Yunnan) of Livestock and Poultry Genetic Resources, Yunnan Provincial Engineering Laboratory of Animal Genetic Resource Conservation and Germplasm Enhancement, Yunnan Animal Science and Veterinary Institute, Kunming, Yunnan, 650224, China
| | - Han Yang
- Key Laboratory for Porcine Gene Editing and Xenotransplantation in Yunnan Province, College of Veterinary Medicine, Yunnan Agricultural University, Kunming, Yunnan, 650201, China
| | - Jiachong Liang
- National Regional Genebank (Yunnan) of Livestock and Poultry Genetic Resources, Yunnan Provincial Engineering Laboratory of Animal Genetic Resource Conservation and Germplasm Enhancement, Yunnan Animal Science and Veterinary Institute, Kunming, Yunnan, 650224, China
| | - Chunrong Lv
- National Regional Genebank (Yunnan) of Livestock and Poultry Genetic Resources, Yunnan Provincial Engineering Laboratory of Animal Genetic Resource Conservation and Germplasm Enhancement, Yunnan Animal Science and Veterinary Institute, Kunming, Yunnan, 650224, China
| | - Qige Yang
- Key Laboratory for Porcine Gene Editing and Xenotransplantation in Yunnan Province, College of Veterinary Medicine, Yunnan Agricultural University, Kunming, Yunnan, 650201, China
| | - Xinyu Huang
- Key Laboratory for Porcine Gene Editing and Xenotransplantation in Yunnan Province, College of Veterinary Medicine, Yunnan Agricultural University, Kunming, Yunnan, 650201, China
| | - Guobo Quan
- National Regional Genebank (Yunnan) of Livestock and Poultry Genetic Resources, Yunnan Provincial Engineering Laboratory of Animal Genetic Resource Conservation and Germplasm Enhancement, Yunnan Animal Science and Veterinary Institute, Kunming, Yunnan, 650224, China.
| | - Guoquan Wu
- National Regional Genebank (Yunnan) of Livestock and Poultry Genetic Resources, Yunnan Provincial Engineering Laboratory of Animal Genetic Resource Conservation and Germplasm Enhancement, Yunnan Animal Science and Veterinary Institute, Kunming, Yunnan, 650224, China.
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Somfai T. Vitrification of immature oocytes in pigs. Anim Sci J 2024; 95:e13943. [PMID: 38578008 DOI: 10.1111/asj.13943] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2023] [Revised: 02/27/2024] [Accepted: 03/04/2024] [Indexed: 04/06/2024]
Abstract
Cryopreservation of oocytes is an important technology for the in vitro gene banking of female germplasm. Although slow freezing is not feasible, porcine oocytes survive vitrification at high rates. Cryopreservation at the germinal vesicle stage appears to be more advantageous than that at the metaphase-II stage. Several factors are considered to affect the success of vitrification and subsequent utilization of immature porcine oocytes such as the device, the protocols for cryoprotectant application, warming, and the post-warming culture. Although live piglets could be obtained from vitrified immature oocytes, their competence to develop to the blastocyst stage is still reduced compared to their non-vitrified counterparts, indicating that there is room for further improvement. Vitrified oocytes suffer various types of damage and alteration which may reduce their developmental ability. Some of these can recover to some extent during subsequent culture, such as the damage of the cytoskeleton and mitochondria. Others such as premature nuclear progression, DNA damage and epigenetic alterations will require further research to be clarified and addressed. To date, the practical application of oocyte vitrification in pigs has been confined to the gene banking of a few native breeds.
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Affiliation(s)
- Tamás Somfai
- Animal Model Development Group, Division of Biomaterial Sciences, Institute of Agrobiological Sciences, National Agriculture and Food Research Organization, Tsukuba, Japan
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Lee PC, Stewart S, Amelkina O, Sylvester H, He X, Comizzoli P. Trehalose delivered by cold-responsive nanoparticles improves tolerance of cumulus-oocyte complexes to microwave drying. J Assist Reprod Genet 2023:10.1007/s10815-023-02831-x. [PMID: 37261586 PMCID: PMC10371938 DOI: 10.1007/s10815-023-02831-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2023] [Accepted: 05/18/2023] [Indexed: 06/02/2023] Open
Abstract
PURPOSE Trehalose is a non-permeable protectant that is the key to preserve live cells in a dry state for potential storage at ambient temperatures. After intracellular trehalose delivery via cold-responsive nanoparticles (CRNPs), the objective was to characterize the tolerance of cat cumulus-oocyte complexes (COCs) to different levels of microwave-assisted dehydration. METHODS Trehalose was first encapsulated in CRNPs. After exposure to trehalose-laden CRNPs, different water amounts were removed from cat COCs by microwave drying. After each dehydration level, meiotic and developmental competences were evaluated via in vitro maturation, fertilization, and embryo culture. In addition, expressions of critical genes were assessed by quantitative RT-PCR. RESULTS CRNPs effectively transported trehalose into COCs within 4 h of co-incubation at 38.5 °C followed by a cold-triggered release at 4 °C for 15 min. Intracellular presence of trehalose enabled the maintenance of developmental competence (formation of blastocysts) as well as normal gene expression levels of HSP70 and DNMT1 at dehydration levels reaching up to 63% of water loss. CONCLUSION Intracellular trehalose delivery through CRNPs improves dehydration tolerance of COCs, which opens new options for oocyte storage and fertility preservation at ambient temperatures.
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Affiliation(s)
- Pei-Chih Lee
- Smithsonian's National Zoo and Conservation Biology Institute, Washington, D.C., USA
| | - Samantha Stewart
- Fischell Department of Bioengineering, University of Maryland, College Park, MD, USA
| | - Olga Amelkina
- Smithsonian's National Zoo and Conservation Biology Institute, Washington, D.C., USA
| | - Hannah Sylvester
- Smithsonian's National Zoo and Conservation Biology Institute, Washington, D.C., USA
| | - Xiaoming He
- Fischell Department of Bioengineering, University of Maryland, College Park, MD, USA
| | - Pierre Comizzoli
- Smithsonian's National Zoo and Conservation Biology Institute, Washington, D.C., USA.
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Somfai T, Haraguchi S, Dang-Nguyen TQ, Kaneko H, Kikuchi K. Vitrification of porcine immature oocytes and zygotes results in different levels of DNA damage which reflects developmental competence to the blastocyst stage. PLoS One 2023; 18:e0282959. [PMID: 36930621 PMCID: PMC10022796 DOI: 10.1371/journal.pone.0282959] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2022] [Accepted: 02/28/2023] [Indexed: 03/18/2023] Open
Abstract
The present study investigated the effects of vitrification of porcine oocytes either at the immature Germinal Vesicle (GV) stage before in vitro maturation (GV-stage oocytes) or at the pronuclear stage after in vitro maturation and fertilization (zygotes) on DNA integrity in relevance with their subsequent embryo development. Vitrification at the GV stage but not at the pronuclear stage significantly increased the abundance of double-strand breaks (DSBs) in the DNA measured by the relative fluorescence after γH2AX immunostaining. Treatment of GV-stage oocytes with cryoprotectant agents alone had no effect on DSB levels. When oocytes were vitrified at the GV stage and subjected to in vitro maturation and fertilization (Day 0) and embryo culture, significantly increased DSB levels were detected in subsequent cleavage-stage embryos which were associated with low cell numbers on Day 2, the upregulation of the RAD51 gene at the 4-8 cell stage (measured by RT-qPCR) and reduced developmental ability to the blastocyst stage when compared with the non-vitrified control. However, total cell numbers and percentages of apoptotic cells (measured by TUNEL) in resultant blastocysts were not different from those of the non-vitrified control. On the other hand, vitrification of zygotes had no effect on DSB levels and the expression of DNA-repair genes in resultant embryos, and their development did not differ from that of the non-vitrified control. These results indicate that during vitrification GV-stage oocytes are more susceptible to DNA damages than zygotes, which affects their subsequent development to the blastocyst stage.
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Affiliation(s)
- Tamás Somfai
- Institute of Agrobiological Sciences, National Agriculture and Food Research Organization, Tsukuba, Ibaraki, Japan
- * E-mail:
| | - Seiki Haraguchi
- Institute of Agrobiological Sciences, National Agriculture and Food Research Organization, Tsukuba, Ibaraki, Japan
| | - Thanh Quang Dang-Nguyen
- Institute of Agrobiological Sciences, National Agriculture and Food Research Organization, Tsukuba, Ibaraki, Japan
| | - Hiroyuki Kaneko
- Institute of Agrobiological Sciences, National Agriculture and Food Research Organization, Tsukuba, Ibaraki, Japan
| | - Kazuhiro Kikuchi
- Institute of Agrobiological Sciences, National Agriculture and Food Research Organization, Tsukuba, Ibaraki, Japan
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Omelchenko AN, Igonina TN, Brusentsev EY, Okotrub KA, Amstislavsky SY, Surovtsev NV. Cryopreservation increases accumulation of exogenous stearic acid in mouse embryos. Cryobiology 2022; 109:44-52. [PMID: 36179820 DOI: 10.1016/j.cryobiol.2022.09.005] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2022] [Revised: 09/20/2022] [Accepted: 09/23/2022] [Indexed: 01/16/2023]
Abstract
Cryopreservation of preimplantation embryos is a widely used technique, but this procedure might impact the subsequent embryo development. The effect of slow freezing and vitrification on the lipid metabolism in preimplantation mammalian embryos is not well studied. In this work, we applied Raman spectroscopy of isotopically labeled molecules to address the effects of cryopreservation on fatty acid accumulation in mouse embryos. Embryos after slow freezing or vitrification were cultured for 20 h in a medium supplemented with bovine serum albumin saturated with deuterated stearic acid (dSA). After this period the concentration of dSA estimated from Raman spectra of frozen-thawed and vitrified-warmed embryos at the morula stage was almost twice higher compared to non-cryopreserved morulas. At the same time, frozen-thawed and vitrified-warmed 4-cell embryos did not demonstrate any difference in the level of stearic acid uptake from non-cryopreserved embryos of the same stage. After an additional 24 h culture, cryopreserved and non-cryopreserved embryos demonstrated similar dSA uptake.
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Affiliation(s)
- A N Omelchenko
- Novosibirsk State University, Novosibirsk, 630090, Russia; Institute of Automation and Electrometry, Russian Academy of Sciences, Novosibirsk, 630090, Russia
| | - T N Igonina
- Institute of Cytology and Genetics, Russian Academy of Sciences, Novosibirsk, 630090, Russia
| | - E Y Brusentsev
- Institute of Cytology and Genetics, Russian Academy of Sciences, Novosibirsk, 630090, Russia; Institute of Automation and Electrometry, Russian Academy of Sciences, Novosibirsk, 630090, Russia
| | - K A Okotrub
- Institute of Automation and Electrometry, Russian Academy of Sciences, Novosibirsk, 630090, Russia.
| | - S Y Amstislavsky
- Institute of Cytology and Genetics, Russian Academy of Sciences, Novosibirsk, 630090, Russia; Institute of Automation and Electrometry, Russian Academy of Sciences, Novosibirsk, 630090, Russia
| | - N V Surovtsev
- Institute of Automation and Electrometry, Russian Academy of Sciences, Novosibirsk, 630090, Russia
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7
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Zhao H, Dong Y, Zhang Y, Wu X, Zhang X, Liang Y, Li Y, Zeng F, Shi J, Zhou R, Hong L, Cai G, Wu Z, Li Z. Supplementation of SDF1 during Pig Oocyte In Vitro Maturation Improves Subsequent Embryo Development. Molecules 2022; 27:molecules27206830. [PMID: 36296422 PMCID: PMC9609306 DOI: 10.3390/molecules27206830] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2022] [Revised: 10/05/2022] [Accepted: 10/10/2022] [Indexed: 11/16/2022] Open
Abstract
The quality of in vitro matured oocytes is inferior to that of in vivo matured oocytes, which translates to low developmental capacity of embryos derived from in vitro matured oocytes. The developmental potential of in vitro matured oocytes is usually impaired due to oxidative stress. Stromal cell-derived factor-l (SDF1) can reduce oxidative stress and inhibit apoptosis. The aim of this study was to investigate the effects of SDF1 supplementation during pig oocyte in vitro maturation (IVM) on subsequent embryo development, and to explore the acting mechanisms of SDF1 in pig oocytes. We found that the IVM medium containing 20 ng/mL SDF1 improved the maturation rate of pig oocytes, as well as the cleavage rate and blastocyst rate of embryos generated by somatic cell nuclear transfer, in vitro fertilization, and parthenogenesis. Supplementation of 20 ng/mL SDF1 during IVM decreased the ROS level, increased the mitochondrial membrane potential, and altered the expression of apoptosis-related genes in the pig oocytes. The porcine oocyte transcriptomic data showed that SDF1 addition during IVM altered the expression of genes enriched in the purine metabolism and TNF signaling pathways. SDF1 supplementation during pig oocyte IVM also upregulated the mRNA and protein levels of YY1 and TET1, two critical factors for oocyte development. In conclusion, supplementation of SDF1 during pig oocyte IVM reduces oxidative stress, changes expression of genes involved in regulating apoptosis and oocyte growth, and enhances the ability of in vitro matured pig oocytes to support subsequent embryo development. Our findings provide a theoretical basis and a new method for improving the developmental potential of pig in vitro matured oocytes.
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Affiliation(s)
- Huaxing Zhao
- National Engineering Research Center for Breeding Swine Industry, South China Agricultural University, Guangzhou 510030, China
- Department of Animal Genetics, Breeding and Reproduction, College of Animal Science, Guangzhou 510030, China
- Guangdong Provincial Key Laboratory of Agro-Animal Genomics and Molecular Breeding, South China Agricultural University, Guangzhou 510030, China
| | - Yazheng Dong
- National Engineering Research Center for Breeding Swine Industry, South China Agricultural University, Guangzhou 510030, China
- Department of Animal Genetics, Breeding and Reproduction, College of Animal Science, Guangzhou 510030, China
- Guangdong Provincial Key Laboratory of Agro-Animal Genomics and Molecular Breeding, South China Agricultural University, Guangzhou 510030, China
| | - Yuxing Zhang
- National Engineering Research Center for Breeding Swine Industry, South China Agricultural University, Guangzhou 510030, China
- Department of Animal Genetics, Breeding and Reproduction, College of Animal Science, Guangzhou 510030, China
- Guangdong Provincial Key Laboratory of Agro-Animal Genomics and Molecular Breeding, South China Agricultural University, Guangzhou 510030, China
| | - Xiao Wu
- National Engineering Research Center for Breeding Swine Industry, South China Agricultural University, Guangzhou 510030, China
- Department of Animal Genetics, Breeding and Reproduction, College of Animal Science, Guangzhou 510030, China
- Guangdong Provincial Key Laboratory of Agro-Animal Genomics and Molecular Breeding, South China Agricultural University, Guangzhou 510030, China
| | - Xianjun Zhang
- National Engineering Research Center for Breeding Swine Industry, South China Agricultural University, Guangzhou 510030, China
- Department of Animal Genetics, Breeding and Reproduction, College of Animal Science, Guangzhou 510030, China
- Guangdong Provincial Key Laboratory of Agro-Animal Genomics and Molecular Breeding, South China Agricultural University, Guangzhou 510030, China
| | - Yalin Liang
- National Engineering Research Center for Breeding Swine Industry, South China Agricultural University, Guangzhou 510030, China
- Department of Animal Genetics, Breeding and Reproduction, College of Animal Science, Guangzhou 510030, China
- Guangdong Provincial Key Laboratory of Agro-Animal Genomics and Molecular Breeding, South China Agricultural University, Guangzhou 510030, China
| | - Yanan Li
- National Engineering Research Center for Breeding Swine Industry, South China Agricultural University, Guangzhou 510030, China
- Department of Animal Genetics, Breeding and Reproduction, College of Animal Science, Guangzhou 510030, China
- Guangdong Provincial Key Laboratory of Agro-Animal Genomics and Molecular Breeding, South China Agricultural University, Guangzhou 510030, China
| | - Fang Zeng
- College of Marine Science, South China Agricultural University, Guangzhou 510030, China
| | - Junsong Shi
- Department of Animal Genetics, Breeding and Reproduction, College of Animal Science, Guangzhou 510030, China
- Guangdong Wens Breeding Swine Technology Co., Ltd., Yunfu 527400, China
| | - Rong Zhou
- Guangdong Wens Breeding Swine Technology Co., Ltd., Yunfu 527400, China
| | - Linjun Hong
- National Engineering Research Center for Breeding Swine Industry, South China Agricultural University, Guangzhou 510030, China
- Department of Animal Genetics, Breeding and Reproduction, College of Animal Science, Guangzhou 510030, China
- Guangdong Provincial Key Laboratory of Agro-Animal Genomics and Molecular Breeding, South China Agricultural University, Guangzhou 510030, China
| | - Gengyuan Cai
- National Engineering Research Center for Breeding Swine Industry, South China Agricultural University, Guangzhou 510030, China
- Department of Animal Genetics, Breeding and Reproduction, College of Animal Science, Guangzhou 510030, China
- Guangdong Provincial Key Laboratory of Agro-Animal Genomics and Molecular Breeding, South China Agricultural University, Guangzhou 510030, China
| | - Zhenfang Wu
- National Engineering Research Center for Breeding Swine Industry, South China Agricultural University, Guangzhou 510030, China
- Department of Animal Genetics, Breeding and Reproduction, College of Animal Science, Guangzhou 510030, China
- Guangdong Provincial Key Laboratory of Agro-Animal Genomics and Molecular Breeding, South China Agricultural University, Guangzhou 510030, China
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, South China Agricultural University, Guangzhou 510030, China
- Correspondence: (Z.W.); (Z.L.)
| | - Zicong Li
- National Engineering Research Center for Breeding Swine Industry, South China Agricultural University, Guangzhou 510030, China
- Department of Animal Genetics, Breeding and Reproduction, College of Animal Science, Guangzhou 510030, China
- Guangdong Provincial Key Laboratory of Agro-Animal Genomics and Molecular Breeding, South China Agricultural University, Guangzhou 510030, China
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, South China Agricultural University, Guangzhou 510030, China
- Correspondence: (Z.W.); (Z.L.)
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E Z, Zhao Y, Sun J, Zhang X, Jin Q, Gao Q. Glyphosate decreases bovine oocyte quality by inducing oxidative stress and apoptosis. ZYGOTE 2022; 30:704-711. [PMID: 35677960 DOI: 10.1017/s0967199422000181] [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: 11/07/2022]
Abstract
Glyphosate is a universal herbicide with genital toxicity, but the effect of glyphosate on oocytes has not been reported. This study aimed to evaluate the effect of glyphosate (0, 10, 20, 50 and 100 mM) on bovine oocyte in vitro maturation. We showed that 50 mM glyphosate adversely affects the development of bovine oocytes. Exposure of oocytes to 50 mM glyphosate caused an abnormal reduction in oxidative (redox) levels compared with that in the control group, with a significantly higher reactive oxide species level (P < 0.05) and significantly lower glutathione (GSH) expression (P < 0.05). Additionally, the mRNA levels of antioxidant genes (SOD1, SOD2, SIRT2, SIRT3) and the mitochondrial membrane potential (MMP) were significantly reduced (P < 0.05). Furthermore, treatment with 50 mM glyphosate-induced apoptosis, and the mRNA levels of the apoptotic genes Caspase-3 and Caspase-4 were significantly higher than those in the control group (P < 0.05); however, the mRNA level of BAX was significantly higher than that in the control group (P < 0.01). Additionally, the mRNA levels of the anti-apoptotic genes Survivin and BCL-XL were significantly lower than those in the control group (P < 0.05), and oocyte quality was adversely affected. Together, our results confirmed that glyphosate impairs the quality of oocytes by promoting abnormal oocyte redox levels and apoptosis.
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Affiliation(s)
- Zhiqiang E
- Engineering Research Center of North-East Cold Region Beef Cattle Science & Technology Innovation, Ministry of Education, Yanbian University, Yanji, 133002, China
- College of Agriculture, Yanbian University, China
- Jilin Engineering Research Center of Yanbian Yellow Cattle Resources Reservation, China
| | - Yuhan Zhao
- Engineering Research Center of North-East Cold Region Beef Cattle Science & Technology Innovation, Ministry of Education, Yanbian University, Yanji, 133002, China
- College of Agriculture, Yanbian University, China
- Jilin Engineering Research Center of Yanbian Yellow Cattle Resources Reservation, China
| | - Jingyu Sun
- Engineering Research Center of North-East Cold Region Beef Cattle Science & Technology Innovation, Ministry of Education, Yanbian University, Yanji, 133002, China
- College of Agriculture, Yanbian University, China
- Jilin Engineering Research Center of Yanbian Yellow Cattle Resources Reservation, China
| | - Xiaomeng Zhang
- Engineering Research Center of North-East Cold Region Beef Cattle Science & Technology Innovation, Ministry of Education, Yanbian University, Yanji, 133002, China
- College of Agriculture, Yanbian University, China
- Jilin Engineering Research Center of Yanbian Yellow Cattle Resources Reservation, China
| | - Qingguo Jin
- Engineering Research Center of North-East Cold Region Beef Cattle Science & Technology Innovation, Ministry of Education, Yanbian University, Yanji, 133002, China
- College of Agriculture, Yanbian University, China
- Jilin Engineering Research Center of Yanbian Yellow Cattle Resources Reservation, China
| | - Qingshan Gao
- Engineering Research Center of North-East Cold Region Beef Cattle Science & Technology Innovation, Ministry of Education, Yanbian University, Yanji, 133002, China
- College of Agriculture, Yanbian University, China
- Jilin Engineering Research Center of Yanbian Yellow Cattle Resources Reservation, China
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Mateo-Otero Y, Yeste M, Damato A, Giaretta E. Cryopreservation and oxidative stress in porcine oocytes. Res Vet Sci 2021; 135:20-26. [PMID: 33418187 DOI: 10.1016/j.rvsc.2020.12.024] [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: 10/12/2020] [Revised: 12/04/2020] [Accepted: 12/29/2020] [Indexed: 02/06/2023]
Abstract
Several vitrification protocols have been established for porcine oocytes so as to facilitate gene banking of female germplasm. Although live piglets have been successfully produced from pig oocytes vitrified at the germinal vesicle (GV) stage, the competence of vitrified oocytes to develop into the blastocyst stage is greatly compromised following cryopreservation. The focus of this review is to elucidate the impact of cryopreservation on the redox balance of pig oocytes, making special reference to the relevance of non-enzymatic and enzymatic antioxidant defences. Besides, the regulation of gene expression in response to oxidative stress is also considered. Finally, we discuss the effects of supplementing maturation and vitrification media with the exogenous non-enzymatic antioxidants that have hitherto yielded the most relevant results.
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Affiliation(s)
- Yentel Mateo-Otero
- Biotechnology of Animal and Human Reproduction (TechnoSperm), Institute of Food and Agricultural Technology, University of Girona, E-17003 Girona, Spain; Unit of Cell Biology, Department of Biology, Faculty of Sciences, University of Girona, E-17003 Girona, Spain
| | - Marc Yeste
- Biotechnology of Animal and Human Reproduction (TechnoSperm), Institute of Food and Agricultural Technology, University of Girona, E-17003 Girona, Spain; Unit of Cell Biology, Department of Biology, Faculty of Sciences, University of Girona, E-17003 Girona, Spain.
| | - Anna Damato
- Department of Comparative Biomedicine and Food Science, University of Padova, Legnaro, PD, Italy
| | - Elisa Giaretta
- Department of Comparative Biomedicine and Food Science, University of Padova, Legnaro, PD, Italy.
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10
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Casillas F, Ducolomb Y, López A, Betancourt M. Effect of porcine immature oocyte vitrification on oocyte-cumulus cell gap junctional intercellular communication. Porcine Health Manag 2020; 6:37. [PMID: 33292603 PMCID: PMC7687833 DOI: 10.1186/s40813-020-00175-x] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2020] [Accepted: 11/06/2020] [Indexed: 01/27/2023] Open
Abstract
Vitrification may severely affect cumulus cells and oocyte morphology and viability, limiting their maturation and developmental potential. The aim of this study was to evaluate the gap junction intercellular communication (GJIC) integrity after the vitrification of porcine immature cumulus-oocyte complexes (COCs). Fresh COCs were randomly distributed in three groups: untreated (control), toxicity (cryoprotectants exposure), and vitrification, then subjected to in vitro maturation (IVM). Oocyte viability and IVM were measured in all groups. The evaluation of GJIC was expressed as relative fluorescence intensity (RFI). Vitrification significantly decreased oocyte viability and maturation after 44 h of culture compared to control. Also, significantly reduced RFI was observed in vitrified COCs during the first hours of culture (4-8 h) compared to control. This study demonstrates that porcine oocyte viability and maturation after 44 h of culture decreased after vitrification. GJIC was also affected during the first hours of culture after the vitrification of immature oocytes, being one of the possible mechanisms by which oocyte maturation decreased.
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Affiliation(s)
- Fahiel Casillas
- Departamento de Biología de la Reproducción, División de Ciencias Biológicas y de la Salud, Universidad Autónoma Metropolitana-Iztapalapa, 09340, CDMX, México.
| | - Yvonne Ducolomb
- Departamento de Ciencias de la Salud, División de Ciencias Biológicas y de la Salud, Universidad Autónoma Metropolitana-Iztapalapa, 09340, CDMX, México
| | - Alma López
- Departamento de Ciencias de la Salud, División de Ciencias Biológicas y de la Salud, Universidad Autónoma Metropolitana-Iztapalapa, 09340, CDMX, México
| | - Miguel Betancourt
- Departamento de Ciencias de la Salud, División de Ciencias Biológicas y de la Salud, Universidad Autónoma Metropolitana-Iztapalapa, 09340, CDMX, México
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