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Huang R, Kratka CE, Pea J, McCann C, Nelson J, Bryan JP, Zhou LT, Russo DD, Zaniker EJ, Gandhi AH, Shalek AK, Cleary B, Farhi SL, Duncan FE, Goods BA. Single-cell and spatiotemporal profile of ovulation in the mouse ovary. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2024.05.20.594719. [PMID: 38826447 PMCID: PMC11142086 DOI: 10.1101/2024.05.20.594719] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2024]
Abstract
Ovulation is a spatiotemporally coordinated process that involves several tightly controlled events, including oocyte meiotic maturation, cumulus expansion, follicle wall rupture and repair, and ovarian stroma remodeling. To date, no studies have detailed the precise window of ovulation at single-cell resolution. Here, we performed parallel single-cell RNA-seq and spatial transcriptomics on paired mouse ovaries across an ovulation time course to map the spatiotemporal profile of ovarian cell types. We show that major ovarian cell types exhibit time-dependent transcriptional states enriched for distinct functions and have specific localization profiles within the ovary. We also identified gene markers for ovulation-dependent cell states and validated these using orthogonal methods. Finally, we performed cell-cell interaction analyses to identify ligand-receptor pairs that may drive ovulation, revealing previously unappreciated interactions. Taken together, our data provides a rich and comprehensive resource of murine ovulation that can be mined for discovery by the scientific community.
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Xu R, Wen D, Yin L, Tang Y, Lu S, Gao Y, Pan MH, Han B, Ma B. Estrogen influences the transzonal projection assembly of cumulus-oocyte complexes through G protein-coupled estrogen receptor during goat follicle development. Mol Reprod Dev 2024; 91:e23763. [PMID: 38895803 DOI: 10.1002/mrd.23763] [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: 11/26/2023] [Revised: 05/08/2024] [Accepted: 06/05/2024] [Indexed: 06/21/2024]
Abstract
Estrogen is an important hormone that plays a role in regulating follicle development and oocyte maturation. Transzonal projections (TZPs) act as communication bridges between follicle somatic cells and oocytes, and their dynamic changes are critical for oocyte development and maturation. However, the roles and mechanisms of estrogen in regulating TZPs during follicular development are not yet understood. We found that the proportion of oocytes spontaneously resuming meiosis increases as the follicle grows, which is accompanied by rising estrogen levels in follicles and decreasing TZPs in cumulus-oocyte complex. To further explore the effect of elevated estrogen levels on TZP assembly, additional estrogen was added to the culture system. The increased estrogen level significantly decreased the mRNA and protein expression levels of TZP assembly-related genes. Subsequent research revealed that TZP regulation by estrogen was mediated by the membrane receptor GPER and downstream ERK1/2 signaling pathway. In summary, our study suggests that estrogen may regulate goat oocyte meiosis arrest by decreasing TZP numbers via estrogen-mediated GPER activation during follicle development.
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Affiliation(s)
- Rui Xu
- College of Veterinary Medicine, Northwest A&F University/Key Laboratory of Animal Biotechnology, Ministry of Agriculture, Yangling, China
| | - Dongxu Wen
- College of Veterinary Medicine, Northwest A&F University/Key Laboratory of Animal Biotechnology, Ministry of Agriculture, Yangling, China
| | - Lu Yin
- College of Veterinary Medicine, Northwest A&F University/Key Laboratory of Animal Biotechnology, Ministry of Agriculture, Yangling, China
| | - Yaju Tang
- College of Veterinary Medicine, Northwest A&F University/Key Laboratory of Animal Biotechnology, Ministry of Agriculture, Yangling, China
| | - Sihai Lu
- College of Veterinary Medicine, Northwest A&F University/Key Laboratory of Animal Biotechnology, Ministry of Agriculture, Yangling, China
| | - Yan Gao
- Yulin Animal Husbandry and Veterinary Service Center, Yulin, China
| | - Meng-Hao Pan
- College of Veterinary Medicine, Northwest A&F University/Key Laboratory of Animal Biotechnology, Ministry of Agriculture, Yangling, China
| | - Bin Han
- Yulin Animal Husbandry and Veterinary Service Center, Yulin, China
| | - Baohua Ma
- College of Veterinary Medicine, Northwest A&F University/Key Laboratory of Animal Biotechnology, Ministry of Agriculture, Yangling, China
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Granados-Aparici S, Yang Q, Clarke HJ. SMAD4 promotes somatic-germline contact during murine oocyte growth. eLife 2024; 13:RP91798. [PMID: 38819913 PMCID: PMC11142639 DOI: 10.7554/elife.91798] [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] [Indexed: 06/01/2024] Open
Abstract
Development of the mammalian oocyte requires physical contact with the surrounding granulosa cells of the follicle, which provide it with essential nutrients and regulatory signals. This contact is achieved through specialized filopodia, termed transzonal projections (TZPs), that extend from the granulosa cells to the oocyte surface. Transforming growth factor (TGFβ) family ligands produced by the oocyte increase the number of TZPs, but how they do so is unknown. Using an inducible Cre recombinase strategy together with expression of green fluorescent protein to verify Cre activity in individual cells, we examined the effect of depleting the canonical TGFβ mediator, SMAD4, in mouse granulosa cells. We observed a 20-50% decrease in the total number of TZPs in SMAD4-depleted granulosa cell-oocyte complexes, and a 50% decrease in the number of newly generated TZPs when the granulosa cells were reaggregated with wild-type oocytes. Three-dimensional image analysis revealed that TZPs of SMAD4-depleted cells were longer than controls and more frequently oriented towards the oocyte. Strikingly, the transmembrane proteins, N-cadherin and Notch2, were reduced by 50% in SMAD4-depleted cells. SMAD4 may thus modulate a network of cell adhesion proteins that stabilize the attachment of TZPs to the oocyte, thereby amplifying signalling between the two cell types.
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Affiliation(s)
- Sofia Granados-Aparici
- Research Institute, McGill University Health CentreMontrealCanada
- Present address: Cancer CIBER (CIBERONC)MadridSpain
- Present address: Pathology Department, Medical School, University of Valencia-INCLIVAValenciaSpain
| | - Qin Yang
- Research Institute, McGill University Health CentreMontrealCanada
| | - Hugh J Clarke
- Research Institute, McGill University Health CentreMontrealCanada
- Departments of Obstetrics and Gynecology and Biology, Division of Experimental Medicine, McGill UniversityMontréalCanada
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Fiorentino G, Merico V, Zanoni M, Comincini S, Sproviero D, Garofalo M, Gagliardi S, Cereda C, Lin CJ, Innocenti F, Taggi M, Vaiarelli A, Ubaldi FM, Rienzi L, Cimadomo D, Garagna S, Zuccotti M. Extracellular vesicles secreted by cumulus cells contain microRNAs that are potential regulatory factors of mouse oocyte developmental competence. Mol Hum Reprod 2024; 30:gaae019. [PMID: 38745364 DOI: 10.1093/molehr/gaae019] [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: 06/30/2023] [Revised: 04/23/2024] [Indexed: 05/16/2024] Open
Abstract
The role of cumulus cells (CCs) in the acquisition of oocyte developmental competence is not yet fully understood. In a previous study, we matured cumulus-denuded fully-grown mouse oocytes to metaphase II (MII) on a feeder layer of CCs (FL-CCs) isolated from developmentally competent (FL-SN-CCs) or incompetent (FL-NSN-CCs) SN (surrounded nucleolus) or NSN (not surrounding nucleolus) oocytes, respectively. We observed that oocytes cultured on the former could develop into blastocysts, while those matured on the latter arrested at the 2-cell stage. To investigate the CC factors contributing to oocyte developmental competence, here we focused on the CCs' release into the medium of extracellular vesicles (EVs) and on their miRNA content. We found that, during the 15-h transition to MII, both FL-SN-CCs and FL-NSN-CCs release EVs that can be detected, by confocal microscopy, inside the zona pellucida (ZP) or the ooplasm. The majority of EVs are <200 nm in size, which is compatible with their ability to cross the ZP. Next-generation sequencing of the miRNome of FL-SN-CC versus FL-NSN-CC EVs highlighted 74 differentially expressed miRNAs, with 43 up- and 31 down-regulated. Although most of these miRNAs do not have known roles in the ovary, in silico functional analysis showed that seven of these miRNAs regulate 71 target genes with specific roles in meiosis resumption (N = 24), follicle growth (N = 23), fertilization (N = 1), and the acquisition of oocyte developmental competence (N = 23). Overall, our results indicate CC EVs as emerging candidates of the CC-to-oocyte communication axis and uncover a group of miRNAs as potential regulatory factors.
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Affiliation(s)
- Giulia Fiorentino
- Laboratory of Biology and Biotechnology of Reproduction, Department of Biology and Biotechnology 'Lazzaro Spallanzani', University of Pavia, Pavia, Italy
| | - Valeria Merico
- Laboratory of Biology and Biotechnology of Reproduction, Department of Biology and Biotechnology 'Lazzaro Spallanzani', University of Pavia, Pavia, Italy
| | - Mario Zanoni
- Laboratory of Biology and Biotechnology of Reproduction, Department of Biology and Biotechnology 'Lazzaro Spallanzani', University of Pavia, Pavia, Italy
| | - Sergio Comincini
- Functional Genomics Laboratory, Department of Biology and Biotechnology 'Lazzaro Spallanzani', University of Pavia, Pavia, Italy
| | - Daisy Sproviero
- IFOM, IFOM-The FIRC Institute of Molecular Oncology, Milan, Italy
| | - Maria Garofalo
- Molecular Biology and Transcriptomics Unit, IRCCS Mondino Foundation, Pavia, Italy
| | - Stella Gagliardi
- Molecular Biology and Transcriptomics Unit, IRCCS Mondino Foundation, Pavia, Italy
| | - Cristina Cereda
- Department of Pediatrics, Center of Functional Genomics and Rare Diseases, Buzzi Children's Hospital, Milan, Italy
| | - Chih-Jen Lin
- Centre for Reproductive Health, Institute for Regeneration and Repair, University of Edinburgh, Edinburgh, UK
| | - Federica Innocenti
- IVIRMA Global Research Alliance, GENERA, Clinica Valle Giulia, Rome, Italy
| | - Marilena Taggi
- IVIRMA Global Research Alliance, GENERA, Clinica Valle Giulia, Rome, Italy
| | - Alberto Vaiarelli
- IVIRMA Global Research Alliance, GENERA, Clinica Valle Giulia, Rome, Italy
| | | | - Laura Rienzi
- IVIRMA Global Research Alliance, GENERA, Clinica Valle Giulia, Rome, Italy
- Department of Biomolecular Sciences, University of Urbino "Carlo Bo", Urbino, Italy
| | - Danilo Cimadomo
- IVIRMA Global Research Alliance, GENERA, Clinica Valle Giulia, Rome, Italy
| | - Silvia Garagna
- Laboratory of Biology and Biotechnology of Reproduction, Department of Biology and Biotechnology 'Lazzaro Spallanzani', University of Pavia, Pavia, Italy
| | - Maurizio Zuccotti
- Laboratory of Biology and Biotechnology of Reproduction, Department of Biology and Biotechnology 'Lazzaro Spallanzani', University of Pavia, Pavia, Italy
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Shioya M, Okabe-Kinoshita M, Kobayashi T, Fujita M, Takahashi K. Human metaphase II oocytes with narrow perivitelline space have poor fertilization, developmental, and pregnancy potentials. J Assist Reprod Genet 2024; 41:1449-1458. [PMID: 38499932 PMCID: PMC11143139 DOI: 10.1007/s10815-024-03084-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2023] [Accepted: 03/04/2024] [Indexed: 03/20/2024] Open
Abstract
PURPOSE To analyze the fertilization, developmental, and pregnancy potentials in oocytes with narrow perivitelline space. METHODS Perivitelline space (PVS) of oocytes was evaluated at the time of ICSI, and those without sufficient PVS were judged as oocytes with narrow PVS (NPVS oocytes), and those with sufficient PVS formation were judged as oocytes with non-narrow PVS (non-NPVS oocytes). The analysis included 634 NPVS oocytes from 278 cycles and 12,121 non-NPVS oocytes from 1698 cycles. The fertilization and developmental potentials of NPVS and non-NPVS oocytes were compared by calculating odds ratios using a mixed-effects logistic regression model. We also compared the embryo transfer outcomes of those used for single vitrified-warmed blastocyst transfer after developing into the blastocyst stage. RESULTS NPVS oocytes had higher odds ratios for degeneration (adjusted odds ratio [aOR], 1.555; 95% confidence interval [CI], 1.096-2.206; p = 0.0133) and 0PN (aOR, 1.387; 95% CI, 1.083-1.775; p = 0.0095), resulting in a lower 2PN rate (aOR, 0.761; 95% CI, 0.623-0.929; p = 0.0072). Even embryos with confirmed 2PN had lower odds ratios for cleavage (aOR, 0.501; 95% CI, 0.294-0.853; p = 0.0109) and blastocyst development (Gardner criteria; CC-AA) rates (aOR, 0.612; 95% CI, 0.476-0.788; p = 0.0001). Blastocysts developed from NPVS oocytes had significantly lower odds ratios for clinical pregnancy (aOR, 0.435; 95% CI, 0.222-0.854; p = 0.0156) than those developed from non-NPVS oocytes. CONCLUSIONS Oocytes with NPVS have low fertilization and developmental potential, as well as low likelihood of pregnancy.
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Affiliation(s)
- Masashi Shioya
- Takahashi Women's Clinic, 18-14-6F Shinmachi, Chuo-ku, Chiba, 260-0028, Japan.
- Department of Reproductive Medicine, Graduate School of Medicine, Chiba University, 1-8-1 Inohana, Chuo-ku, Chiba, 260-8670, Japan.
| | | | - Tatsuya Kobayashi
- Department of Reproductive Medicine, Graduate School of Medicine, Chiba University, 1-8-1 Inohana, Chuo-ku, Chiba, 260-8670, Japan
- Department of Regulatory Science, Fujita Health University, Haneda Innovation City Zone A, 1-1-4 Haneda Airport, Ota-ku, Tokyo, 144-0041, Japan
| | - Maki Fujita
- Takahashi Women's Clinic, 18-14-6F Shinmachi, Chuo-ku, Chiba, 260-0028, Japan
| | - Keiichi Takahashi
- Takahashi Women's Clinic, 18-14-6F Shinmachi, Chuo-ku, Chiba, 260-0028, Japan
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Chu Y, Li Q, He Y, Li H, Wang Q, Li S, Wang J, Wang W, Ju S. Exposure to chlorpyrifos interferes with intercellular communication in cumulus-oocyte complexes during porcine oocyte maturation. Food Chem Toxicol 2024; 187:114629. [PMID: 38565334 DOI: 10.1016/j.fct.2024.114629] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2023] [Revised: 02/27/2024] [Accepted: 03/28/2024] [Indexed: 04/04/2024]
Abstract
Chlorpyrifos (CPF), a widely used organophosphorus pesticide (OP) to control pests has been verified reproductive toxicity on mammalian oocytes. However, limited information exists on its correlation with the dysfunction of the intercellular communication in cumulus-oocyte complexes (COCs). Herein, our study utilized porcine COCs as models to directly address the latent impact of CPF on the communication between cumulus cells (CCs) and oocytes during in vitro maturation. The results demonstrated that CPF exposure decreased the rate of the first polar body (PB1) extrusion and blocked meiosis progression. Notably, the cumulus expansion of CPF-exposed COCs was suppressed significantly, accompanied by the down-regulated mRNA levels of cumulus expansion-related genes. Furthermore, the early apoptotic level was raised and the expression of BAX/BCL2 and cleaved caspase 3 was up-regulated in the CCs of CPF-exposed COCs (p < 0.05). Moreover, CPF exposure impaired mRNA levels of antioxidant enzyme-related genes, induced higher levels of reactive oxygen species (ROS) and reduced the levels of mitochondrial membrane potential (MMP) in CCs (p < 0.05). Additionally, the integrated optical density (IOD) rate (cumulus/oocyte) of calcein and the expression of connexin 43 (CX43) was increased in CPF treatment groups (p < 0.05). As well, CPF exposure reduced the expression levels of FSCN1, DAAM1 and MYO10, which resulted in a significant decrease in the number and fluorescence intensity of transzonal projections (TZPs). In conclusion, CPF inhibited the expansion of cumulus and caused oxidative stress and apoptosis as well as disturbed the function of gap junctions (GJs) and TZPs, which eventually resulted in the failure of oocyte maturation.
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Affiliation(s)
- Yajie Chu
- MOE Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, China
| | - Qiao Li
- MOE Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, China
| | - Yijing He
- MOE Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, China
| | - Heran Li
- MOE Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, China
| | - Qijia Wang
- MOE Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, China
| | - Shurui Li
- MOE Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, China
| | - Jianuo Wang
- MOE Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, China
| | - Weihan Wang
- MOE Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, China
| | - Shiqiang Ju
- MOE Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, China.
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Bahety D, Böke E, Rodríguez-Nuevo A. Mitochondrial morphology, distribution and activity during oocyte development. Trends Endocrinol Metab 2024:S1043-2760(24)00064-X. [PMID: 38599901 DOI: 10.1016/j.tem.2024.03.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/12/2023] [Revised: 03/06/2024] [Accepted: 03/08/2024] [Indexed: 04/12/2024]
Abstract
Mitochondria have a crucial role in cellular function and exhibit remarkable plasticity, adjusting both their structure and activity to meet the changing energy demands of a cell. Oocytes, female germ cells that become eggs, undergo unique transformations: the extended dormancy period, followed by substantial increase in cell size and subsequent maturation involving the segregation of genetic material for the next generation, present distinct metabolic challenges necessitating varied mitochondrial adaptations. Recent findings in dormant oocytes challenged the established respiratory complex hierarchies and underscored the extent of mitochondrial plasticity in long-lived oocytes. In this review, we discuss mitochondrial adaptations observed during oocyte development across three vertebrate species (Xenopus, mouse, and human), emphasising current knowledge, acknowledging limitations, and outlining future research directions.
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Affiliation(s)
- Devesh Bahety
- Centre for Genomic Regulation (CRG), The Barcelona Institute of Science and Technology, Barcelona, Spain; Universitat Pompeu Fabra (UPF), Barcelona, Spain
| | - Elvan Böke
- Centre for Genomic Regulation (CRG), The Barcelona Institute of Science and Technology, Barcelona, Spain; Universitat Pompeu Fabra (UPF), Barcelona, Spain.
| | - Aida Rodríguez-Nuevo
- Centre for Genomic Regulation (CRG), The Barcelona Institute of Science and Technology, Barcelona, Spain.
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Hu R, Huang Y, Geng Y, Liu Z, Li F, Zhang Z, Ma W, Song K, Dong H, Song Y, Zhang M. Jiawei Buzhong Yiqi decoction ameliorates polycystic ovary syndrome via oocyte-granulosa cell communication. JOURNAL OF ETHNOPHARMACOLOGY 2024; 323:117654. [PMID: 38158097 DOI: 10.1016/j.jep.2023.117654] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/16/2023] [Revised: 12/18/2023] [Accepted: 12/22/2023] [Indexed: 01/03/2024]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Jiawei Buzhong Yiqi Decoction (JWBZYQ), from records of FuqingzhuNvke, is a classical formula for treating obese women related infertility. JWBZYQ has been shown to be effective in treating polycystic ovary syndrome (PCOS) in both clinical studies and practical practice, with the pharmacological mechanism remaining unknown. AIM OF THE STUDY To explore the potential therapeutic effects and mechanistic insights of JWBZYQ in PCOS. MATERIALS AND METHODS An overweight PCOS rat model was established via testosterone propionate (TP) injection and 45% high-fat diet (HFD). Then they were categorized into five distinct groups: Control group, Model group, low-dose of JWBZYQ (JWBZYQ1) group, high-dose of JWBZYQ (JWBZYQ2) group, and metformin (Met) group. Body weight, estrous cycle, and sex hormone levels were observed. Hematoxylin-Eosin staining was employed to investigate the histological characteristics of the ovaries. To identify the pathways that changed significantly, transcriptome analysis was performed. The protein and mRNA levels of key molecules in ovarian zona pellucida (ZP) organization, transzonal projections (TZPs) assembly, steroid hormone receptors, and steroidogenesis were assessed using phalloidin staining, immunohistochemistry, Western blot, and polymerase chain reaction. RESULTS RNA-seq analysis demonstrated that regulation of hormone secretion, cilium assembly, cell projection assembly, and ZP production may all have crucial impact on the etiology of PCOS and therapeutic effect of JWBZYQ. In particular, PCOS rats exhibited elevated expressions of ZP1-3, which can be reversed by JWBZYQ2 particularly. Simultaneously, TZPs assembly was totally disrupted in PCOS rats, evidenced by the phalloidin staining, upregulated calcium-/calmodulin-dependent protein kinase II beta (CaMKIIβ), and deficient p-CaMKIIβ, myosin X (MYO10), proline-rich tyrosine kinase 2 (PTK2), and Fascin. Nonetheless, JWBZYQ or metformin treatment revived the disturbance, repairing the oocyte-granulosa cell communication, regulating steroidogenesis in PCOS rats. In this way, JWBZYQ and metformin exerted remarkable effects in alleviating altered ovarian morphology and function in PCOS rats, with JWBZYQ2 revealing the best effect. CONCLUSIONS JWBZYQ restored the altered ovarian morphology and function by regulating the oocyte-granulosa cell communication, which was related with ZP organization and TZPs assembly in the ovary.
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Affiliation(s)
- Runan Hu
- Institute of Integrated Traditional Chinese and Western Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China.
| | - Yanjing Huang
- Institute of Integrated Traditional Chinese and Western Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China.
| | - Yuli Geng
- Institute of Integrated Traditional Chinese and Western Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China.
| | - Zhuo Liu
- Institute of Integrated Traditional Chinese and Western Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China.
| | - Fan Li
- Institute of Integrated Traditional Chinese and Western Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China.
| | - Zhuo Zhang
- Institute of Integrated Traditional Chinese and Western Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China.
| | - Wenwen Ma
- Institute of Integrated Traditional Chinese and Western Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China.
| | - Kunkun Song
- Institute of Integrated Traditional Chinese and Western Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China.
| | - Haoxu Dong
- Institute of Integrated Traditional Chinese and Western Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China.
| | - Yufan Song
- Institute of Integrated Traditional Chinese and Western Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China.
| | - Mingmin Zhang
- Institute of Integrated Traditional Chinese and Western Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China.
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9
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Zhu Y, Zhu H, Wu P. Gap junctions in polycystic ovary syndrome: Implications for follicular arrest. Dev Dyn 2024. [PMID: 38501340 DOI: 10.1002/dvdy.706] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2023] [Revised: 02/24/2024] [Accepted: 02/28/2024] [Indexed: 03/20/2024] Open
Abstract
Gap junctions are specialized intercellular conduits that provide a direct pathway between neighboring cells, which are involved in numerous physiological processes, such as cellular differentiation, cell growth, and metabolic coordination. The effect of gap junctional hemichannels in folliculogenesis is particularly obvious, and the down-regulation of connexins is related to abnormal follicle growth. Polycystic ovary syndrome (PCOS) is a ubiquitous endocrine disorder of the reproductive system, affecting the fertility of adult women due to anovulation. Exciting evidence shows that gap junction is involved in the pathological process related to PCOS and affects the development of follicles in women with PCOS. In this review, we examine the expression of connexins in follicular cells of PCOS and figure out whether such communication could have consequences for PCOS women. While along with results from clinical and related animal studies, we summarize the mechanism of connexins involved in the pathogenesis of PCOS.
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Affiliation(s)
- Ying Zhu
- Department of Gynaecology, School of Clinical Medicine, Chengdu University of Traditional Chinese Medicine, Chengdu, Sichuan, China
| | - Hongqiu Zhu
- Department of Gynaecology, School of Medical and Life Sciences, Chengdu University of Traditional Chinese Medicine, Chengdu, Sichuan, China
| | - Peijuan Wu
- Department of Gynaecology, School of Clinical Medicine, Chengdu University of Traditional Chinese Medicine, Chengdu, Sichuan, China
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Mallart C, Netter S, Chalvet F, Claret S, Guichet A, Montagne J, Pret AM, Malartre M. JAK-STAT-dependent contact between follicle cells and the oocyte controls Drosophila anterior-posterior polarity and germline development. Nat Commun 2024; 15:1627. [PMID: 38388656 PMCID: PMC10883949 DOI: 10.1038/s41467-024-45963-z] [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: 05/26/2023] [Accepted: 02/08/2024] [Indexed: 02/24/2024] Open
Abstract
The number of embryonic primordial germ cells in Drosophila is determined by the quantity of germ plasm, whose assembly starts in the posterior region of the oocyte during oogenesis. Here, we report that extending JAK-STAT activity in the posterior somatic follicular epithelium leads to an excess of primordial germ cells in the future embryo. We show that JAK-STAT signaling is necessary for the differentiation of approximately 20 specialized follicle cells maintaining tight contact with the oocyte. These cells define, in the underlying posterior oocyte cortex, the anchoring of the germ cell determinant oskar mRNA. We reveal that the apical surface of these posterior anchoring cells extends long filopodia penetrating the oocyte. We identify two JAK-STAT targets in these cells that are each sufficient to extend the zone of contact with the oocyte, thereby leading to production of extra primordial germ cells. JAK-STAT signaling thus determines a fixed number of posterior anchoring cells required for anterior-posterior oocyte polarity and for the development of the future germline.
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Affiliation(s)
- Charlotte Mallart
- Institute for Integrative Biology of the Cell (I2BC), CEA, CNRS, Université Paris-Saclay, Gif-sur-Yvette, France
| | - Sophie Netter
- Institute for Integrative Biology of the Cell (I2BC), CEA, CNRS, Université de Versailles-Saint-Quentin en Yvelines, Université Paris-Saclay, Gif- sur-Yvette, France
| | - Fabienne Chalvet
- Institute for Integrative Biology of the Cell (I2BC), CEA, CNRS, Université Paris-Saclay, Gif-sur-Yvette, France
| | - Sandra Claret
- Université Paris Cité, CNRS, Institut Jacques Monod, Paris, France
| | - Antoine Guichet
- Université Paris Cité, CNRS, Institut Jacques Monod, Paris, France
| | - Jacques Montagne
- Institute for Integrative Biology of the Cell (I2BC), CEA, CNRS, Université Paris-Saclay, Gif-sur-Yvette, France
| | - Anne-Marie Pret
- Institute for Integrative Biology of the Cell (I2BC), CEA, CNRS, Université de Versailles-Saint-Quentin en Yvelines, Université Paris-Saclay, Gif- sur-Yvette, France
| | - Marianne Malartre
- Institute for Integrative Biology of the Cell (I2BC), CEA, CNRS, Université Paris-Saclay, Gif-sur-Yvette, France.
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11
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Aizawa R, Ibayashi M, Mitsui J, Tsukamoto S. Lipid droplet formation is spatiotemporally regulated in oocytes during follicular development in mice. J Reprod Dev 2024; 70:18-24. [PMID: 38105003 PMCID: PMC10902640 DOI: 10.1262/jrd.2023-055] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2023] Open
Abstract
Communication between oocytes and the surrounding granulosa cells during follicular development is essential for complete oocyte growth. Oocytes contain lipid droplets (LDs), organelles assembled in the endoplasmic reticulum (ER) that store neutral lipids, including triglycerides and cholesterol esters. Although the LD content varies among animals, LDs stored in oocytes have been shown to play an important role in oocyte maturation and preimplantation embryonic development. However, knowledge is lacking regarding how and when LDs are initially produced in developing oocytes within follicles. In the present study, we found that LDs appeared in mouse oocytes in a specific phase during follicular development. The emergence of LDs in intrafollicular oocytes was induced within a similar time window in vitro and in vivo. Fluorescence imaging and electron microscopy revealed that LDs emerging in oocytes during the early stages of follicular growth were in close proximity to the ER. Furthermore, fatty-acid-tracking experiments have revealed that exogenous fatty acids are rapidly incorporated into oocytes, and their uptake is regulated by the interaction between oocytes and granulosa cells, likely in part through transzonal projections. In summary, our results suggest that LD synthesis observed in growing oocytes is spatiotemporally regulated and that oocyte-granulosa cell contact may be involved in LD biosynthesis during follicular development.
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Affiliation(s)
- Ryutaro Aizawa
- Laboratory Animal and Genome Sciences Section, National Institutes for Quantum Science and Technology, Chiba 263-8555, Japan
| | - Megumi Ibayashi
- Laboratory Animal and Genome Sciences Section, National Institutes for Quantum Science and Technology, Chiba 263-8555, Japan
| | - Junichiro Mitsui
- Laboratory Animal and Genome Sciences Section, National Institutes for Quantum Science and Technology, Chiba 263-8555, Japan
- Department of Comprehensive Reproductive Medicine, Graduate School, Tokyo Medical and Dental University, Tokyo 113-8519, Japan
| | - Satoshi Tsukamoto
- Laboratory Animal and Genome Sciences Section, National Institutes for Quantum Science and Technology, Chiba 263-8555, Japan
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12
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Owen CM, Jaffe LA. Luteinizing hormone stimulates ingression of mural granulosa cells within the mouse preovulatory follicle†. Biol Reprod 2024; 110:288-299. [PMID: 37847612 PMCID: PMC10873281 DOI: 10.1093/biolre/ioad142] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2023] [Revised: 09/25/2023] [Accepted: 10/13/2023] [Indexed: 10/19/2023] Open
Abstract
Luteinizing hormone (LH) induces ovulation by acting on its receptors in the mural granulosa cells that surround a mammalian oocyte in an ovarian follicle. However, much remains unknown about how activation of the LH receptor modifies the structure of the follicle such that the oocyte is released and the follicle remnants are transformed into the corpus luteum. The present study shows that the preovulatory surge of LH stimulates LH receptor-expressing granulosa cells, initially located almost entirely in the outer layers of the mural granulosa, to rapidly extend inwards, intercalating between other cells. The cellular ingression begins within 30 min of the peak of the LH surge, and the proportion of LH receptor-expressing cell bodies in the inner half of the mural granulosa layer increases until the time of ovulation, which occurs at about 10 h after the LH peak. During this time, many of the initially flask-shaped cells appear to detach from the basal lamina, acquiring a rounder shape with multiple filipodia. Starting at about 4 h after the LH peak, the mural granulosa layer at the apical surface of the follicle where ovulation will occur begins to thin, and the basolateral surface develops invaginations and constrictions. Our findings raise the question of whether LH stimulation of granulosa cell ingression may contribute to these changes in the follicular structure that enable ovulation.
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Affiliation(s)
- Corie M Owen
- Department of Cell Biology, University of Connecticut Health Center, Farmington, CT, USA
| | - Laurinda A Jaffe
- Department of Cell Biology, University of Connecticut Health Center, Farmington, CT, USA
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13
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Norris RP, Jaffe LA. Granulosa Cells Alone, Without Theca Cells, Can Mediate LH-induced Oocyte Meiotic Resumption. Endocrinology 2024; 165:bqad200. [PMID: 38180498 PMCID: PMC10805430 DOI: 10.1210/endocr/bqad200] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/14/2023] [Revised: 12/26/2023] [Accepted: 12/29/2023] [Indexed: 01/06/2024]
Abstract
Signaling in the granulosa cells of mammalian ovarian follicles is necessary for maintaining prophase arrest in the oocyte and for mediating the resumption of meiosis in response to luteinizing hormone (LH). However, the follicle also includes an outer layer of theca cells, some of which express receptors for LH. To investigate whether theca cells are required for maintaining meiotic arrest and reinitiating meiosis in response to LH, we mechanically separated the granulosa cells and oocyte from the theca and basal lamina. This was accomplished by cutting a slit in the outer surface of isolated follicles such that the mural granulosa cells and cumulus-oocyte complex were extruded from the theca shell, forming a lawn of cells on an organotypic membrane. The remnant of theca cells and basal lamina was then removed. The separation of the granulosa cells from the theca cells and basal lamina was demonstrated by immunofluorescence localization of endomucin (blood vessels of the theca) and laminin gamma (basal lamina). Cells comprising these granulosa cell-oocyte complexes expressed LH receptors and were connected by gap junctions. Oocytes within these granulosa cell complexes maintained meiotic arrest and resumed meiosis in response to LH, showing that the granulosa cells alone, without theca cells, transduce these signals. This semi-intact and mostly 2-dimensional preparation could facilitate imaging studies of follicle physiology.
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Affiliation(s)
- Rachael P Norris
- Department of Cell Biology, University of Connecticut Health Center, Farmington, CT 06030, USA
| | - Laurinda A Jaffe
- Department of Cell Biology, University of Connecticut Health Center, Farmington, CT 06030, USA
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14
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Somfai T. Vitrification of immature oocytes in pigs. Anim Sci J 2024; 95:e13943. [PMID: 38578008 DOI: 10.1111/asj.13943] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2023] [Revised: 02/27/2024] [Accepted: 03/04/2024] [Indexed: 04/06/2024]
Abstract
Cryopreservation of oocytes is an important technology for the in vitro gene banking of female germplasm. Although slow freezing is not feasible, porcine oocytes survive vitrification at high rates. Cryopreservation at the germinal vesicle stage appears to be more advantageous than that at the metaphase-II stage. Several factors are considered to affect the success of vitrification and subsequent utilization of immature porcine oocytes such as the device, the protocols for cryoprotectant application, warming, and the post-warming culture. Although live piglets could be obtained from vitrified immature oocytes, their competence to develop to the blastocyst stage is still reduced compared to their non-vitrified counterparts, indicating that there is room for further improvement. Vitrified oocytes suffer various types of damage and alteration which may reduce their developmental ability. Some of these can recover to some extent during subsequent culture, such as the damage of the cytoskeleton and mitochondria. Others such as premature nuclear progression, DNA damage and epigenetic alterations will require further research to be clarified and addressed. To date, the practical application of oocyte vitrification in pigs has been confined to the gene banking of a few native breeds.
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Affiliation(s)
- Tamás Somfai
- Animal Model Development Group, Division of Biomaterial Sciences, Institute of Agrobiological Sciences, National Agriculture and Food Research Organization, Tsukuba, Japan
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15
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Xu R, Pan M, Yin L, Zhang Y, Tang Y, Lu S, Gao Y, Wei Q, Han B, Ma B. C-Type Natriuretic Peptide Pre-Treatment Improves Maturation Rate of Goat Oocytes by Maintaining Transzonal Projections, Spindle Morphology, and Mitochondrial Function. Animals (Basel) 2023; 13:3880. [PMID: 38136917 PMCID: PMC10740921 DOI: 10.3390/ani13243880] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2023] [Revised: 11/23/2023] [Accepted: 12/14/2023] [Indexed: 12/24/2023] Open
Abstract
C-type natriuretic peptide (CNP) is a peptide molecule naturally found in follicles and can be used to extend meiotic resumption and enhance the potential for oocytes to develop. However, the mechanism by which CNP improves goat oocyte quality remains unclear. In this study, cumulus-oocyte complexes (COCs) from goats were pre-treated with CNP prior to IVM, and the results showed that pre-treatment with CNP enhanced goat oocyte maturation. First, we discovered that CNP maintained communication between cumulus cells and oocytes by regulating the transzonal projections (TZPs). We then found that CNP treatment reduced abnormal spindle formation and increased the expression of genes associated with spindle assembly and the spindle assembly checkpoint. Moreover, further analysis showed that oocytes exhibited better antioxidant ability in the CNP treatment group, which mainly manifested in higher glutathione (GSH) and lower reactive oxygen species (ROS) concentrations. Enhanced mitochondrial activity was signified via the augmented expression of mitochondrial oxidative metabolism and fusion and fission-related genes, thus diminishing the apoptosis of the oocytes. Overall, these results provide novel insights into the potential mechanism by which CNP treatment before IVM can improve oocyte quality.
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Affiliation(s)
- Rui Xu
- Key Laboratory of Animal Biotechnology, Ministry of Agriculture, College of Veterinary Medicine, Northwest A&F University, Yangling 712100, China; (R.X.); (M.P.); (L.Y.); (Y.Z.); (Q.W.)
| | - Menghao Pan
- Key Laboratory of Animal Biotechnology, Ministry of Agriculture, College of Veterinary Medicine, Northwest A&F University, Yangling 712100, China; (R.X.); (M.P.); (L.Y.); (Y.Z.); (Q.W.)
| | - Lu Yin
- Key Laboratory of Animal Biotechnology, Ministry of Agriculture, College of Veterinary Medicine, Northwest A&F University, Yangling 712100, China; (R.X.); (M.P.); (L.Y.); (Y.Z.); (Q.W.)
| | - Yiqian Zhang
- Key Laboratory of Animal Biotechnology, Ministry of Agriculture, College of Veterinary Medicine, Northwest A&F University, Yangling 712100, China; (R.X.); (M.P.); (L.Y.); (Y.Z.); (Q.W.)
| | - Yaju Tang
- Key Laboratory of Animal Biotechnology, Ministry of Agriculture, College of Veterinary Medicine, Northwest A&F University, Yangling 712100, China; (R.X.); (M.P.); (L.Y.); (Y.Z.); (Q.W.)
| | - Sihai Lu
- Key Laboratory of Animal Biotechnology, Ministry of Agriculture, College of Veterinary Medicine, Northwest A&F University, Yangling 712100, China; (R.X.); (M.P.); (L.Y.); (Y.Z.); (Q.W.)
| | - Yan Gao
- Yulin Animal Husbandry and Veterinary Service Center, Yulin 719000, China
| | - Qiang Wei
- Key Laboratory of Animal Biotechnology, Ministry of Agriculture, College of Veterinary Medicine, Northwest A&F University, Yangling 712100, China; (R.X.); (M.P.); (L.Y.); (Y.Z.); (Q.W.)
| | - Bin Han
- Yulin Animal Husbandry and Veterinary Service Center, Yulin 719000, China
| | - Baohua Ma
- Key Laboratory of Animal Biotechnology, Ministry of Agriculture, College of Veterinary Medicine, Northwest A&F University, Yangling 712100, China; (R.X.); (M.P.); (L.Y.); (Y.Z.); (Q.W.)
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16
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Zhang CH, Liu XY, Wang J. Essential Role of Granulosa Cell Glucose and Lipid Metabolism on Oocytes and the Potential Metabolic Imbalance in Polycystic Ovary Syndrome. Int J Mol Sci 2023; 24:16247. [PMID: 38003436 PMCID: PMC10671516 DOI: 10.3390/ijms242216247] [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: 10/09/2023] [Revised: 11/06/2023] [Accepted: 11/11/2023] [Indexed: 11/26/2023] Open
Abstract
Granulosa cells are crucial for the establishment and maintenance of bidirectional communication among oocytes. Various intercellular material exchange modes, including paracrine and gap junction, are used between them to achieve the efficient delivery of granulosa cell structural components, energy substrates, and signaling molecules to oocytes. Glucose metabolism and lipid metabolism are two basic energy metabolism pathways in granulosa cells; these are involved in the normal development of oocytes. Pyruvate, produced by granulosa cell glycolysis, is an important energy substrate for oocyte development. Granulosa cells regulate changes in intrafollicular hormone levels through the processing of steroid hormones to control the development process of oocytes. This article reviews the material exchange between oocytes and granulosa cells and expounds the significance of granulosa cells in the development of oocytes through both glucose metabolism and lipid metabolism. In addition, we discuss the effects of glucose and lipid metabolism on oocytes under pathological conditions and explore its relationship to polycystic ovary syndrome (PCOS). A series of changes were found in the endogenous molecules and ncRNAs that are related to glucose and lipid metabolism in granulosa cells under PCOS conditions. These findings provide a new therapeutic target for patients with PCOS; additionally, there is potential for improving the fertility of patients with PCOS and the clinical outcomes of assisted reproduction.
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Affiliation(s)
- Chen-Hua Zhang
- Queen Mary School, Medical College, Nanchang University, Nanchang 330006, China; (C.-H.Z.); (X.-Y.L.)
| | - Xiang-Yi Liu
- Queen Mary School, Medical College, Nanchang University, Nanchang 330006, China; (C.-H.Z.); (X.-Y.L.)
| | - Jing Wang
- Department of Cell Biology, School of Medicine, Nanchang University, Nanchang 330006, China
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17
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Dipali SS, Suebthawinkul C, Burdette JE, Pavone ME, Duncan FE. Human follicular fluid elicits select dose- and age-dependent effects on mouse oocytes and cumulus-oocyte complexes in a heterologous in vitro maturation assay. Mol Hum Reprod 2023; 29:gaad039. [PMID: 37950499 PMCID: PMC10674105 DOI: 10.1093/molehr/gaad039] [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: 01/20/2023] [Revised: 10/11/2023] [Indexed: 11/12/2023] Open
Abstract
Follicular fluid (FF) is a primary microenvironment of the oocyte within an antral follicle. Although several studies have defined the composition of human FF in normal physiology and determined how it is altered in disease states, the direct impacts of human FF on the oocyte are not well understood. The difficulty of obtaining suitable numbers of human oocytes for research makes addressing such a question challenging. Therefore, we used a heterologous model in which we cultured mouse oocytes in human FF. To determine whether FF has dose-dependent effects on gamete quality, we performed in vitro maturation of denuded oocytes from reproductively young mice (6-12 weeks) in 10%, 50%, or 100% FF from participants of mid-reproductive age (32-36 years). FF impacted meiotic competence in a dose-dependent manner, with concentrations >10% inhibiting meiotic progression and resulting in spindle and chromosome alignment defects. We previously demonstrated that human FF acquires a fibro-inflammatory cytokine signature with age. Thus, to determine whether exposure to an aging FF microenvironment contributes to the age-dependent decrease in gamete quality, we matured denuded oocytes and cumulus-oocyte complexes (COCs) in FF from reproductively young (28-30 years) and old (40-42 years) participants. FF decreased meiotic progression of COCs, but not oocytes, from reproductively young and old (9-12 months) mice in an age-dependent manner. Moreover, FF had modest age-dependent impacts on mitochondrial aggregation in denuded oocytes and cumulus layer expansion dynamics in COCs, which may influence fertilization or early embryo development. Overall, these findings demonstrate that acute human FF exposure can impact select markers of mouse oocyte quality in both dose- and age-dependent manners.
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Affiliation(s)
- Shweta S Dipali
- Department of Obstetrics and Gynecology, Feinberg School of Medicine, Northwestern University, Chicago, IL, USA
| | - Chanakarn Suebthawinkul
- Department of Obstetrics and Gynecology, Feinberg School of Medicine, Northwestern University, Chicago, IL, USA
- Department of Obstetrics and Gynecology, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand
| | - Joanna E Burdette
- Department of Pharmaceutical Sciences, University of Illinois at Chicago, Chicago, IL, USA
| | - Mary Ellen Pavone
- Department of Obstetrics and Gynecology, Feinberg School of Medicine, Northwestern University, Chicago, IL, USA
| | - Francesca E Duncan
- Department of Obstetrics and Gynecology, Feinberg School of Medicine, Northwestern University, Chicago, IL, USA
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18
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Silva BR, Barrozo LG, Nascimento DR, Costa FC, Azevedo VAN, Paulino LRFM, Lopes EPF, Batista ALPS, Aguiar FLN, Peixoto CA, Donato MAM, Rodrigues APR, Silva JRV. Effects of cyclic adenosine monophosphate modulating agents during oocyte pre-maturation and the role of melatonin on in vitro maturation of bovine cumulus-oocyte complexes. Anim Reprod Sci 2023; 257:107327. [PMID: 37696223 DOI: 10.1016/j.anireprosci.2023.107327] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2023] [Revised: 08/16/2023] [Accepted: 09/01/2023] [Indexed: 09/13/2023]
Abstract
This study investigated the effects of cyclic adenosine monophosphate modulating during cumulus-oocyte complexes (COCs) pre-maturation and the role of melatonin on in vitro maturation (IVM) of bovine COCs. In experiment one, COCs were pre-matured for 8 h in control medium or with 3-isobutyl-1-methylxanthine (IBMX) and forskolin, IBMX and C-type natriuretic peptide, c-type natriuretic peptide and forskolin or IBMX, forskolin and c-type natriuretic peptide. Then, meiotic progression was evaluated. In experiment two, COCs were pre-matured, followed by IVM in control medium alone or with 10-6, 10-7 or 10-8 M melatonin. After IVM, chromatin configuration, transzonal projections (TZPs), reactive oxygen species, mitochondrial distribution, ultrastructure and mRNA expression for antioxidant enzymes were evaluated. In experiment 1, COCs pre-matured with both C-type natriuretic peptide and forskolin or C-type natriuretic peptide, forskolin and IBMX had lower meiotic resumption rate when compared to control. Considering that IBMX had not an additional effect to potentiate inhibition of meiotic resumption, a combination of C-type natriuretic peptide and forskolin was chosen. In experiment 2, COCs matured with 10-8 M melatonin had greater rates of meiotic resumption when compared to the other treatments (P < 0.05). The COCs matured with 10-7 or 10-8 M melatonin had greater mitochondrial activity (P < 0.05), while those matured with 10-6 or 10-8 M of melatonin had greater levels of TZPs. Ultrastructure of oocyte and cumulus cells after IVM with melatonin was relatively well preserved. COCs matured with 10-8 M melatonin increased mRNA expression for superoxide dismutase (SOD) and catalase (CAT) (P < 0.05), when compared to non-cultured and pre-matured COCs, respectively. In conclusion, bovine COC pre-maturation with C-type natriuretic peptide and forskolin, followed by IVM with 10-8 M melatonin improves meiotic resumption rates, TZPs, mitochondrial distribution and mRNA expression for SOD and CAT.
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Affiliation(s)
- Bianca R Silva
- Laboratory of Biotechnology and Physiology of Reproduction (LABIREP), Federal University of Ceara, Av. Maurocélio Rocha Ponte 100, Sobral 62041-040, Ceará, Brazil
| | - Laryssa G Barrozo
- Laboratory of Biotechnology and Physiology of Reproduction (LABIREP), Federal University of Ceara, Av. Maurocélio Rocha Ponte 100, Sobral 62041-040, Ceará, Brazil
| | - Danisvânia R Nascimento
- Laboratory of Biotechnology and Physiology of Reproduction (LABIREP), Federal University of Ceara, Av. Maurocélio Rocha Ponte 100, Sobral 62041-040, Ceará, Brazil
| | - Francisco C Costa
- Laboratory of Biotechnology and Physiology of Reproduction (LABIREP), Federal University of Ceara, Av. Maurocélio Rocha Ponte 100, Sobral 62041-040, Ceará, Brazil
| | - Venância A N Azevedo
- Laboratory of Biotechnology and Physiology of Reproduction (LABIREP), Federal University of Ceara, Av. Maurocélio Rocha Ponte 100, Sobral 62041-040, Ceará, Brazil
| | - Laís R F M Paulino
- Laboratory of Biotechnology and Physiology of Reproduction (LABIREP), Federal University of Ceara, Av. Maurocélio Rocha Ponte 100, Sobral 62041-040, Ceará, Brazil
| | - Everton P F Lopes
- Faculty of Veterinary Medicine, Laboratory of Manipulation of Oocytes and Preantral Follicles (LAMOFOPA), State University of Ceará, Fortaleza, Ceará, Brazil
| | - Ana L P S Batista
- Laboratory of Biotechnology and Physiology of Reproduction (LABIREP), Federal University of Ceara, Av. Maurocélio Rocha Ponte 100, Sobral 62041-040, Ceará, Brazil
| | - Francisco L N Aguiar
- Department of Veterinary Medicine, Sousa Campus, Federal Institute of Education, Science and Technology of Paraíba, Sousa, Paraíba, Brazil
| | - Christina A Peixoto
- Laboratory of Ultrastructure, CPqAM/FIOCRUZ, Federal University of Pernambuco, Recife, Pernambuco, Brazil
| | - Mariana A M Donato
- Laboratory of Ultrastructure, CPqAM/FIOCRUZ, Federal University of Pernambuco, Recife, Pernambuco, Brazil
| | - Ana P R Rodrigues
- Faculty of Veterinary Medicine, Laboratory of Manipulation of Oocytes and Preantral Follicles (LAMOFOPA), State University of Ceará, Fortaleza, Ceará, Brazil
| | - José R V Silva
- Laboratory of Biotechnology and Physiology of Reproduction (LABIREP), Federal University of Ceara, Av. Maurocélio Rocha Ponte 100, Sobral 62041-040, Ceará, Brazil.
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19
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Owen CM, Jaffe LA. Luteinizing hormone stimulates ingression of mural granulosa cells within the mouse preovulatory follicle. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.04.21.537855. [PMID: 37131774 PMCID: PMC10153244 DOI: 10.1101/2023.04.21.537855] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/04/2023]
Abstract
Luteinizing hormone (LH) induces ovulation by acting on its receptors in the mural granulosa cells that surround a mammalian oocyte in an ovarian follicle. However, much remains unknown about how activation of the LH receptor modifies the structure of the follicle such that the oocyte is released and the follicle remnants are transformed into the corpus luteum. The present study shows that the preovulatory surge of LH stimulates LH receptor-expressing granulosa cells, initially located almost entirely in the outer layers of the mural granulosa, to rapidly extend inwards, intercalating between other cells. The cellular ingression begins within 30 minutes of the peak of the LH surge, and the proportion of LH receptor-expressing cell bodies in the inner half of the mural granulosa layer increases until the time of ovulation, which occurs at about 10 hours after the LH peak. During this time, many of the initially flask-shaped cells appear to detach from the basal lamina, acquiring a rounder shape with multiple filipodia. Starting at about 4 hours after the LH peak, the mural granulosa layer at the apical surface of the follicle where ovulation will occur begins to thin, and the basolateral surface develops invaginations and constrictions. Our findings raise the question of whether LH stimulation of granulosa cell ingression may contribute to these changes in the follicular structure that enable ovulation.
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Affiliation(s)
- Corie M. Owen
- Department of Cell Biology, University of Connecticut Health Center, Farmington, CT 06030 USA
| | - Laurinda A. Jaffe
- Department of Cell Biology, University of Connecticut Health Center, Farmington, CT 06030 USA
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20
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Yang J, Kamstra J, Legler J, Aardema H. The impact of microplastics on female reproduction and early life. Anim Reprod 2023; 20:e20230037. [PMID: 37547566 PMCID: PMC10399130 DOI: 10.1590/1984-3143-ar2023-0037] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2023] [Accepted: 06/14/2023] [Indexed: 08/08/2023] Open
Abstract
Plastic pollution in our environment is one of the most important global health concerns right now. Micro- and nanoplastics (MNPs) are taken up by both humans and animals, mainly via food and water, and can pass important epithelial barriers. Indications of plastics in the blood circulation have recently been shown in both humans and farm animals, but standardized methods to quantify the exact levels of MNPs to which we are exposed are currently lacking. Potential hazards of MNPs are being investigated very recently, including the impact that MNPs may have on reproduction. However, studies on mammalian reproduction are scarce, but a wealth of data from aquatic species indicates reproductive effects of MNPs. The first studies in rodent models demonstrate that MNPs reach the gonads after oral exposure and may impact offspring after maternal exposure during the gestational period. These effects may arise from the particles themselves or the presence of plastic contaminants that leach from plastics. Plastic contamination has been detected in human placentas, fetal fluid and the meconium of newborns, indicating the presence of plastics from the very first start of life. Currently there is a lack of studies that investigate the impact of MNP exposure during the periconception and embryonic period, whereas this is an extremely sensitive period that needs considerable attention with the growing amount of plastics in our environment.
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Affiliation(s)
- Jiayi Yang
- Farm Animal Health, Department of Population Health Sciences, Faculty of Veterinary Medicine, Utrecht University, Utrecht, Netherlands
- Institute for Risk Assessment Sciences, Department of Population Health Sciences, Faculty of Veterinary Medicine, Utrecht University, Utrecht, Netherlands
| | - Jorke Kamstra
- Institute for Risk Assessment Sciences, Department of Population Health Sciences, Faculty of Veterinary Medicine, Utrecht University, Utrecht, Netherlands
| | - Juliette Legler
- Institute for Risk Assessment Sciences, Department of Population Health Sciences, Faculty of Veterinary Medicine, Utrecht University, Utrecht, Netherlands
| | - Hilde Aardema
- Farm Animal Health, Department of Population Health Sciences, Faculty of Veterinary Medicine, Utrecht University, Utrecht, Netherlands
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21
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Coxir SA, Costa GMJ, Santos CFD, Alvarenga RDLLS, Lacerda SMDSN. From in vivo to in vitro: exploring the key molecular and cellular aspects of human female gametogenesis. Hum Cell 2023:10.1007/s13577-023-00921-7. [PMID: 37237248 DOI: 10.1007/s13577-023-00921-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2023] [Accepted: 05/17/2023] [Indexed: 05/28/2023]
Abstract
Human oogenesis is a highly complex and not yet fully understood process due to ethical and technological barriers that limit studies in the field. In this context, replicating female gametogenesis in vitro would not only provide a solution for some infertility problems, but also be an excellent study model to better understand the biological mechanisms that determine the formation of the female germline. In this review, we explore the main cellular and molecular aspects involved in human oogenesis and folliculogenesis in vivo, from the specification of primordial germ cells (PGCs) to the formation of the mature oocyte. We also sought to describe the important bidirectional relationship between the germ cell and the follicular somatic cells. Finally, we address the main advances and different methodologies used in the search for obtaining cells of the female germline in vitro.
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Affiliation(s)
- Sarah Abreu Coxir
- Laboratory of Cellular Biology, Department of Morphology, Institute of Biological Sciences, Federal University of Minas Gerais, Belo Horizonte, MG, 31270-901, Brazil
| | - Guilherme Mattos Jardim Costa
- Laboratory of Cellular Biology, Department of Morphology, Institute of Biological Sciences, Federal University of Minas Gerais, Belo Horizonte, MG, 31270-901, Brazil
| | - Camilla Fernandes Dos Santos
- Laboratory of Cellular Biology, Department of Morphology, Institute of Biological Sciences, Federal University of Minas Gerais, Belo Horizonte, MG, 31270-901, Brazil
| | | | - Samyra Maria Dos Santos Nassif Lacerda
- Laboratory of Cellular Biology, Department of Morphology, Institute of Biological Sciences, Federal University of Minas Gerais, Belo Horizonte, MG, 31270-901, Brazil.
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Costa CB, Fair T, Seneda MM. Review: Environment of the ovulatory follicle: modifications and use of biotechnologies to enhance oocyte competence and increase fertility in cattle. Animal 2023; 17 Suppl 1:100866. [PMID: 37567670 DOI: 10.1016/j.animal.2023.100866] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2022] [Revised: 05/15/2023] [Accepted: 05/16/2023] [Indexed: 08/13/2023] Open
Abstract
The oocyte is the basis of life, supporting development from a fertilized cell to an independent multicellular organism. The oocyte's competence to drive the first cell cycles postfertilization are critical to embryonic survival and subsequent successful pregnancy. Coupled with the complex processes of follicle assembly, activation, differentiation, growth, and terminal maturation, oocyte developmental competence is gradually acquired during oocyte growth and meiotic maturation. Most reproduction management technologies and interventions are centered around these highly coordinated processes, targeting the ovarian follicle and the oocyte within. Thus, our objective was to highlight key aspects of oocyte and follicle development in cattle, and to discuss recent advances in oocyte and follicle-centered reproductive biotechnologies.
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Affiliation(s)
- Camila Bortoliero Costa
- Department of Biological Sciences, School of Sciences and Languages, São Paulo State University (UNESP), Campus Assis, São Paulo, Brazil; Graduate Program in Pharmacology and Biotechnology, Institute of Biosciences, UNESP, Botucatu, São Paulo, Brazil
| | - Trudee Fair
- School of Agriculture and Food Science, University College Dublin, Ireland
| | - Marcelo M Seneda
- State University of Londrina (UEL), Laboratory of Animal Reproduction, Londrina, PR, Brazil.
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