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Zhang YL, Zheng W, Ren P, Jin J, Hu Z, Liu Q, Fan HY, Gong F, Lu GX, Lin G, Zhang S, Tong X. Biallelic variants in MOS cause large polar body in oocyte and human female infertility. Hum Reprod 2022; 37:1932-1944. [PMID: 35670744 DOI: 10.1093/humrep/deac120] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2021] [Revised: 04/29/2022] [Indexed: 01/28/2023] Open
Abstract
STUDY QUESTION What is the genetic basis of female infertility involving abnormal oocyte morphology with the production of a large first polar body (PB1)? SUMMARY ANSWER The homozygous missense variant (c.791C>G) and compound missense variants (c.596A>T and c.875C>T) in MOS proto-oncogene, serine/threonine kinase (MOS) (Online Mendelian Inheritance in Man (OMIM) reference: 190060; NM_005372.1) are responsible for abnormal oocyte morphology with the production of a large PB1 to cause infertility in women. WHAT IS KNOWN ALREADY MOS, an oocyte-specific gene, encodes a serine/threonine-protein kinase that directly phosphorylates mitogen-activated protein kinase (MAPK) kinase (MEK) to activate MAPK (also called extracellular-signal-regulated kinase (ERK)) signal cascade in the oocyte. Female mice lacking Mos remained viable, but infertile because of oocyte symmetric division, spontaneous parthenogenetic activation and early embryonic arrest. Recently, two independent studies demonstrated that female infertility with early embryonic arrest and fragmentation can be caused by biallelic mutations in MOS. However, so far, MOS variants have not been associated with the phenotype of large PB1 extrusion in human oocytes to contribute to female infertility. STUDY DESIGN, SIZE, DURATION Two independent infertile families characterized by the presence of large PB1 in oocytes were recruited between December 2020 and February 2022. PARTICIPANTS/MATERIALS, SETTING, METHODS Genomic DNA was extracted from the peripheral blood samples of the subjects for whole-exome sequencing. Pedigree analysis was validated by Sanger sequencing. Then, the pathogenic effects of the MOS variants on MOS protein properties and ERK1/2 activation were determined in HEK293 cells and mouse oocytes. MAIN RESULTS AND THE ROLE OF CHANCE We identified three rare missense variants in MOS, including a homozygous missense variant (c.791C>G) from Patient 1 in Family 1 and two compound missense variants (c.596A>T and c.875C>T) from twin sisters in Family 2. The MOS variants followed a recessive inheritance pattern in infertile patients. All three patients displayed a high percentage of large PB1 extrusion in the oocytes. The three MOS variants could not activate MEK1/2 and ERK1/2 in oocytes and HEK293 cells. In addition, when compared with wild-type MOS, the MOS variants decreased the MOS protein level and attenuated the binding capacity with MEK1. Microinjection of wild-type human MOS complementary RNAs (cRNAs) reversed the symmetric division of oocytes after siMos treatment. In contrast, the three MOS variants demonstrated no rescuing ability. LARGE SCALE DATA N/A. LIMITATIONS, REASONS FOR CAUTION Owing to the scarcity of human oocyte samples and the associated ethical restrictions, we could not perform the rescue attempt for the study patients. WIDER IMPLICATIONS OF THE FINDINGS Our findings expand the genetic and phenotypic spectrum of MOS variants in causing female infertility. Our study findings facilitate the early genetic diagnosis of abnormal oocyte morphology characterized as large PB1 that eventually causes infertility in women. STUDY FUNDING/COMPETING INTEREST(S) This study was supported by the National Natural Science Foundation of China (82071640 and 82001633), Natural Science Foundation of Zhejiang Province (LD22C060001), the Key Projects Jointly Constructed by the Ministry and the Province of Zhejiang Medical and Health Science and Technology Project (WKJ-ZJ-2005), China Postdoctoral Science Foundation (2020M682575 and 2021T140198), the Changsha Municipal Natural Science Foundation (kq2007022) and Hunan Provincial Grant for Innovative Province Construction (2019SK4012). None of the authors declare any competing interests. TRIAL REGISTRATION NUMBER N/A.
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Affiliation(s)
- Yin-Li Zhang
- Assisted Reproduction Unit, Department of Obstetrics and Gynecology, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, Hangzhou, China.,Key Laboratory of Reproductive Dysfunction Management of Zhejiang Province, Hangzhou, China
| | - Wei Zheng
- Laboratory of Reproductive and Stem Cell Engineering, NHC Key Laboratory of Human Stem Cell and Reproductive Engineering, Central South University, Changsha, China.,Clinical Research Center for Reproduction and Genetics in Hunan Province, Reproductive and Genetic Hospital of CITIC-XIANGYA, Changsha, China
| | - Peipei Ren
- Assisted Reproduction Unit, Department of Obstetrics and Gynecology, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, Hangzhou, China.,Key Laboratory of Reproductive Dysfunction Management of Zhejiang Province, Hangzhou, China
| | - Jiamin Jin
- Assisted Reproduction Unit, Department of Obstetrics and Gynecology, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, Hangzhou, China.,Key Laboratory of Reproductive Dysfunction Management of Zhejiang Province, Hangzhou, China
| | - Zhanhong Hu
- Assisted Reproduction Unit, Department of Obstetrics and Gynecology, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, Hangzhou, China.,Key Laboratory of Reproductive Dysfunction Management of Zhejiang Province, Hangzhou, China
| | - Qing Liu
- Assisted Reproduction Unit, Department of Obstetrics and Gynecology, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, Hangzhou, China.,Key Laboratory of Reproductive Dysfunction Management of Zhejiang Province, Hangzhou, China
| | - Heng-Yu Fan
- Key Laboratory of Reproductive Dysfunction Management of Zhejiang Province, Hangzhou, China.,Life Sciences Institute, Zhejiang University, Hangzhou, China
| | - Fei Gong
- Laboratory of Reproductive and Stem Cell Engineering, NHC Key Laboratory of Human Stem Cell and Reproductive Engineering, Central South University, Changsha, China.,Clinical Research Center for Reproduction and Genetics in Hunan Province, Reproductive and Genetic Hospital of CITIC-XIANGYA, Changsha, China
| | - Guang-Xiu Lu
- Laboratory of Reproductive and Stem Cell Engineering, NHC Key Laboratory of Human Stem Cell and Reproductive Engineering, Central South University, Changsha, China.,Clinical Research Center for Reproduction and Genetics in Hunan Province, Reproductive and Genetic Hospital of CITIC-XIANGYA, Changsha, China
| | - Ge Lin
- Laboratory of Reproductive and Stem Cell Engineering, NHC Key Laboratory of Human Stem Cell and Reproductive Engineering, Central South University, Changsha, China.,Clinical Research Center for Reproduction and Genetics in Hunan Province, Reproductive and Genetic Hospital of CITIC-XIANGYA, Changsha, China
| | - Songying Zhang
- Assisted Reproduction Unit, Department of Obstetrics and Gynecology, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, Hangzhou, China.,Key Laboratory of Reproductive Dysfunction Management of Zhejiang Province, Hangzhou, China
| | - Xiaomei Tong
- Assisted Reproduction Unit, Department of Obstetrics and Gynecology, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, Hangzhou, China.,Key Laboratory of Reproductive Dysfunction Management of Zhejiang Province, Hangzhou, China
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Hatırnaz Ş, Hatırnaz ES, Ellibeş Kaya A, Hatırnaz K, Soyer Çalışkan C, Sezer Ö, Dokuzeylül Güngor N, Demirel C, Baltacı V, Tan S, Dahan M. Oocyte maturation abnormalities - A systematic review of the evidence and mechanisms in a rare but difficult to manage fertility pheneomina. Turk J Obstet Gynecol 2022; 19:60-80. [PMID: 35343221 PMCID: PMC8966321 DOI: 10.4274/tjod.galenos.2022.76329] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
A small proportion of infertile women experience repeated oocyte maturation abnormalities (OMAS). OMAS include degenerated and dysmorphic oocytes, empty follicle syndrome, oocyte maturation arrest (OMA), resistant ovary syndrome and maturation defects due to primary ovarian insufficiency. Genetic factors play an important role in OMAS but still need specifications. This review documents the spectrum of OMAS and to evaluate the multiple subtypes classified as OMAS. In this review, readers will be able to understand the oocyte maturation mechanism, gene expression and their regulation that lead to different subtypes of OMAs, and it will discuss the animal and human studies related to OMAS and lastly the treatment options for OMAs. Literature searches using PubMed, MEDLINE, Embase, National Institute for Health and Care Excellence were performed to identify articles written in English focusing on Oocyte Maturation Abnormalities by looking for the following relevant keywords. A search was made with the specified keywords and included books and documents, clinical trials, animal studies, human studies, meta-analysis, randomized controlled trials, reviews, systematic reviews and options written in english. The search detected 3,953 sources published from 1961 to 2021. After title and abstract screening for study type, duplicates and relevancy, 2,914 studies were excluded. The remaining 1,039 records were assessed for eligibility by full-text reading and 886 records were then excluded. Two hundred and twenty seven full-text articles and 0 book chapters from the database were selected for inclusion. Overall, 227 articles, one unpublished and one abstract paper were included in this final review. In this review study, OMAS were classified and extensively evaluatedand possible treatment options under the light of current information, present literature and ongoing studies. Either genetic studies or in vitro maturation studies that will be handled in the future will lead more informations to be reached and may make it possible to obtain pregnancies.
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Affiliation(s)
- Şafak Hatırnaz
- Medicana Samsun International Hospital, In Vitro Fertilization-In Vitro Maturation Unit, Samsun, Turkey
| | - Ebru Saynur Hatırnaz
- Medicana Samsun International Hospital, In Vitro Fertilization-In Vitro Maturation Unit, Samsun, Turkey
| | - Aşkı Ellibeş Kaya
- Private Office, Clinic of Obstetrics and Gynecology Specialist, Samsun, Turkey
| | - Kaan Hatırnaz
- Ondokuz Mayıs University Faculty of Medicine, Department of Molecular Biology and Genetics, Samsun, Turkey
| | - Canan Soyer Çalışkan
- University of Health Sciences Turkey, Samsun Training and Research Hospital, Clinic of Obstetrics and Gynecology, Samsun, Turkey
| | - Özlem Sezer
- University of Health Sciences Turkey, Samsun Training and Research Hospital, Clinic of Genetics, Samsun, Turkey
| | | | - Cem Demirel
- Memorial Ataşehir Hospital, In Vitro Fertilization Unit, İstanbul, Turkey
| | | | - Seang Tan
- James Edmund Dodds Chair in ObGyn, Department of ObGyn, McGill University, OriginElle Fertility Clinic and Women, QC, Canada
| | - Michael Dahan
- McGill Reproductive Centre, Department of ObGyn, McGill University Montreal, Quebec, Canada
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3
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Zhang Y, Zheng W, Ren P, Hu H, Tong X, Zhang S, Li X, Wang H, Jiang J, Jin J, Yang W, Cao L, He Y, Ma Y, Zhang Y, Gu Y, Hu L, Luo K, Gong F, Lu G, Lin G, Fan H, Zhang S. Biallelic mutations in MOS cause female infertility characterized by human early embryonic arrest and fragmentation. EMBO Mol Med 2021; 13:e14887. [PMID: 34779126 PMCID: PMC8649871 DOI: 10.15252/emmm.202114887] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2021] [Revised: 10/19/2021] [Accepted: 10/22/2021] [Indexed: 01/26/2023] Open
Abstract
Early embryonic arrest and fragmentation (EEAF) is a common phenomenon leading to female infertility, but the genetic determinants remain largely unknown. The Moloney sarcoma oncogene (MOS) encodes a serine/threonine kinase that activates the ERK signaling cascade during oocyte maturation in vertebrates. Here, we identified four rare variants of MOS in three infertile female individuals with EEAF that followed a recessive inheritance pattern. These MOS variants encoded proteins that resulted in decreased phosphorylated ERK1/2 level in cells and oocytes, and displayed attenuated rescuing effects on cortical F-actin assembly. Using oocyte-specific Erk1/2 knockout mice, we verified that MOS-ERK signal pathway inactivation in oocytes caused EEAF as human. The RNA sequencing data revealed that maternal mRNA clearance was disrupted in human mature oocytes either with MOS homozygous variant or with U0126 treatment, especially genes relative to mitochondrial function. Mitochondrial dysfunction was observed in oocytes with ERK1/2 deficiency or inactivation. In conclusion, this study not only uncovers biallelic MOS variants causes EEAF but also demonstrates that MOS-ERK signaling pathway drives human oocyte cytoplasmic maturation to prevent EEAF.
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Affiliation(s)
- Yin‐Li Zhang
- Assisted Reproduction UnitDepartment of Obstetrics and GynecologySir Run Run Shaw HospitalSchool of MedicineZhejiang UniversityHangzhouChina
- Key Laboratory of Reproductive Dysfunction Management of Zhejiang ProvinceHangzhouChina
| | - Wei Zheng
- Clinical Research Center for Reproduction and Genetics in Hunan Province, Reproductive and Genetic Hospital of CITIC‐XiangyaChangshaChina
- Laboratory of Reproductive and Stem Cell Engineering, NHC Key Laboratory of Human Stem Cell and Reproductive EngineeringCentral South UniversityChangshaChina
| | - Peipei Ren
- Assisted Reproduction UnitDepartment of Obstetrics and GynecologySir Run Run Shaw HospitalSchool of MedicineZhejiang UniversityHangzhouChina
- Key Laboratory of Reproductive Dysfunction Management of Zhejiang ProvinceHangzhouChina
| | - Huiling Hu
- Clinical Research Center for Reproduction and Genetics in Hunan Province, Reproductive and Genetic Hospital of CITIC‐XiangyaChangshaChina
- Laboratory of Reproductive and Stem Cell Engineering, NHC Key Laboratory of Human Stem Cell and Reproductive EngineeringCentral South UniversityChangshaChina
| | - Xiaomei Tong
- Assisted Reproduction UnitDepartment of Obstetrics and GynecologySir Run Run Shaw HospitalSchool of MedicineZhejiang UniversityHangzhouChina
- Key Laboratory of Reproductive Dysfunction Management of Zhejiang ProvinceHangzhouChina
| | - Shuo‐Ping Zhang
- Clinical Research Center for Reproduction and Genetics in Hunan Province, Reproductive and Genetic Hospital of CITIC‐XiangyaChangshaChina
- Laboratory of Reproductive and Stem Cell Engineering, NHC Key Laboratory of Human Stem Cell and Reproductive EngineeringCentral South UniversityChangshaChina
| | - Xiang Li
- Assisted Reproduction UnitDepartment of Obstetrics and GynecologySir Run Run Shaw HospitalSchool of MedicineZhejiang UniversityHangzhouChina
- Key Laboratory of Reproductive Dysfunction Management of Zhejiang ProvinceHangzhouChina
| | - Haichao Wang
- Assisted Reproduction UnitDepartment of Obstetrics and GynecologySir Run Run Shaw HospitalSchool of MedicineZhejiang UniversityHangzhouChina
- Key Laboratory of Reproductive Dysfunction Management of Zhejiang ProvinceHangzhouChina
| | | | - Jiamin Jin
- Assisted Reproduction UnitDepartment of Obstetrics and GynecologySir Run Run Shaw HospitalSchool of MedicineZhejiang UniversityHangzhouChina
- Key Laboratory of Reproductive Dysfunction Management of Zhejiang ProvinceHangzhouChina
| | - Weijie Yang
- Assisted Reproduction UnitDepartment of Obstetrics and GynecologySir Run Run Shaw HospitalSchool of MedicineZhejiang UniversityHangzhouChina
- Key Laboratory of Reproductive Dysfunction Management of Zhejiang ProvinceHangzhouChina
| | - Lanrui Cao
- Life Sciences InstituteZhejiang UniversityHangzhouChina
| | - Yuanlin He
- Department of EpidemiologyCenter for Global HealthSchool of Public HealthNanjing Medical UniversityNanjingChina
| | - Yerong Ma
- Assisted Reproduction UnitDepartment of Obstetrics and GynecologySir Run Run Shaw HospitalSchool of MedicineZhejiang UniversityHangzhouChina
- Key Laboratory of Reproductive Dysfunction Management of Zhejiang ProvinceHangzhouChina
| | - Yingyi Zhang
- Assisted Reproduction UnitDepartment of Obstetrics and GynecologySir Run Run Shaw HospitalSchool of MedicineZhejiang UniversityHangzhouChina
- Key Laboratory of Reproductive Dysfunction Management of Zhejiang ProvinceHangzhouChina
| | - Yifan Gu
- Clinical Research Center for Reproduction and Genetics in Hunan Province, Reproductive and Genetic Hospital of CITIC‐XiangyaChangshaChina
- Laboratory of Reproductive and Stem Cell Engineering, NHC Key Laboratory of Human Stem Cell and Reproductive EngineeringCentral South UniversityChangshaChina
| | - Liang Hu
- Clinical Research Center for Reproduction and Genetics in Hunan Province, Reproductive and Genetic Hospital of CITIC‐XiangyaChangshaChina
- Laboratory of Reproductive and Stem Cell Engineering, NHC Key Laboratory of Human Stem Cell and Reproductive EngineeringCentral South UniversityChangshaChina
| | - Keli Luo
- Clinical Research Center for Reproduction and Genetics in Hunan Province, Reproductive and Genetic Hospital of CITIC‐XiangyaChangshaChina
- Laboratory of Reproductive and Stem Cell Engineering, NHC Key Laboratory of Human Stem Cell and Reproductive EngineeringCentral South UniversityChangshaChina
| | - Fei Gong
- Clinical Research Center for Reproduction and Genetics in Hunan Province, Reproductive and Genetic Hospital of CITIC‐XiangyaChangshaChina
- Laboratory of Reproductive and Stem Cell Engineering, NHC Key Laboratory of Human Stem Cell and Reproductive EngineeringCentral South UniversityChangshaChina
| | - Guang‐Xiu Lu
- Clinical Research Center for Reproduction and Genetics in Hunan Province, Reproductive and Genetic Hospital of CITIC‐XiangyaChangshaChina
- Laboratory of Reproductive and Stem Cell Engineering, NHC Key Laboratory of Human Stem Cell and Reproductive EngineeringCentral South UniversityChangshaChina
| | - Ge Lin
- Clinical Research Center for Reproduction and Genetics in Hunan Province, Reproductive and Genetic Hospital of CITIC‐XiangyaChangshaChina
- Laboratory of Reproductive and Stem Cell Engineering, NHC Key Laboratory of Human Stem Cell and Reproductive EngineeringCentral South UniversityChangshaChina
| | - Heng‐Yu Fan
- Key Laboratory of Reproductive Dysfunction Management of Zhejiang ProvinceHangzhouChina
- Life Sciences InstituteZhejiang UniversityHangzhouChina
| | - Songying Zhang
- Assisted Reproduction UnitDepartment of Obstetrics and GynecologySir Run Run Shaw HospitalSchool of MedicineZhejiang UniversityHangzhouChina
- Key Laboratory of Reproductive Dysfunction Management of Zhejiang ProvinceHangzhouChina
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Tannin Supplementation Improves Oocyte Cytoplasmic Maturation and Subsequent Embryo Development in Pigs. Antioxidants (Basel) 2021; 10:antiox10101594. [PMID: 34679729 PMCID: PMC8533281 DOI: 10.3390/antiox10101594] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2021] [Revised: 10/08/2021] [Accepted: 10/09/2021] [Indexed: 01/18/2023] Open
Abstract
To investigate the effects of tannins (TA) on porcine oocyte in vitro maturation (IVM), different concentrations of TA (0, 1, 10 and 100 μg/mL) were supplemented with a maturation medium and the COCs and subsequent embryonic development were examined. The results showed that 10 µg/mL TA significantly improved the cumulus expansion index (CEI), cumulus-expansion-related genes (PTGS1, PTGS2, PTX-3, TNFAIP6 and HAS2) expression and blastocyst formation rates after parthenogenetic activation (PA), in vitro fertilization (IVF) and somatic cell nuclear transfer (SCNT) compared to the control groups, but not oocyte nuclear maturation. Nevertheless, 10 µg/mL TA dramatically enhanced the mRNA expression of oocyte-development-related genes (BMP15, GDF9, CDC2 and CYCLIN B1), GSH, ATP, SOD1, PGC1α, BMP15, GDF9 and CDC2 levels and reduced intracellular ROS level in porcine oocytes. These results indicated that porcine oocyte cytoplasmic maturation was improved by 10 µg/mL TA treatment during IVM. In contrast, a high concentration of TA (100 μg/mL) significantly decreased the CEI and PTGS1, PTGS2, PTX-3 and HAS2 mRNA expressions in cumulus cells, and reduced oocyte nuclear maturation and the total cell numbers/blastocyst. In general, these data showed that 10 μg/mL TA supplementation has beneficial effects on oocyte cytoplasmic maturation and subsequent embryonic development in pigs.
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Li MH, Niu MH, Feng YQ, Zhang SE, Tang SW, Wang JJ, Cao HG, Shen W. Establishment of lncRNA-mRNA network in bovine oocyte between germinal vesicle and metaphase II stage. Gene 2021; 791:145716. [PMID: 33984447 DOI: 10.1016/j.gene.2021.145716] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2020] [Revised: 04/12/2021] [Accepted: 05/06/2021] [Indexed: 12/19/2022]
Abstract
Long non-coding RNA (lncRNA), a type of non-protein coding transcripts with lengths exceeding 200 nucleotides, is reported to be widely involved in many cellular and developmental processes. However, few roles of lncRNA in oocyte development have been defined. In this study, to uncover the effect of lncRNA during oocyte maturation, bovine germinal vesicle (GV) and in vitro matured metaphase II (MII) oocytes underwent RNA sequencing. Results revealed a wealth of candidate lncRNAs, which might participate in the biological processes of stage-specific oocytes. Furthermore, their trans- and cis-regulatory effects were investigated in-depth by using bioinformatic software. Functional enrichment analysis of target genes showed that these lncRNAs were likely involved in the regulation of many key signaling pathways during bovine oocyte maturation from GV to MII stage, as well as multiple lncRNA-mRNA networks. One novel lncRNA (MSTRG.19140) was particularly interesting, as it appeared to mediate the regulation of oocyte meiotic resumption, progesterone-mediated oocyte maturation, and cell cycle. Therefore, this study enhanced insights into the regulation of molecular mechanisms of bovine oocyte maturation from a lncRNA-mRNA network perspective.
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Affiliation(s)
- Ming-Hao Li
- College of Life Sciences, Key Laboratory of Animal Reproduction and Germplasm Enhancement in Universities of Shandong, Qingdao Agricultural University, Qingdao 266109, China; Anhui Province Key Laboratory of Local Livestock and Poultry Genetic Resource Conservation and Bio-breeding, College of Animal Science and Technology, Anhui Agricultural University, Hefei 230036, China
| | - Meng-Han Niu
- Anhui Province Key Laboratory of Local Livestock and Poultry Genetic Resource Conservation and Bio-breeding, College of Animal Science and Technology, Anhui Agricultural University, Hefei 230036, China
| | - Yan-Qin Feng
- College of Life Sciences, Key Laboratory of Animal Reproduction and Germplasm Enhancement in Universities of Shandong, Qingdao Agricultural University, Qingdao 266109, China
| | - Shu-Er Zhang
- Animal Husbandry General Station of Shandong Province, Jinan 250010, China
| | - Shao-Wei Tang
- Shandong Binzhou Academy of Animal Science and Veterinary Medicine, Binzhou 256600, China
| | - Jun-Jie Wang
- College of Life Sciences, Key Laboratory of Animal Reproduction and Germplasm Enhancement in Universities of Shandong, Qingdao Agricultural University, Qingdao 266109, China
| | - Hong-Guo Cao
- Anhui Province Key Laboratory of Local Livestock and Poultry Genetic Resource Conservation and Bio-breeding, College of Animal Science and Technology, Anhui Agricultural University, Hefei 230036, China.
| | - Wei Shen
- College of Life Sciences, Key Laboratory of Animal Reproduction and Germplasm Enhancement in Universities of Shandong, Qingdao Agricultural University, Qingdao 266109, China.
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Chakravarthi VP, Ghosh S, Housami SM, Wang H, Roby KF, Wolfe MW, Kinsey WH, Rumi MAK. ERβ regulated ovarian kisspeptin plays an important role in oocyte maturation. Mol Cell Endocrinol 2021; 527:111208. [PMID: 33592287 PMCID: PMC8906370 DOI: 10.1016/j.mce.2021.111208] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/07/2020] [Revised: 01/17/2021] [Accepted: 02/03/2021] [Indexed: 01/09/2023]
Abstract
Kisspeptin (KISS1) signaling in the hypothalamic-pituitary (H-P) axis plays an essential role in regulating gonadotropin secretion. KISS1 and KISS1 receptor (KISS1R) are also expressed in the ovary; however, the role of intraovarian KISS1 signaling remains unclear. Granulosa cell (GC)-specific expression of KISS1, and oocyte-specific expression of KISS1R indicate that GC-derived KISS1 may act on oocytes. Expression of KISS1 in GCs is induced by gonadotropins but it is absent in estrogen receptor β knockout (Erβnull) rat ovaries. We also observed that gonadotropin stimulation failed to induce maturation of Erβnull oocytes. Interestingly, KISS1 treatment of cumulus oocyte complexes (COCs) isolated from antral follicles promotes in vitro maturation of oocytes. Treatment of oocytes with KISS1 induced intracellular Ca2+ release, and increased activation of MAP kinase ERK1/2. KISS1 treatment also induced the expression of oocyte genes that are crucial for differentiation of GCs, and maturation of oocytes. Our findings suggest that ovarian KISS1-signaling plays an important role in gonadotropin induced follicle development and oocyte maturation.
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Affiliation(s)
| | - Subhra Ghosh
- Department of Pathology and Laboratory Medicine, USA
| | | | | | - Katherine F Roby
- Department of Anatomy and Cell Biology, USA; Institute for Reproduction and Perinatal Research, University of Kansas Medical Center, Kansas City, KS, USA
| | - Michael W Wolfe
- Department of Molecular and Integrative Physiology, USA; Institute for Reproduction and Perinatal Research, University of Kansas Medical Center, Kansas City, KS, USA
| | - William H Kinsey
- Department of Anatomy and Cell Biology, USA; Institute for Reproduction and Perinatal Research, University of Kansas Medical Center, Kansas City, KS, USA
| | - M A Karim Rumi
- Department of Pathology and Laboratory Medicine, USA; Institute for Reproduction and Perinatal Research, University of Kansas Medical Center, Kansas City, KS, USA.
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Cui W. Oocyte Spontaneous Activation: An Overlooked Cellular Event That Impairs Female Fertility in Mammals. Front Cell Dev Biol 2021; 9:648057. [PMID: 33763428 PMCID: PMC7982476 DOI: 10.3389/fcell.2021.648057] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2020] [Accepted: 02/08/2021] [Indexed: 01/14/2023] Open
Abstract
In mammals, including humans, mature oocytes are ovulated into the oviduct for fertilization. Normally, these oocytes are arrested at metaphase of the second meiosis (MII), and this arrest can be maintained for a certain period, which is essential for fertilization in vivo and oocyte manipulations in vitro, such as assisted reproduction in clinics and nuclear/spindle transfer in laboratories. However, in some species and under certain circumstances, exit from MII occurs spontaneously without any obvious stimulation or morphological signs, which is so-called oocyte spontaneous activation (OSA). This mini-review summarizes two types of OSA. In the first type (e.g., most rat strains), oocytes can maintain MII arrest in vivo, but once removed out, oocytes undergo OSA with sister chromatids separated and eventually scattered in the cytoplasm. Because the stimulation is minimal (oocyte collection itself), this OSA is incomplete and cannot force oocytes into interphase. Notably, once re-activated by sperm or chemicals, those scattered chromatids will form multiple pronuclei (MPN), which may recapitulate certain MPN and aneuploidy cases observed in fertility clinics. The second type of OSA occurs in ovarian oocytes (e.g., certain mouse strains and dromedary camel). Without ovulation or fertilization, these OSA-oocytes can initiate intrafollicular development, but these parthenotes cannot develop to term due to aberrant genomic imprinting. Instead, they either degrade or give rise to ovarian teratomas, which have also been reported in female patients. Last but not the least, genetic models displaying OSA phenotypes and the lessons we can learn from animal OSA for human reproduction are also discussed.
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Affiliation(s)
- Wei Cui
- Department of Veterinary and Animal Sciences, Animal Models Core Facility, Institute for Applied Life Sciences (IALS), University of Massachusetts Amherst, Amherst, MA, United States
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Jiao SY, Yang YH, Chen SR. Molecular genetics of infertility: loss-of-function mutations in humans and corresponding knockout/mutated mice. Hum Reprod Update 2020; 27:154-189. [PMID: 33118031 DOI: 10.1093/humupd/dmaa034] [Citation(s) in RCA: 113] [Impact Index Per Article: 28.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2020] [Revised: 07/15/2020] [Indexed: 12/11/2022] Open
Abstract
BACKGROUND Infertility is a major issue in human reproductive health, affecting an estimated 15% of couples worldwide. Infertility can result from disorders of sex development (DSD) or from reproductive endocrine disorders (REDs) with onset in infancy, early childhood or adolescence. Male infertility, accounting for roughly half of all infertility cases, generally manifests as decreased sperm count (azoospermia or oligozoospermia), attenuated sperm motility (asthenozoospermia) or a higher proportion of morphologically abnormal sperm (teratozoospermia). Female infertility can be divided into several classical types, including, but not limited to, oocyte maturation arrest, premature ovarian insufficiency (POI), fertilization failure and early embryonic arrest. An estimated one half of infertility cases have a genetic component; however, most genetic causes of human infertility are currently uncharacterized. The advent of high-throughput sequencing technologies has greatly facilitated the identification of infertility-associated gene mutations in patients over the past 20 years. OBJECTIVE AND RATIONALE This review aims to conduct a narrative review of the genetic causes of human infertility. Loss-of-function mutation discoveries related to human infertility are summarized and further illustrated in tables. Corresponding knockout/mutated animal models of causative genes for infertility are also introduced. SEARCH METHODS A search of the PubMed database was performed to identify relevant studies published in English. The term 'mutation' was combined with a range of search terms related to the core focus of the review: infertility, DSD, REDs, azoospermia or oligozoospermia, asthenozoospermia, multiple morphological abnormalities of the sperm flagella (MMAF), primary ciliary dyskinesia (PCD), acephalic spermatozoa syndrome (ASS), globozoospermia, teratozoospermia, acrosome, oocyte maturation arrest, POI, zona pellucida, fertilization defects and early embryonic arrest. OUTCOMES Our search generated ∼2000 records. Overall, 350 articles were included in the final review. For genetic investigation of human infertility, the traditional candidate gene approach is proceeding slowly, whereas high-throughput sequencing technologies in larger cohorts of individuals is identifying an increasing number of causative genes linked to human infertility. This review provides a wide panel of gene mutations in several typical forms of human infertility, including DSD, REDs, male infertility (oligozoospermia, MMAF, PCD, ASS and globozoospermia) and female infertility (oocyte maturation arrest, POI, fertilization failure and early embryonic arrest). The causative genes, their identified mutations, mutation rate, studied population and their corresponding knockout/mutated mice of non-obstructive azoospermia, MMAF, ASS, globozoospermia, oocyte maturation arrest, POI, fertilization failure and early embryonic arrest are further illustrated by tables. In this review, we suggest that (i) our current knowledge of infertility is largely obtained from knockout mouse models; (ii) larger cohorts of clinical cases with distinct clinical characteristics need to be recruited in future studies; (iii) the whole picture of genetic causes of human infertility relies on both the identification of more mutations for distinct types of infertility and the integration of known mutation information; (iv) knockout/mutated animal models are needed to show whether the phenotypes of genetically altered animals are consistent with findings in human infertile patients carrying a deleterious mutation of the homologous gene; and (v) the molecular mechanisms underlying human infertility caused by pathogenic mutations are largely unclear in most current studies. WILDER IMPLICATIONS It is important to use our current understanding to identify avenues and priorities for future research in the field of genetic causes of infertility as well as to apply mutation knowledge to risk prediction, genetic diagnosis and potential treatment for human infertility.
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Affiliation(s)
- Shi-Ya Jiao
- Education Key Laboratory of Cell Proliferation & Regulation Biology, College of Life Sciences, Beijing Normal University, 100875 Beijing, China
| | - Yi-Hong Yang
- Reproduction Medical Center of West China Second University Hospital, Key Laboratory of Obstetric, Gynecologic and Pediatric Diseases and Birth Defects of Ministry of Education, Sichuan University, 610041 Chengdu, China
| | - Su-Ren Chen
- Education Key Laboratory of Cell Proliferation & Regulation Biology, College of Life Sciences, Beijing Normal University, 100875 Beijing, China
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9
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Meneau F, Dupré A, Jessus C, Daldello EM. Translational Control of Xenopus Oocyte Meiosis: Toward the Genomic Era. Cells 2020; 9:E1502. [PMID: 32575604 PMCID: PMC7348711 DOI: 10.3390/cells9061502] [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: 04/29/2020] [Revised: 05/28/2020] [Accepted: 06/17/2020] [Indexed: 12/18/2022] Open
Abstract
The study of oocytes has made enormous contributions to the understanding of the G2/M transition. The complementarity of investigations carried out on various model organisms has led to the identification of the M-phase promoting factor (MPF) and to unravel the basis of cell cycle regulation. Thanks to the power of biochemical approaches offered by frog oocytes, this model has allowed to identify the core signaling components involved in the regulation of M-phase. A central emerging layer of regulation of cell division regards protein translation. Oocytes are a unique model to tackle this question as they accumulate large quantities of dormant mRNAs to be used during meiosis resumption and progression, as well as the cell divisions during early embryogenesis. Since these events occur in the absence of transcription, they require cascades of successive unmasking, translation, and discarding of these mRNAs, implying a fine regulation of the timing of specific translation. In the last years, the Xenopus genome has been sequenced and annotated, enabling the development of omics techniques in this model and starting its transition into the genomic era. This review has critically described how the different phases of meiosis are orchestrated by changes in gene expression. The physiological states of the oocyte have been described together with the molecular mechanisms that control the critical transitions during meiosis progression, highlighting the connection between translation control and meiosis dynamics.
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Affiliation(s)
| | | | | | - Enrico Maria Daldello
- Sorbonne Université, CNRS, Laboratoire de Biologie du Développement—Institut de Biologie Paris Seine, LBD—IBPS, F-75005 Paris, France; (F.M.); (A.D.); (C.J.)
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10
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Zhao H, Ge J, Wei J, Liu J, Liu C, Ma C, Zhao X, Wei Q, Ma B. Effect of FSH on E 2/GPR30-mediated mouse oocyte maturation in vitro. Cell Signal 2019; 66:109464. [PMID: 31704004 DOI: 10.1016/j.cellsig.2019.109464] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2019] [Revised: 10/27/2019] [Accepted: 10/31/2019] [Indexed: 02/06/2023]
Abstract
Mammalian oocyte restores meiosis can be stimulated by follicle-stimulating hormone (FSH) under normal physiological conditions. G-protein coupled receptor 30 (GPR30), an non-classical estrogen membrane receptor, has been widely reported in teleost oocyte maturation. However, it remains unknown whether GPR30 involves the role of FSH in mammalian cumulus expansion and oocyte maturation. Here, we used mouse cumulus-oocyte complexes (COCs) as a model to investigate how FSH affects the in vitro maturation of mouse oocytes mediated by 17β-estradiol (E2)/GPR30signaling. Our study reveals that FSH starts regulating mouse cumulus expansion precisely at 8h in in vitro culture. ELISA measurement of E2 levels in culture medium revealed that FSH activated aromatase to promote E2 production in vitro in cultured mouse COCs. Moreover, the results of real-time quantitative PCR indicated that FSH-induced in vitro maturation of mouse oocytes was regulated by the estrogen-signaling pathway mediated by GPR30; FSH treatment markedly increased the mRNA expression of HAS2, PTGS2, and GREM1 in COCs. Exploration of the underlying mechanism suggested that E2 produced by mouse COCs regulated the phosphorylation level of extracellular signal-regulated kinase 1/2 (ERK1/2) through GPR30 and thereby promoted mouse cumulus-cell expansion and oocyte maturation. In conclusion, our study reveals that FSH induced estrogen production in mouse COCs through aromatase, and that aromatase/GPR30/ERK1/2 signaling is involved in FSH-induced cumulus expansion.
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Affiliation(s)
- Hui Zhao
- College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi, People's Republic of China; Key Laboratory of Animal Biotechnology, Ministry of Agriculture, Yangling, Shaanxi, People's Republic of China
| | - Junbang Ge
- College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi, People's Republic of China; Key Laboratory of Animal Biotechnology, Ministry of Agriculture, Yangling, Shaanxi, People's Republic of China; Bio-X Institutes, Shanghai Jiao Tong University, Shanghai, 200240, People's Republic of China
| | - Juncai Wei
- College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi, People's Republic of China; Key Laboratory of Animal Biotechnology, Ministry of Agriculture, Yangling, Shaanxi, People's Republic of China
| | - Jie Liu
- College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi, People's Republic of China; Key Laboratory of Animal Biotechnology, Ministry of Agriculture, Yangling, Shaanxi, People's Republic of China
| | - Chen Liu
- College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi, People's Republic of China; Key Laboratory of Animal Biotechnology, Ministry of Agriculture, Yangling, Shaanxi, People's Republic of China
| | - Chiyuan Ma
- College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi, People's Republic of China; Key Laboratory of Animal Biotechnology, Ministry of Agriculture, Yangling, Shaanxi, People's Republic of China
| | - Xiaoe Zhao
- College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi, People's Republic of China; Key Laboratory of Animal Biotechnology, Ministry of Agriculture, Yangling, Shaanxi, People's Republic of China
| | - Qiang Wei
- College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi, People's Republic of China; Key Laboratory of Animal Biotechnology, Ministry of Agriculture, Yangling, Shaanxi, People's Republic of China.
| | - Baohua Ma
- College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi, People's Republic of China; Key Laboratory of Animal Biotechnology, Ministry of Agriculture, Yangling, Shaanxi, People's Republic of China.
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11
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Regulation of Translationally Repressed mRNAs in Zebrafish and Mouse Oocytes. Results Probl Cell Differ 2019; 63:297-324. [PMID: 28779323 DOI: 10.1007/978-3-319-60855-6_13] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
From the beginning of oogenesis, oocytes accumulate tens of thousands of mRNAs for promoting oocyte growth and development. A large number of these mRNAs are translationally repressed and localized within the oocyte cytoplasm. Translational activation of these dormant mRNAs at specific sites and timings plays central roles in driving progression of the meiotic cell cycle, axis formation, mitotic cleavages, transcriptional initiation, and morphogenesis. Regulation of the localization and temporal translation of these mRNAs has been shown to rely on cis-acting elements in the mRNAs and trans-acting factors recognizing and binding to the elements. Recently, using model vertebrate zebrafish, localization itself and formation of physiological structures such as RNA granules have been shown to coordinate the accurate timings of translational activation of dormant mRNAs. This subcellular regulation of mRNAs is also utilized in other animals including mouse. In this chapter, we review fundamental roles of temporal regulation of mRNA translation in oogenesis and early development and then focus on the mechanisms of mRNA regulation in the oocyte cytoplasm by which the activation of dormant mRNAs at specific timings is achieved.
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12
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Gheldof A, Mackay DJG, Cheong Y, Verpoest W. Genetic diagnosis of subfertility: the impact of meiosis and maternal effects. J Med Genet 2019; 56:271-282. [PMID: 30728173 PMCID: PMC6581078 DOI: 10.1136/jmedgenet-2018-105513] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2018] [Revised: 12/24/2018] [Accepted: 12/27/2018] [Indexed: 02/06/2023]
Abstract
During reproductive age, approximately one in seven couples are confronted with fertility problems. While the aetiology is diverse, including infections, metabolic diseases, hormonal imbalances and iatrogenic effects, it is becoming increasingly clear that genetic factors have a significant contribution. Due to the complex nature of infertility that often hints at a multifactorial cause, the search for potentially causal gene mutations in idiopathic infertile couples has remained difficult. Idiopathic infertility patients with a suspicion of an underlying genetic cause can be expected to have mutations in genes that do not readily affect general health but are only essential in certain processes connected to fertility. In this review, we specifically focus on genes involved in meiosis and maternal-effect processes, which are of critical importance for reproduction and initial embryonic development. We give an overview of genes that have already been linked to infertility in human, as well as good candidates which have been described in other organisms. Finally, we propose a phenotypic range in which we expect an optimal diagnostic yield of a meiotic/maternal-effect gene panel.
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Affiliation(s)
- Alexander Gheldof
- Center for Medical Genetics, Universitair Ziekenhuis Brussel, Brussels, Belgium
- Reproduction and Genetics Department, Vrije Universiteit Brussel, Brussels, Belgium
| | - Deborah J G Mackay
- Faculty of Medicine, University of Southampton, Southampton University Hospital, Southampton, UK
| | - Ying Cheong
- Complete Fertility, Human Development of Health, Faculty of Medicine, University of Southampton, Southampton, UK
| | - Willem Verpoest
- Reproduction and Genetics Department, Vrije Universiteit Brussel, Brussels, Belgium
- Center for Reproductive Medicine, Universitair Ziekenhuis Brussel, Brussels, Belgium
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13
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Peng Y, Chang L, Wang Y, Wang R, Hu L, Zhao Z, Geng L, Liu Z, Gong Y, Li J, Li X, Zhang C. Genome-wide differential expression of long noncoding RNAs and mRNAs in ovarian follicles of two different chicken breeds. Genomics 2018; 111:1395-1403. [PMID: 30268779 DOI: 10.1016/j.ygeno.2018.09.012] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2018] [Revised: 08/23/2018] [Accepted: 09/17/2018] [Indexed: 01/27/2023]
Abstract
Bashang long-tail chickens are an indigenous breed with dual purpose in China (meat and eggs) but have low egg laying performance. To improve the low egg laying performance, a genome-wide analysis of mRNAs and long noncoding RNAs (lncRNAs) from Bashang long-tail chickens and Hy-Line brown layers was performed. A total of 16,354 mRNAs and 8691 lncRNAs were obtained from ovarian follicles. Between the breeds, 160 mRNAs and 550 lncRNAs were found to be significantly differentially expressed. Integrated network analysis suggested some differentially expressed genes were involved in ovarian follicular development through oocyte meiosis, progesterone-mediated oocyte maturation, and cell cycle. The impact of lncRNAs on cis and trans target genes, indicating some lncRNAs may play important roles in ovarian follicular development. The current results provided a catalog of chicken ovarian follicular lncRNAs and genes for further study to understand their roles in regulation of egg laying performance.
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Affiliation(s)
- Yongdong Peng
- College of Animal Science and Technology, Hebei Normal University of Science and Technology, Qinhuangdao 066004, Hebei, People's Republic of China
| | - Li Chang
- College of Animal Science and Technology, Agricultural University of Hebei Province, Baoding 071001, Hebei, People's Republic of China; Qinhuangdao Animal Disease Control Center, Qinhuangdao 066001, Hebei, People's Republic of China
| | - Yaqi Wang
- College of Animal Science and Technology, Hebei Normal University of Science and Technology, Qinhuangdao 066004, Hebei, People's Republic of China
| | - Ruining Wang
- College of Animal Science and Technology, Hebei Normal University of Science and Technology, Qinhuangdao 066004, Hebei, People's Republic of China
| | - Lulu Hu
- College of Animal Science and Technology, Hebei Normal University of Science and Technology, Qinhuangdao 066004, Hebei, People's Republic of China
| | - Ziya Zhao
- College of Animal Science and Technology, Hebei Normal University of Science and Technology, Qinhuangdao 066004, Hebei, People's Republic of China
| | - Liying Geng
- College of Animal Science and Technology, Hebei Normal University of Science and Technology, Qinhuangdao 066004, Hebei, People's Republic of China
| | - Zhengzhu Liu
- College of Animal Science and Technology, Hebei Normal University of Science and Technology, Qinhuangdao 066004, Hebei, People's Republic of China
| | - Yuanfang Gong
- College of Animal Science and Technology, Hebei Normal University of Science and Technology, Qinhuangdao 066004, Hebei, People's Republic of China
| | - Jingshi Li
- College of Life Science and Technology, Hebei Normal University of Science and Technology, Qinhuangdao 066004, Hebei, People's Republic of China
| | - Xianglong Li
- College of Animal Science and Technology, Hebei Normal University of Science and Technology, Qinhuangdao 066004, Hebei, People's Republic of China.
| | - Chuansheng Zhang
- College of Animal Science and Technology, Hebei Normal University of Science and Technology, Qinhuangdao 066004, Hebei, People's Republic of China.
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14
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Wang JC, Geng Y, Han Y, Luo HN, Zhang YS. Dynamic expression of Epac and Rap1 in mouse oocytes and preimplantation embryos. Exp Ther Med 2018; 16:523-528. [PMID: 30116310 PMCID: PMC6090281 DOI: 10.3892/etm.2018.6253] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2017] [Accepted: 02/08/2018] [Indexed: 12/13/2022] Open
Abstract
Cyclic adenosine monophosphate (cAMP) is an important secondary messenger that has long been recognized to control the initiation of meiosis through the activation of protein kinase A (PKA) in mammalian oocytes. However, PKA is not the only target for cAMP. Recent studies on cAMP-dependent and PKA-independent pathways suggest that Ras-related protein-1 (Rap1) is activated through its cAMP-responsive guanine exchange factors (cAMP-GEFs), which comprises the involvement of exchange proteins directly activated by cAMP (Epac) in various cellular processes. The aim of the present study was to investigate the possible implication of a cAMP/Epac/Rap1 pathway in mouse oocytes and embryos. Reverse transcription polymerase chain reaction and immunohistochemistry assays demonstrated the expression of Epac and Rap1 in oocytes and embryos at different stages. Immunofluorescene demonstrated that Epac and Rap1 had different dynamic subcellular localizations and expression patterns in oocytes and embryos at different stages. It was therefore indicated that Epac and Rap1 may have multiple and specific functions during oocyte maturation and embryonic development.
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Affiliation(s)
- Jun-Chao Wang
- Center for Reproductive Medicine, Tianjin Central Hospital of Obstetrics and Gynaecology, Tianjin 300100, P.R. China
| | - Ying Geng
- Center for Reproductive Medicine, Tianjin Central Hospital of Obstetrics and Gynaecology, Tianjin 300100, P.R. China
| | - Ying Han
- Center for Reproductive Medicine, Tianjin Central Hospital of Obstetrics and Gynaecology, Tianjin 300100, P.R. China
| | - Hai-Ning Luo
- Center for Reproductive Medicine, Tianjin Central Hospital of Obstetrics and Gynaecology, Tianjin 300100, P.R. China
| | - Yun-Shan Zhang
- Center for Reproductive Medicine, Tianjin Central Hospital of Obstetrics and Gynaecology, Tianjin 300100, P.R. China
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15
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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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16
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Liu L, Yang M, Wang N, Li L, Chen Z, Zhang C. New insights of subfertility among transplanted women: Immunosuppressive drug FK506 leads to calcium leak and oocyte activation before fertilization. J Cell Biochem 2017; 119:2964-2977. [DOI: 10.1002/jcb.26510] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2017] [Accepted: 11/09/2017] [Indexed: 02/06/2023]
Affiliation(s)
- Linlin Liu
- Key Laboratory of Animal Resistance ResearchCollege of Life ScienceShandong Normal UniversityJi'nanShandongChina
- Key Laboratory of Medicinal Chemical BiologyDepartment of Cell Biology and GeneticsCollege of Life Sciences, Nankai UniversityTianjinChina
| | - Man Yang
- Key Laboratory of Animal Resistance ResearchCollege of Life ScienceShandong Normal UniversityJi'nanShandongChina
| | - Naiqiang Wang
- Key Laboratory of Animal Resistance ResearchCollege of Life ScienceShandong Normal UniversityJi'nanShandongChina
| | - Li Li
- The State Key Laboratory of Stem Cell and Reproductive BiologyInstitute of ZoologyChinese Academy of SciencesBeijingChina
| | - Zi‐Jiang Chen
- Center for Reproductive MedicineRen Ji HospitalSchool of MedicineShanghai Jiao Tong UniversityShanghaiChina
- Shanghai Key Laboratory for Assisted Reproduction and Reproductive GeneticsShanghaiChina
| | - Cong Zhang
- Key Laboratory of Animal Resistance ResearchCollege of Life ScienceShandong Normal UniversityJi'nanShandongChina
- Center for Reproductive MedicineRen Ji HospitalSchool of MedicineShanghai Jiao Tong UniversityShanghaiChina
- Shanghai Key Laboratory for Assisted Reproduction and Reproductive GeneticsShanghaiChina
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17
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Maddirevula S, Coskun S, Alhassan S, Elnour A, Alsaif HS, Ibrahim N, Abdulwahab F, Arold ST, Alkuraya FS. Female Infertility Caused by Mutations in the Oocyte-Specific Translational Repressor PATL2. Am J Hum Genet 2017; 101:603-608. [PMID: 28965844 DOI: 10.1016/j.ajhg.2017.08.009] [Citation(s) in RCA: 52] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2017] [Accepted: 08/11/2017] [Indexed: 12/23/2022] Open
Abstract
Infertility is a relatively common disorder of the reproductive system and remains unexplained in many cases. In vitro fertilization techniques have uncovered previously unrecognized infertility phenotypes, including oocyte maturation arrest, the molecular etiology of which remains largely unknown. We report two families affected by female-limited infertility caused by oocyte maturation failure. Positional mapping and whole-exome sequencing revealed two homozygous, likely deleterious variants in PATL2, each of which fully segregates with the phenotype within the respective family. PATL2 encodes a highly conserved oocyte-specific mRNP repressor of translation. Previous data have shown the strict requirement for PATL2 in oocyte-maturation in model organisms. Data gathered from the families in this study suggest that the role of PATL2 is conserved in humans and expand our knowledge of the factors that are necessary for female meiosis.
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Affiliation(s)
- Sateesh Maddirevula
- Department of Genetics, King Faisal Specialist Hospital and Research Center, Riyadh 11211, Saudi Arabia
| | - Serdar Coskun
- Department of Pathology and Laboratory Medicine, King Faisal Specialist Hospital and Research Center, Riyadh 11211, Saudi Arabia; College of Medicine, Alfaisal University, Riyadh, Saudi Arabia
| | - Saad Alhassan
- Department of Obstetrics and Gynecology, King Faisal Specialist Hospital and Research Center, Riyadh 11211, Saudi Arabia
| | - Atif Elnour
- Dr. Sulaiman Al Habib Medical Group, Olaya Complex, Riyadh 11643, Saudi Arabia
| | - Hessa S Alsaif
- Department of Genetics, King Faisal Specialist Hospital and Research Center, Riyadh 11211, Saudi Arabia
| | - Niema Ibrahim
- Department of Genetics, King Faisal Specialist Hospital and Research Center, Riyadh 11211, Saudi Arabia
| | - Firdous Abdulwahab
- Department of Genetics, King Faisal Specialist Hospital and Research Center, Riyadh 11211, Saudi Arabia
| | - Stefan T Arold
- King Abdullah University of Science and Technology, Computational Bioscience Research Center, Division of Biological and Environmental Sciences and Engineering, Thuwal 23955-6900, Saudi Arabia
| | - Fowzan S Alkuraya
- Department of Genetics, King Faisal Specialist Hospital and Research Center, Riyadh 11211, Saudi Arabia; Department of Anatomy and Cell Biology, College of Medicine, Alfaisal University, Riyadh 11533, Saudi Arabia; Saudi Human Genome Program, King Abdulaziz City for Science and Technology, Riyadh 11442, Saudi Arabia.
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18
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Hu KL, Zhao H, Chang HM, Yu Y, Qiao J. Kisspeptin/Kisspeptin Receptor System in the Ovary. Front Endocrinol (Lausanne) 2017; 8:365. [PMID: 29354093 PMCID: PMC5758547 DOI: 10.3389/fendo.2017.00365] [Citation(s) in RCA: 78] [Impact Index Per Article: 11.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/16/2017] [Accepted: 12/13/2017] [Indexed: 12/26/2022] Open
Abstract
Kisspeptins are a family of neuropeptides that are critical for initiating puberty and regulating ovulation in sexually mature females via the central control of the hypothalamic-pituitary-gonadal axis. Recent studies have shown that kisspeptin and its receptor kisspeptin receptor (KISS1R) are expressed in the mammalian ovary. Convincing evidence indicates that kisspeptins can activate a wide variety of signals via its binding to KISS1R. Experimental data gathered recently suggest a putative role of kisspeptin signaling in the direct control of ovarian function, including follicular development, oocyte maturation, steroidogenesis, and ovulation. Dysregulation or naturally occurring mutations of the kisspeptin/KISS1R system may negatively affect the ovarian function, leading to reproductive pathology or female infertility. A comprehensive understanding of the expression, actions, and underlying molecular mechanisms of this system in the human ovary is essential for novel approaches to therapeutic and diagnostic interventions in reproductive diseases and infertility.
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Affiliation(s)
- Kai-Lun Hu
- Beijing Key Laboratory of Reproductive Endocrinology and Assisted Reproductive Technology and Key Laboratory of Assisted Reproduction, Ministry of Education, Center for Reproductive Medicine, Department of Obstetrics and Gynecology, Peking University Third Hospital, Beijing, China
| | - Hongcui Zhao
- Beijing Key Laboratory of Reproductive Endocrinology and Assisted Reproductive Technology and Key Laboratory of Assisted Reproduction, Ministry of Education, Center for Reproductive Medicine, Department of Obstetrics and Gynecology, Peking University Third Hospital, Beijing, China
- *Correspondence: Hongcui Zhao, ; Yang Yu,
| | - Hsun-Ming Chang
- Beijing Key Laboratory of Reproductive Endocrinology and Assisted Reproductive Technology and Key Laboratory of Assisted Reproduction, Ministry of Education, Center for Reproductive Medicine, Department of Obstetrics and Gynecology, Peking University Third Hospital, Beijing, China
| | - Yang Yu
- Beijing Key Laboratory of Reproductive Endocrinology and Assisted Reproductive Technology and Key Laboratory of Assisted Reproduction, Ministry of Education, Center for Reproductive Medicine, Department of Obstetrics and Gynecology, Peking University Third Hospital, Beijing, China
- *Correspondence: Hongcui Zhao, ; Yang Yu,
| | - Jie Qiao
- Beijing Key Laboratory of Reproductive Endocrinology and Assisted Reproductive Technology and Key Laboratory of Assisted Reproduction, Ministry of Education, Center for Reproductive Medicine, Department of Obstetrics and Gynecology, Peking University Third Hospital, Beijing, China
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Formation of mos RNA granules in the zebrafish oocyte that differ from cyclin B1 RNA granules in distribution, density and regulation. Eur J Cell Biol 2016; 95:563-573. [PMID: 27756483 DOI: 10.1016/j.ejcb.2016.10.001] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2016] [Revised: 09/07/2016] [Accepted: 10/03/2016] [Indexed: 12/28/2022] Open
Abstract
Many translationally repressed mRNAs are deposited in the oocyte cytoplasm for progression of the meiotic cell cycle and early development. mos and cyclin B1 mRNAs encode proteins promoting oocyte meiosis, and translational control of these mRNAs is important for normal progression of meiotic cell division. We previously demonstrated that cyclin B1 mRNA forms RNA granules in the zebrafish and mouse oocyte cytoplasm and that the formation of RNA granules is crucial for regulating the timing of translational activation of the mRNA. However, whether the granule formation is specific to cyclin B1 mRNA remains unknown. In this study, we found that zebrafish mos mRNA forms granules distinct from those of cyclin B1 mRNA. Fluorescent in situ hybridization analysis showed that cyclin B1 RNA granules were assembled in dense clusters, while mos RNA granules were distributed diffusely in the animal polar cytoplasm. Sucrose density gradient ultracentrifugation analysis showed that the density of mos RNA granules was partly lower than that of cyclin B1 mRNA. Similar to cyclin B1 RNA granules, mos RNA granules were disassembled after initiation of oocyte maturation at the timing at which the poly(A) tail was elongated. However, while almost all of the granules of cyclin B1 were disassembled simultaneously, a fraction of mos RNA granules firstly disappeared and then a large part of them was disassembled. In addition, while cyclin B1 RNA granules were disassembled in a manner dependent on actin filament depolymerization, certain fractions of mos RNA granules were disassembled independently of actin filaments. These results suggest that cytoplasmic regulation of translationally repressed mRNAs by formation of different RNA granules is a key mechanism for translational control of distinct mRNAs in the oocyte.
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Qi ST, Ma JY, Wang ZB, Guo L, Hou Y, Sun QY. N6-Methyladenosine Sequencing Highlights the Involvement of mRNA Methylation in Oocyte Meiotic Maturation and Embryo Development by Regulating Translation in Xenopus laevis. J Biol Chem 2016; 291:23020-23026. [PMID: 27613873 DOI: 10.1074/jbc.m116.748889] [Citation(s) in RCA: 49] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2016] [Indexed: 11/06/2022] Open
Abstract
During the oogenesis of Xenopus laevis, oocytes accumulate maternal materials for early embryo development. As the transcription activity of the oocyte is silenced at the fully grown stage and the global genome is reactivated only by the mid-blastula embryo stage, the translation of maternal mRNAs accumulated during oocyte growth should be accurately regulated. Previous evidence has illustrated that the poly(A) tail length and RNA binding elements mediate RNA translation regulation in the oocyte. Recently, RNA methylation has been found to exist in various systems. In this study, we sequenced the N6-methyladenosine (m6A) modified mRNAs in fully grown germinal vesicle-stage and metaphase II-stage oocytes. As a result, we identified 4207 mRNAs with m6A peaks in germinal vesicle-stage or metaphase II-stage oocytes. When we integrated the mRNA methylation data with transcriptome and proteome data, we found that the highly methylated mRNAs showed significantly lower protein levels than those of the hypomethylated mRNAs, although the RNA levels showed no significant difference. We also found that the hypomethylated mRNAs were mainly enriched in the cell cycle and translation pathways, whereas the highly methylated mRNAs were mainly associated with protein phosphorylation. Our results suggest that oocyte mRNA methylation can regulate cellular translation and cell division during oocyte meiotic maturation and early embryo development.
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Affiliation(s)
- Shu-Tao Qi
- From the State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, China and
| | - Jun-Yu Ma
- the College of Animal Science and Technology, Qingdao Agricultural University, Qingdao 266109, China
| | - Zhen-Bo Wang
- From the State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, China and
| | - Lei Guo
- From the State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, China and
| | - Yi Hou
- From the State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, China and
| | - Qing-Yuan Sun
- From the State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, China and .,the College of Animal Science and Technology, Qingdao Agricultural University, Qingdao 266109, China
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Nakai M, Ito J, Kashiwazaki N, Men N, Tanihara F, Noguchi J, Kaneko H, Onishi A, Kikuchi K. Treatment with protein kinase C activator is effective for improvement of male pronucleus formation and further embryonic development of sperm-injected oocytes in pigs. Theriogenology 2016; 85:703-8. [DOI: 10.1016/j.theriogenology.2015.10.011] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2015] [Revised: 10/05/2015] [Accepted: 10/07/2015] [Indexed: 11/26/2022]
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Ajduk A, Zernicka-Goetz M. Polarity and cell division orientation in the cleavage embryo: from worm to human. Mol Hum Reprod 2015; 22:691-703. [PMID: 26660321 PMCID: PMC5062000 DOI: 10.1093/molehr/gav068] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2015] [Accepted: 11/25/2015] [Indexed: 01/01/2023] Open
Abstract
Cleavage is a period after fertilization, when a 1-cell embryo starts developing into a multicellular organism. Due to a series of mitotic divisions, the large volume of a fertilized egg is divided into numerous smaller, nucleated cells—blastomeres. Embryos of different phyla divide according to different patterns, but molecular mechanism of these early divisions remains surprisingly conserved. In the present paper, we describe how polarity cues, cytoskeleton and cell-to-cell communication interact with each other to regulate orientation of the early embryonic division planes in model animals such as Caenorhabditis elegans, Drosophila and mouse. We focus particularly on the Par pathway and the actin-driven cytoplasmic flows that accompany it. We also describe a unique interplay between Par proteins and the Hippo pathway in cleavage mammalian embryos. Moreover, we discuss the potential meaning of polarity, cytoplasmic dynamics and cell-to-cell communication as quality biomarkers of human embryos.
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Affiliation(s)
- Anna Ajduk
- Department of Embryology, Faculty of Biology, University of Warsaw, Miecznikowa 1, 02-096 Warsaw, Poland
| | - Magdalena Zernicka-Goetz
- Department of Physiology, Development and Neuroscience, University of Cambridge, Downing Street, Cambridge CB2 3DY, UK
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23
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Abstract
Vertebrate reproduction requires a myriad of precisely orchestrated events-in particular, the maternal production of oocytes, the paternal production of sperm, successful fertilization, and initiation of early embryonic cell divisions. These processes are governed by a host of signaling pathways. Protein kinase and phosphatase signaling pathways involving Mos, CDK1, RSK, and PP2A regulate meiosis during maturation of the oocyte. Steroid signals-specifically testosterone-regulate spermatogenesis, as does signaling by G-protein-coupled hormone receptors. Finally, calcium signaling is essential for both sperm motility and fertilization. Altogether, this signaling symphony ensures the production of viable offspring, offering a chance of genetic immortality.
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Affiliation(s)
- Sally Kornbluth
- Duke University School of Medicine, Durham, North Carolina 27710
| | - Rafael Fissore
- University of Massachusetts, Amherst, Veterinary and Animal Sciences, Amherst, Massachusetts 01003
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24
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Bertoldo MJ, Guibert E, Faure M, Ramé C, Foretz M, Viollet B, Dupont J, Froment P. Specific deletion of AMP-activated protein kinase (α1AMPK) in murine oocytes alters junctional protein expression and mitochondrial physiology. PLoS One 2015; 10:e0119680. [PMID: 25767884 PMCID: PMC4359026 DOI: 10.1371/journal.pone.0119680] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2014] [Accepted: 01/15/2015] [Indexed: 12/30/2022] Open
Abstract
Oogenesis and folliculogenesis are dynamic processes that are regulated by endocrine, paracrine and autocrine signals. These signals are exchanged between the oocyte and the somatic cells of the follicle. Here we analyzed the role of AMP-activated protein kinase (AMPK), an important regulator of cellular energy homeostasis, by using transgenic mice deficient in α1AMPK specifically in the oocyte. We found a decrease of 27% in litter size was observed in ZP3-α1AMPK-/- (ZP3-KO) female mice. Following in vitro fertilization, where conditions are stressful for the oocyte and embryo, ZP3-KO oocytes were 68% less likely to pass the 2-cell stage. In vivo and in cumulus-oocyte complexes, several proteins involved in junctional communication, such as connexin37 and N-cadherin were down-regulated in the absence of α1AMPK. While the two signalling pathways (PKA and MAPK) involved in the junctional communication between the cumulus/granulosa cells and the oocyte were stimulated in control oocytes, ZP3-KO oocytes exhibited only low phosphorylation of MAPK or CREB proteins. In addition, MII oocytes deficient in α1AMPK had a 3-fold lower ATP concentration, an increase in abnormal mitochondria, and a decrease in cytochrome C and PGC1α levels, suggesting perturbed energy production by mitochondria. The absence of α1AMPK also induced a reduction in histone deacetylase activity, which was associated with an increase in histone H3 acetylation (K9/K14 residues). Together, the results of the present study suggest that absence of AMPK, modifies oocyte quality through energy processes and oocyte/somatic cell communication. The limited effect observed in vivo could be partly due to a favourable follicle microenvironment where nutrients, growth factors, and adequate cell interaction were present. Whereas in a challenging environment such as that of in vitro culture following IVF, the phenotype is revealed.
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Affiliation(s)
- Michael J. Bertoldo
- UMR 7247 INRA CNRS Université de Tours Haras Nationaux Physiologie de la Reproduction et des Comportements, 37380, Nouzilly, France
- School of Women’s and Children’s Health, Discipline of Obstetrics and Gynaecology, University of New South Wales, Sydney, NSW, Australia
| | - Edith Guibert
- UMR 7247 INRA CNRS Université de Tours Haras Nationaux Physiologie de la Reproduction et des Comportements, 37380, Nouzilly, France
| | - Melanie Faure
- UMR 7247 INRA CNRS Université de Tours Haras Nationaux Physiologie de la Reproduction et des Comportements, 37380, Nouzilly, France
| | - Christelle Ramé
- UMR 7247 INRA CNRS Université de Tours Haras Nationaux Physiologie de la Reproduction et des Comportements, 37380, Nouzilly, France
| | - Marc Foretz
- INSERM, U1016, Institut Cochin, Paris, France
- CNRS, UMR8104, Paris, France
- Université Paris Descartes, Sorbonne Paris Cité, Paris, France
| | - Benoit Viollet
- INSERM, U1016, Institut Cochin, Paris, France
- CNRS, UMR8104, Paris, France
- Université Paris Descartes, Sorbonne Paris Cité, Paris, France
| | - Joëlle Dupont
- UMR 7247 INRA CNRS Université de Tours Haras Nationaux Physiologie de la Reproduction et des Comportements, 37380, Nouzilly, France
| | - Pascal Froment
- UMR 7247 INRA CNRS Université de Tours Haras Nationaux Physiologie de la Reproduction et des Comportements, 37380, Nouzilly, France
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25
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SATO E. Intraovarian control of selective follicular growth and induction of oocyte maturation in mammals. PROCEEDINGS OF THE JAPAN ACADEMY. SERIES B, PHYSICAL AND BIOLOGICAL SCIENCES 2015; 91:76-91. [PMID: 25765010 PMCID: PMC4410087 DOI: 10.2183/pjab.91.76] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/29/2014] [Accepted: 01/05/2015] [Indexed: 06/04/2023]
Abstract
In newborn mammals, most of the germ cell population rests in a pool of quiescent small follicles in the ovaries. Regularly throughout adulthood, a small percentage of these oocytes and follicles grows to a certain stage of development and then either degenerates or matures and ovulates. This entire process is under both exogenous and endogenous control. Recent work, including my laboratory's, has clarified that cytokines and glycosaminoglycans are involved as exogenous and endogenous factors in ovarian follicular development, atresia, and maturation in mammals. The present article describes our contribution regarding the cytokines and ovarian glycosaminoglycans that act as intraovarian regulators of follicular development and oogenesis, including oocyte maturation, in mammals.
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Affiliation(s)
- Eimei SATO
- National Livestock Breeding Center, Incorporated Administrative Agency, Fukushima, Japan
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26
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Excess cholesterol induces mouse egg activation and may cause female infertility. Proc Natl Acad Sci U S A 2014; 111:E4972-80. [PMID: 25368174 DOI: 10.1073/pnas.1418954111] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023] Open
Abstract
The HDL receptor scavenger receptor, class B type I (SR-BI) controls the structure and fate of plasma HDL. Female SR-BI KO mice are infertile, apparently because of their abnormal cholesterol-enriched HDL particles. We examined the growth and meiotic progression of SR-BI KO oocytes and found that they underwent normal germinal vesicle breakdown; however, SR-BI KO eggs, which had accumulated excess cholesterol in vivo, spontaneously activated, and they escaped metaphase II (MII) arrest and progressed to pronuclear, MIII, and anaphase/telophase III stages. Eggs from fertile WT mice were activated when loaded in vitro with excess cholesterol by a cholesterol/methyl-β-cyclodextrin complex, phenocopying SR-BI KO oocytes. In vitro cholesterol loading of eggs induced reduction in maturation promoting factor and MAPK activities, elevation of intracellular calcium, extrusion of a second polar body, and progression to meiotic stages beyond MII. These results suggest that the infertility of SR-BI KO females is caused, at least in part, by excess cholesterol in eggs inducing premature activation and that cholesterol can activate WT mouse eggs to escape from MII arrest. Analysis of SR-BI KO female infertility raises the possibility that abnormalities in cholesterol metabolism might underlie some cases of human female infertility of unknown etiology.
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27
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Miyagaki Y, Kanemori Y, Tanaka F, Baba T. Possible role of p38 MAPK-MNK1-EMI2 cascade in metaphase-II arrest of mouse oocytes. Biol Reprod 2014; 91:45. [PMID: 24920040 DOI: 10.1095/biolreprod.113.116962] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023] Open
Abstract
The Mos-MAPK signaling pathway involving the Mos-MEK1/2-ERK1/2-RSK1/2/3 or MSK1-EMI2 cascade is directly linked to metaphase-II arrest of vertebrate oocytes. In this study, we examined whether p38, a member of the MAPK subfamily, is regulated under the control of Mos and contributes to metaphase-II arrest in the mouse oocyte. Morpholino oligonucleotide-mediated depletion of Mos revealed a remarkable decrease in phosphorylation of p38. Simultaneous treatment of oocytes with two chemical inhibitors of p38 and MEK1/2 induced both release from metaphase II and degradation of cyclin B1, whereas the treatment with each of these two inhibitors had little effect. Moreover, phosphorylation of EMI2 was dramatically abolished by addition of the two inhibitors. Indeed, MNK1, a kinase downstream of p38, exhibited the ability to phosphorylate EMI2. These results suggest that in addition to the Mos-MEK1/2 pathway, the Mos-mediated p38 pathway may be implicated in metaphase-II arrest.
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Affiliation(s)
- Yu Miyagaki
- Faculty of Life and Environmental Sciences, University of Tsukuba, Tsukuba Science City, Ibaraki, Japan
| | - Yoshinori Kanemori
- Faculty of Life and Environmental Sciences, University of Tsukuba, Tsukuba Science City, Ibaraki, Japan
| | - Fumi Tanaka
- Faculty of Life and Environmental Sciences, University of Tsukuba, Tsukuba Science City, Ibaraki, Japan
| | - Tadashi Baba
- Faculty of Life and Environmental Sciences, University of Tsukuba, Tsukuba Science City, Ibaraki, Japan Life Science Center of Tsukuba Advanced Research Alliance (TARA), University of Tsukuba, Tsukuba Science City, Ibaraki, Japan
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28
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Zhang J, Cui W, Li Q, Wang TY, Sui HS, Wang JZ, Luo MJ, Tan JH. Mechanisms by which a Lack of Germinal Vesicle (GV) Material Causes Oocyte Meiotic Defects: A Study Using Oocytes Manipulated to Replace GV with Primary Spermatocyte Nuclei1. Biol Reprod 2013; 89:83. [DOI: 10.1095/biolreprod.113.111500] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
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29
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Aoi Y, Arai K, Miyamoto M, Katsuta Y, Yamashita A, Sato M, Yamamoto M. Cuf2 boosts the transcription of APC/C activator Fzr1 to terminate the meiotic division cycle. EMBO Rep 2013; 14:553-60. [PMID: 23628763 DOI: 10.1038/embor.2013.52] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2012] [Revised: 04/01/2013] [Accepted: 04/02/2013] [Indexed: 12/18/2022] Open
Abstract
The number of nuclear divisions in meiosis is strictly limited to two. Although the precise mechanism remains unknown, this seems to be achieved by adjusting the anaphase-promoting complex/cyclosome (APC/C) activity to degrade cyclin. Here, we describe a fission yeast cuf2 mutant that enters into a third nuclear division cycle, represented by ectopic spindle assembly and abnormal chromosome segregation. Cuf2 is a meiotic transcription factor, and its critical target is fzr1(+)/mfr1(+), which encodes a meiotic APC/C activator. fzr1Δ also enters a third nuclear division. Thus, Cuf2 ensures termination of the M-phase cycle by boosting Fzr1 expression to generate functional gametes.
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Affiliation(s)
- Yuki Aoi
- Laboratory of Gene Function, Kazusa DNA Research Institute, 2-6-7 Kazusa-kamatari, Kisarazu, Chiba 292-0818, Japan
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30
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Pomerantz Y, Elbaz J, Ben-Eliezer I, Reizel Y, David Y, Galiani D, Nevo N, Navon A, Dekel N. From ubiquitin-proteasomal degradation to CDK1 inactivation: requirements for the first polar body extrusion in mouse oocytes. FASEB J 2012; 26:4495-505. [PMID: 22859367 DOI: 10.1096/fj.12-209866] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
Completion of the first meiotic division, manifested by extrusion of the first polar body (PBI), depends on proteasomal degradation of cyclin B1 and securin and the subsequent respective CDK1 inactivation and chromosome segregation. We aimed at identifying the polyubiquitin signal that mediates proteasomal action and at a better characterization of the role of CDK1 inactivation at this stage of meiosis. Microinjections of mutated ubiquitin proteins into mouse oocytes revealed that interference with lysine-11 polyubiquitin chains abrogated chromosome segregation and reduced PBI extrusion by 63% as compared to WT ubiquitin-injected controls. Inactivation of CDK1 in oocytes arrested at first metaphase by a proteasome inhibitor fully rescued PBI extrusion. However, removal of CDK1 inhibition failed to allow progression to the second metaphase, rather, inducing PBI reengulfment in 62% of the oocytes. Inhibition of either PLK1 or MEK1/2 during the first anaphase changed spindle dimensions. The PLK1 inhibitor also blocked PBI emission and prevented RhoA translocation. Our results identified lysine-11 rather than the canonic lysine-48 ubiquitin chains as the degradation signal in oocytes resuming meiosis, further disclosing that CDK1 inactivation is necessary and sufficient for PBI emission. This information significantly contributes to our understanding of faulty chromosome segregation that may lead to aneuploidy.
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Affiliation(s)
- Yael Pomerantz
- Department of Biological Regulation, The Weizmann Institute of Science, Rehovot, Israel
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31
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Li J, Mao G, Xia G. FSH modulates PKAI and GPR3 activities in mouse oocyte of COC in a gap junctional communication (GJC)-dependent manner to initiate meiotic resumption. PLoS One 2012; 7:e37835. [PMID: 23028418 PMCID: PMC3441574 DOI: 10.1371/journal.pone.0037835] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2011] [Accepted: 04/24/2012] [Indexed: 11/19/2022] Open
Abstract
Many studies have shown that cyclic adenosine-5′-monophosphate (cAMP)-dependent protein kinase A (PKA) and G-protein-coupled receptor 3 (GPR3) are crucial for controlling meiotic arrest in oocytes. However, it is unclear how gonadotropins modulate these factors to regulate oocyte maturation, especially by gap junctional communication (GJC). Using an in vitro meiosis-arrested mouse cumulus-oocyte complex (COC) culture model, we showed that there is a close relationship between follicle-stimulating hormone (FSH) and the PKA type I (PKAI) and GPR3. The effect of FSH on oocyte maturation was biphasic, initially inhibitory and then stimulatory. During FSH-induced maturation, rapid cAMP surges were observed in both cumulus cells and oocyte. Most GJC between cumulus cells and oocyte ceased immediately after FSH stimulation and recommenced after the cAMP surge. FSH-induced maturation was blocked by PKAI activator 8-AHA-cAMP. Levels of PKAI regulatory subunits and GPR3 decreased and increased, respectively, after FSH stimulation. In the presence of the GJC inhibitor carbenoxolone (CBX), FSH failed to induce the meiotic resumption and the changes in PKAI, GPR3 and cAMP surge in oocyte were no longer detected. Furthermore, GPR3 was upregulated by high cAMP levels, but not by PKAI activation. When applied after FSH stimulation, the specific phosphodiesterase 3A (PDE3A) inhibitor cilostamide immediately blocked meiotic induction, regardless of when it was administered. PKAI activation inhibited mitogen-activated protein kinase (MAPK) phosphorylation in the oocytes of COCs, which participated in the initiation of FSH-induced meiotic maturation in vitro. Just before FSH-induced meiotic maturation, cAMP, PKAI, and GPR3 returned to basal levels, and PDE3A activity and MAPK phosphorylation increased markedly. These experiments show that FSH induces a transient increase in cAMP levels and regulates GJC to control PKAI and GPR3 activities, thereby creating an inhibitory phase. After PDE3A and MAPK activities increase, meiosis resumes.
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Affiliation(s)
| | | | - Guoliang Xia
- State Key Laboratory for Agro-Biotechnology, College of Biological Science, China Agricultural University, Beijing, China
- * E-mail:
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32
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Kong BY, Bernhardt ML, Kim AM, O'Halloran TV, Woodruff TK. Zinc maintains prophase I arrest in mouse oocytes through regulation of the MOS-MAPK pathway. Biol Reprod 2012; 87:11, 1-12. [PMID: 22539682 DOI: 10.1095/biolreprod.112.099390] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022] Open
Abstract
Meiosis in mammalian females is marked by two arrest points, at prophase I and metaphase II, which must be tightly regulated in order to produce a haploid gamete at the time of fertilization. The transition metal zinc has emerged as a necessary and dynamic regulator of the establishment, maintenance, and exit from metaphase II arrest, but the roles of zinc during prophase I arrest are largely unknown. In this study, we investigate the mechanisms of zinc regulation during the first meiotic arrest. Disrupting zinc availability in the prophase I arrested oocyte by treatment with the heavy metal chelator N,N,N',N'-tetrakis-(2-pyridylmethyl)-ethylenediamine (TPEN) causes meiotic resumption even in the presence of pharmacological inhibitors of meiosis. We further show that the MOS-MAPK pathway mediates zinc-dependent prophase I arrest, as the pathway prematurely activates during TPEN-induced meiotic resumption. Conversely, inhibition of the MOS-MAPK pathway maintains prophase I arrest. While prolonged zinc insufficiency ultimately results in telophase I arrest, early and transient exposure of oocytes to TPEN is sufficient to induce meiotic resumption and bypass the telophase I block, allowing the formation of developmentally competent eggs upon parthenogenetic activation. These results establish zinc as a crucial regulator of meiosis throughout the entirety of oocyte maturation, including the maintenance of and release from the first and second meiotic arrest points.
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Affiliation(s)
- Betty Y Kong
- Department of Obstetrics and Gynecology, Feinberg School of Medicine, Northwestern University, Chicago, Illinois 60611, USA
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33
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Kloc M, Ghobrial RM, Borsuk E, Kubiak JZ. Polarity and asymmetry during mouse oogenesis and oocyte maturation. Results Probl Cell Differ 2012; 55:23-44. [PMID: 22918799 DOI: 10.1007/978-3-642-30406-4_2] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Cell polarity and asymmetry play a fundamental role in embryo development. The unequal segregation of determinants, cues, and activities is the major event in the differentiation of cell fate and function in all multicellular organisms. In oocytes, polarity and asymmetry in the distribution of different molecules are prerequisites for the progression and proper outcome of embryonic development. The mouse oocyte, like the oocytes of other mammals, seems to apply a less stringent strategy of polarization than other vertebrates. The mouse embryo undergoes a regulative type of development, which permits the full rectification of development even if the embryo loses up to half of its cells or its size is experimentally doubled during the early stages of embryogenesis. Such pliability is strongly related to the proper oocyte polarization before fertilization. Thus, the molecular mechanisms leading to the development and maintenance of oocyte polarity must be included in any fundamental understanding of the principles of embryo development. In this chapter, we provide an overview of current knowledge regarding the development and maintenance of polarity and asymmetry in the distribution of organelles and molecules in the mouse oocyte. Curiously, the mouse oocyte becomes polarized at least twice during ontogenesis; the question of how this phenomenon is achieved and what role it might play is addressed in this chapter.
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Affiliation(s)
- Malgorzata Kloc
- The Methodist Hospital, Department of Surgery, Houston, TX, USA.
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34
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Chebotareva T, Taylor J, Mullins JJ, Wilmut I. Rat eggs cannot wait: Spontaneous exit from meiotic metaphase-II arrest. Mol Reprod Dev 2011; 78:795-807. [PMID: 21910153 DOI: 10.1002/mrd.21385] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2011] [Accepted: 08/15/2011] [Indexed: 11/06/2022]
Abstract
Mammalian eggs await fertilisation while arrested at the second metaphase stage of meiotic division. A network of signalling pathways enables the establishment and maintenance of this metaphase-II arrest. In the absence of fertilisation, mammalian eggs can spontaneously exit metaphase II when parthenogenetically stimulated, or sometimes without any obvious stimulation. Ovulated rat eggs abortively release from metaphase-II arrest once removed from egg donors. Spontaneously activated rat eggs extrude the second polar body and proceed to the so-called metaphase III-'like' stage, with clumps of condensed chromatin scattered in the egg cytoplasm. It is still unclear what makes rat eggs susceptible to spontaneous activation; however, a vague picture of the signalling pathways involved in the process of spontaneous activation is beginning to emerge. Such cell cycle instability is one of the major reasons why it is more difficult to establish nuclear transfer in the rat. This review examines the known predisposing factors and biochemical mechanisms involved in spontaneous activation. The strategies used to prevent spontaneous metaphase-II release in rat eggs will also be discussed.
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Affiliation(s)
- Tatiana Chebotareva
- MRC Centre for Regenerative Medicine, Edinburgh University, Edinburgh, Scotland, UK.
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35
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Mos in the oocyte: how to use MAPK independently of growth factors and transcription to control meiotic divisions. JOURNAL OF SIGNAL TRANSDUCTION 2010; 2011:350412. [PMID: 21637374 PMCID: PMC3101788 DOI: 10.1155/2011/350412] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/31/2010] [Accepted: 11/01/2010] [Indexed: 01/12/2023]
Abstract
In many cell types, the mitogen-activated protein kinase (MAPK) also named extracellular signal-regulated kinase (ERK) is activated in response to a variety of extracellular growth factor-receptor interactions and leads to the transcriptional activation of immediate early genes, hereby influencing a number of tissue-specific biological activities, as cell proliferation, survival and differentiation. In one specific cell type however, the female germ cell, MAPK does not follow this canonical scheme. In oocytes, MAPK is activated independently of growth factors and tyrosine kinase receptors, acts independently of transcriptional regulation, plays a crucial role in controlling meiotic divisions, and is under the control of a peculiar upstream regulator, the kinase Mos. Mos was originally identified as the transforming gene of Moloney murine sarcoma virus and its cellular homologue was the first proto-oncogene to be molecularly cloned. What could be the specific roles of Mos that render it necessary for meiosis? Which unique functions could explain the evolutionary cost to have selected one gene to only serve for few hours in one very specific cell type? This review discusses the original features of MAPK activation by Mos and the roles of this module in oocytes.
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Bernhardt ML, Kim AM, O'Halloran TV, Woodruff TK. Zinc requirement during meiosis I-meiosis II transition in mouse oocytes is independent of the MOS-MAPK pathway. Biol Reprod 2010; 84:526-36. [PMID: 21076080 DOI: 10.1095/biolreprod.110.086488] [Citation(s) in RCA: 64] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023] Open
Abstract
Zinc is essential for many biological processes, including proper functioning of gametes. We recently reported that zinc levels rise by over 50% during oocyte maturation and that attenuation of zinc availability during this period could be achieved using the membrane-permeable heavy metal chelator N,N,N',N'-tetrakis(2-pyridylmethyl)ethylenediamine (TPEN). This zinc insufficiency resulted in formation of large polar bodies, failure to establish metaphase II arrest, and impaired establishment of cortical polarity. As these phenotypes resemble those of MOS null oocytes, we examined the impact of zinc insufficiency on the MOS-MAPK pathway. Reduced levels of both MOS protein and phosphorylation of MAP2K1/2 are observed in zinc-insufficient oocytes; however, these differences appear only after completion of the first meiotic division. In addition, activation of the downstream effector of the MOS pathway, MAPK3/1, is not affected by zinc insufficiency, and reduced MOS levels are observed only with the presence of TPEN after the first polar body extrusion. These data are inconsistent with the hypothesis that reduced MOS mediates the observed phenotype. Finally, MOS overexpression does not rescue the phenotype of zinc-insufficient oocytes, confirming that the observed disruption of asymmetric division and spindle abnormalities cannot be attributed to impaired MOS signaling. Zinc-insufficient oocytes do not increase maturation promoting factor (MPF) activity following the first meiotic division, and increasing MPF activity through expression of nondegradable cyclin B1 partially rescues the ability of zinc-insufficient oocytes to enter metaphase II. Although we have shown that zinc has a novel role in the meiotic cell cycle, it is not mediated through the MOS-MAPK pathway.
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Affiliation(s)
- Miranda L Bernhardt
- Department of Obstetrics and Gynecology, Feinberg School of Medicine, Northwestern University, Chicago, Illinois, USA
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Abstract
Regulation of maturation in meiotically competent mammalian oocytes is a complex process involving the carefully coordinated exchange of signals between the somatic and germ cell compartments of the ovarian follicle via paracrine and cell-cell coupling pathways. This review highlights recent advances in our understanding of how such signaling controls both meiotic arrest and gonadotropin-triggered meiotic resumption in competent oocytes and relates them to the historical context. Emphasis will be on rodent systems, where many of these new findings have taken place. A regulatory scheme is then proposed that integrates this information into an overall framework for meiotic regulation that demonstrates the complex interplay between different follicular compartments.
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Affiliation(s)
- Stephen M Downs
- Department of Biological Sciences, Marquette University, Milwaukee, Wisconsin 53233, USA.
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Wu YG, Zhou P, Lan GC, Gao D, Li Q, Wei DL, Wang HL, Tan JH. MPF governs the assembly and contraction of actomyosin rings by activating RhoA and MAPK during chemical-induced cytokinesis of goat oocytes. PLoS One 2010; 5:e12706. [PMID: 20856880 PMCID: PMC2938347 DOI: 10.1371/journal.pone.0012706] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2010] [Accepted: 08/19/2010] [Indexed: 01/09/2023] Open
Abstract
The interplay between maturation-promoting factor (MPF), mitogen-activated protein kinase (MAPK) and Rho GTPase during actin-myosin interactions has yet to be determined. The mechanism by which microtubule disrupters induce the formation of ooplasmic protrusion during chemical-assisted enucleation of mammalian oocytes is unknown. Moreover, a suitable model is urgently needed for the study of cytokinesis. We have established a model of chemical-induced cytokinesis and have studied the signaling events leading to cytokinesis using this model. The results suggested that microtubule inhibitors activated MPF, which induced actomyosin assembly (formation of ooplasmic protrusion) by activating RhoA and thus MAPK. While MAPK controlled actin recruitment on its own, MPF promoted myosin enrichment by activating RhoA and MAPK. A further chemical treatment of oocytes with protrusions induced constriction of the actomyosin ring by inactivating MPF while activating RhoA. In conclusion, the present data suggested that the assembly and contraction of the actomyosin ring were two separable steps: while an increase in MPF activity promoted the assembly through RhoA-mediated activation of MAPK, a decrease in MPF activity triggered contraction of the ring by activating RhoA.
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Affiliation(s)
- Yan-Guang Wu
- College of Animal Science and Veterinary Medicine, Shandong Agricultural University, Tai-an City, People's Republic of China
| | - Ping Zhou
- College of Animal Science and Veterinary Medicine, Shandong Agricultural University, Tai-an City, People's Republic of China
| | - Guo-Cheng Lan
- College of Animal Science and Veterinary Medicine, Shandong Agricultural University, Tai-an City, People's Republic of China
| | - Da Gao
- College of Animal Science and Veterinary Medicine, Shandong Agricultural University, Tai-an City, People's Republic of China
| | - Qing Li
- College of Animal Science and Veterinary Medicine, Shandong Agricultural University, Tai-an City, People's Republic of China
| | - De-Li Wei
- College of Animal Science and Veterinary Medicine, Shandong Agricultural University, Tai-an City, People's Republic of China
| | - Hui-Li Wang
- College of Animal Science and Veterinary Medicine, Shandong Agricultural University, Tai-an City, People's Republic of China
| | - Jing-He Tan
- College of Animal Science and Veterinary Medicine, Shandong Agricultural University, Tai-an City, People's Republic of China
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39
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Zinc availability regulates exit from meiosis in maturing mammalian oocytes. Nat Chem Biol 2010; 6:674-81. [PMID: 20693991 PMCID: PMC2924620 DOI: 10.1038/nchembio.419] [Citation(s) in RCA: 175] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2010] [Accepted: 07/08/2010] [Indexed: 01/23/2023]
Abstract
Cellular metal ion fluxes are known in the case of alkali and alkaline earth metals but not well documented for transition metals. Here, we describe major changes in the zinc physiology of the mammalian oocyte as it matures and initiates embryonic development. Single-cell elemental analysis of mouse oocytes by synchrotron-based x-ray fluorescence microscopy (XFM) revealed a 50% increase in total zinc content within the 12-14 hour period of meiotic maturation. Perturbation of zinc homeostasis with a cell-permeable small molecule chelator blocked meiotic progression past telophase I. Zinc supplementation rescued this phenotype when administered prior to this meiotic block. However, following telophase arrest, zinc triggered parthenogenesis, suggesting that exit from this meiotic step is tightly regulated by the availability of a zinc-dependent signal. These results implicate the zinc bolus acquired during meiotic maturation as an important part of the maternal legacy to the embryo.
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40
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Tripathi A, Kumar KVP, Chaube SK. Meiotic cell cycle arrest in mammalian oocytes. J Cell Physiol 2010; 223:592-600. [PMID: 20232297 DOI: 10.1002/jcp.22108] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Meiotic cell cycle in mammalian oocytes is a dynamic process that involves several stop/go channels. The cell cycle arrest in oocyte occurs at various stages such as diplotene, metaphase-I (M-I), metaphase-II (M-II), and so called metaphase-like arrest (M-III). Leutinizing hormone surge induces meiotic resumption from diplotene arrest in follicular microenvironment by overriding several factors responsible for the maintenance of meiotic arrest. The inhibitory factors are synthesized in oocyte or in the associated follicular somatic cells and transferred to the oocyte. The major factors include hypoxanthine, cyclic adenosine 3', 5'-monophosphate, cyclic guanosine 3', 5'-monophosphate, reactive oxygen species, protein kinase A, and protein kinase C. In the presence of active protein kinases, epidermal-like growth factors are produced that activate mitogen-activated protein kinase in cumulus granulosa cells. The maturation promoting factor, cytostatic factors, and spindle assembly checkpoint proteins are also involved in that maintenance of arrest at various stages of meiotic cell cycle in mammalian oocytes. In this review, we briefly summarize the role of these factors in the maintenance of meiotic cell cycle arrest in mammalian oocytes.
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Affiliation(s)
- Anima Tripathi
- Department of Zoology, Banaras Hindu University, Varanasi, India
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41
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Beall S, Brenner C, Segars J. Oocyte maturation failure: a syndrome of bad eggs. Fertil Steril 2010; 94:2507-13. [PMID: 20378111 DOI: 10.1016/j.fertnstert.2010.02.037] [Citation(s) in RCA: 70] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2009] [Revised: 02/15/2010] [Accepted: 02/16/2010] [Indexed: 11/29/2022]
Abstract
To show that disruption of meiotic competence results in cell cycle arrest, and the production of immature oocytes that are not capable of fertilization. Through an extensive review of animal studies and clinical case reports, we define the syndrome of oocyte maturation failure as a distinct oocyte disorder, present a classification system based on clinical parameters, and discuss the potential molecular origins for the disease.
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Affiliation(s)
- Stephanie Beall
- Department of Obstetrics and Gynecology, Vanderbilt University Medical Center, Nashville, Tennessee, USA
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42
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Wang S, Hu J, Guo X, Liu JX, Gao S. ADP-Ribosylation Factor 1 Regulates Asymmetric Cell Division in Female Meiosis in the Mouse1. Biol Reprod 2009; 80:555-62. [DOI: 10.1095/biolreprod.108.073197] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023] Open
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43
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Ito J, Yoon SY, Lee B, Vanderheyden V, Vermassen E, Wojcikiewicz R, Alfandari D, De Smedt H, Parys JB, Fissore RA. Inositol 1,4,5-trisphosphate receptor 1, a widespread Ca2+ channel, is a novel substrate of polo-like kinase 1 in eggs. Dev Biol 2008; 320:402-13. [PMID: 18621368 PMCID: PMC2895400 DOI: 10.1016/j.ydbio.2008.05.548] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2008] [Revised: 05/22/2008] [Accepted: 05/22/2008] [Indexed: 12/16/2022]
Abstract
To initiate embryo development, the sperm induces in the egg release of intracellular calcium ([Ca2+](i)). During oocyte maturation, the inositol 1,4,5-trisphosphate receptor (IP(3)R1), the channel implicated, undergoes modifications that enhance its function. We found that IP(3)R1 becomes phosphorylated during maturation at an MPM-2 epitope and that this persists until the fertilization-associated [Ca2+](i) responses cease. We also reported that maturation without ERK activity diminishes IP(3)R1 MPM-2 reactivity and [Ca2+](i) responses. Here, we show that IP(3)R1 is a novel target for Polo-like kinase1 (Plk1), a conserved M-phase kinase, which phosphorylates it at an MPM-2 epitope. Plk1 and IP(3)R1 interact in an M-phase preferential manner, and they exhibit close co-localization in the spindle/spindle poles area. This co-localization is reduced in the absence of ERK activity, as the ERK pathway regulates spindle organization and IP(3)R1 cortical re-distribution. We propose that IP(3)R1 phosphorylation by Plk1, and possibly by other M-phase kinases, underlies the delivery of spatially and temporally regulated [Ca2+](i) signals during meiosis/mitosis and cytokinesis.
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Affiliation(s)
- Junya Ito
- Department of Veterinary and Animal Sciences, University of Massachusetts, Amherst, MA 01003, USA
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44
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Prasad CK, Mahadevan M, MacNicol MC, MacNicol AM. Mos 3' UTR regulatory differences underlie species-specific temporal patterns of Mos mRNA cytoplasmic polyadenylation and translational recruitment during oocyte maturation. Mol Reprod Dev 2008; 75:1258-68. [PMID: 18246541 DOI: 10.1002/mrd.20877] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
The Mos proto-oncogene is a critical regulator of vertebrate oocyte maturation. The maturation-dependent translation of Mos protein correlates with the cytoplasmic polyadenylation of the maternal Mos mRNA. However, the precise temporal requirements for Mos protein function differ between oocytes of model mammalian species and oocytes of the frog Xenopus laevis. Despite the advances in model organisms, it is not known if the translation of the human Mos mRNA is also regulated by cytoplasmic polyadenylation or what regulatory elements may be involved. We report that the human Mos 3' untranslated region (3' UTR) contains a functional cytoplasmic polyadenylation element (CPE) and demonstrate that the endogenous Mos mRNA undergoes maturation-dependent cytoplasmic polyadenylation in human oocytes. The human Mos 3' UTR interacts with the human CPE-binding protein and exerts translational control on a reporter mRNA in the heterologous Xenopus oocyte system. Unlike the Xenopus Mos mRNA, which is translationally activated by an early acting Musashi/polyadenylation response element (PRE)-directed control mechanism, the translational activation of the human Mos 3' UTR is dependent on a late acting CPE-dependent process. Taken together, our findings suggest a fundamental difference in the 3' UTR regulatory mechanisms controlling the temporal induction of maternal Mos mRNA polyadenylation and translational activation during Xenopus and mammalian oocyte maturation.
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Affiliation(s)
- C Krishna Prasad
- Department of Obstetrics and Gynecology, University of Arkansas for Medical Sciences, Little Rock, Arkansas 72205, USA
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45
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Motola S, Cao X, Popliker M, Tsafriri A. Involvement of mitogen-activated protein kinase (MAPK) pathway in LH- and meiosis-activating sterol (MAS)-induced maturation in rat and mouse oocytes. Mol Reprod Dev 2008; 75:1533-41. [DOI: 10.1002/mrd.20899] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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46
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Pelech S, Jelinkova L, Susor A, Zhang H, Shi X, Pavlok A, Kubelka M, Kovarova H. Antibody Microarray Analyses of Signal Transduction Protein Expression and Phosphorylation during Porcine Oocyte Maturation. J Proteome Res 2008; 7:2860-71. [DOI: 10.1021/pr800082a] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Steven Pelech
- Kinexus Bioinformatics Corporation, Suite 1, 8755 Ash Street, Vancouver, BC, Canada V6P 6T3, Department of Medicine, University of British Columbia, Vancouver, BC, Canada, and Department of Reproductive and Developmental Biology, Institute of Animal Physiology and Genetics, Rumburska 89, Libechov, Czech Republic
| | - Lucie Jelinkova
- Kinexus Bioinformatics Corporation, Suite 1, 8755 Ash Street, Vancouver, BC, Canada V6P 6T3, Department of Medicine, University of British Columbia, Vancouver, BC, Canada, and Department of Reproductive and Developmental Biology, Institute of Animal Physiology and Genetics, Rumburska 89, Libechov, Czech Republic
| | - Andrej Susor
- Kinexus Bioinformatics Corporation, Suite 1, 8755 Ash Street, Vancouver, BC, Canada V6P 6T3, Department of Medicine, University of British Columbia, Vancouver, BC, Canada, and Department of Reproductive and Developmental Biology, Institute of Animal Physiology and Genetics, Rumburska 89, Libechov, Czech Republic
| | - Hong Zhang
- Kinexus Bioinformatics Corporation, Suite 1, 8755 Ash Street, Vancouver, BC, Canada V6P 6T3, Department of Medicine, University of British Columbia, Vancouver, BC, Canada, and Department of Reproductive and Developmental Biology, Institute of Animal Physiology and Genetics, Rumburska 89, Libechov, Czech Republic
| | - Xiaoqing Shi
- Kinexus Bioinformatics Corporation, Suite 1, 8755 Ash Street, Vancouver, BC, Canada V6P 6T3, Department of Medicine, University of British Columbia, Vancouver, BC, Canada, and Department of Reproductive and Developmental Biology, Institute of Animal Physiology and Genetics, Rumburska 89, Libechov, Czech Republic
| | - Antonin Pavlok
- Kinexus Bioinformatics Corporation, Suite 1, 8755 Ash Street, Vancouver, BC, Canada V6P 6T3, Department of Medicine, University of British Columbia, Vancouver, BC, Canada, and Department of Reproductive and Developmental Biology, Institute of Animal Physiology and Genetics, Rumburska 89, Libechov, Czech Republic
| | - Michal Kubelka
- Kinexus Bioinformatics Corporation, Suite 1, 8755 Ash Street, Vancouver, BC, Canada V6P 6T3, Department of Medicine, University of British Columbia, Vancouver, BC, Canada, and Department of Reproductive and Developmental Biology, Institute of Animal Physiology and Genetics, Rumburska 89, Libechov, Czech Republic
| | - Hana Kovarova
- Kinexus Bioinformatics Corporation, Suite 1, 8755 Ash Street, Vancouver, BC, Canada V6P 6T3, Department of Medicine, University of British Columbia, Vancouver, BC, Canada, and Department of Reproductive and Developmental Biology, Institute of Animal Physiology and Genetics, Rumburska 89, Libechov, Czech Republic
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47
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Perry ACF, Verlhac MH. Second meiotic arrest and exit in frogs and mice. EMBO Rep 2008; 9:246-51. [PMID: 18311174 DOI: 10.1038/embor.2008.22] [Citation(s) in RCA: 45] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2008] [Accepted: 01/28/2008] [Indexed: 11/09/2022] Open
Abstract
Mature vertebrate oocytes typically undergo programmed arrest at the second meiotic cell cycle until they are signalled to initiate embryonic development at fertilization. Here, we describe the underlying molecular mechanisms of this second meiotic arrest and release in Xenopus, and compare and contrast them with their counterparts in mice.
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Affiliation(s)
- Anthony C F Perry
- Laboratory of Mammalian Molecular Embryology, RIKEN Center for Developmental Biology, Kobe 650-0047, Japan.
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48
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Ajduk A, Małagocki A, Maleszewski M. Cytoplasmic maturation of mammalian oocytes: development of a mechanism responsible for sperm-induced Ca2+ oscillations. Reprod Biol 2008; 8:3-22. [DOI: 10.1016/s1642-431x(12)60001-1] [Citation(s) in RCA: 59] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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49
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Kubiak JZ, Chesnel F, Richard-Parpaillon L, Bazile F, Pascal A, Polanski Z, Sikora-Polaczek M, Maciejewska Z, Ciemerych MA. Temporal regulation of the first mitosis in Xenopus and mouse embryos. Mol Cell Endocrinol 2008; 282:63-9. [PMID: 18178304 DOI: 10.1016/j.mce.2007.11.023] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
Cell cycle regulation in Eukaryotes is based on common molecular actors and mechanisms. However, the canonical cell cycle is modified in certain cells. Such modifications play a key role in oocyte maturation and embryonic development. They can be achieved either by introduction of new components, pathways, substrates, changed interactions between them, or by elimination of some factors inherited by the cells from previous developmental stages. Here we discuss a particular temporal regulation of the first embryonic M-phase of Xenopus and mouse embryos. These two examples help to understand better the general regulation of M-phase of the cell cycle.
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Affiliation(s)
- Jacek Z Kubiak
- CNRS/University of Rennes 1, Institute of Genetics & Development, UMR 6061, Mitosis & Meiosis Group, Faculty of Medicine, 2 Ave. Prof. Léon Bernard, CS 34317, 35043 Rennes Cedex, France.
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50
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Yoshida N, Amanai M, Fukui T, Kajikawa E, Brahmajosyula M, Iwahori A, Nakano Y, Shoji S, Diebold J, Hessel H, Huss R, Perry ACF. Broad, ectopic expression of the sperm protein PLCZ1 induces parthenogenesis and ovarian tumours in mice. Development 2008; 134:3941-52. [PMID: 17933795 DOI: 10.1242/dev.007930] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Mammalian metaphase II (mII) exit and embryogenesis are induced at fertilisation by a signal thought to come from the sperm protein, phospholipase C-zeta (PLCZ1). Meiotic progression can also be triggered without sperm, as in parthenogenesis, although the classic mouse in vivo parthenogenetic model, LT/Sv, fails in meiosis I owing to an unknown molecular etiology. Here, we dissect PLCZ1 specificity and function in vivo and address its ability to interfere with maternal meiotic exit. Wild-type mouse Plcz1 expression was restricted to post-pubertal testes and the brains of both sexes, with region-specifying elements mapping to a 4.1 kb Plcz1 promoter fragment. When broad ectopic PLCZ1 expression was forced in independent transgenic lines, they initially appeared healthy. Their oocytes underwent unperturbed meiotic maturation to mII but subsequently exhibited autonomous intracellular free calcium oscillations, second polar body extrusion, pronucleus formation and parthenogenetic development. Transfer of transgenic cumulus cell nuclei into wild-type oocytes induced activation and development, demonstrating a direct effect of PLCZ1 analogous to fertilisation. Whereas Plcz1 transgenic males remained largely asymptomatic, females developed abdominal swellings caused by benign ovarian teratomas that were under-represented for paternally- and placentally-expressed transcripts. Plcz1 was not overexpressed in the ovaries of LT/Sv or in human germline ovarian tumours. The narrow spectrum of PLCZ1 activity indicates that it is modulated by tissue-restricted accessory factors. This work characterises a novel model in which parthenogenesis and tumourigenesis follow full meiotic maturation and are linked to fertilisation by PLCZ1.
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Affiliation(s)
- Naoko Yoshida
- Laboratory of Mammalian Molecular Embryology, RIKEN Center for Developmental Biology, 2-2-3 Minatojima Minamimachi, Chuo-ku, Kobe 650-0047, Japan
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