1
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Redel BK, Spate LD, Yuan Y, Murphy CN, Roberts RM, Prather RS. Neither gonadotropin nor cumulus cell expansion is needed for the maturation of competent porcine oocytes in vitro†. Biol Reprod 2021; 105:533-542. [PMID: 33962465 DOI: 10.1093/biolre/ioab090] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2021] [Revised: 04/14/2021] [Accepted: 04/26/2021] [Indexed: 12/26/2022] Open
Abstract
In-vitro maturation (IVM) of oocytes from immature females is widely used in assisted reproductive technologies. Here we illustrate that cumulus cell (CC) expansion, once considered a key indicator of oocyte quality, is not needed for oocytes to mature to the metaphase II (MII) stage and to gain nuclear and cytoplasmic competence to produce offspring. Juvenile pig oocytes were matured in four different media: (1) Basal (-gonadotropins (GN) - FLI); (2) -GN + FLI (supplement of FGF2, LIF, and IGF1); (3) +GN - FLI; and (4) +GN + FLI. There was no difference in maturation to MII or progression to the blastocyst stage after fertilization of oocytes that had been matured in -GN + FLI medium and oocytes matured in +GN + FLI medium. Only slight CC expansion occurred in the two media lacking GN compared with the two where GN was present. The cumulus-oocytes-complexes (COC) matured in +GN + FLI exhibited the greatest expansion. We conclude that FLI has a dual role. It is directly responsible for oocyte competence, a process where GN are not required, and, when GN are present, it has a downstream role in enhancing CC expansion. Our study also shows that elevated phosphorylated MAPK may not be a necessary correlate of oocyte maturation and that the greater utilization of glucose by COC observed in +GN + FLI medium probably plays a more significant role to meet the biosynthetic needs of the CC to expand than to attain oocyte developmental competence. Gene expression analyses have not been informative in providing a mechanism to explain how FLI medium enhances oocyte competence without promoting CC expansion.
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Affiliation(s)
- Bethany K Redel
- Division of Animal Sciences, University of Missouri, Columbia, MO, USA
| | - Lee D Spate
- Division of Animal Sciences, University of Missouri, Columbia, MO, USA
| | - Ye Yuan
- Colorado Center for Reproductive Medicine, Lone Tree, CO, USA
| | - Clifton N Murphy
- Division of Animal Sciences, University of Missouri, Columbia, MO, USA
| | - R Michael Roberts
- Division of Animal Sciences, University of Missouri, Columbia, MO, USA.,Bond Life Sciences Center, University of Missouri, Columbia, MO, USA
| | - Randall S Prather
- Division of Animal Sciences, University of Missouri, Columbia, MO, USA
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2
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Silvestri G, Rathje CC, Harvey SC, Gould RL, Walling GA, Ellis PJ, Harvey KE, Griffin DK. Identification of optimal assisted aspiration conditions of oocytes for use in porcine in vitro maturation: A re‐evaluation of the relationship between the cumulus oocyte complex and oocyte quality. Vet Med Sci 2020. [PMCID: PMC8323607 DOI: 10.1002/vms3.378] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
The quality of porcine oocytes for use in IVF is commonly graded according to the number of layers of cumulus cells (CCs) surrounding the oocyte; together these form the cumulus oocyte complex (COC). At least three compact layers of CCs is regarded as important for efficient IVP. To test this, oocytes were scored according to cumulus investment, with grade A representing COCs with three or more cumulus layers including granulosa cell‐cumulus oocyte complexes, grade B those with an intact corona radiata surrounded by another layer of cumulus cells and grades C and D representing COCs with lower CC investment. These oocytes were then monitored for in vitro maturation (IVM), as assessed by tubulin immunostaining for meiotic progression, the development of a cortical granule ring, and by glutathione levels. Results indicate that grading correlates closely with nuclear maturation and cytoplasmic maturation, suggesting that grading oocytes by cumulus investment is a reliable method to predict IVM success. Importantly, Grade A and B oocytes showed no significant differences in any measure and hence using a cut‐off of two or more CC layers may be optimal. We also determined the effect of assisted aspiration for oocyte retrieval, comparing the effect of needle size and applied pressure on the retrieval rate. These data indicated that both variables affected oocyte recovery rates and the quality of recovered oocytes. In combination, these experiments indicate that grade A and B oocytes have a similar developmental potential and that the recovery of oocytes of these grades is maximised by use of an 18‐gauge needle and 50 mmHg aspiration pressure.
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Affiliation(s)
| | | | - Simon C. Harvey
- School of Psychology and Life Sciences Canterbury Christ Church University Canterbury UK
| | | | | | | | - Katie E. Harvey
- School of Psychology and Life Sciences Canterbury Christ Church University Canterbury UK
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3
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Lucas CG, Spate AM, Samuel MS, Spate LD, Warren WC, Prather RS, Wells KD. A novel swine sex-linked marker and its application across different mammalian species. Transgenic Res 2020; 29:395-407. [PMID: 32607872 DOI: 10.1007/s11248-020-00204-z] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2020] [Accepted: 06/18/2020] [Indexed: 01/25/2023]
Abstract
Advances in genome editing tools have reduced barriers to the creation of animal models. Due to their anatomical and physiological similarities to humans, there has been a growing need for pig models to study human diseases, for xenotransplantation and translational research. The ability to determine the sex of genetically modified embryos, cells or fetuses is beneficial for every project involving the production of transgenic animals. This strategy can improve the time-efficiency and lower the production costs. Additionally, sex assessment is very useful for wildlife studies to understand population behavior and structure. Thus, we developed a simple and fast PCR-based protocol for sex determination in pigs by using a unique primer set to amplify either the DDX3X or DDX3Y gene. The sex was 100% correctly assigned when tail genomic DNA, Day-35 fetus and hair samples from pigs were used. For both blastocysts and oocytes (84.6% and 96.5% of efficacy, respectively) the unidentified samples were potentially due to a limitation in sample size. Our assay also worked for domestic sheep (Ovis aries), American bison (Bison bison) and European cattle (Bos taurus) samples and by in silico analysis we confirmed X-Y amplicon length polymorphisms for the DDX3 gene in 12 other mammalian species. This PCR protocol for determining sex in pig tissues and cells showed to be simple, specific, highly reproducible and less time consuming as well as an important tool for other livestock species and wildlife studies.
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Affiliation(s)
- C G Lucas
- National Swine Resource and Research Center, University of Missouri, 920 East Campus Drive, Columbia, MO, 65211, USA.,Division of Animal Science, University of Missouri, Columbia, MO, USA
| | - A M Spate
- National Swine Resource and Research Center, University of Missouri, 920 East Campus Drive, Columbia, MO, 65211, USA.,Division of Animal Science, University of Missouri, Columbia, MO, USA
| | - M S Samuel
- National Swine Resource and Research Center, University of Missouri, 920 East Campus Drive, Columbia, MO, 65211, USA.,Division of Animal Science, University of Missouri, Columbia, MO, USA
| | - L D Spate
- Division of Animal Science, University of Missouri, Columbia, MO, USA
| | - W C Warren
- Bond Life Sciences Center, University of Missouri, Columbia, MO, USA
| | - R S Prather
- National Swine Resource and Research Center, University of Missouri, 920 East Campus Drive, Columbia, MO, 65211, USA.,Division of Animal Science, University of Missouri, Columbia, MO, USA
| | - K D Wells
- National Swine Resource and Research Center, University of Missouri, 920 East Campus Drive, Columbia, MO, 65211, USA. .,Division of Animal Science, University of Missouri, Columbia, MO, USA.
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4
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Cao Z, Xu T, Tong X, Zhang D, Liu C, Wang Y, Gao D, Luo L, Zhang L, Li Y, Zhang Y. HASPIN kinase mediates histone deacetylation to regulate oocyte meiotic maturation in pigs. Reproduction 2020; 157:501-510. [PMID: 30870811 DOI: 10.1530/rep-18-0447] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2018] [Accepted: 03/14/2019] [Indexed: 01/17/2023]
Abstract
HASPIN kinase-catalyzed phosphorylation of histone H3 on threonine 3 (H3T3p) directs the activity and localization of chromosomal passenger complex (CPC) and spindle assembly checkpoint (SAC) to regulate chromosome condensation and segregation in both mitosis and meiosis. However, the function of HASPIN kinase in the meiotic maturation of porcine oocytes is not yet known. Here, we found that HASPIN mRNA is constantly expressed in porcine oocyte maturation and subsequent early embryo development. H3T3p is highly enriched on chromosomes at germinal vesicle breakdown (GVBD) stage and thereafter maintains a low level in progression through metaphase I (MI) to metaphase II (MII). Correspondingly, H3T3p was completely abolished in oocytes treated with an inhibitor of HASPIN kinase. Functionally, inhibition of HASPIN activity led to a significant reduction in the rate of oocyte meiotic maturation and the limited cumulus expansion. Additionally, HASPIN inhibition caused both spindle disorganization and chromosome misalignment in oocytes at MI and MII stage. Importantly, HASPIN inhibition severely prevented deacetylation of several highly conserved lysine (K) residues of histone H3 and H4 including H3K9, H3K14, H4K5, H4K8, H4K12 and H4K16 on the metaphase chromosomes during oocyte meiotic maturation. Taken together, these results demonstrate that HASPIN kinase regulates porcine oocyte meiotic maturation via modulating histone deacetylation.
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Affiliation(s)
- Zubing Cao
- Anhui Province Key Laboratory of Local Livestock and Poultry, Genetical Resource Conservation and Breeding, College of Animal Science and Technology, Anhui Agricultural University, Hefei, China
| | - Tengteng Xu
- Anhui Province Key Laboratory of Local Livestock and Poultry, Genetical Resource Conservation and Breeding, College of Animal Science and Technology, Anhui Agricultural University, Hefei, China
| | - Xu Tong
- Anhui Province Key Laboratory of Local Livestock and Poultry, Genetical Resource Conservation and Breeding, College of Animal Science and Technology, Anhui Agricultural University, Hefei, China
| | - Dandan Zhang
- Anhui Province Key Laboratory of Local Livestock and Poultry, Genetical Resource Conservation and Breeding, College of Animal Science and Technology, Anhui Agricultural University, Hefei, China
| | - Chengxue Liu
- Anhui Province Key Laboratory of Local Livestock and Poultry, Genetical Resource Conservation and Breeding, College of Animal Science and Technology, Anhui Agricultural University, Hefei, China
| | - Yiqing Wang
- Anhui Province Key Laboratory of Local Livestock and Poultry, Genetical Resource Conservation and Breeding, College of Animal Science and Technology, Anhui Agricultural University, Hefei, China
| | - Di Gao
- Anhui Province Key Laboratory of Local Livestock and Poultry, Genetical Resource Conservation and Breeding, College of Animal Science and Technology, Anhui Agricultural University, Hefei, China
| | - Lei Luo
- Anhui Province Key Laboratory of Local Livestock and Poultry, Genetical Resource Conservation and Breeding, College of Animal Science and Technology, Anhui Agricultural University, Hefei, China
| | - Ling Zhang
- Anhui Province Key Laboratory of Local Livestock and Poultry, Genetical Resource Conservation and Breeding, College of Animal Science and Technology, Anhui Agricultural University, Hefei, China
| | - Yunsheng Li
- Anhui Province Key Laboratory of Local Livestock and Poultry, Genetical Resource Conservation and Breeding, College of Animal Science and Technology, Anhui Agricultural University, Hefei, China
| | - Yunhai Zhang
- Anhui Province Key Laboratory of Local Livestock and Poultry, Genetical Resource Conservation and Breeding, College of Animal Science and Technology, Anhui Agricultural University, Hefei, China
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5
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Chen PR, Redel BK, Spate LD, Ji T, Salazar SR, Prather RS. Glutamine supplementation enhances development of in vitro-produced porcine embryos and increases leucine consumption from the medium. Biol Reprod 2019; 99:938-948. [PMID: 29860318 DOI: 10.1093/biolre/ioy129] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2018] [Accepted: 05/30/2018] [Indexed: 01/30/2023] Open
Abstract
Improper composition of culture medium contributes to reduced viability of in vitro-produced embryos. Glutamine (Gln) is a crucial amino acid for preimplantation embryos as it supports proliferation and is involved in many different biosynthetic pathways. Previous transcriptional profiling revealed several upregulated genes related to Gln transport and metabolism in in vitro-produced porcine blastocysts compared to in vivo-produced counterparts, indicating a potential deficiency in the culture medium. Therefore, the objective of this study was to determine the effects of Gln supplementation on in vitro-produced porcine embryo development, gene expression, and metabolism. Cleaved embryos were selected and cultured in MU2 medium supplemented with 1 mM Gln (control), 3.75 mM Gln (+Gln), 3.75 mM GlutaMAX (+Max), or 3.75 mM alanine (+Ala) until day 6. Embryos cultured with +Gln or +Max had increased development to the blastocyst stage and total number of nuclei compared to the control (P < 0.05). Moreover, expression of misregulated transcripts involved in glutamine and glutamate transport and metabolism was corrected when embryos were cultured with +Gln or +Max. Metabolomics analysis revealed increased production of glutamine and glutamate into the medium by embryos cultured with +Max and increased consumption of leucine by embryos cultured with +Gln or +Max. As an indicator of cellular health, mitochondrial membrane potential was increased when embryos were cultured with +Max which was coincident with decreased apoptosis in these blastocysts. Lastly, two embryo transfers by using embryos cultured with +Max resulted in viable piglets, confirming that this treatment is consistent with in vivo developmental competence.
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Affiliation(s)
- Paula R Chen
- Division of Animal Sciences, University of Missouri, Columbia, Missouri, USA
| | - Bethany K Redel
- Division of Animal Sciences, University of Missouri, Columbia, Missouri, USA
| | - Lee D Spate
- Division of Animal Sciences, University of Missouri, Columbia, Missouri, USA
| | - Tieming Ji
- Department of Statistics, University of Missouri, Columbia, Missouri, USA
| | | | - Randall S Prather
- Division of Animal Sciences, University of Missouri, Columbia, Missouri, USA
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6
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Wang X, Zhu X, Liang X, Xu H, Liao Y, Lu K, Lu S. Effects of resveratrol on in vitro maturation of porcine oocytes and subsequent early embryonic development following somatic cell nuclear transfer. Reprod Domest Anim 2019; 54:1195-1205. [PMID: 31228864 DOI: 10.1111/rda.13493] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2019] [Accepted: 06/17/2019] [Indexed: 12/20/2022]
Abstract
As a natural plant-derived antitoxin, resveratrol possesses several pharmacological activities. This study aimed to evaluate the effects of resveratrol addition on nuclear maturation, oocyte quality during in vitro maturation (IVM) of porcine oocytes and subsequent early embryonic development following somatic cell nuclear transfer (SCNT). Our experiments showed that the treatment of porcine oocytes with 5 µM resveratrol during IVM resulted in the highest rate of the first polar body extrusion. Treatment of oocytes with resveratrol had no influence on cytoskeletal dynamics, whereas it significantly increased glucose uptake ability compared to the control oocytes. Oocytes matured with 5 μM resveratrol displayed significantly lower intracellular reactive oxygen species (ROS) levels and higher relative mRNA expression levels of the genes encoding such antioxidant enzymes as catalase (CAT) and superoxide dismutase 1 (SOD1). In addition, resveratrol also prevented onset and progression of programmed cell death in porcine oocytes, which was confirmed by significant upregulation of the anti-apoptotic B-cell lymphoma 2 (BCL-2) gene and significant downregulation of the pro-apoptotic BCL2-associated X (BAX) gene. Furthermore, the blastocyst rates and the blastocyst cell numbers in cloned embryos derived from the oocytes that had matured in the presence of 5 μM resveratrol were significantly increased. In conclusion, supplementation of IVM medium with 5 μM resveratrol improves the quality of porcine oocytes by protecting them from oxidative damage and apoptosis, which leads to the production of meiotically matured oocytes exhibiting enhanced developmental potential following SCNT.
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Affiliation(s)
- Xuefang Wang
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, Guangxi High Education Key Laboratory for Animal Reproduction and Biotechnology, Faculty of Animal Science & Technology, Guangxi University, Nanning, China
| | - Xiangxing Zhu
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, Guangxi High Education Key Laboratory for Animal Reproduction and Biotechnology, Faculty of Animal Science & Technology, Guangxi University, Nanning, China.,School of Medical Engineering, Foshan University, Foshan, China
| | - Xingwei Liang
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, Guangxi High Education Key Laboratory for Animal Reproduction and Biotechnology, Faculty of Animal Science & Technology, Guangxi University, Nanning, China
| | - Huiyan Xu
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, Guangxi High Education Key Laboratory for Animal Reproduction and Biotechnology, Faculty of Animal Science & Technology, Guangxi University, Nanning, China
| | - Yuying Liao
- Guangxi Key Laboratory of Livestock Genetic Improvement, Guangxi Institute of Animal Sciences, Nanning, China
| | - Kehuan Lu
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, Guangxi High Education Key Laboratory for Animal Reproduction and Biotechnology, Faculty of Animal Science & Technology, Guangxi University, Nanning, China
| | - Shengsheng Lu
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, Guangxi High Education Key Laboratory for Animal Reproduction and Biotechnology, Faculty of Animal Science & Technology, Guangxi University, Nanning, China
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7
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Lee SH, Oh HJ, Kim MJ, Setyawan EMN, Lee BC. Interaction of the EGFR signaling pathway with porcine cumulus oocyte complexes and oviduct cells in a coculture system. J Cell Physiol 2018; 234:4030-4043. [PMID: 30252133 DOI: 10.1002/jcp.27170] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2017] [Accepted: 07/16/2018] [Indexed: 11/11/2022]
Abstract
It has become increasingly recognized that coculture has a beneficial effect on the in vitro maturation (IVM) of oocytes and embryo development in many species. However, these effects of coculture on IVM have been documented only for their positive conditioning roles without any evidence on the precise mechanisms underlying the action of coculture systems on the development of cumulus oocyte complexes (COCs). It has been suggested that the epidermal growth factor receptor (EGFR) signaling pathway is important for development of COCs, mediated by several epidermal growth factor (EGF)-like proteins with downstream mitogen-activated protein kinase 1/3 signaling. Therefore, we hypothesized that canine oviduct cells (OCs) in a coculture system, which shows improvement of oocyte quality in several species, are associated with EGFR signaling by exposure to progesterone (P4; imitating its production before ovulation and its continuous increase while oocytes reside in the oviduct to complete maturation in dogs). We designed three experimental groups: control, OCs coculture exposed to P4, and OCs coculture without exposure to P4. The result showed that the OCs coculture exposed to P4 strongly expressed EGF-like proteins and significantly improved COCs and subsequent embryo development. Furthermore, the expression of EGFR-related genes in cumulus cells and GDF9 and BMP15 in oocytes was upregulated in the P4-treated group. This study provides the first evidence that OCs exposed to P4 can induce strong expression of EGF-like proteins, and OCs effectively mediate improved porcine COCs development and subsequent embryo development by altering EGFR signaling related mRNA expression.
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Affiliation(s)
- Seok Hee Lee
- Department of Theriogenology and Biotechnology, College of Veterinary Medicine, Seoul National University, Seoul, Republic of Korea
| | - Hyun Ju Oh
- Department of Theriogenology and Biotechnology, College of Veterinary Medicine, Seoul National University, Seoul, Republic of Korea
| | - Min Jung Kim
- Department of Theriogenology and Biotechnology, College of Veterinary Medicine, Seoul National University, Seoul, Republic of Korea
| | - Erif Maha Nugraha Setyawan
- Department of Theriogenology and Biotechnology, College of Veterinary Medicine, Seoul National University, Seoul, Republic of Korea
| | - Byeong Chun Lee
- Department of Theriogenology and Biotechnology, College of Veterinary Medicine, Seoul National University, Seoul, Republic of Korea
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8
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Follicular fluid and supernatant from cultured cumulus-granulosa cells improve in vitro maturation in patients with polycystic ovarian syndrome. Fertil Steril 2018; 110:710-719. [DOI: 10.1016/j.fertnstert.2018.04.038] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2017] [Revised: 04/24/2018] [Accepted: 04/26/2018] [Indexed: 12/19/2022]
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9
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Cao Z, Gao D, Xu T, Tong X, Wang Y, Li Y, Fang F, Ding J, Zhang X, Zhang Y. Human exhaled air can efficiently support in vitro maturation of porcine oocytes and subsequent early embryonic development. Anim Reprod 2018; 15:29-38. [PMID: 33365092 PMCID: PMC7746221 DOI: 10.21451/1984-3143-ar2017-0027] [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] [Indexed: 11/24/2022] Open
Abstract
Air phase is an indispensable environmental factor affecting oocyte maturation and early
embryo development. Human exhaled air was previously proved to be a reliable and inexpensive
atmosphere that sustains normal early development of mouse and bovine embryos. However,
whether human exhaled air can support in vitro maturation (IVM) of porcine
oocytes is not yet known. To evaluate the feasibility of maturing oocytes in human exhaled
air, we examined oocyte morphology, BMP15 expression, nuclear and cytoplasmic
maturation. We found that cumulus expansion status, expression levels of BMP15
important for cumulus expansion and the rate of first polar body emission were similar
among human exhaled air, 5% O2 or 20% O2 in air after IVM of 44 h. Furthermore,
the percentage of metaphase II (MII) oocytes showing normal cortical and sub-membranous
localization of cortical granules and diffused mitochondrial distribution patterns is
comparable among groups. The cleavage, blastocyst rate and total cell number were not apparently
different for parthenogenetic activated and somatic cloned embryos derived from MII oocytes
matured in three air phases, suggesting oocytes matured in human exhaled air obtain normal
developmental competence. Taken together, human exhaled air can efficiently support
in vitro maturation of porcine oocytes and subsequent early embryonic development.
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Affiliation(s)
- Zubing Cao
- Anhui Provincial Laboratory of Local Livestock and Poultry, Genetical Resource Conservation and Breeding, College of Animal Science and Technology, , ,
| | - Di Gao
- Anhui Provincial Laboratory of Local Livestock and Poultry, Genetical Resource Conservation and Breeding, College of Animal Science and Technology, , ,
| | - Tengteng Xu
- Anhui Provincial Laboratory of Local Livestock and Poultry, Genetical Resource Conservation and Breeding, College of Animal Science and Technology, , ,
| | - Xu Tong
- Anhui Provincial Laboratory of Local Livestock and Poultry, Genetical Resource Conservation and Breeding, College of Animal Science and Technology, , ,
| | - Yiqing Wang
- Anhui Provincial Laboratory of Local Livestock and Poultry, Genetical Resource Conservation and Breeding, College of Animal Science and Technology, , ,
| | - Yunsheng Li
- Anhui Provincial Laboratory of Local Livestock and Poultry, Genetical Resource Conservation and Breeding, College of Animal Science and Technology, , ,
| | - Fugui Fang
- Anhui Provincial Laboratory of Local Livestock and Poultry, Genetical Resource Conservation and Breeding, College of Animal Science and Technology, , ,
| | - Jianping Ding
- Anhui Provincial Laboratory of Local Livestock and Poultry, Genetical Resource Conservation and Breeding, College of Animal Science and Technology, , ,
| | - Xiaorong Zhang
- Anhui Provincial Laboratory of Local Livestock and Poultry, Genetical Resource Conservation and Breeding, College of Animal Science and Technology, , ,
| | - Yunhai Zhang
- Anhui Provincial Laboratory of Local Livestock and Poultry, Genetical Resource Conservation and Breeding, College of Animal Science and Technology, , ,
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10
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Casillas F, Betancourt M, Cuello C, Ducolomb Y, López A, Juárez-Rojas L, Retana-Márquez S. An efficiency comparison of different in vitro fertilization methods: IVF, ICSI, and PICSI for embryo development to the blastocyst stage from vitrified porcine immature oocytes. Porcine Health Manag 2018; 4:16. [PMID: 30123521 PMCID: PMC6088397 DOI: 10.1186/s40813-018-0093-6] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2018] [Accepted: 06/20/2018] [Indexed: 12/30/2022] Open
Abstract
Background Most studies carried out to evaluate recovery and development after porcine oocyte vitrification, reported better rates when cryopreserved in embryonic development stages or zygotes, but not in immature oocytes. For this reason, many studies are performed to improve immature oocyte vitrification protocols testing the use of different cryoprotectant concentrations, cooling devices, incubation times; but only a few of them have evaluated which fertilization procedure enhances blastocyst rates in vitrified oocytes. Therefore, this study was aimed to evaluate: 1) if the sperm selection with hyaluronic acid (HA) or polyvinylpyrrolidone (PVP) before injection could play a key role in increasing fertilization and blastocyst formation and 2) the embryo developmental ability and blastocyst production of porcine immature oocytes retrieved after vitrification-warming and co-cultured with granulosa cells during IVM, using different fertilization techniques: in vitro fertilization (IVF), intracytoplasmic sperm injection (ICSI) and conventional ICSI with hyaluronic acid (HA) sperm selection, known as physiological intracytoplasmic sperm injection (PICSI) and. Results Sperm selected with HA-PICSI displayed a higher percentage of live/acrosome reacted status compared to those in control and exposed to PVP. Higher dead/acrosome reacted rates were obtained after PVP exposure compared to control and HA. In oocytes, viability significantly decreased after IVM in vitrified oocytes. Besides, IVM rates were not different between control denuded oocytes cultured with granulosa cells (DO-GC) and vitrified oocytes. Regarding fertilization parameters, IVF showed higher percentages of total fertilization rate than those obtained by ICSI and PICSI. However, results demonstrate that PICSI fertilization increased the blastocysts formation rate in control DO-GC and vitrified oocytes compared to IVF and ICSI. Conclusions To achieve high blastocyst formation rates from vitrified GV oocytes, it is recommended that sperm should be selected with HA instead of PVP before injection since high viability and acrosome reaction rates were obtained. Also, PICSI fertilization was the best method to produce higher blastocyst rates compared to the IVF and ICSI procedures.
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Affiliation(s)
- Fahiel Casillas
- 1Departamento de Biología de la Reproducción, División de Ciencias Biológicas y de la Salud, Universidad Autónoma Metropolitana-Iztapalapa, 09340 CDMX, Mexico.,2Doctorado en Ciencias Biológicas y de la Salud. Universidad Autónoma Metropolitana-Iztapalapa, 09340 CDMX, Mexico
| | - Miguel Betancourt
- 3Departamento de Ciencias de la Salud, División de Ciencias Biológicas y de la Salud, Universidad Autónoma Metropolitana-Iztapalapa, 09340 CDMX, Mexico
| | - Cristina Cuello
- 4Departamento de Medicina y Cirugía Animal, Universidad de Murcia, 30100 Espinardo, Spain
| | - Yvonne Ducolomb
- 3Departamento de Ciencias de la Salud, División de Ciencias Biológicas y de la Salud, Universidad Autónoma Metropolitana-Iztapalapa, 09340 CDMX, Mexico
| | - Alma López
- 3Departamento de Ciencias de la Salud, División de Ciencias Biológicas y de la Salud, Universidad Autónoma Metropolitana-Iztapalapa, 09340 CDMX, Mexico
| | - Lizbeth Juárez-Rojas
- 1Departamento de Biología de la Reproducción, División de Ciencias Biológicas y de la Salud, Universidad Autónoma Metropolitana-Iztapalapa, 09340 CDMX, Mexico
| | - Socorro Retana-Márquez
- 1Departamento de Biología de la Reproducción, División de Ciencias Biológicas y de la Salud, Universidad Autónoma Metropolitana-Iztapalapa, 09340 CDMX, Mexico
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11
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Lee SH, Oh HJ, Kim MJ, Setyawan EMN, Choi YB, Lee BC. Effect of co-culture human endothelial progenitor cells with porcine oocytes during maturation and subsequent embryo development of parthenotes in vitro. Mol Reprod Dev 2018; 85:336-347. [PMID: 29442425 DOI: 10.1002/mrd.22969] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2017] [Accepted: 02/12/2018] [Indexed: 12/18/2022]
Abstract
Human endothelial progenitor cells (EPCs) have been applied to regenerative medicine for their roles in angiogenesis as well as neovascularization, and these angiogenetic functions have beneficial effects on maturation of ovarian follicles. However, little information is available on whether EPCs on culture systems affect oocyte maturation and subsequent embryo development. Therefore, the objective of this study was to investigate the effect of EPC co-culture on porcine oocytes during in vitro maturation (IVM) and subsequent embryo development, and to examine gene expression in cumulus cells, oocytes and blastocysts. The effect of co-culture using EPC on porcine oocyte IVM was investigated. Oocytes were activated using electrical stimulation and embryo developmental competence was estimated. The expression of the genes related to cumulus expansion, oocyte maturation, embryo development, and apoptosis were analyzed. In result, there was a significantly increased maturation rate in EPC group compared with control (p < 0.05). Also, oocytes co-cultured with EPCs exhibited significantly improved blastocyst formation rates (p < 0.05). The expression of mRNAs associated with cumulus expansion and apoptosis in cumulus cells was significantly up-regulated in EPC group. Also, markedly increased levels of GDF9, BMP15, and BCL2 were observed in oocytes from the EPC group. Blastocysts in the co-culture group showed significantly higher SOX2, OCT4, and NANOG levels. In conclusion, co-culturing porcine oocytes with EPCs improves their maturation by regulating genes involved in cumulus cell expansion, oocyte maturation, and apoptosis. Moreover, EPC co-culture during IVM enhanced embryo development as shown by increased blastocyst formation rate and pluripotency-related gene expression.
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Affiliation(s)
- Seok Hee Lee
- Department of Theriogenology and Biotechnology, College of Veterinary Medicine, Seoul National University, Seoul, Republic of Korea
| | - Hyun Ju Oh
- Department of Theriogenology and Biotechnology, College of Veterinary Medicine, Seoul National University, Seoul, Republic of Korea
| | - Min Jung Kim
- Department of Theriogenology and Biotechnology, College of Veterinary Medicine, Seoul National University, Seoul, Republic of Korea
| | - Erif M N Setyawan
- Department of Theriogenology and Biotechnology, College of Veterinary Medicine, Seoul National University, Seoul, Republic of Korea
| | - Yoo Bin Choi
- Department of Theriogenology and Biotechnology, College of Veterinary Medicine, Seoul National University, Seoul, Republic of Korea
| | - Byeong Chun Lee
- Department of Theriogenology and Biotechnology, College of Veterinary Medicine, Seoul National University, Seoul, Republic of Korea
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12
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α-Solanine impairs oocyte maturation and quality by inducing autophagy and apoptosis and changing histone modifications in a pig model. Reprod Toxicol 2017; 75:96-109. [PMID: 29247839 DOI: 10.1016/j.reprotox.2017.12.005] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2017] [Revised: 08/17/2017] [Accepted: 12/12/2017] [Indexed: 11/22/2022]
Abstract
In this study, we used a pig model to investigate the effects of α-solanine (a natural toxin found mainly in potato sprouts) on oocyte maturation, quality and subsequent embryonic development. We found that α-solanine (10 μM) disturbed meiotic resumption and increased abnormal spindle formation and altered the cortical granule (CG) distribution compared with the untreated group. α-Solanine triggered autophagy and apoptosis by increasing the expressions of autophagy-related genes (LC3, ATG7, and LAMP2) and apoptotic related genes (BAX and CASP3). Exposure of porcine oocytes to α-solanine significantly increased the levels of H3K36me3 and H3K27me3. Moreover, α-solanine significantly reduced the cleavage and blastocyst formation rates, decreased the total and inner cell mass cells numbers, and increased apoptosis in these porcine embryos. Taken together, our data indicate that α-solanine toxically impairs oocyte maturation and quality by triggering autophagy/apoptosis and facilitating epigenetic modifications. Furthermore, α-solanine suppressed subsequent embryonic development and reduced embryo quality.
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13
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Yuan Y, Spate LD, Redel BK, Tian Y, Zhou J, Prather RS, Roberts RM. Quadrupling efficiency in production of genetically modified pigs through improved oocyte maturation. Proc Natl Acad Sci U S A 2017; 114:E5796-E5804. [PMID: 28673989 PMCID: PMC5530680 DOI: 10.1073/pnas.1703998114] [Citation(s) in RCA: 89] [Impact Index Per Article: 12.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Abstract
Assisted reproductive technologies in all mammals are critically dependent on the quality of the oocytes used to produce embryos. For reasons not fully clear, oocytes matured in vitro tend to be much less competent to become fertilized, advance to the blastocyst stage, and give rise to live young than their in vivo-produced counterparts, particularly if they are derived from immature females. Here we show that a chemically defined maturation medium supplemented with three cytokines (FGF2, LIF, and IGF1) in combination, so-called "FLI medium," improves nuclear maturation of oocytes in cumulus-oocyte complexes derived from immature pig ovaries and provides a twofold increase in the efficiency of blastocyst production after in vitro fertilization. Transfer of such blastocysts to recipient females doubles mean litter size to about nine piglets per litter. Maturation of oocytes in FLI medium, therefore, effectively provides a fourfold increase in piglets born per oocyte collected. As they progress in culture, the FLI-matured cumulus-oocyte complexes display distinctly different kinetics of MAPK activation in the cumulus cells, much increased cumulus cell expansion, and an accelerated severance of cytoplasmic projections between the cumulus cells outside the zona pellucida and the oocyte within. These events likely underpin the improvement in oocyte quality achieved by using the FLI medium.
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Affiliation(s)
- Ye Yuan
- Division of Animal Sciences, University of Missouri, Columbia, MO 65211;
- Bond Life Sciences Center, University of Missouri, Columbia, MO 65211
| | - Lee D Spate
- Division of Animal Sciences, University of Missouri, Columbia, MO 65211
| | - Bethany K Redel
- Division of Animal Sciences, University of Missouri, Columbia, MO 65211
| | - Yuchen Tian
- Division of Animal Sciences, University of Missouri, Columbia, MO 65211
- Bond Life Sciences Center, University of Missouri, Columbia, MO 65211
| | - Jie Zhou
- Department of Obstetrics, Gynecology and Women's Health, University of Missouri School of Medicine, Columbia, MO 65212
| | - Randall S Prather
- Division of Animal Sciences, University of Missouri, Columbia, MO 65211
| | - R Michael Roberts
- Division of Animal Sciences, University of Missouri, Columbia, MO 65211;
- Bond Life Sciences Center, University of Missouri, Columbia, MO 65211
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14
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Redel BK, Tessanne KJ, Spate LD, Murphy CN, Prather RS. Arginine increases development of in vitro-produced porcine embryos and affects the protein arginine methyltransferase-dimethylarginine dimethylaminohydrolase-nitric oxide axis. Reprod Fertil Dev 2017; 27:655-66. [PMID: 25765074 DOI: 10.1071/rd14293] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2014] [Accepted: 02/14/2015] [Indexed: 12/15/2022] Open
Abstract
Culture systems promote development at rates lower than the in vivo environment. Here, we evaluated the embryo's transcriptome to determine what the embryo needs during development. A previous mRNA sequencing endeavour found upregulation of solute carrier family 7 (cationic amino acid transporter, y+ system), member 1 (SLC7A1), an arginine transporter, in in vitro- compared with in vivo-cultured embryos. In the present study, we added different concentrations of arginine to our culture medium to meet the needs of the porcine embryo. Increasing arginine from 0.12 to 1.69mM improved the number of embryos that developed to the blastocyst stage. These blastocysts also had more total nuclei compared with controls and, specifically, more trophectoderm nuclei. Embryos cultured in 1.69mM arginine had lower SLC7A1 levels and a higher abundance of messages involved with glycolysis (hexokinase 1, hexokinase 2 and glutamic pyruvate transaminase (alanine aminotransferase) 2) and decreased expression of genes involved with blocking the tricarboxylic acid cycle (pyruvate dehydrogenase kinase, isozyme 1) and the pentose phosphate pathway (transaldolase 1). Expression of the protein arginine methyltransferase (PRMT) genes PRMT1, PRMT3 and PRMT5 throughout development was not affected by arginine. However, the dimethylarginine dimethylaminohydrolase 1 (DDAH1) and DDAH2 message was found to be differentially regulated through development, and the DDAH2 protein was localised to the nuclei of blastocysts. Arginine has a positive effect on preimplantation development and may be affecting the nitric oxide-DDAH-PRMT axis.
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Affiliation(s)
- Bethany K Redel
- Division of Animal Science, Animal Science Research Center, 920 East Campus Drive, Columbia, MO 65211, USA
| | - Kimberly J Tessanne
- Division of Animal Science, Animal Science Research Center, 920 East Campus Drive, Columbia, MO 65211, USA
| | - Lee D Spate
- Division of Animal Science, Animal Science Research Center, 920 East Campus Drive, Columbia, MO 65211, USA
| | - Clifton N Murphy
- Division of Animal Science, Animal Science Research Center, 920 East Campus Drive, Columbia, MO 65211, USA
| | - Randall S Prather
- Division of Animal Science, Animal Science Research Center, 920 East Campus Drive, Columbia, MO 65211, USA
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15
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Rahiminia T, Faramarzi A, Khoradmehr A, Khalili MA. Cumulus co-culture system does not improve the in-vitro maturation (IVM) of oocytes in mice. MIDDLE EAST FERTILITY SOCIETY JOURNAL 2016. [DOI: 10.1016/j.mefs.2015.10.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
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16
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Wright EC, Hale BJ, Yang CX, Njoka JG, Ross JW. MicroRNA-21 and PDCD4 expression during in vitro oocyte maturation in pigs. Reprod Biol Endocrinol 2016; 14:21. [PMID: 27084064 PMCID: PMC4833929 DOI: 10.1186/s12958-016-0152-2] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/28/2015] [Accepted: 04/04/2016] [Indexed: 01/20/2023] Open
Abstract
BACKGROUND MicroRNA (miRNA) are small non-coding RNA molecules critical for regulating cellular function, and are abundant in the maturing oocyte and developing embryo. MiRNA-21 (MIR21) has been shown to elicit posttranscriptional gene regulation in several tissues associated with rapid cell proliferation in addition to demonstrating anti-apoptotic features through interactions with PDCD4 mRNA and other targets. In many tissues, MIR21 interacts and suppresses PDCD4 due to the strong complementation between MIR21 and the PDCD4 3'UTR. METHODS The objective of this project was to examine the relationship between MIR21 and PDCD4 expression in porcine oocytes during in vitro maturation and assess the impact of MIR21 inhibition during oocyte maturation on early embryo development. Additionally, we evaluated the effect of gonadotropins in maturation media and the presence of cumulus cells to determine their ability to contribute to MIR21 abundance in the oocyte during maturation. RESULTS During in vitro maturation, expression of MIR21 increased approximately 6-fold in the oocyte and 25-fold in the cumulus cell. Temporally associated with this was the reduction of PDCD4 protein abundance in MII arrested oocytes compared with GV stage oocytes, although PDCD4 mRNA was not significantly different during this transition. Neither the presence of cumulus cells nor gonadotropins during in vitro maturation affected MIR21 abundance in those oocytes achieving MII arrest. However, inhibition of MIR21 activity during in vitro maturation using antisense MIR21 suppressed embryo development to the 4-8 cell stage following parthenogenetic activation. CONCLUSIONS MIR21 is differentially expressed in the oocyte during meiotic maturation in the pig and inhibition of MIR21 during this process alters PDCD4 protein abundance suggesting posttranscriptional regulatory events involving MIR21 during oocyte maturation may impact subsequent embryonic development in the pig.
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Affiliation(s)
- Elane C. Wright
- Department of Animal Science, Iowa State University, 2356 Kildee hall, Ames, IA 50011 USA
| | - Benjamin J. Hale
- Department of Animal Science, Iowa State University, 2356 Kildee hall, Ames, IA 50011 USA
| | - Cai-Xia Yang
- Department of Animal Science, Iowa State University, 2356 Kildee hall, Ames, IA 50011 USA
| | - Josephat G. Njoka
- Department of Animal Science, Iowa State University, 2356 Kildee hall, Ames, IA 50011 USA
| | - Jason W. Ross
- Department of Animal Science, Iowa State University, 2356 Kildee hall, Ames, IA 50011 USA
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17
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Saadeldin IM, Khoirinaya C, Kim SJ, Moon JH, Almadaly E, Lee BC. Blastocysts derivation from somatic cell fusion with premature oocytes (prematuration somatic cell fusion). Dev Growth Differ 2016; 58:157-66. [PMID: 26857553 DOI: 10.1111/dgd.12264] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2015] [Revised: 01/03/2016] [Accepted: 01/04/2016] [Indexed: 11/28/2022]
Abstract
This study was undertaken to investigate the development of immature oocytes after their fusion with male somatic cells expressing red fluorescence protein (RFP). RFP-expressing cells were fused with immature oocytes, matured in vitro and then parthenogenetically activated. Somatic nuclei showed spindle formation, 1st polar body extrusion after in vitro maturation and protruded the 2nd polar body after parthenogenetic activation. RFP was expressed in the resultant embryos; two-cell stage and blastocysts. Chromosomal analysis showed aneuploidy in 81.82% of the resulting blastocysts while 18.18% of the resulting blastocysts were diploid. Among eight RFP-expressing blastocysts, Xist mRNAs was detected in six while Sry mRNA was detected in only one blastocyst. We propose "prematuration somatic cell fusion" as an approach to generate embryos using somatic cells instead of spermatozoa. The current approach, if improved, would assist production of embryos for couples where the male partner is sterile, however, genetic and chromosomal analysis of the resultant embryos are required before transfer to the mothers.
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Affiliation(s)
- Islam M Saadeldin
- Department of Physiology, Faculty of Veterinary Medicine, Zagazig University, Zagazig, 44519, Egypt
| | - Candrani Khoirinaya
- Department of Theriogenology and Biotechnology, College of Veterinary Medicine and the Research Institute for Veterinary Science, Seoul National University, Seoul, 151-742, Korea
| | - Su Jin Kim
- Department of Theriogenology and Biotechnology, College of Veterinary Medicine and the Research Institute for Veterinary Science, Seoul National University, Seoul, 151-742, Korea
| | - Joon Ho Moon
- Department of Theriogenology and Biotechnology, College of Veterinary Medicine and the Research Institute for Veterinary Science, Seoul National University, Seoul, 151-742, Korea
| | - Essam Almadaly
- Department of Theriogenology, Faculty of Veterinary Medicine, Kafrelsheikh University, Kafrelsheikh, 33516, Egypt
| | - Byeong Chun Lee
- Department of Theriogenology and Biotechnology, College of Veterinary Medicine and the Research Institute for Veterinary Science, Seoul National University, Seoul, 151-742, Korea.,Designed Animal and Transplantation, Institute of Green Bio Science Technology, Seoul National University, Seoul, 232-916, Pyeongchang, Korea
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18
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Redel BK, Spate LD, Lee K, Mao J, Whitworth KM, Prather RS. Glycine supplementation in vitro enhances porcine preimplantation embryo cell number and decreases apoptosis but does not lead to live births. Mol Reprod Dev 2016; 83:246-58. [PMID: 26824641 PMCID: PMC5067679 DOI: 10.1002/mrd.22618] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2015] [Accepted: 01/17/2016] [Indexed: 01/09/2023]
Abstract
Most in vitro culture conditions are less‐than‐optimal for embryo development. Here, we used a transcriptional‐profiling database to identify culture‐induced differences in gene expression in porcine blastocysts compared to in vivo‐produced counterparts. Genes involved in glycine transport (SLC6A9), glycine metabolism (GLDC, GCSH, DLD, and AMT), and serine metabolism (PSAT1, PSPH, and PHGDH) were differentially expressed. Addition of 10 mM glycine to the culture medium (currently containing 0.1 mM) reduced the abundance of SLC6A9 transcript and increased total cell number, primarily in the trophectoderm lineage (P = 0.003); this was likely by decreasing the percentage of apoptotic nuclei. As serine and glycine can be reversibly metabolized by serine hydroxymethyltransferase 2 (SHMT2), we assessed the abundance of SHMT2 transcript as well as its functional role by inhibiting it with aminomethylphosphonic acid (AMPA), a glycine analog, during in vitro culture. Both AMPA supplementation and elevated glycine decreased the mRNA abundance of SHMT2 and tumor protein p53 (TP53), which is activated in response to cellular stress, compared to controls (P ≤ 0.02). On the other hand, mitochondrial activity of blastocysts, mtDNA copy number, and abundance of mitochondria‐related transcripts did not differ between control and 10 mM glycine culture conditions. Despite improvements to these metrics of blastocyst quality, transfer of embryos cultured in 10 mM glycine did not result in pregnancy whereas the transfer of in vitro‐produced embryos cultured in control medium yielded live births. Mol. Reprod. Dev. 83: 246–258, 2016. © 2016 The Authors.
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Affiliation(s)
- Bethany K Redel
- Division of Animal Sciences, Animal Science Research Center, Columbia, Missouri
| | - Lee D Spate
- Division of Animal Sciences, Animal Science Research Center, Columbia, Missouri
| | - Kiho Lee
- Division of Animal Sciences, Animal Science Research Center, Columbia, Missouri
| | - Jiude Mao
- Division of Animal Sciences, Animal Science Research Center, Columbia, Missouri
| | - Kristin M Whitworth
- Division of Animal Sciences, Animal Science Research Center, Columbia, Missouri
| | - Randall S Prather
- Division of Animal Sciences, Animal Science Research Center, Columbia, Missouri
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19
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Lin T, Oqani RK, Lee JE, Shin HY, Jin DI. Coculture with good-quality COCs enhances the maturation and development rates of poor-quality COCs. Theriogenology 2016; 85:396-407. [DOI: 10.1016/j.theriogenology.2015.09.001] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2015] [Revised: 09/02/2015] [Accepted: 09/02/2015] [Indexed: 11/27/2022]
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20
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Huan Y, Xie B, Liu S, Kong Q, Liu Z. A novel role for DNA methyltransferase 1 in regulating oocyte cytoplasmic maturation in pigs. PLoS One 2015; 10:e0127512. [PMID: 26009894 PMCID: PMC4444208 DOI: 10.1371/journal.pone.0127512] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2015] [Accepted: 04/16/2015] [Indexed: 01/04/2023] Open
Abstract
Maternal factors are required for oocyte maturation and embryo development. To better understand the role of DNA methyltransferase 1 (Dnmt1) in oocyte maturation and embryo development, small interfering RNA (siRNA) was conducted in porcine oocytes. In this study, our results showed that Dnmt1 localized in oocyte cytoplasm and its expression displayed no obvious change during oocyte maturation. When siRNAs targeting Dnmt1 were injected into germinal vesicle (GV) stage oocytes, Dnmt1 transcripts significantly decreased in matured oocytes (P<0.05). After Dnmt1 knockdown in GV stage oocytes, the significant reduction of glutathione content, mitochondrial DNA copy number, glucose-6-phosphate dehydrogenase activity and expression profiles of maternal factors and the severely disrupted distribution of cortical granules were observed in MII stage oocytes (P<0.05), leading to the impaired oocyte cytoplasm. Further study displayed that Dnmt1 knockdown in GV stage oocytes significantly reduced the development of early embryos generated through parthenogenetic activation, in vitro fertilization and somatic cell nuclear transfer (P<0.05). In conclusion, Dnmt1 was indispensable for oocyte cytoplasmic maturation, providing a novel role for Dnmt1 in the regulation of oocyte maturation.
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Affiliation(s)
- Yanjun Huan
- College of Life Science, Northeast Agricultural University, Harbin, Heilongjiang Province, China
- Dairy Cattle Research Center, Shandong Academy of Agricultural Sciences, Jinan, Shandong Province, China
| | - Bingteng Xie
- College of Life Science, Northeast Agricultural University, Harbin, Heilongjiang Province, China
| | - Shichao Liu
- College of Life Science, Northeast Agricultural University, Harbin, Heilongjiang Province, China
| | - Qingran Kong
- College of Life Science, Northeast Agricultural University, Harbin, Heilongjiang Province, China
| | - Zhonghua Liu
- College of Life Science, Northeast Agricultural University, Harbin, Heilongjiang Province, China
- * E-mail:
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21
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Spate LD, Brown A, Redel BK, Whitworth KM, Prather RS. PS48 can replace bovine serum albumin in pig embryo culture medium, and improve in vitro embryo development by phosphorylating AKT. Mol Reprod Dev 2015; 82:315-20. [PMID: 25776657 DOI: 10.1002/mrd.22474] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2015] [Accepted: 02/20/2015] [Indexed: 01/22/2023]
Abstract
The application of embryo-related technology is dependent on in vitro culture systems. Unfortunately, most culture media are suboptimal and result in developmentally compromised embryos. Since embryo development is partially dependent upon Warburg Effect-like metabolism, our goal was to test the response of embryos treated with compounds that are known to stimulate or enhance this Effect. One such compound is 5-(4-chloro-phenyl)-3-phenyl-pent-2-enoic acid (PS48). When added during oocyte maturation, the quality of the resultant embryos was compromised, whereas when added to the culture medium after fertilization, PS48 improved both the percentage of embryos that reach the blastocyst stage and the number of nuclei in those blastocysts. Embryonic PS48 treatment resulted in more phosphorylated v-akt murine thymoma viral oncogene homolog (AKT) in blastocyst-stage embryos as compared to the controls. Further, PS48 could replace bovine serum albumin in embryo culture medium, as demonstrated by high-quality embryos that were developmentally competent. The action of PS48 appears to be via stimulation of phosphoinositide-3 kinase and phosphorylation of AKT, which is consistent with stimulation of the Warburg Effect.
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Affiliation(s)
- Lee D Spate
- Division of Animal Science, University of Missouri, Columbia, Missouri
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22
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Yoon JD, Jeon Y, Cai L, Hwang SU, Kim E, Lee E, Kim D, Hyun SH. Effects of coculture with cumulus-derived somatic cells on in vitro maturation of porcine oocytes. Theriogenology 2015; 83:294-305. [DOI: 10.1016/j.theriogenology.2014.09.025] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2013] [Revised: 09/15/2014] [Accepted: 09/20/2014] [Indexed: 11/24/2022]
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23
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Procedure used for denuding pig oocytes influences oocyte damage, and development of in vitro and nuclear transfer embryos. Anim Reprod Sci 2014; 152:65-76. [PMID: 25487568 DOI: 10.1016/j.anireprosci.2014.11.009] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2014] [Revised: 11/10/2014] [Accepted: 11/11/2014] [Indexed: 11/20/2022]
Abstract
The effects of different denuding procedures used during the in vitro culture of porcine embryos on oocyte damage and aspects of porcine embryo development were investigated in a series of studies. Oocytes were denuded by vortexing or pipetting after 44h in vitro maturation (IVM) or pre-denuded after 22h IVM. The total oocyte death rate was significantly (P<0.05) higher for pre-denuded (27.3±1.4%) than for vortexed (20.3±1.2%) or pipetted (16.2±2.2%) oocytes. There was no significant difference between the treatments in the percentage of oocytes that extruded the first polar body. The type I cortical granule distribution (reflecting complete maturity) and normal spindle formation rates were significantly lower in the pre-denuding than in the vortexing and pipetting treatments. Blastocyst formation rates were significantly lower for the pre-denuding treatment in PA (25.7±4.5%) and IVF (6.1±1.5%) culture than in the vortexing (PA 42.0±4.5%; IVF 11.2±0.5%) and pipetting (PA 43.4±3.1%; IVF 9.4±1.6%) treatments. The proportion of oocytes developing to blastocysts in SCNT culture was not significantly different between treatments ranging from 9.9±1.8% for pre-denuding to 12.3±2.7% for vortexing. No significant differences in apoptosis or embryonic fragmentation were observed. This study shows that the denuding procedure used for porcine oocytes during the in vitro production of embryos can significantly affect oocyte damage, spindle patterns, oocyte maturation, embryo development but not embryonic apoptosis or the frequency of fragmentation.
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Gao F, Guan J, Liu L, Zhang S, An P, Fan A, Song G, Zhang P, Zhao T, Tang B, Zhang X, Li Z. Effects of WT1 down-regulation on oocyte maturation and preimplantation embryo development in pigs. Reproduction 2014; 148:377-87. [DOI: 10.1530/rep-14-0204] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
The Wilms' tumour 1 (WT1) gene originally identified as a tumour suppressor associated with WTs encodes a zinc finger-containing transcription factor that is expressed in multiple tissues and is an important regulator of cellular and organ growth, proliferation, development, migration and survival. However, there is a deficiency of data regarding the expression and function ofWT1during oocyte maturation and preimplantation embryonic development. Herein, we sought to define the expression characteristics and functions ofWT1during oocyte maturation and preimplantation embryonic development in pigs. We show thatWT1is expressed in porcine oocytes and at all preimplantation stages in embryos generated by ICSI. We then evaluated the effects of down-regulatingWT1expression at germinal vesicle and early ICSI stages using a recombinant plasmid (pGLV3-WT1-shRNA). Down-regulation ofWT1did not affect oocyte maturation but significantly decreased preimplantation embryonic development and increased apoptosis in blastocysts. These results indicate thatWT1plays important roles in the development of porcine preimplantation embryos.
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25
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Co-culture with granulosa cells improve the in vitro maturation ability of porcine immature oocytes vitrified with cryolock. Cryobiology 2014; 69:299-304. [DOI: 10.1016/j.cryobiol.2014.08.004] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2014] [Revised: 06/23/2014] [Accepted: 08/13/2014] [Indexed: 11/20/2022]
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26
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Wang XL, Wang K, Zhao S, Wu Y, Gao H, Zeng SM. Oocyte-secreted growth differentiation factor 9 inhibits BCL-2-interacting mediator of cell death-extra long expression in porcine cumulus cell. Biol Reprod 2013; 89:56. [PMID: 23843241 DOI: 10.1095/biolreprod.113.108365] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022] Open
Abstract
Oocyte-secreted factors (OSFs) maintain the low incidence of cumulus cell apoptosis. In this report, we described that the presence of oocytes suppressed the expression of proapoptotic protein BCL-2-interacting mediator of cell death-extra long (BIMEL) in porcine cumulus cells. Atretic (terminal deoxynucleotidyl transferase dUTP nick end labeling-positive) cumulus cells strongly expressed BIMEL protein. The healthy cumulus- oocyte complex exhibited a low BIMEL expression in cumulus cell while the removal of oocyte led to an about 2.5-fold (P < 0.5) increased expression in oocytectomized complex (OOX). Coculturing OOXs with denuded oocytes decreased BIMEL expression to the normal level. The similar expression pattern could also be achieved in OOXs treated with exogenous recombinant mouse growth differentiation factor 9 (GDF9), a well-characterized OSF. This inhibitory action of GDF9 was prevented by the addition of a phosphatidylinositol 3-kinase (PI3K) inhibitor LY294002. Luciferase assay further demonstrated that BIM gene expression was forkhead box O3a (FOXO3a)-dependent because mutation of FOXO3a-binding site on the BIM promoter inhibited luciferase activities. Moreover, the activity of BIM promoter encompassing the FOXO3a-binding site could be regulated by GDF9. Additionally, we found that GDF9 elevated the levels of phosphorylated AKT and FOXO3a, and this process was independent of the SMAD signal pathway. Taken together, we concluded that OSFs, particularly GDF9, maintained the low level of BIMEL expression in cumulus cell through activation of the PI3K/FOXO3a pathway.
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Affiliation(s)
- Xian-Long Wang
- Laboratory of Animal Embryonic Biotechnology, College of Animal Science and Technology, China Agricultural University, Beijing, China
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Alvarez GM, Dalvit GC, Cetica PD. Influence of the Cumulus and Gonadotropins on the Metabolic Profile of Porcine Cumulus-Oocyte Complexes During In Vitro Maturation. Reprod Domest Anim 2012; 47:856-64. [DOI: 10.1111/j.1439-0531.2011.01943.x] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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Redel BK, Brown AN, Spate LD, Whitworth KM, Green JA, Prather RS. Glycolysis in preimplantation development is partially controlled by the Warburg Effect. Mol Reprod Dev 2011; 79:262-71. [PMID: 22213464 DOI: 10.1002/mrd.22017] [Citation(s) in RCA: 74] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2011] [Accepted: 12/09/2011] [Indexed: 01/06/2023]
Abstract
Glucose metabolism in preimplantation embryos has traditionally been viewed from a somatic cell viewpoint. Here, we show that gene expression in early embryos is similar to rapidly dividing cancer cells. In vitro-produced pig blastocysts were subjected to deep-sequencing, and were found to express two gene variants that have been ascribed importance to cancer cell metabolism (HK2 and the M2 variant of PKM2). Development was monitored and gene expression was quantified in additional embryos cultured in low or high O(2) (5% CO(2), 5% O(2), 90% N(2) vs. 5% CO(2) in air). Development to the blastocyst stage in the two atmospheres was similar, except low O(2) resulted in more total and inner cell mass nuclei than high O(2). Of the 15 candidate genes selected that are involved in glucose metabolism, only TALDO1 and PDK1 were increased in the low O(2) environment. One paradigm that has been used to explain glycolysis under low oxygen tension is the Warburg Effect (WE). The WE predicts that expression of both HK2 and PKM2 M2 results in a slowing of glucose metabolism through the TCA cycle, thereby forcing the products of glycolysis to be metabolized through the pentose phosphate pathway and to lactic acid. This charging of the system is apparently so important to the early embryo that redundant mechanisms are present, that is, a fetal form of PKM2 and high levels of PDK1. Here, we set the framework for using the WE to describe glucose metabolism and energy production during preimplantation development.
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Affiliation(s)
- Bethany K Redel
- Division of Animal Science, University of Missouri, Columbia, Missouri 65211, USA
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VIET LINH N, KIKUCHI K, NAKAI M, NOGUCHI J, KANEKO H, DANG-NGUYEN TQ, MAEDOMARI N, NGUYEN BX, NAGAI T, MANABE N. Improvement of Porcine Oocytes with Low Developmental Ability after Fusion of Cytoplasmic Fragments Prepared by Serial Centrifugation. J Reprod Dev 2011; 57:620-6. [DOI: 10.1262/jrd.11-053h] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Affiliation(s)
- Nguyen VIET LINH
- Animal Resource Science Center, Graduate School of Agricultural and Life Sciences, The University of Tokyo, Ibaraki 319-0206, Japan
- Division of Animal Sciences, National Institute of Agrobiological Sciences, Ibaraki 305-8602, Japan
- Institute of Biotechnology, Vietnamese Academy of Science and Technology, Hanoi, Vietnam
| | - Kazuhiro KIKUCHI
- Division of Animal Sciences, National Institute of Agrobiological Sciences, Ibaraki 305-8602, Japan
| | - Michiko NAKAI
- Division of Animal Sciences, National Institute of Agrobiological Sciences, Ibaraki 305-8602, Japan
| | - Junko NOGUCHI
- Division of Animal Sciences, National Institute of Agrobiological Sciences, Ibaraki 305-8602, Japan
| | - Hiroyuki KANEKO
- Division of Animal Sciences, National Institute of Agrobiological Sciences, Ibaraki 305-8602, Japan
| | - Thanh Quang DANG-NGUYEN
- Institute of Biotechnology, Vietnamese Academy of Science and Technology, Hanoi, Vietnam
- Graduate School of Life and Environmental Science, University of Tsukuba, Ibaraki 305-8572, Japan
- National Institute of Livestock and Grassland Science, National Agriculture and Food Research Organization, Ibaraki 305-0901, Japan
| | - Naoki MAEDOMARI
- Graduate School of Veterinary Medicine, Azabu University, Kanagawa 252-5201, Japan
| | - Bui Xuan NGUYEN
- Institute of Biotechnology, Vietnamese Academy of Science and Technology, Hanoi, Vietnam
| | - Takashi NAGAI
- National Institute of Livestock and Grassland Science, National Agriculture and Food Research Organization, Ibaraki 305-0901, Japan
| | - Noboru MANABE
- Animal Resource Science Center, Graduate School of Agricultural and Life Sciences, The University of Tokyo, Ibaraki 319-0206, Japan
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