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Costa CB, Fair T, Seneda MM. Review: Environment of the ovulatory follicle: modifications and use of biotechnologies to enhance oocyte competence and increase fertility in cattle. Animal 2023; 17 Suppl 1:100866. [PMID: 37567670 DOI: 10.1016/j.animal.2023.100866] [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: 11/23/2022] [Revised: 05/15/2023] [Accepted: 05/16/2023] [Indexed: 08/13/2023] Open
Abstract
The oocyte is the basis of life, supporting development from a fertilized cell to an independent multicellular organism. The oocyte's competence to drive the first cell cycles postfertilization are critical to embryonic survival and subsequent successful pregnancy. Coupled with the complex processes of follicle assembly, activation, differentiation, growth, and terminal maturation, oocyte developmental competence is gradually acquired during oocyte growth and meiotic maturation. Most reproduction management technologies and interventions are centered around these highly coordinated processes, targeting the ovarian follicle and the oocyte within. Thus, our objective was to highlight key aspects of oocyte and follicle development in cattle, and to discuss recent advances in oocyte and follicle-centered reproductive biotechnologies.
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Affiliation(s)
- Camila Bortoliero Costa
- Department of Biological Sciences, School of Sciences and Languages, São Paulo State University (UNESP), Campus Assis, São Paulo, Brazil; Graduate Program in Pharmacology and Biotechnology, Institute of Biosciences, UNESP, Botucatu, São Paulo, Brazil
| | - Trudee Fair
- School of Agriculture and Food Science, University College Dublin, Ireland
| | - Marcelo M Seneda
- State University of Londrina (UEL), Laboratory of Animal Reproduction, Londrina, PR, Brazil.
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2
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Leonurine improves bovine oocyte maturation and subsequent embryonic development by reducing oxidative stress and improving mitochondrial function. Theriogenology 2023; 199:11-18. [PMID: 36680865 DOI: 10.1016/j.theriogenology.2023.01.010] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2022] [Revised: 12/30/2022] [Accepted: 01/11/2023] [Indexed: 01/15/2023]
Abstract
It is acknowledged that excessive reactive oxygen species (ROS) level attributes greatly to the compromised developmental potential of oocytes matured in vitro. Although agents were applied to alleviate ROS levels, results were varied because of the distinct antioxidative activity and cell toxicity. Leonurine (LEO), extracted from the natural Chinese herb motherwort, is considered to be a potent free radical scavenger. Yet, it is undetermined whether LEO is benefit for oocyte development during in vitro maturation (IVM). In the present study, the effect of LEO on the quality of bovine oocyte as well as the underlying mechanism was investigated. We found that maturation rate (P < 0.01), subsequent blastocyst formation rate (P < 0.05), and the total blastocyst cell number (P < 0.05) after parthenogenetic activation were significantly increased in the group treated with 20 μM LEO. Moreover, a dramatic decline in ROS (P < 0.01), decreased lipid content (P < 0.01), elevated MMP level (P < 0.05), increased ATP content (P < 0.05), and reduced mitochondrial temperature (P < 0.01) were observed in oocytes treated with LEO. Furthermore, the expression level of anti-apoptotic protein BCL2 was significantly higher in LEO treated oocytes (P < 0.01), and the ratio of BAX/BCL2 was obvious decreased (P < 0.01). Finally, we found that LC3B intensity was significantly reduced (P < 0.05) while the rate of EdU positive nuclei was markedly increased (P < 0.05) in embryos derived from LEO-treated oocytes. Our results demonstrate that LEO exhibits a potent protective role in the acquisition of oocyte development capacity against oxidative stress during IVM, and provides a new solution for optimizing the in vitro culture system of bovine embryos.
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Hara S, Inoue Y, Aoki S, Tanaka K, Shirasuna K, Iwata H. Beneficial Effect of Polysaccharide Gel Made of Xanthan Gum and Locust Bean Gum on Bovine Oocytes. Int J Mol Sci 2023; 24:ijms24043508. [PMID: 36834915 PMCID: PMC9963600 DOI: 10.3390/ijms24043508] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2022] [Revised: 02/06/2023] [Accepted: 02/08/2023] [Indexed: 02/12/2023] Open
Abstract
The present study examined the effect of polysaccharides gels made of xanthan gum and locust bean gum (gel culture system) on oocyte maturation and explored the molecules causing the beneficial effect of the gel culture system. Oocytes and cumulus cells complexes were collected from slaughterhouse-derived ovaries and cultured on a plastic plate or gel. The gel culture system improved the rate of development to the blastocyst stage. The oocytes that matured on the gel contained high lipid contents and F-actin formation, and the resultant 8-cell stage embryos had low DNA methylation levels compared to their plate counterparts. RNA sequencing of the oocytes and embryos revealed the differentially expressed genes between the gel and plate culture systems, and upstream regulator analysis revealed estradiol and TGFB1 as top activated upstream molecules. The medium of the gel culture system contained higher concentrations of estradiol and TGFB1 than that of the plate cultures system. Supplementation of the maturation medium with either estradiol or TGFB1 resulted in high lipid content in oocytes. In addition, TGFB1 improved the developmental ability of the oocytes and increased F-actin content while reducing DNA methylation levels in the 8-cell stage embryos. In conclusion, the gel culture system is useful for embryo production, potentially through the upregulation of TGFB1.
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Luciano AM, Franciosi F, Dey P, Ladron De Guevara M, Monferini N, Bonumallu SKN, Musmeci G, Fagali Franchi F, Garcia Barros R, Colombo M, Lodde V. Progress toward species-tailored prematuration approaches in carnivores. Theriogenology 2023; 196:202-213. [PMID: 36423514 DOI: 10.1016/j.theriogenology.2022.11.016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2022] [Revised: 11/05/2022] [Accepted: 11/09/2022] [Indexed: 11/13/2022]
Abstract
In the past four decades, the bovine model has been highly informative and inspiring to assisted reproductive technologies (ART) in other species. Most of the recent advances in ART have come from studies in cattle, particularly those unveiling the importance of several processes that must be recapitulated in vitro to ensure the proper development of the oocyte. The maintenance of structural and functional communications between the cumulus cells and the oocyte and a well-orchestrated chromatin remodeling with the gradual silencing of transcriptional activity represent essential processes for the progressive acquisition of oocyte developmental competence. These markers are now considered the milestones of physiological approaches to increase the efficiency of reproductive technologies. Different in vitro approaches have been proposed. In particular, the so-called "pre-IVM" or "prematuration" is a culture step performed before in vitro maturation (IVM) to support the completion of the oocyte differentiation process. Although these attempts only partially improved the embryo quality and yield, they currently represent a proof of principle that oocytes retrieved from an ovary or an ovarian batch shouldn't be treated as a whole and that tailored approaches can be developed for culturing competent oocytes in several species, including humans. An advancement in ART's efficiency would be desirable in carnivores, where the success is still limited. Since the progress in reproductive medicine has often come from comparative studies, this review highlights aspects that have been critical in other species and how they may be extended to carnivores.
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Affiliation(s)
- Alberto Maria Luciano
- Reproductive and Developmental Biology Laboratory, Department of Veterinary Medicine and Animal Sciences, University of Milan, 26900, Lodi, Italy.
| | - Federica Franciosi
- Reproductive and Developmental Biology Laboratory, Department of Veterinary Medicine and Animal Sciences, University of Milan, 26900, Lodi, Italy
| | - Pritha Dey
- Reproductive and Developmental Biology Laboratory, Department of Veterinary Medicine and Animal Sciences, University of Milan, 26900, Lodi, Italy
| | - Magdalena Ladron De Guevara
- Reproductive and Developmental Biology Laboratory, Department of Veterinary Medicine and Animal Sciences, University of Milan, 26900, Lodi, Italy
| | - Noemi Monferini
- Reproductive and Developmental Biology Laboratory, Department of Veterinary Medicine and Animal Sciences, University of Milan, 26900, Lodi, Italy
| | - Sai Kamal Nag Bonumallu
- Reproductive and Developmental Biology Laboratory, Department of Veterinary Medicine and Animal Sciences, University of Milan, 26900, Lodi, Italy
| | - Giulia Musmeci
- Reproductive and Developmental Biology Laboratory, Department of Veterinary Medicine and Animal Sciences, University of Milan, 26900, Lodi, Italy
| | - Fernanda Fagali Franchi
- Reproductive and Developmental Biology Laboratory, Department of Veterinary Medicine and Animal Sciences, University of Milan, 26900, Lodi, Italy
| | - Rodrigo Garcia Barros
- Reproductive and Developmental Biology Laboratory, Department of Veterinary Medicine and Animal Sciences, University of Milan, 26900, Lodi, Italy
| | - Martina Colombo
- Reproductive and Developmental Biology Laboratory, Department of Veterinary Medicine and Animal Sciences, University of Milan, 26900, Lodi, Italy
| | - Valentina Lodde
- Reproductive and Developmental Biology Laboratory, Department of Veterinary Medicine and Animal Sciences, University of Milan, 26900, Lodi, Italy
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Martínez‐Moro Á, González‐Brusi L, Lamas‐Toranzo I, O'Callaghan E, Esteve‐Codina A, Lonergan P, Bermejo‐Álvarez P. RNA-sequencing reveals genes linked with oocyte developmental potential in bovine cumulus cells. Mol Reprod Dev 2022; 89:399-412. [PMID: 35802551 PMCID: PMC9796886 DOI: 10.1002/mrd.23631] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2021] [Revised: 03/27/2022] [Accepted: 06/27/2022] [Indexed: 01/07/2023]
Abstract
Cumulus cells provide an interesting biological material to perform analyses to understand the molecular clues determining oocyte competence. The objective of this study was to analyze the transcriptional differences between cumulus cells from oocytes exhibiting different developmental potentials following individual in vitro embryo production by RNA-seq. Cumulus cells were allocated into three groups according to the developmental potential of the oocyte following fertilization: (1) oocytes developing to blastocysts (Bl+), (2) oocytes cleaving but arresting development before the blastocyst stage (Bl-), and (3) oocytes not cleaving (Cl-). RNAseq was performed on 4 (Cl-) or 5 samples (Bl+ and Bl-) of cumulus cells pooled from 10 cumulus-oocyte complexes per group. A total of 49, 50, and 18 differentially expressed genes (DEGs) were detected in the comparisons Bl+ versus Bl-, Bl+ versus Cl- and Bl- versus Cl-, respectively, showing a fold change greater than 1.5 at an adjusted p value <0.05. Focussing on DEGs in cumulus cells from Bl+ group, 10 DEGs were common to both comparisons (10/49 from Bl+ vs. Bl-, 10/50 from Bl+ vs. Cl-). These DEGs correspond to 6 upregulated genes (HBE1, ITGA1, PAPPA, AKAP12, ITGA5, and SLC1A4), and 4 downregulated genes (GSTA1, PSMB8, FMOD, and SFRP4) in Bl+ compared to the other groups, from which 7 were validated by quantitative PCR (HBE1, ITGA1, PAPPA, AKAP12, ITGA5, PSMB8 and SFRP4). These genes are involved in critical biological functions such as integrin-mediated cell adhesion, oxygen availability, IGF and Wnt signaling or PKA pathway, highlighting specific biological processes altered in incompetent in vitro maturation oocytes.
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Affiliation(s)
- Álvaro Martínez‐Moro
- Department of Animal Reproduction, INIACSICMadridSpain,EmbryologyIVF SpainMadridSpain
| | | | | | - Elena O'Callaghan
- Agriculture and Food Science, School of Agriculture and Food ScienceUniversity College DublinDublinIreland
| | - Anna Esteve‐Codina
- Functional Genomics, CNAG‐CRG, Centre for Genomic RegulationBarcelona Institute of Science and TechnologyBarcelonaSpain
| | - Pat Lonergan
- Agriculture and Food Science, School of Agriculture and Food ScienceUniversity College DublinDublinIreland
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Read CC, Edwards JL, Schrick FN, Rhinehart JD, Payton RR, Campagna SR, Castro HF, Klabnik JL, Moorey SE. Preovulatory serum estradiol concentration is positively associated with oocyte ATP and follicular fluid metabolite abundance in lactating beef cattle. J Anim Sci 2022; 100:6620784. [PMID: 35772749 PMCID: PMC9246671 DOI: 10.1093/jas/skac136] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2022] [Accepted: 04/08/2022] [Indexed: 12/13/2022] Open
Abstract
Cattle induced to ovulate a small, physiologically immature preovulatory follicle had reduced oocyte developmental competence that resulted in decreased embryo cleavage and day 7 embryo quality compared with animals induced to ovulate a more advanced follicle. RNA-sequencing was performed on oocytes and their corresponding cumulus cells approximately 23 h after gonadotropin-releasing hormone (GnRH) administration to induce the preovulatory gonadotropin surge suggested reduced capacity for glucose metabolism and oxidative phosphorylation in the cumulus cells and oocytes from follicles ≤11.7 mm, respectively. We hypothesized that induced ovulation of a small, physiologically immature preovulatory follicle results in a suboptimal follicular microenvironment and reduced oocyte metabolic capacity. We performed a study with the objective to determine the impact of preovulatory follicle diameter and serum estradiol concentration at GnRH administration on oocyte metabolic competence and follicular fluid metabolome profiles. We synchronized the development of a preovulatory follicle and collected the follicle contents via transvaginal aspiration approximately 19 h after GnRH administration in lactating beef cows (n = 319). We determined ATP levels and mitochondrial DNA (mtDNA) copy number in 110 oocytes and performed ultra-high-performance liquid chromatography–high resolution mass spectrometry metabolomic studies on 45 follicular fluid samples. Intraoocyte ATP and the amount of ATP produced per mtDNA copy number were associated with serum estradiol concentration at GnRH and time from GnRH administration to follicle aspiration (P < 0.05). mtDNA copy number was not related to follicle diameter at GnRH, serum estradiol concentration at GnRH, or any potential covariates (P > 0.10). We detected 90 metabolites in the aspirated follicular fluid. We identified 22 metabolites associated with serum estradiol concentration at GnRH and 63 metabolites associated with follicular fluid progesterone concentration at the time of follicle aspiration (FDR < 0.10). Pathway enrichment analysis of significant metabolites suggested altered proteinogenesis, citric acid cycle, and pyrimidine metabolism in follicles of reduced estrogenic capacity pre-gonadotropin surge or reduced progesterone production by the time of follicle aspiration.
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Affiliation(s)
- Casey C Read
- Department of Animal Science, University of Tennessee, Knoxville, TN 37996, USA
| | - J Lannett Edwards
- Department of Animal Science, University of Tennessee, Knoxville, TN 37996, USA
| | - F Neal Schrick
- Department of Animal Science, University of Tennessee, Knoxville, TN 37996, USA
| | - Justin D Rhinehart
- Department of Animal Science, University of Tennessee, Knoxville, TN 37996, USA
| | - Rebecca R Payton
- Department of Animal Science, University of Tennessee, Knoxville, TN 37996, USA
| | - Shawn R Campagna
- Department of Chemistry, University of Tennessee, Knoxville, TN 37996, USA
| | - Hector F Castro
- Department of Chemistry, University of Tennessee, Knoxville, TN 37996, USA
| | - Jessica L Klabnik
- Department of Animal Science, University of Tennessee, Knoxville, TN 37996, USA
| | - Sarah E Moorey
- Department of Animal Science, University of Tennessee, Knoxville, TN 37996, USA
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7
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Moorey SE, Hessock EA, Edwards JL. Preovulatory follicle contributions to oocyte competence in cattle: importance of the ever-evolving intrafollicular environment leading up to the luteinizing hormone surge. J Anim Sci 2022; 100:6620792. [PMID: 35772757 DOI: 10.1093/jas/skac153] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2022] [Accepted: 04/25/2022] [Indexed: 12/13/2022] Open
Abstract
The preovulatory intrafollicular environment plays a major role in determining oocyte competence. The basis of this review is to highlight the importance of the preovulatory follicle's physiological status prior to the preovulatory luteinizing hormone (LH) surge and onset of oocyte maturation to promote an optimal follicular microenvironment and optimal oocyte developmental competence in cattle. While the underlying mechanisms remain unclear, and are likely multifactorial, the preovulatory follicle's physiological status prior to the preovulatory LH surge is highly influential on the oocyte's capacity to undergo postfertilization embryo development. Changes in the intrafollicular environment of the preovulatory follicle including steroid hormone production, metabolome profiles, and proteome profiles likely support the oocyte's developmental and metabolic competency. This review focuses on the relationship between bovine oocyte developmental competency and antral follicle progression to the preovulatory phase, the role of the preovulatory follicle in improving oocyte developmental competence in cattle, and the importance of the ever-evolving preovulatory intrafollicular environment for optimal fertility.
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Affiliation(s)
- Sarah E Moorey
- Department of Animal Science, University of Tennessee, Knoxville, TN 37996, USA
| | - Emma A Hessock
- Department of Animal Science, University of Tennessee, Knoxville, TN 37996, USA
| | - J Lannett Edwards
- Department of Animal Science, University of Tennessee, Knoxville, TN 37996, USA
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8
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Aardema H, Bertijn I, van Tol HTA, Rijneveld A, Vernooij JCM, Gadella BM, Vos PLAM. Fatty Acid Supplementation During in vitro Embryo Production Determines Cryosurvival Characteristics of Bovine Blastocysts. Front Cell Dev Biol 2022; 10:837405. [PMID: 35356284 PMCID: PMC8959877 DOI: 10.3389/fcell.2022.837405] [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] [Received: 12/16/2021] [Accepted: 01/31/2022] [Indexed: 11/13/2022] Open
Abstract
In vitro production (IVP) embryos have a reduced quality and poor cryotolerance in comparison to in vivo embryos. This study investigated whether free fatty acid (FFA) conditions, fatty acid free (FAF)- synthetic oviduct fluid (SOF) without or with 25 μM of saturated stearic (C18:0) or unsaturated oleic (C18:1) acid during the first 5 IVP days, relate to quality and cryosurvival of day 8 blastocysts. Apart from the blastocyst scores, both 1) number and size of lipid droplets of fresh blastocysts and 2) total number and apoptotic and necrotic cells, before and after freezing-thawing, were scored by confocal microscopy. Blastocyst rates were significantly lower in the FAF SOF condition in comparison to other groups. Interestingly, blastocysts originating from the C18:1 group, with a significantly higher lipid content, and blastocysts from the FAF SOF group demonstrated a high cryosurvival rate (70.1 and 67.4%, respectively) comparable with in vivo blastocysts (68%), in contrast to the poor cryosurvival of C18:0 exposed embryos (17.6%). In all freeze-thawed embryos the average amount of apoptotic and necrotic cells increased albeit that the C18:0 condition rates were higher (43.2%) when compared to C18:1 (26.0%) and FAF SOF conditions (26.5%). The current data show that FFA administered during early embryonic development significantly affect the cryotolerance of blastocysts.
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Affiliation(s)
- H. Aardema
- *Correspondence: H. Aardema, ; B. M. Gadella,
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cAMP Modulators before In Vitro Maturation Decrease DNA Damage and Boost Developmental Potential of Sheep Oocytes. Animals (Basel) 2021; 11:ani11092512. [PMID: 34573478 PMCID: PMC8467748 DOI: 10.3390/ani11092512] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2021] [Revised: 08/19/2021] [Accepted: 08/23/2021] [Indexed: 12/22/2022] Open
Abstract
Simple Summary Oocyte in vitro maturation has massive potential for the generation of great numbers of embryos for research and for the application of assisted reproductive technologies, such as in vitro embryo production. However, the developmental ability of in vitro matured oocytes is lower than those matured in vivo. Here, incubating the oocytes with cAMP modulating agents for two hours before in vitro maturation decreased oocyte DNA damage and increased the number of embryos generated after in vitro fertilization. The present findings could help to develop new methods to improve the quality and developmental potential of in vitro matured oocytes. Abstract To date, the underlying mechanisms by which cAMP modulators act during in vitro maturation to improve oocyte developmental competence are poorly understood. Here, we sought to fill this knowledge gap by evaluating the use of phosphodiesterase inhibitor 3-isobutyl-1-methylxanthine (IBMX) and adenylyl cyclase activator forskolin during a culture period of 2 h before in vitro maturation (pre-IVM) on the nuclear and cytoplasmic maturation features in essential organelles, cumulus cells activity, and in vitro developmental potential of sheep oocytes. Results showed that pre-IVM treatment significantly decreased (p < 0.05) the DNA damage of mature oocytes (pre-IVM = 2.08% ± 3.51% vs. control = 20.58% ± 3.51%) and increased (p ≤ 0.05) expanded blastocyst rates compared to the control (from the total of oocytes: pre-IVM = 23.89% ± 1.47% vs. control = 18.22% ± 1.47%, and from the cleaved embryos: pre-IVM = 45.16% ± 1.73% vs. control = 32.88% ± 1.73%). Considering that oocytes are highly vulnerable to the accumulation of DNA damage because of exposure to in vitro culture conditions, our results suggest that the modulation of intra-oocyte cAMP levels with forskolin and IBMX before IVM might afford oocytes a more effective DNA repair mechanism to overcome damage obstacles and ultimately improve developmental competence. This previously unappreciated action of cAMP modulators could help to develop improved methods for assisted reproduction technologies in animal and clinical research.
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Song J, Duan C, Cai W, Xu J. Predictive value of the number of frozen blastocysts in live birth rates of the transferred fresh embryos. J Ovarian Res 2021; 14:83. [PMID: 34174916 PMCID: PMC8236141 DOI: 10.1186/s13048-021-00838-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2020] [Accepted: 06/15/2021] [Indexed: 11/19/2022] Open
Abstract
Background Blastocyst development by extended culture in vitro allows the embryos to ‘select’ themselves, thus successful growth to the blastocyst stage is a reflection of the developmental competence of cleavage stage embryos in a cohort. The study aims to determine whether the number of frozen blastocysts is associated with live birth rates of the transferred fresh embryos. Method The retrospective study included 8676 cycles of first fresh embryo transfer from January 2016 to June 2019 at a fertility center of a university hospital. The patients with ≥ 10 oocytes retrieved were divided into three groups according to the number of frozen blastocysts: 0 (group 1), 1–2 (group 2), and ≥ 3 (group 3). The primary outcome measure was the live birth. The secondary outcome measures included clinical pregnancy rates and implantation rates. Logistic regression analysis was also performed. Results Live birth rates in patients with ≥ 3 and 1–2 frozen blastocysts were 47.6% and 46.1%, respectively, which were significantly higher than that in patients without blastocyst (36.0%). The clinical pregnancy rate in group 3 was 65.1%, which was also significantly higher than the other two groups (47.0% and 59.2%). The implantation rates were 35.5%, 47.6%, and 56.0% in the three groups, respectively (P < 0.001). Compared with groups of frozen blastocysts, 0 frozen blastocyst yielded a lower rate of live birth (the adjusted odds ratio: 0.526, 95% CI: 0.469, 0.612). Conclusion In patients with optimal ovarian response that retrieved ≥ 10 oocytes, fresh embryos transfer followed by having blastocysts frozen is a strong indicator of pregnancy achievement, but the number of frozen blastocysts (if not = 0) has limited value in predicting live birth rates.
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Affiliation(s)
- Jianyuan Song
- The Fourth Affiliated Hospital, Zhejiang University School of Medicine, No.1 Shang Cheng Avenue, Yiwu, 322000, Zhejiang, China
| | - Cuicui Duan
- Women's Hospital School Of Medicine, Zhejiang University, No.1 Xue Shi Road, Hangzhou, 310006, Zhejiang, China
| | - Wangyu Cai
- The Fourth Affiliated Hospital, Zhejiang University School of Medicine, No.1 Shang Cheng Avenue, Yiwu, 322000, Zhejiang, China
| | - Jian Xu
- The Fourth Affiliated Hospital, Zhejiang University School of Medicine, No.1 Shang Cheng Avenue, Yiwu, 322000, Zhejiang, China.
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11
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Koaski E, Colle CS, Salvador RA, Amaral VLL, Senn AP, Til D. In vitro maturation of Mus musculus mice oocytes after hyperosmotic shock induced by vitrification solutions. JBRA Assist Reprod 2021; 25:223-228. [PMID: 33565296 PMCID: PMC8083860 DOI: 10.5935/1518-0557.20200084] [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: 11/20/2022] Open
Abstract
Objective: To evaluate in vitro oocyte maturation rates in embryonic culture medium after induction by hyperosmotic shock caused by exposure to vitrification solutions. Methods: Bilateral oophorectomy was performed on 20 prepubescent female mice (Swiss). Immature (Prophase I) oocytes (N = 400) were obtained by ovarian dissection, divided into 4 groups, and transferred to culture dishes containing fertilization medium (Sydney IVF Fertilization Medium, Cook® Medical). The control group (CG) did not receive treatment, the test groups (G1, G2, G3) were treated with vitrification solution - 2 (VI-2: 14 M sucrose + ethylene glycol and dimethyl sulfoxide) for 30 seconds and subsequently: G1: 30 seconds in devitrification solution - 2 (DV-2: 0.5M sucrose); G2: 60 seconds DV-2; G3: 60 seconds DV-1(1M sucrose) and 180 seconds DV-2. All groups were cultivated for 24 hours in an incubator at 37ºC and 5% CO2 (Thermo model 3110). After this period, we checked their maturation status. Results: Oocytes exposed to VI-2, DV-1 and DV-2 (G3) showed the highest rate of competence in resuming meiosis and reaching the MII stage; however, there was no statistically significant difference (G3 = 50.5% - 49/97; CG = 27.8% - 10/30). Conclusions: Oocyte exposure to vitrification solutions, in order to cause osmotic shock, did not interfere with the resumption of meiosis in mice oocytes.
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Affiliation(s)
- Erica Koaski
- Universidade do Vale do Itajaí (UNIVALI), Laboratory of Reproductive Biology, Itajaí/SC, Brasil
| | - Cláudia Schneider Colle
- Universidade do Vale do Itajaí (UNIVALI), Laboratory of Reproductive Biology, Itajaí/SC, Brasil
| | - Rafael Alonso Salvador
- Universidade do Vale do Itajaí (UNIVALI), Laboratory of Reproductive Biology, Itajaí/SC, Brasil
| | | | | | - David Til
- Universidade do Vale do Itajaí (UNIVALI), Laboratory of Reproductive Biology, Itajaí/SC, Brasil
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Contreras-Solís I, Catalá M, Soto-Heras S, Roura M, Paramio MT, Izquierdo D. Effect of follicle size on hormonal status of follicular fluid, oocyte ATP content, and in vitro embryo production in prepubertal sheep. Domest Anim Endocrinol 2021; 75:106582. [PMID: 33238222 DOI: 10.1016/j.domaniend.2020.106582] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/23/2020] [Revised: 10/28/2020] [Accepted: 10/28/2020] [Indexed: 11/16/2022]
Abstract
The aim of this study was to assess the effect of follicular size on estradiol (E2) and progesterone (P4) levels in intrafollicular fluid, ATP content in oocytes, and the embryo development rate in prepubertal sheep. Slaughterhouse ovaries were dissected to recover the follicles, which were classified according to the follicle diameter as <3 mm (n = 20) and ≥3 mm (n = 17). Then, follicular fluid was obtained and analyzed by radioimmunoassay to determine the E2 and P4 concentrations. Another group of ovaries was used to recover cumulus-oocyte complexes according to follicle size. In vitro maturation (IVM), in vitro fertilization (IVF), and embryo culture were performed using standard procedures, and ATP level was assessed at 0 and 24 h of IVM. Intrafollicular concentrations of E2 and P4 and E2:P4 ratio were higher in ≥3 mm (18.7 ± 5.9 ng/mL, 7.8 ± 1.2 ng/mL, and 3.6 ± 1.3, respectively) than <3 mm (1.8 ± 0.4 ng/mL, 2.6 ± 0.3 ng/mL and 0.9 ± 0.3, respectively) follicles. The rate of ATP increased during IVM and was higher in oocytes from ≥3 mm than <3 mm (22.4 ± 0.7 and 8.6 ± 2.2-fold change; respectively) follicles. After IVF, the blastocyst development was higher in oocytes recovered from ≥3 mm (11.1 ± 0.9%) than from <3 mm (6.5 ± 0.7%) follicles. These results indicate an improvement in the competence and development of oocytes from ≥3 mm follicles with a higher E2:P4 ratio. Thus, this ratio could be used as reference to design IVM medium and to enhance the in vitro embryo production in lambs.
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Affiliation(s)
- I Contreras-Solís
- Department of Veterinary Medicine, Sassary University, Sardinia, Italy
| | - M Catalá
- Departament de Ciència Animal i dels Aliments, Facultad De Veterinària, Universitat Autònoma de Barcelona, Barcelona, Spain
| | - S Soto-Heras
- Departament de Ciència Animal i dels Aliments, Facultad De Veterinària, Universitat Autònoma de Barcelona, Barcelona, Spain
| | - M Roura
- Departament de Ciència Animal i dels Aliments, Facultad De Veterinària, Universitat Autònoma de Barcelona, Barcelona, Spain
| | - M T Paramio
- Departament de Ciència Animal i dels Aliments, Facultad De Veterinària, Universitat Autònoma de Barcelona, Barcelona, Spain
| | - D Izquierdo
- Departament de Ciència Animal i dels Aliments, Facultad De Veterinària, Universitat Autònoma de Barcelona, Barcelona, Spain.
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13
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Simões LMS, Santos APC, Bottino MP, Lima EA, Fernandes UR, Orlandi RE, Rodrigues SAD, Caixeta FM, Alves NG, Souza JC, Quintão CCR, Camargo LSA, Dode MAN, Sales JNS. Nuclear maturation kinetics and in vitro fertilization of immature bovine oocytes injected into pre-ovulatory follicles. Theriogenology 2021; 166:90-96. [PMID: 33711651 DOI: 10.1016/j.theriogenology.2020.12.021] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2020] [Revised: 12/20/2020] [Accepted: 12/30/2020] [Indexed: 11/18/2022]
Abstract
The maturation kinetics and in vitro fertilization of immature bovine oocytes injected by the intra-follicular oocyte injection (IFOT) technique into pre-ovulatory follicles of previously synchronized cows were evaluated. In Experiment 1, grade I, II and III cumulus-oocyte complexes (COCs) were randomly distributed to one of three Groups: Matvitro22 (COCs matured in vitro for 22 h), MatFol20 and MatFol28 (COCs matured in vivo after being injected into a pre-ovulatory follicle of previously synchronized cows for 19.8 ± 0.1 h and 28.3 ± 0.1 h, respectively). Cows received 12.5 mg of LH (Lutropin, Bioniche, Canada) at the time of IFOT in the MatFol20 Group or 10 h after IFOT in the MatFol28 Group. MatFol20 and MatFol28 COCs were aspirated approximately 20 h after the LH injection for nuclear maturation kinetics and recovery rate assessment. In Experiment 2, grade I, II, and III COCs were randomly distributed into two Groups: Matvitro22 Group, COCs were matured and fertilized in vitro, and MatFol20 Group, COCs were matured as in the MatFol20 Group in Experiment 1, but COCs were fertilized in vitro. Putative zygotes were classified as fertilized, unfertilized or polyspermic. In Experiment 1, the recovery rate was lower (P < 0.001) in the MatFol20 Group (52.9%, 91/172) compared with MatFol28 (72.9%, 113/155). Rate of oocytes in germinal vesicle stage, metaphase I, anaphase I and telophase I were similar among Groups. However, oocytes matured in vivo for 28.3 h had lower rate of metaphase II (P = 0.001) and greater rates of degenerated (P = 0.001) and parthenogenetically activated (P = 0.001) oocytes. In experiment 2, the rates of polyspermy and degenerated were similar between Groups. However, the rate of fertilized oocytes was greater (P = 0.05) in oocytes in the MatFol20 Group. It is concluded that oocyte in vivo maturation for 19.8 h after IFOT does not compromise the nuclear maturation kinetics and increases in vitro fertilization rates. However, the extra 10 h of intra-follicular incubation time decreased oocyte viability.
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Affiliation(s)
- L M S Simões
- Department of Veterinary Medicine, Federal University of Lavras, Lavras, MG, 37200-900, Brazil.
| | - A P C Santos
- Department of Veterinary Medicine, Federal University of Lavras, Lavras, MG, 37200-900, Brazil
| | - M P Bottino
- Department of Veterinary Medicine, Federal University of Lavras, Lavras, MG, 37200-900, Brazil
| | - E A Lima
- Department of Veterinary Medicine, Federal University of Lavras, Lavras, MG, 37200-900, Brazil
| | - U R Fernandes
- Department of Veterinary Medicine, Federal University of Lavras, Lavras, MG, 37200-900, Brazil
| | - R E Orlandi
- Department of Veterinary Medicine, Federal University of Lavras, Lavras, MG, 37200-900, Brazil
| | - S A D Rodrigues
- School of Agriculture and Veterinary Medicine, University of Brasilia, Brasilia, DF, 70910-970, Brazil
| | - F M Caixeta
- School of Agriculture and Veterinary Medicine, University of Brasilia, Brasilia, DF, 70910-970, Brazil
| | - N G Alves
- Department of Animal Science, Federal University of Lavras, Lavras, MG, 37200-900, Brazil
| | - J C Souza
- Department of Animal Science, Federal University of Lavras, Lavras, MG, 37200-900, Brazil
| | - C C R Quintão
- Embrapa Dairy Cattle, Juiz de Fora, MG, 36098-330, Brazil
| | - L S A Camargo
- Embrapa Dairy Cattle, Juiz de Fora, MG, 36098-330, Brazil
| | - M A N Dode
- Animal Reproduction Laboratory, Embrapa Genetic Resources and Biotechnology, Brasilia, DF, 70770-917, Brazil
| | - J N S Sales
- Department of Veterinary Medicine, Federal University of Lavras, Lavras, MG, 37200-900, Brazil; Federal University of Juiz de Fora, Juiz de Fora, MG, 36010-041, Brazil
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14
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Hansen PJ. The incompletely fulfilled promise of embryo transfer in cattle-why aren't pregnancy rates greater and what can we do about it? J Anim Sci 2020; 98:skaa288. [PMID: 33141879 PMCID: PMC7608916 DOI: 10.1093/jas/skaa288] [Citation(s) in RCA: 56] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2020] [Accepted: 08/27/2020] [Indexed: 12/11/2022] Open
Abstract
Typically, bovine embryos are transferred into recipient females about day 7 after estrus or anticipated ovulation, when the embryo has reached the blastocyst stage of development. All the biological and technical causes for failure of a female to produce a blastocyst 7 d after natural or artificial insemination (AI) are avoided when a blastocyst-stage embryo is transferred into the female. It is reasonable to expect, therefore, that pregnancy success would be higher for embryo transfer (ET) recipients than for inseminated females. This expectation is not usually met unless the recipient is exposed to heat stress or is classified as a repeat-breeder female. Rather, pregnancy success is generally similar for ET and AI. The implication is that either one or more of the technical aspects of ET have not yet been optimized or that underlying female fertility that causes an embryo to die before day 7 also causes it to die later in pregnancy. Improvements in pregnancy success after ET will depend upon making a better embryo, improving uterine receptivity, and forging new tools for production and transfer of embryos. Key to accelerating progress in improving pregnancy rates will be the identification of phenotypes or phenomes that allow the prediction of embryo competence for survival and maternal capacity to support embryonic development.
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Affiliation(s)
- Peter J Hansen
- Department of Animal Sciences, D.H. Barron Reproductive and Perinatal Biology Research Program, and Genetics Institute, University of Florida, Gainesville, FL
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15
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Lodde V, Colleoni S, Tessaro I, Corbani D, Lazzari G, Luciano AM, Galli C, Franciosi F. A prematuration approach to equine IVM: considering cumulus morphology, seasonality, follicle of origin, gap junction coupling and large-scale chromatin configuration in the germinal vesicle. Reprod Fertil Dev 2020; 31:1793-1804. [PMID: 31630726 DOI: 10.1071/rd19230] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2019] [Accepted: 09/13/2019] [Indexed: 12/21/2022] Open
Abstract
Several studies report that a two-step culture where mammalian oocytes are first kept under meiosis-arresting conditions (prematuration) followed by IVM is beneficial to embryo development. The most promising results were obtained by stratifying the oocyte population using morphological criteria and allocating them to different culture conditions to best meet their metabolic needs. In this study, horse oocytes were characterised to identify subpopulations that may benefit from prematuration. We investigated gap-junction (GJ) coupling, large-scale chromatin configuration and meiotic competence in compact and expanded cumulus-oocyte complexes (COCs) according to follicle size (<1, 1-2, >2cm) and season. Then we tested the effect of cilostamide-based prematuration in compact COCs collected from follicles <1 and 1-2cm in diameter on embryo development. Meiotic competence was not affected by prematuration, whereas COCs from follicles 1-2cm in diameter yielded embryos with a higher number of cells per blastocyst than oocytes that underwent direct IVM (P<0.01, unpaired Mann-Whitney test), suggesting improved developmental competence. Oocytes collected from follicles <1cm in diameter were not affected by prematuration. This study represents an extensive characterisation of the functional properties of immature horse oocytes and is the first report of the effects of cilostamide-based prematuration in horse oocyte IVM on embryo development.
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Affiliation(s)
- Valentina Lodde
- Dipartimento di Scienze Veterinarie per la Salute la Produzione Animale e la Sicurezza Alimentare 'Carlo Cantoni', Reproductive and Developmental Biology Lab, Università degli Studi di Milano, via Celoria, 10 20133 Milano, Italy
| | - Silvia Colleoni
- Laboratory of Reproductive Technologies, Avantea, Cremona, Via Porcellasco, 7f 26100 Cremona, Italy
| | - Irene Tessaro
- Dipartimento di Scienze Veterinarie per la Salute la Produzione Animale e la Sicurezza Alimentare 'Carlo Cantoni', Reproductive and Developmental Biology Lab, Università degli Studi di Milano, via Celoria, 10 20133 Milano, Italy
| | - Davide Corbani
- Dipartimento di Scienze Veterinarie per la Salute la Produzione Animale e la Sicurezza Alimentare 'Carlo Cantoni', Reproductive and Developmental Biology Lab, Università degli Studi di Milano, via Celoria, 10 20133 Milano, Italy
| | - Giovanna Lazzari
- Laboratory of Reproductive Technologies, Avantea, Cremona, Via Porcellasco, 7f 26100 Cremona, Italy; and Fondazione Avantea, Via Porcellasco, 7f 26100 Cremona, Italy
| | - Alberto M Luciano
- Dipartimento di Scienze Veterinarie per la Salute la Produzione Animale e la Sicurezza Alimentare 'Carlo Cantoni', Reproductive and Developmental Biology Lab, Università degli Studi di Milano, via Celoria, 10 20133 Milano, Italy
| | - Cesare Galli
- Laboratory of Reproductive Technologies, Avantea, Cremona, Via Porcellasco, 7f 26100 Cremona, Italy; and Fondazione Avantea, Via Porcellasco, 7f 26100 Cremona, Italy
| | - Federica Franciosi
- Dipartimento di Scienze Veterinarie per la Salute la Produzione Animale e la Sicurezza Alimentare 'Carlo Cantoni', Reproductive and Developmental Biology Lab, Università degli Studi di Milano, via Celoria, 10 20133 Milano, Italy; and Corresponding author.
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16
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Sarwar Z, Sagheer M, Sosa F, Saad M, Hassan M, Husnain A, Arshad U. Meta-analysis to determine effects of treatment with FSH when there is progestin-priming on in-vitro embryo production using ovum pick-up in Bos taurus cows. Anim Reprod Sci 2020; 221:106590. [PMID: 32927187 DOI: 10.1016/j.anireprosci.2020.106590] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2020] [Revised: 08/25/2020] [Accepted: 08/26/2020] [Indexed: 11/28/2022]
Abstract
Treatments with follicle stimulating hormone (FSH) to enhance ovarian follicular development before ovum pick-up (OPU) are important for improving in-vitro embryo production (IVEP) procedures in cows, however, their procedural efficacy needs to be evaluated. The objective of the present study was to use meta-analytic methods to determine the effects of FSH treatments prior to OPU when there is progestin-priming on ovarian functions and IVEP in parous Bos taurus cows (n = 243). The literature was systematically reviewed and data from eight experiments, with 23 treatment means including 448 OPU sessions, were used for analyses. All eight experiments included a group of cows in which there was no FSH treatment (CON), and treatment with FSH before OPU to conduct IVEP. Mixed models were fitted using MIXED and GLIMMIX procedures of SAS. Additionally, classical meta-analytical statistics were also fitted using METAN and METAREG procedures of STATA. Models included fixed effects of treatment (i.e., CON and FSH) and random effect of the experiment, and data were weighted using the inverse of the SEM squared to account for precision of each experiment. Number of medium sized follicles, quality of oocytes, and transferable embryos were greater (P < 0.05) in FSH-treated as compared with cows of the CON group, without indications of publication bias or heterogeneity of data. Taken together, the results from the present study lead to the recommendation for treatments with FSH prior to OPU for IVEP when there was progestin-priming imposed to obtain a large number of transferable embryos for economic sustainability of commercial embryo transfer programs in parous non-lactating Bos taurus cows.
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Affiliation(s)
- Zaeem Sarwar
- Department of Theriogenology, Faculty of Veterinary Science, Cholistan University of Veterinary and Animal Sciences, Bahawalpur, 63100, Pakistan
| | - Masroor Sagheer
- Department of Theriogenology, Faculty of Veterinary Science, University of Veterinary and Animal Sciences, Lahore, 54000, Pakistan
| | - Froylan Sosa
- Department of Animal Sciences, University of Florida, Gainesville, 32611, USA
| | - Muhammad Saad
- Department of Theriogenology, Faculty of Veterinary Science, Cholistan University of Veterinary and Animal Sciences, Bahawalpur, 63100, Pakistan
| | - Mubbashar Hassan
- Department of Theriogenology, Faculty of Veterinary Science, Cholistan University of Veterinary and Animal Sciences, Bahawalpur, 63100, Pakistan
| | - Ali Husnain
- Department of Theriogenology, Faculty of Veterinary Science, University of Veterinary and Animal Sciences, Lahore, 54000, Pakistan; Department of Animal Sciences, University of Florida, Gainesville, 32611, USA
| | - Usman Arshad
- Department of Theriogenology, Faculty of Veterinary Science, University of Veterinary and Animal Sciences, Lahore, 54000, Pakistan; Department of Animal Sciences, University of Florida, Gainesville, 32611, USA.
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17
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Gegenfurtner K, Flenkenthaler F, Fröhlich T, Wolf E, Arnold GJ. The impact of transcription inhibition during in vitro maturation on the proteome of bovine oocytes†. Biol Reprod 2020; 103:1000-1011. [PMID: 32856698 DOI: 10.1093/biolre/ioaa149] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2020] [Revised: 07/21/2020] [Accepted: 08/27/2020] [Indexed: 12/23/2022] Open
Abstract
Proper oocyte maturation is a prerequisite for successful reproduction and requires the resumption of meiosis to the metaphase II stage (MII). In bovine oocytes, nuclear maturation has been shown to occur in in vitro maturing cumulus-enclosed oocytes (COCs) in the absence of transcription, but their developmental capacity is reduced compared to transcriptionally competent COCs. To assess the impact of transcription during in vitro maturation of bovine COCs on the quantitative oocyte proteome, a holistic nano-LC-MS/MS analysis of germinal vesicle oocytes and MII oocytes matured with or without addition of the transcription inhibitor actinomycin D (ActD) was carried out. Analyzing eight biological replicates for each of the three groups, a total of 2018 proteins was identified. These could be clearly classified into proteins depending or not depending on transcription during oocyte maturation. Proteins whose abundance increased after maturation irrespective of transcription inhibition - and hence independent of transcription - were related to the cell cycle, reflecting the progression of meiosis, and to cellular component organization, which is crucial for cytoplasmic maturation. In contrast, transcription-dependent proteins were associated with cell-cell adhesion and translation. Since a high rate of protein synthesis in oocytes has been shown to correlate with their developmental competence, oocyte maturation in transcriptionally impaired COCs is apparently disturbed. Our experiments reveal that impaired transcription during in vitro maturation of COCs has a substantial effect on specific components of the oocyte proteome, and that transcription is required for specific classes of oocyte proteins predominantly involved in translation.
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Affiliation(s)
- Katrin Gegenfurtner
- Laboratory for Functional Genome Analysis (LAFUGA), Gene Center, LMU Munich, Germany
| | - Florian Flenkenthaler
- Laboratory for Functional Genome Analysis (LAFUGA), Gene Center, LMU Munich, Germany
| | - Thomas Fröhlich
- Laboratory for Functional Genome Analysis (LAFUGA), Gene Center, LMU Munich, Germany
| | - Eckhard Wolf
- Laboratory for Functional Genome Analysis (LAFUGA), Gene Center, LMU Munich, Germany.,Department of Veterinary Sciences, Chair for Molecular Animal Breeding and Biotechnology, Gene Center, LMU Munich, Germany.,Center for Innovative Medical Models (CiMM), LMU Munich, Germany
| | - Georg J Arnold
- Laboratory for Functional Genome Analysis (LAFUGA), Gene Center, LMU Munich, Germany
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18
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Zhang Z, He X, Liu Q, Tang J, Di R, Chu M. TGIF1 and SF1 polymorphisms are associated with litter size in Small Tail Han sheep. Reprod Domest Anim 2020; 55:1145-1153. [PMID: 32594576 PMCID: PMC7540012 DOI: 10.1111/rda.13753] [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: 04/12/2020] [Revised: 06/05/2020] [Accepted: 06/15/2020] [Indexed: 12/12/2022]
Abstract
TGF‐β induced factor homeobox 1 (TGIF1) and splicing factor 1 (SF1) are important for mammalian reproduction; however, the effects of these genes on litter size in sheep remain unexplored. In this study, we genotyped 768 ewes from seven sheep breeds at two loci: g.37871539C>T, a synonymous mutation of TGIF1; and g.42314637T>C, a 3′UTR variant of SF1. Our analysis of polymorphism revealed only two genotypes at locus g.37871539C>T in TGIF1, with most sheep populations being moderately polymorphic (0.25 < PIC < 0.5) at this site. In contrast, most breeds exhibited low polymorphism (PIC ≤0.25) at the SF1 locus g.42314637T>C. The association analysis revealed that a synonymous mutation at g.37871539C>T in TGIF1 was highly associated with litter size in Small Tail Han sheep, in which it causes a significant decrease in litter size. Conversely, while the SF1 3′UTR variant g.42314637T>C was also highly associated with litter size in sheep, it causes a significant increase in the number of litter size. Combined, these data provide valuable information regarding candidate genetic markers for sheep breeding programs.
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Affiliation(s)
- Zhuangbiao Zhang
- Key Laboratory of Animal Genetics, Breeding and Reproduction of Ministry of Agriculture and Rural Affairs, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Xiaoyun He
- Key Laboratory of Animal Genetics, Breeding and Reproduction of Ministry of Agriculture and Rural Affairs, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Qiuyue Liu
- Key Laboratory of Animal Genetics, Breeding and Reproduction of Ministry of Agriculture and Rural Affairs, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Jishun Tang
- Key Laboratory of Animal Genetics, Breeding and Reproduction of Ministry of Agriculture and Rural Affairs, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing, China.,Institute of Animal Husbandry and Veterinary Medicine, Anhui Academy of Agricultural Sciences, Hefei, China
| | - Ran Di
- Key Laboratory of Animal Genetics, Breeding and Reproduction of Ministry of Agriculture and Rural Affairs, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Mingxing Chu
- Key Laboratory of Animal Genetics, Breeding and Reproduction of Ministry of Agriculture and Rural Affairs, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing, China
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19
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Walter J, Monthoux C, Fortes C, Grossmann J, Roschitzki B, Meili T, Riond B, Hofmann-Lehmann R, Naegeli H, Bleul U. The bovine cumulus proteome is influenced by maturation condition and maturational competence of the oocyte. Sci Rep 2020; 10:9880. [PMID: 32555221 PMCID: PMC7303117 DOI: 10.1038/s41598-020-66822-z] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2019] [Accepted: 05/26/2020] [Indexed: 02/07/2023] Open
Abstract
In vitro maturation (IVM) of oocytes has still a negative impact on the developmental competence of oocytes. Therefore, this study analysed the cumulus proteome of individual cumulus-oocyte complexes (COCs) with and without maturational competence, matured under in vivo or in vitro conditions (n = 5 per group). A novel, ultrasensitive mass spectrometry (MS) based protein profiling approach, using label-free quantification, was applied. The detected cumulus proteome included 2226 quantifiable proteins and was highly influenced by the maturation condition (479 differentially expressed proteins) as well as maturational competence of the corresponding oocyte (424 differentially expressed proteins). Enrichment analysis showed an overrepresentation of the complement and coagulation cascades (CCC), ECM-receptor interaction and steroid biosynthesis in cumulus of COCs that matured successfully under in vivo conditions. Verification of the origin of CCC proteins was achieved through detection of C3 secretion into the maturation medium, with significantly increasing concentrations from 12 (48.4 ng/ml) to 24 hours (68 ng/ml: p < 0.001). In relation, concentrations in follicular fluid, reflecting the in vivo situation, were >100x higher. In summary, this study identified important pathways that are impaired in IVM cumulus, as well as potential markers of the maturational competence of oocytes.
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Affiliation(s)
- J Walter
- Clinic of Reproductive Medicine, Vetsuisse Faculty, University of Zurich, Zurich, Switzerland.
| | - C Monthoux
- Clinic of Reproductive Medicine, Vetsuisse Faculty, University of Zurich, Zurich, Switzerland
| | - C Fortes
- Functional Genomics Centre Zurich, University and ETH Zurich, Zurich, Switzerland
| | - J Grossmann
- Functional Genomics Centre Zurich, University and ETH Zurich, Zurich, Switzerland
- Swiss Institute of Bioinformatics, (SIB), Zurich, Switzerland
| | - B Roschitzki
- Functional Genomics Centre Zurich, University and ETH Zurich, Zurich, Switzerland
| | - T Meili
- Clinical Laboratory, Department of Clinical Diagnostics and Services, Vetsuisse Faculty, University of Zurich, Zurich, Switzerland
- Center for Clinical Studies, Vetsuisse Faculty, University of Zurich, Zurich, Switzerland
| | - B Riond
- Clinical Laboratory, Department of Clinical Diagnostics and Services, Vetsuisse Faculty, University of Zurich, Zurich, Switzerland
| | - R Hofmann-Lehmann
- Clinical Laboratory, Department of Clinical Diagnostics and Services, Vetsuisse Faculty, University of Zurich, Zurich, Switzerland
- Center for Clinical Studies, Vetsuisse Faculty, University of Zurich, Zurich, Switzerland
| | - H Naegeli
- Institute of Pharmacology and Toxicology, Vetsuisse Faculty, University of Zurich, Zurich, Switzerland
| | - U Bleul
- Clinic of Reproductive Medicine, Vetsuisse Faculty, University of Zurich, Zurich, Switzerland
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20
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Santana B, Sobral G, Gomes E, Batista A, Teixeira L, Tavares K, Bertolini M, Carneiro G. Effect of Rolipram on in vitro maturation, gene expression and embryonic development in bovines. ARQ BRAS MED VET ZOO 2019. [DOI: 10.1590/1678-4162-10214] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
ABSTRACT The aim of this work was to evaluate the effect of the Rolipram during the maturation of bovine oocytes and gene expression of embryos produced in vitro. Bovine ovaries were collected in slaughterhouse. The COCs were selected and divided into 5 groups: Control 0 time; Control: IVM for 24 hours; Rolipram treatments with IVM blocking for 24 hours in maturation medium containing (100, 150 and 200µM). After 24 hours all groups were reseated in IVM for another 24 hours. Subsequently COCs were subjected to the same IVM system and fertilized, being checked for cleavage post fertilization and for blastocyst. In addition, performed expression of the following genes: Mater, BMP15 and Bax. No difference was found in gene expression. Of oocytes evaluated shortly after follicular aspiration, 79.00% were in GV, GVBD, MI, while 13.40%, were in MII and 7.60%, D/NI. Significant difference was observed in different concentrations (T100, T200 and T150µM) in oocytes that have reached the MII phase compared to control treatments (P= 0.003). Differences were observed in cleavage rate (P< 0.05) between T150 and T200 when compared to the C/24 Group. A high difference was observed on blastocyst rate (P< 0.001) among treatments compared to the control group.
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Affiliation(s)
- B.B. Santana
- Universidade Federal Rural de Pernambuco, Brazil
| | - G.G. Sobral
- Universidade Federal Rural de Pernambuco, Brazil
| | - E.T. Gomes
- Universidade Federal Rural de Pernambuco, Brazil
| | - A.M. Batista
- Universidade Federal Rural de Pernambuco, Brazil
| | | | | | - M. Bertolini
- Universidade Federal do Rio Grande do Sul, Brazil
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21
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Obuchi T, Osada M, Ozawa T, Nakagawa H, Hayashi M, Akiyama K, Sakagami N, Miura R, Geshi M, Ushijima H. Comparative evaluation of the cost and efficiency of four types of sexing methods for the production of dairy female calves. J Reprod Dev 2019; 65:345-352. [PMID: 31178552 PMCID: PMC6708860 DOI: 10.1262/jrd.2019-028] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
This study was conducted to evaluate and compare the economic benefits of different embryo sexing methods, based on the cost per female dairy calf produced. Female calves were produced from
four kinds of female embryos: (1) those collected from superstimulated donors at 7–8 days after artificial insemination (AI) with X-sorted semen; (2) those sex-determined by loop-mediated
isothermal amplification assay of a biopsy sample of embryos collected from superstimulated donors after AI with conventional unsorted semen; (3) those obtained by
invitro embryo production (IVEP), using X-sorted semen and in vitro-matured oocytes collected from donors by ovum pick-up (OPU); and (4)
those obtained by IVEP, using X-sorted semen and oocytes collected by OPU after dominant follicle ablation and follicle growth stimulation of the donors. The respective productivities of
female calves per technical service and the total production cost per female calf of each sexing method were compared. The production cost per female calf (66,537 JPY), as calculated from
the number of female calves per service (1.30), pregnancy rate of transfer (42.9%), rate of female calves obtained (92.9%), and total cost of the method (56,643 JPY plus embryo transfer
fee), was less for IVEP with X-sorted semen and follicular growth-stimulated (FGS) oocytes than for the other groups (P < 0.05). The results demonstrate that embryo production with
X-sorted semen and FGS oocytes provides a more efficient method for producing female calves than the other embryo sexing methods.
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Affiliation(s)
- Tomoko Obuchi
- Department of Applied Life Science, Nippon Veterinary and Life Science University, Tokyo 180-8602, Japan.,Present: Division of Animal Reproduction, Maebashi Institute of Animal Science, Livestock Improvement Association of Japan (LIAJ), Gunma 371-0121, Japan
| | - Masahiro Osada
- Department of Applied Life Science, Nippon Veterinary and Life Science University, Tokyo 180-8602, Japan
| | - Takeyuki Ozawa
- Department of Applied Life Science, Nippon Veterinary and Life Science University, Tokyo 180-8602, Japan
| | - Hiroshi Nakagawa
- Niigata Agricultural Research Institute, Niigata 955-0143, Japan
| | - Michiko Hayashi
- Ishikawa Livestock Research Center, Ishikawa 929-1325, Japan
| | - Kiyoshi Akiyama
- Kanagawa Prefectural Livestock Industry Technology Center, Kanagawa 243-0417, Japan
| | - Nobutada Sakagami
- Kanagawa Prefectural Livestock Industry Technology Center, Kanagawa 243-0417, Japan
| | - Ryotaro Miura
- Department of Veterinary Medicine, Nippon Veterinary and Life Science University, Tokyo 180-8602, Japan
| | - Masaya Geshi
- Animal Breeding and Reproduction Research Division, NARO Institute of Livestock and Grassland Science, Ibaraki 305-0901, Japan
| | - Hitoshi Ushijima
- Department of Applied Life Science, Nippon Veterinary and Life Science University, Tokyo 180-8602, Japan
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22
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Egashira J, Ihara Y, Khatun H, Wada Y, Konno T, Tatemoto H, Yamanaka KI. Efficient in vitro embryo production using in vivo-matured oocytes from superstimulated Japanese Black cows. J Reprod Dev 2019; 65:183-190. [PMID: 30745496 PMCID: PMC6473104 DOI: 10.1262/jrd.2018-155] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
We examined whether the use of in vivo-matured oocytes, collected by ovum pick-up (OPU) from superstimulated Japanese Black cows, can improve the productivity and quality of in vitro produced embryos. The cows were superstimulated by treatment with progesterone, GnRH, FSH and prostaglandin F2α according to a standardized protocol. The resulting in vivo-matured oocytes were collected by OPU and used subsequently for the other experiments. The immature oocytes from cows in the non-stimulated group were collected by OPU and then subjected to maturation in vitro. We found that the rate of normally distributed cortical granules of the matured oocyte cytoplasm in the superstimulated group was significantly higher than that in the non-stimulated group. The normal cleavage rate (i.e., production of embryos with two equal blastomeres without fragmentation) and freezable blastocyst rate were significantly higher in the superstimulated group than in the non-stimulated group. Among the transferable blastocysts, the ratio of embryos from normal cleavage was also significantly higher in the superstimulated group than in the non-stimulated group. For in vivo-matured oocytes, it was observed that the pregnancy rates were significantly higher when normally cleaved embryos were used for transfer. Taken together, these results suggest that high-quality embryos with respect to developmental kinetics can be efficiently produced with the use of in vivo-matured oocytes collected by OPU from superstimulated Japanese Black cows.
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Affiliation(s)
- Junki Egashira
- Faculty of Agriculture, Saga University, Saga 840-8502, Japan.,The United Graduate School of Agricultural Sciences, Kagoshima University, Kagoshima 890-0065, Japan.,Saga Prefectural Livestock Experiment Station, Saga 849-2305, Japan
| | - Yusuke Ihara
- Faculty of Agriculture, Saga University, Saga 840-8502, Japan
| | - Hafiza Khatun
- Faculty of Agriculture, Saga University, Saga 840-8502, Japan.,The United Graduate School of Agricultural Sciences, Kagoshima University, Kagoshima 890-0065, Japan.,Faculty of Animal Husbandry, Bangladesh Agricultural University, Mymensingh, Bangladesh
| | - Yasuhiko Wada
- Faculty of Agriculture, Saga University, Saga 840-8502, Japan.,The United Graduate School of Agricultural Sciences, Kagoshima University, Kagoshima 890-0065, Japan
| | - Toshihiro Konno
- The United Graduate School of Agricultural Sciences, Kagoshima University, Kagoshima 890-0065, Japan.,Faculty of Agriculture, University of the Ryukyus, Okinawa 903-0213, Japan
| | - Hideki Tatemoto
- The United Graduate School of Agricultural Sciences, Kagoshima University, Kagoshima 890-0065, Japan.,Faculty of Agriculture, University of the Ryukyus, Okinawa 903-0213, Japan
| | - Ken-Ichi Yamanaka
- Faculty of Agriculture, Saga University, Saga 840-8502, Japan.,The United Graduate School of Agricultural Sciences, Kagoshima University, Kagoshima 890-0065, Japan
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23
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Camargo LSA, Munk M, Sales JN, Wohlres-Viana S, Quintão CCR, Viana JHM. Differential gene expression between in vivo and in vitro maturation: a comparative study with bovine oocytes derived from the same donor pool. JBRA Assist Reprod 2019; 23:7-14. [PMID: 30614236 PMCID: PMC6364282 DOI: 10.5935/1518-0557.20180084] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Objective: In vitro maturation has been shown to influence gene
expression in oocytes, but a common shortcoming in reports on the matter has
been the use of different donors in each experimental group thus
disregarding donor effects. This study aimed to investigate the abundance of
mRNA in oocytes matured in vivo and in
vitro obtained from the same group of donors. Methods: A bovine model was used to assess the relative abundance of specific
transcripts in in vitro-matured (IN VITRO-OPU) and in
vivo-matured (IN VIVO-OPU) oocytes collected from the same donors
by transvaginal ovum pick-up (OPU). Transcript abundance in oocytes from the
IN VIVO-OPU group and oocytes matured in vitro but
retrieved from different cows slaughtered at a commercial abattoir (IN
VITRO-Abattoir group) was also compared. Total RNA was extracted from
denuded oocytes and cDNA was produced via reverse transcription using an
oligo(dT) primer for relative quantification of eight target transcripts by
real-time PCR. Results: Oocytes in the IN VITRO-OPU group had lower (p<0.05)
abundance of peroxiredoxin 1 (Prdx1), heat shock protein
70.1 (Hsp70.1), growth and differentiation factor 9
(Gdf9), and maternal antigen that embryo requires
(Mater) transcripts than the oocytes in the IN VIVO-OPU
group, all obtained from the same pool of donor cows. Similar results were
seen in the comparisons involving the IN VIVO-OPU and IN VITRO-Abattoir
groups (p<0.05). Conclusion: In vitro maturation affected the abundance of polyadenylated
transcripts in the oocyte cytoplasm when compared to in
vivo maturation induced by exogenous hormones in oocytes
collected from the same donor pool.
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Affiliation(s)
| | - Michele Munk
- Federal University of Juiz de Fora, Juiz de Fora, MG, Brazil
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24
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Sakagami N, Konda K, Hashimura S, Kawate N, Inaba T, Tamada H. Production of Japanese Black calves by the transfer of embryos developed from in vitro-fertilized oocytes derived by ovum pick up and matured in culture with the mitogen-activated protein kinase kinase inhibitor U0126. J Vet Med Sci 2019; 81:379-382. [PMID: 30700676 PMCID: PMC6451900 DOI: 10.1292/jvms.18-0460] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
This study investigated whether treatment with the mitogen-activated protein kinase kinase inhibitor U0126 during in vitro maturation (IVM), which has previously been reported to improve oocyte developmental competence, is practical for use in calf production using ovum pick up (OPU)-derived oocytes. Two Japanese Black cows were repeatedly and simultaneously treated to stimulate follicular growth and were prepared for OPU. Cumulus-oocyte complexes (COCs) were collected from one cow using a collection medium containing 5 µM U0126 and were cultured in medium supplemented with the same concentration of U0126 for the first 2 hr of IVM; COCs from the other cow were used as controls without U0126 treatment. The cows were exchanged between the two groups at every sequential OPU (n=8). The number of oocytes developing to blastocysts in the U0126-treated group (39.1%, 34/87) was significantly higher than that in the control group (22.1%, 19/86). Eight blastocysts produced with U0126 treatment were transferred to recipients, and four normal calves were obtained. The results indicate that embryos develop efficiently from OPU-derived oocytes treated with U0126, and that these embryos may be of practical use in calf production.
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Affiliation(s)
- Nobutada Sakagami
- Kanagawa Prefectural Livestock Industry Technology Center, Ebina, Kanagawa 243-0417, Japan
| | - Kunitoshi Konda
- Kanagawa Prefectural Livestock Industry Technology Center, Ebina, Kanagawa 243-0417, Japan
| | - Shinji Hashimura
- Kanagawa Prefectural Livestock Industry Technology Center, Ebina, Kanagawa 243-0417, Japan
| | - Noritoshi Kawate
- Department of Advanced Pathobiology, Graduate School of Life and Environmental Sciences, Osaka Prefecture University, Osaka 598-8531, Japan
| | - Toshio Inaba
- Department of Advanced Pathobiology, Graduate School of Life and Environmental Sciences, Osaka Prefecture University, Osaka 598-8531, Japan
| | - Hiromichi Tamada
- Department of Advanced Pathobiology, Graduate School of Life and Environmental Sciences, Osaka Prefecture University, Osaka 598-8531, Japan
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25
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Alves SVP, da Costa EP, Queiroz-Castro VLD, Machado-Neves M, Guimarães JD, Gomes LL, Azevedo Junior MA, Júnior AS. Bovine herpesvirus 1 can impact the bovine oocyte development during in vitro maturation. Res Vet Sci 2018; 123:135-140. [PMID: 30641473 DOI: 10.1016/j.rvsc.2018.12.020] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2018] [Revised: 12/08/2018] [Accepted: 12/31/2018] [Indexed: 12/11/2022]
Abstract
Bovine herpesvirus 1 (BoHV-1) disseminates easily, is difficult to control, and is widely spread in cattle herds worldwide. BoHV-1 causes a broad range of losses to the cattle industry, mainly concerning reproduction. Previous studies involving experimental infection of BoHV-1 in an in vitro embryo production system have reported impairment of embryonic development by BoHV-1. In this study, we evaluated the interference of BoHV-1 in the in vitro maturation system of cumulus-oocyte complexes (COCs) and denuded oocytes (DOs) cultured with a cumulus cell suspension. Blood samples and ovaries were collected from slaughterhouse cows unvaccinated against BoHV-1. Using virus neutralization assays, the seropositive animals were classified according to their antibody titers. The oocytes were recovered by follicular aspiration and divided into two groups, COCs and DOs, which were evaluated for their nuclear maturation capacity using immunofluorescence assays by laser scanning confocal microscopy. Two experiments were carried out: (I) in vitro maturation of COCs and DOs after artificial infection of seronegative animals and (II) in vitro maturation of COCs and DOs of seropositive animals. In experiment I, a difference (P < 0.01) was observed between the maturation rates of the control group COCs (78.2%) and the infected COCs (43.6%). In experiment II, there was a difference (P < 0.01) in the maturation rate between animals with antibody titers ≥16 (56.9%) and the control group (79.4%). Immunofluorescence assays identified BoHV-1 in the COCs and DOs. Therefore, it was concluded that BoHV-1 affects the in vitro maturation process in both in vitro and natural infections.
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Affiliation(s)
- Saullo V P Alves
- Department of Veterinary, Division of Animal Reproduction, Laboratory of Oocyte Maturation and in vitro Fertilization, Federal University of Vicosa (Universidade Federal de Vicosa-UFV), Vicosa, Minas Gerais, Brazil.
| | - Eduardo P da Costa
- Department of Veterinary, Division of Animal Reproduction, Laboratory of Oocyte Maturation and in vitro Fertilization, Federal University of Vicosa (Universidade Federal de Vicosa-UFV), Vicosa, Minas Gerais, Brazil.
| | - Vanessa L D Queiroz-Castro
- Department of Veterinary, Division of Animal Reproduction, Laboratory of Oocyte Maturation and in vitro Fertilization, Federal University of Vicosa (Universidade Federal de Vicosa-UFV), Vicosa, Minas Gerais, Brazil.
| | - Mariana Machado-Neves
- Department of General Biology, Laboratory of Structural Biology, UFV, Vicosa, Minas Gerais, Brazil.
| | - José D Guimarães
- Department of Veterinary, Division of Animal Reproduction, Laboratory of Oocyte Maturation and in vitro Fertilization, Federal University of Vicosa (Universidade Federal de Vicosa-UFV), Vicosa, Minas Gerais, Brazil.
| | - Lidiane L Gomes
- Department of Veterinary, Division of Animal Reproduction, Laboratory of Oocyte Maturation and in vitro Fertilization, Federal University of Vicosa (Universidade Federal de Vicosa-UFV), Vicosa, Minas Gerais, Brazil
| | - Marcos A Azevedo Junior
- Department of Veterinary, Division of Animal Reproduction, Laboratory of Oocyte Maturation and in vitro Fertilization, Federal University of Vicosa (Universidade Federal de Vicosa-UFV), Vicosa, Minas Gerais, Brazil.
| | - Abelardo Silva Júnior
- Department of Veterinary, Division of Preventive Medicine and Public Health, Laboratory of Animal Virology, UFV, Vicosa, Minas Gerais, Brazil.
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26
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Herta AC, Lolicato F, Smitz JEJ. In vitro follicle culture in the context of IVF. Reproduction 2018; 156:F59-F73. [PMID: 29980584 DOI: 10.1530/rep-18-0173] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2018] [Accepted: 06/19/2018] [Indexed: 12/24/2022]
Abstract
The currently available assisted reproduction techniques for fertility preservation (i.e. in vitro maturation (IVM) and in vitro fertilization) are insufficient as stand-alone procedures as only few reproductive cells can be conserved with these techniques. Oocytes in primordial follicles are well suited to survive the cryopreservation procedure and of use as valuable starting material for fertilization, on the condition that these could be grown up to fully matured oocytes. Our understanding of the biological mechanisms directing primordial follicle activation has increased over the last years and this knowledge has paved the way toward clinical applications. New multistep in vitro systems are making use of purified precursor cells and extracellular matrix components and by applying bio-printing technologies, an adequate follicular niche can be built. IVM of human oocytes is clinically applied in patients with polycystic ovary/polycystic ovary syndrome; related knowhow could become useful for fertility preservation and for patients with maturation failure and follicle-stimulating hormone resistance. The expectations from the research on human ovarian tissue and immature oocytes cultures, in combination with the improved vitrification methods, are high as these technologies can offer realistic potential for fertility preservation.
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Affiliation(s)
- Anamaria C Herta
- Follicle Biology LaboratoryVrije Universiteit Brussel, Brussels, Belgium
| | - Francesca Lolicato
- Follicle Biology LaboratoryVrije Universiteit Brussel, Brussels, Belgium
| | - Johan E J Smitz
- Follicle Biology LaboratoryVrije Universiteit Brussel, Brussels, Belgium
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27
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Global, Survival, and Apoptotic Transcriptome during Mouse and Human Early Embryonic Development. BIOMED RESEARCH INTERNATIONAL 2018; 2018:5895628. [PMID: 30515407 PMCID: PMC6236930 DOI: 10.1155/2018/5895628] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/18/2018] [Revised: 09/24/2018] [Accepted: 10/04/2018] [Indexed: 12/16/2022]
Abstract
Survival and cell death signals are crucial for mammalian embryo preimplantation development. However, the knowledge on the molecular mechanisms underlying their regulation is still limited. Mouse studies are widely used to understand preimplantation embryo development, but extrapolation of these results to humans is questionable. Therefore, we wanted to analyse the global expression profiles during early mouse and human development with a special focus on genes involved in the regulation of the apoptotic and survival pathways. We used DNA microarray technology to analyse the global gene expression profiles of preimplantation human and mouse embryos (metaphase II oocytes, embryos at the embryonic genome activation stage, and blastocysts). Components of the major apoptotic and survival signalling pathways were expressed during early human and mouse embryonic development; however, most expression profiles were species-specific. Particularly, the expression of genes encoding components and regulators of the apoptotic machinery were extremely stable in mouse embryos at all analysed stages, while it was more stage-specific in human embryos. CASP3, CASP9, and AIF were the only apoptosis-related genes expressed in both species and at all studied stages. Moreover, numerous transcripts related to the apoptotic and survival pathway were reported for the first time such as CASP6 and IL1RAPL1 that were specific to MII oocytes; CASP2, ENDOG, and GFER to blastocysts in human. These findings open new perspectives for the characterization and understanding of the survival and apoptotic signalling pathways that control early human and mouse embryonic development.
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28
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Sánchez F, Lolicato F, Romero S, De Vos M, Van Ranst H, Verheyen G, Anckaert E, Smitz JEJ. An improved IVM method for cumulus-oocyte complexes from small follicles in polycystic ovary syndrome patients enhances oocyte competence and embryo yield. Hum Reprod 2018; 32:2056-2068. [PMID: 28938744 DOI: 10.1093/humrep/dex262] [Citation(s) in RCA: 101] [Impact Index Per Article: 16.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2017] [Accepted: 07/27/2017] [Indexed: 11/14/2022] Open
Abstract
STUDY QUESTION Are meiotic and developmental competence of human oocytes from small (2-8 mm) antral follicles improved by applying an optimized IVM method involving a prematuration step in presence of C-Type Natriuretic Peptide (CNP) followed by a maturation step in presence of FSH and Amphiregulin (AREG)? SUMMARY ANSWER A strategy involving prematuration culture (PMC) in the presence of CNP followed by IVM using FSH + AREG increases oocyte maturation potential leading to a higher availability of Day 3 embryos and good-quality blastocysts for single embryo transfer. WHAT IS KNOWN ALREADY IVM is a minimal-stimulation ART with reduced hormone-related side effects and risks for the patients, but the approach is not widely used because of an efficiency gap compared to conventional ART. In vitro systems that enhance synchronization of nuclear and cytoplasmic maturation before the meiotic trigger are crucial to optimize human IVM systems. However, previous PMC attempts have failed in sustaining cumulus-oocyte connections throughout the culture period, which prohibited a normal cumulus-oocyte communication and precluded an adequate response by the cumulus-oocyte complex (COC) to the meiotic trigger. STUDY DESIGN, SIZE, DURATION A first prospective study involved sibling oocytes from a group of 15 patients with polycystic ovary syndrome (PCOS) to evaluate effects of a new IVM culture method on oocyte nuclear maturation and their downstream developmental competence. A second prospective study in an additional series of 15 women with polycystic ovaries characterized and fine-tuned the culture conditions. PARTICIPANTS/MATERIALS, SETTING, METHODS Fifteen women with PCOS (according to Rotterdam criteria) underwent IVM treatment after 3-5 days of highly purified human menopausal gonadotropin (HP-hMG) stimulation and no human chorionic gonadotropin (hCG) trigger before oocyte retrieval. A first study was designed with sibling oocytes to prospectively evaluate the impact of an IVM culture method: 24 h PMC with CNP + 30 h IVM with FSH and AREG, on embryo yield, in comparison to the standard (30 h) IVM clinical protocol (Group I, n = 15). A second prospective study was performed in 15 women with polycystic ovaries, to characterize and optimize the PMC conditions (Group II, n = 15). The latter study involved the evaluation of oocyte meiotic arrest, the preservation of cumulus-oocyte transzonal projections (TZPs), the patterns of oocyte chromatin configuration and cumulus cells apoptosis following the 24 and 46 h PMC. Furthermore, oocyte developmental potential following PMC (24 and 46 h) + IVM was also evaluated. The first 20 good-quality blastocysts from PMC followed by IVM were analysed by next generation sequencing to evaluate their aneuploidy rate. MAIN RESULTS AND THE ROLE OF CHANCE PMC in presence of CNP followed by IVM using FSH and AREG increased the meiotic maturation rate per COC to 70%, which is significantly higher than routine standard IVM (49%; P ≤ 0.001). Hence, with the new system the proportion of COCs yielding transferable Day 3 embryos and good-quality blastocysts increased compared to routine standard IVM (from 23 to 43%; P ≤ 0.001 and from 8 to 18%; P ≤ 0.01, respectively). CNP was able to prevent meiosis resumption for up to 46 h. After PMC, COCs had preserved cumulus-oocyte TZPs. The blastocysts obtained after PMC + IVM did not show increased aneuploidy rates as compared to blastocysts from conventional ART. LIMITATIONS REASONS FOR CAUTION The novel IVM approach in PCOS patients was tested in oocytes derived from small antral follicles which have an intrinsically low developmental potential. Validation of the system would be required for COCs from different (larger) follicular sizes, which may involve further adjustment of PMC conditions. Furthermore, considering that this is a novel strategy in human IVM treatment, its global efficiency needs to be confirmed in large prospective randomized controlled trials. The further application in infertile patients without PCOS, e.g. cancer patients, remains to be evaluated. WIDER IMPLICATIONS OF THE FINDINGS The findings of this pilot study suggest that the efficiency gap between IVM and conventional IVF can be reduced by fine-tuning of the culture methods. This novel strategy opens new perspectives for safe and patient-friendly ART in patients with PCOS. STUDY FUNDING/COMPETING INTEREST(S) IVM research at the Vrije Universiteit Brussel has been supported by grants from: the Institute for the Promotion of Innovation by Science and Technology in Flanders (Agentschap voor Innovatie door Wetenschap en Technologie-IWT, project 110680); the Fund for Research Flanders (Fonds Wetenschappelijk Onderzoek-Vlaanderen-FWO, project G.0343.13), the Belgian Foundation Against Cancer (HOPE project, Dossier C69). The authors have no conflicts of interest.
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Affiliation(s)
- F Sánchez
- Follicle Biology Laboratory (FOBI), UZ Brussel, Vrije Universiteit Brussel, Laarbeeklaan 101, Brussels 1090, Belgium
| | - F Lolicato
- Follicle Biology Laboratory (FOBI), UZ Brussel, Vrije Universiteit Brussel, Laarbeeklaan 101, Brussels 1090, Belgium
| | - S Romero
- Follicle Biology Laboratory (FOBI), UZ Brussel, Vrije Universiteit Brussel, Laarbeeklaan 101, Brussels 1090, Belgium.,Centro de Estudios e Investigaciones en Biología y Medicina Reproductiva-BIOMER, Lima, Peru
| | - M De Vos
- Follicle Biology Laboratory (FOBI), UZ Brussel, Vrije Universiteit Brussel, Laarbeeklaan 101, Brussels 1090, Belgium.,Centre for Reproductive Medicine, UZ Brussel, Vrije Universiteit Brussel, Laarbeeklaan 101, Brussels 1090, Belgium
| | - H Van Ranst
- Follicle Biology Laboratory (FOBI), UZ Brussel, Vrije Universiteit Brussel, Laarbeeklaan 101, Brussels 1090, Belgium
| | - G Verheyen
- Centre for Reproductive Medicine, UZ Brussel, Vrije Universiteit Brussel, Laarbeeklaan 101, Brussels 1090, Belgium
| | - E Anckaert
- Follicle Biology Laboratory (FOBI), UZ Brussel, Vrije Universiteit Brussel, Laarbeeklaan 101, Brussels 1090, Belgium
| | - J E J Smitz
- Follicle Biology Laboratory (FOBI), UZ Brussel, Vrije Universiteit Brussel, Laarbeeklaan 101, Brussels 1090, Belgium
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29
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Sirard MA. 40 years of bovine IVF in the new genomic selection context. Reproduction 2018; 156:R1-R7. [PMID: 29636405 DOI: 10.1530/rep-18-0008] [Citation(s) in RCA: 45] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2018] [Accepted: 04/10/2018] [Indexed: 01/22/2023]
Abstract
The development of a complex technology such as in vitro fertilization (IVF) requires years of experimentation, sometimes comparing several species to learn how to create the right in vitro environment for oocytes, spermatozoa and early embryos. At the same time, individual species characteristics such as gamete physiology and gamete interaction are recently evolved traits and must be analysed within the context of each species. In the last 40 years since the birth of Louise Brown, IVF techniques progressed and are now used in multiple domestic and non-domestic animal species around the world. This does not mean that the technology is completely matured or satisfactory; a number of problems remain to be solved and several procedures still need to be optimized. The development of IVF in cattle is particularly interesting since agriculture practices permitted the commercial development of the procedure and it is now used at a scale comparable to human IVF (millions of newborns). The genomic selection of young animals or even embryos combined with sexing and freezing technologies is driving a new era of IVF in the dairy sector. The time has come for a retrospective analysis of the success and pitfalls of the last 40 years of bovine IVF and for the description of the challenges to overcome in the years to come.
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Affiliation(s)
- Marc-André Sirard
- Centre de Recherche en ReproductionDéveloppement et Santé Intergénérationnelle (CRDSI), Département des Sciences Animales, Faculté des Sciences de l'Agriculture et de l'Alimentation, Université Laval, Québec, Canada
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30
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Al-Mutary M, Al-Ghadi M, Al-Himaidi A, Iwamoto D, Al-Anazi Y, Ammari A, Ahmad J, Al-Khedhairy A. Using RT-PCR and glutathione level to study the effect of follicular fluid on in vitro maturation and gene expression of sheep oocytes. Saudi J Biol Sci 2018; 26:1216-1222. [PMID: 31516351 PMCID: PMC6733311 DOI: 10.1016/j.sjbs.2018.01.001] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2017] [Revised: 01/02/2018] [Accepted: 01/14/2018] [Indexed: 12/11/2022] Open
Abstract
The aim of this study is to evaluate the effect of sheep follicular fluid (SFF) supplementation of the in vitro maturation (IVM) media of sheep oocytes on the resumption of meiosis, glutathione (GSH) level, and expression of apoptosis (Bax, Bcl-2) as well as heat shock protein beta-1 (HSPB1) genes. Sheep ovaries were collected from the central slaughterhouse of Riyadh city, KSA. Oocytes were aspirated from 3 to 8 mm follicles. Sheep oocytes were cultured in maturation medium with different concentrations of sheep follicular fluid: 0% (control), 10%, 20% and 40% for 24 h. The results indicated that the maturation rate of oocytes was significantly (p ≤ .05) decreased in 40% SFF (36.87%) versus the control (61.3%), 10% SFF (63.95%) and 20% SFF (64.08%). The supplementation of the IVM medium with 10% SFF induced an intra-oocyte GSH concentration that was significantly higher than in sheep oocytes cultured with 20% and 40% SFF and similar to the GSH content in oocytes cultured without SFF. Real-time polymerase chain reaction analysis of gene expression revealed no significant differences in the Bax and HSPB1 genes between the control and 10% SFF, whereas they were significantly higher in 40% FF (p ≤ .05) compared to the control. The expression of Bax:Bcl-2 was significantly higher in 20% and 40% SFF compared to the control group. In conclusion, the addition of SFF to the IVM culture of sheep oocytes is recommended to support nuclear maturation and increase oocyte competence.
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Affiliation(s)
- M Al-Mutary
- Basic Sciences Department, College of Education, Imam Abdulrahman Bin Faisal University, Dammam, Saudi Arabia
| | - M Al-Ghadi
- Department of Zoology, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia
| | - A Al-Himaidi
- Department of Zoology, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia
| | - D Iwamoto
- Department of Zoology, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia.,Kinki University, Faculty of Biological-Oriented Sci. and Technology, Dept. of Genetic Engineering, Wakayama, Japan
| | - Y Al-Anazi
- Department of Zoology, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia
| | - A Ammari
- Department of Zoology, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia
| | - J Ahmad
- Department of Zoology, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia
| | - A Al-Khedhairy
- Department of Zoology, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia
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31
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Dorfeshan P, Ghaffari Novin M, Salehi M, Masteri Farahani R, Fadaei-Fathabadi F, Sehatti R. The Effects of In Vitro Maturation Technique on The Expression of Genes Involved in Embryonic Genome Activation of Human Embryos. CELL JOURNAL 2017; 20:90-97. [PMID: 29308624 PMCID: PMC5759685 DOI: 10.22074/cellj.2018.4804] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/24/2016] [Accepted: 02/14/2017] [Indexed: 01/25/2023]
Abstract
Objective In vitro maturation technique (IVM) is shown to have an effect on full maturation of immature oocytes and
the subsequent embryo development. Embryonic genome activation (EGA) is considered as a crucial and the first
process after fertilization. EGA failure leads to embryo arrest and possible implantation failure. This study aimed to
determine the role of IVM in EGA-related genes expression in human embryo originated from immature oocytes and
recovered from women receiving gonadotrophin treatment for assisted reproduction.
Materials and Methods In this experimental study, germinal vesicle (GV) oocytes were cultured in vitro. After
intracytoplasmic sperm injection of the oocytes, fertilization, cleavage and embryo quality score were assessed in
vitro and in vivo. After 3-4 days, a single blastomere was biopsied from the embryos and then frozen. Afterwards, the
expression of EGA-related genes in embryos was assayed using quantitative reverse transcriptase-polymerase chain
reaction (PCR).
Results The in vitro study showed reduced quality of embryos. No significant difference was found between embryo
quality scores for the two groups (P=0.754). The in vitro group exhibited a relatively reduced expression of the EGA-
related genes, when compared to the in vivo group (all of them showed P=0.0001).
Conclusion Although displaying the normal morphology, the IVM process appeared to have a negative influence on
developmental gene expression levels of human preimplanted embryos. Based on our results, the embryo normal
morphology cannot be considered as an ideal scale for the successful growth of embryo at implantation and downstream
processes.
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Affiliation(s)
- Parvin Dorfeshan
- Department of Biology and Anatomical Sciences, Faculty of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Marefat Ghaffari Novin
- Department of Biology and Anatomical Sciences, Faculty of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran.,Infertility and Reproductive Health Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran. Electronic Address:
| | - Mohammad Salehi
- Cellular and Molecular Biology Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran.,Department of Biotechnology, School of Advanced Technologies in Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Reza Masteri Farahani
- Department of Biology and Anatomical Sciences, Faculty of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Fatemeh Fadaei-Fathabadi
- Department of Biology and Anatomical Sciences, Faculty of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Ronak Sehatti
- Infertility and Reproductive Health Research Center, Aban Hospital, Tehran, Iran
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Luciano AM, Sirard MA. Successful in vitro maturation of oocytes: a matter of follicular differentiation. Biol Reprod 2017; 98:162-169. [DOI: 10.1093/biolre/iox149] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2017] [Accepted: 11/17/2017] [Indexed: 01/08/2023] Open
Affiliation(s)
- Alberto Maria Luciano
- Reproductive and Developmental Biology Laboratory, Department of Health, Animal Sciences and Food Safety, University of Milan, Milan, Italy
| | - Marc-André Sirard
- Centre de Recherche en reproduction, Développement et Santé Intergénérationnelle, Département des Sciences Animales, Université Laval, Québec, Québec, Canada
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Effect of GOLPH3 on cumulus granulosa cell apoptosis and ICSI pregnancy outcomes. Sci Rep 2017; 7:7863. [PMID: 28801637 PMCID: PMC5554214 DOI: 10.1038/s41598-017-08343-w] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2017] [Accepted: 07/11/2017] [Indexed: 11/08/2022] Open
Abstract
Previous studies have shown that GOLPH3 mediates cell growth, proliferation and differentiation and inhibits cell apoptosis; however, the role of GOLPH3 in cumulus granulosa cells and the value of GOLPH3 in predicting ICSI pregnancy outcomes remain unknown until now. Our findings showed higher positive expression rate, score of staining intensity, and immunohistochemical score of GOLPH3 in the cumulus granulosa cells of the pregnant women relative to non-pregnant women, and a higher apoptotic rate of cumulus granulosa cells was detected in non-pregnant women than in pregnant women. Pearson correlation analyses revealed that pregnancy correlated negatively with GOLPH3 expression and apoptosis of cumulus granulosa cells, and positively with the number of follicles punctured, number of grade III oocytes, number of eggs retrieved for ICSI, number of zygotes, number of cleavage-stage embryos, number of top-quality embryos, number of blastocysts, number of top-quality blastocysts, and number of frozen embryos. GOLPH3 may be involved in the apoptosis of cumulus granulosa cells, which may correlate with oocyte maturation and egg development. GOLPH3 expression in cumulus granulosa cells may facilitate the selection of top-quality eggs and embryos, the prediction of the clinical pregnancy outcomes of ICSI, and the increase of the pregnancy rate.
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Gil MA, Nohalez A, Martinez CA, Ake-Villanueva JR, Centurion-Castro F, Maside C, Cuello C, Roca J, Parrilla I, Martinez EA. Effects of meiotic inhibitors and gonadotrophins on porcine oocytes in vitro maturation, fertilization and development. Reprod Domest Anim 2017; 52:873-880. [PMID: 28543962 DOI: 10.1111/rda.12993] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2017] [Accepted: 04/07/2017] [Indexed: 01/06/2023]
Abstract
This study evaluated the effect of three reversible meiotic inhibitors (MINs) and their interaction with gonadotrophins (Gns) on the meiotic maturation and developmental competence of porcine oocytes. In experiment 1, the oocytes were matured for 22 hr in the presence or absence of dbcAMP (1 mM), cycloheximide (7 μM) or cilostamide (20 μM) with or without Gns, and for an additional 22 hr in the absence of MINs and Gns. At 22 hr of maturation, regardless of the presence of Gns, a higher proportion (p < .001) of oocytes cultured in the presence of MINs were effectively arrested at the germinal vesicle stage compared with the oocytes cultured without MINs. At 44 hr of maturation, the proportion of oocytes that reached MII was higher (p < .05) in groups with Gns compared with groups without Gns. In experiment 2, oocytes that were matured as in experiment 1 were inseminated and cultured for 7 days to evaluate fertilization parameters and blastocyst formation. Only oocytes from the dbcAMP + Gns group had higher (p < .05) efficiency of fertilization compared with the other treatment groups. The presence of dbcAMP during maturation also increased (p < .05) blastocyst formation and efficiency of blastocyst formation in both the presence and absence of Gns. These results indicate that the interaction of Gns with the tested MINs improved meiotic progression. In addition, regardless of supplementation with Gns, the presence of dbcAMP during the first maturation period increased and even doubled the capacity of oocytes to develop to the blastocyst stage.
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Affiliation(s)
- M A Gil
- Department Animal Medicine and Surgery, University of Murcia, Murcia, Spain
| | - A Nohalez
- Department Animal Medicine and Surgery, University of Murcia, Murcia, Spain
| | - C A Martinez
- Department Animal Medicine and Surgery, University of Murcia, Murcia, Spain
| | - J R Ake-Villanueva
- Department Animal Reproduction and Genetic Improvement, Autonomous University of Yucatán, Mérida, Mexico
| | - F Centurion-Castro
- Department Animal Reproduction and Genetic Improvement, Autonomous University of Yucatán, Mérida, Mexico
| | - C Maside
- Department Animal Medicine and Surgery, University of Murcia, Murcia, Spain
| | - C Cuello
- Department Animal Medicine and Surgery, University of Murcia, Murcia, Spain
| | - J Roca
- Department Animal Medicine and Surgery, University of Murcia, Murcia, Spain
| | - I Parrilla
- Department Animal Medicine and Surgery, University of Murcia, Murcia, Spain
| | - E A Martinez
- Department Animal Medicine and Surgery, University of Murcia, Murcia, Spain
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Bertoldo MJ, Locatelli Y, O'Neill C, Mermillod P. Impacts of and interactions between environmental stress and epigenetic programming during early embryo development. Reprod Fertil Dev 2017; 27:1125-36. [PMID: 24965854 DOI: 10.1071/rd14049] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2014] [Accepted: 03/31/2014] [Indexed: 01/24/2023] Open
Abstract
The processes of assisted reproductive technologies (ART) involve a variety of interventions that impact on the oocyte and embryo. Critically, these interventions cause considerable stress and coincide with important imprinting events throughout gametogenesis, fertilisation and early embryonic development. It is now accepted that the IVM and in vitro development of gametes and embryos can perturb the natural course of development to varying degrees of severity. Altered gene expression and, more recently, imprinting disorders relating to ART have become a focused area of research. Although various hypotheses have been put forward, most research has been observational, with little attempt to discover the mechanisms and periods of sensitivity during embryo development that are influenced by the culture conditions following fertilisation. The embryo possesses innate survival factor signalling pathways, yet when an embryo is placed in culture, this signalling in response to in vitro stress becomes critically important in mitigating the effects of stresses caused by the in vitro environment. It is apparent that not all embryos possess this ability to adequately adapt to the stresses experienced in vitro, most probably due to an inadequate oocyte. It is speculated that it is important that embryos use their survival signalling mechanisms to maintain normal epigenetic programming. The seeming redundancy in the function of various survival signalling pathways would support this notion. Any invasion into the natural, highly orchestrated and dynamic process of sexual reproduction could perturb the normal progression of epigenetic programming. Therefore the source of gametes and the subsequent culture conditions of gametes and embryos are critically important and require careful attention. It is the aim of this review to highlight avenues of research to elucidate the effects of stress and the relationship with epigenetic programming. The short- and long-term health and viability of human and animal embryos derived in vitro will also be discussed.
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Affiliation(s)
- Michael J Bertoldo
- Institut National de la Recherche Agronomique (INRA), UMR85 Physiologie de la Reproduction et des Comportements, F-37380 Nouzilly, France
| | - Yann Locatelli
- Institut National de la Recherche Agronomique (INRA), UMR85 Physiologie de la Reproduction et des Comportements, F-37380 Nouzilly, France
| | - Christopher O'Neill
- Centre for Developmental and Regenerative Medicine, Kolling Institute for Medical Research, Sydney Medical School, University of Sydney, NSW 2065, Australia
| | - Pascal Mermillod
- Institut National de la Recherche Agronomique (INRA), UMR85 Physiologie de la Reproduction et des Comportements, F-37380 Nouzilly, France
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Cervantes MP, Palomino JM, Anzar M, Mapletoft RJ, Mastromonaco GF, Adams GP. In vitro embryo production in wood bison (Bison bison athabascae) using in vivo matured cumulus-oocyte complexes. Theriogenology 2017; 89:122-130. [DOI: 10.1016/j.theriogenology.2016.10.017] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2016] [Revised: 10/14/2016] [Accepted: 10/16/2016] [Indexed: 11/30/2022]
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Recipient of the 2017 IETS Pioneer Award: Prof. Dr. Heiner Niemann. Reprod Fertil Dev 2017. [DOI: 10.1071/rdv29n1_pa] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
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H. Abd El- A, E. Mahrous U, Z. Kamel S, A. Sabek A. Factors Influencing in vitro Production of Bovine Embryos: A Review. ASIAN JOURNAL OF ANIMAL AND VETERINARY ADVANCES 2016; 11:737-756. [DOI: 10.3923/ajava.2016.737.756] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/01/2023]
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Li QY, Lou J, Yang XG, Lu YQ, Lu SS, Lu KH. Effect of the meiotic inhibitor cilostamide on resumption of meiosis and cytoskeletal distribution in buffalo oocytes. Anim Reprod Sci 2016; 174:37-44. [DOI: 10.1016/j.anireprosci.2016.09.003] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2016] [Revised: 09/01/2016] [Accepted: 09/05/2016] [Indexed: 10/21/2022]
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Melo EO, Cordeiro DM, Pellegrino R, Wei Z, Daye ZJ, Nishimura RC, Dode MAN. Identification of molecular markers for oocyte competence in bovine cumulus cells. Anim Genet 2016; 48:19-29. [PMID: 27650317 DOI: 10.1111/age.12496] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/18/2016] [Indexed: 12/17/2022]
Abstract
Cumulus cells (CCs) have an important role during oocyte growth, competence acquisition, maturation, ovulation and fertilization. In an attempt to isolate potential biomarkers for bovine in vitro fertilization, we identified genes differentially expressed in bovine CCs from oocytes with different competence statuses, through microarray analysis. The model of follicle size, in which competent cumulus-oocyte complexes (COCs) were recovered from bigger follicles (≥8.0 mm in diameter) and less competent ones from smaller follicles (1-3 mm), was used. We identified 4178 genes that were differentially expressed (P < 0.05) in the two categories of CCs. The list was further enriched, through the use of a 2.5-fold change in gene expression as a cutoff value, to include 143 up-regulated and 80 down-regulated genes in CCs of competent COCs compared to incompetent COCs. These genes were screened according to their cellular roles, most of which were related to cell cycle, DNA repair, energy metabolism, metabolism of amino acids, cell signaling, meiosis, ovulation and inflammation. Three candidate genes up-regulated (FGF11, IGFBP4, SPRY1) and three down-regulated (ARHGAP22, COL18A1 and GPC4) in CCs from COCs of big follicles (≥8.1 mm) were selected for qPCR analysis. The selected genes showed the same expression patterns by qPCR and microarray analysis. These genes may be potential genetic markers that predict oocyte competence in in vitro fertilization routines.
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Affiliation(s)
- E O Melo
- Embrapa- Genetic Resources and Biotechnology, Brasília, DF, 70770-917, Brazil
| | - D M Cordeiro
- School of Agriculture and Veterinary Medicine, University of Brasilia, Brasília, DF, 70910-900, Brazil
| | - R Pellegrino
- Center for Applied Genomics, The Children's Hospital of Philadelphia, Philadelphia, PA, 19104, USA
| | - Z Wei
- Department of Computer Science, New Jersey Institute of Technology, Newark, NJ, 07102, USA
| | - Z J Daye
- Division of Epidemiology and Biostatistics, University of Arizona, Tucson, AZ, 85721, USA
| | - R C Nishimura
- School of Agriculture and Veterinary Medicine, University of Brasilia, Brasília, DF, 70910-900, Brazil
| | - M A N Dode
- Embrapa- Genetic Resources and Biotechnology, Brasília, DF, 70770-917, Brazil
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Cervantes MP, Palomino JM, Anzar M, Mapletoft RJ, Adams GP. In vivo and in vitro maturation of oocytes collected from superstimulated wood bison (Bison bison athabascae) during the anovulatory and ovulatory seasons. Anim Reprod Sci 2016; 173:87-96. [PMID: 27601321 DOI: 10.1016/j.anireprosci.2016.09.001] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2016] [Revised: 08/29/2016] [Accepted: 09/01/2016] [Indexed: 01/21/2023]
Abstract
Experiments were done to compare the in vivo and in vitro maturational characteristics of cumulus-oocyte complexes (COC) collected from live wood bison. In Experiment 1 (anovulatory season), follicular ablation was done to synchronize follicle wave emergence among bison on Day -1, and FSH was given on Days 0 and 2. Bison were then assigned to 5 groups (n=5/group) in which COC were collected by transvaginal follicle aspiration on Day 4 and either fixed immediately with no maturation (control), matured in vitro for 24 or 30h, or collected on Day 5 after in vivo maturation for 24 or 30h (i.e., after hCG treatment). In Experiment 2 (ovulatory season), bison were treated as described for Experiment 1, but PGF2α (cloprostenol) was given to control the luteal phase on Days -9 and 3. In both experiments, cumulus cell expansion was more extensive following in vivo than in vitro maturation, and the percentage of fully expanded COC was highest in the in vivo 30h groups. Nuclear maturation occurred more rapidly in vitro; 60-70% of oocytes were at the MII stage 24h after in vitro maturation while only 25-27% of oocytes had reached the MII stage after 24h of in vivo maturation. In conclusion, nuclear maturation occurred more rapidly during in vitro vs. in vivo maturation, but was associated with less cumulus expansion than in vivo maturation. In vivo oocyte maturation was more complete at 30 vs. 24h after hCG treatment. Season had no effect on the maturational capacity of wood bison oocytes.
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Affiliation(s)
- Miriam P Cervantes
- Department of Veterinary Biomedical Sciences, University of Saskatchewan, Saskatoon, Canada
| | - J Manuel Palomino
- Department of Veterinary Biomedical Sciences, University of Saskatchewan, Saskatoon, Canada
| | - Muhammad Anzar
- Agriculture and Agri-Food Canada, Saskatoon Research and Development Center, Saskatoon, Canada
| | - Reuben J Mapletoft
- Department of Large Animal Clinical Sciences, University of Saskatchewan, Saskatoon, Canada
| | - Gregg P Adams
- Department of Veterinary Biomedical Sciences, University of Saskatchewan, Saskatoon, Canada.
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Rodrigues-Cunha MC, Mesquita LG, Bressan F, Collado MD, Balieiro JCC, Schwarz KRL, de Castro FC, Watanabe OY, Watanabe YF, de Alencar Coelho L, Leal CLV. Effects of melatonin during IVM in defined medium on oocyte meiosis, oxidative stress, and subsequent embryo development. Theriogenology 2016; 86:1685-94. [PMID: 27471183 DOI: 10.1016/j.theriogenology.2016.05.026] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2015] [Revised: 05/02/2016] [Accepted: 05/20/2016] [Indexed: 01/25/2023]
Abstract
Melatonin may have beneficial effects when used in oocyte maturation and embryo development culture. The effect of melatonin during IVM on meiosis resumption and progression in bovine oocytes and on expression of antioxidant enzymes, nuclear fragmentation and free radicals, as well as on embryo development were assessed. Cumulus-oocyte complexes were matured in vitro with melatonin (10(-9) and 10(-6) M), FSH (positive control), or without hormones (negative control) in defined medium. Maturation rates were evaluated at 6, 12, 18, and 24 hours. Transcripts for antioxidant enzymes (CuZnSOD, MnSOD, and glutathione peroxidase 4 (GPX4)) in oocytes and cumulus cells, nuclear fragmentation in cumulus cells (TUNEL) and reactive oxygen species levels in oocytes (carboxy-H2 difluorofluorescein diacetate) were determined at 24 hours IVM. Effect of treatments on embryo development was determined after in vitro fertilization and culture. At 12 hours, meiosis resumption rates in FSH and melatonin-treated groups were similar (69.6%-81.8%, P > 0.05). At 24 hours, most oocytes were in metaphase II, with FSH showing highest rates (90.0%, P < 0.05) compared with the other groups (51.6%-69.1%, P > 0.05). In cumulus cells, MnSOD expression was higher in FSH group (P < 0.05) whereas Cu,ZnSOD transcripts were more abundant in melatonin group (10(-6)M; P < 0.05). Nuclear fragmentation in cumulus cells was highest in controls (37.4%/10,000 cells; P < 0.05) and lower in FSH and 10(-6)M melatonin (29.4% and 25.6%/10,000 cells, respectively). Reactive oxygen species levels were lower in oocytes matured with 10(-6)M melatonin than in control and FSH groups (P < 0.05). Embryo development from oocytes matured only with melatonin was similar to those matured in complete medium (P > 0.05). In conclusion, although melatonin during IVM in a defined medium does not stimulate nuclear maturation progression it does stimulate meiosis resumption and such treated oocytes support subsequent embryo development. Melatonin also shows cytoprotective effects on cumulus-oocyte complexes.
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Affiliation(s)
| | - Lígia G Mesquita
- Departamento de Nutrição e Produção Animal, Faculdade de Medicina Veterinária e Zootecnia-USP, Pirassununga-SP, Brazil
| | - Fabiana Bressan
- Departamento de Medicina Veterinária, Faculdade de Zootecnia e Engenharia de Alimentos-USP, Pirassununga-SP, Brazil
| | - Maite Del Collado
- Departamento de Medicina Veterinária, Faculdade de Zootecnia e Engenharia de Alimentos-USP, Pirassununga-SP, Brazil
| | - Júlio C C Balieiro
- Departamento de Nutrição e Produção Animal, Faculdade de Medicina Veterinária e Zootecnia-USP, Pirassununga-SP, Brazil
| | - Kátia R L Schwarz
- Departamento de Medicina Veterinária, Faculdade de Zootecnia e Engenharia de Alimentos-USP, Pirassununga-SP, Brazil
| | - Fernanda C de Castro
- Departamento de Medicina Veterinária, Faculdade de Zootecnia e Engenharia de Alimentos-USP, Pirassununga-SP, Brazil
| | | | | | - Lia de Alencar Coelho
- Departamento de Medicina Veterinária, Faculdade de Zootecnia e Engenharia de Alimentos-USP, Pirassununga-SP, Brazil
| | - Cláudia L V Leal
- Departamento de Medicina Veterinária, Faculdade de Zootecnia e Engenharia de Alimentos-USP, Pirassununga-SP, Brazil.
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Brasil O, Moreira N, Santos G, Silva B, Mariante A, Ramos A. Superovulatory and embryo yielding in sheep using increased exposure time to progesterone associated with a GnRH agonist. Small Rumin Res 2016. [DOI: 10.1016/j.smallrumres.2016.01.005] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Vieira L, Rodrigues C, Castro Netto A, Guerreiro B, Silveira C, Freitas B, Bragança L, Marques K, Sá Filho M, Bó G, Mapletoft R, Baruselli P. Efficacy of a single intramuscular injection of porcine FSH in hyaluronan prior to ovum pick-up in Holstein cattle. Theriogenology 2016; 85:877-886. [DOI: 10.1016/j.theriogenology.2015.10.036] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2015] [Revised: 10/14/2015] [Accepted: 10/28/2015] [Indexed: 11/26/2022]
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Affiliation(s)
- Patrick Lonergan
- School of Agriculture and Food Science, University College Dublin, Belfield, Dublin 4, Ireland;
| | - Trudee Fair
- School of Agriculture and Food Science, University College Dublin, Belfield, Dublin 4, Ireland;
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Zavareh S, Karimi I, Salehnia M, Rahnama A. Effect of In Vitro Maturation Technique and Alpha Lipoic Acid Supplementation on Oocyte Maturation Rate: Focus on Oxidative Status of Oocytes. INTERNATIONAL JOURNAL OF FERTILITY & STERILITY 2015; 9:442-51. [PMID: 26985332 PMCID: PMC4793165 DOI: 10.22074/ijfs.2015.4601] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/29/2014] [Accepted: 10/10/2014] [Indexed: 11/09/2022]
Abstract
Background Therapeutic potential of in vitro maturation (IVM) in infertility is growing with great promise. Although significant progress is obtained in recent years, existing
IVM protocols are far from favorable results. The first aim of this study was to investigate whether two step IVM manner change reactive oxygen species (ROS) and total anti-
oxidant capacity (TAC) levels. The second aim was to find the effect of alpha lipoic acid
(ALA) supplementation on oocyte maturation rate and on ROS/TAC levels during IVM. Materials and Methods In this experimental study, mouse germinal vesicle (GV) oocytes
divided into cumulus denuded oocytes (DOs) and cumulus oocyte complexes (COCs) groups.
GVs were matured in vitro in the presence or absence of ALA only for 18 hours (control) or
with pre-culture of forskolin plus cilostamide for an additional 18 hours. Matured oocytes obtained following 18 and 36 hours based on experimental design. In parallel, the ROS and TAC
levels were measured at different time (0, 18 and 36 hours) by 2',7'-dichlorodihydrofluorescein
(DCFH) probe and ferric reducing/antioxidant power (FRAP) assay, respectively. Results Maturation rate of COCs was significantly higher than DOs in control group
(P<0.05), while there was no significant difference between COCs and DOs when were
pre-cultured with forskolin plus cilostamide. ROS and TAC levels was increased and decreased respectively in DOs after 18 hours while in COCs did not change at 18 hours and
showed a significant increase and decrease respectively at 36 hours (P<0.05). ROS and
TAC levels in the presence of ALA were significantly decreased and increased respectively after 36 hours (P<0.05) whereas, maturation rates of COCs and DOs were similar
to their corresponding control groups. Conclusion ALA decreased ROS and increased TAC but could not affect maturation rate
of both COCs and DOs in one or two step IVM manner.
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Affiliation(s)
- Saeed Zavareh
- School of Biology, Damghan University, Damghan, Iran; Institute of Biological Sciences, Damghan University, Damghan, Iran
| | - Isaac Karimi
- Laboratory of Molecular and Cellular Biology, Department of Basic Veterinary Sciences, School of Veterinary Medicine, Razi University, Kermanshah, Iran
| | - Mojdeh Salehnia
- Department of Anatomy, Faculty of Medical Sciences, Tarbiat Modares University, Tehran, Iran
| | - Ali Rahnama
- School of Biology, Damghan University, Damghan, Iran
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Mendonça ADS, Guimarães ALS, da Silva NMA, Caetano AR, Dode MAN, Franco MM. Characterization of the IGF2 Imprinted Gene Methylation Status in Bovine Oocytes during Folliculogenesis. PLoS One 2015; 10:e0142072. [PMID: 26517264 PMCID: PMC4627647 DOI: 10.1371/journal.pone.0142072] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2015] [Accepted: 10/17/2015] [Indexed: 02/07/2023] Open
Abstract
DNA methylation reprogramming occurs during mammalian gametogenesis and embryogenesis. Sex-specific DNA methylation patterns at specific CpG islands controlling imprinted genes are acquired during this window of development. Characterization of the DNA methylation dynamics of imprinted genes acquired by oocytes during folliculogenesis is essential for understanding the physiological and genetic aspects of female gametogenesis and to determine the parameters for oocyte competence. This knowledge can be used to improve in vitro embryo production (IVP), specifically because oocyte competence is one of the most important aspects determining the success of IVP. Imprinted genes, such as IGF2, play important roles in embryo development, placentation and fetal growth. The aim of this study was to characterize the DNA methylation profile of the CpG island located in IGF2 exon 10 in oocytes during bovine folliculogenesis. The methylation percentages in oocytes from primordial follicles, final secondary follicles, small antral follicles, large antral follicles, MII oocytes and spermatozoa were 73.74 ± 2.88%, 58.70 ± 7.46%, 56.00 ± 5.58%, 65.77 ± 5.10%, 56.35 ± 7.45% and 96.04 ± 0.78%, respectively. Oocytes from primordial follicles showed fewer hypomethylated alleles (15.5%) than MII oocytes (34.6%) (p = 0.039); spermatozoa showed only hypermethylated alleles. Moreover, MII oocytes were less methylated than spermatozoa (p<0.001). Our results showed that the methylation pattern of this region behaves differently between mature oocytes and spermatozoa. However, while this region has a classical imprinted pattern in spermatozoa that is fully methylated, it was variable in mature oocytes, showing hypermethylated and hypomethylated alleles. Furthermore, our results suggest that this CpG island may have received precocious reprogramming, considering that the hypermethylated pattern was already found in growing oocytes from primordial follicles. These results may contribute to our understanding of the reprogramming of imprinted genes during bovine oogenesis.
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Affiliation(s)
- Anelise dos Santos Mendonça
- Laboratory of Animal Reproduction, Embrapa Genetic Resources and Biotechnology, Brasília, Distrito Federal, Brazil
- Institute of Genetics and Biochemistry, Federal University of Uberlândia, Uberlândia, Minas Gerais, Brazil
| | - Ana Luíza Silva Guimarães
- Laboratory of Animal Reproduction, Embrapa Genetic Resources and Biotechnology, Brasília, Distrito Federal, Brazil
- School of Agriculture and Veterinary Medicine, University of Brasília, Brasília, Distrito Federal, Brazil
| | | | | | - Margot Alves Nunes Dode
- Laboratory of Animal Reproduction, Embrapa Genetic Resources and Biotechnology, Brasília, Distrito Federal, Brazil
- School of Agriculture and Veterinary Medicine, University of Brasília, Brasília, Distrito Federal, Brazil
| | - Maurício Machaim Franco
- Laboratory of Animal Reproduction, Embrapa Genetic Resources and Biotechnology, Brasília, Distrito Federal, Brazil
- Institute of Genetics and Biochemistry, Federal University of Uberlândia, Uberlândia, Minas Gerais, Brazil
- School of Veterinary Medicine, Federal University of Uberlândia, Uberlândia, Minas Gerais, Brazil
- * E-mail:
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Romão R, Bettencourt E, Pereira RMLN, Marques CC, Baptista MC, Barbas JP, Oliveira E, Bettencourt C, Sousa M. Ultrastructural Characterization of Fresh and Vitrified In Vitro- and In Vivo-Produced Sheep Embryos. Anat Histol Embryol 2015; 45:231-9. [PMID: 27144917 DOI: 10.1111/ahe.12191] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2015] [Accepted: 06/28/2015] [Indexed: 11/29/2022]
Abstract
The lower results in cryopreservation of in vitro-produced (IVP) sheep embryos, when compared to the in vivo derived, limits its use. Four groups of blastocyst (BL) were evaluated: fresh IVP (n = 3), fresh in vivo derived (n = 3), warmed IVP cryopreserved in open pulled straws (OPS, n = 3) and warmed in vivo derived cryopreserved in OPS (n = 3). Ultrastructural observation of processed fresh embryos showed a reduced number of microvilli and mitochondria in the IVP ones, as well as a lower number of mature mitochondria, that can be associated with deficient metabolism in IVP embryos, possibly involved in the lower resistance to cryopreservation. Both in vivo-derived and IVP embryos had a large number of vesicles, with light and dense content. In embryos vitrified by OPS, major changes were observed mainly in IVP embryos with small changes in grade 2 (fair) and high changes in grade 3 (bad) semithin scoring. The main changes associated with cryopreservation included disruption of cellular membranes and poor intracellular preservation, with loss of microvilli and the presence of cellular debris. In conclusion, ultrastructural evaluation of IVP blastocysts cryopreserved in OPS was herein described for the first time, reporting more severe cellular damage in these embryos when compared to those produced in vivo. This is probably associated with a lower cryotolerance that can be related to their lipid content and metabolism.
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Affiliation(s)
- R Romão
- Escola de Ciências e Tecnologia, 'ICAAM - Instituto de Ciências Agrárias e Ambientais Mediterrânicas', Núcleo da Mitra, Universidade de Évora, Ap. 94, 7002, Évora, Portugal.,Unidade de Recursos Genéticos, Reprodução e Melhoramento Animal, INIAV IP, L INIA-Santarém, Quinta da Fonte Boa, 2005-048, Vale de Santarém, Portugal
| | - E Bettencourt
- Escola de Ciências e Tecnologia, 'ICAAM - Instituto de Ciências Agrárias e Ambientais Mediterrânicas', Núcleo da Mitra, Universidade de Évora, Ap. 94, 7002, Évora, Portugal
| | - R M L N Pereira
- Unidade de Recursos Genéticos, Reprodução e Melhoramento Animal, INIAV IP, L INIA-Santarém, Quinta da Fonte Boa, 2005-048, Vale de Santarém, Portugal.,Mosteiro de S. Jorge de Milréu, Escola Universitária Vasco da Gama, Estrada da Conraria, 3040-714 Castelo Viegas, Coimbra, Portugal.,CIISA, Faculdade de Medicina Veterinária, Universidade de Lisboa Avenida da Universidade Técnica, 1300-477, Lisboa, Portugal
| | - C C Marques
- Unidade de Recursos Genéticos, Reprodução e Melhoramento Animal, INIAV IP, L INIA-Santarém, Quinta da Fonte Boa, 2005-048, Vale de Santarém, Portugal
| | - M C Baptista
- Unidade de Recursos Genéticos, Reprodução e Melhoramento Animal, INIAV IP, L INIA-Santarém, Quinta da Fonte Boa, 2005-048, Vale de Santarém, Portugal
| | - J P Barbas
- Unidade de Recursos Genéticos, Reprodução e Melhoramento Animal, INIAV IP, L INIA-Santarém, Quinta da Fonte Boa, 2005-048, Vale de Santarém, Portugal.,CIISA, Faculdade de Medicina Veterinária, Universidade de Lisboa Avenida da Universidade Técnica, 1300-477, Lisboa, Portugal
| | - E Oliveira
- Department of Microscopy, Laboratory of Cell Biology, Multidisciplinary Unit for Biomedical Research-UMIB, Institute of Biomedical Sciences Abel Salazar (ICBAS), University of Porto, 4050-313, Porto, Portugal
| | - C Bettencourt
- Regional Agriculture Direction of Alentejo (DRAAL), Herdade da Abóbada, 7830-908, V.N.S. Bento, Portugal
| | - M Sousa
- Department of Microscopy, Laboratory of Cell Biology, Multidisciplinary Unit for Biomedical Research-UMIB, Institute of Biomedical Sciences Abel Salazar (ICBAS), University of Porto, 4050-313, Porto, Portugal
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Romão R, Marques C, Baptista M, Barbas J, Horta A, Carolino N, Bettencourt E, Pereira R. Cryopreservation of in vitro–produced sheep embryos: Effects of different protocols of lipid reduction. Theriogenology 2015; 84:118-26. [DOI: 10.1016/j.theriogenology.2015.02.019] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2014] [Revised: 02/21/2015] [Accepted: 02/22/2015] [Indexed: 01/28/2023]
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Sprícigo JFW, Diógenes MN, Leme LO, Guimarães AL, Muterlle CV, Silva BDM, Solà-Oriol D, Pivato I, Silva LP, Dode MAN. Effects of Different Maturation Systems on Bovine Oocyte Quality, Plasma Membrane Phospholipid Composition and Resistance to Vitrification and Warming. PLoS One 2015; 10:e0130164. [PMID: 26107169 PMCID: PMC4480852 DOI: 10.1371/journal.pone.0130164] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2014] [Accepted: 05/18/2015] [Indexed: 11/19/2022] Open
Abstract
The objective of this study was to evaluate the effects of different maturation systems on oocyte resistance after vitrification and on the phospholipid profile of the oocyte plasma membrane (PM). Four different maturation systems were tested: 1) in vitro maturation using immature oocytes aspirated from slaughterhouse ovaries (CONT; n = 136); 2) in vitro maturation using immature oocytes obtained by ovum pick-up (OPU) from unstimulated heifers (IMA; n = 433); 3) in vitro maturation using immature oocytes obtained by OPU from stimulated heifers (FSH; n = 444); and 4) in vivo maturation using oocytes obtained from heifers stimulated 24 hours prior by an injection of GnRH (MII; n = 658). A sample of matured oocytes from each fresh group was analyzed by matrix associated laser desorption-ionization (MALDI-TOF) to determine their PM composition. Then, half of the matured oocytes from each group were vitrified/warmed (CONT VIT, IMA VIT, FSH VIT and MII VIT), while the other half were used as fresh controls. Afterwards, the eight groups underwent IVF and IVC, and blastocyst development was assessed at D2, D7 and D8. A chi-square test was used to compare embryo development between the groups. Corresponding phospholipid ion intensity was expressed in arbitrary units, and following principal components analyses (PCA) the data were distributed on a 3D graph. Oocytes obtained from superstimulated animals showed a greater rate of developmental (P<0.05) at D7 (MII = 62.4±17.5% and FSH = 58.8±16.1%) compared to those obtained from unstimulated animals (CONT = 37.9±8.5% and IMA = 50.6±14.4%). However, the maturation system did not affect the resistance of oocytes to vitrification because the blastocyst rate at D7 was similar (P>0.05) for all groups (CONT VIT = 2.8±3.5%, IMA VIT = 2.9±4.0%, FSH VIT = 4.3±7.2% and MII VIT = 3.6±7.2%). MALDI-TOF revealed that oocytes from all maturation groups had similar phospholipid contents, except for 760.6 ([PC (34:1) + H]+), which was more highly expressed in MII compared to FSH (P<0.05). The results suggest that although maturation systems improve embryonic development, they do not change the PM composition nor the resistance of bovine oocytes to vitrification.
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Affiliation(s)
- José F. W. Sprícigo
- School of Agriculture and Veterinary Medicine, University of Brasilia, Brasília-DF, Brazil
| | - Mateus N. Diógenes
- School of Agriculture and Veterinary Medicine, University of Brasilia, Brasília-DF, Brazil
| | - Ligiane O. Leme
- School of Agriculture and Veterinary Medicine, University of Brasilia, Brasília-DF, Brazil
| | - Ana L. Guimarães
- School of Agriculture and Veterinary Medicine, University of Brasilia, Brasília-DF, Brazil
| | - Carolle V. Muterlle
- School of Agriculture and Veterinary Medicine, University of Brasilia, Brasília-DF, Brazil
| | | | - David Solà-Oriol
- Servei de Nutrició i Benestar Animal (SNiBA), Departament de Ciència Animal i dels Aliments, Universitat Autònoma de Barcelona, 08193, Bellaterra, Spain
| | - Ivo Pivato
- School of Agriculture and Veterinary Medicine, University of Brasilia, Brasília-DF, Brazil
| | - Luciano Paulino Silva
- Embrapa Genetic Resources and Biotechnology, Laboratory of Animal Reproduction, Brasília- DF, Brazil
| | - Margot A. N. Dode
- School of Agriculture and Veterinary Medicine, University of Brasilia, Brasília-DF, Brazil
- Embrapa Genetic Resources and Biotechnology, Laboratory of Animal Reproduction, Brasília- DF, Brazil
- * E-mail:
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