1
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Kunitomi C, Romero M, Daldello EM, Schindler K, Conti M. Multiple intersecting pathways are involved in CPEB1 phosphorylation and regulation of translation during mouse oocyte meiosis. Development 2024; 151:dev202712. [PMID: 38785133 PMCID: PMC11190569 DOI: 10.1242/dev.202712] [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: 01/17/2024] [Accepted: 04/28/2024] [Indexed: 05/25/2024]
Abstract
The RNA-binding protein cytoplasmic polyadenylation element binding 1 (CPEB1) plays a fundamental role in regulating mRNA translation in oocytes. However, the specifics of how and which protein kinase cascades modulate CPEB1 activity are still controversial. Using genetic and pharmacological tools, and detailed time courses, we have re-evaluated the relationship between CPEB1 phosphorylation and translation activation during mouse oocyte maturation. We show that both the CDK1/MAPK and AURKA/PLK1 pathways converge on CPEB1 phosphorylation during prometaphase of meiosis I. Only inactivation of the CDK1/MAPK pathway disrupts translation, whereas inactivation of either pathway alone leads to CPEB1 stabilization. However, CPEB1 stabilization induced by inactivation of the AURKA/PLK1 pathway does not affect translation, indicating that destabilization and/or degradation is not linked to translational activation. The accumulation of endogenous CCNB1 protein closely recapitulates the translation data that use an exogenous template. These findings support the overarching hypothesis that the activation of translation during prometaphase in mouse oocytes relies on a CDK1/MAPK-dependent CPEB1 phosphorylation, and that translational activation precedes CPEB1 destabilization.
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Affiliation(s)
- Chisato Kunitomi
- Center for Reproductive Sciences, University of California, San Francisco, CA 94143, USA
- Eli and Edythe Broad Center of Regeneration Medicine and Stem Cell Research, University of California, San Francisco, CA 94143, USA
- Department of Obstetrics and Gynecology and Reproductive Sciences, University of California, San Francisco, CA 94143, USA
| | - Mayra Romero
- Rutgers, The State University of New Jersey, Piscataway, NJ 08854, USA
- Human Genetics Institute of New Jersey, Piscataway, NJ 08854, USA
| | - Enrico Maria Daldello
- Sorbonne Université, CNRS, Laboratoire de Biologie du Développement - Institut de Biologie Paris Seine, LBD - IBPS, F-75005 Paris, France
| | - Karen Schindler
- Rutgers, The State University of New Jersey, Piscataway, NJ 08854, USA
- Human Genetics Institute of New Jersey, Piscataway, NJ 08854, USA
| | - Marco Conti
- Center for Reproductive Sciences, University of California, San Francisco, CA 94143, USA
- Eli and Edythe Broad Center of Regeneration Medicine and Stem Cell Research, University of California, San Francisco, CA 94143, USA
- Department of Obstetrics and Gynecology and Reproductive Sciences, University of California, San Francisco, CA 94143, USA
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2
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Huang W, Li X, Yang H, Huang H. The impact of maternal age on aneuploidy in oocytes: Reproductive consequences, molecular mechanisms, and future directions. Ageing Res Rev 2024; 97:102292. [PMID: 38582380 DOI: 10.1016/j.arr.2024.102292] [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: 11/26/2023] [Revised: 03/12/2024] [Accepted: 04/01/2024] [Indexed: 04/08/2024]
Abstract
Age-related aneuploidy in human oocytes is a major factor contributing to decreased fertility and adverse reproductive outcomes. As females age, their oocytes are more prone to meiotic chromosome segregation errors, leading primarily to aneuploidy. Elevated aneuploidy rates have also been observed in oocytes from very young, prepubertal conceptions. A key barrier to developing effective treatments for age-related oocyte aneuploidy is our incomplete understanding of the molecular mechanisms involved. The challenge is becoming increasingly critical as more people choose to delay childbearing, a trend that has significant societal implications. In this review, we summarize current knowledge regarding the process of oocyte meiosis and folliculogenesis, highlighting the relationship between age and chromosomal aberrations in oocytes and embryos, and integrate proposed mechanisms of age-related meiotic disturbances across structural, protein, and genomic levels. Our goal is to spur new research directions and therapeutic avenues.
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Affiliation(s)
- Weiwei Huang
- Obstetrics and Gynecology Hospital, Institute of Reproduction and Development, Fudan University, Shanghai, China; Shanghai Key Laboratory of Reproduction and Development, Shanghai, China; Research Units of Embryo Original Diseases, Chinese Academy of Medical Sciences (No. 2019RU056), Shanghai, China
| | - Xinyuan Li
- Obstetrics and Gynecology Hospital, Institute of Reproduction and Development, Fudan University, Shanghai, China; Shanghai Key Laboratory of Reproduction and Development, Shanghai, China; Research Units of Embryo Original Diseases, Chinese Academy of Medical Sciences (No. 2019RU056), Shanghai, China
| | - Hongbo Yang
- Obstetrics and Gynecology Hospital, Institute of Reproduction and Development, Fudan University, Shanghai, China; Shanghai Key Laboratory of Reproduction and Development, Shanghai, China; Research Units of Embryo Original Diseases, Chinese Academy of Medical Sciences (No. 2019RU056), Shanghai, China.
| | - Hefeng Huang
- Obstetrics and Gynecology Hospital, Institute of Reproduction and Development, Fudan University, Shanghai, China; Shanghai Key Laboratory of Reproduction and Development, Shanghai, China; Research Units of Embryo Original Diseases, Chinese Academy of Medical Sciences (No. 2019RU056), Shanghai, China; Shanghai Key Laboratory of Embryo Original Diseases, Shanghai, China; Department of Obstetrics and Gynecology, International Institutes of Medicine, the Fourth Affiliated Hospital of Zhejiang University School of Medicine, Yiwu, China; Key Laboratory of Reproductive Genetics (Ministry of Education), Department of Reproductive Endocrinology, Women's Hospital, Zhejiang University School of Medicine, Hangzhou, China.
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3
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Kunitomi C, Romero M, Daldello EM, Schindler K, Conti M. Multiple intersecting pathways are involved in the phosphorylation of CPEB1 to activate translation during mouse oocyte meiosis. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2024.01.17.575938. [PMID: 38293116 PMCID: PMC10827138 DOI: 10.1101/2024.01.17.575938] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/01/2024]
Abstract
The RNA-binding protein cytoplasmic polyadenylation element binding 1 (CPEB1) plays a fundamental role in the regulation of mRNA translation in oocytes. However, the nature of protein kinase cascades modulating the activity of CPEB1 is still a matter of controversy. Using genetic and pharmacological tools and detailed time courses, here we have reevaluated the relationship between CPEB1 phosphorylation and the activation of translation during mouse oocyte maturation. We show that both the CDK1/MAPK and AURKA/PLK1 pathways converge on the phosphorylation of CPEB1 during prometaphase. Only inactivation of the CDK1/MAPK pathway disrupts translation, while inactivation of either pathway leads to CPEB1 stabilization. However, stabilization of CPEB1 induced by inactivation of the AURKA/PLK1 does not affect translation, indicating that destabilization/degradation can be dissociated from translational activation. The accumulation of the endogenous CCNB1 protein closely recapitulates the translation data. These findings support the overarching hypothesis that the activation of translation in prometaphase in mouse oocytes relies on a CDK1-dependent CPEB1 phosphorylation, and this translational activation precedes CPEB1 destabilization.
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Affiliation(s)
- Chisato Kunitomi
- Center for Reproductive Sciences, University of California, San Francisco, CA 94143, USA
- Eli and Edythe Broad Center of Regeneration Medicine and Stem Cell Research, University of California, San Francisco, CA 94143, USA
- Department of Obstetrics and Gynecology and Reproductive Sciences, University of California, San Francisco, CA 94143, USA
| | - Mayra Romero
- Department of Obstetrics and Gynecology and Reproductive Sciences, University of California, San Francisco, CA 94143, USA
- Human Genetics Institute of New Jersey
| | - Enrico Maria Daldello
- Sorbonne Université, CNRS, Laboratoire de Biologie du Développement - Institut de Biologie Paris Seine, LBD - IBPS, F-75005 Paris, France
| | - Karen Schindler
- Department of Obstetrics and Gynecology and Reproductive Sciences, University of California, San Francisco, CA 94143, USA
- Human Genetics Institute of New Jersey
| | - Marco Conti
- Center for Reproductive Sciences, University of California, San Francisco, CA 94143, USA
- Eli and Edythe Broad Center of Regeneration Medicine and Stem Cell Research, University of California, San Francisco, CA 94143, USA
- Department of Obstetrics and Gynecology and Reproductive Sciences, University of California, San Francisco, CA 94143, USA
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4
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Kim HM, Kang MK, Seong SY, Jo JH, Kim MJ, Shin EK, Lee CG, Han SJ. Meiotic Cell Cycle Progression in Mouse Oocytes: Role of Cyclins. Int J Mol Sci 2023; 24:13659. [PMID: 37686466 PMCID: PMC10487953 DOI: 10.3390/ijms241713659] [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: 08/14/2023] [Revised: 08/31/2023] [Accepted: 09/01/2023] [Indexed: 09/10/2023] Open
Abstract
All eukaryotic cells, including oocytes, utilize an engine called cyclin-dependent kinase (Cdk) to drive the cell cycle. Cdks are activated by a co-factor called cyclin, which regulates their activity. The key Cdk-cyclin complex that regulates the oocyte cell cycle is known as Cdk1-cyclin B1. Recent studies have elucidated the roles of other cyclins, such as B2, B3, A2, and O, in oocyte cell cycle regulation. This review aims to discuss the recently discovered roles of various cyclins in mouse oocyte cell cycle regulation in accordance with the sequential progression of the cell cycle. In addition, this review addresses the translation and degradation of cyclins to modulate the activity of Cdks. Overall, the literature indicates that each cyclin performs unique and redundant functions at various stages of the cell cycle, while their expression and degradation are tightly regulated. Taken together, this review provides new insights into the regulatory role and function of cyclins in oocyte cell cycle progression.
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Affiliation(s)
- Hye Min Kim
- Department of Biological Science, Inje University, Gimhae 50834, Republic of Korea; (H.M.K.); (E.K.S.)
- Department of Research Center, Dongnam Institute of Radiological and Medical Sciences, Busan 46033, Republic of Korea; (M.K.K.); (C.G.L.)
| | - Min Kook Kang
- Department of Research Center, Dongnam Institute of Radiological and Medical Sciences, Busan 46033, Republic of Korea; (M.K.K.); (C.G.L.)
| | - Se Yoon Seong
- Institute for Digital Antiaging Healthcare, Inje University, Gimhae 50834, Republic of Korea; (S.Y.S.); (J.H.J.); (M.J.K.)
| | - Jun Hyeon Jo
- Institute for Digital Antiaging Healthcare, Inje University, Gimhae 50834, Republic of Korea; (S.Y.S.); (J.H.J.); (M.J.K.)
| | - Min Ju Kim
- Institute for Digital Antiaging Healthcare, Inje University, Gimhae 50834, Republic of Korea; (S.Y.S.); (J.H.J.); (M.J.K.)
| | - Eun Kyeong Shin
- Department of Biological Science, Inje University, Gimhae 50834, Republic of Korea; (H.M.K.); (E.K.S.)
- Department of Research Center, Dongnam Institute of Radiological and Medical Sciences, Busan 46033, Republic of Korea; (M.K.K.); (C.G.L.)
| | - Chang Geun Lee
- Department of Research Center, Dongnam Institute of Radiological and Medical Sciences, Busan 46033, Republic of Korea; (M.K.K.); (C.G.L.)
| | - Seung Jin Han
- Department of Biological Science, Inje University, Gimhae 50834, Republic of Korea; (H.M.K.); (E.K.S.)
- Institute for Digital Antiaging Healthcare, Inje University, Gimhae 50834, Republic of Korea; (S.Y.S.); (J.H.J.); (M.J.K.)
- Department of Medical Biotechnology, Inje University, Gimhae 50834, Republic of Korea
- Institute of Basic Science, Inje University, Gimhae 50834, Republic of Korea
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5
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Zou X, Yu H, Li Q. Genome-wide identification and transcriptome-based expression profiling of E2 gene family: Implication for potential roles in gonad development of Crassostrea gigas. COMPARATIVE BIOCHEMISTRY AND PHYSIOLOGY. PART D, GENOMICS & PROTEOMICS 2023; 47:101108. [PMID: 37418813 DOI: 10.1016/j.cbd.2023.101108] [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: 06/02/2023] [Revised: 06/27/2023] [Accepted: 06/27/2023] [Indexed: 07/09/2023]
Abstract
In this study, we investigated the role of E2 ubiquitin conjugating enzymes (E2) in the Pacific oyster Crassostrea gigas, with a focus on their involvement in gonad development. We identified 34 E2 genes clustered into nine subgroups and 24 subfamilies. The gene structure and intron-exon location were conserved within the same subfamily, but motif variation suggested functional diversity. Tissue transcriptome analyses revealed that most E2 genes were broadly expressed, with UBE2CL showing specific expression in the female gonad. Expression profiling of E2 genes during early embryo-larvae development stages suggested that five E2 genes were highly expressed in early embryo development, indicating their involvement in cell division processes. Furthermore, by profiling the expression of E2 genes in different gonadal developmental stages, we observed a gradual increase in expression for four genes during gametogenesis, with significantly higher expression in the female gonad at the maturation stage. Similarly, five E2 genes displayed elevated expression levels in the male gonad at the maturation stage, indicating their crucial roles in gonadal development and gametogenesis. Our study provides valuable insights into the potential functions of the E2 gene family in C. gigas, shedding light on the molecular mechanisms underlying gonad development in oysters.
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Affiliation(s)
- Xiaoyu Zou
- Key Laboratory of Mariculture (Ocean University of China), Ministry of Education, Qingdao 266003, China
| | - Hong Yu
- Key Laboratory of Mariculture (Ocean University of China), Ministry of Education, Qingdao 266003, China; Laboratory for Marine Fisheries Science and Food Production Processes, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266237, China.
| | - Qi Li
- Key Laboratory of Mariculture (Ocean University of China), Ministry of Education, Qingdao 266003, China; Laboratory for Marine Fisheries Science and Food Production Processes, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266237, China; Laboratory of Tropical Marine Germplasm Resources and Breeding Engineering, Sanya Oceanographic Institution, Ocean University of China, Sanya 572000, China
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6
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Nozawa K, Liao Z, Satouh Y, Geng T, Ikawa M, Monsivais D, Matzuk MM. Oocyte-specific Wee1-like protein kinase 2 is dispensable for fertility in mice. PLoS One 2023; 18:e0289083. [PMID: 37527245 PMCID: PMC10393137 DOI: 10.1371/journal.pone.0289083] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2023] [Accepted: 07/10/2023] [Indexed: 08/03/2023] Open
Abstract
Wee1-like protein kinase 2 (WEE2) is an oocyte-specific protein tyrosine kinase involved in the regulation of oocyte meiotic arrest in humans. As such, it has been proposed as a candidate for non-hormonal female contraception although pre-clinical models have not been reported. Therefore, we developed two novel knockout mouse models using CRISPR/Cas9 to test loss-of-function of Wee2 on female fertility. A frameshift mutation at the Wee2 translation start codon in exon 2 had no effect on litter size, litter production, or the ability of oocytes to maintain prophase I arrest. Because of the lack of a reproductive phenotype, we additionally generated a Wee2 allele with a large deletion by removing all coding exons. While there was no difference in the total number of litters produced, homozygous Wee2 female knockout mice with the larger deletion produced fewer pups than heterozygous littermates. Furthermore, there was no difference for key reproductive parameters measured in the mouse models, including ovarian weight, number of ovulated oocytes, or oocytes that underwent in vitro maturation. Therefore, as loss of Wee2 in mice shows only minor effects on overall fecundity, contraceptive development with WEE2 should consider exploiting alternative properties such as gain-of-function or protein-protein interactions, as Wee2 loss-of-function is likely complicated by biological redundancies with other proteins co-expressed in oocytes.
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Affiliation(s)
- Kaori Nozawa
- Center for Drug Discovery, Baylor College of Medicine, Houston, TX, United States of America
- Department of Pathology & Immunology, Baylor College of Medicine, Houston, TX, United States of America
| | - Zian Liao
- Center for Drug Discovery, Baylor College of Medicine, Houston, TX, United States of America
- Department of Pathology & Immunology, Baylor College of Medicine, Houston, TX, United States of America
| | - Yuhkoh Satouh
- Department of Experimental Genome Research, Research Institute for Microbial Diseases, Osaka University, Suita, Osaka, Japan
- Institute for Molecular and Cellular Regulation, Gunma University, Maebashi, Gunma, Japan
| | - Ting Geng
- Center for Drug Discovery, Baylor College of Medicine, Houston, TX, United States of America
- Department of Pathology & Immunology, Baylor College of Medicine, Houston, TX, United States of America
| | - Masahito Ikawa
- Department of Experimental Genome Research, Research Institute for Microbial Diseases, Osaka University, Suita, Osaka, Japan
- The Institute of Medical Science, The University of Tokyo, Minato-ku, Tokyo, Japan
| | - Diana Monsivais
- Center for Drug Discovery, Baylor College of Medicine, Houston, TX, United States of America
- Department of Pathology & Immunology, Baylor College of Medicine, Houston, TX, United States of America
| | - Martin M. Matzuk
- Center for Drug Discovery, Baylor College of Medicine, Houston, TX, United States of America
- Department of Pathology & Immunology, Baylor College of Medicine, Houston, TX, United States of America
- Department of Molecular and Cellular Biology, Baylor College of Medicine, Houston, TX, United States of America
- Department of Biochemistry and Molecular Pharmacology, Baylor College of Medicine, Houston, TX, United States of America
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7
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Martino NA, Picardi E, Ciani E, D’Erchia AM, Bogliolo L, Ariu F, Mastrorocco A, Temerario L, Mansi L, Palumbo V, Pesole G, Dell’Aquila ME. Cumulus Cell Transcriptome after Cumulus-Oocyte Complex Exposure to Nanomolar Cadmium in an In Vitro Animal Model of Prepubertal and Adult Age. BIOLOGY 2023; 12:biology12020249. [PMID: 36829526 PMCID: PMC9953098 DOI: 10.3390/biology12020249] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/23/2022] [Revised: 01/25/2023] [Accepted: 02/02/2023] [Indexed: 02/09/2023]
Abstract
Cadmium (Cd), a highly toxic pollutant, impairs oocyte fertilization, through oxidative damage on cumulus cells (CCs). This study analysed the transcriptomic profile of CCs of cumulus-oocyte complexes (COCs) from adult and prepubertal sheep, exposed to Cd nanomolar concentration during in vitro maturation. In both age-groups, CCs of matured oocytes underwent RNA-seq, data analysis and validation. Differentially expressed genes (DEGs) were identified in adult (n = 99 DEGs) and prepubertal (n = 18 DEGs) CCs upon Cd exposure. Transcriptomes of adult CCs clustered separately between Cd-exposed and control samples, whereas prepubertal ones did not as observed by Principal Component Analysis. The transcriptomic signature of Cd-induced CC toxicity was identified by gene annotation and literature search. Genes associated with previous studies on ovarian functions and/or Cd effects were confirmed and new genes were identified, thus implementing the knowledge on their involvement in such processes. Enrichment and validation analysis showed that, in adult CCs, Cd acted as endocrine disruptor on DEGs involved in hormone biosynthesis, cumulus expansion, regulation of cell signalling, growth and differentiation and oocyte maturation, whereas in prepubertal CCs, Cd affected DEGs involved in CC development and viability and CC-oocyte communications. In conclusion, these DEGs could be used as valuable non-invasive biomarkers for oocyte competence.
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Affiliation(s)
- Nicola Antonio Martino
- Department of Biosciences, Biotechnologies & Environment, University of Bari Aldo Moro, Via Edoardo Orabona, 70125 Bari, Italy
- Correspondence: ; Tel.: +39-0805443888
| | - Ernesto Picardi
- Department of Biosciences, Biotechnologies & Environment, University of Bari Aldo Moro, Via Edoardo Orabona, 70125 Bari, Italy
| | - Elena Ciani
- Department of Biosciences, Biotechnologies & Environment, University of Bari Aldo Moro, Via Edoardo Orabona, 70125 Bari, Italy
| | - Anna Maria D’Erchia
- Department of Biosciences, Biotechnologies & Environment, University of Bari Aldo Moro, Via Edoardo Orabona, 70125 Bari, Italy
| | - Luisa Bogliolo
- Department of Veterinary Medicine, University of Sassari, Via Vienna n. 2, 07100 Sassari, Italy
| | - Federica Ariu
- Department of Veterinary Medicine, University of Sassari, Via Vienna n. 2, 07100 Sassari, Italy
| | - Antonella Mastrorocco
- Department of Biosciences, Biotechnologies & Environment, University of Bari Aldo Moro, Via Edoardo Orabona, 70125 Bari, Italy
| | - Letizia Temerario
- Department of Biosciences, Biotechnologies & Environment, University of Bari Aldo Moro, Via Edoardo Orabona, 70125 Bari, Italy
| | - Luigi Mansi
- Department of Biosciences, Biotechnologies & Environment, University of Bari Aldo Moro, Via Edoardo Orabona, 70125 Bari, Italy
| | - Valeria Palumbo
- Department of Biosciences, Biotechnologies & Environment, University of Bari Aldo Moro, Via Edoardo Orabona, 70125 Bari, Italy
| | - Graziano Pesole
- Department of Biosciences, Biotechnologies & Environment, University of Bari Aldo Moro, Via Edoardo Orabona, 70125 Bari, Italy
| | - Maria Elena Dell’Aquila
- Department of Biosciences, Biotechnologies & Environment, University of Bari Aldo Moro, Via Edoardo Orabona, 70125 Bari, Italy
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Tesarik J, Mendoza-Tesarik R. Cyclic Adenosine Monophosphate: A Central Player in Gamete Development and Fertilization, and Possible Target for Infertility Therapies. Int J Mol Sci 2022; 23:ijms232315068. [PMID: 36499392 PMCID: PMC9736025 DOI: 10.3390/ijms232315068] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2022] [Revised: 11/27/2022] [Accepted: 11/29/2022] [Indexed: 12/04/2022] Open
Abstract
Human infertility, of both male and female origin, is often caused by the deficient response of the testis and the ovary to hormonal stimuli that govern sperm and oocyte development and fertilization. The effects of hormones and other extracellular ligands involved in these events are often mediated by G-protein-coupled receptors that employ cyclic adenosine monophosphate (cAMP) as the principal second messenger transducing the receptor-generated signal to downstream elements. This opinion article summarizes the actions of cAMP in sperm and oocyte development and fertilization, leading to therapeutic actions targeting cAMP metabolism to alleviate human male and female infertility.
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9
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Das D, Arur S. Regulation of oocyte maturation: Role of conserved ERK signaling. Mol Reprod Dev 2022; 89:353-374. [PMID: 35908193 PMCID: PMC9492652 DOI: 10.1002/mrd.23637] [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: 03/25/2022] [Revised: 07/12/2022] [Accepted: 07/18/2022] [Indexed: 11/11/2022]
Abstract
During oogenesis, oocytes arrest at meiotic prophase I to acquire competencies for resuming meiosis, fertilization, and early embryonic development. Following this arrested period, oocytes resume meiosis in response to species-specific hormones, a process known as oocyte maturation, that precedes ovulation and fertilization. Involvement of endocrine and autocrine/paracrine factors and signaling events during maintenance of prophase I arrest, and resumption of meiosis is an area of active research. Studies in vertebrate and invertebrate model organisms have delineated the molecular determinants and signaling pathways that regulate oocyte maturation. Cell cycle regulators, such as cyclin-dependent kinase (CDK1), polo-like kinase (PLK1), Wee1/Myt1 kinase, and the phosphatase CDC25 play conserved roles during meiotic resumption. Extracellular signal-regulated kinase (ERK), on the other hand, while activated during oocyte maturation in all species, regulates both species-specific, as well as conserved events among different organisms. In this review, we synthesize the general signaling mechanisms and focus on conserved and distinct functions of ERK signaling pathway during oocyte maturation in mammals, non-mammalian vertebrates, and invertebrates such as Drosophila and Caenorhabditis elegans.
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Affiliation(s)
- Debabrata Das
- Department of Genetics, UT MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Swathi Arur
- Department of Genetics, UT MD Anderson Cancer Center, Houston, TX 77030, USA
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10
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The oocyte spindle midzone pauses Cdk1 inactivation during fertilization to enable male pronuclear formation and embryo development. Cell Rep 2022; 39:110789. [PMID: 35508138 DOI: 10.1016/j.celrep.2022.110789] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2021] [Revised: 02/21/2022] [Accepted: 04/13/2022] [Indexed: 11/20/2022] Open
Abstract
Inactivation of cyclin-dependent kinase 1 (Cdk1), controlled by cyclin B1 proteolysis, orders events during mitotic exit. Here, we used a FRET biosensor to study Cdk1 activity while simultaneously monitoring anaphase II and pronuclear (PN) formation in live mouse eggs throughout fertilization. We find that Cdk1 inactivation occurs over two phases separated by a 3-h pause, the first induces anaphase II and the second induces PN formation. Although both phases require the inhibitory Cdk1 kinase Wee1B, only the first involves cyclin B1 proteolysis. Enforcing the 3-h pause is critical for providing the delay required for male PN formation and is mediated by spindle midzone-dependent sequestration of Wee1B between the first and second phases. Thus, unlike continuous Cdk1 inactivation driven by cyclin B1 proteolysis during mitotic exit, MII oocytes engineer a physiologically important pause during fertilization involving two different pathways to inactivate Cdk1, only the first of which requires proteolysis.
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11
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Ferencova I, Vaskovicova M, Drutovic D, Knoblochova L, Macurek L, Schultz RM, Solc P. CDC25B is required for the metaphase I-metaphase II transition in mouse oocytes. J Cell Sci 2022; 135:274615. [PMID: 35237831 DOI: 10.1242/jcs.252924] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2020] [Accepted: 02/16/2022] [Indexed: 11/20/2022] Open
Abstract
Mammalian oocytes are arrested at meiotic prophase I. The dual-specificity phosphatase CDC25B is essential for cyclin-dependent kinase 1 (CDK1) activation that drives resumption of meiosis. CDC25B reverses the inhibitory effect of the protein kinases WEE1/MYT1 on CDK1 activation. Cdc25b-/- female mice are infertile because oocytes cannot activate CDK1. To identify a role for CDC25B following resumption of meiosis, we restored CDK1 activation in Cdc25b-/- oocytes by inhibiting WEE1/MYT1, or expressing EGFP-CDC25A or constitutively active EGFP-CDK1 from microinjected cRNAs. Forced CDK1 activation in Cdc25b-/- oocytes allowed resumption of meiosis, but oocytes mostly arrested at metaphase I (MI) with intact spindles. Similarly, ∼1/3 of Cdc25b+/- oocytes with reduced amount of CDC25B arrest in MI. MI arrested Cdc25b-/- oocytes also display a transient decrease in CDK1 activity similar to Cdc25b+/+ oocytes during the MI-MII transition, whereas Cdc25b+/- oocytes exhibit only a partial APC/C activation and anaphase I entry. Thus, CDC25B is necessary for resumption of meiosis and the MI-MII transition.
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Affiliation(s)
- Ivana Ferencova
- Institute of Animal Physiology and Genetics of the Czech Academy of Sciences, Libechov, Czech Republic.,Department of Cell Biology, Faculty of Science, Charles University, Prague, Czech Republic
| | - Michaela Vaskovicova
- Institute of Animal Physiology and Genetics of the Czech Academy of Sciences, Libechov, Czech Republic
| | - David Drutovic
- Institute of Animal Physiology and Genetics of the Czech Academy of Sciences, Libechov, Czech Republic
| | - Lucie Knoblochova
- Institute of Animal Physiology and Genetics of the Czech Academy of Sciences, Libechov, Czech Republic
| | - Libor Macurek
- Institute of Molecular Genetics of the Czech Academy of Sciences, Prague, Czech Republic
| | - Richard M Schultz
- Department of Biology, University of Pennsylvania, Philadelphia, PA, USA.,Department of Anatomy, Physiology, and Cell Biology, School of Veterinary Medicine, University of California, Davis, CA, USA
| | - Petr Solc
- Institute of Animal Physiology and Genetics of the Czech Academy of Sciences, Libechov, Czech Republic
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12
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Ozturk S. Molecular determinants of the meiotic arrests in mammalian oocytes at different stages of maturation. Cell Cycle 2022; 21:547-571. [PMID: 35072590 PMCID: PMC8942507 DOI: 10.1080/15384101.2022.2026704] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023] Open
Abstract
Mammalian oocytes undergo two rounds of developmental arrest during maturation: at the diplotene of the first meiotic prophase and metaphase of the second meiosis. These arrests are strictly regulated by follicular cells temporally producing the secondary messengers, cAMP and cGMP, and other factors to regulate maturation promoting factor (composed of cyclin B1 and cyclin-dependent kinase 1) levels in the oocytes. Out of these normally appearing developmental arrests, permanent arrests may occur in the oocytes at germinal vesicle (GV), metaphase I (MI), or metaphase II (MII) stage. This issue may arise from absence or altered expression of the oocyte-related genes playing key roles in nuclear and cytoplasmic maturation. Additionally, the assisted reproductive technology (ART) applications such as ovarian stimulation and in vitro culture conditions both of which harbor various types of chemical agents may contribute to forming the permanent arrests. In this review, the molecular determinants of developmental and permanent arrests occurring in the mammalian oocytes are comprehensively evaluated in the light of current knowledge. As number of permanently arrested oocytes at different stages is increasing in ART centers, potential approaches for inducing permanent arrests to obtain competent oocytes are discussed.
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Affiliation(s)
- Saffet Ozturk
- Department of Histology and Embryology, Akdeniz University School of Medicine, Antalya, Turkey,CONTACT Saffet Ozturk Department of Histology and Embryology, Akdeniz University School of Medicine, Antalya07070, Turkey
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13
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Strączyńska P, Papis K, Morawiec E, Czerwiński M, Gajewski Z, Olejek A, Bednarska-Czerwińska A. Signaling mechanisms and their regulation during in vivo or in vitro maturation of mammalian oocytes. Reprod Biol Endocrinol 2022; 20:37. [PMID: 35209923 PMCID: PMC8867761 DOI: 10.1186/s12958-022-00906-5] [Citation(s) in RCA: 28] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/07/2021] [Accepted: 02/06/2022] [Indexed: 12/18/2022] Open
Abstract
In vitro fertilization (IVF) is currently one of the most effective methods of infertility treatment. An alternative to commonly used ovarian hyperstimulation can become extracorporeal maturation of oocytes (in vitro maturation; IVM). Fertilization and normal development of the embryo depends on the cytoplasmic, nuclear and genomic maturity of the oocyte. The microenvironment of the ovarian follicle and maternal signals, which mediate bidirectional communication between granulosa, cumulus and oocyte cells, influence the growth, maturation and acquisition of oocyte development capability. During oogenesis in mammals, the meiosis is inhibited in the oocyte at the prophase I of the meiotic division due to the high cAMP level. This level is maintained by the activity of C-type natriuretic peptide (CNP, NPPC) produced by granulosa cells. The CNP binds to the NPR2 receptor in cumulus cells and is responsible for the production of cyclic guanosine monophosphate (cGMP). The cGMP penetrating into the oocyte through gap junctions inhibits phosphodiesterase 3A (PDE3A), preventing cAMP hydrolysis responsible for low MPF activity. The LH surge during the reproductive cycle reduces the activity of the CNP/NPR2 complex, which results in a decrease in cGMP levels in cumulus cells and consequently in the oocyte. Reduced cGMP concentration unblocks the hydrolytic activity of PDE3A, which decreases cAMP level inside the oocyte. This leads to the activation of MPF and resumption of meiosis. The latest IVM methods called SPOM, NFSOM or CAPA IVM consist of two steps: prematuration and maturation itself. Taking into account the role of cAMP in inhibiting and then unblocking the maturation of oocytes, they have led to a significant progress in terms of the percentage of mature oocytes in vitro and the proportion of properly developed embryos in both animals and humans.
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Affiliation(s)
- Patrycja Strączyńska
- Department of Gynecology, Obstetrics and Oncological Gynecology in Bytom, Medical University of Silesia, Katowice, Poland
- Faculty of Medical Sciences in Zabrze, Medical University of Silesia, Katowice, Poland
- Gyncentrum Fertility Clinic, Katowice, Poland
| | - Krzysztof Papis
- Center for Translational Medicine, Warsaw University of Life Sciences, Warsaw, Poland.
- nOvum Fertility Clinic, Warsaw, Poland.
| | - Emilia Morawiec
- Gyncentrum Fertility Clinic, Katowice, Poland
- Department of Microbiology, Faculty of Medicine in Zabrze, University of Technology in Katowice, Katowice, Poland
| | | | - Zdzisław Gajewski
- Center for Translational Medicine, Warsaw University of Life Sciences, Warsaw, Poland
| | - Anita Olejek
- Department of Gynecology, Obstetrics and Oncological Gynecology in Bytom, Medical University of Silesia, Katowice, Poland
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14
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Jin J, Tong X, Zhang YL, Yang W, Ma Y, Ren P, Zhou F, Zhang S. Novel WEE2 compound heterozygous mutations identified in patients with fertilization failure or poor fertilization. J Assist Reprod Genet 2021; 38:2861-2869. [PMID: 34476630 PMCID: PMC8608989 DOI: 10.1007/s10815-021-02285-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2021] [Accepted: 07/20/2021] [Indexed: 12/04/2022] Open
Abstract
PURPOSE To study associations between novel WEE2 mutations and patients with fertilization failure or poor fertilization. METHODS Thirty-one Chinese patients who underwent treatment with assisted reproductive technology and suffered from repeated (at least two times) total fertilization failure (TFF) or a low fertilization rate were enrolled. Genomic DNA was extracted from patients for whole-exome sequencing. Suspicious mutations were validated by Sanger sequencing. WEE2 protein levels in oocytes from affected patients were examined by immunofluorescence. Disruptive effects of mutations on WEE2 protein stability, subcellular localization, and kinase function were analyzed through western blotting, immunofluorescence, and flow cytometry in HeLa cells. RESULTS Three of thirty-one (9.6%) enrolled patients had six compound heterozygous mutations of the WEE2 gene, and three of them were reported here for the first time (c.115_116insT, c.756_758delTGA, and c.C1459T). Oocytes from affected patients showed decreased WEE2 immunofluorescence signals. In vitro experiments showed that the mutant WEE2 gene caused reduced WEE2 protein levels or cellular compartment translocation in HeLa cells, leading to decreased levels of the phosphorylated Cdc2 protein. Compared with the wild-type WEE2 protein, the mutant WEE2 proteins were also found to have different effects on the cell cycle. CONCLUSION Three novel compound heterozygous WEE2 variants were found in patients with pronucleus formation failure. This study provides new evidence that WEE2 mutations result in loss of function, which could result in fertilization failure.
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Affiliation(s)
- Jiamin Jin
- Assisted Reproduction Unit, Department of Obstetrics and Gynecology, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, No. 3 Qingchun East Road, Jianggan District, Hangzhou, 310016, China
- Key Laboratory of Reproductive Dysfunction Management of Zhejiang Province, Hangzhou, 310016, China
| | - Xiaomei Tong
- Assisted Reproduction Unit, Department of Obstetrics and Gynecology, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, No. 3 Qingchun East Road, Jianggan District, Hangzhou, 310016, China
- Key Laboratory of Reproductive Dysfunction Management of Zhejiang Province, Hangzhou, 310016, China
| | - Yin-Li Zhang
- Assisted Reproduction Unit, Department of Obstetrics and Gynecology, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, No. 3 Qingchun East Road, Jianggan District, Hangzhou, 310016, China
- Key Laboratory of Reproductive Dysfunction Management of Zhejiang Province, Hangzhou, 310016, China
| | - Weijie Yang
- Assisted Reproduction Unit, Department of Obstetrics and Gynecology, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, No. 3 Qingchun East Road, Jianggan District, Hangzhou, 310016, China
- Key Laboratory of Reproductive Dysfunction Management of Zhejiang Province, Hangzhou, 310016, China
| | - Yerong Ma
- Assisted Reproduction Unit, Department of Obstetrics and Gynecology, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, No. 3 Qingchun East Road, Jianggan District, Hangzhou, 310016, China
- Key Laboratory of Reproductive Dysfunction Management of Zhejiang Province, Hangzhou, 310016, China
| | - Peipei Ren
- Assisted Reproduction Unit, Department of Obstetrics and Gynecology, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, No. 3 Qingchun East Road, Jianggan District, Hangzhou, 310016, China
- Key Laboratory of Reproductive Dysfunction Management of Zhejiang Province, Hangzhou, 310016, China
| | - Feng Zhou
- Assisted Reproduction Unit, Department of Obstetrics and Gynecology, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, No. 3 Qingchun East Road, Jianggan District, Hangzhou, 310016, China
- Key Laboratory of Reproductive Dysfunction Management of Zhejiang Province, Hangzhou, 310016, China
| | - Songying Zhang
- Assisted Reproduction Unit, Department of Obstetrics and Gynecology, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, No. 3 Qingchun East Road, Jianggan District, Hangzhou, 310016, China.
- Key Laboratory of Reproductive Dysfunction Management of Zhejiang Province, Hangzhou, 310016, China.
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15
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Accompaniment of Time-Lapse Parameters and Cumulus Cell RNA-Sequencing in Embryo Evaluation. Reprod Sci 2021; 29:395-409. [PMID: 34642913 DOI: 10.1007/s43032-021-00748-3] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2021] [Accepted: 09/18/2021] [Indexed: 02/04/2023]
Abstract
The aim of this study was to investigate the use of time-lapse morphokinetic parameters and cumulus cells transcriptomic profile to achieve a more accurate and non-invasive method in embryo evaluation. Two hundred embryos from 20 couples were evaluated based on morphokinetic characteristics using time-lapse. Embryos were divided into the high-quality, moderate-quality, and bad-quality groups. Non-fertilized oocytes were considered as the fourth group. T5 (time to five cells), S2 (time from three to four cells), and CC2 (time from two to three cells) were recorded. Also, the cumulus cells of the respective oocytes were divided into high-quality, moderate-quality, bad-quality, and non-fertilized groups based on the grading of the embryos. Then their transcriptomic profiles were analyzed by RNA-sequencing. Finally, the correlation between differentially expressed genes and embryo time-lapse parameters was investigated. T5 was the only timing that showed a statistically significant difference between high-quality group and other groups. RNA-sequencing results showed that 37 genes were downregulated and 106 genes were upregulated in moderate, bad-quality, and non-fertilized groups compared to high-quality group (q value < 0.05). These genes were involved in the main biological processes such as cell cycle, DNA repair, cell signaling and communication, transcription, and cell metabolism. Embryos graded in different groups showed different transcriptomic profiles in the related cumulus cells. Therefore, it seems that embryo selection using the combination of cytokinetics and cumulus cells gene expression can improve the accuracy of the embryo selection and pregnancy rate in ART clinics.
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16
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Wang J, Zheng W, Zhang S, Yan K, Jin M, Hu H, Ma Z, Gong F, Lu G, Ren Y, Lin L, Lin G, Hu L, Liu S. An increase of phosphatidylcholines in follicular fluid implies attenuation of embryo quality on day 3 post-fertilization. BMC Biol 2021; 19:200. [PMID: 34503495 PMCID: PMC8428131 DOI: 10.1186/s12915-021-01118-w] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2020] [Accepted: 08/03/2021] [Indexed: 01/02/2023] Open
Abstract
Background Although oocyte quality is the dominant factor determining embryo quality, few studies have been conducted to evaluate embryo quality based on the metabolites related to the oocyte. With quantification of the follicular fluid (FF) metabolites, in assisted reproductive technology (ART), this study sought to evaluate the embryo or oocyte quality through an informative approach. Results An evaluation model consisting of 17 features was generated to distinguish the embryo quality on day 3 post-fertilization, and phosphatidylcholines (PCs) were the key contributors to the evaluation. The model was extended to the patients under different ages and hyperstimulations, and the features were further enriched to facilitate the evaluation of the embryo quality. The metabolites were clustered through pathway analysis, leading to a hypothesis that accumulation of arachidonic acid induced by PCs might weaken embryo quality on day 3 post-fertilization. Conclusions A discriminating model with metabolic features elicited from follicular fluid was established, which enabled the evaluation of the embryo or oocyte quality even under certain clinical conditions, and the increase of PCs in follicular fluid implies the attenuation of embryo quality on day 3 post-fertilization. Supplementary Information The online version contains supplementary material available at 10.1186/s12915-021-01118-w.
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Affiliation(s)
- Ju Wang
- College of Life Sciences, University of Chinese Academy of Sciences, Beijing, 100049, China.,BGI-Shenzhen, Shenzhen, 518083, China
| | - Wei Zheng
- Clinical Research Center for Reproduction and Genetics in Hunan Province, Reproductive and Genetic Hospital of CITIC-XIANGYA, Changsha, 410008, China
| | - Shuoping Zhang
- Clinical Research Center for Reproduction and Genetics in Hunan Province, Reproductive and Genetic Hospital of CITIC-XIANGYA, Changsha, 410008, China
| | - Keqiang Yan
- College of Life Sciences, University of Chinese Academy of Sciences, Beijing, 100049, China.,BGI-Shenzhen, Shenzhen, 518083, China
| | - Miao Jin
- Clinical Research Center for Reproduction and Genetics in Hunan Province, Reproductive and Genetic Hospital of CITIC-XIANGYA, Changsha, 410008, China
| | - Huiling Hu
- Institute of Reproductive and Stem Cell Engineering, School of Basic Medical Science, Key Laboratory of National Health and Family Planning Commission, Central South University, Changsha, 410008, Hunan, China
| | - Zhen Ma
- College of Life Sciences, University of Chinese Academy of Sciences, Beijing, 100049, China.,BGI-Shenzhen, Shenzhen, 518083, China
| | - Fei Gong
- Clinical Research Center for Reproduction and Genetics in Hunan Province, Reproductive and Genetic Hospital of CITIC-XIANGYA, Changsha, 410008, China.,Institute of Reproductive and Stem Cell Engineering, School of Basic Medical Science, Key Laboratory of National Health and Family Planning Commission, Central South University, Changsha, 410008, Hunan, China
| | - Guangxiu Lu
- Clinical Research Center for Reproduction and Genetics in Hunan Province, Reproductive and Genetic Hospital of CITIC-XIANGYA, Changsha, 410008, China.,Institute of Reproductive and Stem Cell Engineering, School of Basic Medical Science, Key Laboratory of National Health and Family Planning Commission, Central South University, Changsha, 410008, Hunan, China
| | - Yan Ren
- College of Life Sciences, University of Chinese Academy of Sciences, Beijing, 100049, China.,BGI-Shenzhen, Shenzhen, 518083, China
| | - Liang Lin
- BGI-Shenzhen, Shenzhen, 518083, China
| | - Ge Lin
- Clinical Research Center for Reproduction and Genetics in Hunan Province, Reproductive and Genetic Hospital of CITIC-XIANGYA, Changsha, 410008, China.,Institute of Reproductive and Stem Cell Engineering, School of Basic Medical Science, Key Laboratory of National Health and Family Planning Commission, Central South University, Changsha, 410008, Hunan, China
| | - Liang Hu
- Clinical Research Center for Reproduction and Genetics in Hunan Province, Reproductive and Genetic Hospital of CITIC-XIANGYA, Changsha, 410008, China. .,Institute of Reproductive and Stem Cell Engineering, School of Basic Medical Science, Key Laboratory of National Health and Family Planning Commission, Central South University, Changsha, 410008, Hunan, China.
| | - Siqi Liu
- College of Life Sciences, University of Chinese Academy of Sciences, Beijing, 100049, China. .,BGI-Shenzhen, Shenzhen, 518083, China.
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17
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Abstract
Oxidative stress causes several diseases and dysfunctions in cells, including oocytes. Clearly, oxidative stress influences oocyte quality during in vitro maturation and fertilization. Here we tested the ability of coenzyme Q10 (CoQ10) to reduce reactive oxygen species (ROS) and improve mouse oocyte quality during in vitro culture. Treatment with 50 μM CoQ10 efficiently reduced ROS levels in oocytes cultured in vitro. The fertilizable form of an oocyte usually contains a cortical granule-free domain (CGFD). CoQ10 enhanced the ratio of CGFD-oocytes from 35% to 45%. However, the hardening of the zona pellucida in oocytes was not affected by CoQ10 treatment. The in vitro maturation capacity of oocytes, which was determined by the first polar body extrusion, was enhanced from 48.9% to 75.7% by the addition of CoQ10 to the culture medium. During the parthenogenesis process, the number of two-cell embryos was increased by CoQ10 from 43.5% to 67.3%. Additionally, treatment with CoQ10 increased the expression of Bcl2 and Sirt1 in cumulus cells. These results suggested that CoQ10 had a positive effect on ROS reduction, maturation rate and two-cell embryo formation in mouse oocyte culture.
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18
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Yin H, Zhang T, Wang H, Hu X, Hou X, Fang X, Yin Y, Li H, Shi L, Su YQ. Echinoderm Microtubule Associated Protein Like 1 Is Indispensable for Oocyte Spindle Assembly and Meiotic Progression in Mice. Front Cell Dev Biol 2021; 9:687522. [PMID: 34124073 PMCID: PMC8194061 DOI: 10.3389/fcell.2021.687522] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2021] [Accepted: 05/04/2021] [Indexed: 12/02/2022] Open
Abstract
Completion of the first meiosis is an essential prerequisite for producing a functionally normal egg for fertilization and embryogenesis, but the precise mechanisms governing oocyte meiotic progression remains largely unclear. Here, we report that echinoderm microtubule associated protein (EMAP) like 1 (EML1), a member of the conserved EMAP family proteins, plays a crucial role in the control of oocyte meiotic progression in the mouse. Female mice carrying an ENU-induced nonsense mutation (c.1956T > A; p.Tyr652∗) of Eml1 are infertile, and the majority of their ovulated oocytes contain abnormal spindles and misaligned chromosomes. In accordance with the mutant oocyte phenotype, we find that EML1 is colocalized with spindle microtubules during the process of normal oocyte meiotic maturation, and knockdown (KD) of EML1 by specific morpholinos in the fully grown oocytes (FGOs) disrupts the integrity of spindles, and delays meiotic progression. Moreover, EML1-KD oocytes fail to progress to metaphase II (MII) stage after extrusion of the first polar body, but enter into interphase and form a pronucleus containing decondensed chromatins. Further analysis shows that EML1-KD impairs the recruitment of γ-tubulin and pericentrin to the spindle poles, as well as the attachment of kinetochores to microtubules and the proper inactivation of spindle assembly checkpoint at metaphase I (MI). The loss of EML1 also compromises the activation of maturation promoting factor around the time of oocyte resumption and completion of the first meiosis, which, when corrected by WEE1/2 inhibitor PD166285, efficiently rescues the phenotype of oocyte delay of meiotic resumption and inability of reaching MII. Through IP- mass spectrometry analysis, we identified that EML1 interacts with nuclear distribution gene C (NUDC), a critical mitotic regulator in somatic cells, and EML1-KD disrupts the specific localization of NUDC at oocyte spindles. Taken together, these data suggest that EML1 regulates acentrosomal spindle formation and the progression of meiosis to MII in mammalian oocytes, which is likely mediated by distinct mechanisms.
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Affiliation(s)
- Hong Yin
- State Key Laboratory of Reproductive Medicine, Nanjing Medical University, Nanjing, China
| | - Teng Zhang
- State Key Laboratory of Reproductive Medicine, Nanjing Medical University, Nanjing, China
| | - Hao Wang
- State Key Laboratory of Reproductive Medicine, Nanjing Medical University, Nanjing, China
| | - Xin Hu
- State Key Laboratory of Reproductive Medicine, Nanjing Medical University, Nanjing, China
| | - Xuan Hou
- State Key Laboratory of Reproductive Medicine, Nanjing Medical University, Nanjing, China
| | - Xianbao Fang
- State Key Laboratory of Reproductive Medicine, Nanjing Medical University, Nanjing, China
| | - Yaoxue Yin
- State Key Laboratory of Reproductive Medicine, Nanjing Medical University, Nanjing, China
| | - Hui Li
- Shandong Provincial Key Laboratory of Animal Cells and Developmental Biology, School of Life Sciences, Shandong University, Qingdao, China
| | - Lanying Shi
- Shandong Provincial Key Laboratory of Animal Cells and Developmental Biology, School of Life Sciences, Shandong University, Qingdao, China
| | - You-Qiang Su
- State Key Laboratory of Reproductive Medicine, Nanjing Medical University, Nanjing, China
- Shandong Provincial Key Laboratory of Animal Cells and Developmental Biology, School of Life Sciences, Shandong University, Qingdao, China
- Women’s Hospital of Nanjing Medical University, Nanjing Maternity and Child Health Hospital, Nanjing Medical University, Nanjing, China
- Collaborative Innovation Center of Genetics and Development, Fudan University, Shanghai, China
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19
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Wołodko K, Castillo-Fernandez J, Kelsey G, Galvão A. Revisiting the Impact of Local Leptin Signaling in Folliculogenesis and Oocyte Maturation in Obese Mothers. Int J Mol Sci 2021; 22:4270. [PMID: 33924072 PMCID: PMC8074257 DOI: 10.3390/ijms22084270] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2021] [Revised: 04/13/2021] [Accepted: 04/16/2021] [Indexed: 12/28/2022] Open
Abstract
The complex nature of folliculogenesis regulation accounts for its susceptibility to maternal physiological fitness. In obese mothers, progressive expansion of adipose tissue culminates with severe hyperestrogenism and hyperleptinemia with detrimental effects for ovarian performance. Indeed, maternal obesity is associated with the establishment of ovarian leptin resistance. This review summarizes current knowledge on potential effects of impaired leptin signaling throughout folliculogenesis and oocyte developmental competence in mice and women.
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Affiliation(s)
- Karolina Wołodko
- Department of Reproductive Immunology and Pathology, Institute of Animal Reproduction and Food Research of PAS, Tuwima 10, 10-748 Olsztyn, Poland;
| | | | - Gavin Kelsey
- Epigenetics Programme, Babraham Institute, Cambridge CB22 3AT, UK; (J.C.-F.); (G.K.)
- Centre for Trophoblast Research, University of Cambridge, Cambridge CB2 3EG, UK
| | - António Galvão
- Department of Reproductive Immunology and Pathology, Institute of Animal Reproduction and Food Research of PAS, Tuwima 10, 10-748 Olsztyn, Poland;
- Epigenetics Programme, Babraham Institute, Cambridge CB22 3AT, UK; (J.C.-F.); (G.K.)
- Centre for Trophoblast Research, University of Cambridge, Cambridge CB2 3EG, UK
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20
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Characterization of Four Orphan Receptors (GPR3, GPR6, GPR12 and GPR12L) in Chickens and Ducks and Regulation of GPR12 Expression in Ovarian Granulosa Cells by Progesterone. Genes (Basel) 2021; 12:genes12040489. [PMID: 33801713 PMCID: PMC8065388 DOI: 10.3390/genes12040489] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2021] [Revised: 03/20/2021] [Accepted: 03/22/2021] [Indexed: 11/29/2022] Open
Abstract
The three structurally related orphan G protein-coupled receptors, GRP3, GPR6, and GPR12, are reported to be constitutively active and likely involved in the regulation of many physiological/pathological processes, such as neuronal outgrowth and oocyte meiotic arrest in mammals. However, the information regarding these orphan receptors in nonmammalian vertebrates is extremely limited. Here, we reported the structure, constitutive activity, and tissue expression of these receptors in two representative avian models: chickens and ducks. The cloned duck GPR3 and duck/chicken GPR6 and GPR12 are intron-less and encode receptors that show high amino acid (a.a.) sequence identities (66–88%) with their respective mammalian orthologs. Interestingly, a novel GPR12-like receptor (named GPR12L) sharing 66% a.a. identity to that in vertebrates was reported in the present study. Using dual-luciferase reporter assay and Western blot, we demonstrated that GPR3, GPR6, GPR12, and GPR12L are constitutively active and capable of stimulating the cAMP/PKA signaling pathway without ligand stimulation in birds (and zebrafish), indicating their conserved signaling property across vertebrates. RNA-seq data/qRT-PCR assays revealed that GPR6 and GPR12L expression is mainly restricted to the chicken brain, while GPR12 is highly expressed in chicken ovarian granulosa cells (GCs) and oocytes of 6 mm growing follicles and its expression in cultured GCs is upregulated by progesterone. Taken together, our data reveal the structure, function, and expression of GPR3, GPR6, GPR12, and GPR12L in birds, thus providing the first piece of evidence that GPR12 expression is upregulated by gonadal steroid (i.e., progesterone) in vertebrates.
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21
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Němeček D, Chmelikova E, Petr J, Kott T, Sedmíková M. The effect of carbon monoxide on meiotic maturation of porcine oocytes. PeerJ 2021; 9:e10636. [PMID: 33828903 PMCID: PMC7996072 DOI: 10.7717/peerj.10636] [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: 09/01/2020] [Accepted: 12/02/2020] [Indexed: 11/20/2022] Open
Abstract
Oxidative stress impairs the correct course of meiotic maturation, and it is known that the oocytes are exposed to increased oxidative stress during meiotic maturation in in vitro conditions. Thus, reduction of oxidative stress can lead to improved quality of cultured oocytes. The gasotransmitter carbon monoxide (CO) has a cytoprotective effect in somatic cells. The CO is produced in cells by the enzyme heme oxygenase (HO) and the heme oxygenase/carbon monoxide (HO/CO) pathway has been shown to have an antioxidant effect in somatic cells. It has not yet been investigated whether the CO has an antioxidant effect in oocytes as well. We assessed the level of expression of HO mRNA, using reverse transcription polymerase chain reaction. The HO protein localization was evaluated by the immunocytochemical method. The influence of CO or HO inhibition on meiotic maturation was evaluated in oocytes cultured in a culture medium containing CO donor (CORM-2 or CORM-A1) or HO inhibitor Zn-protoporphyrin IX (Zn-PP IX). Detection of reactive oxygen species (ROS) was performed using the oxidant-sensing probe 2′,7′-dichlorodihydrofluorescein diacetate. We demonstrated the expression of mRNA and proteins of both HO isoforms in porcine oocytes during meiotic maturation. The inhibition of HO enzymes by Zn-PP IX did not affect meiotic maturation. CO delivered by CORM-2 or CORM-A1 donors led to a reduction in the level of ROS in the oocytes during meiotic maturation. However, exogenously delivered CO also inhibited meiotic maturation, especially at higher concentrations. In summary, the CO signaling molecule has antioxidant properties in porcine oocytes and may also be involved in the regulation of meiotic maturation.
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Affiliation(s)
- David Němeček
- Department of Veterinary Sciences, Czech University of Life Sciences, Prague, Czech Republic
| | - Eva Chmelikova
- Department of Veterinary Sciences, Czech University of Life Sciences, Prague, Czech Republic
| | - Jaroslav Petr
- Institute of Animal Science, Uhřiněves, Czech Republic
| | - Tomas Kott
- Institute of Animal Science, Uhřiněves, Czech Republic
| | - Markéta Sedmíková
- Department of Veterinary Sciences, Czech University of Life Sciences, Prague, Czech Republic
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22
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Biswas L, Tyc K, El Yakoubi W, Morgan K, Xing J, Schindler K. Meiosis interrupted: the genetics of female infertility via meiotic failure. Reproduction 2021; 161:R13-R35. [PMID: 33170803 DOI: 10.1530/rep-20-0422] [Citation(s) in RCA: 39] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2020] [Accepted: 11/10/2020] [Indexed: 12/14/2022]
Abstract
Idiopathic or 'unexplained' infertility represents as many as 30% of infertility cases worldwide. Conception, implantation, and term delivery of developmentally healthy infants require chromosomally normal (euploid) eggs and sperm. The crux of euploid egg production is error-free meiosis. Pathologic genetic variants dysregulate meiotic processes that occur during prophase I, meiotic resumption, chromosome segregation, and in cell cycle regulation. This dysregulation can result in chromosomally abnormal (aneuploid) eggs. In turn, egg aneuploidy leads to a broad range of clinical infertility phenotypes, including primary ovarian insufficiency and early menopause, egg fertilization failure and embryonic developmental arrest, or recurrent pregnancy loss. Therefore, maternal genetic variants are emerging as infertility biomarkers, which could allow informed reproductive decision-making. Here, we select and deeply examine human genetic variants that likely cause dysregulation of critical meiotic processes in 14 female infertility-associated genes: SYCP3, SYCE1, TRIP13, PSMC3IP, DMC1, MCM8, MCM9, STAG3, PATL2, TUBB8, CEP120, AURKB, AURKC, andWEE2. We discuss the function of each gene in meiosis, explore genotype-phenotype relationships, and delineate the frequencies of infertility-associated variants.
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Affiliation(s)
- Leelabati Biswas
- Department of Genetics, Rutgers, The State University of New Jersey, Piscataway, New Jersey, USA.,Human Genetics Institute of New Jersey, Rutgers, The State University of New Jersey, Piscataway, New Jersey, USA
| | - Katarzyna Tyc
- Department of Genetics, Rutgers, The State University of New Jersey, Piscataway, New Jersey, USA
| | - Warif El Yakoubi
- Department of Genetics, Rutgers, The State University of New Jersey, Piscataway, New Jersey, USA
| | - Katie Morgan
- Department of Genetics, Rutgers, The State University of New Jersey, Piscataway, New Jersey, USA
| | - Jinchuan Xing
- Department of Genetics, Rutgers, The State University of New Jersey, Piscataway, New Jersey, USA.,Human Genetics Institute of New Jersey, Rutgers, The State University of New Jersey, Piscataway, New Jersey, USA
| | - Karen Schindler
- Department of Genetics, Rutgers, The State University of New Jersey, Piscataway, New Jersey, USA.,Human Genetics Institute of New Jersey, Rutgers, The State University of New Jersey, Piscataway, New Jersey, USA
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23
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Tian Y, Wang G, Wang J, Mu X, Chen H, Song X, Bai X. Novel compound heterozygous mutation in WEE2 is associated with fertilization failure: case report of an infertile woman and literature review. BMC WOMENS HEALTH 2020; 20:246. [PMID: 33148236 PMCID: PMC7643268 DOI: 10.1186/s12905-020-01111-5] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/05/2020] [Accepted: 10/26/2020] [Indexed: 02/06/2023]
Abstract
BACKGROUND Fertilization failure after intracytoplasmic sperm injection continues to affect couples and the etiology is not well-understood. CASE PRESENTATION We characterized a couple with 2-year history of primary unexplained infertility. Three different assisted reproduction attempts (IVF + rescue ICSI, ICSI and ICSI-AOA) showed repeated fertilization failure for MII oocyte retrieval after controlled ovarian hyperstimulation. After whole-exome sequencing and sanger sequencing of the couple and their family members, variant pathogenicity was assessed using SIFT, PolyPhen2, Mutation Taster, and Human Splicing Finder software. We identified novel compound heterozygous mutations, c.1535 + 3A > G and c.946C > T (p. Leu316Phe), in WEE2 in the female proband. Trios analysis of the variations revealed an autosomal recessive pattern. c.1535 + 3A > G in WEE2 was predicted to break the wild-type donor site and affect splicing, and the missense mutation c.946C > T (p. Leu316Phe) of WEE2 was predicted to be pathogenic. CONCLUSION A novel compound heterozygous mutation in WEE2 was identified in an infertile female who experienced repeated fertilization failure even after ICSI-AOA. These novel mutations in WEE2 provided genetic evidence for fertilization failure.
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Affiliation(s)
- Ye Tian
- Reproductive Medicine Center, Department of Gynecology and Obstetrics, Tianjin Medical University General Hospital, 154, Anshan Road, Heping District, Tianjin, 300052, China
| | - Guojie Wang
- Reproductive Medicine Center, Department of Gynecology and Obstetrics, Tianjin Medical University General Hospital, 154, Anshan Road, Heping District, Tianjin, 300052, China
| | - Jin Wang
- Reproductive Medicine Center, Department of Gynecology and Obstetrics, Tianjin Medical University General Hospital, 154, Anshan Road, Heping District, Tianjin, 300052, China
| | - Xiaohuan Mu
- Reproductive Medicine Center, Department of Gynecology and Obstetrics, Tianjin Medical University General Hospital, 154, Anshan Road, Heping District, Tianjin, 300052, China
| | - Haixia Chen
- Reproductive Medicine Center, Department of Gynecology and Obstetrics, Tianjin Medical University General Hospital, 154, Anshan Road, Heping District, Tianjin, 300052, China
| | - Xueru Song
- Reproductive Medicine Center, Department of Gynecology and Obstetrics, Tianjin Medical University General Hospital, 154, Anshan Road, Heping District, Tianjin, 300052, China
| | - Xiaohong Bai
- Reproductive Medicine Center, Department of Gynecology and Obstetrics, Tianjin Medical University General Hospital, 154, Anshan Road, Heping District, Tianjin, 300052, China.
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24
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Chotiner JY, Wolgemuth DJ, Wang PJ. Functions of cyclins and CDKs in mammalian gametogenesis†. Biol Reprod 2020; 101:591-601. [PMID: 31078132 DOI: 10.1093/biolre/ioz070] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2019] [Revised: 04/10/2019] [Accepted: 04/17/2019] [Indexed: 12/13/2022] Open
Abstract
Cyclins and cyclin-dependent kinases (CDKs) are key regulators of the cell cycle. Most of our understanding of their functions has been obtained from studies in single-cell organisms and mitotically proliferating cultured cells. In mammals, there are more than 20 cyclins and 20 CDKs. Although genetic ablation studies in mice have shown that most of these factors are dispensable for viability and fertility, uncovering their functional redundancy, CCNA2, CCNB1, and CDK1 are essential for embryonic development. Cyclin/CDK complexes are known to regulate both mitotic and meiotic cell cycles. While some mechanisms are common to both types of cell divisions, meiosis has unique characteristics and requirements. During meiosis, DNA replication is followed by two successive rounds of cell division. In addition, mammalian germ cells experience a prolonged prophase I in males or a long period of arrest in prophase I in females. Therefore, cyclins and CDKs may have functions in meiosis distinct from their mitotic functions and indeed, meiosis-specific cyclins, CCNA1 and CCNB3, have been identified. Here, we describe recent advances in the field of cyclins and CDKs with a focus on meiosis and early embryogenesis.
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Affiliation(s)
- Jessica Y Chotiner
- Department of Biomedical Sciences, University of Pennsylvania School of Veterinary Medicine, Philadelphia, Pennsylvania, USA
- Cell and Molecular Biology Graduate Program, University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - Debra J Wolgemuth
- Department of Genetics & Development, Columbia University Medical Center, New York, New York, USA
| | - P Jeremy Wang
- Department of Biomedical Sciences, University of Pennsylvania School of Veterinary Medicine, Philadelphia, Pennsylvania, USA
- Cell and Molecular Biology Graduate Program, University of Pennsylvania, Philadelphia, Pennsylvania, USA
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25
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Wu D, Dean J. EXOSC10 sculpts the transcriptome during the growth-to-maturation transition in mouse oocytes. Nucleic Acids Res 2020; 48:5349-5365. [PMID: 32313933 DOI: 10.1093/nar/gkaa249] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2019] [Revised: 03/28/2020] [Accepted: 04/01/2020] [Indexed: 12/21/2022] Open
Abstract
Growing mammalian oocytes accumulate substantial amounts of RNA, most of which is degraded during subsequent meiotic maturation. The growth-to-maturation transition begins with germinal vesicle or nuclear envelope breakdown (GVBD) and is critical for oocyte quality and early development. The molecular machinery responsible for the oocyte transcriptome transition remains unclear. Here, we report that an exosome-associated RNase, EXOSC10, sculpts the transcriptome to facilitate the growth-to-maturation transition of mouse oocytes. We establish an oocyte-specific conditional knockout of Exosc10 in mice using CRISPR/Cas9 which results in female subfertility due to delayed GVBD. By performing multiple single oocyte RNA-seq, we document dysregulation of several types of RNA, and the mRNAs that encode proteins important for endomembrane trafficking and meiotic cell cycle. As expected, EXOSC10-depleted oocytes have impaired endomembrane components including endosomes, lysosomes, endoplasmic reticulum and Golgi. In addition, CDK1 fails to activate, possibly due to persistent WEE1 activity, which blocks lamina phosphorylation and disassembly. Moreover, we identified rRNA processing defects that cause higher percentage of developmentally incompetent oocytes after EXOSC10 depletion. Collectively, we propose that EXOSC10 promotes normal growth-to-maturation transition in mouse oocytes by sculpting the transcriptome to degrade RNAs encoding growth-phase factors and, thus, support the maturation phase of oogenesis.
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Affiliation(s)
- Di Wu
- Laboratory of Cellular and Developmental Biology, NIDDK, National Institutes of Health, Bethesda, MD 20892, USA
| | - Jurrien Dean
- Laboratory of Cellular and Developmental Biology, NIDDK, National Institutes of Health, Bethesda, MD 20892, USA
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26
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Yu BY, Subudeng G, Du CG, Liu ZH, Zhao YF, Namei E, Bai Y, Yang BX, Li HJ. Plasminogen activator, tissue type regulates germinal vesicle breakdown and cumulus expansion of bovine cumulus-oocyte complex in vitro†. Biol Reprod 2020; 100:1473-1481. [PMID: 30939202 DOI: 10.1093/biolre/ioz049] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2018] [Revised: 02/02/2019] [Accepted: 03/30/2019] [Indexed: 12/13/2022] Open
Abstract
Plasminogen activator, tissue type (PLAT) and its inhibitor serpin family E member 1 (SERPINE1) cooperatively regulate PLAT activity in various reproductive processes. However, it is unknown whether this includes bovine oocyte maturation. We addressed this question in the present study by evaluating PLAT and SERPINE1 protein localization in immature cumulus-oocyte complexes (COCs), as well as PLAT mRNA and protein expression in cultured COCs after 0, 8, 16, and 24 h of in vitro maturation (IVM). We also examined the effects of PLAT and SERPINE1 on germinal vesicle breakdown (GVBD) and oocyte cyclic 3' 5' adenosine monophosphate (cAMP) levels, cumulus expansion index, and expansion-related gene expression in oocytes derived from bovine COCs cultured for 4, 8, and 12 h and in COCs cultured for 16 h. Both PLAT and SERPINE1 localized in cumulus cells but only the latter was detected in oocytes. PLAT and SERPINE1 transcript levels increased during IVM; however, from 8 to 16 h, the levels of PLAT remained stable whereas those of SERPINE1 increased, resulting in a decline in PLAT concentration. Additionally, PLAT delayed GVBD, increased oocyte cAMP levels, and blocked cumulus expansion and associated gene expression, which was reversed by SERPINE1 supplemented. Thus, PLAT delays bovine oocyte GVBD by enhancing oocyte cAMP levels during the first 8 h of IVM; suppression of PLAT activity via accumulation of SERPINE1 in COCs results in cumulus expansion from 8 to 16 h of IVM. These findings provide novel insights into the molecular mechanisms underlying in vitro bovine oocyte maturation.
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Affiliation(s)
- Bo-Yang Yu
- College of Veterinary Medicine, Inner Mongolia Agricultural University, Hohhot, China.,Basic Medical College, Inner Mongolia Medical University, Hohhot, China
| | - Gerile Subudeng
- College of Veterinary Medicine, Inner Mongolia Agricultural University, Hohhot, China
| | - Chen-Guang Du
- College of Veterinary Medicine, Inner Mongolia Agricultural University, Hohhot, China
| | - Zhi-Hong Liu
- College of Animal Science, Inner Mongolia Agricultural University, Hohhot, China
| | - Yu-Fen Zhao
- College of Veterinary Medicine, Inner Mongolia Agricultural University, Hohhot, China
| | - Erge Namei
- College of Veterinary Medicine, Inner Mongolia Agricultural University, Hohhot, China
| | - Yue Bai
- College of Veterinary Medicine, Inner Mongolia Agricultural University, Hohhot, China
| | - Bing-Xue Yang
- College of Veterinary Medicine, Inner Mongolia Agricultural University, Hohhot, China
| | - Hai-Jun Li
- College of Veterinary Medicine, Inner Mongolia Agricultural University, Hohhot, China
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27
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Hanna CB, Mudaliar D, John K, Allen CL, Sun L, Hawkinson JE, Schönbrunn E, Georg GI, Jensen JT. Development of WEE2 kinase inhibitors as novel non-hormonal female contraceptives that target meiosis†. Biol Reprod 2020; 103:368-377. [PMID: 32667031 PMCID: PMC7401407 DOI: 10.1093/biolre/ioaa097] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2020] [Revised: 05/26/2020] [Indexed: 11/24/2022] Open
Abstract
WEE2 oocyte meiosis inhibiting kinase is a well-conserved oocyte specific kinase with a dual regulatory role during meiosis. Active WEE2 maintains immature, germinal vesicle stage oocytes in prophase I arrest prior to the luteinizing hormone surge and facilitates exit from metaphase II arrest at fertilization. Spontaneous mutations at the WEE2 gene locus in women have been linked to total fertilization failure indicating that selective inhibitors to this kinase could function as non-hormonal contraceptives. Employing co-crystallization with WEE1 G2 checkpoint kinase inhibitors, we revealed the structural basis of action across WEE kinases and determined type I inhibitors were not selective to WEE2 over WEE1. In response, we performed in silico screening by FTMap/FTSite and Schrodinger SiteMap analysis to identify potential allosteric sites, then used an allosterically biased activity assay to conduct high-throughput screening of a 26 000 compound library containing scaffolds of known allosteric inhibitors. Resulting hits were validated and a selective inhibitor that binds full-length WEE2 was identified, designated GPHR-00336382, along with a fragment-like inhibitor that binds the kinase domain, GPHR-00355672. Additionally, we present an in vitro testing workflow to evaluate biological activity of candidate WEE2 inhibitors including; (1) enzyme-linked immunosorbent assays measuring WEE2 phosphorylation activity of cyclin dependent kinase 1 (CDK1; also known as cell division cycle 2 kinase, CDC2), (2) in vitro fertilization of bovine ova to determine inhibition of metaphase II exit, and (3) cell-proliferation assays to look for off-target effects against WEE1 in somatic (mitotic) cells.
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Affiliation(s)
- Carol B Hanna
- Oregon National Primate Research Center, Beaverton, Division of Reproductive & Developmental Sciences OR, USA
- Correspondence: Oregon Health & Science University, 505 NW 185th Ave, Beaverton, OR 97006, USA. Tel: +1-503-346-5000; Fax: +1-503-346-5585; E-mail:
| | - Deepti Mudaliar
- University of Minnesota, Department of Obstetrics & Gynecology, Minneapolis, MN, USA
| | - Kristen John
- University of Minnesota, Department of Obstetrics & Gynecology, Minneapolis, MN, USA
| | - C Leigh Allen
- University of Minnesota, Department of Obstetrics & Gynecology, Minneapolis, MN, USA
| | - Luxin Sun
- Moffitt Cancer Center, Drug Discovery Department, Tampa, FL, USA
| | - Jon E Hawkinson
- University of Minnesota, Department of Obstetrics & Gynecology, Minneapolis, MN, USA
| | - Ernst Schönbrunn
- Moffitt Cancer Center, Drug Discovery Department, Tampa, FL, USA
| | - Gunda I Georg
- University of Minnesota, Department of Obstetrics & Gynecology, Minneapolis, MN, USA
| | - Jeffrey T Jensen
- Oregon National Primate Research Center, Beaverton, Division of Reproductive & Developmental Sciences OR, USA
- Oregon Health & Science University, Portland, OR, USA
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28
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Jessus C, Munro C, Houliston E. Managing the Oocyte Meiotic Arrest-Lessons from Frogs and Jellyfish. Cells 2020; 9:E1150. [PMID: 32392797 PMCID: PMC7290932 DOI: 10.3390/cells9051150] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2020] [Revised: 05/03/2020] [Accepted: 05/05/2020] [Indexed: 12/11/2022] Open
Abstract
During oocyte development, meiosis arrests in prophase of the first division for a remarkably prolonged period firstly during oocyte growth, and then when awaiting the appropriate hormonal signals for egg release. This prophase arrest is finally unlocked when locally produced maturation initiation hormones (MIHs) trigger entry into M-phase. Here, we assess the current knowledge of the successive cellular and molecular mechanisms responsible for keeping meiotic progression on hold. We focus on two model organisms, the amphibian Xenopus laevis, and the hydrozoan jellyfish Clytia hemisphaerica. Conserved mechanisms govern the initial meiotic programme of the oocyte prior to oocyte growth and also, much later, the onset of mitotic divisions, via activation of two key kinase systems: Cdk1-Cyclin B/Gwl (MPF) for M-phase activation and Mos-MAPkinase to orchestrate polar body formation and cytostatic (CSF) arrest. In contrast, maintenance of the prophase state of the fully-grown oocyte is assured by highly specific mechanisms, reflecting enormous variation between species in MIHs, MIH receptors and their immediate downstream signalling response. Convergence of multiple signalling pathway components to promote MPF activation in some oocytes, including Xenopus, is likely a heritage of the complex evolutionary history of spawning regulation, but also helps ensure a robust and reliable mechanism for gamete production.
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Affiliation(s)
- Catherine Jessus
- Laboratoire de Biologie du Développement - Institut de Biologie Paris Seine, LBD - IBPS, Sorbonne Université, CNRS, F-75005 Paris, France
| | - Catriona Munro
- Laboratoire de Biologie du Développement de Villefranche-sur-mer (LBDV), Sorbonne Université, CNRS, 06230 Villefranche-sur-mer, France;
- Inserm, Center for Interdisciplinary Research in Biology, Collège de France, PSL Research University, CNRS, 75005 Paris, France
| | - Evelyn Houliston
- Laboratoire de Biologie du Développement de Villefranche-sur-mer (LBDV), Sorbonne Université, CNRS, 06230 Villefranche-sur-mer, France;
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29
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Bai GY, Choe MH, Kim JS, Oh JS. Mis12 controls cyclin B1 stabilization via Cdc14B-mediated APC/C Cdh1 regulation during meiotic G2/M transition in mouse oocytes. Development 2020; 147:147/8/dev185322. [PMID: 32341029 DOI: 10.1242/dev.185322] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2019] [Accepted: 03/18/2020] [Indexed: 01/02/2023]
Abstract
Mammalian oocytes are arrested at G2/prophase of the first meiosis. After a hormone surge, oocytes resume meiosis, undergoing germinal vesicle breakdown (GVBD). This process is regulated by Cdk1/cyclin B1. Here, we report that Mis12 is required for G2/M transition by regulating cyclin B1 accumulation via Cdc14B-mediated APC/CCdh1 regulation, but is not essential for spindle and chromosome dynamics during meiotic maturation. Depletion of Mis12 severely compromised GVBD by impairing cyclin B1 accumulation. Importantly, impaired GVBD after Mis12 depletion was rescued not only by overexpressing cyclin B1 but also by depleting Cdc14B or Cdh1. Notably, oocytes rescued by cyclin B1 overexpression exhibited normal spindle and chromosome organization with intact kinetochore-microtubule attachments. In addition, after being rescued by cyclin B1 overexpression, Mis12-depleted oocytes normally extruded polar bodies. Moreover, Mis12-depleted oocytes formed pronuclear structures after fertilization but failed to develop beyond zygotes. Interestingly, Mis12 was localized in the cytoplasm and spindle poles in oocytes, in contrast to kinetochore localization in somatic cells. Therefore, our results demonstrate that Mis12 is required for meiotic G2/M transition but is dispensable for meiotic progression through meiosis I and II.
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Affiliation(s)
- Guang-Yu Bai
- Department of Integrative Biotechnology, Sungkyunkwan University, Suwon, 16419, Korea.,Biomedical Institute for Convergence at SKKU (BICS), Sungkyunkwan University, Suwon, 16419, Korea
| | - Min Ho Choe
- Division of Radiation Biomedical Research, Korea Institute of Radiological and Medical Sciences, Seoul, 01812, Korea
| | - Jae-Sung Kim
- Division of Radiation Biomedical Research, Korea Institute of Radiological and Medical Sciences, Seoul, 01812, Korea
| | - Jeong Su Oh
- Department of Integrative Biotechnology, Sungkyunkwan University, Suwon, 16419, Korea .,Biomedical Institute for Convergence at SKKU (BICS), Sungkyunkwan University, Suwon, 16419, Korea
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30
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Peng RR, Wang LL, Gao WY, Zhu FY, Hu F, Zeng WT, Shi LY, Chen XC, Cai JY, Zhang D, Xia ZR, Yang ZX. The 5.8S pre-rRNA maturation factor, M-phase phosphoprotein 6, is a female fertility factor required for oocyte quality and meiosis. Cell Prolif 2020; 53:e12769. [PMID: 32003502 PMCID: PMC7106954 DOI: 10.1111/cpr.12769] [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: 09/07/2019] [Revised: 12/07/2019] [Accepted: 01/04/2020] [Indexed: 11/30/2022] Open
Abstract
Objectives M‐phase phosphoprotein 6 (MPP6) is important for 5.8S pre‐rRNA maturation in somatic cells and was screened as a female fertility factor. However, whether MPP6 functions in oocyte meiosis and fertility is not yet known. We aimed to address this. Materials and Methods Mouse oocytes with surrounded nucleus (SN) or non‐surrounded nucleus (NSN) were used for all experiments. Peptide nanoparticle‐mediated antibody transfection was used to deplete MPP6. Immunofluorescence staining, immunohistochemistry and live tracker staining were used to examine MPP6 localization and characterize phenotypes after control or MPP6 depletion. High‐fidelity PCR and fluorescence in situ hybridization (FISH) were used to examine the localization and level of 5.8S rRNAs. Western blot was used to examine the protein level. MPP6‐EGFP mRNA microinjection was used to do the rescue. Results MPP6 was enriched within ovaries and oocytes. MPP6 depletion significantly impeded oocyte meiosis. MPP6 depletion increased 5.8S pre‐rRNA. The mRNA levels of MPP6 and 5.8S rRNA decreased within ageing oocytes, and MPP6 mRNA injection partially increased 5.8S rRNA maturation and improved oocyte quality. Conclusions MPP6 is required for 5.8S rRNA maturation, meiosis and quality control in mouse oocytes, and MPP6 level might be a marker for oocyte quality.
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Affiliation(s)
- Rui-Rui Peng
- Center for Reproductive Medicine, Shandong Provincial Hospital Affiliated to Shandong University, Jinan, China.,State Key Lab of Reproductive Medicine, Nanjing Medical University, Nanjing, China
| | - Li-Li Wang
- State Key Lab of Reproductive Medicine, Nanjing Medical University, Nanjing, China
| | - Wen-Yi Gao
- State Key Lab of Reproductive Medicine, Nanjing Medical University, Nanjing, China
| | - Feng-Yu Zhu
- State Key Lab of Reproductive Medicine, Nanjing Medical University, Nanjing, China
| | - Fan Hu
- State Key Lab of Reproductive Medicine, Nanjing Medical University, Nanjing, China
| | - Wen-Tao Zeng
- Animal Core Facility, Nanjing Medical University, Nanjing, China
| | - Li-Ya Shi
- The Second Affiliated Hospital, Nanjing Medical University, Nanjing, China
| | - Xi-Chen Chen
- Analysis and Test Center, Nanjing Medical University, Nanjing, China
| | - Jing-Yang Cai
- State Key Lab of Reproductive Medicine, Nanjing Medical University, Nanjing, China
| | - Dong Zhang
- State Key Lab of Reproductive Medicine, Nanjing Medical University, Nanjing, China.,Animal Core Facility, Nanjing Medical University, Nanjing, China
| | - Zheng-Rong Xia
- Analysis and Test Center, Nanjing Medical University, Nanjing, China
| | - Zhi-Xia Yang
- State Key Lab of Reproductive Medicine, Nanjing Medical University, Nanjing, China
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31
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Hanna CB, Yao S, Martin M, Schönbrunn E, Georg GI, Jensen JT, Cuellar RAD. Identification and Screening of Selective WEE2 Inhibitors to Develop Non-Hormonal Contraceptives that Specifically Target Meiosis. ChemistrySelect 2019; 4:13363-13369. [PMID: 32190728 PMCID: PMC7079731 DOI: 10.1002/slct.201903696] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2019] [Accepted: 11/22/2019] [Indexed: 12/17/2022]
Abstract
We used a progressive elimination strategy to identify oocyte-specific WEE2 kinase inhibitors for potential non-hormonal contraceptives that target meiosis. Beginning with an in-house library of over 300,000 compounds, virtual high throughput screening identified 57 WEE2 inhibitors with preferential predicted binding over the somatic variant WEE1. Seven compounds were further evaluated in vitro by enzyme-linked immunosorbent assay to measure biochemical inhibition on WEE1 and WEE2 phosphorylation of CDK1. To assess specificity, we evaluated WEE2-mediated inhibition of meiosis using in vitro oocyte fertilization, and WEE1-mediated inhibition of mitosis using a somatic cell proliferation assay. Our results from these assays identified three candidates for further development: 6-(2,6-dichlorophenyl)-2-((4-(2-(diethylamino)ethoxy) phenyl)amino)-8-methylpyrido[2,3-d]pyrimidin-7(8H)-one (2), 6-(2,6-dichlorophenyl)-8-methyl-2-((4-morpholinophenyl) amino)pyrido[2,3-d]pyrimidin-7(8H)-one (12), and 3-((6-(2,6-dichlorophenyl)-8-methyl-7-oxo-7,8-dihydropyrido[2,3-d]pyrimidin-2-yl)amino)benzoic acid (16).
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Affiliation(s)
- Carol B Hanna
- Division of Reproductive & Developmental Sciences, Oregon National Primate Research Center, 505 Northwest 185 Avenue, Beaverton, OR 97006 (USA)
| | - Shan Yao
- Division of Reproductive & Developmental Sciences, Oregon National Primate Research Center, 505 Northwest 185 Avenue, Beaverton, OR 97006 (USA)
| | - Mat Martin
- Drug Discovery Department, H. Lee Moffitt Cancer Center & Research Institute, 12902 USF Magnolia Drive, Tampa, FL 33612 (USA)
| | - Ernst Schönbrunn
- Drug Discovery Department, H. Lee Moffitt Cancer Center & Research Institute, 12902 USF Magnolia Drive, Tampa, FL 33612 (USA)
| | - Gunda I Georg
- Department of Medicinal Chemistry and Institute for Therapeutics Discovery and Development, University of Minnesota, 717 Delaware Street Southeast, Minneapolis, MN 55414 (USA)
| | - Jeffrey T Jensen
- Division of Reproductive & Developmental Sciences, Oregon National Primate Research Center, 505 Northwest 185 Avenue, Beaverton, OR 97006 (USA)
- Department of Obstetrics & Gynecology, Oregon Health & Science University, 3181 Southwest Sam Jackson Park Road, Portland, OR 97239 (USA)
| | - Rebecca A D Cuellar
- Department of Medicinal Chemistry and Institute for Therapeutics Discovery and Development, University of Minnesota, 717 Delaware Street Southeast, Minneapolis, MN 55414 (USA)
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32
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Eisa AA, De S, Detwiler A, Gilker E, Ignatious AC, Vijayaraghavan S, Kline D. YWHA (14-3-3) protein isoforms and their interactions with CDC25B phosphatase in mouse oogenesis and oocyte maturation. BMC DEVELOPMENTAL BIOLOGY 2019; 19:20. [PMID: 31640562 PMCID: PMC6805688 DOI: 10.1186/s12861-019-0200-1] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/28/2019] [Accepted: 09/13/2019] [Indexed: 12/21/2022]
Abstract
Background Immature mammalian oocytes are held arrested at prophase I of meiosis by an inhibitory phosphorylation of cyclin-dependent kinase 1 (CDK1). Release from this meiotic arrest and germinal vesicle breakdown is dependent on dephosphorylation of CDK1 by the protein, cell cycle division 25B (CDC25B). Evidence suggests that phosphorylated CDC25B is bound to YWHA (14-3-3) proteins in the cytoplasm of immature oocytes and is thus maintained in an inactive form. The importance of YWHA in meiosis demands additional studies. Results Messenger RNA for multiple isoforms of the YWHA protein family was detected in mouse oocytes and eggs. All seven mammalian YWHA isoforms previously reported to be expressed in mouse oocytes, were found to interact with CDC25B as evidenced by in situ proximity ligation assays. Interaction of YWHAH with CDC25B was indicated by Förster Resonance Energy Transfer (FRET) microscopy. Intracytoplasmic microinjection of oocytes with R18, a known, synthetic, non-isoform-specific, YWHA-blocking peptide promoted germinal vesicle breakdown. This suggests that inhibiting the interactions between YWHA proteins and their binding partners releases the oocyte from meiotic arrest. Microinjection of isoform-specific, translation-blocking morpholino oligonucleotides to knockdown or downregulate YWHA protein synthesis in oocytes suggested a role for a specific YWHA isoform in maintaining the meiotic arrest. More definitively however, and in contrast to the knockdown experiments, oocyte-specific and global deletion of two isoforms of YWHA, YWHAH (14-3-3 eta) or YWHAE (14-3-3 epsilon) indicated that the complete absence of either or both isoforms does not alter oocyte development and release from the meiotic prophase I arrest. Conclusions Multiple isoforms of the YWHA protein are expressed in mouse oocytes and eggs and interact with the cell cycle protein CDC25B, but YWHAH and YWHAE isoforms are not essential for normal mouse oocyte maturation, fertilization and early embryonic development.
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Affiliation(s)
- Alaa A Eisa
- School of Biomedical Sciences, Kent State University, Kent, OH, 22422, USA
| | - Santanu De
- Department of Biological Sciences, Nova Southeastern University, Fort Lauderdale, FL, 33314, USA
| | - Ariana Detwiler
- Department of Environmental and Occupational Health, University of Pittsburgh Graduate School of Public Health, UPMC Hillman Cancer Center, Pittsburgh, PA, 15213, USA
| | - Eva Gilker
- Department of Physiology and Biophysics, Case Western Reserve University School of Medicine, Cleveland, OH, 44106, USA
| | | | | | - Douglas Kline
- Department of Biological Sciences, Kent State University, Kent, OH, 44242, USA.
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Zhou C, Hancock JL, Khanna KK, Homer HA. First meiotic anaphase requires Cep55-dependent inhibitory cyclin-dependent kinase 1 phosphorylation. J Cell Sci 2019; 132:jcs.233379. [PMID: 31427428 DOI: 10.1242/jcs.233379] [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: 04/18/2019] [Accepted: 08/09/2019] [Indexed: 12/28/2022] Open
Abstract
During mitosis, anaphase is triggered by anaphase-promoting complex (APC)-mediated destruction of securin and cyclin B1, which leads to inactivation of cyclin-dependent kinase 1 (Cdk1). By regulating APC activity, the mitotic spindle assembly checkpoint (SAC) therefore has robust control over anaphase timing to prevent chromosome mis-segregation. Mammalian oocytes are prone to aneuploidy, the reasons for which remain obscure. In mitosis, Cep55 is required post-anaphase for the final steps of cytokinesis. We found that Cep55-depleted mouse oocytes progress normally through early meiosis I, but that anaphase I fails as a result of persistent Cdk1 activity. Unexpectedly, Cdk1 inactivation was compromised following Cep55 depletion, despite on-time SAC silencing and intact APC-mediated proteolysis. We found that impaired Cdk1 inactivation was caused by inadequate inhibitory Cdk1 phosphorylation consequent upon failure to suppress Cdc25 phosphatase, identifying a proteolysis-independent step necessary for anaphase I. Thus, the SAC in oocytes does not exert exclusive control over anaphase I initiation, providing new insight into vulnerability to error.
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Affiliation(s)
- Chenxi Zhou
- The Christopher Chen Oocyte Biology Research Laboratory, UQ Centre for Clinical Research, The University of Queensland, Herston 4029, QLD, Australia
| | - Janelle L Hancock
- Signal Transduction Laboratory, QIMR Berghofer Medical Research Institute, Herston, QLD, Australia
| | - Kum Kum Khanna
- Signal Transduction Laboratory, QIMR Berghofer Medical Research Institute, Herston, QLD, Australia
| | - Hayden A Homer
- The Christopher Chen Oocyte Biology Research Laboratory, UQ Centre for Clinical Research, The University of Queensland, Herston 4029, QLD, Australia
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Li Y, Guo L, Li H, Li J, Dong F, Yi Z, Ouyang Y, Hou Y, Wang Z, Sun Q, Lu S, Han Z. NEK5 regulates cell cycle progression during mouse oocyte maturation and preimplantation embryonic development. Mol Reprod Dev 2019; 86:1189-1198. [DOI: 10.1002/mrd.23234] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2019] [Accepted: 06/25/2019] [Indexed: 12/27/2022]
Affiliation(s)
- Yuan‐Yuan Li
- State Key Laboratory for Conservation and Utilization of Subtropical Agro‐Bioresources, Guangxi High Education Key Laboratory for Animal Reproduction and Biotechnology, College of Animal Science and TechnologyGuangxi UniversityNanning China
- State Key Laboratory of Stem Cell and Reproductive Biology, Institute of ZoologyChinese Academy of SciencesBeijing China
| | - Lei Guo
- State Key Laboratory of Stem Cell and Reproductive Biology, Institute of ZoologyChinese Academy of SciencesBeijing China
| | - Hui Li
- State Key Laboratory of Stem Cell and Reproductive Biology, Institute of ZoologyChinese Academy of SciencesBeijing China
| | - Jian Li
- State Key Laboratory of Stem Cell and Reproductive Biology, Institute of ZoologyChinese Academy of SciencesBeijing China
| | - Feng Dong
- State Key Laboratory of Stem Cell and Reproductive Biology, Institute of ZoologyChinese Academy of SciencesBeijing China
| | - Zi‐Yun Yi
- State Key Laboratory of Stem Cell and Reproductive Biology, Institute of ZoologyChinese Academy of SciencesBeijing China
| | - Ying‐Chun Ouyang
- State Key Laboratory of Stem Cell and Reproductive Biology, Institute of ZoologyChinese Academy of SciencesBeijing China
| | - Yi Hou
- State Key Laboratory of Stem Cell and Reproductive Biology, Institute of ZoologyChinese Academy of SciencesBeijing China
| | - Zhen‐Bo Wang
- State Key Laboratory of Stem Cell and Reproductive Biology, Institute of ZoologyChinese Academy of SciencesBeijing China
| | - Qing‐Yuan Sun
- State Key Laboratory of Stem Cell and Reproductive Biology, Institute of ZoologyChinese Academy of SciencesBeijing China
| | - Sheng‐Sheng Lu
- State Key Laboratory for Conservation and Utilization of Subtropical Agro‐Bioresources, Guangxi High Education Key Laboratory for Animal Reproduction and Biotechnology, College of Animal Science and TechnologyGuangxi UniversityNanning China
| | - Zhiming Han
- State Key Laboratory of Stem Cell and Reproductive Biology, Institute of ZoologyChinese Academy of SciencesBeijing China
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Daldello EM, Luong XG, Yang CR, Kuhn J, Conti M. Cyclin B2 is required for progression through meiosis in mouse oocytes. Development 2019; 146:dev172734. [PMID: 30952665 PMCID: PMC6503990 DOI: 10.1242/dev.172734] [Citation(s) in RCA: 33] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2018] [Accepted: 04/01/2019] [Indexed: 12/20/2022]
Abstract
Cyclins associate with cyclin-dependent serine/threonine kinase 1 (CDK1) to generate the M phase-promoting factor (MPF) activity essential for progression through mitosis and meiosis. Although cyclin B1 (CCNB1) is required for embryo development, previous studies concluded that CCNB2 is dispensable for cell cycle progression. Given previous findings of high Ccnb2 mRNA translation rates in prophase-arrested oocytes, we re-evaluated the role of this cyclin during meiosis. Ccnb2-/- oocytes underwent delayed germinal vesicle breakdown and showed defects during the metaphase-to-anaphase transition. This defective maturation was associated with compromised Ccnb1 and Moloney sarcoma oncogene (Mos) mRNA translation, delayed spindle assembly and increased errors in chromosome segregation. Given these defects, a significant percentage of oocytes failed to complete meiosis I because the spindle assembly checkpoint remained active and anaphase-promoting complex/cyclosome function was inhibited. In vivo, CCNB2 depletion caused ovulation of immature oocytes, premature ovarian failure, and compromised female fecundity. These findings demonstrate that CCNB2 is required to assemble sufficient pre-MPF for timely meiosis re-entry and progression. Although endogenous cyclins cannot compensate, overexpression of CCNB1/2 rescues the meiotic phenotypes, indicating similar molecular properties but divergent modes of regulation of these cyclins.
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Affiliation(s)
- Enrico Maria Daldello
- Center for Reproductive Sciences, University of California, San Francisco, CA 94143, USA
- Eli and Edythe Broad Center of Regeneration Medicine and Stem Cell Research, University of California, San Francisco, CA 94143, USA
- Department of Obstetrics and Gynecology and Reproductive Sciences, University of California, San Francisco, CA 94143, USA
| | - Xuan G Luong
- Center for Reproductive Sciences, University of California, San Francisco, CA 94143, USA
- Eli and Edythe Broad Center of Regeneration Medicine and Stem Cell Research, University of California, San Francisco, CA 94143, USA
- Department of Obstetrics and Gynecology and Reproductive Sciences, University of California, San Francisco, CA 94143, USA
| | - Cai-Rong Yang
- Center for Reproductive Sciences, University of California, San Francisco, CA 94143, USA
- Eli and Edythe Broad Center of Regeneration Medicine and Stem Cell Research, University of California, San Francisco, CA 94143, USA
- Department of Obstetrics and Gynecology and Reproductive Sciences, University of California, San Francisco, CA 94143, USA
| | - Jonathan Kuhn
- Cell and Tissue Biology Department, University of California, San Francisco, CA 94143, USA
| | - Marco Conti
- Center for Reproductive Sciences, University of California, San Francisco, CA 94143, USA
- Eli and Edythe Broad Center of Regeneration Medicine and Stem Cell Research, University of California, San Francisco, CA 94143, USA
- Department of Obstetrics and Gynecology and Reproductive Sciences, University of California, San Francisco, CA 94143, USA
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Wang XM, Li QY, Ren LL, Liu YM, Wang TS, Mu TC, Fu S, Liu C, Xiao JY. Effects of MCRS1 on proliferation, migration, invasion, and epithelial mesenchymal transition of gastric cancer cells by interacting with Pkmyt1 protein kinase. Cell Signal 2019; 59:171-181. [PMID: 30953699 DOI: 10.1016/j.cellsig.2019.04.002] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2019] [Revised: 04/02/2019] [Accepted: 04/02/2019] [Indexed: 12/31/2022]
Abstract
Microspherule protein 1(MCRS1) is known to be an oncogene in several tumors. However, recent studies have shown that MCRS1 inhibits lymphatic metastasis in gastric cancer (GC) patients by inhibiting telomerase activity. Protein kinase, membrane associated tyrosine/threonine 1(Pkmyt1), a member of the WEE1 family, has been found to interact with MCRS1 by yeast two-hybrid assay; however, how these two proteins interact in GC is still unclear. Hence, this study aimed to investigate the effect of MCRS1 interaction with Pkmyt1 on GC cell proliferation, migration, and invasion. Initially, we observed increased expression of MCRS1 in GC SGC-7901 cells and decreased expression in GC BGC-823 cells. Hence, we down-regulated MCRS1 expression in SGC-7901 cells and up-regulated it in BGC-823 cells. Our results showed that overexpression of MCRS1 inhibits the growth, invasion and migration of GC cells, while downregulation of MCRS1 promotes the growth, invasion and migration of GC cells. When MK1775, an inhibitor of WEE1 kinase, was added after downregulation of MCRS1, phenotypic recovery effects were observed. Overexpression of MCRS1 also inhibited the expression of Pkmyt1 and vice versa. This indicated that there might be a possible interaction between MCRS1 and Pkmyt1. Furthermore, immunoprecipitation assay revealed the interaction between MCRS1 and Pkmyt1 in virto, and immunofluorescence experiments showed that the two proteins were co-localized in the cytoplasm. In conclusion, our study confirmed the specific tumor suppressive activity of MCRS1 in GC proliferation, invasion and migration and suggested that it might inhibit the progression of GC through its interaction with Pkmyt1.
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Affiliation(s)
- Xin-Meng Wang
- Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Jinzhou Medical University, 3 Songpo Road, Jinzhou, Liaoning Province 121000, PR China.
| | - Qi-Yang Li
- Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Jinzhou Medical University, 3 Songpo Road, Jinzhou, Liaoning Province 121000, PR China
| | - Li-Li Ren
- Department of Neurobiology, School of Basic Medical Sciences, Jinzhou Medical University, 3 Songpo Road, Jinzhou, Liaoning Province 121000, PR China
| | - Yi-Meng Liu
- Department of Developmental Biology, School of Basic Medical Sciences, Jinzhou Medical University, 3 Songpo Road, Jinzhou, Liaoning Province 121000, PR China
| | - Tian-Shi Wang
- Department of Food Science, School of Basic Medical Sciences, Jinzhou Medical University, 3 Songpo Road, Jinzhou, Liaoning Province 121000, PR China
| | - Tian-Chi Mu
- Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Jinzhou Medical University, 3 Songpo Road, Jinzhou, Liaoning Province 121000, PR China
| | - Shuai Fu
- Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Jinzhou Medical University, 3 Songpo Road, Jinzhou, Liaoning Province 121000, PR China
| | - Chao Liu
- Department of Developmental Biology, School of Basic Medical Sciences, Jinzhou Medical University, 3 Songpo Road, Jinzhou, Liaoning Province 121000, PR China.
| | - Jian-Ying Xiao
- Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Jinzhou Medical University, 3 Songpo Road, Jinzhou, Liaoning Province 121000, PR China.
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Zhao S, Chen T, Yu M, Bian Y, Cao Y, Ning Y, Su S, Zhang J, Zhao S. Novel WEE2 gene variants identified in patients with fertilization failure and female infertility. Fertil Steril 2019; 111:519-526. [DOI: 10.1016/j.fertnstert.2018.11.018] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2018] [Revised: 10/30/2018] [Accepted: 11/14/2018] [Indexed: 12/12/2022]
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Zhang Z, Mu J, Zhao J, Zhou Z, Chen B, Wu L, Yan Z, Wang W, Zhao L, Dong J, Sun X, Kuang Y, Li B, Wang L, Sang Q. Novel mutations in WEE2
: Expanding the spectrum of mutations responsible for human fertilization failure. Clin Genet 2019; 95:520-524. [PMID: 30628060 DOI: 10.1111/cge.13505] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2018] [Revised: 12/24/2018] [Accepted: 01/07/2019] [Indexed: 01/31/2023]
Affiliation(s)
- Zhihua Zhang
- State Key Laboratory of Medical Neurobiology, Institutes of Biomedical Sciences; Zhongshan Hospital, Fudan University; Shanghai China
| | - Jian Mu
- State Key Laboratory of Medical Neurobiology, Institutes of Biomedical Sciences; Zhongshan Hospital, Fudan University; Shanghai China
| | - Junli Zhao
- Center for Reproductive Medicine, General Hospital of Ningxia Medical University; Yinchuan China
| | - Zhou Zhou
- State Key Laboratory of Medical Neurobiology, Institutes of Biomedical Sciences; Zhongshan Hospital, Fudan University; Shanghai China
| | - Biaobang Chen
- State Key Laboratory of Medical Neurobiology, Institutes of Biomedical Sciences; Zhongshan Hospital, Fudan University; Shanghai China
| | - Ling Wu
- Department of Assisted Reproduction; Shanghai Ninth People's Hospital, Shanghai Jiaotong University School of Medicine; Shanghai China
| | - Zheng Yan
- Department of Assisted Reproduction; Shanghai Ninth People's Hospital, Shanghai Jiaotong University School of Medicine; Shanghai China
| | - Wenjing Wang
- State Key Laboratory of Medical Neurobiology, Institutes of Biomedical Sciences; Zhongshan Hospital, Fudan University; Shanghai China
| | - Lin Zhao
- State Key Laboratory of Medical Neurobiology, Institutes of Biomedical Sciences; Zhongshan Hospital, Fudan University; Shanghai China
| | - Jie Dong
- State Key Laboratory of Medical Neurobiology, Institutes of Biomedical Sciences; Zhongshan Hospital, Fudan University; Shanghai China
| | - Xiaoxi Sun
- Shanghai Ji Ai Genetics and IVF Institute; Obstetrics and Gynecology Hospital, Fudan University; Shanghai China
| | - Yanping Kuang
- Department of Assisted Reproduction; Shanghai Ninth People's Hospital, Shanghai Jiaotong University School of Medicine; Shanghai China
| | - Bin Li
- Department of Assisted Reproduction; Shanghai Ninth People's Hospital, Shanghai Jiaotong University School of Medicine; Shanghai China
| | - Lei Wang
- State Key Laboratory of Genetic Engineering, Institutes of Biomedical Sciences; Zhongshan Hospital, Fudan University; Shanghai China
| | - Qing Sang
- State Key Laboratory of Medical Neurobiology, Institutes of Biomedical Sciences; Zhongshan Hospital, Fudan University; Shanghai China
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Yi ZY, Liang QX, Meng TG, Li J, Dong MZ, Hou Y, Ouyang YC, Zhang CH, Schatten H, Sun QY, Qiao J, Qian WP. PKCβ1 regulates meiotic cell cycle in mouse oocyte. Cell Cycle 2019; 18:395-412. [PMID: 30730241 DOI: 10.1080/15384101.2018.1564492] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
PKCβI, a member of the classical protein kinase C family, plays key roles in regulating cell cycle transition. Here, we report the expression, localization and functions of PKCβI in mouse oocyte meiotic maturation. PKCβI and p-PKCβI (phosphor-PKCβI) were expressed from germinal vesicle (GV) stage to metaphase II (MII) stage. Confocal microscopy revealed that PKCβI was localized in the GV and evenly distributed in the cytoplasm after GV breakdown (GVBD), and it was concentrated at the midbody at telophase in meiotic oocytes. While, p-PKCβI was concentrated at the spindle poles at the metaphase stages and associated with midbody at telophase. Depletion of PKCβI by specific siRNA injection resulted in defective spindles, accompanied with spindle assembly checkpoint activation, metaphase I arrest and failure of first polar body (PB1) extrusion. Live cell imaging analysis also revealed that knockdown of PKCβI resulted in abnormal spindles, misaligned chromosomes, and meiotic arrest of oocytes arrest at the Pro-MI/MI stage. PKCβI depletion did not affect the G2/M transition, but its overexpression delayed the G2/M transition through regulating Cyclin B1 level and Cdc2 activity. Our findings reveal that PKCβI is a critical regulator of meiotic cell cycle progression in oocytes. Abbreviations: PKC, protein kinase C; COC, cumulus-oocyte complexes; GV, germinal vesicle; GVBD, germinal vesicle breakdown; Pro-MI, first pro-metaphase; MI, first metaphase; Tel I, telophase I; MII, second metaphase; PB1, first polar body; SAC, spindle assembly checkpoint.
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Affiliation(s)
- Zi-Yun Yi
- a The Reproductive Medicine Center , Peking University Shenzhen Hospital, Shenzhen Peking University-The Hong Kong University of Science and Technology Medical Center , Shenzhen , China
| | - Qiu-Xia Liang
- a The Reproductive Medicine Center , Peking University Shenzhen Hospital, Shenzhen Peking University-The Hong Kong University of Science and Technology Medical Center , Shenzhen , China
| | - Tie-Gang Meng
- b State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences , Beijing , China
| | - Jian Li
- a The Reproductive Medicine Center , Peking University Shenzhen Hospital, Shenzhen Peking University-The Hong Kong University of Science and Technology Medical Center , Shenzhen , China
| | - Ming-Zhe Dong
- b State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences , Beijing , China
| | - Yi Hou
- b State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences , Beijing , China
| | - Ying-Chun Ouyang
- b State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences , Beijing , China
| | - Chun-Hui Zhang
- a The Reproductive Medicine Center , Peking University Shenzhen Hospital, Shenzhen Peking University-The Hong Kong University of Science and Technology Medical Center , Shenzhen , China
| | - Heide Schatten
- c Department of Veterinary Pathobiology , University of Missouri-Columbia , Columbia , MO , USA
| | - Qing-Yuan Sun
- b State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences , Beijing , China
| | - Jie Qiao
- d Reproductive Medical Center , Peking University Third Hospital , Beijing , China
| | - Wei-Ping Qian
- a The Reproductive Medicine Center , Peking University Shenzhen Hospital, Shenzhen Peking University-The Hong Kong University of Science and Technology Medical Center , Shenzhen , China
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Abstract
A central dogma of mammalian reproductive biology is that the size of the primordial follicle pool represents reproductive capacity in females. The assembly of the primordial follicle starts after the primordial germ cells (PGCs)-derived oocyte releases from the synchronously dividing germline cysts. PGCs initiate meiosis during fetal development. However, after synapsis and recombination of homologous chromosomes, they arrest at the diplotene stage of the first meiotic prophase (MI). The diplotene-arrested oocyte, together with the surrounding of a single layer of flattened granulosa cells, forms a basic unit of the ovary, the primordial follicle. At the start of each estrous (animal) or menstrual cycle (human), in response to a surge of luteinizing hormone (LH) from the pituitary gland, a limited number of primordial follicles are triggered to develop into primary follicles, preantral follicles, antral follicles and reach to preovulatory follicle stage. During the transition from the preantral to antral stages, the enclosed oocyte gradually acquires the capacity to resume meiosis. Meiotic resumption from the prophase of MI is morphologically characterized by the dissolution of the oocyte nuclear envelope, which is generally termed the "germinal vesicle breakdown" (GVBD). Following GVBD and completion of MI, the oocyte enters meiosis II without an obvious S-phase and arrests at metaphase phase II (MII) until fertilization. The underlying mechanism of meiotic arrest has been widely explored in numerous studies. Many studies indicated that two cellular second messengers, cyclic adenosine monophosphate (cAMP) and cyclic guanosine monophosphate (cGMP) play an essential role in maintaining oocyte meiotic arrest. This review will discuss how these two cyclic nucleotides regulate oocyte maturation by blocking or initiating meiotic processes, and to provide an insight in future research.
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Affiliation(s)
- Bo Pan
- Department of Animal Biosciences, University of Guelph, 50 Stone Road E, Building #70, Guelph, ON, N1G 2W1, Canada
| | - Julang Li
- Department of Animal Biosciences, University of Guelph, 50 Stone Road E, Building #70, Guelph, ON, N1G 2W1, Canada.
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Ramos Leal G, Santos Monteiro CA, Souza-Fabjan JMG, de Paula Vasconcelos CO, Garcia Nogueira LA, Reis Ferreira AM, Varella Serapião R. Role of cAMP modulator supplementations during oocyte in vitro maturation in domestic animals. Anim Reprod Sci 2018; 199:1-14. [PMID: 30449707 DOI: 10.1016/j.anireprosci.2018.11.002] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2018] [Revised: 10/11/2018] [Accepted: 11/07/2018] [Indexed: 12/17/2022]
Abstract
Cyclic adenosine monophosphate (cAMP) is an important molecule in signal transduction within the cell, functioning as a second cell messenger of gonadotrophin stimulation. The concentration of cAMP in cumulus-oocyte complexes (COCs) is known to be controlled through modulation of its synthesis by adenylyl cyclase (AC) and by degradation through the cyclic nucleotide phosphodiesterase (PDE) enzymes. One of the main obstacles for in vitro embryo production is the optimization of reproduction processes that occur in oocyte maturation. The function of cAMP is important in maintaining meiotic arrest in mammalian oocytes. When the oocyte is physically removed from the antral follicle for in vitro maturation (IVM), intra-oocyte cAMP concentrations decrease and spontaneous meiotic resumption begins, due to the depletion of inhibitory factors from the follicle. In many studies, relatively greater cAMP concentrations before IVM has been reported to improve oocyte competence, leading to subsequent benefits in embryonic development in different species. There, therefore, has been an increase in oocyte cAMP concentrations with several treatments and different approaches, such as invasive AC, stimulators of AC activity, PDE inhibitors, and cAMP analogs. The aim of this review is to comprehensively evaluate and provide data related to (i) the use of cAMP modulators during IVM and the effects on completion of meiosis and cytoplasmic reorganization, which are required for development of oocytes with the capacity to contribute to fertilization and subsequent embryonic development; and (ii) the main cAMP modulators and the effects when used in oocyte IVM.
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Affiliation(s)
- Gabriela Ramos Leal
- Universidade Federal Fluminense (UFF), Faculdade de Medicina Veterinária - Rua Vital Brazil Filho, 64, 24230-340, Niterói, Rio de Janeiro, Brazil.
| | - Clara Ana Santos Monteiro
- Universidade Federal Fluminense (UFF), Faculdade de Medicina Veterinária - Rua Vital Brazil Filho, 64, 24230-340, Niterói, Rio de Janeiro, Brazil
| | - Joanna Maria Gonçalves Souza-Fabjan
- Universidade Federal Fluminense (UFF), Faculdade de Medicina Veterinária - Rua Vital Brazil Filho, 64, 24230-340, Niterói, Rio de Janeiro, Brazil.
| | - Carlos Otávio de Paula Vasconcelos
- Universidade Federal Fluminense (UFF), Faculdade de Medicina Veterinária - Rua Vital Brazil Filho, 64, 24230-340, Niterói, Rio de Janeiro, Brazil
| | - Luiz Altamiro Garcia Nogueira
- Universidade Federal Fluminense (UFF), Faculdade de Medicina Veterinária - Rua Vital Brazil Filho, 64, 24230-340, Niterói, Rio de Janeiro, Brazil
| | - Ana Maria Reis Ferreira
- Universidade Federal Fluminense (UFF), Faculdade de Medicina Veterinária - Rua Vital Brazil Filho, 64, 24230-340, Niterói, Rio de Janeiro, Brazil
| | - Raquel Varella Serapião
- Empresa de Pesquisa Agropecuária do Estado do Rio de Janeiro (PESAGRO RIO) - Avenida São Boa Ventura, 770, 24120-19, Fonseca, Niterói, Rio de Janeiro, Brazil
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Propensity in low-grade oocytes for delayed germinal vesicle breakdown compromises the developmental ability of sub-optimal grade Bubalus bubalis oocytes. ZYGOTE 2018; 26:359-365. [PMID: 30289096 DOI: 10.1017/s0967199418000321] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
SummaryMaturing oocytes have diverse developmental potential and good quality oocytes exhibit a better ability to attain physiological milestones in a time-dependent manner. This situation necessitates the confirmation of oocyte developmental status more precisely under an in vitro embryo production (IVEP) regime. The aim of this study was to explain timely events in germinal vesicle breakdown (GVBD), an important milestone of oocyte nuclear maturation, to delineate the developmental capacity of Bubalus bubalis oocytes. In addition, the expression profile of genes responsible for GVBD was assessed in order to understand the molecular context responsible for GVBD. The chronology of GVBD events at different time intervals during in vitro maturation (IVM) suggests that the rate at which oocytes undergo GVBD was strikingly different in the brilliant cresyl blue (BCB)+ and BCB- groups. The expression of AKT and CDC25B genes for BCB+ oocytes was maximum at 8 h of IVM, and CCNB (cyclin B) peaked at around 10 h, which suggested that GVBD was finished after 10 h in BCB+ oocytes, whereas the expression of AKT and CDC25B was found to peak at around 12-14 h of IVM. This difference consequently delays the GVBD event by 2-4 h in BCB- oocytes. Poor abundance of gene transcripts was mainly implicated in delay and lower rate of GVBD in BCB- oocytes which in turn strongly affected the translational ability of oocytes to blastocysts. The findings of this study support the idea that there is a propensity in sub-optimal grade oocytes for delayed GVBD that compromises the developmental ability of low grade buffalo oocytes. The study highlights the very small, but importantly vital and separate, time window of the GVBD event during which the competence levels of buffalo oocytes are altered along with their translational ability to develop into the prospective embryos.
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Do DV, Strauss B, Cukuroglu E, Macaulay I, Wee KB, Hu TX, Igor RDLM, Lee C, Harrison A, Butler R, Dietmann S, Jernej U, Marioni J, Smith CWJ, Göke J, Surani MA. SRSF3 maintains transcriptome integrity in oocytes by regulation of alternative splicing and transposable elements. Cell Discov 2018; 4:33. [PMID: 29928511 PMCID: PMC6006335 DOI: 10.1038/s41421-018-0032-3] [Citation(s) in RCA: 36] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2017] [Revised: 01/19/2018] [Accepted: 03/28/2018] [Indexed: 02/08/2023] Open
Abstract
The RNA-binding protein SRSF3 (also known as SRp20) has critical roles in the regulation of pre-mRNA splicing. Zygotic knockout of Srsf3 results in embryo arrest at the blastocyst stage. However, SRSF3 is also present in oocytes, suggesting that it might be critical as a maternally inherited factor. Here we identify SRSF3 as an essential regulator of alternative splicing and of transposable elements to maintain transcriptome integrity in mouse oocyte. Using 3D time-lapse confocal live imaging, we show that conditional deletion of Srsf3 in fully grown germinal vesicle oocytes substantially compromises the capacity of germinal vesicle breakdown (GVBD), and consequently entry into meiosis. By combining single cell RNA-seq, and oocyte micromanipulation with steric blocking antisense oligonucleotides and RNAse-H inducing gapmers, we found that the GVBD defect in mutant oocytes is due to both aberrant alternative splicing and derepression of B2 SINE transposable elements. Together, our study highlights how control of transcriptional identity of the maternal transcriptome by the RNA-binding protein SRSF3 is essential to the development of fertilized-competent oocytes.
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Affiliation(s)
- Dang Vinh Do
- Wellcome Trust/Cancer Research UK Gurdon Institute, University of Cambridge, Tennis Court Road, Cambridge, CB2 1QN UK
- Department of Physiology, Development and Neuroscience, University of Cambridge, Downing Street, Cambridge, CB2 3DY UK
| | - Bernhard Strauss
- Wellcome Trust/Cancer Research UK Gurdon Institute, University of Cambridge, Tennis Court Road, Cambridge, CB2 1QN UK
| | - Engin Cukuroglu
- Computational and Systems Biology, Genome Institute of Singapore, 60 Biopolis Street, Singapore, 138672 Singapore
| | - Iain Macaulay
- Earlham Institute, Norwich Research Park, Norwich, NR4 7UH UK
| | - Keng Boon Wee
- Department Fluid Dynamics, Institute of High Performance Computing, 1 Fusionopolis Way, Singapore, 138632 Singapore
- Biomolecular Function Discovery Division, Bioinformatics Institute, 30 Biopolis Street, Singapore, 138671 Singapore
| | - Tim Xiaoming Hu
- EMBL European Bioinformatics Institute, Wellcome Genome Campus, Hinxton, CB10 1SD, Cambridge, UK
| | | | - Caroline Lee
- Wellcome Trust/Cancer Research UK Gurdon Institute, University of Cambridge, Tennis Court Road, Cambridge, CB2 1QN UK
- Department of Physiology, Development and Neuroscience, University of Cambridge, Downing Street, Cambridge, CB2 3DY UK
| | - Andrew Harrison
- Wellcome Trust/Cancer Research UK Gurdon Institute, University of Cambridge, Tennis Court Road, Cambridge, CB2 1QN UK
| | - Richard Butler
- Wellcome Trust/Cancer Research UK Gurdon Institute, University of Cambridge, Tennis Court Road, Cambridge, CB2 1QN UK
| | - Sabine Dietmann
- Wellcome Trust Medical Research Council Stem Cell Institute, University of Cambridge, Tennis Court Road, Cambridge, CB2 1QR UK
| | - Ule Jernej
- Department of Molecular Neuroscience, UCL Institute of Neurology, London, UK
| | - John Marioni
- Department of Molecular Neuroscience, UCL Institute of Neurology, London, UK
- Cancer Research UK Cambridge Institute, University of Cambridge, Li Ka Shing Centre, Robinson Way, Cambridge, CB2 0RE UK
- Wellcome Trust Sanger Institute, Wellcome Genome Campus, Hinxton, Cambridge, CB10 1SA UK
| | - Christopher W. J. Smith
- Department of Biochemistry, University of Cambridge, Tennis Court Road, Cambridge, CB2 1QW UK
| | - Jonathan Göke
- Computational and Systems Biology, Genome Institute of Singapore, 60 Biopolis Street, Singapore, 138672 Singapore
| | - M. Azim Surani
- Wellcome Trust/Cancer Research UK Gurdon Institute, University of Cambridge, Tennis Court Road, Cambridge, CB2 1QN UK
- Department of Physiology, Development and Neuroscience, University of Cambridge, Downing Street, Cambridge, CB2 3DY UK
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Conti M, Franciosi F. Acquisition of oocyte competence to develop as an embryo: integrated nuclear and cytoplasmic events. Hum Reprod Update 2018; 24:245-266. [PMID: 29432538 PMCID: PMC5907346 DOI: 10.1093/humupd/dmx040] [Citation(s) in RCA: 178] [Impact Index Per Article: 29.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2017] [Revised: 11/01/2017] [Accepted: 12/15/2017] [Indexed: 12/12/2022] Open
Abstract
Infertility affects ~7% of couples of reproductive age with little change in incidence in the last two decades. ART, as well as other interventions, have made major strides in correcting this condition. However, and in spite of advancements in the field, the age of the female partner remains a main factor for a successful outcome. A better understanding of the final stages of gamete maturation yielding an egg that can sustain embryo development and a pregnancy to term remains a major area for improvement in the field. This review will summarize the major cellular and molecular events unfolding at the oocyte-to-embryo transition. We will provide an update on the most important processes/pathways currently understood as the basis of developmental competence, including the molecular processes involved in mRNA storage, its recruitment to the translational machinery, and its degradation. We will discuss the hypothesis that the translational programme of maternal mRNAs plays a key role in establishing developmental competence. These regulations are essential to assemble the machinery that is used to establish a totipotent zygote. This hypothesis further supports the view that embryogenesis begins during oogenesis. A better understanding of the events required for developmental competence will guide the development of novel strategies to monitor and improve the success rate of IVF. Using this information, it will be possible to develop new biomarkers that may be used to better predict oocyte quality and in selection of the best egg for IVF.
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Affiliation(s)
- Marco Conti
- Department of OBGYN-RS, University of California San Francisco, 513 Parnassus Avenue, San Francisco, CA 94143-0556, USA
| | - Federica Franciosi
- Department of OBGYN-RS, University of California San Francisco, 513 Parnassus Avenue, San Francisco, CA 94143-0556, USA
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Sang Q, Li B, Kuang Y, Wang X, Zhang Z, Chen B, Wu L, Lyu Q, Fu Y, Yan Z, Mao X, Xu Y, Mu J, Li Q, Jin L, He L, Wang L. Homozygous Mutations in WEE2 Cause Fertilization Failure and Female Infertility. Am J Hum Genet 2018; 102:649-657. [PMID: 29606300 DOI: 10.1016/j.ajhg.2018.02.015] [Citation(s) in RCA: 111] [Impact Index Per Article: 18.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2017] [Accepted: 02/20/2018] [Indexed: 11/29/2022] Open
Abstract
Fertilization is a fundamental process of development and is a prerequisite for successful human reproduction. In mice, although several receptor proteins have been shown to play important roles in the process of fertilization, only three genes have been shown to cause fertilization failure and infertility when deleted in vivo. In clinical practice, some infertility case subjects suffer from recurrent failure of in vitro fertilization and intracytoplasmic sperm injection attempts due to fertilization failure, but the genetic basis of fertilization failure in humans remains largely unknown. Wee2 is a key oocyte-specific kinase involved in the control of meiotic arrest in mice, but WEE2 has not been associated with any diseases in humans. In this study, we identified homozygous mutations in WEE2 that are responsible for fertilization failure in humans. All four independent affected individuals had homozygous loss-of-function missense mutations or homozygous frameshift protein-truncating mutations, and the phenotype of fertilization failure was shown to follow a Mendelian recessive inheritance pattern. All four mutations significantly decreased the amount of WEE2 protein in vitro and in affected individuals' oocytes in vivo, and they all led to abnormal serine phosphorylation of WEE2 and reduced tyrosine 15 phosphorylation of Cdc2 in vitro. In addition, injection of WEE2 cRNA into affected individuals' oocytes rescued the fertilization failure phenotype and led to the formation of blastocysts in vitro. This work presents a novel gene responsible for human fertilization failure and has implications for future therapeutic treatments for infertility cases.
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Affiliation(s)
- Qing Sang
- State Key Laboratory of Genetic Engineering and School of Life Sciences, Institutes of Biomedical Sciences, Zhongshan Hospital, Fudan University, Shanghai 200032, China; GMU-GIBH Joint School of Life Sciences, Guangzhou Medical University, Guangzhou 511436, China.
| | - Bin Li
- Reproductive Medicine Center, Shanghai Ninth Hospital, Shanghai Jiao Tong University, Shanghai 200011, China
| | - Yanping Kuang
- Reproductive Medicine Center, Shanghai Ninth Hospital, Shanghai Jiao Tong University, Shanghai 200011, China
| | - Xueqian Wang
- State Key Laboratory of Genetic Engineering and School of Life Sciences, Institutes of Biomedical Sciences, Zhongshan Hospital, Fudan University, Shanghai 200032, China
| | - Zhihua Zhang
- State Key Laboratory of Genetic Engineering and School of Life Sciences, Institutes of Biomedical Sciences, Zhongshan Hospital, Fudan University, Shanghai 200032, China
| | - Biaobang Chen
- State Key Laboratory of Genetic Engineering and School of Life Sciences, Institutes of Biomedical Sciences, Zhongshan Hospital, Fudan University, Shanghai 200032, China
| | - Ling Wu
- Reproductive Medicine Center, Shanghai Ninth Hospital, Shanghai Jiao Tong University, Shanghai 200011, China
| | - Qifeng Lyu
- Reproductive Medicine Center, Shanghai Ninth Hospital, Shanghai Jiao Tong University, Shanghai 200011, China
| | - Yonglun Fu
- Reproductive Medicine Center, Shanghai Ninth Hospital, Shanghai Jiao Tong University, Shanghai 200011, China
| | - Zheng Yan
- Reproductive Medicine Center, Shanghai Ninth Hospital, Shanghai Jiao Tong University, Shanghai 200011, China
| | - Xiaoyan Mao
- Reproductive Medicine Center, Shanghai Ninth Hospital, Shanghai Jiao Tong University, Shanghai 200011, China
| | - Yao Xu
- State Key Laboratory of Genetic Engineering and School of Life Sciences, Institutes of Biomedical Sciences, Zhongshan Hospital, Fudan University, Shanghai 200032, China
| | - Jian Mu
- State Key Laboratory of Genetic Engineering and School of Life Sciences, Institutes of Biomedical Sciences, Zhongshan Hospital, Fudan University, Shanghai 200032, China
| | - Qiaoli Li
- State Key Laboratory of Genetic Engineering and School of Life Sciences, Institutes of Biomedical Sciences, Zhongshan Hospital, Fudan University, Shanghai 200032, China
| | - Li Jin
- State Key Laboratory of Genetic Engineering and School of Life Sciences, Institutes of Biomedical Sciences, Zhongshan Hospital, Fudan University, Shanghai 200032, China
| | - Lin He
- Bio-X Center, Key Laboratory for the Genetics of Developmental and Neuropsychiatric Disorders, Ministry of Education, Shanghai Jiao Tong University, Shanghai 200030, China
| | - Lei Wang
- State Key Laboratory of Genetic Engineering and School of Life Sciences, Institutes of Biomedical Sciences, Zhongshan Hospital, Fudan University, Shanghai 200032, China; GMU-GIBH Joint School of Life Sciences, Guangzhou Medical University, Guangzhou 511436, China.
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Onuma A, Fujioka YA, Fujii W, Sugiura K, Naito K. Effects of exportin 1 on nuclear transport and meiotic resumption in porcine full-grown and growing oocytes. Biol Reprod 2018; 98:501-509. [PMID: 29228114 DOI: 10.1093/biolre/iox168] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2017] [Accepted: 12/07/2017] [Indexed: 12/17/2023] Open
Abstract
Exportin 1 (XPO1) is a nuclear transport receptor involved in the nuclear export of majority proteins in somatic cells. In mammalian oocytes, however, only the presence of XPO1 has been reported at mRNA and protein levels, and the definitive functions of XPO1 and its effects on the meiotic maturation of oocytes have never been directly examined. In the present study, the expression state and the nuclear-export function of porcine XPO1 were analyzed in porcine oocytes. In addition, we investigated the effects of the overexpression and inhibition of XPO1 on meiotic regulation in full-grown and growing oocytes by mRNA injection and inhibitor treatment. Endogenous XPO1 was stably expressed in porcine oocytes during the germinal vesicle (GV) stage, and the expression of exogenous XPO1 significantly decreased the nuclear localization of XPO1 cargos, snurportin 1, and WEE1B. Inhibition of XPO1 by a specific inhibitor, leptomycin B, delayed the GV breakdown (GVBD), whereas the overexpression of XPO1 by mRNA injection accelerated the GVBD. XPO1 overexpression overcame the meiotic arrest induced by WEE1B expression in full-grown oocytes. Surprisingly, the GVBD of porcine growing oocytes, which could not resume meiosis by the maturation culture in vitro, was induced by the expression of exogenous XPO1. These results showed the presence of XPO1 and its function as a nuclear export receptor in mammalian oocytes, including growing oocytes, and they suggest that the regulation of nuclear transport has a large influence on the GV maintenance and meiotic resumption of oocytes.
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Affiliation(s)
- Asuka Onuma
- Department of Animal Resource Sciences, Graduate School of Agricultural and Life Sciences, The University of Tokyo, Tokyo, Japan
| | - Yoshie A Fujioka
- Department of Animal Resource Sciences, Graduate School of Agricultural and Life Sciences, The University of Tokyo, Tokyo, Japan
| | - Wataru Fujii
- Department of Animal Resource Sciences, Graduate School of Agricultural and Life Sciences, The University of Tokyo, Tokyo, Japan
| | - Koji Sugiura
- Department of Animal Resource Sciences, Graduate School of Agricultural and Life Sciences, The University of Tokyo, Tokyo, Japan
| | - Kunihiko Naito
- Department of Animal Resource Sciences, Graduate School of Agricultural and Life Sciences, The University of Tokyo, Tokyo, Japan
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Molecular Mechanisms of Prophase I Meiotic Arrest Maintenance and Meiotic Resumption in Mammalian Oocytes. Reprod Sci 2018; 26:1519-1537. [DOI: 10.1177/1933719118765974] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Mechanisms of meiotic prophase I arrest maintenance (germinal vesicle [GV] stage) and meiotic resumption (germinal vesicle breakdown [GVBD] stage) in mammalian oocytes seem to be very complicated. These processes are regulated via multiple molecular cascades at transcriptional, translational, and posttranslational levels, and many of them are interrelated. There are many molecular cascades of meiosis maintaining and meiotic resumption in oocyte which are orchestrated by multiple molecules produced by pituitary gland and follicular cells. Furthermore, many of these molecular cascades are duplicated, thus ensuring the stability of the entire system. Understanding mechanisms of oocyte maturation is essential to assess the oocyte status, develop effective protocols of oocyte in vitro maturation, and design novel contraceptive drugs. Mechanisms of meiotic arrest maintenance at prophase I and meiotic resumption in mammalian oocytes are covered in the present article.
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48
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Activity of MPF and expression of its related genes in mouse MI oocytes exposed to cadmium. Food Chem Toxicol 2017; 112:332-341. [PMID: 29287790 DOI: 10.1016/j.fct.2017.12.046] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2017] [Revised: 12/05/2017] [Accepted: 12/22/2017] [Indexed: 11/20/2022]
Abstract
Research has revealed that cadmium can disrupt ovarian function; however, few reports have focused on MI oocytes meiotic progression, especially the activity of maturation promoting factor (MPF) and its related genes (Cdk1, Ccnb1, and Cdc25b) expression. In this study, GV oocytes cultured in vitro for 0, 6, and 9 hours with five groups (control and doses of 0.05, 0.5, 2.5, and 5 μM Cd). At the same dose of cadmium but different exposure time: compared with 0h, Periodic changes in MPF activity were changed and continuously increased over time. The mRNA and protein expression of each MPF-related gene in different cadmium dose groups were changed compared with that of 0h. At the same exposure time but different dose of cadmium: compared with control group, MPF activity, mRNA and protein expressions of each MPF-related gene in all the cadmium exposure groups were increased at 9h after exposure. Cadmium maintains the high MPF activity in mouse MI oocytes during its meiotic process and disturbs the periodic change of MPF activity; meanwhile, cadmium exposure promotes the syntheses of MPF-related gene, which may be one of the molecular mechanisms for the maintenance of high MPF activity, and ultimately prevents the meiotic progression in oocytes.
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49
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The Phosphatase Dusp7 Drives Meiotic Resumption and Chromosome Alignment in Mouse Oocytes. Cell Rep 2017; 17:1426-1437. [PMID: 27783954 PMCID: PMC5215830 DOI: 10.1016/j.celrep.2016.10.007] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2016] [Revised: 07/29/2016] [Accepted: 10/03/2016] [Indexed: 12/31/2022] Open
Abstract
Mammalian oocytes are stored in the ovary, where they are arrested in prophase for prolonged periods. The mechanisms that abrogate the prophase arrest in mammalian oocytes and reinitiate meiosis are not well understood. Here, we identify and characterize an essential pathway for the resumption of meiosis that relies on the protein phosphatase DUSP7. DUSP7-depleted oocytes either fail to resume meiosis or resume meiosis with a significant delay. In the absence of DUSP7, Cdk1/CycB activity drops below the critical level required to reinitiate meiosis, precluding or delaying nuclear envelope breakdown. Our data suggest that DUSP7 drives meiotic resumption by dephosphorylating and thereby inactivating cPKC isoforms. In addition to controlling meiotic resumption, DUSP7 has a second function in chromosome segregation: DUSP7-depleted oocytes that enter meiosis show severe chromosome alignment defects and progress into anaphase prematurely. Altogether, these findings establish the phosphatase DUSP7 as an essential regulator of multiple steps in oocyte meiosis.
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50
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Nie ZW, Chen L, Jin QS, Gao YY, Wang T, Zhang X, Miao YL. Function and regulation mechanism of Chk1 during meiotic maturation in porcine oocytes. Cell Cycle 2017; 16:2220-2229. [PMID: 28933982 DOI: 10.1080/15384101.2017.1373221] [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] [Indexed: 10/18/2022] Open
Abstract
Checkpoint 1 (Chk1), as an important member of DNA replication checkpoint and DNA damage response, has an important role during the G2/M stage of mitosis. In this study, we used porcine oocyte as a model to investigate the function of Chk1 during porcine oocyte maturation. Chk1 was expressed from germinal vesicle (GV) to metaphase II (MII) stages, mainly localized in the cytoplasm at GV stage and moved to the spindle after germinal vesicle breakdown (GVBD). Chk1 depletion not only induced oocytes to be arrested at MI stage with abnormal chromosomes arrangement, but also inhibited the degradation of Cyclin B1 and decreased the expression of Mitotic Arrest Deficient 2-Like 1 (Mad2L1), one of spindle assembly checkpoint (SAC) proteins, and cadherin 1 (Cdh1), one of coactivation for anaphase-promoting complex/cyclosome (APC/C). Moreover, Chk1 overexpression delayed GVBD. These results demonstrated that Chk1 facilitated the timely degradation of Cyclin B1 at anaphase I (AI) and maintained the expression of Mad2L1 and Cdh1, which ensured that all chromosomes were accurately located in a line, and then oocytes passed metaphase I (MI) and AI and exited from the first meiotic division successfully. In addition, we proved that Chk1 had not function on GVBD of porcine oocytes, which suggested that maturation of porcine oocytes did not need the DNA damage checkpoint, which was different from the mouse oocyte maturation.
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Affiliation(s)
- Zheng-Wen Nie
- a Institute of Stem Cell and Regenerative Biology, College of Animal Science and Technology & College of Veterinary Medicine, Huazhong Agricultural University , Wuhan , Hubel , China.,b Key Laboratory of Agricultural Animal Genetics , Breeding and Reproduction (Huazhong Agricultural University), Ministry of Education , Wuhan , Hubel , China
| | - Li Chen
- a Institute of Stem Cell and Regenerative Biology, College of Animal Science and Technology & College of Veterinary Medicine, Huazhong Agricultural University , Wuhan , Hubel , China.,b Key Laboratory of Agricultural Animal Genetics , Breeding and Reproduction (Huazhong Agricultural University), Ministry of Education , Wuhan , Hubel , China
| | - Qiu-Shi Jin
- a Institute of Stem Cell and Regenerative Biology, College of Animal Science and Technology & College of Veterinary Medicine, Huazhong Agricultural University , Wuhan , Hubel , China.,b Key Laboratory of Agricultural Animal Genetics , Breeding and Reproduction (Huazhong Agricultural University), Ministry of Education , Wuhan , Hubel , China
| | - Ying-Ying Gao
- a Institute of Stem Cell and Regenerative Biology, College of Animal Science and Technology & College of Veterinary Medicine, Huazhong Agricultural University , Wuhan , Hubel , China.,b Key Laboratory of Agricultural Animal Genetics , Breeding and Reproduction (Huazhong Agricultural University), Ministry of Education , Wuhan , Hubel , China
| | - Tao Wang
- a Institute of Stem Cell and Regenerative Biology, College of Animal Science and Technology & College of Veterinary Medicine, Huazhong Agricultural University , Wuhan , Hubel , China.,b Key Laboratory of Agricultural Animal Genetics , Breeding and Reproduction (Huazhong Agricultural University), Ministry of Education , Wuhan , Hubel , China
| | - Xia Zhang
- a Institute of Stem Cell and Regenerative Biology, College of Animal Science and Technology & College of Veterinary Medicine, Huazhong Agricultural University , Wuhan , Hubel , China.,c The Cooperative Innovation Center for Sustainable Pig Production , Huazhong Agricultural University , Wuhan , Hubel , China
| | - Yi-Liang Miao
- a Institute of Stem Cell and Regenerative Biology, College of Animal Science and Technology & College of Veterinary Medicine, Huazhong Agricultural University , Wuhan , Hubel , China.,b Key Laboratory of Agricultural Animal Genetics , Breeding and Reproduction (Huazhong Agricultural University), Ministry of Education , Wuhan , Hubel , China.,c The Cooperative Innovation Center for Sustainable Pig Production , Huazhong Agricultural University , Wuhan , Hubel , China
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