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Huang R, Kratka CE, Pea J, McCann C, Nelson J, Bryan JP, Zhou LT, Russo DD, Zaniker EJ, Gandhi AH, Shalek AK, Cleary B, Farhi SL, Duncan FE, Goods BA. Single-cell and spatiotemporal profile of ovulation in the mouse ovary. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2024.05.20.594719. [PMID: 38826447 PMCID: PMC11142086 DOI: 10.1101/2024.05.20.594719] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2024]
Abstract
Ovulation is a spatiotemporally coordinated process that involves several tightly controlled events, including oocyte meiotic maturation, cumulus expansion, follicle wall rupture and repair, and ovarian stroma remodeling. To date, no studies have detailed the precise window of ovulation at single-cell resolution. Here, we performed parallel single-cell RNA-seq and spatial transcriptomics on paired mouse ovaries across an ovulation time course to map the spatiotemporal profile of ovarian cell types. We show that major ovarian cell types exhibit time-dependent transcriptional states enriched for distinct functions and have specific localization profiles within the ovary. We also identified gene markers for ovulation-dependent cell states and validated these using orthogonal methods. Finally, we performed cell-cell interaction analyses to identify ligand-receptor pairs that may drive ovulation, revealing previously unappreciated interactions. Taken together, our data provides a rich and comprehensive resource of murine ovulation that can be mined for discovery by the scientific community.
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Lounas A, Breton Y, Lebrun A, Laflamme I, Vernoux N, Savage J, Tremblay MÈ, Pelletier M, Germain M, Richard FJ. The follicle-stimulating hormone triggers rapid changes in mitochondrial structure and function in porcine cumulus cells. Sci Rep 2024; 14:436. [PMID: 38172520 PMCID: PMC10764925 DOI: 10.1038/s41598-023-50586-3] [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: 08/28/2023] [Accepted: 12/21/2023] [Indexed: 01/05/2024] Open
Abstract
Oocyte maturation is a key process during which the female germ cell undergoes resumption of meiosis and completes its preparation for embryonic development including cytoplasmic and epigenetic maturation. The cumulus cells directly surrounding the oocyte are involved in this process by transferring essential metabolites, such as pyruvate, to the oocyte. This process is controlled by cyclic adenosine monophosphate (cAMP)-dependent mechanisms recruited downstream of follicle-stimulating hormone (FSH) signaling in cumulus cells. As mitochondria have a critical but poorly understood contribution to this process, we defined the effects of FSH and high cAMP concentrations on mitochondrial dynamics and function in porcine cumulus cells. During in vitro maturation (IVM) of cumulus-oocyte complexes (COCs), we observed an FSH-dependent mitochondrial elongation shortly after stimulation that led to mitochondrial fragmentation 24 h later. Importantly, mitochondrial elongation was accompanied by decreased mitochondrial activity and a switch to glycolysis. During a pre-IVM culture step increasing intracellular cAMP, mitochondrial fragmentation was prevented. Altogether, the results demonstrate that FSH triggers rapid changes in mitochondrial structure and function in COCs involving cAMP.
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Affiliation(s)
- Amel Lounas
- Centre de recherche en reproduction, développement et santé intergénérationnelle (CRDSI), Département des sciences animales, Faculté des Sciences de l'agriculture et de l'alimentation, Université Laval, Québec, QC, G1V 0A6, Canada
| | - Yann Breton
- Centre de recherche du CHU de Québec-Université Laval, Axe Maladies infectieuses et immunitaires, Département de microbiologie-infectiologie et d'immunologie, Faculté de médecine, Université Laval, Québec, QC, G1V4G2, Canada
| | - Ariane Lebrun
- Centre de recherche en reproduction, développement et santé intergénérationnelle (CRDSI), Département des sciences animales, Faculté des Sciences de l'agriculture et de l'alimentation, Université Laval, Québec, QC, G1V 0A6, Canada
| | - Isabelle Laflamme
- Centre de recherche en reproduction, développement et santé intergénérationnelle (CRDSI), Département des sciences animales, Faculté des Sciences de l'agriculture et de l'alimentation, Université Laval, Québec, QC, G1V 0A6, Canada
| | - Nathalie Vernoux
- Centre de recherche du CHU de Québec-Université Laval, Axe Neurosciences, Département de médecine moléculaire, Université Laval, Québec, QC, G1V 4G2, Canada
| | - Julie Savage
- Centre de recherche du CHU de Québec-Université Laval, Axe Neurosciences, Département de médecine moléculaire, Université Laval, Québec, QC, G1V 4G2, Canada
| | - Marie-Ève Tremblay
- Centre de recherche du CHU de Québec-Université Laval, Axe Neurosciences, Département de médecine moléculaire, Université Laval, Québec, QC, G1V 4G2, Canada
- Division of Medical Sciences, University of Victoria, Victoria, BC, V8W 2Y2, Canada
| | - Martin Pelletier
- Centre de recherche du CHU de Québec-Université Laval, Axe Maladies infectieuses et immunitaires, Département de microbiologie-infectiologie et d'immunologie, Faculté de médecine, Université Laval, Québec, QC, G1V4G2, Canada
| | - Marc Germain
- Département de biologie médicale, Université du Québec à Trois-Rivières, Québec, G8Z 4M3, Canada
| | - François J Richard
- Centre de recherche en reproduction, développement et santé intergénérationnelle (CRDSI), Département des sciences animales, Faculté des Sciences de l'agriculture et de l'alimentation, Université Laval, Québec, QC, G1V 0A6, Canada.
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Shirafuta Y, Tamura I, Shiroshita A, Fujimura T, Maekawa R, Taketani T, Sugino N. Analysis of cell-cell interaction between mural granulosa cells and cumulus granulosa cells during ovulation using single-cell RNA sequencing data of mouse ovary. Reprod Med Biol 2024; 23:e12564. [PMID: 38361634 PMCID: PMC10867398 DOI: 10.1002/rmb2.12564] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2023] [Revised: 01/10/2024] [Accepted: 01/29/2024] [Indexed: 02/17/2024] Open
Abstract
Purpose We investigated the interactions between mural granulosa cells (MGCs) and cumulus granulosa cells (CGCs) during ovulation after the LH surge. Methods We performed clustering, pseudotime, and interactome analyses utilizing reported single-cell RNA sequencing data of mouse ovary at 6 h after eCG-hCG injection. Results Clustering analysis classified granulosa cells into two distinct populations, MGCs and CGCs. Pseudotime analysis divided granulosa cells into before and after the LH surge, and further divided them into two branches, the ovulatory MGCs and the ovulatory CGCs. Interactome analysis was performed to identify the interactions between MGCs and CGCs. Twenty-six interactions were acting from CGCs toward MGCs, involving ovulation and steroidogenesis. Thirty-six interactions were acting from MGCs toward CGCs, involving hyaluronan synthesis. There were 25 bidirectional interactions, involving the EGFR pathway. In addition, we found three novel interactions: Ephrins-Ephs pathway and Wnt-Lrp6 pathway from CGCs to MGCs, associated with steroidogenesis and lipid transport, respectively, and TGF-β-TGFBR1 pathway from MGCs to CGCs, associated with hyaluronan synthesis. Conclusions MGCs and CGCs interact with each other in the preovulatory follicle after the LH surge, and their interactions have roles in corpus luteum formation, oocyte maturation, and follicle rupture.
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Affiliation(s)
- Yuichiro Shirafuta
- Department of Obstetrics and GynecologyYamaguchi University Graduate School of MedicineUbeJapan
| | - Isao Tamura
- Department of Obstetrics and GynecologyYamaguchi University Graduate School of MedicineUbeJapan
| | - Amon Shiroshita
- Department of Obstetrics and GynecologyYamaguchi University Graduate School of MedicineUbeJapan
| | - Taishi Fujimura
- Department of Obstetrics and GynecologyYamaguchi University Graduate School of MedicineUbeJapan
| | - Ryo Maekawa
- Department of Obstetrics and GynecologyYamaguchi University Graduate School of MedicineUbeJapan
| | - Toshiaki Taketani
- Department of Obstetrics and GynecologyYamaguchi University Graduate School of MedicineUbeJapan
| | - Norihiro Sugino
- Department of Obstetrics and GynecologyYamaguchi University Graduate School of MedicineUbeJapan
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Zhao Y, Namei E, Yang B, Bao X, Sun W, Subudeng G, Cao G, Li H, Wang G. Cyclic AMP mediates ovine cumulus-oocyte gap junctional function via balancing connexin 43 expression and phosphorylation. Endocr Connect 2023; 12:e230337. [PMID: 37855365 PMCID: PMC10620458 DOI: 10.1530/ec-23-0337] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/03/2023] [Accepted: 09/18/2023] [Indexed: 09/19/2023]
Abstract
Gap junction channels in cumulus-oocyte complexes (COCs) enable the transmission and communication of small molecular signals between adjacent cells, such as cAMP. However, the regulation of gap junction function (GJF) by cAMP and the underlying mechanisms involved are not fully clarified. This study investigated the effect of cAMP on connexin 43 (CX43) expression and GJF in ovine COCs using immunofluorescence, quantitative real-time PCR (qRT-PCR), western blotting, and GJF detection. The CX43 was only found in the cumulus cells (CCs) side of ovine COC. The intra-oocyte cAMP showed a significant increase at 30 min, while the intra-CC cAMP exhibited two peaks at 10 min and 1 h during in vitro maturation (IVM). Phosphorylated CX43 protein exhibited an immediate increase at 10 min, and CX43 protein displayed two peaks at 10 min and 1 h during IVM. The duration of pre-IVM exposure to forskolin and IBMX significantly enhanced phosphorylated and total CX43, as well as Gja1 and Creb genes, for 10 min; these effects were counteracted by Rp-cAMP. Both pre-IVM with forskolin and IBMX for 1 h and the GJF and CX43/p-CX43 ratio were elevated. The closure of gap junction channels caused by phosphorylated CX43 to prevent cAMP outflow from oocytes in early IVM of COC. Cyclic AMP upregulated phosphorylated and total CX43 via genomic and non-genomic pathways, but its functional regulation was dependent on the balance of the two proteins. This study provides a new insight into the regulatory mechanism between cAMP and GJF, which would improve IVM in animal and clinical research.
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Affiliation(s)
- Yufen Zhao
- College of Veterinary Medicine, Inner Mongolia Agricultural University, Hohhot, PR China
- Key Laboratory of Animal Embryo and Development Engineering of Autonomous Region Universities, Inner Mongolia Agricultural University, Hohhot, PR China
| | - Erge Namei
- College of Veterinary Medicine, Inner Mongolia Agricultural University, Hohhot, PR China
- Key Laboratory of Animal Embryo and Development Engineering of Autonomous Region Universities, Inner Mongolia Agricultural University, Hohhot, PR China
| | - Bingxue Yang
- College of Veterinary Medicine, Inner Mongolia Agricultural University, Hohhot, PR China
- Key Laboratory of Animal Embryo and Development Engineering of Autonomous Region Universities, Inner Mongolia Agricultural University, Hohhot, PR China
| | - Xiangnan Bao
- Inner Mongolia Saikexing Institute of Breeding and Reproductive Biotechnology in Domestic Animal, Hohhot, PR China
- National Center of Technology Innovation for Dairy Industry, Hohhot, PR China
| | - Wei Sun
- Inner Mongolia Saikexing Institute of Breeding and Reproductive Biotechnology in Domestic Animal, Hohhot, PR China
| | - Gerile Subudeng
- College of Veterinary Medicine, Inner Mongolia Agricultural University, Hohhot, PR China
- Key Laboratory of Animal Embryo and Development Engineering of Autonomous Region Universities, Inner Mongolia Agricultural University, Hohhot, PR China
| | - Guifang Cao
- College of Veterinary Medicine, Inner Mongolia Agricultural University, Hohhot, PR China
- Key Laboratory of Animal Embryo and Development Engineering of Autonomous Region Universities, Inner Mongolia Agricultural University, Hohhot, PR China
| | - Haijun Li
- College of Veterinary Medicine, Inner Mongolia Agricultural University, Hohhot, PR China
- Key Laboratory of Animal Embryo and Development Engineering of Autonomous Region Universities, Inner Mongolia Agricultural University, Hohhot, PR China
| | - Gui Wang
- Animal Genetic Breeding and Reproduction Research Center, Hetao College, Bayannur, PR China
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Gordon CE, Combelles CM, Lanes A, Patel J, Racowsky C. Cumulus cell co-culture in media drops does not improve rescue in vitro maturation of vitrified-warmed immature oocytes. F&S SCIENCE 2023; 4:185-192. [PMID: 37201752 DOI: 10.1016/j.xfss.2023.05.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/27/2023] [Revised: 05/10/2023] [Accepted: 05/10/2023] [Indexed: 05/20/2023]
Abstract
OBJECTIVE To assess whether co-culture with vitrified-warmed cumulus cells (CCs) in media drops improves rescue in vitro maturation (IVM) of previously vitrified immature oocytes. Previous studies have shown improved rescue IVM of fresh immature oocytes when cocultured with CCs in a three-dimensional matrix. However, the scheduling and workload of embryologists would benefit from a simpler IVM approach, particularly in the setting of time-sensitive oncofertility oocyte cryopreservation (OC) cases. Although the yield of developmentally competent mature metaphase II (MII) oocytes is increased when rescue IVM is performed before cryopreservation, it is unknown whether maturation of previously vitrified immature oocytes is improved after coculture with CCs in a simple system not involving a three-dimensional matrix. DESIGN Randomized controlled trial. SETTING Academic hospital. PATIENTS A total of 320 (160 germinal vesicles [GVs] and 160 metaphase I [MI]) immature oocytes and autologous CC clumps were vitrified from patients who were undergoing planned OC or intracytoplasmic sperm injection from July 2020 until September 2021. INTERVENTIONS On warming, the oocytes were randomized to culture in IVM media with CCs (+CC) or without CCs (-CC). Germinal vesicles and MI oocytes were cultured in 25 μL (SAGE IVM medium) for 32 hours and 20-22 hours, respectively. MAIN OUTCOME MEASURES Oocytes with a polar body (MII) were randomized to confocal microscopy for analysis of spindle integrity and chromosomal alignment to assess nuclear maturity or to parthenogenetic activation to assess cytoplasmic maturity. Wilcoxon rank sum tests for continuous variables and the chi square or Fisher's exact test for categorical variables assessed statistical significance. Relative risks (RRs) and 95% confidence intervals (CIs) were calculated. RESULTS Patient demographic characteristics were similar for both the GV and MI groups after randomization to +CC vs. -CC. No statistically significant differences were observed between +CC vs. -CC groups regarding the percentage of MII from either GV (42.5% [34/80] vs. 52.5% [42/80]; RR 0.81; 95% CI: 0.57-1.15]) or MI (76.3% [61/80]; vs. 72.5% [58/80]; RR 1.05; 95% CI: 0.88-1.26]) oocytes. An increased percentage of GV-matured MIIs underwent parthenogenetic activation in the +CC group (92.3% [12/13] vs. 70.8% [17/24]), but the difference was not statistically significant (RR 1.30; 95% CI: 0.97-1.75), whereas the activation rate was identical for MI-matured oocytes (74.3% [26/35] vs. 75.0% [18/24], CC+ vs. CC-; RR 0.99; 95% CI: 0.74-1.32). No significant differences were observed between +CC vs. -CC groups for cleavage of parthenotes from GV-matured oocytes (91.7% [11/12] vs. 82.4% [14/17]) or blastulation (0 for both) or for MI-matured oocytes (cleavage: 80.8% [21/26] vs. 94.4% [17/18]; blastulation: 0 [0/26] vs. 16.7% [3/18]). Further, no significant differences were observed between +CC vs. -CC for GV-matured oocytes regarding incidence of bipolar spindles (38.9% [7/18] vs. 33.3% [5/15]) or aligned chromosomes (22.2% [4/18] vs. 0.0 [0/15]); or for MI-matured oocytes (bipolar spindle: 38.9% [7/18] vs. 42.9% [2/28]); aligned chromosomes (35.3% [6/17] vs. 24.1% [7/29]). CONCLUSIONS Cumulus cell co-culture in this simple two-dimensional system does not improve rescue IVM of vitrified, warmed immature oocytes, at least by the markers assessed here. Further work is required to assess the efficacy of this system given its potential to provide flexibility in a busy, in vitro fertilization clinic.
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Affiliation(s)
- Catherine E Gordon
- Brigham and Women's Hospital Center for Infertility and Reproductive Surgery, Harvard Medical School, Boston, Massachusetts.
| | | | - Andrea Lanes
- Brigham and Women's Hospital Center for Infertility and Reproductive Surgery, Harvard Medical School, Boston, Massachusetts
| | - Jay Patel
- Brigham and Women's Hospital Center for Infertility and Reproductive Surgery, Harvard Medical School, Boston, Massachusetts
| | - Catherine Racowsky
- Brigham and Women's Hospital Center for Infertility and Reproductive Surgery, Harvard Medical School, Boston, Massachusetts; Department of Obstetrics, Gynecology and Reproductive Medicine, Hôpital Foch, Suresnes, France
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6
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Meinecke B, Meinecke-Tillmann S. Lab partners: oocytes, embryos and company. A personal view on aspects of oocyte maturation and the development of monozygotic twins. Anim Reprod 2023; 20:e20230049. [PMID: 37547564 PMCID: PMC10399133 DOI: 10.1590/1984-3143-ar2023-0049] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2023] [Accepted: 06/12/2023] [Indexed: 08/08/2023] Open
Abstract
The present review addresses the oocyte and the preimplantation embryo, and is intended to highlight the underlying principle of the "nature versus/and nurture" question. Given the diversity in mammalian oocyte maturation, this review will not be comprehensive but instead will focus on the porcine oocyte. Historically, oogenesis was seen as the development of a passive cell nursed and determined by its somatic compartment. Currently, the advanced analysis of the cross-talk between the maternal environment and the oocyte shows a more balanced relationship: Granulosa cells nurse the oocyte, whereas the latter secretes diffusible factors that regulate proliferation and differentiation of the granulosa cells. Signal molecules of the granulosa cells either prevent the precocious initiation of meiotic maturation or enable oocyte maturation following hormonal stimulation. A similar question emerges in research on monozygotic twins or multiples: In Greek and medieval times, twins were not seen as the result of the common course of nature but were classified as faults. This seems still valid today for the rare and until now mainly unknown genesis of facultative monozygotic twins in mammals. Monozygotic twins are unique subjects for studies of the conceptus-maternal dialogue, the intra-pair similarity and dissimilarity, and the elucidation of the interplay between nature and nurture. In the course of in vivo collections of preimplantation sheep embryos and experiments on embryo splitting and other microsurgical interventions we recorded observations on double blastocysts within a single zona pellucida, double inner cell masses in zona-enclosed blastocysts and double germinal discs in elongating embryos. On the basis of these observations we add some pieces to the puzzle of the post-zygotic genesis of monozygotic twins and on maternal influences on the developing conceptus.
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Affiliation(s)
- Burkhard Meinecke
- Institut für Reproduktionsbiologie, Tierärztliche Hochschule Hannover, Hanover, Germany
- Ambulatorische und Geburtshilfliche Veterinärklinik, Justus-Liebig-Universität Giessen, Giessen, Germany
| | - Sabine Meinecke-Tillmann
- Institut für Reproduktionsbiologie, Tierärztliche Hochschule Hannover, Hanover, Germany
- Institut für Tierzucht und Haustiergenetik, Justus-Liebig-Universität Giessen, Giessen, Germany
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Li Y, Liu S, Gao F, Peng Z, Zhang J, Li S, Lu D, Pan X. BPA interferes with granulosa cell development and oocyte meiosis in mouse preantral follicles. Exp Biol Med (Maywood) 2023; 248:1145-1158. [PMID: 37452689 PMCID: PMC10583751 DOI: 10.1177/15353702231179940] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2022] [Accepted: 03/27/2023] [Indexed: 07/18/2023] Open
Abstract
Bisphenol A (BPA) is an established environmental endocrine disruptor and can interfere with the development of female germ cells. However, the underlying mechanisms are still unclear. We investigated the effects of BPA on granulosa cell development and meiosis of oocytes using in vitro culture system of mouse preantral follicles. Preantral follicles from D14 mouse ovary were treated with 10 μg/mL BPA in vitro for 11 days. The adherent area of follicles was measured. On D11, cumulus cell expansion was observed. The meiosis recovery rate was calculated. Western blot detected P53, proliferating cell nuclear antigen (PCNA), estrogen receptor α (ERα), and cyclin B1. ELISA measured estrogen and progesterone levels. Immunofluorescence detected Cx37 on oocyte membrane. Gap junction communication was assessed. We found that BPA significantly promoted the expressions of PCNA and ERα in granulosa cells and the secretion of estrogen and progesterone by granulosa cells on D10 and significantly increased the attachment area of the follicles on D8 and D10. However, it reduced the expansion of cumulus cells, Cx37 expression, and the gap junction communication between cumulus cells and oocytes on D11. BPA promoted the recovery of oocytes from meiosis, interrupted the expression of cyclin B1 protein in arrested germinal vesicle breakdown (GVBD) oocytes, and reduced the in vitro maturation rate of oocytes. These GVBD oocytes were live without apoptosis or death. Conclusively, BPA disturbs the development of granulosa cells and the meiosis progression of oocytes by decreasing gap junction communication between oocytes and the granulosa cells as well as regulating cyclin B1 expression in GVBD oocytes.
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Affiliation(s)
- Yaqiu Li
- Center for Reproductive Medicine, Jilin Medical University, Jilin 132013, P.R. China
- Department of Anatomy, Jilin Medical University, Jilin 132013, P.R. China
| | - Sitong Liu
- Center for Reproductive Medicine, Jilin Medical University, Jilin 132013, P.R. China
- Department of Anatomy, Jilin Medical University, Jilin 132013, P.R. China
| | - Fan Gao
- Center for Reproductive Medicine, Jilin Medical University, Jilin 132013, P.R. China
| | - Zhendong Peng
- Center for Reproductive Medicine, Jilin Medical University, Jilin 132013, P.R. China
| | - Jinyu Zhang
- Center for Reproductive Medicine, Jilin Medical University, Jilin 132013, P.R. China
| | - Song Li
- Center for Reproductive Medicine, Jilin Medical University, Jilin 132013, P.R. China
| | - Dongjin Lu
- Jilin Animal Husbandry General Station, Jilin 132011, P.R. China
| | - Xiaoyan Pan
- Center for Reproductive Medicine, Jilin Medical University, Jilin 132013, P.R. China
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Adyeni BS, Carlos U, Tatiana HM, Luisa G, Jessica T, Eduardo C, Miguel B, Fahiel C, Alma L, Edmundo B, Ivan BO. Perfluorohexane sulfonate (PFHxS) disturbs the estrous cycle, ovulation rate, oocyte cell communication and calcium homeostasis in mice. Reprod Biol 2023; 23:100768. [PMID: 37163972 DOI: 10.1016/j.repbio.2023.100768] [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: 07/20/2022] [Revised: 04/27/2023] [Accepted: 04/29/2023] [Indexed: 05/12/2023]
Abstract
Perfluoroalkyl substances are man-made chemicals with ample consumer and industrial applications. They are widely used and are resistant to environmental and metabolic degradation. Several studies have evaluated the effects of Perfluorohexane sulfonate on reproduction. However, there are few reports exploring the cell and molecular mechanisms of its toxicity in the ovary. The aim of this study was to investigate the effects of PFHxS exposure on the estrous cycle, ovulation rate, and the underlying mechanisms of action in female mice in vivo. The animals received a single sub-lethal dose of PFHxS (25.1 mg/kg, 62.5 mg/kg) or vehicle and were stimulated to obtain immature cumulus cell-oocyte complexes (COCs) from the ovaries, or superovulated to develop mature COCs. To evaluate oocyte physiology, Gap-junction intercellular communication (GJIC) was analyzed in immature COCs and calcium homeostasis was evaluated in mature oocytes. PFHxS exposure prolonged the estrous cycle and decreased ovulation rate in female mice. Connexins, Cx43 and Cx37, were downregulated and GJIC was impaired in immature COCs, providing a possible mechanism for the alterations in the estrous cycle and ovulation. No morphological abnormalities were observed in the mature PFHxS-exposed oocytes, but calcium homeostasis was affected. This effect is probably due, at least partially, to deregulation of the endoplasmic reticulum calcium modulator, Stim1. These mechanisms of ovarian injury could explain the reported correlation among PFHxS levels and subfertility in women undergoing fertility treatments.
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Affiliation(s)
- Barajas Salinas Adyeni
- Department of Health Sciences, Metropolitan Autonomous University-Iztapalapa Campus, Mexico City, Mexico
| | - Urrutia Carlos
- Department of Health Sciences, Metropolitan Autonomous University-Iztapalapa Campus, Mexico City, Mexico
| | - Huerta Maldonado Tatiana
- Department of Health Sciences, Metropolitan Autonomous University-Iztapalapa Campus, Mexico City, Mexico
| | - Gonzalez Luisa
- Department of Health Sciences, Metropolitan Autonomous University-Iztapalapa Campus, Mexico City, Mexico
| | - Tellez Jessica
- Department of Health Sciences, Metropolitan Autonomous University-Iztapalapa Campus, Mexico City, Mexico
| | - Casas Eduardo
- Department of Health Sciences, Metropolitan Autonomous University-Iztapalapa Campus, Mexico City, Mexico
| | - Betancourt Miguel
- Department of Health Sciences, Metropolitan Autonomous University-Iztapalapa Campus, Mexico City, Mexico
| | - Casillas Fahiel
- Department of Biology of Reproduction, Metropolitan Autonomous University-Iztapalapa Campus, Mexico City, Mexico
| | - Lopez Alma
- Department of Health Sciences, Metropolitan Autonomous University-Iztapalapa Campus, Mexico City, Mexico
| | - Bonilla Edmundo
- Department of Health Sciences, Metropolitan Autonomous University-Iztapalapa Campus, Mexico City, Mexico
| | - Bahena Ocampo Ivan
- Department of Health Sciences, Metropolitan Autonomous University-Iztapalapa Campus, Mexico City, Mexico.
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Casillas F, Flores-González A, Juárez-Rojas L, López A, Betancourt M, Casas E, Bahena I, Bonilla E, Retana-Márquez S. Chronic stress decreases fertility parameters in female rats. Syst Biol Reprod Med 2023; 69:234-244. [PMID: 36848400 DOI: 10.1080/19396368.2023.2171822] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 03/01/2023]
Abstract
Multiple effects of stress on health have been reported; however, reproductive alterations in oocytes and cumulus cells have not been fully described. In females, chronic stress has been shown to produce alterations in the estrous cycle, to decrease oocyte in vivo maturation, and to increase the percentage of abnormal oocytes. The aim of this study was to evaluate whether the oocytes from chronically stressed female rats could recover and mature in vitro by providing them with all the necessary culture conditions, as well as to evaluate the functionality of the GAP junctions, and the viability and DNA integrity of the cumulus cells, which are crucial for the complete maturation and development of the oocyte. For this, rats were stressed daily by cold water immersion (15 °C) during 15 min for 30 consecutive days. Corticosterone serum levels in rats increased as an indicator of stress. Chronic stress decreased the percentage of in vitro matured oocytes because the cumulus cells presented irreparable damage to their DNA that led to their death, being unable to establish bidirectional communication with the oocyte for its meiotic resumption through the GAP junctions, which were also damaged. These findings could partially explain an association between stress and infertility.
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Affiliation(s)
- Fahiel Casillas
- Department of Biology of Reproduction, Metropolitan Autonomous University- Iztapalapa Unit, Mexico City, Mexico
| | - Alejandra Flores-González
- Master's Degree in Animal Reproduction Biology, Metropolitan Autonomous University- Iztapalapa Unit, Mexico City, Mexico
| | - Lizbeth Juárez-Rojas
- Department of Biology of Reproduction, Metropolitan Autonomous University- Iztapalapa Unit, Mexico City, Mexico
| | - Alma López
- Department of Health Sciences, Metropolitan Autonomous University- Iztapalapa Unit, Mexico City, Mexico
| | - Miguel Betancourt
- Department of Health Sciences, Metropolitan Autonomous University- Iztapalapa Unit, Mexico City, Mexico
| | - Eduardo Casas
- Department of Health Sciences, Metropolitan Autonomous University- Iztapalapa Unit, Mexico City, Mexico
| | - Iván Bahena
- Department of Health Sciences, Metropolitan Autonomous University- Iztapalapa Unit, Mexico City, Mexico
| | - Edmundo Bonilla
- Department of Health Sciences, Metropolitan Autonomous University- Iztapalapa Unit, Mexico City, Mexico
| | - Socorro Retana-Márquez
- Department of Biology of Reproduction, Metropolitan Autonomous University- Iztapalapa Unit, Mexico City, Mexico
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10
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Meter D, Racetin A, Vukojević K, Balog M, Ivić V, Zjalić M, Heffer M, Filipović N. A Lack of GD3 Synthase Leads to Impaired Renal Expression of Connexins and Pannexin1 in St8sia1 Knockout Mice. Int J Mol Sci 2022; 23:ijms23116237. [PMID: 35682927 PMCID: PMC9181035 DOI: 10.3390/ijms23116237] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2022] [Revised: 05/28/2022] [Accepted: 05/30/2022] [Indexed: 02/01/2023] Open
Abstract
The aim of this study was to determine the effects of altered ganglioside composition on the expression of Cx37, Cx40, Cx43, Cx45, and Panx1 in different kidney regions of St8sia1 gene knockout mice (St8sia1 KO) lacking the GD3 synthase enzyme. Experiments were performed in twelve male 6-month-old mice: four wild-type (C57BL/6-type, WT) and eight St8sia1 KO mice. After euthanasia, kidney tissue was harvested, embedded in paraffin wax, and processed for immunohistochemistry. The expression of connexins and Panx1 was determined in different regions of the kidney: cortex (CTX.), outer stripe of outer medulla (O.S.), inner stripe of outer medulla (IN.S.), and inner medulla (IN.MED.). We determined significantly lower expression of Cx37, Cx40, Cx45, and Panx1 in different parts of the kidneys of St8sia1 KO mice compared with WT. The most consistent decrease was found in the O.S. where all markers (Cx 37, 40, 45 and Panx1) were disrupted in St8si1 KO mice. In the CTX. region, we observed decrease in the expression of Cx37, Cx45, and Panx1, while reduced expression of Cx37 and Panx1 was more specific to IN.S. The results of the present study suggest that deficiency of GD3 synthase in St8sia1 KO mice leads to disruption of renal Cx expression, which is probably related to alteration of ganglioside composition.
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Affiliation(s)
- Diana Meter
- Department of Rheumatology and Clinical Immunology, University Hospital of Split, Spinčićeva 1, 21000 Split, Croatia;
| | - Anita Racetin
- Laboratory for Early Human Development, Department of Anatomy, Histology and Embryology, University of Split School of Medicine, Šoltanska 2, 21000 Split, Croatia; (A.R.); (K.V.)
| | - Katarina Vukojević
- Laboratory for Early Human Development, Department of Anatomy, Histology and Embryology, University of Split School of Medicine, Šoltanska 2, 21000 Split, Croatia; (A.R.); (K.V.)
- Laboratory for Neurocardiology, Department of Anatomy, Histology and Embryology, University of Split School of Medicine, Šoltanska 2, 21000 Split, Croatia
| | - Marta Balog
- Department of Medical Biology and Genetics, Faculty of Medicine Osijek, Josip Juraj Strossmayer University of Osijek, Huttlerova 4, 31000 Osijek, Croatia; (M.B.); (V.I.); (M.H.)
| | - Vedrana Ivić
- Department of Medical Biology and Genetics, Faculty of Medicine Osijek, Josip Juraj Strossmayer University of Osijek, Huttlerova 4, 31000 Osijek, Croatia; (M.B.); (V.I.); (M.H.)
| | - Milorad Zjalić
- Department of Molecular Medicine and Biotechnology, Faculty of Medicine Rijeka, University of Rijeka, Branchetta brothers 20, 51000 Rijeka, Croatia;
| | - Marija Heffer
- Department of Medical Biology and Genetics, Faculty of Medicine Osijek, Josip Juraj Strossmayer University of Osijek, Huttlerova 4, 31000 Osijek, Croatia; (M.B.); (V.I.); (M.H.)
| | - Natalija Filipović
- Laboratory for Early Human Development, Department of Anatomy, Histology and Embryology, University of Split School of Medicine, Šoltanska 2, 21000 Split, Croatia; (A.R.); (K.V.)
- Correspondence:
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11
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The Molecular Quality and Mitochondrial Activity of Porcine Cumulus-Oocyte Complexes Are Affected by Their Exposure to Three Endocrine-Active Compounds under 3D In Vitro Maturation Conditions. Int J Mol Sci 2022; 23:ijms23094572. [PMID: 35562963 PMCID: PMC9100547 DOI: 10.3390/ijms23094572] [Citation(s) in RCA: 25] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2022] [Revised: 04/12/2022] [Accepted: 04/19/2022] [Indexed: 12/15/2022] Open
Abstract
Thus far, the potential short- and long-term detrimental effects of a variety of environmental chemicals designated as endocrine-active compounds (EACs) have been found to interfere with histo- and anatomo-physiological functions of the reproductive system in humans and wildlife species. For those reasons, this study sought to examine whether selected EACs, which encompass the fungicide vinclozolin (Vnz), the androgenic anabolic steroid nandrolone (Ndn) and the immunosuppressant cyclosporin A (CsA), affect the developmental competence and molecular quality (MQ) of porcine cumulus–oocyte complexes (COCs) subjected to in vitro maturation (IVM) under 3D culture conditions. The COCs underwent 3D-IVM in the presence of Vnz, Ndn or CsA for 48 h. To explore whether the selected EACs induce internucleosomal DNA fragmentation in cumulus cells (CCs), TUNEL-assisted detection of late apoptotic cells was performed. Additionally, for the detailed evaluation of pro- and antiapoptotic pathways in COCs, apoptosis proteome profiler arrays were used. To determine changes in intracellular metabolism in COCs, comprehensive assessments of mitochondrial ultrastructure and activity were carried out. Moreover, the relative abundances (RAs) of mRNAs transcribed from genes that are involved in scavenging reactive oxygen species (ROS), such as SIRT3 and FOXO3, and intramitochondrial bioenergetic balance, such as ATP synthase subunit (ATP5A1), were ascertained. Finally, to investigate the extent of progression of oocyte maturation, the intraooplasmic levels of cAMP and the RAs of mRNA transcripts encoding regulatory and biocatalytic subunits of a heterodimeric meiosis-promoting factor, termed cyclin B1 (CCNB1) and cyclin-dependent kinase 1 (CDC2), were also estimated. The obtained results provide, for the first time, strong evidence that both Vnz and Ndn decrease the developmental competence of oocytes and stimulate apoptosis processes in CCs. The present study is also the first to highlight that Vnz accelerates the maturation process in immature oocytes due to both increased ROS production and the augmented RA of the CCNB1 gene. Furthermore, Vnz was proven to trigger proapoptotic events in CCs by prompting the activity of the FOXO3 transcription factor, which regulates the mitochondrial apoptosis pathway. In turn, Ndn was shown to inhibit oocyte maturation by inducing molecular events that ultimately lead to an increase in the intraooplasmic cAMP concentration. However, due to the simultaneous enhancement of the expression of TNF-β and HSP27 proteins in CCs, Ndn might be responsible for the onset of their neoplastic transformation. Finally, our current investigation is the first to clearly demonstrate that although CsA did not interfere with the nuclear and cytoplasmic maturation of oocytes, by inducing mitophagy in CCs, it disrupted oocyte metabolism, consequently attenuating the parameters related to the MQ of COCs. Summing up, Vnz, Ndn and CsA reduced not only the processes of growth and IVM but also the MQ of porcine COCs, which might make them unsuitable for assisted reproductive technologies (ARTs) such as in vitro fertilization by either gamete co-incubation or intracytoplasmic sperm injection (ICSI) and cloning by somatic cell nuclear transfer (SCNT).
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Hao T, Xu X, Hao H, Du W, Pang Y, Zhao S, Zou H, Yang S, Zhu H, Yang Y, Zhao X. Melatonin improves the maturation and developmental ability of bovine oocytes by up-regulating GJA4 to enhance gap junction intercellular communication. Reprod Fertil Dev 2021; 33:760-771. [PMID: 34585659 DOI: 10.1071/rd21145] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2021] [Accepted: 08/05/2021] [Indexed: 01/03/2023] Open
Abstract
Melatonin (MT) increases oocyte maturation by reducing reactive oxygen species level and enhancing oocyte antioxidant capacity. However, the mechanisms via which MT works are still poorly understood. In the present study, the effects of MT on the maturation rate and development ability of bovine oocytes were investigated. Then, the transcriptome of oocytes treated by MT was sequenced. Finally, the expression of gap junction protein alpha 4 (GJA4) protein and cAMP level were detected in bovine oocytes, and isoprenaline (enhancer of gap junctional intercellular communication (GJIC)) and heptanol (inhibitor of GJIC) were used to investigate the effect of MT on GJIC activity in bovine oocytes. Our results showed that MT significantly improved the maturation, developmental ability and mRNA expression of GJA4 of bovine oocytes. Meanwhile, MT significantly increased GJA4 protein level and cAMP level in bovine oocytes. In contrast to heptanol, both isoproterenol and MT significantly increased GJIC activity, nuclear maturation and the development ability of bovine oocytes. However, MT significantly restored the nuclear maturation and developmental ability of oocytes treated by heptanol. In conclusion, our results showed that MT improves the maturation and developmental ability of bovine oocytes by enhancing GJIC activity via up-regulating GJA4 protein expression in IVM progress.
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Affiliation(s)
- Tong Hao
- Embryo Biotechnology and Reproduction Laboratory, Institute of Animal Sciences (IAS), Chinese Academy of Agricultural Sciences (CAAS), No. 2 Yuanmingyuan Western Road, Haidian District, Beijing 100193, PR China
| | - Xi Xu
- Embryo Biotechnology and Reproduction Laboratory, Institute of Animal Sciences (IAS), Chinese Academy of Agricultural Sciences (CAAS), No. 2 Yuanmingyuan Western Road, Haidian District, Beijing 100193, PR China
| | - Haisheng Hao
- Embryo Biotechnology and Reproduction Laboratory, Institute of Animal Sciences (IAS), Chinese Academy of Agricultural Sciences (CAAS), No. 2 Yuanmingyuan Western Road, Haidian District, Beijing 100193, PR China
| | - Weihua Du
- Embryo Biotechnology and Reproduction Laboratory, Institute of Animal Sciences (IAS), Chinese Academy of Agricultural Sciences (CAAS), No. 2 Yuanmingyuan Western Road, Haidian District, Beijing 100193, PR China
| | - Yunwei Pang
- Embryo Biotechnology and Reproduction Laboratory, Institute of Animal Sciences (IAS), Chinese Academy of Agricultural Sciences (CAAS), No. 2 Yuanmingyuan Western Road, Haidian District, Beijing 100193, PR China
| | - Shanjiang Zhao
- Embryo Biotechnology and Reproduction Laboratory, Institute of Animal Sciences (IAS), Chinese Academy of Agricultural Sciences (CAAS), No. 2 Yuanmingyuan Western Road, Haidian District, Beijing 100193, PR China
| | - Huiying Zou
- Embryo Biotechnology and Reproduction Laboratory, Institute of Animal Sciences (IAS), Chinese Academy of Agricultural Sciences (CAAS), No. 2 Yuanmingyuan Western Road, Haidian District, Beijing 100193, PR China
| | - Sha Yang
- Embryo Biotechnology and Reproduction Laboratory, Institute of Animal Sciences (IAS), Chinese Academy of Agricultural Sciences (CAAS), No. 2 Yuanmingyuan Western Road, Haidian District, Beijing 100193, PR China
| | - Huabin Zhu
- Embryo Biotechnology and Reproduction Laboratory, Institute of Animal Sciences (IAS), Chinese Academy of Agricultural Sciences (CAAS), No. 2 Yuanmingyuan Western Road, Haidian District, Beijing 100193, PR China
| | - Yuze Yang
- Beijing General Station of Animal Husbandry, Beijing 100101, PR China
| | - Xueming Zhao
- Embryo Biotechnology and Reproduction Laboratory, Institute of Animal Sciences (IAS), Chinese Academy of Agricultural Sciences (CAAS), No. 2 Yuanmingyuan Western Road, Haidian District, Beijing 100193, PR China
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Turathum B, Gao EM, Chian RC. The Function of Cumulus Cells in Oocyte Growth and Maturation and in Subsequent Ovulation and Fertilization. Cells 2021; 10:cells10092292. [PMID: 34571941 PMCID: PMC8470117 DOI: 10.3390/cells10092292] [Citation(s) in RCA: 94] [Impact Index Per Article: 31.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2021] [Accepted: 09/01/2021] [Indexed: 12/12/2022] Open
Abstract
Cumulus cells (CCs) originating from undifferentiated granulosa cells (GCs) differentiate in mural granulosa cells (MGCs) and CCs during antrum formation in the follicle by the distribution of location. CCs are supporting cells of the oocyte that protect the oocyte from the microenvironment, which helps oocyte growth and maturation in the follicles. Bi-directional communications between an oocyte and CCs are necessary for the oocyte for the acquisition of maturation and early embryonic developmental competence following fertilization. Follicle-stimulation hormone (FSH) and luteinizing hormone (LH) surges lead to the synthesis of an extracellular matrix in CCs, and CCs undergo expansion to assist meiotic resumption of the oocyte. The function of CCs is involved in the completion of oocyte meiotic maturation and ovulation, fertilization, and subsequent early embryo development. Therefore, understanding the function of CCs during follicular development may be helpful for predicting oocyte quality and subsequent embryonic development competence, as well as pregnancy outcomes in the field of reproductive medicine and assisted reproductive technology (ART) for infertility treatment.
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Affiliation(s)
- Bongkoch Turathum
- Centre for Reproductive Medicine, Shanghai 10th People Hospital of Tongji University, Shanghai 200072, China;
- Department of Basic Medical Science, Faculty of Medicine Vajira Hospital, Navamindradhiraj University, Bangkok 10300, Thailand
| | - Er-Meng Gao
- Shanghai Clinical College, Anhui Medical University, Hefei 230032, China;
| | - Ri-Cheng Chian
- Centre for Reproductive Medicine, Shanghai 10th People Hospital of Tongji University, Shanghai 200072, China;
- Shanghai Clinical College, Anhui Medical University, Hefei 230032, China;
- Correspondence: ; Tel.: +86-18917687092
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Kordowitzki P, Sokołowska G, Wasielak-Politowska M, Skowronska A, Skowronski MT. Pannexins and Connexins: Their Relevance for Oocyte Developmental Competence. Int J Mol Sci 2021; 22:ijms22115918. [PMID: 34072911 PMCID: PMC8199496 DOI: 10.3390/ijms22115918] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2021] [Revised: 05/23/2021] [Accepted: 05/28/2021] [Indexed: 12/29/2022] Open
Abstract
The oocyte is the major determinant of embryo developmental competence in all mammalian species. Although fundamental advances have been generated in the field of reproductive medicine and assisted reproductive technologies in the past three decades, researchers and clinicians are still trying to elucidate molecular factors and pathways, which could be pivotal for the oocyte’s developmental competence. The cell-to-cell and cell-to-matrix communications are crucial not only for oocytes but also for multicellular organisms in general. This latter mentioned communication is among others possibly due to the Connexin and Pannexin families of large-pore forming channels. Pannexins belong to a protein group of ATP-release channels, therefore of high importance for the oocyte due to its requirements of high energy supply. An increasing body of studies on Pannexins provided evidence that these channels not only play a role during physiological processes of an oocyte but also during pathological circumstances which could lead to the development of diseases or infertility. Connexins are proteins that form membrane channels and gap-junctions, and more precisely, these proteins enable the exchange of some ions and molecules, and therefore they do play a fundamental role in the communication between the oocyte and accompanying cells. Herein, the role of Pannexins and Connexins for the processes of oogenesis, folliculogenesis, oocyte maturation and fertilization will be discussed and, at the end of this review, Pannexin and Connexin related pathologies and their impact on the developmental competence of oocytes will be provided.
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Affiliation(s)
- Paweł Kordowitzki
- Institute of Animal Reproduction and Food Research of Polish Academy of Sciences, Bydgoska Street 7, 10-243 Olsztyn, Poland;
- Department of Basic and Preclinical Sciences, Faculty of Biological and Veterinary Sciences, Nicolaus Copernicus University, Gagarina Street 7, 87-100 Torun, Poland
| | - Gabriela Sokołowska
- Department of Reproduction and Gynecological Endocrinology, Medical University of Bialystok, Jana Kilińskiego Street 1, 15-089 Białystok, Poland;
| | - Marta Wasielak-Politowska
- Center of Gynecology, Endocrinology and Reproductive Medicine—Artemida, Jagiellońska Street 78, 10-357 Olsztyn, Poland;
| | - Agnieszka Skowronska
- Department of Human Physiology and Pathophysiology, School of Medicine, Collegium Medicum, University of Warmia and Mazury, Warszawska Street 30, 10-357 Olsztyn, Poland;
| | - Mariusz T. Skowronski
- Department of Basic and Preclinical Sciences, Faculty of Biological and Veterinary Sciences, Nicolaus Copernicus University, Gagarina Street 7, 87-100 Torun, Poland
- Correspondence: ; Tel.: +48-566-112-231
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15
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Martínez-Quezada R, González-Castañeda G, Bahena I, Domínguez A, Domínguez-López P, Casas E, Betancourt M, Casillas F, Rodríguez J, Álvarez L, Mateos R, Altamirano M, Bonilla E. Effect of perfluorohexane sulfonate on pig oocyte maturation, gap-junctional intercellular communication, mitochondrial membrane potential and DNA damage in cumulus cells in vitro. Toxicol In Vitro 2021; 70:105011. [DOI: 10.1016/j.tiv.2020.105011] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2020] [Revised: 08/23/2020] [Accepted: 10/05/2020] [Indexed: 01/08/2023]
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16
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Cao L, Yang T, Huang S, Yun X, Hou H, Wang T, Shi D, Li X. Expression patterns of ZO-1/2 and their effects on porcine oocyte in vitro maturation and early embryonic development. Theriogenology 2020; 161:262-270. [PMID: 33348145 DOI: 10.1016/j.theriogenology.2020.12.009] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2020] [Revised: 12/07/2020] [Accepted: 12/07/2020] [Indexed: 12/30/2022]
Abstract
Zonula occludens (ZO)-1 and ZO-2 are involved in epithelial polarity maintenance, gene transcription, cell proliferation and tumor cell metastasis. Regulating ZO-1/2 expression influences the early embryonic development of mice, but whether they are involved in oocyte maturation is still poorly understood. In the present study, the expression patterns of ZO-1 and ZO-2 in porcine cumulus cells and oocytes matured in vitro and early embryos from parthenogenetic activation were detected by qRT-PCR or Western blot, and then their roles in porcine oocyte maturation and early embryo development were investigated by shRNA technology. ZO-1 and ZO-2 were found to be expressed in cumulus cells, oocytes and early embryos, while ZO-1α+ was expressed only in cumulus cells, morula and blastocysts. During in vitro maturation (IVM), the abundance of ZO-1 and ZO-2 in oocytes was significantly higher than that in cumulus cells at 0 h (P < 0.01), and their mRNA and protein levels displayed relatively higher expression at 0 and 18 h, respectively. Compared with the control groups, cumulus cell expansion, oocyte nucleus maturation, and subsequent cleavage were not influenced by treatment of the cumulus-oocyte complexes (COCs) with ZO-1-shRNA1, ZO-2-shRNA2 or combined ZO-1-shRNA1 and ZO-2-shRNA2 lentivirus (P > 0.05). However, the blastocyst rate was reduced by treatment of COCs with ZO-1-shRNA1 but not ZO-2-shRNA2. The total cell number of blastocysts was decreased by downregulation of ZO-1 and ZO-2 (P < 0.05). Downregulation of ZO-1 and ZO-2 also resulted in a significant decrease (P < 0.05) in the expression of Cx43, Cx45, PTX3 and PTGS2 in cumulus cells, Cx45, BMP15, ZP3 and C-KIT in MII oocytes, and Nanog in blastocysts, with the exception of HAS2 expression in cumulus cells and Oct4 expression in blastocysts (P > 0.05). Altogether, the above results indicate that ZO-1 and ZO-2 display similar expression patterns during porcine oocyte IVM and are critical to porcine oocyte maturation and early embryonic development.
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Affiliation(s)
- Lihua Cao
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, Guangxi University, Nanning, 530005, PR China
| | - Ting Yang
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, Guangxi University, Nanning, 530005, PR China
| | - Shihai Huang
- College of Life Science and Technology, Guangxi University, Nanning, 530005, PR China
| | - Xuedan Yun
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, Guangxi University, Nanning, 530005, PR China
| | - Hanqi Hou
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, Guangxi University, Nanning, 530005, PR China
| | - Ting Wang
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, Guangxi University, Nanning, 530005, PR China
| | - Deshun Shi
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, Guangxi University, Nanning, 530005, PR China.
| | - Xiangping Li
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, Guangxi University, Nanning, 530005, PR China.
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17
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Casillas F, Ducolomb Y, López A, Betancourt M. Effect of porcine immature oocyte vitrification on oocyte-cumulus cell gap junctional intercellular communication. Porcine Health Manag 2020; 6:37. [PMID: 33292603 PMCID: PMC7687833 DOI: 10.1186/s40813-020-00175-x] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2020] [Accepted: 11/06/2020] [Indexed: 01/27/2023] Open
Abstract
Vitrification may severely affect cumulus cells and oocyte morphology and viability, limiting their maturation and developmental potential. The aim of this study was to evaluate the gap junction intercellular communication (GJIC) integrity after the vitrification of porcine immature cumulus-oocyte complexes (COCs). Fresh COCs were randomly distributed in three groups: untreated (control), toxicity (cryoprotectants exposure), and vitrification, then subjected to in vitro maturation (IVM). Oocyte viability and IVM were measured in all groups. The evaluation of GJIC was expressed as relative fluorescence intensity (RFI). Vitrification significantly decreased oocyte viability and maturation after 44 h of culture compared to control. Also, significantly reduced RFI was observed in vitrified COCs during the first hours of culture (4-8 h) compared to control. This study demonstrates that porcine oocyte viability and maturation after 44 h of culture decreased after vitrification. GJIC was also affected during the first hours of culture after the vitrification of immature oocytes, being one of the possible mechanisms by which oocyte maturation decreased.
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Affiliation(s)
- Fahiel Casillas
- Departamento de Biología de la Reproducción, División de Ciencias Biológicas y de la Salud, Universidad Autónoma Metropolitana-Iztapalapa, 09340, CDMX, México.
| | - Yvonne Ducolomb
- Departamento de Ciencias de la Salud, División de Ciencias Biológicas y de la Salud, Universidad Autónoma Metropolitana-Iztapalapa, 09340, CDMX, México
| | - Alma López
- Departamento de Ciencias de la Salud, División de Ciencias Biológicas y de la Salud, Universidad Autónoma Metropolitana-Iztapalapa, 09340, CDMX, México
| | - Miguel Betancourt
- Departamento de Ciencias de la Salud, División de Ciencias Biológicas y de la Salud, Universidad Autónoma Metropolitana-Iztapalapa, 09340, CDMX, México
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18
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Yoon JD, Hwang SU, Kim M, Jeon Y, Hyun SH. Growth differentiation factor 8 regulates SMAD2/3 signaling and improves oocyte quality during porcine oocyte maturation in vitro†. Biol Reprod 2020; 101:63-75. [PMID: 31004472 DOI: 10.1093/biolre/ioz066] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2018] [Revised: 08/07/2018] [Accepted: 04/17/2019] [Indexed: 11/12/2022] Open
Abstract
Growth differentiation factor 8 (GDF8), also known as myostatin, is a member of the transforming growth factor-β (TGF-β) family and has been identified as a strong physiological regulator of muscle differentiation. Recently, the functional role of GDF8 in reproductive organs has received increased interest following its detection in the human placenta and uterus. To investigate the effects of GDF8 during porcine oocyte in vitro maturation (IVM), we assessed the quality of matured oocytes. Furthermore, we investigated the specific gene transcription and protein activation levels in oocytes and cumulus cells after IVM and subsequent embryonic development after in vitro fertilization and parthenogenetic activation. Prior to these experiments, the concentration of GDF8 in porcine follicular fluid was determined. During the entire IVM period, 1.3 ng/mL GDF8 and its signaling inhibitor SB431542 (SB) at 5 μM were added as control, SB, SB + GDF8, and GDF8 groups, respectively. Our results demonstrate that supplementation with GDF8 during porcine oocyte IVM enhanced both meiotic and cytoplasmic maturation, with altered transcriptional patterns, via activation of Sma- and Mad-related protein 2/3 (SMAD2/3). Using the pharmacological inhibitor SB431542, we demonstrated that inhibition of GDF8-induced Smad2/3 signaling reduces matured oocyte quality. In conclusion, for the first time, we demonstrated paracrine factor GDF8 in porcine follicular fluid in vivo. Furthermore, we showed that GDF8 supplementation improved mature oocyte quality by regulating p38 mitogen-activated protein kinase phosphorylation and intracellular glutathione and reactive oxygen species levels during porcine IVM.
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Affiliation(s)
- Junchul David Yoon
- Laboratory of Veterinary Embryology and Biotechnology, Veterinary Medical Center and College of Veterinary Medicine, Chungbuk National University, Cheongju, Republic of Korea.,Institute of Stem Cell & Regenerative Medicine, Chungbuk National University, Cheongju, Republic of Korea
| | - Seon-Ung Hwang
- Laboratory of Veterinary Embryology and Biotechnology, Veterinary Medical Center and College of Veterinary Medicine, Chungbuk National University, Cheongju, Republic of Korea.,Institute of Stem Cell & Regenerative Medicine, Chungbuk National University, Cheongju, Republic of Korea
| | - Mirae Kim
- Laboratory of Veterinary Embryology and Biotechnology, Veterinary Medical Center and College of Veterinary Medicine, Chungbuk National University, Cheongju, Republic of Korea.,Institute of Stem Cell & Regenerative Medicine, Chungbuk National University, Cheongju, Republic of Korea
| | - Yubyeol Jeon
- Laboratory of Theriogenology and Reproductive Biotechnologies, College of Veterinary Medicine, Chonbuk National University, Iksan, Jeolabuk-do, Republic of Korea
| | - Sang-Hwan Hyun
- Laboratory of Veterinary Embryology and Biotechnology, Veterinary Medical Center and College of Veterinary Medicine, Chungbuk National University, Cheongju, Republic of Korea.,Institute of Stem Cell & Regenerative Medicine, Chungbuk National University, Cheongju, Republic of Korea
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19
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Xu D, He H, Liu D, Geng G, Li Q. A novel role of SIRT2 in regulating gap junction communications via connexin-43 in bovine cumulus-oocyte complexes. J Cell Physiol 2020; 235:7332-7343. [PMID: 32039484 DOI: 10.1002/jcp.29634] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2019] [Accepted: 01/30/2020] [Indexed: 01/04/2023]
Abstract
SIRT2, the predominantly cytosolic sirtuin, plays important role in multiple biological processes, including metabolism, stress response, and aging. However, the function of SIRT2 in gap junction intercellular communications (GJICs) of cumulus-oocyte complexes (COCs) is not yet known. The purpose of the present study was to evaluate the effect and underlining mechanism of SIRT2 on GJICs in COCs. Here, we found that treatment with SIRT2 inhibitors (SirReal2 or TM) inhibited bovine oocyte nuclear maturation. Further analysis revealed that SIRT2 inactivation disturbed the GJICs of COCs during in vitro maturation. Correspondingly, both the Cx43 phosphorylation levels and MEK/MER signaling pathways were induced by SIRT2 inhibition. Importantly, SIRT2-mediated Cx43 phosphorylation was completely abolished by treatment with MEK1/2 inhibitor (Trametinib). Furthermore, treatment with SIRT2 inhibitors resulted in the high levels of MEK1/2 acetylation. Functionally, downregulating the MER/ERK pathways with inhibitors (Trametinib or SCH772984) could attenuate the closure of GJICs caused by SIRT2 inactivation in partly. In addition, inhibition of SIRT2 activity significantly decreased the membrane and zona pellucida localization of Cx43 by upregulating the levels of Cx43 acetylation. Taken together, these results demonstrated a novel role that SIRT2 regulates GJICs via modulating the phosphorylation and deacetylation of Cx43 in COCs.
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Affiliation(s)
- Dejun Xu
- Department of Zoology and Animal Reproduction, College of Animal Science and Technology, Northwest A&F University, Yangling, China
| | - Huanshan He
- Department of Zoology and Animal Reproduction, College of Animal Science and Technology, Northwest A&F University, Yangling, China
| | - Dingbang Liu
- Department of Zoology and Animal Reproduction, College of Animal Science and Technology, Northwest A&F University, Yangling, China
| | - Guoxia Geng
- Department of Clinical Veterinary Medicine, College of Veterinary Medicine, Northwest A&F University, Yangling, China
| | - Qingwang Li
- Department of Zoology and Animal Reproduction, College of Animal Science and Technology, Northwest A&F University, Yangling, China
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20
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Luteinizing Hormone Action in Human Oocyte Maturation and Quality: Signaling Pathways, Regulation, and Clinical Impact. Reprod Sci 2020; 27:1223-1252. [PMID: 32046451 PMCID: PMC7190682 DOI: 10.1007/s43032-019-00137-x] [Citation(s) in RCA: 48] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2019] [Accepted: 10/14/2019] [Indexed: 12/18/2022]
Abstract
The ovarian follicle luteinizing hormone (LH) signaling molecules that regulate oocyte meiotic maturation have recently been identified. The LH signal reduces preovulatory follicle cyclic nucleotide levels which releases oocytes from the first meiotic arrest. In the ovarian follicle, the LH signal reduces cyclic nucleotide levels via the CNP/NPR2 system, the EGF/EGF receptor network, and follicle/oocyte gap junctions. In the oocyte, reduced cyclic nucleotide levels activate the maturation promoting factor (MPF). The activated MPF induces chromosome segregation and completion of the first and second meiotic divisions. The purpose of this paper is to present an overview of the current understanding of human LH signaling regulation of oocyte meiotic maturation by identifying and integrating the human studies on this topic. We found 89 human studies in the literature that identified 24 LH follicle/oocyte signaling proteins. These studies show that human oocyte meiotic maturation is regulated by the same proteins that regulate animal oocyte meiotic maturation. We also found that these LH signaling pathway molecules regulate human oocyte quality and subsequent embryo quality. Remarkably, in vitro maturation (IVM) prematuration culture (PMC) protocols that manipulate the LH signaling pathway improve human oocyte quality of cultured human oocytes. This knowledge has improved clinical human IVM efficiency which may become a routine alternative ART for some infertile patients.
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21
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Zhang Y, Zhu Z, Li H, Zhu M, Peng X, Xin A, Qu R, He W, Fu J, Sun X. Resolvin E1 in Follicular Fluid Acts as a Potential Biomarker and Improves Oocyte Developmental Competence by Optimizing Cumulus Cells. Front Endocrinol (Lausanne) 2020; 11:210. [PMID: 32373069 PMCID: PMC7176900 DOI: 10.3389/fendo.2020.00210] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/05/2020] [Accepted: 03/25/2020] [Indexed: 12/15/2022] Open
Abstract
Metabolic profile of follicular fluid (FF) has been investigated to look for biomarkers for oocyte quality. Resolvin E1 (RvE1), a potent pro-resolving mediator, was reported to have protective action in cell function. The study aimed to examine the predictive value of RvE1 for oocyte quality and to explore the cellular mechanism of RvE1 in improving oocyte competence. Metabolic profiles of 80 FF samples showed a higher level of RvE1 in group A (blastocysts scored ≥ B3BC and B3CB according to Gardner's blastocyst scoring system, N = 36) than that of group B (blastocysts scored < B3BC and B3CB, N = 44, P = 0.0018). The receiver operating characteristic (ROC) curve analysis showed that RvE1 level in FF below 8.96 pg/ml (AUC:0.75; 95%CI: 0.64-0.86; P = 0.00012) could predict poor oocyte quality with specificity of 97.22%, suggesting RvE1 as a potential biomarker to exclude inferior oocytes. Besides, the level of RvE1 was found to be significantly lower in FF than in serum (57.49 to 17.62 pg/ml; P=.0037) and was gradually accumulated in the culture medium of cumulus cells (CCs) during cell culture, which indicated that RvE1 came from both blood exudates and local secretion. The in vitro experiment revealed thecellular mechanism of RvE1 in improvingoocyte qualityby decreasing the cumulus cellapoptotic rate and increasing cell viability and proliferation. It is the first time thatthe role of RvE1 in reproduction is explored. In conclusion, RvE1 is valuable as a potential exclusive biomarker for oocyte selection andplays a role in improving oocyte quality.
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Affiliation(s)
- Yijing Zhang
- Obstetrics and Gynecology Hospital of Fudan University, Shanghai, China
- Shanghai JIAI Genetics & IVF Institute, Shanghai, China
- Key Laboratory of Female Reproductive Endocrine Related Diseases of Obstetrics and Gynecology Hospital of Fudan University, Shanghai, China
| | - Zhongyi Zhu
- Obstetrics and Gynecology Hospital of Fudan University, Shanghai, China
- Key Laboratory of Female Reproductive Endocrine Related Diseases of Obstetrics and Gynecology Hospital of Fudan University, Shanghai, China
| | - He Li
- Obstetrics and Gynecology Hospital of Fudan University, Shanghai, China
- Shanghai JIAI Genetics & IVF Institute, Shanghai, China
| | - Mingjiang Zhu
- CAS Key Laboratory of Nutrition, Metabolism and Food Safety, Shanghai Institute of Nutrition and Health, Shanghai Institutes for Biological Sciences (SIBS), Chinese Academy of Sciences (CAS), Shanghai, China
| | - Xiandong Peng
- Obstetrics and Gynecology Hospital of Fudan University, Shanghai, China
- Shanghai JIAI Genetics & IVF Institute, Shanghai, China
| | - Aijie Xin
- Obstetrics and Gynecology Hospital of Fudan University, Shanghai, China
- Shanghai JIAI Genetics & IVF Institute, Shanghai, China
| | - Ronggui Qu
- Obstetrics and Gynecology Hospital of Fudan University, Shanghai, China
- Shanghai JIAI Genetics & IVF Institute, Shanghai, China
| | - Wen He
- Obstetrics and Gynecology Hospital of Fudan University, Shanghai, China
- Shanghai JIAI Genetics & IVF Institute, Shanghai, China
- Key Laboratory of Female Reproductive Endocrine Related Diseases of Obstetrics and Gynecology Hospital of Fudan University, Shanghai, China
| | - Jing Fu
- Obstetrics and Gynecology Hospital of Fudan University, Shanghai, China
- Shanghai JIAI Genetics & IVF Institute, Shanghai, China
- *Correspondence: Jing Fu
| | - Xiaoxi Sun
- Obstetrics and Gynecology Hospital of Fudan University, Shanghai, China
- Shanghai JIAI Genetics & IVF Institute, Shanghai, China
- Key Laboratory of Female Reproductive Endocrine Related Diseases of Obstetrics and Gynecology Hospital of Fudan University, Shanghai, China
- Xiaoxi Sun
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22
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Montes-Quiroz GL, Sánchez-Dávila F, Domínguez-Díaz D, Vázquez-Armijo JF, Grizelj J, Ledezma-Torres RA, Cervantes-Vega R, Arce-Vázquez N, Garza-Brenner E, Bernal-Barragán H. Influence of eCG and breed on the number of oocytes collected and the production of in vitro embryos of young goats during the reproductive season. Trop Anim Health Prod 2019; 51:2521-2527. [PMID: 31209690 DOI: 10.1007/s11250-019-01972-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2019] [Accepted: 06/06/2019] [Indexed: 11/25/2022]
Abstract
The objective of this study was to determine the effect of breed and equine chorionic gonadotropin (eCG) on ovarian response and in vitro embryo production from young goats. Thirty-one (12 Alpine, 10 Nubian, and 9 Saanen) were randomly assigned into three treatments of eCG (T1, 0 IU; T2, 500 IU; and T3, 1000 IU). Alpine goats showed the highest amount and largest size of follicles (P = 0.003). The effect of eCG dose 24 h post application was significant (P < 0.05), and was superior in goats undergoing T2. The aspiration rate of cumulus-oocyte complexes (COC) was 34% (P > 0.05), except for percentage of denuded oocytes, which obtained the highest number (P = 0.003) in the Saanen goats. The same difference was found (P = 0.02) in oocytes grade III in T2 and T3, with 42.5 and 37.9% respectively. In vitro embryo production was 80.0% of IVF/cleavage in the Alpine goats (P = 0.003). Embryo production was the greatest for T2 (69.2%; P = 0.004). T3 goats had higher percentage of morula stage (66.6%; P = 0.030). It is concluded that the application of eCG has a significant effect on the ovarian status, and quality and quantity of embryos with a differential response depending on the breed.
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Affiliation(s)
- Gabriela Lisset Montes-Quiroz
- Posgrado Conjunto Facultad de Agronomía-Facultad de Medicina Veterinaria y Zootecnia, Universidad Autónoma de Nuevo León, Campus de Ciencias Agropecuarias, 66050, General Escobedo, N.L., Mexico
| | - Fernando Sánchez-Dávila
- Posgrado Conjunto Facultad de Agronomía-Facultad de Medicina Veterinaria y Zootecnia, Universidad Autónoma de Nuevo León, Campus de Ciencias Agropecuarias, 66050, General Escobedo, N.L., Mexico. .,Facultad de Agronomía, Unidad Académica Marín, Laboratorio de Reproducción Animal, Universidad Autónoma de Nuevo León, 66700, Marín, N.L., Mexico.
| | - David Domínguez-Díaz
- Unión Ganadera Regional de Nuevo León, Centro de Biotecnología Reproductiva, General Bravo, N.L., Mexico
| | - José Fernanco Vázquez-Armijo
- Centro Universitario UAEM Temascaltepec, Universidad Autónoma del Estado de México, 51300, Temascaltepec, Mexico
| | - Juraj Grizelj
- Faculty of Veterinary Medicine, University of Zagreb, Zagreb, Croatia
| | - Rogelio A Ledezma-Torres
- Posgrado Conjunto Facultad de Agronomía-Facultad de Medicina Veterinaria y Zootecnia, Universidad Autónoma de Nuevo León, Campus de Ciencias Agropecuarias, 66050, General Escobedo, N.L., Mexico
| | - Rubén Cervantes-Vega
- Posgrado Conjunto Facultad de Agronomía-Facultad de Medicina Veterinaria y Zootecnia, Universidad Autónoma de Nuevo León, Campus de Ciencias Agropecuarias, 66050, General Escobedo, N.L., Mexico
| | - Nestor Arce-Vázquez
- Posgrado Conjunto Facultad de Agronomía-Facultad de Medicina Veterinaria y Zootecnia, Universidad Autónoma de Nuevo León, Campus de Ciencias Agropecuarias, 66050, General Escobedo, N.L., Mexico
| | - Estela Garza-Brenner
- Posgrado Conjunto Facultad de Agronomía-Facultad de Medicina Veterinaria y Zootecnia, Universidad Autónoma de Nuevo León, Campus de Ciencias Agropecuarias, 66050, General Escobedo, N.L., Mexico
| | - Hugo Bernal-Barragán
- Posgrado Conjunto Facultad de Agronomía-Facultad de Medicina Veterinaria y Zootecnia, Universidad Autónoma de Nuevo León, Campus de Ciencias Agropecuarias, 66050, General Escobedo, N.L., Mexico
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23
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Domínguez A, Salazar Z, Betancourt M, Ducolomb Y, Casas E, Fernández F, Bahena I, Salomón A, Teteltitla M, Martínez R, Chaparro A, Cuapio P, Salazar-López C, Bonilla E. Effect of perfluorodecanoic acid on pig oocyte viability, intracellular calcium levels and gap junction intercellular communication during oocyte maturation in vitro. Toxicol In Vitro 2019; 58:224-229. [PMID: 30946969 DOI: 10.1016/j.tiv.2019.03.041] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2018] [Revised: 03/05/2019] [Accepted: 03/30/2019] [Indexed: 02/07/2023]
Abstract
Perfluorodecanoic acid (PFDA) is a synthetic perfluorinated compound, which has been reported to exert adverse effects on somatic cells. However, its effects on germ cells have not been studied to date. The aim of the present study was to analyze the effects of PFDA on the viability, intracellular calcium levels and gap junction intercellular communication (GJIC) during porcine oocyte maturation in vitro. PFDA negatively impacted oocyte viability (medium lethal concentration, LC50 = 7.8 μM) and maturation (medium inhibition of maturation, IM50 = 3.8 μM). Oocytes exposed to 3.8 μM PFDA showed higher levels of intracellular calcium relative to control oocytes. In addition, GJIC among the cumulus cells and the oocyte was disrupted. The effects of PFDA on oocyte calcium homeostasis and intercellular communication seem to be responsible for the inhibition of oocyte maturation and oocyte death. In addition, since the deleterious effects of PFDA on oocyte viability, maturation and GJIC are significantly stronger than the previously reported effects of another widely used perfluorinated compound (Perfluorooctane sulfonate) in the same model, the use of PFDA in consumer products is questioned.
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Affiliation(s)
- A Domínguez
- Departamento de Ciencias de la Salud, Universidad Autónoma Metropolitana-Iztapalapa, Av. San Rafael Atlixco 186, CP 09340 CDMX, Mexico; Doctorado en Ciencias Biológicas y de la Salud, Universidad Autónoma Metropolitana-Iztapalapa, Av. San Rafael Atlixco 186, CP 09340 CDMX, Mexico
| | - Z Salazar
- Departamento de Ciencias de la Salud, Universidad Autónoma Metropolitana-Iztapalapa, Av. San Rafael Atlixco 186, CP 09340 CDMX, Mexico
| | - M Betancourt
- Departamento de Ciencias de la Salud, Universidad Autónoma Metropolitana-Iztapalapa, Av. San Rafael Atlixco 186, CP 09340 CDMX, Mexico
| | - Y Ducolomb
- Departamento de Ciencias de la Salud, Universidad Autónoma Metropolitana-Iztapalapa, Av. San Rafael Atlixco 186, CP 09340 CDMX, Mexico
| | - E Casas
- Departamento de Ciencias de la Salud, Universidad Autónoma Metropolitana-Iztapalapa, Av. San Rafael Atlixco 186, CP 09340 CDMX, Mexico
| | - F Fernández
- Departamento de Producción Agrícola y Animal, Universidad Autónoma Metropolitana-Xochimilco, Calzada del hueso 1100, CP 04960 CDMX, Mexico
| | - I Bahena
- Departamento de Ciencias de la Salud, Universidad Autónoma Metropolitana-Iztapalapa, Av. San Rafael Atlixco 186, CP 09340 CDMX, Mexico
| | - A Salomón
- Departamento de Ciencias de la Salud, Universidad Autónoma Metropolitana-Iztapalapa, Av. San Rafael Atlixco 186, CP 09340 CDMX, Mexico; Doctorado en Ciencias Biológicas y de la Salud, Universidad Autónoma Metropolitana-Iztapalapa, Av. San Rafael Atlixco 186, CP 09340 CDMX, Mexico
| | - M Teteltitla
- Departamento de Ciencias de la Salud, Universidad Autónoma Metropolitana-Iztapalapa, Av. San Rafael Atlixco 186, CP 09340 CDMX, Mexico; Doctorado en Ciencias Biológicas y de la Salud, Universidad Autónoma Metropolitana-Iztapalapa, Av. San Rafael Atlixco 186, CP 09340 CDMX, Mexico
| | - R Martínez
- Departamento de Ciencias de la Salud, Universidad Autónoma Metropolitana-Iztapalapa, Av. San Rafael Atlixco 186, CP 09340 CDMX, Mexico; Doctorado en Ciencias Biológicas y de la Salud, Universidad Autónoma Metropolitana-Iztapalapa, Av. San Rafael Atlixco 186, CP 09340 CDMX, Mexico
| | - A Chaparro
- Departamento de Ciencias de la Salud, Universidad Autónoma Metropolitana-Iztapalapa, Av. San Rafael Atlixco 186, CP 09340 CDMX, Mexico
| | - P Cuapio
- Clínica de Reproducción Asistida "HISPAREP", Hospital Español, Avenida Ejército Nacional 613, 11520 CDMX, Mexico
| | - C Salazar-López
- Clínica de Reproducción Asistida "HISPAREP", Hospital Español, Avenida Ejército Nacional 613, 11520 CDMX, Mexico
| | - E Bonilla
- Departamento de Ciencias de la Salud, Universidad Autónoma Metropolitana-Iztapalapa, Av. San Rafael Atlixco 186, CP 09340 CDMX, Mexico.
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24
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Ferré-Pujol P, Nguyen XK, Nagahara T, Bui TTM, Wakai T, Funahashi H. Removal of cumulus cells around 20 h after the start of in vitro maturation improves the meiotic competence of porcine oocytes via reduction in cAMP and cGMP levels. J Reprod Dev 2019; 65:177-182. [PMID: 30745497 PMCID: PMC6473111 DOI: 10.1262/jrd.2018-130] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
Abstract
We examined the effect of the timing of removing cumulus cells surrounding porcine oocytes from small follicles (SFs, < 3 mm in diameter) and medium follicles (MFs; 3–6 mm in diameter)
on the meiotic and developmental competence of the oocytes. Cumulus-oocyte complexes (COCs) were collected from SFs and MFs, and the oocytes were denuded at 0, 20, and 44 h after the start
of in vitro maturation (IVM), and the meiotic progression of the oocytes was assessed at the end of the IVM period. The incidence of mature oocytes was significantly
affected by both the origin of the COCs and the time when the oocytes were denuded. Although the percentage of mature oocytes was always higher when the COCs were collected from MFs than
that when the COCs were collected from SFs, the maturation rate was significantly higher when the oocytes were denuded at 20 h than when they were denuded at 44 h after the start of IVM.
When the mature oocytes were activated electrically, the developmental competence of the oocytes denuded at 20 and 44 h to reach the blastocyst stage did not differ, whereas the competence
of the MF-derived oocytes was significantly higher than that of SF-derived oocytes. When the intracellular cAMP and cGMP levels in SF-derived oocytes were examined at 24 h of IVM, the levels
of both were significantly decreased only in the oocytes denuded at 20 h. In conclusion, denuding oocytes at 20 h of IVM caused a significant reduction in ooplasmic cAMP and cGMP levels and
increased the meiotic competence of the oocytes without any reduction in blastocyst formation, even in the case of SF-derived oocytes.
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Affiliation(s)
- Pilar Ferré-Pujol
- Department of Animal Science, Graduate School of Environmental and Life Science, Okayama University, Okayama 700-8530, Japan
| | - Xuan Khanh Nguyen
- Department of Animal Science, Graduate School of Environmental and Life Science, Okayama University, Okayama 700-8530, Japan.,Department of Veterinary and Animal Science, Nong Lam University, Ho Chi Minh City, Vietnam
| | - Tomoki Nagahara
- Department of Animal Science, Graduate School of Environmental and Life Science, Okayama University, Okayama 700-8530, Japan
| | - Thi Tra Mi Bui
- Department of Animal Science, Graduate School of Environmental and Life Science, Okayama University, Okayama 700-8530, Japan.,Department of Veterinary and Animal Science, Nong Lam University, Ho Chi Minh City, Vietnam
| | - Takuya Wakai
- Department of Animal Science, Graduate School of Environmental and Life Science, Okayama University, Okayama 700-8530, Japan
| | - Hiroaki Funahashi
- Department of Animal Science, Graduate School of Environmental and Life Science, Okayama University, Okayama 700-8530, Japan
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25
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Zarezadeh R, Mehdizadeh A, Leroy JLMR, Nouri M, Fayezi S, Darabi M. Action mechanisms of n-3 polyunsaturated fatty acids on the oocyte maturation and developmental competence: Potential advantages and disadvantages. J Cell Physiol 2018; 234:1016-1029. [PMID: 30073662 DOI: 10.1002/jcp.27101] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2017] [Accepted: 06/28/2018] [Indexed: 12/18/2022]
Abstract
Infertility is a growing problem worldwide. Currently, in vitro fertilization (IVF) is widely performed to treat infertility. However, a high percentage of IVF cycles fails, due to the poor developmental potential of the retrieved oocyte to generate viable embryos. Fatty acid content of the follicular microenvironment can affect oocyte maturation and the subsequent developmental competence. Saturated and monounsaturated fatty acids are mainly used by follicle components as primary energy sources whereas polyunsaturated fatty acids (PUFAs) play a wide range of roles. A large body of evidence supports the beneficial effects of n-3 PUFAs in prevention, treatment, and amelioration of some pathophysiological conditions including heart diseases, cancer, diabetes, and psychological disorders. Nevertheless, current findings regarding the effects of n-3 PUFAs on reproductive outcomes in general and on oocyte quality more specifically are inconsistent. This review attempts to provide a comprehensive overview of potential molecular mechanisms by which n-3 PUFAs affect oocyte maturation and developmental competence, particularly in the setting of IVF and thereby aims to elucidate the reasons behind current discrepancies around this topic.
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Affiliation(s)
- Reza Zarezadeh
- Women's Reproductive Health Research Center, Tabriz University of Medical Sciences, Tabriz, Iran.,Department of Biochemistry and Clinical Laboratories, Faculty of Medicine, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Amir Mehdizadeh
- Endocrine Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Jo L M R Leroy
- Department of Veterinary Sciences, Gamete Research Center, Veterinary Physiology and Biochemistry, University of Antwerp, Wilrijk, Belgium
| | - Mohammad Nouri
- Stem Cell and Regenerative Medicine Institute, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Shabnam Fayezi
- Infertility and Reproductive Health Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran.,Université de Nice Sophia Antipolis, Inserm U1091 - CNRS U7277, Nice 06034, France
| | - Masoud Darabi
- Women's Reproductive Health Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
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26
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Bergeron A, Guillemette C, Sirard MA, Richard FJ. Active 3'-5' cyclic nucleotide phosphodiesterases are present in detergent-resistant membranes of mural granulosa cells. Reprod Fertil Dev 2018; 29:778-790. [PMID: 26724956 DOI: 10.1071/rd15243] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2015] [Accepted: 11/26/2015] [Indexed: 01/21/2023] Open
Abstract
Lipids rafts are specialised membrane microdomains involved in cell signalling that can be isolated as detergent-resistant membranes (DRMs). The second messenger cyclic AMP (cAMP) has a central role in cell signalling in the ovary and its degradation is carried out by the phosphodiesterase (PDE) enzyme family. We hypothesised that PDEs could be functionally present in the lipid rafts of porcine mural granulosa cell membranes. PDE6C, PDE8A and PDE11A were detected by dot blot in the DRMs and the Triton-soluble fraction of the mural granulosa cells membrane and the cytosol. As shown by immunocytochemistry, PDEs showed clear immunostaining in mural granulosa cell membranes and the cytosol. Interestingly, cAMP-PDE activity was 18 times higher in the DRMs than in the Triton-soluble fraction of cell membranes and was 7.7 times higher in the cytosol than in the DRMs. cAMP-PDE activity in mural granulosa cells was mainly contributed by the PDE8 and PDE11 families. This study shows that PDEs from the PDE8 and PDE11 families are present in mural granulosa cells and that the cAMP-PDE activity is mainly contributed by the cytosol. In the cell membrane, the cAMP-PDE activity is mainly contributed by the DRMs. In addition, receptors for prostaglandin E2 and LH, two G-protein-coupled receptors, are present in lipid rafts and absent from the non-raft fraction of the granulosa cell membrane. These results suggest that in these cells, the lipid rafts exist as a cell-signalling platform and PDEs are one of the key enzyme families present in the raft.
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Affiliation(s)
- Annick Bergeron
- Centre de Recherche en Biologie de la Reproduction, Département des Sciences Animales, Faculté des Sciences de l'Agriculture et de l'Alimentation, 2425 rue de l'Agriculture, Pavillon Paul-Comtois, Université Laval, Québec, G1V 0A6, Canada
| | - Christine Guillemette
- Centre de Recherche en Biologie de la Reproduction, Département des Sciences Animales, Faculté des Sciences de l'Agriculture et de l'Alimentation, 2425 rue de l'Agriculture, Pavillon Paul-Comtois, Université Laval, Québec, G1V 0A6, Canada
| | - Marc-André Sirard
- Centre de Recherche en Biologie de la Reproduction, Département des Sciences Animales, Faculté des Sciences de l'Agriculture et de l'Alimentation, 2425 rue de l'Agriculture, Pavillon Paul-Comtois, Université Laval, Québec, G1V 0A6, Canada
| | - François J Richard
- Centre de Recherche en Biologie de la Reproduction, Département des Sciences Animales, Faculté des Sciences de l'Agriculture et de l'Alimentation, 2425 rue de l'Agriculture, Pavillon Paul-Comtois, Université Laval, Québec, G1V 0A6, Canada
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27
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Walls ML, Hart RJ. In vitro maturation. Best Pract Res Clin Obstet Gynaecol 2018; 53:60-72. [PMID: 30056110 DOI: 10.1016/j.bpobgyn.2018.06.004] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2018] [Accepted: 06/19/2018] [Indexed: 12/13/2022]
Abstract
In vitro maturation (IVM) is an in vitro fertilisation (IVF) technique modified to collect immature oocytes from antral follicles, with the final stages of meiosis completed during in vitro culture. The primary benefit of IVM is that it reduces gonadotrophin stimulation in the patient, thereby eliminating the risk of ovarian hyperstimulation syndrome (OHSS) in high-risk patients such as those with polycystic ovaries (PCO) and polycystic ovary syndrome (PCOS). IVM has additional benefits for fertility preservation, particularly in oncofertility patients. IVM research has progressed in recent years to significantly improve success rates and to provide evidence of safety in terms of neonatal and childhood outcomes. More recently, pre-maturation protocols and the discovery of new culture media additives have demonstrated potential to maximise maturation and oocyte developmental competence. In this chapter, we discuss current methodologies used in clinics routinely performing IVM, target patient populations and areas of future research that may improve IVM success.
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Affiliation(s)
- Melanie L Walls
- Fertility North, Suite 213, Specialist Medical Centre, Joondalup Health Campus, Shenton Avenue, Joondalup, Western Australia, 6027, Australia; Fertility Specialists of Western Australia, Bethesda Hospital, 25 Queenslea Drive, Claremont, Perth, Western Australia, 6010, Australia
| | - Roger J Hart
- Fertility Specialists of Western Australia, Bethesda Hospital, 25 Queenslea Drive, Claremont, Perth, Western Australia, 6010, Australia; Division of Obstetrics and Gynaecology, University of Western Australia, King Edward Memorial Hospital, 374 Bagot Road, Subiaco, Perth, Western Australia, 6008, Australia.
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28
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Inhibition of PDE3A sustains meiotic arrest and gap junction of bovine growing oocytes in in vitro growth culture. Theriogenology 2018; 118:110-118. [PMID: 29886357 DOI: 10.1016/j.theriogenology.2018.05.028] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2018] [Revised: 05/22/2018] [Accepted: 05/23/2018] [Indexed: 11/22/2022]
Abstract
Bovine growing oocytes with a diameter of 105-115 μm from early antral follicles (1.2-1.8 mm) are able to resume meiosis, but lack the competence to mature to metaphase II. To confer full maturation competence onto the oocytes, culture systems which can support their growth and prevent their meiotic resumption during culture are needed. In this study, we cultured growing oocytes for 5 days to examine the effects of different phosphodiesterase (PDE) inhibitors on meiotic arrest and acquisition of full maturation competence of growing oocytes, and their gap junctional communication with cumulus cells. Growing oocyte-cumulus complexes (OCCs) were cultured with 3-isobutyl-1-methylxanthine (IBMX; broad-spectrum PDE inhibitor), rolipram (PDE4D inhibitor), cilostamide and milrinone (PDE3A inhibitors). The mean diameters of oocytes increased similarly in all groups. IBMX, cilostamide and milrinone induced antrum formation by OCCs and maintained meiotic arrest of oocytes during culture, whereas rolipram neither promoted antrum formation nor maintained oocyte meiotic arrest. Gap junctional communication between oocytes and cumulus cells was maintained by IBMX and cilostamide, but not by rolipram as judged by the transfer of injected lucifer yellow dye from oocytes to cumulus cells. In subsequent in vitro maturation, oocytes grown with IBMX, cilostamide and milrinone showed full maturation competence. These results suggest that PDE3A inhibition maintains the meiotic arrest of bovine growing oocytes and sustains their gap junctional communication with cumulus cells for 5 days, thereby contributing to their acquisition of full maturation competence.
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Acuña-Hernández DG, Arreola-Mendoza L, Santacruz-Márquez R, García-Zepeda SP, Parra-Forero LY, Olivares-Reyes JA, Hernández-Ochoa I. Bisphenol A alters oocyte maturation by prematurely closing gap junctions in the cumulus cell-oocyte complex. Toxicol Appl Pharmacol 2018; 344:13-22. [DOI: 10.1016/j.taap.2018.02.011] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2017] [Revised: 02/14/2018] [Accepted: 02/15/2018] [Indexed: 10/18/2022]
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Cao H, Bian Y, Zhang F, Tang Y, Li C, Chen J, Zhang X. Functional role of Forskolin and PD166285 in the development of denuded mouse oocytes. ASIAN-AUSTRALASIAN JOURNAL OF ANIMAL SCIENCES 2017; 31:344-353. [PMID: 28920413 PMCID: PMC5838339 DOI: 10.5713/ajas.17.0441] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/08/2017] [Revised: 07/08/2017] [Accepted: 09/04/2017] [Indexed: 12/21/2022]
Abstract
OBJECTIVE cAMP and mature promoting factor (MPF) play critical roles during the maturation of mammalian oocytes. The aim of this study was to produce the offspring from denuded oocytes (DOs) in mice by regulating cAMP and MPF. METHODS In this study, we used DOs at the germinal vesicle (GV) stage in mice and regulated levels of cAMP and MPF in DOs by adding Forskolin and PD166285 during in vitro maturation without follicle stimulating hormone and luteinizing hormone, respectively. RESULTS Combined use of 50 μM Forskolin for 3 h and 2.5 μM PD166285 for additional 21 h enhanced the developmental competence of DOs, maturation rate of DOs was 76.71%± 4.11%, blastocyst rate was 18.33%±4.44% after parthenogenetic activation (PA). The DOs could successfully be fertilized with sperm in vitro, cleavage rate was 17.02%±5.82% and blastocyst rate was 5.65%±3.10%. Besides, 2-cell in vitro fertilization embryos from DOs produced 4 normal live offspring (4/34). CONCLUSION The results confirmed that the combination of Forskolin and PD166285 can induce DOs to complete meiosis process and produce normal offspring.
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Affiliation(s)
- Hongguo Cao
- College of Animal Science and Technology, Anhui Agricultural University, Hefei 230036, China.,Anhui Provincial Laboratory of Local Animal Genetic Resources Conservation and Biobreeding, Hefei 230036, China
| | - Yani Bian
- College of Animal Science and Technology, Anhui Agricultural University, Hefei 230036, China
| | - Fei Zhang
- College of Animal Science and Technology, Anhui Agricultural University, Hefei 230036, China
| | - Yunshu Tang
- College of Animal Science and Technology, Anhui Agricultural University, Hefei 230036, China
| | - Caixia Li
- College of Animal Science and Technology, Anhui Agricultural University, Hefei 230036, China
| | - Jiemei Chen
- College of Animal Science and Technology, Anhui Agricultural University, Hefei 230036, China
| | - Xiaorong Zhang
- College of Animal Science and Technology, Anhui Agricultural University, Hefei 230036, China.,Anhui Provincial Laboratory of Local Animal Genetic Resources Conservation and Biobreeding, Hefei 230036, China
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Prochazka R, Blaha M, Němcová L. Significance of epidermal growth factor receptor signaling for acquisition of meiotic and developmental competence in mammalian oocytes†. Biol Reprod 2017; 97:537-549. [DOI: 10.1093/biolre/iox112] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2017] [Accepted: 08/30/2017] [Indexed: 12/28/2022] Open
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Cho SJ, Lee KL, Kim YG, Kim DH, Yoo JG, Yang BC, Park JK, Kong IK. Differential gene-expression profiles from canine cumulus cells of ovulated versus in vitro-matured oocytes. Reprod Fertil Dev 2017; 28:278-85. [PMID: 25004936 DOI: 10.1071/rd14086] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2014] [Accepted: 05/18/2014] [Indexed: 11/23/2022] Open
Abstract
We compared the nuclear maturation status and gene-expression profiles of canine cumulus cells (CCs) derived from cumulus-oocyte complexes (COCs) that were spontaneously ovulated versus those that were matured in vitro. Cumulus-oocyte complexes were retrieved from uteri by surgical flushing (after spontaneous ovulation) or by ovariectomy follicle aspiration and in vitro maturation. The objective of Experiment 1 was to investigate the nuclear maturation status of in vivo- versus in vitro-matured oocytes. The objective of Experiment 2 was to compare gene-expression profiles of CCs derived from in vivo- versus in vitro-matured COCs. Genes analysed are related to cell maturation, development and apoptosis, including GDF9, MAPK1, PTX3, CX43, Bcl2 and BAX; mRNA expression for all of these genes, except for GDF9, differed (P<0.05) between in vivo- and in vitro-matured CCs. In conclusion, we found that gene-expression profiles are related to the quality of CCs and therefore posit that monitoring gene expression could be a useful strategy to guide attempts to improve in vitro culture systems.
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Affiliation(s)
- Su-Jin Cho
- Department of Animal Science, Division of Applied Life Science, Gyeongsang National University, Jinju 660-701, Gyeongsangnam-Do, Republic of Korea
| | - Kyeong-Lim Lee
- Department of Animal Science, Division of Applied Life Science, Gyeongsang National University, Jinju 660-701, Gyeongsangnam-Do, Republic of Korea
| | - Yu-Gon Kim
- Department of Animal Science, Division of Applied Life Science, Gyeongsang National University, Jinju 660-701, Gyeongsangnam-Do, Republic of Korea
| | - Dong-Hoon Kim
- Animal Biotechnology Division, National Institute of Animal Science, Suwon 441-706, Gyeonggi-Do, Republic of Korea
| | - Jae-Gyu Yoo
- Dairy Science Division, National Institute of Animal Science, Cheonan 331-801, Chungcheongnam-Do, Republic of Korea
| | - Byoung-Chul Yang
- Animal Biotechnology Division, National Institute of Animal Science, Suwon 441-706, Gyeonggi-Do, Republic of Korea
| | - Jin-Ki Park
- Animal Biotechnology Division, National Institute of Animal Science, Suwon 441-706, Gyeonggi-Do, Republic of Korea
| | - Il-Keun Kong
- Department of Animal Science, Division of Applied Life Science, Gyeongsang National University, Jinju 660-701, Gyeongsangnam-Do, Republic of Korea
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Campen KA, McNatty KP, Pitman JL. A protective role of cumulus cells after short-term exposure of rat cumulus cell-oocyte complexes to lifestyle or environmental contaminants. Reprod Toxicol 2017; 69:19-33. [PMID: 28087314 DOI: 10.1016/j.reprotox.2017.01.003] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2016] [Accepted: 01/05/2017] [Indexed: 01/07/2023]
Abstract
Ovarian follicular fluid provides a potential reservoir for exogenous compounds that may adversely affect oocyte quality. This study examined the effects of common lifestyle and environmental contaminants, namely bisphenol-A (BPA), caffeine, 3,4-methylenedioxymethamphetamine (MDMA), nicotine and Δ9-tetrahydrocannabinol (THC) on gap junction genes (Gja1, Gja4) and proteins (GJA1), glucose metabolism genes (Gfpt1, Pfkp) and oocyte growth factor genes (Bmp15, Gdf9), as well as gap junction transfer rate, in rat cumulus-oocyte complexes (COCs). In vitro exposure to MDMA and THC accelerated the timing of meiotic resumption and all contaminants altered either gap junction gene expression (BPA, caffeine, MDMA and THC) or transfer rate (BPA and nicotine). In vitro exposure of COCs to MDMA also altered glucose metabolism genes. Overall, oocyte-derived genes were largely unaffected following exposure to any contaminant. In summary, the impact of short-term exposure to lifestyle and environmental contaminants on oocyte function may be diminished due to protective properties of cumulus cells.
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Affiliation(s)
- Kelly A Campen
- School of Biological Sciences, Victoria University of Wellington, PO Box 600, Wellington 6140, New Zealand
| | - Kenneth P McNatty
- School of Biological Sciences, Victoria University of Wellington, PO Box 600, Wellington 6140, New Zealand
| | - Janet L Pitman
- School of Biological Sciences, Victoria University of Wellington, PO Box 600, Wellington 6140, New Zealand.
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Palmerini MG, Nottola SA, Tunjung WAS, Kadowaki A, Bianchi S, Cecconi S, Sato E, Macchiarelli G. EGF-FSH supplementation reduces apoptosis of pig granulosa cells in co-culture with cumulus-oocyte complexes. Biochem Biophys Res Commun 2016; 481:159-164. [PMID: 27816448 DOI: 10.1016/j.bbrc.2016.10.151] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2016] [Accepted: 10/31/2016] [Indexed: 11/28/2022]
Abstract
In cattle breeding, co-culture with granulosa cells (GCs) is one of the strategies to improve oocyte maturation and fertilization potential, but yields are still suboptimal due to GC apoptosis. We previously set up an in vitro co-culture system of cumulus-oocyte-complexes (COCs) anchored to GC multilayers adhering to the basal lamina (COCGs), in which GC apoptosis was inhibited by FSH supplementation. Here, we assessed the antiapoptotic effect of EGF (5 ng/ml-EGF5) alone or in synergism to FSH (50mU/ml-FSH50) on pig COCGs. COCG morphology, apoptotic rate, procaspase-8 and-9 expression levels and surface ultrastructure were determined. Results showed an increased % of apoptotic GCs in control and EGF5 (≈80%) respect to sampling (≈3%) and caspase-8 and -9 activation. In contrast, apoptotic cells were significantly reduced by FSH50 (≈35%) supplementation, with inactive Procaspase-8 and -9 highly expressed. The pro-survival effect of FSH was strengthened by EGF (EGF5+FSH50), as evidenced by a significant reduction of apoptosis (≈15%) and high expression levels of Procaspase-8 and -9. Ultrastructural analysis revealed that GC multilayers were characterized by round-to-ovoid cells connected each other and to the basal lamina by cytoplasmic projections. Microvilli shortening/thickening/reduction, cytoplasmic projection rarefaction, blebbing of apoptotic bodies and degenerating/atresic GCs were observed in control and EGF5 groups. FSH50 induced the formation of an abundant mucinous matrix, due to granulosa expansion. Blebs and atresic areas were rarely observed. In EGF5+FSH50 group, GCs were well-preserved, richly covered by microvilli and connected by numerous cytoplasmic projections. Degenerative phenomena were rarely observed. In conclusion, EGF in synergism with FSH seems to better counteract GC apoptosis in a co-culture of pig GC multilayers.
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Affiliation(s)
- Maria Grazia Palmerini
- Dept. of Life, Health and Environmental Sciences, University of L'Aquila, L'Aquila, Italy.
| | - Stefania Annarita Nottola
- Dept. of Anatomy, Histology, Forensic Medicine and Orthopaedics, La Sapienza University, Rome, Italy
| | - Woro Anidito Sri Tunjung
- Laboratory of Biochemistry, Faculty of Biology, Universitas Gadjah Mada Indonesia, Indonesia; Laboratory of Animal Reproduction, Graduate School of Agricultural Sciences, Tohoku University, Sendai, Japan
| | - Akane Kadowaki
- Laboratory of Animal Reproduction, Graduate School of Agricultural Sciences, Tohoku University, Sendai, Japan
| | - Serena Bianchi
- Dept. of Life, Health and Environmental Sciences, University of L'Aquila, L'Aquila, Italy
| | - Sandra Cecconi
- Dept. of Life, Health and Environmental Sciences, University of L'Aquila, L'Aquila, Italy
| | - Eimei Sato
- Laboratory of Animal Reproduction, Graduate School of Agricultural Sciences, Tohoku University, Sendai, Japan
| | - Guido Macchiarelli
- Dept. of Life, Health and Environmental Sciences, University of L'Aquila, L'Aquila, Italy
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Prochazka R, Blaha M. Regulation of mitogen-activated protein kinase 3/1 activity during meiosis resumption in mammals. J Reprod Dev 2016; 61:495-502. [PMID: 26688146 PMCID: PMC4685214 DOI: 10.1262/jrd.2015-069] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
In vivo, resumption of oocyte meiosis occurs in large ovarian follicles after the
preovulatory surge of luteinizing hormone (LH). The LH surge leads to the activation of a broad signaling
network in mural granulosa cells equipped with LH receptors. The signals generated in the mural granulosa
cells are further augmented by locally produced peptides or steroids and transferred to the cumulus cell
compartment and the oocyte itself. Over the last decade, essential progress has been made in the
identification of molecular events associated with the final maturation and ovulation of mammalian oocytes.
All new evidence argues for a multiple roles of mitogen-activated protein kinase 3/1 (MAPK3/1) in the
gonadotropin-induced ovulation processes. However, the knowledge of gonadotropin-induced signaling pathways
leading to MAPK3/1 activation in follicular cells seems limited. To date, only the LH-induced transactivation
of the epidermal growth factor receptor/MAPK3/1 pathway has been described in granulosa/cumulus cells even
though other mechanisms of MAPK3/1 activation have been detected in other types of cells. In this review, we
aimed to summarize recent advances in the elucidation of gonadotropin-induced mechanisms leading to the
activation of MAPK3/1 in preovulatory follicles and cultured cumulus-oocyte complexes and to point out a
specific role of this kinase in the processes accompanying final maturation of the mammalian oocyte.
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Affiliation(s)
- Radek Prochazka
- Laboratory of Developmental Biology, Institute of Animal Physiology and Genetics, Czech Academy of Sciences, 277 21 Libechov, Czech Republic
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36
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Van Blerkom J, Zimmermann S. Ganglioside-enriched microdomains define an oolemma that is functionally polarized with respect to fertilizability in the mouse. Reprod Biomed Online 2016; 33:458-475. [DOI: 10.1016/j.rbmo.2016.06.029] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2015] [Revised: 06/17/2016] [Accepted: 06/29/2016] [Indexed: 10/21/2022]
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Souza-Fabjan JMG, Locatelli Y, Duffard N, Corbin E, Batista RITP, de Figueirêdo Freitas VJ, Beckers JF, Mermillod P. Intrinsic quality of goat oocytes already found denuded at collection for in vitro embryo production. Theriogenology 2016; 86:1989-98. [PMID: 27453560 DOI: 10.1016/j.theriogenology.2016.06.021] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2016] [Revised: 06/07/2016] [Accepted: 06/17/2016] [Indexed: 01/09/2023]
Abstract
Although cumulus cells are essential for efficient oocyte maturation, the establishment of protocols that support IVD of embryos obtained from denuded oocytes (DOCs) is important for optimizing the use of reproductive biotechnologies. Thus, this study aimed to establish a protocol for IVD of goat DOC using different strategies of IVM and methods of oocyte activation. Four experiments were performed. Similar developmental competence of slaughterhouse DOC was obtained, regardless of maturation media (complex, semidefined or simplified). However, the ability to reach the blastocyst stage was affected by the activation method. Denuded oocytes subjected to parthenogenetic activation had greater (P < 0.05) development capacity, compared with those undergoing IVF with average cleavage rate of 83% and 75%, blastocyst rate of 49% and 28%, and blastocysts in relation to the cleaved embryos of 59% and 38, respectively. In addition, the quality of embryos evaluated after vitrification/warming was similar between parthenogenetic activation and IVF. Finally, we demonstrated that the coculture of cumulus-oocyte complex (COC) with DOC increased the competence of DOC at a ratio of 1:1 and 1:9 (DOC:COC). We believe that presence of cumulus cells (CCs) is not essential to the meiotic maturation, if at the time of removal of the oocyte from follicular environment, they already acquired competence to development. However, when the oocytes still need to acquire competence, the presence of CC may significantly contribute in their developmental capacity acquisition during IVM. Thus, regardless of the source, these oocytes will require longer time in IVM, contrary to what happens in the absence of CC. In conclusion, although DOC had a lower developmental potential, especially after IVF, they were able to produce blastocysts and the coculture of DOC with COC increased this developmental capacity.
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Affiliation(s)
- Joanna Maria Gonçalves Souza-Fabjan
- INRA, UMR7247, Physiologie de la Reproduction et des Comportements, INRA, CNRS, Université de Tours, Haras Nationaux, Nouzilly, France; Laboratory of Physiology and Control of Reproduction, Veterinary School, State University of Ceará, Fortaleza, CE, Brazil.
| | - Yann Locatelli
- INRA, UMR7247, Physiologie de la Reproduction et des Comportements, INRA, CNRS, Université de Tours, Haras Nationaux, Nouzilly, France; Museum National d'Histoire Naturelle, Réserve de la Haute Touche, Obterre, France
| | - Nicolas Duffard
- INRA, UMR7247, Physiologie de la Reproduction et des Comportements, INRA, CNRS, Université de Tours, Haras Nationaux, Nouzilly, France; Museum National d'Histoire Naturelle, Réserve de la Haute Touche, Obterre, France
| | - Emilie Corbin
- INRA, UMR7247, Physiologie de la Reproduction et des Comportements, INRA, CNRS, Université de Tours, Haras Nationaux, Nouzilly, France
| | | | | | - Jean-François Beckers
- Laboratory of Endocrinology, Faculty of Veterinary Medicine, University of Liège, Liège, Belgium
| | - Pascal Mermillod
- INRA, UMR7247, Physiologie de la Reproduction et des Comportements, INRA, CNRS, Université de Tours, Haras Nationaux, Nouzilly, France
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Ferré P, Bui TMT, Wakai T, Funahashi H. Effect of removing cumulus cells from porcine cumulus-oocyte complexes derived from small and medium follicles during IVM on the apoptotic status and meiotic progression of the oocytes. Theriogenology 2016; 86:1705-10. [PMID: 27329157 DOI: 10.1016/j.theriogenology.2016.05.024] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2016] [Revised: 05/11/2016] [Accepted: 05/20/2016] [Indexed: 12/21/2022]
Abstract
The present study was undertaken to examine the apoptotic status and meiotic progression of oocytes from small follicle (SF; 0.5-2 mm in diameter) and medium follicle (MF; 3-6 mm in diameter) when the oocytes were denuded before, during, and after IVM. Cumulus-oocyte complexes (COCs) were collected from SF or MF of prepubertal gilt ovaries. Before or 20 hours after the start of IVM culture, some oocytes were denuded and cultured for IVM. At the end of IVM, apoptotic status and meiotic progression of the oocytes were compared with oocytes matured in the presence of cumulus cells (CCs) by Annexin-V/PI assay and 4',6-Diamidino-2-phenylindole staining. Apoptotic status of the oocytes was only affected by time when the oocytes were denuded. In both oocytes from SF and MF, although the incidence of early and late apoptotic oocytes was significantly higher when the CCs were removed before IVM, the rate was significantly lower when CCs were removed 20 and 44 hours after the start of IVM. The incidence of mature oocytes was significantly affected by both the origin of COCs and time when oocytes were denuded from the COCs. Although the percentage of mature oocytes was higher in MF than SF, maturation rates were significantly higher when oocytes were denuded 20 hours, as compared with 0 and 44 hours after the start of IVM. However, the percentage of mature oocytes with a morphologically normal spindle was significantly higher when oocytes were denuded 44 hours, rather than 22 hours of IVM. In conclusion, removing CCs 20 hours after the start of IVM seems to promote meiotic progression of the oocytes to the metaphase-II stage even when the COCs were collected from SF, although factor(s) from or communication with CCs during IVM may need to obtain a morphologically normal spindle in mature oocytes.
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Affiliation(s)
- Pilar Ferré
- Department of Animal Science, Graduate School of Environmental and Life Science, Okayama University, Okayama, Japan
| | - Tra Mi Thi Bui
- Department of Animal Science, Graduate School of Environmental and Life Science, Okayama University, Okayama, Japan
| | - Takuya Wakai
- Department of Animal Science, Graduate School of Environmental and Life Science, Okayama University, Okayama, Japan
| | - Hiroaki Funahashi
- Department of Animal Science, Graduate School of Environmental and Life Science, Okayama University, Okayama, Japan.
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Domínguez A, Salazar Z, Arenas E, Betancourt M, Ducolomb Y, González-Márquez H, Casas E, Teteltitla M, Bonilla E. Effect of perfluorooctane sulfonate on viability, maturation and gap junctional intercellular communication of porcine oocytes in vitro. Toxicol In Vitro 2016; 35:93-9. [PMID: 27233358 DOI: 10.1016/j.tiv.2016.05.011] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2015] [Revised: 05/21/2016] [Accepted: 05/23/2016] [Indexed: 01/09/2023]
Abstract
Perfluorooctane sulfonate (PFOS) is a broadly used man-made surfactant whose long half-life has led to bioaccumulation. This perfluorinated compound is ubiquitous in human body fluids. PFOS concentrations as high as 26μM in plasma have been reported in occupationally exposed populations, and high levels of PFOS in human follicular fluid have been associated with subfertility. However, the effect of PFOS on the maturation of oocytes in mammals has not been reported to date. The aim of this study was to determine the effects of PFOS during oocyte maturation. Results indicate that PFOS inhibits oocyte viability (Lethal Concentration50=32μM) and maturation (inhibition of maturation50=22μM) at physiologically relevant concentrations. In order to evaluate the mechanisms of oocyte maturation inhibition by PFOS, gap junctional intercellular communication (GJIC) between oocytes and granulosa cells was assessed. GJIC between granulosa cells and the oocyte was significantly affected during the first 8h of maturation. However, the inhibitory effect of PFOS on GJIC was not due to an alteration on the expression of connexin genes Cx43, Cx45 and Cx60. These findings suggest that occupationally exposed populations could be at risk, and that PFOS might affect oocyte maturation by interfering the GJIC in the cumulus-oocyte complexes during the first hours of maturation.
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Affiliation(s)
- A Domínguez
- Departamento de Ciencias de la Salud, Universidad Autónoma Metropolitana-Iztapalapa, Av. San Rafael Atlixco 186, 09340 CDMX, Mexico; Maestría en Biología de la Reproducción Animal, División de Ciencias Biológicas y de la Salud, Universidad Autónoma Metropolitana-Iztapalapa, Av. San Rafael Atlixco 186, 09340 CDMX, Mexico
| | - Z Salazar
- Departamento de Ciencias de la Salud, Universidad Autónoma Metropolitana-Iztapalapa, Av. San Rafael Atlixco 186, 09340 CDMX, Mexico
| | - E Arenas
- Departamento de Biología de la Reproducción, Universidad Autónoma Metropolitana-Iztapalapa, Av. San Rafael Atlixco 186, 09340 CDMX, Mexico
| | - M Betancourt
- Departamento de Ciencias de la Salud, Universidad Autónoma Metropolitana-Iztapalapa, Av. San Rafael Atlixco 186, 09340 CDMX, Mexico
| | - Y Ducolomb
- Departamento de Ciencias de la Salud, Universidad Autónoma Metropolitana-Iztapalapa, Av. San Rafael Atlixco 186, 09340 CDMX, Mexico
| | - H González-Márquez
- Departamento de Ciencias de la Salud, Universidad Autónoma Metropolitana-Iztapalapa, Av. San Rafael Atlixco 186, 09340 CDMX, Mexico
| | - E Casas
- Departamento de Ciencias de la Salud, Universidad Autónoma Metropolitana-Iztapalapa, Av. San Rafael Atlixco 186, 09340 CDMX, Mexico
| | - M Teteltitla
- Departamento de Ciencias de la Salud, Universidad Autónoma Metropolitana-Iztapalapa, Av. San Rafael Atlixco 186, 09340 CDMX, Mexico; Maestría en Biología de la Reproducción Animal, División de Ciencias Biológicas y de la Salud, Universidad Autónoma Metropolitana-Iztapalapa, Av. San Rafael Atlixco 186, 09340 CDMX, Mexico
| | - E Bonilla
- Departamento de Ciencias de la Salud, Universidad Autónoma Metropolitana-Iztapalapa, Av. San Rafael Atlixco 186, 09340 CDMX, Mexico.
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40
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Zhou CJ, Wu SN, Shen JP, Wang DH, Kong XW, Lu A, Li YJ, Zhou HX, Zhao YF, Liang CG. The beneficial effects of cumulus cells and oocyte-cumulus cell gap junctions depends on oocyte maturation and fertilization methods in mice. PeerJ 2016; 4:e1761. [PMID: 26966678 PMCID: PMC4782716 DOI: 10.7717/peerj.1761] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2015] [Accepted: 02/13/2016] [Indexed: 12/19/2022] Open
Abstract
Cumulus cells are a group of closely associated granulosa cells that surround and nourish oocytes. Previous studies have shown that cumulus cells contribute to oocyte maturation and fertilization through gap junction communication. However, it is not known how this gap junction signaling affects in vivo versus in vitro maturation of oocytes, and their subsequent fertilization and embryonic development following insemination. Therefore, in our study, we performed mouse oocyte maturation and insemination using in vivo- or in vitro-matured oocyte-cumulus complexes (OCCs, which retain gap junctions between the cumulus cells and the oocytes), in vitro-matured, denuded oocytes co-cultured with cumulus cells (DCs, which lack gap junctions between the cumulus cells and the oocytes), and in vitro-matured, denuded oocytes without cumulus cells (DOs). Using these models, we were able to analyze the effects of gap junction signaling on oocyte maturation, fertilization, and early embryo development. We found that gap junctions were necessary for both in vivo and in vitro oocyte maturation. In addition, for oocytes matured in vivo, the presence of cumulus cells during insemination improved fertilization and blastocyst formation, and this improvement was strengthened by gap junctions. Moreover, for oocytes matured in vitro, the presence of cumulus cells during insemination improved fertilization, but not blastocyst formation, and this improvement was independent of gap junctions. Our results demonstrate, for the first time, that the beneficial effect of gap junction signaling from cumulus cells depends on oocyte maturation and fertilization methods.
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Affiliation(s)
- Cheng-Jie Zhou
- The Research Center for Laboratory Animal Science, College of Life Science, Inner Mongolia University , Hohhot, Inner Mongolia , China
| | - Sha-Na Wu
- The Research Center for Laboratory Animal Science, College of Life Science, Inner Mongolia University , Hohhot, Inner Mongolia , China
| | - Jiang-Peng Shen
- The Research Center for Laboratory Animal Science, College of Life Science, Inner Mongolia University , Hohhot, Inner Mongolia , China
| | - Dong-Hui Wang
- The Research Center for Laboratory Animal Science, College of Life Science, Inner Mongolia University , Hohhot, Inner Mongolia , China
| | - Xiang-Wei Kong
- The Research Center for Laboratory Animal Science, College of Life Science, Inner Mongolia University , Hohhot, Inner Mongolia , China
| | - Angeleem Lu
- The Research Center for Laboratory Animal Science, College of Life Science, Inner Mongolia University , Hohhot, Inner Mongolia , China
| | - Yan-Jiao Li
- The Research Center for Laboratory Animal Science, College of Life Science, Inner Mongolia University , Hohhot, Inner Mongolia , China
| | - Hong-Xia Zhou
- The Research Center for Laboratory Animal Science, College of Life Science, Inner Mongolia University , Hohhot, Inner Mongolia , China
| | - Yue-Fang Zhao
- The Research Center for Laboratory Animal Science, College of Life Science, Inner Mongolia University , Hohhot, Inner Mongolia , China
| | - Cheng-Guang Liang
- The Research Center for Laboratory Animal Science, College of Life Science, Inner Mongolia University , Hohhot, Inner Mongolia , China
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Li HJ, Sutton-McDowall ML, Wang X, Sugimura S, Thompson JG, Gilchrist RB. Extending prematuration with cAMP modulators enhances the cumulus contribution to oocyte antioxidant defence and oocyte quality via gap junctions. Hum Reprod 2016; 31:810-21. [PMID: 26908844 DOI: 10.1093/humrep/dew020] [Citation(s) in RCA: 72] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2015] [Accepted: 01/11/2016] [Indexed: 12/17/2022] Open
Abstract
STUDY QUESTION Can bovine oocyte antioxidant defence and oocyte quality be improved by extending the duration of pre-in vitro maturation (IVM) with cyclic adenosine mono-phosphate (cAMP) modulators? SUMMARY ANSWER Lengthening the duration of cAMP-modulated pre-IVM elevates intra-oocyte reduced glutathione (GSH) content and reduces hydrogen peroxide (H2O2) via increased cumulus cell-oocyte gap-junctional communication (GJC), associated with an improvement in subsequent embryo development and quality. WHAT IS KNOWN ALREADY Oocytes are susceptible to oxidative stress and the oocyte's most important antioxidant glutathione is supplied, at least in part, by cumulus cells. A temporary inhibition of spontaneous meiotic resumption in oocytes can be achieved by preventing a fall in cAMP, and cyclic AMP-modulated pre-IVM maintains cumulus-oocyte GJC and improves subsequent embryo development. STUDY DESIGN, SIZE, DURATION This study consisted of a series of 10 experiments using bovine oocytes in vitro, each with multiple replicates. A range of pre-IVM durations were examined as the key study treatments which were compared with a control. The study was designed to examine if one of the oocyte's major antioxidant defences can be enhanced by pre-IVM with cAMP modulators, and to examine the contribution of cumulus-oocyte GJC on these processes. PARTICIPANTS/MATERIALS, SETTING, METHODS Immature bovine cumulus-oocyte complexes were treated in vitro without (control) or with the cAMP modulators; 100 µM forskolin (FSK) and 500 µM 3-isobutyl-1-methyxanthine (IBMX), for 0, 2, 4 or 6 h (pre-IVM phase) prior to IVM. Oocyte developmental competence was assessed by embryo development and quality post-IVM/IVF. Cumulus-oocyte GJC, intra-oocyte GSH and H2O2 were quantified at various time points during pre-IVM and IVM, in the presence and the absence of functional inhibitors: carbenoxolone (CBX) to block GJC and buthionine sulfoximide (BSO) to inhibit glutathione synthesis. MAIN RESULTS AND THE ROLE OF CHANCE Pre-IVM with FSK + IBMX increased subsequent blastocyst formation rate and quality compared with standard IVM (P < 0.05), regardless of pre-IVM duration. The final blastocyst yields (proportion of blastocysts/immature oocyte) were 26.3% for the control, compared with 39.2, 35.2 and 34.2%, for the 2, 4 and 6 h pre-IVM FSK + IBMX treatments, respectively. In contrast to standard IVM (control), pre-IVM with cAMP modulators maintained open gap junctions between cumulus cells and oocytes for the duration (6 h) of pre-IVM examined, and persisted for a further 8 h in the IVM phase. Cyclic AMP-modulated pre-IVM increased intra-oocyte GSH levels at the completion of both pre-IVM and IVM, in a pre-IVM duration-dependent manner (P < 0.05), which was ablated when GJC was blocked using CBX (P < 0.05). By 4 h of pre-IVM treatment with cAMP modulators, oocyte H2O2 levels were reduced compared the control (P < 0.05), although this beneficial effect was lost when oocytes were co-treated with BSO. Inhibiting glutathione synthesis with BSO during pre-IVM ablated any positive benefits of cAMP-mediated pre-IVM on oocyte developmental competence (P < 0.01). LIMITATIONS, REASONS FOR CAUTION It is unclear if the improvement in oocyte antioxidant defence and developmental competence reported here is due to direct transfer of total and/or reduced glutathione from cumulus cells to the oocyte via gap junctions, or whether a GSH synthesis signal and/or amino acid substrates are supplied to the oocyte via gap junctions. Embryo transfer experiments are required to determine if the cAMP-mediated improvement in blastocyst rates leads to improved live birth rates. WIDER IMPLICATIONS OF THE FINDINGS IVM offers significant benefits to infertile and cancer patients and has the potential to significantly alter ART practice, if IVM efficiency in embryo production could be improved closer to that of conventional IVF (using ovarian hyperstimulation). Pre-IVM with cAMP modulators is a simple and reliable means to improve IVM outcomes. STUDY FUNDING/COMPETING INTERESTS This work was supported by grants and fellowships from the National Health and Medical Research Council of Australia (1007551, 627007, 1008137, 1023210) and by scholarships from the Chinese Scholarship Council (CSC) awarded to H.J.L. and the Japanese Society for the Promotion of Science Postdoctoral Fellowship for Research Abroad awarded to S.S. The Fluoview FV10i confocal microscope was purchased as part of the Sensing Technologies for Advanced Reproductive Research (STARR) facility, funded by the South Australian Premier's Science and Research Fund. We acknowledge partial support from the Australian Research Council Centre of Excellence for Nanoscale BioPhotonics (CE140100003). We declare that there is no conflict of interest that could be perceived as prejudicing the impartiality of the research reported.
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Affiliation(s)
- H J Li
- Robinson Research Institute & School of Medicine, The University of Adelaide, Adelaide SA 5005, Australia College of Veterinary Medicine, Inner Mongolia Agricultural University, Hohhot 010018, China
| | - M L Sutton-McDowall
- Robinson Research Institute & School of Medicine, The University of Adelaide, Adelaide SA 5005, Australia Australian Research Council Centre of Excellence for Nanoscale BioPhotonics, Adelaide, Australia
| | - X Wang
- Robinson Research Institute & School of Medicine, The University of Adelaide, Adelaide SA 5005, Australia
| | - S Sugimura
- Robinson Research Institute & School of Medicine, The University of Adelaide, Adelaide SA 5005, Australia Department of Biological Production, Institute of Agriculture, Tokyo University of Agriculture and Technology, Tokyo 183-8509, Japan
| | - J G Thompson
- Robinson Research Institute & School of Medicine, The University of Adelaide, Adelaide SA 5005, Australia Australian Research Council Centre of Excellence for Nanoscale BioPhotonics, Adelaide, Australia
| | - R B Gilchrist
- Robinson Research Institute & School of Medicine, The University of Adelaide, Adelaide SA 5005, Australia Discipline of Obstetrics & Gynaecology, School of Women's & Children's Health, University of New South Wales, Sydney 2013, Australia
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Bezerra F, Silva A, Rissi V, Rosa P, Cesaro M, Costa J, Gonçalves P, Silva J. Cilostamide and follicular hemisections inhibit oocyte meiosis resumption and regulate gene expression and cAMP levels in bovine cumulus-oocyte complexes. Livest Sci 2016. [DOI: 10.1016/j.livsci.2015.12.014] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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Blaha M, Nemcova L, Prochazka R. Cyclic guanosine monophosphate does not inhibit gonadotropin-induced activation of mitogen-activated protein kinase 3/1 in pig cumulus-oocyte complexes. Reprod Biol Endocrinol 2015; 13:1. [PMID: 25567742 PMCID: PMC4293816 DOI: 10.1186/1477-7827-13-1] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/30/2014] [Accepted: 12/24/2014] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Recent results indicate a key role for cyclic guanosine monophosphate (cGMP) in the regulation of oocyte meiotic arrest in preovulatory mammalian follicles. The aim of our study was to determine whether the resumption of oocyte meiosis and expansion of cumulus cells in isolated pig cumulus-oocyte complexes (COCs) can be blocked by a high intracellular concentration of cGMP, and whether this effect is mediated by a cGMP-dependent inhibition of mitogen-activated protein kinase 3/1 (MAPK3/1). METHODS The COCs were isolated from ovaries of slaughtered gilts and cultured in vitro in M199 supplemented with 5% fetal calf serum. The expression levels of the C-type natriuretic peptide (CNP) precursor (NPPC) and its receptor (NPR2) mRNAs during the culture of COCs were determined by real-time RT-PCR. To control the intracellular concentration of cGMP in the COCs, the culture medium was further supplemented with CNP or various concentrations of synthetic cGMP analogues; the concentration of cGMP in COCs was then assessed by ELISA. The effect of the drugs on oocyte maturation was assessed after 24 and 44 h of culture by determining nuclear maturation. The expansion of cumulus cells was assessed by light microscopy and the expression of cumulus expansion-related genes by real-time RT-PCR. A possible effect of cGMP on FSH-induced activation of MAPK3/1 was assessed by immunoblotting the COC proteins with phospho-specific and total anti-Erk1/2 antibodies. RESULTS The COCs expressed NPPC and NPR2, the key components of cGMP synthesis, and produced a large amount of cGMP upon stimulation with exogenous CNP, which lead to a significant (P < 0.05) delay in oocyte meiotic resumption. The COCs also responded to cGMP analogues by inhibiting the resumption of oocyte meiosis. The inhibitory effect of cGMP on meiotic resumption was reversed by stimulating the COCs with FSH. However, high concentration of intracellular cGMP was not able to suppress FSH-induced activation of MAPK3/1 in cumulus cells, cumulus expansion and expression of expansion-related genes (P > 0.05). CONCLUSIONS The findings of this study indicate that high cGMP concentrations inhibit the maturation of pig oocytes in vitro but the inhibitory mechanism does not involve the suppression of MAPK3/1 activation in cumulus cells.
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Affiliation(s)
- Milan Blaha
- Laboratory of Developmental Biology, Institute of Animal Physiology and Genetics, Academy of Sciences of the Czech Republic, Rumburska 89, 277 21 Libechov, Czech Republic
| | - Lucie Nemcova
- Laboratory of Developmental Biology, Institute of Animal Physiology and Genetics, Academy of Sciences of the Czech Republic, Rumburska 89, 277 21 Libechov, Czech Republic
| | - Radek Prochazka
- Laboratory of Developmental Biology, Institute of Animal Physiology and Genetics, Academy of Sciences of the Czech Republic, Rumburska 89, 277 21 Libechov, Czech Republic
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Santiquet N, Sasseville M, Laforest M, Guillemette C, Gilchrist RB, Richard FJ. Activation of 5' adenosine monophosphate-activated protein kinase blocks cumulus cell expansion through inhibition of protein synthesis during in vitro maturation in Swine. Biol Reprod 2014; 91:51. [PMID: 25031357 DOI: 10.1095/biolreprod.113.116764] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
The serine/threonine kinase 5' adenosine monophosphate-activated protein kinase (AMPK), a heterotrimeric protein known as a metabolic switch, is involved in oocyte nuclear maturation in mice, cattle, and swine. The present study analyzed AMPK activation in cumulus cell expansion during in vitro maturation (IVM) of porcine cumulus-oocyte complexes (COC). 5-Aminoimidazole-4-carboxamide-1-beta-d-ribofuranoside (AICAR) is a well-known activator of AMPK. It inhibited oocyte meiotic resumption in COC. Moreover, cumulus cell expansion did not occur in the presence of AICAR, demonstrating its marked impact on cumulus cells. Activation of AMPK was supported by AICAR-mediated phosphorylation of alpha AMPK subunits. Furthermore, the presence of AICAR increased glucose uptake, a classical response to activation of this metabolic switch in response to depleted cellular energy levels. Neither nuclear maturation nor cumulus expansion was reversed by glucosamine, an alternative substrate in hyaluronic acid synthesis, through the hexosamine biosynthetic pathway, which ruled out possible depletion of substrates. Both increased gap junction communication and phosphodiesterase activity in COC are dependent on protein synthesis during the initial hours of IVM; however, both were inhibited in the presence of AICAR, which supports the finding that activation of AMPK by AICAR mediated inhibition of protein synthesis. Moreover, this protein synthesis inhibition was equivalent to that of the well-known protein synthesis inhibitor cycloheximide, as observed on cumulus expansion and protein concentration. Finally, the phosphorylation level of selected kinases was investigated. The pattern of raptor phosphorylation is supportive of activation of AMPK-mediated inhibition of protein synthesis. In conclusion, AICAR-mediated AMPK activation in porcine COC inhibited cumulus cell expansion and protein synthesis. These results bring new considerations to the importance of this kinase in ovarian physiology and to the development of new oocyte culture medium.
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Affiliation(s)
- Nicolas Santiquet
- Centre de Recherche en Biologie de la Reproduction, Département des Sciences Animales, Faculté des sciences de l'agriculture et de l'alimentation, Université Laval, Québec, Québec, Canada
| | - Maxime Sasseville
- Centre de Recherche en Biologie de la Reproduction, Département des Sciences Animales, Faculté des sciences de l'agriculture et de l'alimentation, Université Laval, Québec, Québec, Canada
| | - Martin Laforest
- Centre de Recherche en Biologie de la Reproduction, Département des Sciences Animales, Faculté des sciences de l'agriculture et de l'alimentation, Université Laval, Québec, Québec, Canada
| | - Christine Guillemette
- Centre de Recherche en Biologie de la Reproduction, Département des Sciences Animales, Faculté des sciences de l'agriculture et de l'alimentation, Université Laval, Québec, Québec, Canada
| | - Robert B Gilchrist
- Robinson Institute, Research Centre for Reproductive Health, School of Paediatrics and Reproductive Health, Medical School, University of Adelaide, Adelaide, Australia
| | - François J Richard
- Centre de Recherche en Biologie de la Reproduction, Département des Sciences Animales, Faculté des sciences de l'agriculture et de l'alimentation, Université Laval, Québec, Québec, Canada
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Sugimura S, Ritter LJ, Sutton-McDowall ML, Mottershead DG, Thompson JG, Gilchrist RB. Amphiregulin co-operates with bone morphogenetic protein 15 to increase bovine oocyte developmental competence: effects on gap junction-mediated metabolite supply. ACTA ACUST UNITED AC 2014; 20:499-513. [DOI: 10.1093/molehr/gau013] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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Nielsen MS, Axelsen LN, Sorgen PL, Verma V, Delmar M, Holstein-Rathlou NH. Gap junctions. Compr Physiol 2013; 2:1981-2035. [PMID: 23723031 DOI: 10.1002/cphy.c110051] [Citation(s) in RCA: 298] [Impact Index Per Article: 27.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Gap junctions are essential to the function of multicellular animals, which require a high degree of coordination between cells. In vertebrates, gap junctions comprise connexins and currently 21 connexins are known in humans. The functions of gap junctions are highly diverse and include exchange of metabolites and electrical signals between cells, as well as functions, which are apparently unrelated to intercellular communication. Given the diversity of gap junction physiology, regulation of gap junction activity is complex. The structure of the various connexins is known to some extent; and structural rearrangements and intramolecular interactions are important for regulation of channel function. Intercellular coupling is further regulated by the number and activity of channels present in gap junctional plaques. The number of connexins in cell-cell channels is regulated by controlling transcription, translation, trafficking, and degradation; and all of these processes are under strict control. Once in the membrane, channel activity is determined by the conductive properties of the connexin involved, which can be regulated by voltage and chemical gating, as well as a large number of posttranslational modifications. The aim of the present article is to review our current knowledge on the structure, regulation, function, and pharmacology of gap junctions. This will be supported by examples of how different connexins and their regulation act in concert to achieve appropriate physiological control, and how disturbances of connexin function can lead to disease.
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Affiliation(s)
- Morten Schak Nielsen
- Department of Biomedical Sciences and The Danish National Research Foundation Centre for Cardiac Arrhythmia, Faculty of Health Sciences, University of Copenhagen, Copenhagen, Denmark
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Sperm attachment and penetration competence in the human oocyte: a possible aetiology of fertilization failure involving the organization of oolemmal lipid raft microdomains influenced by the ΔΨm of subplasmalemmal mitochondria. Reprod Biomed Online 2013; 27:690-701. [DOI: 10.1016/j.rbmo.2013.09.011] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2013] [Revised: 09/05/2013] [Accepted: 09/11/2013] [Indexed: 12/17/2022]
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Assidi M, Richard FJ, Sirard MA. FSH in vitro versus LH in vivo: similar genomic effects on the cumulus. J Ovarian Res 2013; 6:68. [PMID: 24066945 PMCID: PMC3852229 DOI: 10.1186/1757-2215-6-68] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2013] [Accepted: 09/17/2013] [Indexed: 01/02/2023] Open
Abstract
The use of gonadotropins to trigger oocyte maturation both in vivo and in vitro has provided precious and powerful knowledge that has significantly increased our understanding of the ovarian function. Moreover, the efficacy of most assisted reproductive technologies (ART) used in both humans and livestock species relies on gonadotropin input, mainly FSH and LH. Despite the significant progress achieved and the huge impact of gonadotropins, the exact molecular pathways of the two pituitary hormones, FSH and LH, still remain poorly understood. Moreover, these pathways may not be the same when moving from the in vivo to the in vitro context. This misunderstanding of the intricate synergy between these two hormones leads to a lack of consensus about their use mainly in vitro or in ovulation induction schedules in vivo. In order to optimize their use, additional work is thus required with a special focus on comparing the in vitro versus the in vivo effects. In this context, this overview will briefly summarize the downstream gene expression pathways induced by both FSH in vitro and LH in vivo in the cumulus compartment. Based on recent microarray comparative analysis, we are reporting that in vitro FSH stimulation on cumulus cells appears to achieve at least part of the gene expression activity after in vivo LH stimulation. We are then proposing that the in vitro FSH-response of cumulus cells have similitudes with the in vivo LH-response.
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Affiliation(s)
- Mourad Assidi
- Département des Sciences Animales, Faculté de l'Agriculture et de l'Alimentation, Université Laval, Québec, QC G1K 7P4, Canada.
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Kempisty B, Ziółkowska A, Piotrowska H, Zawierucha P, Antosik P, Bukowska D, Ciesiółka S, Jaśkowski JM, Brüssow KP, Nowicki M, Zabel M. Real-time proliferation of porcine cumulus cells is related to the protein levels and cellular distribution of Cdk4 and Cx43. Theriogenology 2013; 80:411-20. [DOI: 10.1016/j.theriogenology.2013.05.016] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2013] [Revised: 05/15/2013] [Accepted: 05/16/2013] [Indexed: 01/22/2023]
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De Los Reyes M, Rojas C, Parraguez VH, Palomino J. Expression of growth differentiation factor 9 (GDF-9) during in vitro maturation in canine oocytes. Theriogenology 2013; 80:587-96. [PMID: 23849650 DOI: 10.1016/j.theriogenology.2013.06.001] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2013] [Revised: 05/30/2013] [Accepted: 06/01/2013] [Indexed: 01/16/2023]
Abstract
The aim of this study was to characterize in canine oocytes and cumulus cells the dynamic expression of growth differentiation factor 9 (GDF-9) in relation to meiotic development and cumulus expansion throughout in vitro maturation (IVM). Cumulus oocytes complexes (COCs) from ovaries of adult bitches were cultured intact for IVM during 0, 48, 72, and 96 hours. At 0 hours or after IVM, COCs were divided into two groups: one group remained with their cumulus cells and in the other group the cumulus cells were extracted. The expression levels of GDF-9 were determined in both groups using indirect immunofluorescence and Western blot analysis. For immunofluorescence assay, in vivo-matured oocytes collected from oviducts were also used as a positive control. The nuclear stage was analyzed in parallel with 4'-6-diamidino-2-phenylindole staining in denuded oocytes from all maturing groups. The intensity of fluorescence, indicative of GDF-9 expression level, decreased with time (P < 0.05). High expression was observed only in germinal vesicle nonmature oocytes; in contrast, second metaphase oocytes showed only low expression. Western blot analysis showed bands of approximately 56 kd and a split band of approximately 20 kd representing the proprotein and possibly two mature protein forms of GDF-9, respectively. The proprotein was detected in all samples, and it was highly expressed before IVM and in a lesser degree, during the first 48 hours, declining thereafter in coincidence with the expansion of the cumulus cell (P < 0.05). There was a negative correlation (r = -0.97; P < 0.05) between the expression level of GDF-9 and mucification. Mature forms were evident only in COCs, before culture and up to 48 hours of IVM. It was concluded that GDF-9 is expressed in canine oocytes and cumulus cells, mainly in the early developmental states, with low levels in mature oocytes in vitro and in vivo, representing the first approach of GDF-9 dynamic in dog oocyte maturation.
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Affiliation(s)
- Monica De Los Reyes
- Laboratory of Animal Reproduction, Faculty of Veterinary Sciences, University of Chile, Santiago, Chile.
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