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Ferrer-Roda M, Izquierdo D, Gil A, Oliveira MEF, Paramio MT. Oocyte Competence of Prepubertal Sheep and Goat Oocytes: An Assessment of Large-Scale Chromatin Configuration and Epidermal Growth Factor Receptor Expression in Oocytes and Cumulus Cells. Int J Mol Sci 2024; 25:4474. [PMID: 38674059 PMCID: PMC11049957 DOI: 10.3390/ijms25084474] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2024] [Revised: 04/05/2024] [Accepted: 04/16/2024] [Indexed: 04/28/2024] Open
Abstract
The oocyte competence of prepubertal females is lower compared to that of adults, mainly because they originate from small follicles. In adult females, the germinal vesicle (GV) and epidermal growth factor receptor (EGFR) have been associated with oocyte competence. This study aimed to analyze GV chromatin configuration and EGFR expression in prepubertal goat and sheep oocytes obtained from small (<3 mm) and large (≥3 mm) follicles and compare them with those from adults. GV chromatin was classified from diffuse to condensed as GV1, GVn, and GVc for goats and NSN, SN, and SNE for sheep. EGFR was quantified in cumulus cells (CCs) by Western blotting and in oocytes by immunofluorescence. Oocytes from prepubertal large follicles and adults exhibited highly condensed chromatin in goats (71% and 69% in GVc, respectively) and sheep (59% and 75% in SNE, respectively). In both species, EGFR expression in CCs and oocytes was higher in prepubertal large follicles than in small ones. In adult females, EGFR expression in oocytes was higher than in prepubertal large follicles. In conclusion, GV configuration and EGFR expression in CCs and oocytes were higher in the large than small follicles of prepubertal females.
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Affiliation(s)
- Mònica Ferrer-Roda
- Department of Animal and Food Science, Veterinary Faculty, Autonomous University of Barcelona, 08193 Barcelona, Spain; (M.F.-R.); (D.I.); (A.G.); (M.E.F.O.)
| | - Dolors Izquierdo
- Department of Animal and Food Science, Veterinary Faculty, Autonomous University of Barcelona, 08193 Barcelona, Spain; (M.F.-R.); (D.I.); (A.G.); (M.E.F.O.)
| | - Ana Gil
- Department of Animal and Food Science, Veterinary Faculty, Autonomous University of Barcelona, 08193 Barcelona, Spain; (M.F.-R.); (D.I.); (A.G.); (M.E.F.O.)
| | - Maria Emilia Franco Oliveira
- Department of Animal and Food Science, Veterinary Faculty, Autonomous University of Barcelona, 08193 Barcelona, Spain; (M.F.-R.); (D.I.); (A.G.); (M.E.F.O.)
- School of Agricultural and Veterinarian Sciences, São Paulo State University, São Paulo 14884-900, Brazil
| | - Maria-Teresa Paramio
- Department of Animal and Food Science, Veterinary Faculty, Autonomous University of Barcelona, 08193 Barcelona, Spain; (M.F.-R.); (D.I.); (A.G.); (M.E.F.O.)
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Edure T, Matsuno Y, Matsushita K, Maruyama N, Fujii W, Naito K, Sugiura K. Dynamics of extracellular vesicle uptake by mural granulosa cells in mice. Mol Reprod Dev 2024; 91:e23737. [PMID: 38450862 DOI: 10.1002/mrd.23737] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2023] [Revised: 01/13/2024] [Accepted: 02/20/2024] [Indexed: 03/08/2024]
Abstract
Extracellular vesicles (EVs) play an important role in the development and function of mammalian ovarian follicles. However, the mechanisms by which they are taken up by the follicular granulosa cells remain unclear. In addition, while oocytes play a pivotal role in follicular development, the possible interactions between oocyte-derived paracrine factors (ODPFs) and EV signals are unknown. Therefore, this study aimed to elucidate the mechanism of EV uptake and the effects of ODPFs on EV uptake by follicular somatic mural granulosa cells in mice. Fluorescence-labeled transferrin (TRF) and cholera toxin B (CTB), substrates for clathrin- and caveolae-mediated endocytosis, respectively, were taken up by mural granulosa cells in vitro. Their uptake was inhibited by Pitstop 2 and genistein, inhibitors of clathrin and caveolae pathways, respectively. Mural granulosa cells took up EVs, and this uptake was suppressed by Pitstop 2 and genistein. Moreover, ODPFs promoted the uptake of EVs and CTB, but not TRF, by mural granulosa cells. These results suggest that mural granulosa cells take up EVs through both clathrin- and caveolae-mediated endocytosis and that oocytes may promote caveolae-mediated endocytosis to facilitate the uptake of EVs.
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Affiliation(s)
- Taichi Edure
- Laboratory of Applied Genetics, Department of Animal Resource Sciences, Graduate School of Agricultural and Life Sciences, The University of Tokyo, Tokyo, Japan
| | - Yuta Matsuno
- Laboratory of Applied Genetics, Department of Animal Resource Sciences, Graduate School of Agricultural and Life Sciences, The University of Tokyo, Tokyo, Japan
| | - Kodai Matsushita
- Laboratory of Applied Genetics, Department of Animal Resource Sciences, Graduate School of Agricultural and Life Sciences, The University of Tokyo, Tokyo, Japan
| | - Natsumi Maruyama
- Laboratory of Applied Genetics, Department of Animal Resource Sciences, Graduate School of Agricultural and Life Sciences, The University of Tokyo, Tokyo, Japan
| | - Wataru Fujii
- Laboratory of Applied Genetics, Department of Animal Resource Sciences, Graduate School of Agricultural and Life Sciences, The University of Tokyo, Tokyo, Japan
| | - Kunihiko Naito
- Laboratory of Applied Genetics, Department of Animal Resource Sciences, Graduate School of Agricultural and Life Sciences, The University of Tokyo, Tokyo, Japan
| | - Koji Sugiura
- Laboratory of Applied Genetics, Department of Animal Resource Sciences, Graduate School of Agricultural and Life Sciences, The University of Tokyo, Tokyo, Japan
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Loureiro B, Ereno RL, Pupulim AGR, Tramontana MCVB, Tabosa HP, Barros CM, Favoreto MG. Genome-wide association study of Nelore and Angus heifers with low and high ovarian follicle counts. Anim Reprod 2024; 21:e20230110. [PMID: 38384724 PMCID: PMC10878542 DOI: 10.1590/1984-3143-ar2023-0110] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2023] [Accepted: 12/06/2023] [Indexed: 02/23/2024] Open
Abstract
The number of antral follicles is considered an important fertility trait because animals with a high follicle count (HFC) produce more oocytes and embryos per cycle. Identification of these animals by genetic markers such as single nucleotide polymorphisms (SNPs) can accelerate selection of future generations. The aim of this study was to perform a genome wide association study (GWAS) on Nelore and Angus heifers with HFC and low (LFC) antral follicle counts. The groups HFC and LFC for genotyping were formed based on the average of total follicles (≥ 3 mm) counted in each breed consistently ± standard deviation. A total of 72 Nelore heifers (32 HFC and 40 LFC) and 48 Angus heifers (21 HFC and 27 LFC) were selected and the DNA was extracted from blood and hair bulb. Genotyping was done using the Illumina Bovine HD 770K BeadChip. The GWAS analysis showed 181 and 201 SNPs with genotype/phenotype association (P ≤ 0.01) in Nelore and Angus heifers, respectively. Functional enrichment analysis was performed on candidate genes that were associated with SNPs. A total of 97 genes were associated to the 181 SNPs in the Nelore heifers and the functional analysis identified genes (ROBO1 and SLIT3) in the ROBO-SLIT pathway that can be involved in the control of germ cell migration in the ovary as it is involved in lutheal cell migration and fetal ovary development. In the Angus heifers, 57 genes were associated with the 201 SNPs, highlighting Fribilin 1 (FBN1) gene, involved in regulation of growth factors directly involved in follicle activation and development. In summary, GWAS for Nelore and Angus heifers showed SNPs associated with higher follicle count phenotype. Furthermore, these findings offer valuable insights for the further investigation of potential mechanism involved in follicle formation and development, important for breeding programs for both breeds.
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Affiliation(s)
- Bárbara Loureiro
- Laboratório de Fisiologia da Reprodução Animal, Universidade Vila Velha - UVV, Vila Velha, ES, Brasil
| | - Ronaldo Luiz Ereno
- Departamento de Farmacologia, Instituto de Biociências, Universidade Estadual Paulista - UNESP, Botucatu, SP, Brasil
| | | | | | - Henrique Passos Tabosa
- Laboratório de Fisiologia da Reprodução Animal, Universidade Vila Velha - UVV, Vila Velha, ES, Brasil
| | - Ciro Moraes Barros
- Departamento de Farmacologia, Instituto de Biociências, Universidade Estadual Paulista - UNESP, Botucatu, SP, Brasil
| | - Maurício Gomes Favoreto
- Laboratório de Fisiologia da Reprodução Animal, Universidade Vila Velha - UVV, Vila Velha, ES, Brasil
- Departamento de Farmacologia, Instituto de Biociências, Universidade Estadual Paulista - UNESP, Botucatu, SP, Brasil
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Gilchrist RB, Ho TM, De Vos M, Sanchez F, Romero S, Ledger WL, Anckaert E, Vuong LN, Smitz J. A fresh start for IVM: capacitating the oocyte for development using pre-IVM. Hum Reprod Update 2024; 30:3-25. [PMID: 37639630 DOI: 10.1093/humupd/dmad023] [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: 03/06/2023] [Revised: 06/08/2023] [Indexed: 08/31/2023] Open
Abstract
BACKGROUND While oocyte IVM is practiced sporadically it has not achieved widespread clinical practice globally. However, recently there have been some seminal advances in our understanding of basic aspects of oocyte biology and ovulation from animal studies that have led to novel approaches to IVM. A significant recent advance in IVM technology is the use of biphasic IVM approaches. These involve the collection of immature oocytes from small antral follicles from minimally stimulated patients/animals (without hCG-priming) and an ∼24 h pre-culture of oocytes in an advanced culture system ('pre-IVM') prior to IVM, followed by routine IVF procedures. If safe and efficacious, this novel procedure may stand to make a significant impact on human ART practices. OBJECTIVE AND RATIONALE The objectives of this review are to examine the major scientific advances in ovarian biology with a unique focus on the development of pre-IVM methodologies, to provide an insight into biphasic IVM procedures, and to report on outcomes from animal and clinical human data, including safety data. The potential future impact of biphasic IVM on ART practice is discussed. SEARCH METHODS Peer review original and review articles were selected from PubMed and Web of Science searches for this narrative review. Searches were performed using the following keywords: oocyte IVM, pre-IVM, biphasic IVM, CAPA-IVM, hCG-triggered/primed IVM, natural cycle IVF/M, ex-vivo IVM, OTO-IVM, oocyte maturation, meiotic competence, oocyte developmental competence, oocyte capacitation, follicle size, cumulus cell (CC), granulosa cell, COC, gap-junction communication, trans-zonal process, cAMP and IVM, cGMP and IVM, CNP and IVM, EGF-like peptide and IVM, minimal stimulation ART, PCOS. OUTCOMES Minimizing gonadotrophin use means IVM oocytes will be collected from small antral (pre-dominant) follicles containing oocytes that are still developing. Standard IVM yields suboptimal clinical outcomes using such oocytes, whereas pre-IVM aims to continue the oocyte's development ex vivo, prior to IVM. Pre-IVM achieves this by eliciting profound cellular changes in the oocyte's CCs, which continue to meet the oocyte's developmental needs during the pre-IVM phase. The literature contains 25 years of animal research on various pre-IVM and biphasic IVM procedures, which serves as a large knowledge base for new approaches to human IVM. A pre-IVM procedure based on c-type natriuretic peptide (named 'capacitation-IVM' (CAPA-IVM)) has undergone pre-clinical human safety and efficacy trials and its adoption into clinical practice resulted in healthy live birth rates not different from conventional IVF. WIDER IMPLICATIONS Over many decades, improvements in clinical IVM have been gradual and incremental but there has likely been a turning of the tide in the past few years, with landmark discoveries in animal oocyte biology finally making their way into clinical practice leading to improved outcomes for patients. Demonstration of favorable clinical results with CAPA-IVM, as the first clinically tested biphasic IVM system, has led to renewed interest in IVM as an alternative, low-intervention, low-cost, safe, patient-friendly ART approach, and especially for patients with PCOS. The same new approach is being used as part of fertility preservation in patients with cancer and holds promise for social oocyte freezing.
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Affiliation(s)
- Robert B Gilchrist
- Fertility & Research Centre, Discipline of Women's Health, School of Clinical Medicine, University of New South Wales Sydney, NSW, Australia
| | - Tuong M Ho
- IVFMD, My Duc Hospital, Ho Chi Minh City, Vietnam
| | - Michel De Vos
- Brussels IVF, UZ Brussel, Brussels, Belgium
- Follicle Biology Laboratory, UZ Brussel, Vrije Universiteit Brussel, Brussels, Belgium
| | - Flor Sanchez
- Centro de Estudios e Investigaciones en Biología y Medicina Reproductiva, Lima, Peru
| | - Sergio Romero
- Laboratory of Reproductive Biology and Fertility Preservation, Cayetano Heredia University (UPCH), Lima, Peru
- Centro de Fertilidad y Reproducción Asistida, Lima, Peru
| | - William L Ledger
- Fertility & Research Centre, Discipline of Women's Health, School of Clinical Medicine, University of New South Wales Sydney, NSW, Australia
- City Fertility, Global CHA IVF Partners, Sydney, NSW, Australia
| | - Ellen Anckaert
- Follicle Biology Laboratory, UZ Brussel, Vrije Universiteit Brussel, Brussels, Belgium
| | - Lan N Vuong
- Department of Obstetrics and Gynaecology, University of Medicine and Pharmacy at Ho Chi Minh City, Ho Chi Minh City, Vietnam
| | - Johan Smitz
- Follicle Biology Laboratory, UZ Brussel, Vrije Universiteit Brussel, Brussels, Belgium
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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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Marchais M, Gilbert I, Bastien A, Macaulay A, Robert C. Mammalian cumulus-oocyte complex communication: a dialog through long and short distance messaging. J Assist Reprod Genet 2022; 39:1011-1025. [PMID: 35499777 PMCID: PMC9107539 DOI: 10.1007/s10815-022-02438-8] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2021] [Accepted: 02/13/2022] [Indexed: 12/13/2022] Open
Abstract
Communications are crucial to ovarian follicle development and to ovulation, and while both folliculogenesis and oogenesis are distinct processes, they share highly interdependent signaling pathways. Signals from distant organs such as the brain must be processed and compartments within the follicle have to be synchronized. The hypothalamic–pituitary–gonadal (HPG) axis relies on long-distance signalling analogous to wireless communication by which data is disseminated in the environment and cells equipped with the appropriate receptors receive and interpret the messages. In contrast, direct cell-to-cell transfer of molecules is a very targeted, short distance messaging system. Numerous signalling pathways have been identified and proven to be essential for the production of a developmentally competent egg. The development of the cumulus-oocyte complex relies largely on short distance communications or direct transfer type via extensions of corona radiata cells through the zona pellucida. The type of information transmitted through these transzonal projections is still largely uncharacterized. This review provides an overview of current understanding of the mechanisms by which the gamete receives and transmits information within the follicle. Moreover, it highlights the fact that in addition to the well-known systemic long-distance based communications from the HPG axis, these mechanisms acting more locally should also be considered as important targets for controlling/optimizing oocyte quality.
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Affiliation(s)
- Mathilde Marchais
- Département des sciences animales, Centre de recherche en Reproduction, Développement et Santé Intergénérationnelle (CRDSI), Réseau Québécois en Reproduction (RQR), Pavillon Paul Comtois, Université Laval, Québec, QC, Canada
| | - Isabelle Gilbert
- Département des sciences animales, Centre de recherche en Reproduction, Développement et Santé Intergénérationnelle (CRDSI), Réseau Québécois en Reproduction (RQR), Pavillon Paul Comtois, Université Laval, Québec, QC, Canada
| | - Alexandre Bastien
- Département des sciences animales, Centre de recherche en Reproduction, Développement et Santé Intergénérationnelle (CRDSI), Réseau Québécois en Reproduction (RQR), Pavillon Paul Comtois, Université Laval, Québec, QC, Canada
| | - Angus Macaulay
- Département des sciences animales, Centre de recherche en Reproduction, Développement et Santé Intergénérationnelle (CRDSI), Réseau Québécois en Reproduction (RQR), Pavillon Paul Comtois, Université Laval, Québec, QC, Canada
| | - Claude Robert
- Département des sciences animales, Centre de recherche en Reproduction, Développement et Santé Intergénérationnelle (CRDSI), Réseau Québécois en Reproduction (RQR), Pavillon Paul Comtois, Université Laval, Québec, QC, Canada.
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Jirge PR, Patil MM, Gutgutia R, Shah J, Govindarajan M, Roy VS, Kaul-Mahajan N, Sharara FI. Ovarian Stimulation in Assisted Reproductive Technology Cycles for Varied Patient Profiles: An Indian Perspective. J Hum Reprod Sci 2022; 15:112-125. [PMID: 35928474 PMCID: PMC9345274 DOI: 10.4103/jhrs.jhrs_59_22] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2022] [Revised: 06/21/2022] [Accepted: 06/23/2022] [Indexed: 11/10/2022] Open
Abstract
Controlled ovarian stimulation has been an integral part of in vitro fertilisation (IVF) treatment cycles. Availability of different gonadotropins for ovarian stimulation and gonadotropin releasing hormone (GnRH) analogues for prevention of premature rise of leutinising hormone during follicular phase offer an opportunity to utilise them for a successful outcome in women with different subsets of ovarian response. Further, use of GnRH agonist as an alternative for human chorionic gonadotropin improves safety of ovarian stimulation in hyper-responders. Mild ovarian stimulation protocols have emerged as an alternative to conventional protocols in the recent years. Individualisation plays an important role in improving safety of IVF in hyper-responders while efforts continue to improve efficacy in poor responders. Some of the follicular and peri-ovulatory phase interventions may be associated with negative impact on the luteal phase and segmentalisation of the treatment with frozen embryo transfer may be an effective strategy in such a clinical scenario. This narrative review looks at the available evidence on various aspects of ovarian stimulation strategies and their consequences. In addition, it provides a concise summary of the evidence that has emerged from India on various aspects of ovarian stimulation.
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Affiliation(s)
- Padma Rekha Jirge
- Shreyas Hospital and Sushrut Assisted Conception Clinic, Kohlhapur, India
| | | | | | - Jatin Shah
- Mumbai Fertility Clinic & IVF Centre, Mumbai, India
| | | | | | | | - Faddy I Sharara
- Virginia Center for Reproductive Medicine, Reston; Department of O&G, George Washington University, Washington, DC, USA
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Effect of cumulin and super-GDF9 in standard and biphasic mouse IVM. J Assist Reprod Genet 2022; 39:127-140. [PMID: 34984599 PMCID: PMC8866628 DOI: 10.1007/s10815-021-02382-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2021] [Accepted: 12/17/2021] [Indexed: 01/03/2023] Open
Abstract
PURPOSE In vitro maturation (IVM) is a technology that generates mature oocytes following culture of immature cumulus-oocyte complexes (COC) in vitro. IVM is characterized by minimal patient stimulation, making it attractive for certain patient groups. Recently, a biphasic IVM system, capacitation (CAPA)-IVM, has shown improved clinical outcomes relative to standard IVM; however, it remains less efficient than IVF. This study assessed whether supplementation of CAPA-IVM culture media with the novel TGFβ superfamily proteins cumulin and super-GDF9 improves subsequent mouse embryo development. METHODS Immature mouse COCs were cultured by standard IVM or biphasic IVM ± cumulin or super-GDF9. RESULTS Both cumulin and super-GDF9 in standard IVM significantly improved day-6 blastocyst rate (53.9% control, 73.6% cumulin, 70.4% super-GDF9; p = 0.006; n = 382-406 oocytes). Cumulin or super-GDF9 in CAPA-IVM did not alter embryo yield or blastocyst cell allocation in an unstimulated model. Moreover, cumulin did not alter these outcomes in a mild PMSG stimulation model. Cumulin in CAPA-IVM significantly increased cumulus cell expression of cumulus expansion genes (Ptgs2, Ptx3, Adamts1, Gfat2) and decreased Lhr expression relative to control. However, cumulin-induced mRNA expression of cumulus cell (Ptgs2, Ptx3) and oocyte genes (Gdf9, Bmp15, Oct4, Stella) in CAPA-IVM remained significantly lower than that of in vivo matured cells. CONCLUSION Cumulin did not provide an additional beneficial effect in biphasic IVM in terms of blastocyst yield and cell allocation; however in standard IVM, cumulin and super-GDF9 significantly improve oocyte developmental competence.
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Akin N, Le AH, Ha UDT, Romero S, Sanchez F, Pham TD, Nguyen MHN, Anckaert E, Ho TM, Smitz J, Vuong LN. Positive effects of amphiregulin on human oocyte maturation and its molecular drivers in patients with polycystic ovary syndrome. Hum Reprod 2021; 37:30-43. [PMID: 34741172 DOI: 10.1093/humrep/deab237] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2021] [Revised: 10/03/2021] [Indexed: 01/19/2023] Open
Abstract
STUDY QUESTION Does use of medium containing amphiregulin improve meiotic maturation efficiency in oocytes of women with polycystic ovary syndrome (PCOS) undergoing in vitro maturation (IVM) preceded by a capacitation culture step capacitation IVM (CAPA-IVM)? SUMMARY ANSWER Use of medium containing amphiregulin significantly increased the maturation rate from oocytes retrieved from follicles with diameters <6 or ≥6 mm pre-cultured in capacitation medium. WHAT IS KNOWN ALREADY Amphiregulin concentration in follicular fluid is correlated with human oocyte developmental competence. Amphiregulin added to the meiotic trigger has been shown to improve outcomes of IVM in a range of mammalian species. STUDY DESIGN, SIZE, DURATION This prospective, randomized cohort study included 30 patients and was conducted at an academic infertility centre in Vietnam from April to December 2019. Patients with PCOS were included. PARTICIPANTS/MATERIALS, SETTING, METHODS In the first stage, sibling oocytes from each patient (671 in total) were allocated in equal numbers to maturation in medium with (CAPA-AREG) or without (CAPA-Control) amphiregulin 100 ng/ml. After a maturation check and fertilization using intracytoplasmic sperm injection (ICSI), all good quality Day 3 embryos were vitrified. Cumulus cells (CCs) from both groups were collected at the moment of ICSI denudation and underwent a molecular analysis to quantify key transcripts of oocyte maturation and to relate these to early embryo development. On return for frozen embryo transfer (second stage), patients were randomized to have either CAPA-AREG or CAPA-Control embryo(s) implanted. Where no embryo(s) from the randomized group were available, embryo(s) from the other group were transferred. The primary endpoint of the study was meiotic maturation efficiency (proportion of metaphase II [MII] oocytes; maturation rate). MAIN RESULTS AND THE ROLE OF CHANCE In the per-patient analysis, the number of MII oocytes was significantly higher in the CAPA-AREG group versus the CAPA-Control group (median [interquartile range] 7.0 [5.3, 8.0] versus 6.0 [4.0, 7.0]; P = 0.01). When each oocyte was evaluated, the maturation rate was also significantly higher in the CAPA-AREG group versus the CAPA-Control group (67.6% versus 55.2%; relative risk [RR] 1.22 [95% confidence interval (CI) 1.08-1.38]; P = 0.001). No other IVM or embryology outcomes differed significantly between the two groups. Rates of clinical pregnancy (66.7% versus 42.9%; RR 1.56 [95% CI 0.77-3.14]), ongoing pregnancy (53.3% versus 28.6%; RR 1.87 [95% CI 0.72-4.85]) and live birth (46.7% versus 28.6%; RR 1.63 [95% CI 0.61-4.39]) were numerically higher in the patients who had CAPA-AREG versus CAPA-Control embryos implanted, but each fertility and obstetric outcome did not differ significantly between the groups. In the CAPA-AREG group, there were significant shifts in CC expression of genes involved in steroidogenesis (STAR, 3BHSD), the ovulatory cascade (DUSP16, EGFR, HAS2, PTGR2, PTGS2, RPS6KA2), redox and glucose metabolism (CAT, GPX1, SOD2, SLC2A1, LDHA) and transcription (NRF2). The expression of three genes (TRPM7, VCAN and JUN) in CCs showed a significant correlation with embryo quality. LIMITATIONS, REASONS FOR CAUTION This study included only Vietnamese women with PCOS, limiting the generalizability. Although 100 ng/ml amphiregulin addition to the maturation culture step significantly improved the MII rate, the sample size in this study was small, meaning that these findings should be considered as exploratory. Therefore, a larger patient cohort is needed to confirm whether the positive effects of amphiregulin translate into improved fertility outcomes in patients undergoing IVM. WIDER IMPLICATIONS OF THE FINDINGS Data from this study confirm the beneficial effects of amphiregulin during IVM with respect to the trigger of oocyte maturation. The gene expression findings in cumulus indicate that multiple pathways might contribute to these beneficial effects and confirm the key role of the epidermal growth factor system in the stepwise acquisition of human oocyte competence. STUDY FUNDING/COMPETING INTEREST(S) This work was funded by the Vietnam National Foundation for Science and Technology Development (NAFOSTED; grant number FWO.106-YS.2017.02) and by the Fund for Research Flanders (FWO; grant number G.OD97.18N). L.N.V. has received speaker and conference fees from Merck, grants, speaker and conference fees from Merck Sharpe and Dohme, and speaker, conference and scientific board fees from Ferring. T.M.H. has received speaker fees from Merck, Merck Sharp and Dohme and Ferring. J.S. reports speaker fees from Ferring Pharmaceuticals and Biomérieux Diagnostics and grants from FWO Flanders, is co-inventor on granted patents on CAPA-IVM methodologies in USA (US10392601B2), Europe (EP3234112B1) and Japan (JP 6806683 registered 08-12-2020) and is a co-shareholder of Lavima Fertility Inc., a spin-off company of the Vrije Universiteit Brussel (VUB, Brussels, Belgium). NA, TDP, AHL, MNHN, SR, FS, EA and UDTH report no financial relationships with any organizations that might have an interest in the submitted work in the previous three years, and no other relationships or activities that could appear to have influenced the submitted work. TRIAL REGISTRATION NUMBER NCT03915054.
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Affiliation(s)
- Nazli Akin
- Follicle Biology Laboratory, UZ Brussel, Vrije Universiteit Brussel, Brussel, Belgium
| | - Anh H Le
- IVFMD, My Duc Hospital, Ho Chi Minh City, Vietnam.,HOPE Research Center, My Duc Hospital, Ho Chi Minh City, Vietnam
| | - Uyen D T Ha
- IVFMD, My Duc Hospital, Ho Chi Minh City, Vietnam.,HOPE Research Center, My Duc Hospital, Ho Chi Minh City, Vietnam
| | - Sergio Romero
- Laboratory of Reproductive Biology and Fertility Preservation, Cayetano Heredia University (UPCH), Lima, Peru
| | - Flor Sanchez
- Laboratory of Reproductive Biology and Fertility Preservation, Cayetano Heredia University (UPCH), Lima, Peru
| | - Toan D Pham
- IVFMD, My Duc Hospital, Ho Chi Minh City, Vietnam.,HOPE Research Center, My Duc Hospital, Ho Chi Minh City, Vietnam
| | - Minh H N Nguyen
- IVFMD, My Duc Hospital, Ho Chi Minh City, Vietnam.,HOPE Research Center, My Duc Hospital, Ho Chi Minh City, Vietnam
| | - Ellen Anckaert
- Follicle Biology Laboratory, UZ Brussel, Vrije Universiteit Brussel, Brussel, Belgium
| | - Tuong M Ho
- IVFMD, My Duc Hospital, Ho Chi Minh City, Vietnam.,HOPE Research Center, My Duc Hospital, Ho Chi Minh City, Vietnam
| | - Johan Smitz
- Follicle Biology Laboratory, UZ Brussel, Vrije Universiteit Brussel, Brussel, Belgium
| | - Lan N Vuong
- IVFMD, My Duc Hospital, Ho Chi Minh City, Vietnam.,HOPE Research Center, My Duc Hospital, Ho Chi Minh City, Vietnam.,Department of Obstetrics and Gynecology, University of Medicine and Pharmacy at Ho Chi Minh City, Ho Chi Minh City, Vietnam
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10
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The Role of MAPK3/1 and AKT in the Acquisition of High Meiotic and Developmental Competence of Porcine Oocytes Cultured In Vitro in FLI Medium. Int J Mol Sci 2021; 22:ijms222011148. [PMID: 34681809 PMCID: PMC8537457 DOI: 10.3390/ijms222011148] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2021] [Revised: 10/12/2021] [Accepted: 10/14/2021] [Indexed: 12/27/2022] Open
Abstract
The developmental potential of porcine oocytes cultured in vitro was remarkably enhanced in a medium containing FGF2, LIF and IGF1 (FLI) when compared to a medium supplemented with gonadotropins and EGF (control). We analyzed the molecular background of the enhanced oocyte quality by comparing the time course of MAPK3/1 and AKT activation, and the expression of genes controlled by these kinases in cumulus-oocyte complexes (COCs) cultured in FLI and the control medium. The pattern of MAPK3/1 activation in COCs was very similar in both media, except for a robust increase in MAPK3/1 phosphorylation during the first hour of culture in the FLI medium. The COCs cultured in the FLI medium exhibited significantly higher activity of AKT than in the control medium from the beginning up to 16 h of culture; afterwards a deregulation of AKT activity occurred in the FLI medium, which was not observed in the control medium. The expression of cumulus cell genes controlled by both kinases was also modulated in the FLI medium, and in particular the genes related to cumulus-expansion, signaling, apoptosis, antioxidants, cell-to-cell communication, proliferation, and translation were significantly overexpressed. Collectively, these data indicate that both MAPK3/1 and AKT are implicated in the enhanced quality of oocytes cultured in FLI medium.
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11
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Bezerra FTG, Paulino LRFM, Silva BR, Silva AWB, Souza Batista ALP, Silva JRV. Effects of epidermal growth factor and progesterone on oocyte meiotic resumption and the expression of maturation-related transcripts during prematuration of oocytes from small and medium-sized bovine antral follicles. Reprod Fertil Dev 2021; 32:1190-1199. [PMID: 32943135 DOI: 10.1071/rd20099] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2020] [Accepted: 08/10/2020] [Indexed: 01/08/2023] Open
Abstract
This study evaluated the effects of epidermal growth factor (EGF) and progesterone (P4) on growth, the resumption of meiosis and expression of eukaryotic translation initiation factor 4E(eIF4E), poly(A)-specific ribonuclease (PARN), oocyte-specific histone H1 (H1FOO), oocyte maturation factor Mos (cMOS), growth differentiation factor-9 (GDF9) and cyclin B1 (CCNB1) mRNA in oocytes from small and medium-sized antral follicles after prematuration and maturation invitro. Oocytes from small (<2.0mm) and medium (3.0-6.0mm) antral follicles were cultured in medium containing EGF (10ng mL-1), P4 (100 µM) or both. After culture, growth rate, resumption of meiosis and eIF4E, PARN, H1FOO, cMOS, GDF9 and CCNB1 mRNA levels were evaluated. P4 increased cMOS, H1FOO and CCNB1 mRNA levels after the culture of oocytes from small antral follicles, and EGF increased CCNB1 mRNA levels in these oocytes. In the medium-sized antral follicles, P4 alone or in combination with EGF increased oocyte diameter after prematuration invitro. In these oocytes, the presence of either EGF or P4 in the culture medium increased cMOS mRNA levels. In conclusion, P4 increases cMOS, H1FOO and CCNB1 mRNA levels after the culture of oocytes from small antral follicles. P4 and the combination of EGF and P4 promote the growth of oocytes from medium-sized antral follicles, and both EGF and P4 increase cMOS mRNA levels.
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Affiliation(s)
- Francisco Taiã G Bezerra
- Laboratory of Biotechnology and Physiology of Reproduction, Federal University of Ceara, Sobral-CE, Brazil
| | - Laís R F M Paulino
- Laboratory of Biotechnology and Physiology of Reproduction, Federal University of Ceara, Sobral-CE, Brazil
| | - Bianca R Silva
- Laboratory of Biotechnology and Physiology of Reproduction, Federal University of Ceara, Sobral-CE, Brazil
| | - Anderson W B Silva
- Laboratory of Biotechnology and Physiology of Reproduction, Federal University of Ceara, Sobral-CE, Brazil
| | - Ana L P Souza Batista
- Laboratory of Biotechnology and Physiology of Reproduction, Federal University of Ceara, Sobral-CE, Brazil
| | - José R V Silva
- Laboratory of Biotechnology and Physiology of Reproduction, Federal University of Ceara, Sobral-CE, Brazil; and Corresponding author.
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12
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Morikawa R, Lee J, Miyano T. Effects of oocyte-derived growth factors on the growth of porcine oocytes and oocyte-cumulus cell complexes in vitro. J Reprod Dev 2021; 67:273-281. [PMID: 34261834 PMCID: PMC8423607 DOI: 10.1262/jrd.2021-026] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
During oocyte growth and follicle development, oocytes closely communicate with cumulus cells. We examined the effects of oocyte-derived growth factors, growth differentiation factor 9 (GDF9) and bone morphogenetic protein 15 (BMP15), on the growth and acquisition of meiotic competence of porcine oocytes collected from early antral follicles (1.2-1.5 mm). First, we confirmed that GDF9 and BMP15 mRNAs were expressed almost exclusively in the oocytes. Oocyte-cumulus cell complexes (OCCs) collected from early antral follicles were cultured in growth medium supplemented with 0-100 ng/ml of GDF9 or BMP15 for 5 days. GDF9 dose-dependently increased the OCC diameter, while BMP15 did not. GDF9 and BMP15 had no significant effects on oocyte growth (P > 0.05). When OCCs that had been cultured with 50 and 100 ng/ml BMP15 were subjected to a subsequent maturation culture, they expanded fully by gonadotropic stimulation and 49% and 61% of oocytes matured to metaphase II (MII), respectively. In contrast, GDF9 did not promote cumulus expansion, and < 10% of oocytes matured to MII. Based on the difference in cumulus expansion, we compared the expression of luteinizing hormone/choriogonadotropin receptor (LHCGR) and follicle stimulating hormone receptor (FSHR) mRNAs in cumulus cells. The level of LHCGR mRNA was increased in cumulus cells of the BMP15 group, although there were no significant differences in FSHR mRNA levels among the groups. These results suggest that GDF9 promotes the growth of OCCs and that BMP15 promotes LHCGR mRNA expression in cumulus cells during oocyte growth culture, which may contribute to cumulus expansion and oocyte maturation.
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Affiliation(s)
- Riho Morikawa
- Laboratory of Developmental Biotechnology, Graduate School of Agricultural Science, Kobe University, Kobe 657-8501, Japan
| | - Jibak Lee
- Laboratory of Developmental Biotechnology, Graduate School of Agricultural Science, Kobe University, Kobe 657-8501, Japan
| | - Takashi Miyano
- Laboratory of Developmental Biotechnology, Graduate School of Agricultural Science, Kobe University, Kobe 657-8501, Japan
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13
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Suresh A, Shukla MK, Kumar D, Shrivastava OP, Verma N. Simulated physiological oocyte maturation (SPOM) improves developmental competence of in vitro produced goat embryos. Theriogenology 2021; 172:193-199. [PMID: 34246165 DOI: 10.1016/j.theriogenology.2021.06.003] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2020] [Revised: 06/02/2021] [Accepted: 06/03/2021] [Indexed: 01/01/2023]
Abstract
The effect of simulated physiological oocyte maturation on the developmental competence, reactive oxygen species production and apoptosis rate of in vitro produced goat embryos were studied in the present experiment. Oocytes and spermatozoa were recovered from ovaries and epididymis, respectively, procured from a local small animal abattoir. The oocytes aspirated from the ovaries were allocated into two groups, control (subjected to routine in vitro maturation, fertilization and culture) and simulated physiological oocyte maturation (SPOM) group (subjected to prematuration, followed by routine in vitro maturation, fertilization and culture). The SPOM group showed a significantly (p < 0.05) higher maturation and blastocyst rates (90.60 ± 0.46% and 29.09 ± 2.59%, respectively) as compared to the control group (85.29 ± 0.98% and 24.09 ± 1.08%). The intensity of reactive oxygen species of the embryos in the control group (14.98 ± 0.83 pixels/embryo) was significantly (p < 0.05) higher than the SPOM group (9.60 ± 0.76 pixels/embryo). The apoptosis rate was also significantly (p < 0.05) higher in the embryos of the control group (9.18 ± 1.07%) as compared to the SPOM group (5.71 ± 0.90%). In conclusion, the simulated physiological oocyte maturation system significantly increases the developmental competence of the oocytes and decreases the intensity of reactive oxygen species and embryonic apoptosis in abattoir derived goat embryos.
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Affiliation(s)
- Ashitha Suresh
- Department of Veterinary Gynaecology and Obstetrics, College of Veterinary Science and Animal Husbandry, Jabalpur, Madhya Pradesh, India; Department of Veterinary Gynaecology and Obstetrics, Madras Veterinary College, Chennai, Tamil Nadu, India
| | - M K Shukla
- Department of Veterinary Gynaecology and Obstetrics, College of Veterinary Science and Animal Husbandry, Jabalpur, Madhya Pradesh, India; Department of Veterinary Gynaecology & Obstetrics, College of Veterinary and Animal Science, Sardar Vallabhbhai Patel University of Agriculture & Technology, Meerut, 250110, Uttar Pradesh, India.
| | - Dharmendra Kumar
- Animal Biotechnology Centre, Nanaji Deshmukh Veterinary Science University, Adhartaal, Jabalpur, 482004, Madhya Pradesh, India
| | - O P Shrivastava
- Department of Veterinary Gynaecology and Obstetrics, College of Veterinary Science and Animal Husbandry, Jabalpur, Madhya Pradesh, India
| | - Neeraj Verma
- Department of Veterinary Gynaecology and Obstetrics, College of Veterinary Science and Animal Husbandry, Jabalpur, Madhya Pradesh, India
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14
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The Improvement and Clinical Application of Human Oocyte In Vitro Maturation (IVM). Reprod Sci 2021; 29:2127-2135. [PMID: 34076873 DOI: 10.1007/s43032-021-00613-3] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2021] [Accepted: 05/10/2021] [Indexed: 12/15/2022]
Abstract
Oocyte in vitro maturation (IVM) is a technology with a long history that was established before IVF. Although it has been studied extensively, the efficiency of IVM has been poor for almost 30 years. In terms of the benefits of IVM, the efficiency and adoption of IVM are being improved by some notable improvements that have occurred in recent years. The establishment of biphasic IVM is the most important advancement in recent years. Biphasic IVM includes the pre-IVM culturing phase and IVM phase. The CNP-mediated pre-IVM culturing system is specifically tailored for non/minimally stimulated immature oocytes, and its efficiency has been shown. This is the most significant improvement made in recent decades in this area. In the clinic, IVM can be used for PCOS patients to avoid the occurrence of ovarian hyperstimulation syndrome (OHSS). Additionally, this method can solve the reproductive problems of some patients with special diseases (resistant ovary syndrome) that cannot be solved by IVF. In most fertility preservation procedures, oocytes in small antral follicles are lost. However, IVM has the ability to capture this kind of oocyte and save reproductive potential. IVM can be easily combined with fertility preservation strategies that have been applied in the clinic and improve the efficiency of fertility preservation. IVM is a useful and attractive technology and may be used widely worldwide in the near future.
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15
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Madan B, Virshup DM, Nes WD, Leaver DJ. Unearthing the Janus-face cholesterogenesis pathways in cancer. Biochem Pharmacol 2021; 196:114611. [PMID: 34010597 DOI: 10.1016/j.bcp.2021.114611] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2021] [Revised: 05/12/2021] [Accepted: 05/13/2021] [Indexed: 12/23/2022]
Abstract
Cholesterol biosynthesis, primarily associated with eukaryotes, occurs as an essential component of human metabolism with biosynthetic deregulation a factor in cancer viability. The segment that partitions between squalene and the C27-end cholesterol yields the main cholesterogenesis branch subdivided into the Bloch and Kandutsch-Russell pathways. Their importance in cell viability, in normal growth and development originates primarily from the amphipathic property and shape of the cholesterol molecule which makes it suitable as a membrane insert. Cholesterol can also convert to variant oxygenated product metabolites of distinct function producing a complex interplay between cholesterol synthesis and overall steroidogenesis. In this review, we disassociate the two sides of cholesterogenesisis affecting the type and amounts of systemic sterols-one which is beneficial to human welfare while the other dysfunctional leading to misery and disease that could result in premature death. Our focus here is first to examine the cholesterol biosynthetic genes, enzymes, and order of biosynthetic intermediates in human cholesterogenesis pathways, then compare the effect of proximal and distal inhibitors of cholesterol biosynthesis against normal and cancer cell growth and metabolism. Collectively, the inhibitor studies of druggable enzymes and specific biosynthetic steps, suggest a potential role of disrupted cholesterol biosynthesis, in coordination with imported cholesterol, as a factor in cancer development and as discussed some of these inhibitors have chemotherapeutic implications.
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Affiliation(s)
- Babita Madan
- Program in Cancer and Stem Cell Biology, Duke-NUS Medical School, Singapore, Singapore
| | - David M Virshup
- Program in Cancer and Stem Cell Biology, Duke-NUS Medical School, Singapore, Singapore; Department of Pediatrics, Duke University, Durham, NC, USA
| | - W David Nes
- Department of Chemistry and Biochemistry, Texas Tech University, Lubbock, TX, USA.
| | - David J Leaver
- Department of Biology, Geology, and Physical Sciences, Sul Ross State University, Alpine, TX, USA.
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16
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Liu J, Yao R, Lu S, Xu R, Zhang H, Wei J, Zhao C, Tang Y, Li C, Liu H, Zhao X, Wei Q, Ma B. Synergistic effect between LH and estrogen in the acceleration of cumulus expansion via GPR30 and EGFR pathways. Aging (Albany NY) 2020; 12:20801-20816. [PMID: 33113510 PMCID: PMC7655205 DOI: 10.18632/aging.104029] [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: 05/03/2020] [Accepted: 07/25/2020] [Indexed: 12/15/2022]
Abstract
The estrogen membrane receptor GPR30 (also known as G-protein coupled receptor 30) has recently been shown to be involved in the regulation of oocyte maturation and cumulus expansion. However, whether GPR30 expression is regulated by gonadotropin stimulation and how it participates in the regulation of the maturation process is still not clear. In this study, we explored the mechanism underlying the synergy between luteinizing hormone and 17β-estradiol (17β-E2) to improve the epidermal growth factor (EGF) response in cumulus oocyte complexes (COCs) during oocyte maturation in mice. The expression and distribution of GPR30, EGFR, and EGF-like growth factors were examined by real-time quantitative PCR, western blot, and immunofluorescence staining. Lyso-Tracker Red labeling was performed to detect the lysosomal activity in follicle granular cells (FGCs). Cumulus expansion of COCs was evaluated after in vitro maturation for 16 h. We found that EGF-like growth factors transmit LH signals to increase GRP30 levels by inhibiting protein degradation in lysosomes. Meanwhile, 17β-E2 stimulates the GPR30 signaling pathway to increase EGF receptor levels, enhancing the response ability of EGF signaling in COCs and thus promoting cumulus expansion. In conclusion, our study reveals the synergistic mechanism between LH and estrogen in the regulation of cumulus expansion during oocyte maturation process.
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Affiliation(s)
- Jie Liu
- College of Veterinary Medicine, Northwest A&F University, Yangling 712100 Shaanxi, China.,Key Laboratory of Animal Biotechnology, Ministry of Agriculture, Yangling 712100, Shaanxi, China
| | - Ru Yao
- College of Veterinary Medicine, Northwest A&F University, Yangling 712100 Shaanxi, China.,Key Laboratory of Animal Biotechnology, Ministry of Agriculture, Yangling 712100, Shaanxi, China
| | - Sihai Lu
- College of Veterinary Medicine, Northwest A&F University, Yangling 712100 Shaanxi, China.,Key Laboratory of Animal Biotechnology, Ministry of Agriculture, Yangling 712100, Shaanxi, China
| | - Rui Xu
- College of Veterinary Medicine, Northwest A&F University, Yangling 712100 Shaanxi, China.,Key Laboratory of Animal Biotechnology, Ministry of Agriculture, Yangling 712100, Shaanxi, China
| | - Hui Zhang
- College of Veterinary Medicine, Northwest A&F University, Yangling 712100 Shaanxi, China.,Key Laboratory of Animal Biotechnology, Ministry of Agriculture, Yangling 712100, Shaanxi, China
| | - Juncai Wei
- College of Veterinary Medicine, Northwest A&F University, Yangling 712100 Shaanxi, China.,Key Laboratory of Animal Biotechnology, Ministry of Agriculture, Yangling 712100, Shaanxi, China
| | - Chunrui Zhao
- College of Veterinary Medicine, Northwest A&F University, Yangling 712100 Shaanxi, China.,Key Laboratory of Animal Biotechnology, Ministry of Agriculture, Yangling 712100, Shaanxi, China
| | - Yaju Tang
- College of Veterinary Medicine, Northwest A&F University, Yangling 712100 Shaanxi, China.,Key Laboratory of Animal Biotechnology, Ministry of Agriculture, Yangling 712100, Shaanxi, China
| | - Chan Li
- College of Veterinary Medicine, Northwest A&F University, Yangling 712100 Shaanxi, China.,Key Laboratory of Animal Biotechnology, Ministry of Agriculture, Yangling 712100, Shaanxi, China
| | - Haokun Liu
- College of Veterinary Medicine, Northwest A&F University, Yangling 712100 Shaanxi, China.,Key Laboratory of Animal Biotechnology, Ministry of Agriculture, Yangling 712100, Shaanxi, China
| | - Xiaoe Zhao
- College of Veterinary Medicine, Northwest A&F University, Yangling 712100 Shaanxi, China.,Key Laboratory of Animal Biotechnology, Ministry of Agriculture, Yangling 712100, Shaanxi, China
| | - Qiang Wei
- College of Veterinary Medicine, Northwest A&F University, Yangling 712100 Shaanxi, China.,Key Laboratory of Animal Biotechnology, Ministry of Agriculture, Yangling 712100, Shaanxi, China
| | - Baohua Ma
- College of Veterinary Medicine, Northwest A&F University, Yangling 712100 Shaanxi, China.,Key Laboratory of Animal Biotechnology, Ministry of Agriculture, Yangling 712100, Shaanxi, China
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17
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Matsuno Y, Maruyama N, Fujii W, Naito K, Sugiura K. Effects of oocyte-derived paracrine factors on release of extracellular vesicles by murine mural granulosa cells in vitro. Anim Sci J 2020; 91:e13385. [PMID: 32515535 PMCID: PMC7378952 DOI: 10.1111/asj.13385] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2020] [Revised: 04/20/2020] [Accepted: 04/27/2020] [Indexed: 12/27/2022]
Abstract
Both oocytes and extracellular vesicles (EV) have emerged as critical regulators of mammalian follicular development; however, the possible interaction between the oocyte‐derived paracrine factor (ODPF) and EV signals has never been examined. Therefore, to explore the possibility of an interaction between oocyte and EV signals, the effects of ODPFs on the biogenesis of EVs as well as the expression levels of transcripts related to EV biogenesis in mural granulosa cells (MGCs) were examined using mice. The results showed that, while oocyte coculture has some effects on the expression levels of transcripts related to EV biogenesis, the number of EV particles present in the conditioned medium were not significantly different between ODPF‐treated and non‐treated MGCs. Therefore, oocytes have no effects on the EV biogenesis by MGCs, at least with respect to the numbers of EV particles.
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Affiliation(s)
- Yuta Matsuno
- Laboratory of Applied Genetics, Department of Animal Resource Sciences, Graduate School of Agricultural and Life Sciences, The University of Tokyo, Tokyo, Japan
| | - Natsumi Maruyama
- Laboratory of Applied Genetics, Department of Animal Resource Sciences, Graduate School of Agricultural and Life Sciences, The University of Tokyo, Tokyo, Japan
| | - Wataru Fujii
- Laboratory of Applied Genetics, Department of Animal Resource Sciences, Graduate School of Agricultural and Life Sciences, The University of Tokyo, Tokyo, Japan
| | - Kunihiko Naito
- Laboratory of Applied Genetics, Department of Animal Resource Sciences, Graduate School of Agricultural and Life Sciences, The University of Tokyo, Tokyo, Japan
| | - Koji Sugiura
- Laboratory of Applied Genetics, Department of Animal Resource Sciences, Graduate School of Agricultural and Life Sciences, The University of Tokyo, Tokyo, Japan
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18
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Kowsar R, Mansouri A, Sadeghi N, Abadi MHA, Ghoreishi SM, Sadeghi K, Miyamoto A. A multilevel analysis identifies the different relationships between amino acids and the competence of oocytes matured individually or in groups. Sci Rep 2020; 10:16082. [PMID: 32999417 PMCID: PMC7528030 DOI: 10.1038/s41598-020-73225-7] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2020] [Accepted: 09/11/2020] [Indexed: 11/03/2022] Open
Abstract
High-protein diets contribute to an increase in urea follicular concentrations associated with decreased fertility. Urea has been shown to interfere with the epidermal growth factor (EGF)/EGFR system, which has been shown to have a beneficial effect during in vitro maturation (IVM) of oocytes. Of note, the number of cumulus-oocyte complexes (COCs) in the maturation medium can change the maturation and the developmental competence of COCs. Therefore, it was hypothesized that, the presence of urea and EGF may have a differential effect on the depletion/appearance of AAs and competence of COCs matured individually (I-IVM system) or in groups (G-IVM system). In the G-IVM system, COCs increased consumption (depletion) of AAs compared with other groups in the presence of high-level urea (40 mg/dl) + EGF (10 ng/ml). In the I-IVM system, the non-cleaved COCs depleted more AAs than the cleaved COCs, in particular in the presence of urea. The combination of urea and EGF increased the depletion of AAs in the G-IVM system. However, the EGF abrogated the urea-induced depletion of AAs by the I-IVM COCs. The use of N-acetyl-L-cysteine as an EGFR inhibitor canceled urea-induced depletion of AAs. This shows the inhibiting effect of urea over the EGF/EGFR system. In the presence of urea + EGF, COCs had a lower degree of developmental competence than control in both I- and G-IVM systems. Arginine had the best predictive power to identify highly competent COCs in the G-IVM system, while glutamine was the best predictor of the cleavage in the I-IVM system. In conclusion, this multi-level study shows that COCs matured individually or in groups may have different association with AAs metabolism. These findings provide new insights into the relationships between AA metabolism and the subsequent developmental competence of COCs.
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Affiliation(s)
- Rasoul Kowsar
- Department of Animal Sciences, College of Agriculture, Isfahan University of Technology, 84156-83111, Isfahan, Iran. .,Global Agromedicine Research Center (GAMRC), Obihiro University of Agriculture and Veterinary Medicine, Obihiro, Hokkaido, 080-8555, Japan.
| | - Alireza Mansouri
- Global Agromedicine Research Center (GAMRC), Obihiro University of Agriculture and Veterinary Medicine, Obihiro, Hokkaido, 080-8555, Japan
| | - Nima Sadeghi
- FKA, Animal Husbandry and Agriculture Co, Isfahan, Iran
| | - Mohammad Heidaran Ali Abadi
- Department of Animal Sciences, College of Agriculture, Isfahan University of Technology, 84156-83111, Isfahan, Iran
| | - Seyed Mehdi Ghoreishi
- Department of Animal Sciences, College of Agriculture, Shiraz University, Shiraz, Iran
| | - Khaled Sadeghi
- Department of Animal Sciences, College of Agriculture, Isfahan University of Technology, 84156-83111, Isfahan, Iran
| | - Akio Miyamoto
- Global Agromedicine Research Center (GAMRC), Obihiro University of Agriculture and Veterinary Medicine, Obihiro, Hokkaido, 080-8555, Japan
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19
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Bartolucci AF, Uliasz T, Peluso JJ. MicroRNA-21 as a regulator of human cumulus cell viability and its potential influence on the developmental potential of the oocyte. Biol Reprod 2020; 103:94-103. [PMID: 32333014 DOI: 10.1093/biolre/ioaa058] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2020] [Revised: 03/18/2020] [Accepted: 04/22/2020] [Indexed: 12/26/2022] Open
Abstract
MicroRNA-21 is expressed in bovine, murine, and human cumulus cells with its expression in murine and bovine cumulus cells correlated with oocyte developmental potential. The aim of this study was to assess the relationship between cumulus cell MIR-21 and human oocyte developmental potential. These studies revealed that both the immature and mature forms of MicroRNA-21 (MIR-21-5p) were elevated in cumulus cells of oocytes that developed into blastocysts compared to cumulus cells of oocytes that arrested prior to blastocyst formation. This increase in MicroRNA-21 was observed regardless of whether the oocytes developed into euploid or aneuploid blastocysts. Moreover, MIR-21-5p levels in cumulus cells surrounding oocytes that either failed to mature or matured to metaphase II but failed to fertilize, were ≈50% less than the MIR-21-5p levels associated with oocytes that arrested prior to blastocyst formation. Why cumulus cells associated with oocytes of reduced developmental potential expressed less MIR-21-5p is unknown. It is unlikely due to reduced expression of either the receptors of growth differentiation factor 9 or rosha Ribonuclease III (DROSHA) and Dicer Ribonuclease III (DICER) which sequentially promote the conversion of immature forms of MicroRNA-21 to mature MicroRNA-21. Furthermore, cultured cumulus cells treated with a MIR-21-5p inhibitor had an increase in apoptosis and a corresponding increase in the expression of PTEN, a gene known to inhibit the AKT-dependent survival pathway in cumulus cells. These studies provide evidence for a role of MicroRNA-21 in human cumulus cells that influences the developmental potential of human oocytes.
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Affiliation(s)
- Alison F Bartolucci
- Department of Obstetrics and Gynecology, Farmington, CT 06030, USA.,The Center for Advanced Reproductive Services, University of Connecticut Health Center, Farmington, CT 06030, USA
| | - Tracy Uliasz
- Department of Cell Biology, University of CT Health Center, Farmington, CT 06030, USA
| | - John J Peluso
- Department of Obstetrics and Gynecology, Farmington, CT 06030, USA.,Department of Cell Biology, University of CT Health Center, Farmington, CT 06030, USA
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Ding C, Zou Q, Wu Y, Lu J, Qian C, Li H, Huang B. EGF released from human placental mesenchymal stem cells improves premature ovarian insufficiency via NRF2/HO-1 activation. Aging (Albany NY) 2020; 12:2992-3009. [PMID: 32040445 PMCID: PMC7041770 DOI: 10.18632/aging.102794] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2019] [Accepted: 01/12/2020] [Indexed: 04/12/2023]
Abstract
Human placental mesenchymal stem cells (hPMSCs) have the ability to release cytokines and to differentiate into the three germ layers. To date, the relevance of hPMSCs for the treatment of premature ovarian insufficiency (POI) disease through the regulation of oxidative stress is still unclear. Therefore, to evaluate the therapeutic efficiency and investigate the mechanism of hPMSCs, we generated a mouse model of POI and collected human ovarian granule cells (hGCs) from patients with POI. hPMSCs displayed therapeutic effects on POI ovarian function, including recovered follicular numbers and increased expression of oocyte markers. Furthermore, secretion of the cytokine EGF (epidermal growth factor) was higher from hPMSCs than it was from other cells. FACS and Western blot analyses showed that EGF elevated the proliferation and reduced the apoptosis in hGCs. hPMSCs and EGF inhibited oxidative stress levels. Protein assays demonstrated that EGF suppressed oxidative stress by dose-dependently upregulating the expression of the NRF2/HO-1 pathway, and it inhibited the apoptosis by regulating the PTEN/PI3K/AKT pathway. These findings provide an experimental foundation for hPMSCs in improving ovarian function through the secretion of EGF. The mechanism of action of EGF is related to protection from oxidative stress by activation of the NRF2/HO-1.
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Affiliation(s)
- Chenyue Ding
- Center of Reproduction and Genetics, Affiliated Suzhou Hospital of Nanjing Medical University, Suzhou Municipal Hospital, Suzhou 215002, China
| | - Qinyan Zou
- Center of Reproduction and Genetics, Affiliated Suzhou Hospital of Nanjing Medical University, Suzhou Municipal Hospital, Suzhou 215002, China
| | - Yifei Wu
- State Key Laboratory of Reproductive Medicine, Nanjing Medical University, Jiangsu 210029, China
| | - Jiafeng Lu
- Center of Reproduction and Genetics, Affiliated Suzhou Hospital of Nanjing Medical University, Suzhou Municipal Hospital, Suzhou 215002, China
| | - Chunfeng Qian
- Center of Reproduction and Genetics, Affiliated Suzhou Hospital of Nanjing Medical University, Suzhou Municipal Hospital, Suzhou 215002, China
- State Key Laboratory of Reproductive Medicine, Nanjing Medical University, Jiangsu 210029, China
| | - Hong Li
- Center of Reproduction and Genetics, Affiliated Suzhou Hospital of Nanjing Medical University, Suzhou Municipal Hospital, Suzhou 215002, China
| | - Boxian Huang
- Center of Reproduction and Genetics, Affiliated Suzhou Hospital of Nanjing Medical University, Suzhou Municipal Hospital, Suzhou 215002, China
- State Key Laboratory of Reproductive Medicine, Nanjing Medical University, Jiangsu 210029, China
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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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Capacitation IVM improves cumulus function and oocyte quality in minimally stimulated mice. J Assist Reprod Genet 2019; 37:77-88. [PMID: 31667700 DOI: 10.1007/s10815-019-01610-x] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2019] [Accepted: 10/04/2019] [Indexed: 12/27/2022] Open
Abstract
PURPOSE Oocyte in vitro maturation (IVM) is a patient-friendly reproductive technology but lower success rates than IVF have limited its uptake. Capacitation-IVM (CAPA-IVM) is an innovative new IVM system currently undergoing clinical evaluation. This study aimed to determine temporal effects of the pre-IVM phase of CAPA-IVM on cumulus function and oocyte developmental competence in mildly-stimulated mice. METHODS Immature cumulus oocyte complexes (COCs) derived from mildly stimulated (23 h PMSG) 28-day-old mice underwent pre-IVM for 0-24 h in medium containing c-type natriuretic peptide (CNP), E2, FSH and insulin, prior to IVM (CAPA-IVM). The effect of pre-IVM duration on cumulus cell function and embryo development post-CAPA-IVM/IVF was assessed. RESULTS Day 6 blastocyst rate increased incrementally with increasing pre-IVM duration: 40.6 ± 2.0%, 45.8 ± 1.2%, 52.2 ± 3.5%, 53.3 ± 5.9%, and 59.9 ± 2.5% for 0, 2, 6, 12, and 24 h pre-IVM, respectively (P < 0.01). DNA content/COC, a measure of cumulus cell proliferation, was significantly higher with 24 h pre-IVM group compared to 0, 2, or 6 h pre-IVM (P < 0.001). Pre-IVM for 24 h significantly increased cumulus expansion and mRNA expression of matrix genes Has2 and Tnfaip6 and Areg relative to no pre-IVM control (P < 0.01). Cumulus-oocyte gap-junctional communication (GJC) was maintained throughout 24 h pre-IVM (P < 0.0001), and GJC loss was slowed during the subsequent IVM phase, whilst meiotic resumption was accelerated (P < 0.05). Pre-IVM increased COC ATP and ADP content (P < 0.05), but not AMP, ATP/ADP, and energy charge. CONCLUSION The pre-IVM phase of CAPA-IVM improves the quality of IVM oocytes in a temporally dependent manner and significantly influences cumulus cell function including increased cell proliferation, cumulus expansion, and prolonged cumulus-oocyte GJC.
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Abdulrahman N, Fair T. Contribution of the immune system to follicle differentiation, ovulation and early corpus luteum formation. Anim Reprod 2019; 16:440-448. [PMID: 32435287 PMCID: PMC7234072 DOI: 10.21451/1984-3143-ar2019-0087] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2019] [Accepted: 07/25/2019] [Indexed: 12/30/2022] Open
Abstract
Much of what we know about the involvement of the immune system in periovulatory follicle differentiation, ovulation and subsequent formation of the corpus luteum in cattle is drawn from the findings of studies in several mammalian livestock species. By integrating published histological data from cattle, sheep and pigs and referring back to the more comprehensive knowledge bank that exists for mouse and humans we can sketch out the key cells of the immune system and the cytokines and growth factors that they produce that are involved in follicle differentiation and luteinization, ovulation and early follicle development. These contributions are reviewed and the key findings, discussed.
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Affiliation(s)
- Noof Abdulrahman
- School of Agriculture & Food Sciences, University College Dublin, Belfield, Dublin 4, Ireland.
| | - Trudee Fair
- School of Agriculture & Food Sciences, University College Dublin, Belfield, Dublin 4, Ireland.
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Munakata Y, Ueda M, Kawahara-Miki R, Kansaku K, Itami N, Shirasuna K, Kuwayama T, Iwata H. Follicular factors determining granulosa cell number and developmental competence of porcine oocytes. J Assist Reprod Genet 2018; 35:1809-1819. [PMID: 29998387 DOI: 10.1007/s10815-018-1247-9] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2018] [Accepted: 06/21/2018] [Indexed: 10/28/2022] Open
Abstract
PURPOSE Granulosa cell (GC) number in follicles is a simple characteristic of follicles. The present study examined the hypothesis that follicular fluid (FF) determines GC number and oocyte developmental ability and revealed the molecular background determining the number of follicular GCs. METHODS FF was collected from antral follicles (3-5 mm in diameter), after which the number of GCs per follicle was determined for each donor gilt using real time PCR targeting single copy gene. GCs were analyzed by next-generation RNA sequencing and IPA pathway analysis. RESULTS When oocyte cumulus cell-oocyte-complexes (COCs) were cultured in maturation medium containing 10% of each individual FF, the rate of development to the blastocyst stage was significantly correlated with the number of GCs in the donor gilt. In addition, when GCs were cultured in medium containing FF, the proliferative activity of the GCs was also significantly correlated to the number of GCs in the donor gilt. Moreover, when the FFs were categorized based on the number of GCs in the follicle, it was found that supplementation of culture media with GC-rich FF improved the developmental ability of oocytes compared to those supplemented with GC-poor FF. RNA sequencing and a pathway analysis of GCs from GC-rich and -poor follicles revealed the key regulatory pathway determining GC number in follicles. CONCLUSION GC number may be a useful marker for "good" follicles and oocytes, and the characteristics of the FFs determine granulosa cell number and oocyte developmental ability.
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Affiliation(s)
- Yasuhisa Munakata
- Department of Animal Reproduction, Tokyo University of Agriculture, Funako 1737, Atsugi, Kanagawa, 243-0034, Japan
| | - Manami Ueda
- Department of Animal Reproduction, Tokyo University of Agriculture, Funako 1737, Atsugi, Kanagawa, 243-0034, Japan
| | - Ryoka Kawahara-Miki
- NODAI Genome Research Center, Tokyo University of Agriculture, Setagaya, Tokyo, 156-8502, Japan
| | - Kazuki Kansaku
- Department of Animal Reproduction, Tokyo University of Agriculture, Funako 1737, Atsugi, Kanagawa, 243-0034, Japan
| | - Nobuhiko Itami
- Department of Animal Reproduction, Tokyo University of Agriculture, Funako 1737, Atsugi, Kanagawa, 243-0034, Japan
| | - Koumei Shirasuna
- Department of Animal Reproduction, Tokyo University of Agriculture, Funako 1737, Atsugi, Kanagawa, 243-0034, Japan
| | - Takehito Kuwayama
- Department of Animal Reproduction, Tokyo University of Agriculture, Funako 1737, Atsugi, Kanagawa, 243-0034, Japan
| | - Hisataka Iwata
- Department of Animal Reproduction, Tokyo University of Agriculture, Funako 1737, Atsugi, Kanagawa, 243-0034, Japan.
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Richani D, Gilchrist RB. The epidermal growth factor network: role in oocyte growth, maturation and developmental competence. Hum Reprod Update 2018; 24:1-14. [PMID: 29029246 DOI: 10.1093/humupd/dmx029] [Citation(s) in RCA: 158] [Impact Index Per Article: 26.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2017] [Accepted: 08/30/2017] [Indexed: 12/20/2022] Open
Abstract
BACKGROUND The LH surge induces great physiological changes within the preovulatory follicle, which culminate in the ovulation of a mature oocyte that is capable of supporting embryo and foetal development. However, unlike mural granulosa cells, the oocyte and its surrounding cumulus cells are not directly responsive to LH, indicating that the LH signal is mediated by secondary factors produced by the granulosa cells. The mechanisms by which the oocyte senses the ovulatory LH signal and hence prepares for ovulation has been a subject of considerable controversy for the past four decades. Within the last 15 years several significant insights have been made into the molecular mechanisms orchestrating oocyte development, maturation and ovulation. These findings centre on the epidermal growth factor (EGF) pathway and the role it plays in the complex signalling network that finely regulates oocyte maturation and ovulation. OBJECTIVE AND RATIONALE This review outlines the role of the EGF network during oocyte development and regulation of the ovulatory cascade, and in particular focuses on the effect of the EGF network on oocyte developmental competence. Application of this new knowledge to advances in ART is examined. SEARCH METHODS The PubMed database was used to search for peer-reviewed original and review articles concerning the EGF network. Publications offering a comprehensive description of the role of the EGF network in follicle and oocyte development were used. OUTCOMES It is now clear that acute upregulation of the EGF network is an essential component of the ovulatory cascade as it transmits the LH signal from the periphery of the follicle to the cumulus-oocyte complex (COC). More recent findings have elucidated new roles for the EGF network in the regulation of oocyte development. EGF signalling downregulates the somatic signal 3'5'-cyclic guanine monophosphate that suppresses oocyte meiotic maturation and simultaneously provides meiotic inducing signals. The EGF network also controls translation of maternal transcripts in the quiescent oocyte, a process that is integral to oocyte competence. As a means of restricting the ovulatory signal to the Graffian follicle, most COCs in the ovary are unresponsive to EGF-ligands. Recent studies have revealed that development of a functional EGF signalling network in cumulus cells requires dual endocrine (FSH) and oocyte paracrine cues (growth differentiation factor 9 and bone morphogenetic protein 15), and this occurs progressively in COCs during the last stages of folliculogenesis. Hence, a new concept to emerge is that cumulus cell acquisition of EGF receptor responsiveness represents a developmental hallmark in folliculogenesis, analogous to FSH-induction of LH receptor signalling in mural granulosa cells. Likewise, this event represents a major milestone in the oocyte's developmental progression and acquisition of developmental competence. It is now clear that EGF signalling is perturbed in COCs matured in vitro. This has inspired novel concepts in IVM systems to ameliorate this perturbation, resulting in improved oocyte developmental competence. WIDER IMPLICATIONS An oocyte of high quality is imperative for fertility. Elucidating the fundamental molecular and cellular mechanims by which the EGF network regulates oocyte maturation and ovulation can be expected to open new opportunities in ART. This knowledge has already led to advances in oocyte IVM in animal models. Translation of such advances into a clinical setting should increase the efficacy of IVM, making it a viable treatment option for a wide range of patients, thereby simplifying fertility treatment and bringing substantial cost and health benefits.
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Affiliation(s)
- Dulama Richani
- School of Women's and Children's Health, Discipline of Obstetrics and Gynaecology, University of New South Wales Sydney, NSW 2052, Australia
| | - Robert B Gilchrist
- School of Women's and Children's Health, Discipline of Obstetrics and Gynaecology, University of New South Wales Sydney, NSW 2052, Australia
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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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Sugimura S, Yamanouchi T, Palmerini MG, Hashiyada Y, Imai K, Gilchrist RB. Effect of pre-in vitro maturation with cAMP modulators on the acquisition of oocyte developmental competence in cattle. J Reprod Dev 2018; 64:233-241. [PMID: 29503399 PMCID: PMC6021610 DOI: 10.1262/jrd.2018-009] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Abstract
The administration of follicle-stimulating hormone (FSH) prior to oocyte retrieval improves oocyte developmental competence. During bovine embryo production in vitro,
however, oocytes are typically derived from FSH-unprimed animals. In the current study, we examined the effect of pre-in vitro maturation (IVM) with cAMP modulators, also
known as the second messengers of FSH, on the developmental competence of oocytes derived from small antral follicles (2–4 mm) of FSH-unprimed animals. Pre-IVM with
N6,2ʹ-O-dibutyryladenosine 3′,5′-cyclicmonophosphate (dbcAMP) and 3-isobutyl-1-methylxanthine (IBMX) for 2 h improved the blastocyst formation in oocytes stimulated by FSH or amphiregulin
(AREG). Furthermore, pre-IVM enhanced the expression of the FSH- or AREG-stimulated extracellular matrix-related genes HAS2, TNFAIP6, and
PTGS2, and epidermal growth factor (EGF)-like peptide-related genes AREG and EREG. Additionally, pre-IVM with dbcAMP and IBMX enhanced
the expression of EGFR, and also increased and prolonged cumulus cell-oocyte gap junctional communication. The improved oocyte development observed using the pre-IVM
protocol was ablated by an EGF receptor phosphorylation inhibitor. These results indicate that pre-IVM with cAMP modulators could contribute to the acquisition of developmental competence by
bovine oocytes from small antral follicles through the modulation of EGF receptor signaling and oocyte-cumulus/cumulus-cumulus gap junctional communication.
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Affiliation(s)
- Satoshi Sugimura
- Department of Biological Production, Institute of Agriculture, Tokyo University of Agriculture and Technology, Tokyo 183-8509, Japan
| | | | - Maria Grazia Palmerini
- Department of Life, Health and Environmental Sciences, University of L'Aquila, L'Aquila 67100, Italy
| | | | - Kei Imai
- Department of Sustainable Agriculture, Rakuno Gakuen University, Hokkaido 069-8501, Japan
| | - Robert B Gilchrist
- Discipline of Obstetrics & Gynaecology, School of Women's & Children's Health, University of New South Wales, Sydney 2052, Australia
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Bertoldo MJ, Andraweera PH, Bromfield EG, Cousins FL, Lindsay LA, Paiva P, Regan SL, Rose RD, Akison LK. Recent and emerging reproductive biology research in Australia and New Zealand: highlights from the Society for Reproductive Biology Annual Meeting, 2017. Reprod Fertil Dev 2018; 30:1049-1054. [PMID: 29381876 DOI: 10.1071/rd17445] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2017] [Accepted: 12/09/2017] [Indexed: 12/27/2022] Open
Abstract
Research in reproductive science is essential to promote new developments in reproductive health and medicine, agriculture and conservation. The Society for Reproductive Biology (SRB) 2017 conference held in Perth (WA, Australia) provided a valuable update on current research programs in Australia and New Zealand. This conference review delivers a dedicated summary of significant questions, emerging concepts and innovative technologies presented in the symposia. This research demonstrates significant advances in the identification of precursors for a healthy pregnancy, birth and child, and discusses how these factors can influence disease risk. A key theme included preconception parental health and its effect on gametogenesis, embryo and fetal development and placental function. In addition, the perturbation of key developmental checkpoints was shown to contribute to a variety of pathological states that have the capacity to affect health and fertility. Importantly, the symposia discussed in this review emphasised the role of reproductive biology as a conduit for understanding the transmission of non-communicable diseases, such as metabolic disorders and cancers. The research presented at SRB 2017 has revealed key findings that have the prospect to change not only the fertility of the present generation, but also the health and reproductive capacity of future generations.
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Affiliation(s)
- M J Bertoldo
- Fertility and Research Centre, School of Women's and Children's Health, The University of New South Wales, Wallace Wurth Building, Randwick, NSW 2052, Australia
| | - P H Andraweera
- Adelaide Medical School and Robinson Research Institute, The University of Adelaide, North Terrace, Adelaide, SA 5005, Australia
| | - E G Bromfield
- Priority Research Centre for Reproductive Science, The University of Newcastle, University Drive, Callaghan, NSW 2308, Australia
| | - F L Cousins
- The Ritchie Centre, Hudson Institute of Medical Research, 27-31 Wright Street, Clayton, Vic. 3141, Australia
| | - L A Lindsay
- School of Medical Sciences (Anatomy and Histology), The University of Sydney, Anderson Stuart Building, F13, Sydney, NSW 2006, Australia
| | - P Paiva
- Gynaecology Research Centre, Department of Obstetrics and Gynaecology, Royal Women's Hospital, The University of Melbourne, Parkville, Vic. 3010, Australia
| | - S L Regan
- Stem Cell and Cancer Biology Laboratory, School of Biomedical Sciences, Curtin Health Innovation Research Institute, Curtin University, Perth, WA 6102, Australia
| | - R D Rose
- Adelaide Medical School and Robinson Research Institute, The University of Adelaide, North Terrace, Adelaide, SA 5005, Australia
| | - L K Akison
- School of Biomedical Sciences, Sir William MacGregor Building, The University of Queensland, St Lucia, Qld 4072, Australia
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Belli M, Shimasaki S. Molecular Aspects and Clinical Relevance of GDF9 and BMP15 in Ovarian Function. VITAMINS AND HORMONES 2018; 107:317-348. [PMID: 29544636 DOI: 10.1016/bs.vh.2017.12.003] [Citation(s) in RCA: 73] [Impact Index Per Article: 12.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/03/2022]
Abstract
Growth and differentiation factor 9 (GDF9) and bone morphogenetic protein 15 (BMP15) are oocyte-secreted factors with a leading role in the control of ovarian function in female reproduction, modulating both the cell fate of the somatic granulosa cells and the quality and developmental competence of the egg. This short review aims to consolidate the molecular aspects of GDF9 and BMP15 and their integral actions in female fertility to understand particularly their effects on oocyte quality and fetal growth. The significant consequences of mutations in the GDF9 and BMP15 genes in women with dizygotic twins as well as the clinical relevance of these oocyte factors in the pathogenesis of primary ovarian insufficiency and polycystic ovary syndrome are also addressed.
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Affiliation(s)
- Martina Belli
- University of California San Diego, School of Medicine, La Jolla, CA, United States
| | - Shunichi Shimasaki
- University of California San Diego, School of Medicine, La Jolla, CA, United States.
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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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Transcriptomic signature of the follicular somatic compartment surrounding an oocyte with high developmental competence. Sci Rep 2017; 7:6815. [PMID: 28755009 PMCID: PMC5533789 DOI: 10.1038/s41598-017-07039-5] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2017] [Accepted: 06/22/2017] [Indexed: 12/11/2022] Open
Abstract
During antral folliculogenesis, developmental competence of prospective oocytes is regulated in large part by the follicular somatic component to prepare the oocyte for the final stage of maturation and subsequent embryo development. The underlying molecular mechanisms are poorly understood. Oocytes reaching the advanced stage of follicular growth by administration of exogenous follicle-stimulating hormone (FSH) possess higher developmental competence than oocytes in FSH-untreated smaller follicles. In this study, the transcriptomic profile of the cumulus cells from cows receiving FSH administration (FSH-priming) was compared, as a model of high oocyte competence, with that from untreated donor cows (control). Ingenuity Pathway Analysis showed that cumulus cells receiving FSH-priming were rich in down-regulated transcripts associated with cell movement and migration, including the extracellular matrix-related transcripts, probably preventing the disruption of cell-to-cell contacts. Interestingly, the transcriptomic profile of up-regulated genes in the control group was similar to that of granulosa cells from atretic follicles. Interferon regulatory factor 7 was activated as the key upstream regulator of FSH-priming. Thus, acquisition of developmental competence by oocytes can be ensured by the integrity of cumulus cells involved in cell-to-cell communication and cell survival, which may help achieve enhanced oocyte-somatic cell coupling.
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Optimal doses of EGF and GDNF act as biological response modifiers to improve porcine oocyte maturation and quality. ZYGOTE 2017; 25:423-433. [DOI: 10.1017/s0967199417000181] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
SummaryIt is well documented that both epidermal growth factor (EGF) and glial cell line-derived neurotrophic factor (GDNF) are critical for porcine oocyte maturation, however, little information is known about their mechanism of action in vitro. To gain insight into the mechanisms of action of the optimum doses of EGF and GDNF on porcine oocyte maturation, porcine cumulus–oocyte complexes (COCs) were matured in defined porcine oocyte medium supplemented with EGF, GDNF or a combination of both at varying concentrations (0–100 ng/ml) for 44 h. Nuclear and cytoplasmic maturation were determined in terms of nuclear stage after DNA staining with Hoechst and cortical granule distribution after lectin labeling, respectively. Mature oocytes were subsequently collected for gene expression analysis or subjected to in vitro fertilization and cultured for 7 days. The results showed that EGF and/or GDNF, when administered in a certain dose (50 ng/μl) to the maturation medium, not only effectively improved the synchronization of nuclear and cytoplasmic maturation processes within the oocyte, but enhanced expression of their corresponding receptors in mature oocytes (P < 0.05). Moreover, supplementation with an optimal combination of EGF + GDNF resulted in elevation of TFAM transcripts as well as a decrease of caspase-3 transcripts compared with the other studied groups (P < 0.05). Collectively, our results indicate that treatment of porcine oocytes with specific-dose combinations of EGF and GDNF stimulates oocyte quality and competence by transcriptional modulation of genes involved in oocyte survival and competence.
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Reversible meiotic arrest of bovine oocytes by EGFR inhibition and follicular hemisections. Theriogenology 2017; 99:53-62. [PMID: 28708500 DOI: 10.1016/j.theriogenology.2017.05.014] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2016] [Revised: 05/08/2017] [Accepted: 05/20/2017] [Indexed: 11/21/2022]
Abstract
The objective of this study was to investigate the effects of inhibiting the epidermal growth factor receptor (EGFR) pathway on meiosis blockage and resumption, mRNA expression of genes involved in oocyte maturation and cumulus expansion, and embryo development. Bovine cumulus-oocyte complexes (COCs) were cultured for 15 h in the presence of the EGFR inhibitor (AG1478) and follicular hemisections (FHS). Most of the oocytes (89.3%) remained at the germinal vesicle (GV) stage when cultured in the presence of FHS and 5 μM AG1478. The inhibitory effect was reversible as most oocytes (83.8%) completed meiosis after additional 20 h maturation. Embryo development to the blastocyst stage was similar (P > 0.05) between FHS and 5 μM AG1478 treated (39.3%) and control (41.1%) groups. In cumulus cells, mRNA abundance of early growth response protein 1 (EGR1), tumor necrosis factor alpha-induced protein 6 (TNFAIP6) and hyaluronan synthase 2 (HAS2) genes, and phosphorylated extracellular regulated kinase (p-ERK1/2) protein were lower in COCs treated with AG1478 plus FHS compared with FHS alone (P < 0.05). In granulosa cells of FHS, AG1478 treatment reduced transcript levels of PGR and ADAMTS1 (P < 0.05). The inhibitory effect of AG1478 on meiotic progression was not reverted by treatment with angiotensin II (ANG II) or prostaglandins (PGF2α or PGE2). This study demonstrates that inhibition of EGFR in the presence of FHS is a reliable approach to promote reversible arrest of bovine oocytes at the GV stage.
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Maternal effect gene expression in porcine metaphase II oocytes and embryos in vitro: effect of epidermal growth factor, interleukin-1β and leukemia inhibitory factor. ZYGOTE 2016; 25:120-130. [PMID: 28007046 DOI: 10.1017/s0967199416000332] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Maternal effect genes (MEG) play a crucial role in early embryogenesis. In vitro culture conditions may affect MEG expression in porcine oocytes and embryos. We investigated whether in vitro culture medium supplementation with epidermal growth factor (EGF), IL-1β or LIF (leukemia inhibitory factor) affects the mRNA level of ZAR-1 (zygote arrest 1), NPM2 (nucleoplasmin 2) and DPPA3 (developmental associated protein 3) in porcine MII oocytes and embryos. Cumulus-oocyte complexes (COCs) were matured in NCSU-37 medium (control) or in NCSU-37 with EGF 10 ng/ml, IL-1β 10 ng/ml or LIF 50 ng/ml. After maturation for 44-46 h, MII oocytes were preserved for the analysis of MEG mRNA levels (experiment 1). In experiment 2, COCs were fertilized, and the presumptive zygotes were cultured in the same groups. Then, 2-, 4-, 8-cell embryos, morulae and blastocysts were collected for the analysis of MEG mRNA levels. LIF addition to the maturation medium increased MII oocyte numbers (P < 0.05), while EGF and IL-1β did not affect oocyte maturation. Medium supplementation with EGF resulted in lower DPPA3 mRNA levels in MII oocytes and in 2- and 4-cell embryos versus control embryos (P < 0.05). LIF treatment increased DPPA3 mRNA levels in morulae and blastocysts (P < 0.05). Culture with EGF and IL-1β decreased ZAR-1 and NPM2 mRNA levels in 2-cell embryos (P < 0.05). The inclusion of EGF or IL-1β in the porcine in vitro production system influences ZAR-1, NPM2 and DPPA3 mRNA in MII oocytes and embryos but not beyond the 4-cell stage. LIF stimulates oocyte maturation and affects DPPA3 mRNA in porcine morulae and blastocysts in vitro.
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De Vos M, Smitz J, Thompson JG, Gilchrist RB. The definition of IVM is clear—variations need defining. Hum Reprod 2016; 31:2411-2415. [DOI: 10.1093/humrep/dew208] [Citation(s) in RCA: 54] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2016] [Revised: 07/04/2016] [Accepted: 07/08/2016] [Indexed: 12/25/2022] Open
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Bidirectional communication between cumulus cells and the oocyte: Old hands and new players? Theriogenology 2016; 86:62-8. [DOI: 10.1016/j.theriogenology.2016.04.019] [Citation(s) in RCA: 129] [Impact Index Per Article: 16.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2015] [Revised: 01/29/2016] [Accepted: 03/14/2016] [Indexed: 12/11/2022]
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Appeltant R, Somfai T, Maes D, VAN Soom A, Kikuchi K. Porcine oocyte maturation in vitro: role of cAMP and oocyte-secreted factors - A practical approach. J Reprod Dev 2016; 62:439-449. [PMID: 27349308 PMCID: PMC5081730 DOI: 10.1262/jrd.2016-016] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Polyspermy or the penetration of more than one sperm cell remains a problem during porcine in vitro fertilization (IVF). After in
vitro culture of porcine zygotes, only a low percentage of blastocysts develop and their quality is inferior to that of in vivo
derived blastocysts. It is unknown whether the cytoplasmic maturation of the oocyte is sufficiently sustained in current in vitro maturation
(IVM) procedures. The complex interplay between oocyte and cumulus cells during IVM is a key factor in this process. By focusing on this bidirectional
communication, it is possible to control the coordination of cumulus expansion, and nuclear and cytoplasmic maturation during IVM to some extent. Therefore,
this review focuses on the regulatory mechanisms between oocytes and cumulus cells to further the development of new in vitro embryo production
(IVP) procedures, resulting in less polyspermy and improved oocyte developmental potential. Specifically, we focused on the involvement of cAMP in maturation
regulation and function of oocyte-secreted factors (OSFs) in the bidirectional regulatory loop between oocyte and cumulus cells. Our studies suggest that
maintaining high cAMP levels in the oocyte during the first half of IVM sustained improved oocyte maturation, resulting in an enhanced response after IVF and
cumulus matrix disassembly. Recent research indicated that the addition of OSFs during IVM enhanced the developmental competence of small follicle-derived
oocytes, which was stimulated by epidermal growth factor (EGF) via developing EGF-receptor signaling.
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Affiliation(s)
- Ruth Appeltant
- Division of Animal Sciences, Institute of Agrobiological Sciences, National Agriculture and Food Research Organization, Ibaraki 305-8602, Japan
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Wang X, Gook DA, Walters KA, Anazodo A, Ledger WL, Gilchrist RB. Improving fertility preservation for girls and women by coupling oocyte in vitro maturation with existing strategies. ACTA ACUST UNITED AC 2016; 12:275-8. [PMID: 27188229 DOI: 10.2217/whe-2016-0019] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Affiliation(s)
- Xiaoqian Wang
- Department of Obstetrics & Gynaecology, St George Public Hospital, Sydney, NSW 2217, Australia
| | - Debra A Gook
- Reproductive Services & Melbourne IVF, Royal Women's Hospital, Parkville, Australia.,Department of Obstetrics & Gynaecology, University of Melbourne, Parkville, Australia
| | - Kirsty A Walters
- School of Women's & Children's Health, University of New South Wales, Sydney, NSW 2052, Australia
| | - Antoinette Anazodo
- School of Women's & Children's Health, University of New South Wales, Sydney, NSW 2052, Australia.,Kids Cancer Center, Sydney Children's Hospital, Randwick, NSW 2031, Australia.,Nulune Comprehensive Cancer Center, Prince of Wales Hospital, Randwick, NSW 2031, Australia
| | - William L Ledger
- School of Women's & Children's Health, University of New South Wales, Sydney, NSW 2052, Australia
| | - Robert B Gilchrist
- School of Women's & Children's Health, University of New South Wales, Sydney, NSW 2052, Australia
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Blaha M, Nemcova L, Kepkova KV, Vodicka P, Prochazka R. Gene expression analysis of pig cumulus-oocyte complexes stimulated in vitro with follicle stimulating hormone or epidermal growth factor-like peptides. Reprod Biol Endocrinol 2015; 13:113. [PMID: 26445099 PMCID: PMC4596359 DOI: 10.1186/s12958-015-0112-2] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/08/2015] [Accepted: 10/02/2015] [Indexed: 11/26/2022] Open
Abstract
BACKGROUND The gonadotropin-induced resumption of oocyte meiosis in preovulatory follicles is preceded by expression of epidermal growth factor (EGF)-like peptides, amphiregulin (AREG) and epiregulin (EREG), in mural granulosa and cumulus cells. Both the gonadotropins and the EGF-like peptides possess the capacity to stimulate resumption of oocyte meiosis in vitro via activation of a broad signaling network in cumulus cells. To better understand the rapid genomic actions of gonadotropins (FSH) and EGF-like peptides, we analyzed transcriptomes of cumulus cells at 3 h after their stimulation. METHODS We hybridized aRNA from cumulus cells to a pig oligonucleotide microarray and compared the transcriptomes of FSH- and AREG/EREG-stimulated cumulus cells with untreated control cells and vice versa. The identified over- and underexpressed genes were subjected to functional genomic analysis according to their molecular and cellular functions. The expression pattern of 50 selected genes with a known or potential function in ovarian development was verified by real-time qRT-PCR. RESULTS Both FSH and AREG/EREG increased the expression of genes associated with regulation of cell proliferation, cell migration, blood coagulation and extracellular matrix remodeling. FSH alone induced the expression of genes involved in inflammatory response and in the response to reactive oxygen species. Moreover, FSH stimulated the expression of genes closely related to some ovulatory events either exclusively or significantly more than AREG/EREG (AREG, ADAMTS1, HAS2, TNFAIP6, PLAUR, PLAT, and HSD17B7). In contrast to AREG/EREG, FSH also increased the expression of genes coding for key transcription factors (CEBPB, FOS, ID1/3, and NR5A2), which may contribute to the differing expression profiles of FSH- and AREG/EREG-treated cumulus cells. CONCLUSIONS The impact of FSH on cumulus cell gene transcription was higher than the impact of EGF-like factors in terms of the number of cell functions affected as well as the number of over- and underexpressed genes. Both FSH and EGF-like factors overexpressed genes involved in the post-ovulatory switch in steroidogenesis and tissue remodelling. However, FSH was remarkably more efficient in the up-regulation of several specific genes essential for ovulation of matured oocytes and also genes that been reported to play an important role in maturation of cumulus-enclosed oocytes in vitro.
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Affiliation(s)
- Milan Blaha
- Laboratory of Developmental Biology, Institute of Animal Physiology and Genetics, The Czech Academy of Sciences, Rumburska 89, 277 21, Libechov, Czech Republic
| | - Lucie Nemcova
- Laboratory of Developmental Biology, Institute of Animal Physiology and Genetics, The Czech Academy of Sciences, Rumburska 89, 277 21, Libechov, Czech Republic
| | - Katerina Vodickova Kepkova
- Laboratory of Developmental Biology, Institute of Animal Physiology and Genetics, The Czech Academy of Sciences, Rumburska 89, 277 21, Libechov, Czech Republic
| | - Petr Vodicka
- Department of Neurology, Massachusetts General Hospital and Harvard Medical School, Charlestown, MA, USA
| | - Radek Prochazka
- Laboratory of Developmental Biology, Institute of Animal Physiology and Genetics, The Czech Academy of Sciences, Rumburska 89, 277 21, Libechov, Czech Republic.
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Mottershead DG, Sugimura S, Al-Musawi SL, Li JJ, Richani D, White MA, Martin GA, Trotta AP, Ritter LJ, Shi J, Mueller TD, Harrison CA, Gilchrist RB. Cumulin, an Oocyte-secreted Heterodimer of the Transforming Growth Factor-β Family, Is a Potent Activator of Granulosa Cells and Improves Oocyte Quality. J Biol Chem 2015; 290:24007-20. [PMID: 26254468 DOI: 10.1074/jbc.m115.671487] [Citation(s) in RCA: 102] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2015] [Indexed: 11/06/2022] Open
Abstract
Growth differentiation factor 9 (GDF9) and bone morphogenetic protein 15 (BMP15) are oocyte-specific growth factors with central roles in mammalian reproduction, regulating species-specific fecundity, ovarian follicular somatic cell differentiation, and oocyte quality. In the human, GDF9 is produced in a latent form, the mechanism of activation being an open question. Here, we produced a range of recombinant GDF9 and BMP15 variants, examined their in silico and physical interactions and their effects on ovarian granulosa cells (GC) and oocytes. We found that the potent synergistic actions of GDF9 and BMP15 on GC can be attributed to the formation of a heterodimer, which we have termed cumulin. Structural modeling of cumulin revealed a dimerization interface identical to homodimeric GDF9 and BMP15, indicating likely formation of a stable complex. This was confirmed by generation of recombinant heterodimeric complexes of pro/mature domains (pro-cumulin) and covalent mature domains (cumulin). Both pro-cumulin and cumulin exhibited highly potent bioactivity on GC, activating both SMAD2/3 and SMAD1/5/8 signaling pathways and promoting proliferation and expression of a set of genes associated with oocyte-regulated GC differentiation. Cumulin was more potent than pro-cumulin, pro-GDF9, pro-BMP15, or the two combined on GC. However, on cumulus-oocyte complexes, pro-cumulin was more effective than all other growth factors at notably improving oocyte quality as assessed by subsequent day 7 embryo development. Our results support a model of activation for human GDF9 dependent on cumulin formation through heterodimerization with BMP15. Oocyte-secreted cumulin is likely to be a central regulator of fertility in mono-ovular mammals.
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Affiliation(s)
- David G Mottershead
- From the Robinson Research Institute and Discipline of Obstetrics and Gynaecology, School of Paediatrics and Reproductive Health and Mottasis Oy Ltd., 00430 Helsinki, Finland
| | - Satoshi Sugimura
- From the Robinson Research Institute and Discipline of Obstetrics and Gynaecology, School of Paediatrics and Reproductive Health and the Institute of Agriculture, Department of Biological Production, Tokyo University of Agriculture and Technology, Tokyo 183-0057, Japan
| | - Sara L Al-Musawi
- the Hudson Institute of Medical Research, Clayton, Victoria 3168, Australia
| | - Jing-Jie Li
- From the Robinson Research Institute and Discipline of Obstetrics and Gynaecology, School of Paediatrics and Reproductive Health and the Center of Reproductive Medicine, the Sixth Affiliated Hospital, Sun Yat-sen University, 510655 Guangzhou, China
| | - Dulama Richani
- the Discipline of Obstetrics & Gynaecology, School of Women's & Children's Health, University of New South Wales, Sydney, New South Wales 2052, Australia, and
| | - Melissa A White
- From the Robinson Research Institute and Discipline of Obstetrics and Gynaecology, School of Paediatrics and Reproductive Health and
| | - Georgia A Martin
- From the Robinson Research Institute and Discipline of Obstetrics and Gynaecology, School of Paediatrics and Reproductive Health and
| | - Andrew P Trotta
- From the Robinson Research Institute and Discipline of Obstetrics and Gynaecology, School of Paediatrics and Reproductive Health and
| | - Lesley J Ritter
- From the Robinson Research Institute and Discipline of Obstetrics and Gynaecology, School of Paediatrics and Reproductive Health and the Australian Research Council Centre of Excellence in Nanoscale BioPhotonics, University of Adelaide, Adelaide, South Australia 5005, Australia
| | - Junyan Shi
- From the Robinson Research Institute and Discipline of Obstetrics and Gynaecology, School of Paediatrics and Reproductive Health and
| | - Thomas D Mueller
- the Department of Plant Physiology and Biophysics, Julius-von-Sachs Institute of the University Wuerzburg, D-97082 Wuerzburg, Germany
| | - Craig A Harrison
- the Hudson Institute of Medical Research, Clayton, Victoria 3168, Australia
| | - Robert B Gilchrist
- From the Robinson Research Institute and Discipline of Obstetrics and Gynaecology, School of Paediatrics and Reproductive Health and the Discipline of Obstetrics & Gynaecology, School of Women's & Children's Health, University of New South Wales, Sydney, New South Wales 2052, Australia, and
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Bertoldo MJ, Faure M, Dupont J, Froment P. AMPK: a master energy regulator for gonadal function. Front Neurosci 2015; 9:235. [PMID: 26236179 PMCID: PMC4500899 DOI: 10.3389/fnins.2015.00235] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2015] [Accepted: 06/19/2015] [Indexed: 12/11/2022] Open
Abstract
From C. elegans to mammals (including humans), nutrition and energy metabolism significantly influence reproduction. At the cellular level, some detectors of energy status indicate whether energy reserves are abundant (obesity), or poor (diet restriction). One of these detectors is AMPK (5′ AMP-activated protein kinase), a protein kinase activated by ATP deficiency but also by several natural substances such as polyphenols or synthetic molecules like metformin, used in the treatment of insulin resistance. AMPK is expressed in muscle and liver, but also in the ovary and testis. This review focuses on the main effects of AMPK identified in gonadal cells. We describe the role of AMPK in gonadal steroidogenesis, in proliferation and survival of somatic gonadal cells and in the maturation of oocytes or spermatozoa. We discuss also the role of AMPK in germ and somatic cell interactions within the cumulus-oocyte complex and in the blood testis barrier. Finally, the interface in the gonad between AMPK and modification of metabolism is reported and discussion about the role of AMPK on fertility, in regards to the treatment of infertility associated with insulin resistance (male obesity, polycystic ovary syndrome).
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Affiliation(s)
- Michael J Bertoldo
- Discipline of Obstetrics and Gynaecology, School of Women's and Children's Health, University of New South Wales Sydney, NSW, Australia
| | - Melanie Faure
- Unité de Physiologie de la Reproduction et des Comportements, Institut National de la Recherche Agronomique, UMR85 Nouzilly, France
| | - Joëlle Dupont
- Unité de Physiologie de la Reproduction et des Comportements, Institut National de la Recherche Agronomique, UMR85 Nouzilly, France
| | - Pascal Froment
- Unité de Physiologie de la Reproduction et des Comportements, Institut National de la Recherche Agronomique, UMR85 Nouzilly, France
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Sugimura S, Ritter LJ, Rose RD, Thompson JG, Smitz J, Mottershead DG, Gilchrist RB. Promotion of EGF receptor signaling improves the quality of low developmental competence oocytes. Dev Biol 2015; 403:139-49. [PMID: 25981108 DOI: 10.1016/j.ydbio.2015.05.008] [Citation(s) in RCA: 51] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2015] [Revised: 05/05/2015] [Accepted: 05/06/2015] [Indexed: 11/16/2022]
Abstract
Oocytes acquire developmental competence with progressive folliculogenesis. Cumulus oocyte complexes (COCs) from small antral follicles have inherent low competence and are poorly responsive to amphiregulin (AREG) which normally mediates oocyte maturation and ovulation. Using low competence porcine COCs, in an in vitro AREG-induced oocyte maturation system, the combined exposure to N(6),2'-O-dibutyryladenosine 3':5' cyclic monophosphate (cAMP) and bone morphogenetic protein 15 (B15) and growth differentiation factor 9 (G9) was necessary to enhance the rate of oocyte meiotic maturation and blastocyst formation. Furthermore, the combination of cAMP+B15+G9 enabled AREG-stimulated cumulus expansion and increased expression of the matrix-related genes HAS2, TNFIPA6 and PTGS2. Additionally, the combination enhanced p-ERK1/2 which is downstream of the EGF receptor. The enhanced nuclear maturation and blastocyst formation rates with the combinational treatment were ablated by an EGF receptor phosphorylation inhibitor. These results indicate that cAMP and oocyte-secreted factors cooperate to promote EGF receptor functionality in developing COCs, representing a key component of the acquisition of oocyte developmental competence.
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Affiliation(s)
- Satoshi Sugimura
- Robinson Research Institute, and Discipline of Obstetrics and Gynaecology, School of Paediatrics and Reproductive Health, The University of Adelaide, South Australia 5005, Australia; Institute of Agriculture, Department of Biological Production, Tokyo University of Agriculture and Technology, Tokyo 183-8509, Japan
| | - Lesley J Ritter
- Robinson Research Institute, and Discipline of Obstetrics and Gynaecology, School of Paediatrics and Reproductive Health, The University of Adelaide, South Australia 5005, Australia
| | - Ryan D Rose
- Robinson Research Institute, and Discipline of Obstetrics and Gynaecology, School of Paediatrics and Reproductive Health, The University of Adelaide, South Australia 5005, Australia
| | - Jeremy G Thompson
- Robinson Research Institute, and Discipline of Obstetrics and Gynaecology, School of Paediatrics and Reproductive Health, The University of Adelaide, South Australia 5005, Australia
| | - Johan Smitz
- Follicle Biology Research Group, Vrije Universiteit Brussel, 1090 Brussels, Belgium
| | - David G Mottershead
- Robinson Research Institute, and Discipline of Obstetrics and Gynaecology, School of Paediatrics and Reproductive Health, The University of Adelaide, South Australia 5005, Australia; Mottasis Oy Ltd., Helsinki, Finland
| | - Robert B Gilchrist
- Robinson Research Institute, and Discipline of Obstetrics and Gynaecology, School of Paediatrics and Reproductive Health, The University of Adelaide, South Australia 5005, Australia; School of Women's and Children's Health, Discipline of Obstetrics and Gynaecology, University of New South Wales, Barker Street, Randwick, Sydney, New South Wales 2013, Australia.
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