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Zhao Y, Zhang M, Huang X, Liu J, Sun Y, Zhang F, Zhang N, Lei L. Lactate modulates zygotic genome activation through H3K18 lactylation rather than H3K27 acetylation. Cell Mol Life Sci 2024; 81:298. [PMID: 38992327 DOI: 10.1007/s00018-024-05349-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2024] [Revised: 06/24/2024] [Accepted: 07/03/2024] [Indexed: 07/13/2024]
Abstract
In spite of its essential role in culture media, the precise influence of lactate on early mouse embryonic development remains elusive. Previous studies have implicated lactate accumulation in medium affecting histone acetylation. Recent research has underscored lactate-derived histone lactylation as a novel epigenetic modification in diverse cellular processes and diseases. Our investigation demonstrated that the absence of sodium lactate in the medium resulted in a pronounced 2-cell arrest at the late G2 phase in embryos. RNA-seq analysis revealed that the absence of sodium lactate significantly impaired the maternal-to-zygotic transition (MZT), particularly in zygotic gene activation (ZGA). Investigations were conducted employing Cut&Tag assays targeting the well-studied histone acetylation and lactylation sites, H3K18la and H3K27ac, respectively. The findings revealed a noticeable reduction in H3K18la modification under lactate deficiency, and this alteration showed a significant correlation with changes in gene expression. In contrast, H3K27ac exhibited minimal correlation. These results suggest that lactate may preferentially influence early embryonic development through H3K18la rather than H3K27ac modifications.
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Affiliation(s)
- Yanhua Zhao
- Department of Histology and Embryology, Harbin Medical University, Harbin, 150081, China
| | - Meiting Zhang
- Department of Histology and Embryology, Harbin Medical University, Harbin, 150081, China
| | - Xingwei Huang
- Department of Histology and Embryology, Harbin Medical University, Harbin, 150081, China
| | - Jiqiang Liu
- Department of Histology and Embryology, Harbin Medical University, Harbin, 150081, China
| | - Yuchen Sun
- Department of Histology and Embryology, Harbin Medical University, Harbin, 150081, China
| | - Fan Zhang
- Department of Histology and Embryology, Harbin Medical University, Harbin, 150081, China
| | - Na Zhang
- State Key Laboratory of Female Fertility Promotion, Center for Reproductive Medicine, Department of Obstetrics and Gynecology, Peking University Third Hospital, Beijing, China.
- Key Laboratory of Assisted Reproduction (Peking University), Ministry of Education, Beijing, China.
| | - Lei Lei
- Department of Histology and Embryology, Harbin Medical University, Harbin, 150081, China.
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Pham AH, Emori C, Ishikawa-Yamauchi Y, Tokuhiro K, Kamoshita M, Fujihara Y, Ikawa M. Thirteen Ovary-Enriched Genes Are Individually Not Essential for Female Fertility in Mice. Cells 2024; 13:802. [PMID: 38786026 PMCID: PMC11119756 DOI: 10.3390/cells13100802] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2024] [Revised: 05/01/2024] [Accepted: 05/03/2024] [Indexed: 05/25/2024] Open
Abstract
Infertility is considered a global health issue as it currently affects one in every six couples, with female factors reckoned to contribute to partly or solely 50% of all infertility cases. Over a thousand genes are predicted to be highly expressed in the female reproductive system and around 150 genes in the ovary. However, some of their functions in fertility remain to be elucidated. In this study, 13 ovary and/or oocyte-enriched genes (Ccdc58, D930020B18Rik, Elobl, Fbxw15, Oas1h, Nlrp2, Pramel34, Pramel47, Pkd1l2, Sting1, Tspan4, Tubal3, Zar1l) were individually knocked out by the CRISPR/Cas9 system. Mating tests showed that these 13 mutant mouse lines were capable of producing offspring. In addition, we observed the histology section of ovaries and performed in vitro fertilization in five mutant mouse lines. We found no significant anomalies in terms of ovarian development and fertilization ability. In this study, 13 different mutant mouse lines generated by CRISPR/Cas9 genome editing technology revealed that these 13 genes are individually not essential for female fertility in mice.
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Affiliation(s)
- Anh Hoang Pham
- Research Institute for Microbial Diseases, Osaka University, Osaka 565-0871, Japan; (A.H.P.); (C.E.); (M.K.); (Y.F.)
- Graduate School of Pharmaceutical Sciences, Osaka University, Osaka 565-0871, Japan
| | - Chihiro Emori
- Research Institute for Microbial Diseases, Osaka University, Osaka 565-0871, Japan; (A.H.P.); (C.E.); (M.K.); (Y.F.)
| | - Yu Ishikawa-Yamauchi
- Department of Regenerative Medicine, Yokohama City University Graduate School of Medicine, Yokohama 236-0027, Japan;
- The Institute of Medical Science, The University of Tokyo, Tokyo 108-8639, Japan
| | - Keizo Tokuhiro
- Department of Genome Editing, Institute of Biomedical Science, Kansai Medical University, Osaka 573-1191, Japan;
| | - Maki Kamoshita
- Research Institute for Microbial Diseases, Osaka University, Osaka 565-0871, Japan; (A.H.P.); (C.E.); (M.K.); (Y.F.)
| | - Yoshitaka Fujihara
- Research Institute for Microbial Diseases, Osaka University, Osaka 565-0871, Japan; (A.H.P.); (C.E.); (M.K.); (Y.F.)
- Department of Advanced Medical Technologies, National Cerebral and Cardiovascular Center, Osaka 564-8565, Japan
| | - Masahito Ikawa
- Research Institute for Microbial Diseases, Osaka University, Osaka 565-0871, Japan; (A.H.P.); (C.E.); (M.K.); (Y.F.)
- Graduate School of Pharmaceutical Sciences, Osaka University, Osaka 565-0871, Japan
- The Institute of Medical Science, The University of Tokyo, Tokyo 108-8639, Japan
- Center for Infectious Disease Education and Research, Osaka University, Osaka 565-0871, Japan
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3
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Zhang H, Wang Y, Hu Z, Wu Y, Chen N, Zhu Y, Yu Y, Fan H, Wang H. Zygotic Splicing Activation of the Transcriptome is a Crucial Aspect of Maternal-to-Zygotic Transition and Required for the Conversion from Totipotency to Pluripotency. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2024; 11:e2308496. [PMID: 38308190 PMCID: PMC11005748 DOI: 10.1002/advs.202308496] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/07/2023] [Revised: 12/27/2023] [Indexed: 02/04/2024]
Abstract
During maternal-to-zygotic transition (MZT) in the embryo, mRNA undergoes complex post-transcriptional regulatory processes. However, it is unclear whether and how alternative splicing plays a functional role in MZT. By analyzing transcriptome changes in mouse and human early embryos, dynamic changes in alternative splicing during MZT are observed and a previously unnoticed process of zygotic splicing activation (ZSA) following embryonic transcriptional activation is described. As the underlying mechanism of RNA splicing, splicing factors undergo dramatic maternal-to-zygotic conversion. This conversion relies on the key maternal factors BTG4 and PABPN1L and is zygotic-transcription-dependent. CDK11-dependent phosphorylation of the key splicing factor, SF3B1, and its aggregation with SRSF2 in the subnuclear domains of 2-cell embryos are prerequisites for ZSA. Isoforms generated by erroneous splicing, such as full-length Dppa4, hinder normal embryonic development. Moreover, alternative splicing regulates the conversion of early embryonic blastomeres from totipotency to pluripotency, thereby affecting embryonic lineage differentiation. ZSA is an essential post-transcriptional process of MZT and has physiological significance in generating new life. In addition to transcriptional activation, appropriate expression of transcript isoforms is also necessary for preimplantation embryonic development.
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Affiliation(s)
- Hua Zhang
- MOA Key Laboratory of Animal VirologyCenter for Veterinary SciencesZhejiang UniversityHangzhou310058China
- Department of Veterinary MedicineCollege of Animal SciencesZhejiang UniversityHangzhou310058China
| | - Yang Wang
- MOE Key Laboratory for Biosystems Homeostasis and Protection and Innovation Center for Cell Signaling NetworkLife Sciences InstituteZhejiang UniversityHangzhou310058China
| | - Zhe‐Wei Hu
- MOA Key Laboratory of Animal VirologyCenter for Veterinary SciencesZhejiang UniversityHangzhou310058China
| | - Yun‐Wen Wu
- MOE Key Laboratory for Biosystems Homeostasis and Protection and Innovation Center for Cell Signaling NetworkLife Sciences InstituteZhejiang UniversityHangzhou310058China
| | - Nuo Chen
- MOE Key Laboratory for Biosystems Homeostasis and Protection and Innovation Center for Cell Signaling NetworkLife Sciences InstituteZhejiang UniversityHangzhou310058China
| | - Yi‐Min Zhu
- Department of Reproductive EndocrinologyWomen's HospitalSchool of MedicineZhejiang UniversityHangzhouZhejiang310002China
| | - Yuan‐Song Yu
- Savaid Stomatology SchoolHangzhou Medical CollegeHangzhou310053China
| | - Heng‐Yu Fan
- MOE Key Laboratory for Biosystems Homeostasis and Protection and Innovation Center for Cell Signaling NetworkLife Sciences InstituteZhejiang UniversityHangzhou310058China
- Assisted Reproduction UnitDepartment of Obstetrics and GynecologySir Run Run Shaw HospitalSchool of MedicineZhejiang UniversityHangzhou310016China
- Center for Biomedical ResearchShaoxing InstituteZhejiang UniversityShaoxing312000China
| | - Hua‐Nan Wang
- MOA Key Laboratory of Animal VirologyCenter for Veterinary SciencesZhejiang UniversityHangzhou310058China
- Department of Veterinary MedicineCollege of Animal SciencesZhejiang UniversityHangzhou310058China
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4
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Yang G, Xin Q, Dean J. Degradation and translation of maternal mRNA for embryogenesis. Trends Genet 2024; 40:238-249. [PMID: 38262796 DOI: 10.1016/j.tig.2023.12.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2023] [Revised: 12/23/2023] [Accepted: 12/29/2023] [Indexed: 01/25/2024]
Abstract
Maternal mRNAs accumulate during egg growth and must be judiciously degraded or translated to ensure successful development of mammalian embryos. In this review we integrate recent investigations into pathways controlling rapid degradation of maternal mRNAs during the maternal-to-zygotic transition. Degradation is not indiscriminate, and some mRNAs are selectively protected and rapidly translated after fertilization for reprogramming the zygotic genome during early embryogenesis. Oocyte specific cofactors and pathways have been illustrated to control different futures of maternal mRNAs. We discuss mechanisms that control the fate of maternal mRNAs during late oogenesis and after fertilization. Issues to be resolved in current maternal mRNA research are described, and future research directions are proposed.
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Affiliation(s)
- Guanghui Yang
- Laboratory of Cellular and Developmental Biology, NIDDK, National Institutes of Health, Bethesda, MD 20892, USA.
| | - Qiliang Xin
- Laboratory of Cellular and Developmental Biology, NIDDK, National Institutes of Health, Bethesda, MD 20892, USA
| | - Jurrien Dean
- Laboratory of Cellular and Developmental Biology, NIDDK, National Institutes of Health, Bethesda, MD 20892, USA.
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Lee K, Cho K, Morey R, Cook-Andersen H. An extended wave of global mRNA deadenylation sets up a switch in translation regulation across the mammalian oocyte-to-embryo transition. Cell Rep 2024; 43:113710. [PMID: 38306272 PMCID: PMC11034814 DOI: 10.1016/j.celrep.2024.113710] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2023] [Revised: 09/18/2023] [Accepted: 01/11/2024] [Indexed: 02/04/2024] Open
Abstract
Without new transcription, gene expression across the oocyte-to-embryo transition (OET) relies instead on regulation of mRNA poly(A) tails to control translation. However, how tail dynamics shape translation across the OET in mammals remains unclear. We perform long-read RNA sequencing to uncover poly(A) tail lengths across the mouse OET and, incorporating published ribosome profiling data, provide an integrated, transcriptome-wide analysis of poly(A) tails and translation across the entire transition. We uncover an extended wave of global deadenylation during fertilization in which short-tailed, oocyte-deposited mRNAs are translationally activated without polyadenylation through resistance to deadenylation. Subsequently, in the embryo, mRNAs are readenylated and translated in a surge of global polyadenylation. We further identify regulation of poly(A) tail length at the isoform level and stage-specific enrichment of mRNA sequence motifs among regulated transcripts. These data provide insight into the stage-specific mechanisms of poly(A) tail regulation that orchestrate gene expression from oocyte to embryo in mammals.
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Affiliation(s)
- Katherine Lee
- Department of Molecular Biology, University of California, San Diego, La Jolla, CA 92093, USA
| | - Kyucheol Cho
- Department of Obstetrics, Gynecology, and Reproductive Sciences, School of Medicine, University of California, San Diego, La Jolla, CA 92093, USA
| | - Robert Morey
- Department of Pathology, School of Medicine, University of California, San Diego, La Jolla, CA 92093, USA
| | - Heidi Cook-Andersen
- Department of Obstetrics, Gynecology, and Reproductive Sciences, School of Medicine, University of California, San Diego, La Jolla, CA 92093, USA; Department of Molecular Biology, University of California, San Diego, La Jolla, CA 92093, USA.
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6
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Emori C, Kodani M, Abbasi F, Mori M, Ikawa M. PABPN1L is required for maternal mRNA degradation after meiosis resumption. J Reprod Dev 2024; 70:10-17. [PMID: 38057116 PMCID: PMC10902638 DOI: 10.1262/jrd.2023-077] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/08/2023] Open
Abstract
Poly(A)-binding proteins (PABPs) play roles in mRNA maturation, translational activity, and decay. The functions of PABPs, especially PABPN1 and PABPC1, in somatic cells have been well-studied. However, little is known about the roles of PABPs in oocytes because of the unique mechanisms of mRNA metabolism in oocytes. This study focused on PABPN1L and generated Pabpn1l knockout (KO) mice using the CRISPR/Cas9 system. After mating tests, we found that Pabpn1l KO females were infertile due to the failure of the embryos to develop to the 4-cell stage. RNA-seq analysis revealed aberrant mRNA persistence in Pabpn1l KO-MII oocytes, which indicates impaired mRNA degradation during the germinal vesicle (GV) to MII transition. We also revealed that the exogenous expression of Pabpn1l mRNA in KO-GV oocytes recovered defects of embryonic development. PABPN1L is partly indispensable for female fertility in mice, owing to its necessity for embryonic development, which is supported by mRNA degradation during GV to MII maturation.
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Affiliation(s)
- Chihiro Emori
- Research Institute for Microbial Diseases, Osaka University, Osaka 565-0871, Japan
| | - Mayo Kodani
- Research Institute for Microbial Diseases, Osaka University, Osaka 565-0871, Japan
- Graduate School of Pharmaceutical Sciences, Osaka University, Osaka 565-0871, Japan
| | - Ferheen Abbasi
- Research Institute for Microbial Diseases, Osaka University, Osaka 565-0871, Japan
- Graduate School of Medicine, Osaka University, Osaka 565-0871, Japan
| | - Masashi Mori
- Research Institute for Microbial Diseases, Osaka University, Osaka 565-0871, Japan
| | - Masahito Ikawa
- Research Institute for Microbial Diseases, Osaka University, Osaka 565-0871, Japan
- Graduate School of Pharmaceutical Sciences, Osaka University, Osaka 565-0871, Japan
- Immunology Frontier Research Center, Osaka University, Osaka 565-0871, Japan
- The Institute of Medical Science, The University of Tokyo, Tokyo 108-8639, Japan
- Center for Infectious Disease Education and Research (CiDER), Osaka University, Osaka 565-0871, Japan
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7
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Wang X, Zhou R, Lu X, Dai S, Liu M, Jiang C, Yang Y, Shen Y, Wang Y, Liu H. Identification of nonfunctional PABPC1L causing oocyte maturation abnormalities and early embryonic arrest in female primary infertility. Clin Genet 2023; 104:648-658. [PMID: 37723834 DOI: 10.1111/cge.14425] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2023] [Revised: 08/10/2023] [Accepted: 09/04/2023] [Indexed: 09/20/2023]
Abstract
Oocyte maturation arrest, fertilization failure, and early embryonic arrest are important causes of female infertility, whereas the genetic events that contribute to these processes are largely unknown. Loss-of-function of PABPC1L in mice has been suggested to cause female infertility involved in the absence of mature oocytes or embryos in vivo or in vitro. However, the role of PABPC1L in human female reproduction remains largely elusive. In this study, we identified a homozygous missense mutation (c.536G>A, p.R179Q) and a compound heterozygous mutation (c.793C>T, p.R265W; c.1201C>T, p.Q401*) in PABPC1L in two unrelated infertile females characterized by recurrent oocyte maturation abnormalities and early embryonic arrest. These variants resulted in nonfunctional PABPC1L protein and were associated with impaired chromatin configuration and transcriptional silencing in GV oocytes. Moreover, the binding capacity of mutant PABPC1L to mRNAs related to oocyte maturation and early embryonic development was decreased significantly. Our findings revealed novel PABPC1L mutations causing oocyte maturation abnormalities and early embryonic arrest, confirming the essential role of PABPC1L in human female fertility.
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Affiliation(s)
- Xiang Wang
- Department of Obstetrics/Gynecology, Key Laboratory of Obstetric, Gynecologic and Pediatric Diseases and Birth Defects of Ministry of Education, West China Second University Hospital, Sichuan University, Chengdu, China
| | - Ruixi Zhou
- Department of Pediatrics, West China Second University Hospital, Sichuan University, Chengdu, China
| | - Xiaowei Lu
- Reproductive Medicine Centre, Xinhua Hospital Affiliated to Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Siyu Dai
- Department of Obstetrics/Gynecology, Key Laboratory of Obstetric, Gynecologic and Pediatric Diseases and Birth Defects of Ministry of Education, West China Second University Hospital, Sichuan University, Chengdu, China
| | - Mohan Liu
- Department of Obstetrics/Gynecology, Key Laboratory of Obstetric, Gynecologic and Pediatric Diseases and Birth Defects of Ministry of Education, West China Second University Hospital, Sichuan University, Chengdu, China
| | - Chuan Jiang
- Department of Obstetrics/Gynecology, Key Laboratory of Obstetric, Gynecologic and Pediatric Diseases and Birth Defects of Ministry of Education, West China Second University Hospital, Sichuan University, Chengdu, China
| | - Yanting Yang
- Medical Genetics Department/Prenatal Diagnostic Center, West China Second University Hospital, Sichuan University, Chengdu, China
| | - Ying Shen
- Department of Obstetrics/Gynecology, Key Laboratory of Obstetric, Gynecologic and Pediatric Diseases and Birth Defects of Ministry of Education, West China Second University Hospital, Sichuan University, Chengdu, China
- NHC Key Laboratory of Chronobiology, Sichuan University, Chengdu, China
| | - Yan Wang
- Center for Reproductive Medicine, Department of Obstetrics and Gynecology, West China Second University Hospital, Sichuan University, Chengdu, China
| | - Hanmin Liu
- NHC Key Laboratory of Chronobiology, Sichuan University, Chengdu, China
- Department of Pediatric Pulmonology and Immunology, West China Second University Hospital, Sichuan University, Chengdu, China
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Markitantova Y, Fokin A, Boguslavsky D, Simirskii V, Kulikov A. Molecular Signatures Integral to Natural Reprogramming in the Pigment Epithelium Cells after Retinal Detachment in Pleurodeles waltl. Int J Mol Sci 2023; 24:16940. [PMID: 38069262 PMCID: PMC10707686 DOI: 10.3390/ijms242316940] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2023] [Revised: 11/20/2023] [Accepted: 11/21/2023] [Indexed: 12/18/2023] Open
Abstract
The reprogramming of retinal pigment epithelium (RPE) cells into retinal cells (transdifferentiation) lies in the bases of retinal regeneration in several Urodela. The identification of the key genes involved in this process helps with looking for approaches to the prevention and treatment of RPE-related degenerative diseases of the human retina. The purpose of our study was to examine the transcriptome changes at initial stages of RPE cell reprogramming in adult newt Pleurodeles waltl. RPE was isolated from the eye samples of day 0, 4, and 7 after experimental surgical detachment of the neural retina and was used for a de novo transcriptome assembly through the RNA-Seq method. A total of 1019 transcripts corresponding to the differently expressed genes have been revealed in silico: the 83 increased the expression at an early stage, and 168 increased the expression at a late stage of RPE reprogramming. We have identified up-regulation of classical early response genes, chaperones and co-chaperones, genes involved in the regulation of protein biosynthesis, suppressors of oncogenes, and EMT-related genes. We revealed the growth in the proportion of down-regulated ribosomal and translation-associated genes. Our findings contribute to revealing the molecular mechanism of RPE reprogramming in Urodela.
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Affiliation(s)
| | | | | | - Vladimir Simirskii
- Koltsov Institute of Developmental Biology, Russian Academy of Sciences, 119334 Moscow, Russia; (Y.M.); (A.K.)
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Huang L, Li G, Du C, Jia Y, Yang J, Fan W, Xu Y, Cheng H, Zhou Y. The polyA tail facilitates splicing of last introns with weak 3' splice sites via PABPN1. EMBO Rep 2023; 24:e57128. [PMID: 37661812 PMCID: PMC10561182 DOI: 10.15252/embr.202357128] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2023] [Revised: 08/04/2023] [Accepted: 08/16/2023] [Indexed: 09/05/2023] Open
Abstract
The polyA tail of mRNAs is important for many aspects of RNA metabolism. However, whether and how it regulates pre-mRNA splicing is still unknown. Here, we report that the polyA tail acts as a splicing enhancer for the last intron via the nuclear polyA binding protein PABPN1 in HeLa cells. PABPN1-depletion induces the retention of a group of introns with a weaker 3' splice site, and they show a strong 3'-end bias and mainly locate in nuclear speckles. The polyA tail is essential for PABPN1-enhanced last intron splicing and functions in a length-dependent manner. Tethering PABPN1 to nonpolyadenylated transcripts also promotes splicing, suggesting a direct role for PABPN1 in splicing regulation. Using TurboID-MS, we construct the PABPN1 interactome, including many spliceosomal and RNA-binding proteins. Specifically, PABPN1 can recruit RBM26&27 to promote splicing by interacting with the coiled-coil and RRM domain of RBM27. PABPN1-regulated terminal intron splicing is conserved in mice. Together, our study establishes a novel mode of post-transcriptional splicing regulation via the polyA tail and PABPN1.
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Affiliation(s)
- Li Huang
- College of Life Sciences, TaiKang Center for Life and Medical Sciences, RNA InstituteWuhan UniversityWuhanChina
| | - Guangnan Li
- College of Life Sciences, TaiKang Center for Life and Medical Sciences, RNA InstituteWuhan UniversityWuhanChina
| | - Chen Du
- College of Life Sciences, TaiKang Center for Life and Medical Sciences, RNA InstituteWuhan UniversityWuhanChina
| | - Yu Jia
- College of Life Sciences, TaiKang Center for Life and Medical Sciences, RNA InstituteWuhan UniversityWuhanChina
| | - Jiayi Yang
- College of Life Sciences, TaiKang Center for Life and Medical Sciences, RNA InstituteWuhan UniversityWuhanChina
| | - Weiliang Fan
- College of Life Sciences, TaiKang Center for Life and Medical Sciences, RNA InstituteWuhan UniversityWuhanChina
| | - Yong‐Zhen Xu
- College of Life Sciences, TaiKang Center for Life and Medical Sciences, RNA InstituteWuhan UniversityWuhanChina
| | - Hong Cheng
- Key Laboratory of RNA Science and Engineering, Chinese Academy of Sciences, Shanghai Institute of Biochemistry and Cell Biology, Center for Excellence in Molecular Cell Science, Chinese Academy of SciencesUniversity of Chinese Academy of SciencesShanghaiChina
| | - Yu Zhou
- College of Life Sciences, TaiKang Center for Life and Medical Sciences, RNA InstituteWuhan UniversityWuhanChina
- Frontier Science Center for Immunology and MetabolismWuhan UniversityWuhanChina
- Institute of Advanced StudiesWuhan UniversityWuhanChina
- State Key Laboratory of VirologyWuhan UniversityWuhanChina
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10
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Zhou C, Zheng L, Teng H, Yang Y, Ma R, Wang S, Yang Y, Jing J, Li M, Wu R, Chen L, Yao B. Maternal RNA binding protein with multiple splicing 2 (RBPMS2) is involved in mouse blastocyst formation through the bone morphogenetic protein pathway. Reprod Biomed Online 2023; 47:103238. [PMID: 37573751 DOI: 10.1016/j.rbmo.2023.05.010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2022] [Revised: 04/24/2023] [Accepted: 05/18/2023] [Indexed: 08/15/2023]
Abstract
RESEARCH QUESTION Is early embryo development in mice influenced by RNA binding protein with multiple splicing 2 (RBPMS2), a maternal factor that accumulates and is stored in the cytoplasm of mature oocytes? DESIGN The expression patterns of RBPMS2 in mouse were analysed using quantitative real-time PCR (qRT PCR) and immunofluorescence staining. The effect of knockdown of RBPMS2 on embryo development was evaluated through a microinjection of specific morpholino or small interfering RNA. RNA sequencing was performed for mechanistic analysis. The interaction between RBPMS2 and the bone morphogenetic protein (BMP) pathway was studied using BMP inhibitor and activator. The effect on the localization of E-cadherin was determined by immunofluorescence staining. RESULTS Maternal protein RBPMS2 is highly expressed in mouse oocytes, and knockdown of RBPMS2 inhibits embryo development from the morula to the blastocyst stage. Mechanistically, RNA sequencing showed that the differentially expressed genes were enriched in the transforming growth factor-β (TGF-β) signalling pathway. BMPs are members of the TGF-β superfamily of growth factors. It was found that the addition of BMP inhibitor to the culture medium led to a morula-stage arrest, similar to that seen in RBPMS2 knockdown embryos. This morula-stage arrest defect caused by RBPMS2 knockdown was partially rescued by BMP activator. Furthermore, the localization of E-cadherin to the membrane was impaired in response to a knockdown of RBPMS2 or inhibition of the BMP pathway. CONCLUSION This study suggests that RBPMS2 activates the BMP pathway and thus influences the localization of E-cadherin, which is important for early mouse embryo development during blastocyst formation.
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Affiliation(s)
- Cheng Zhou
- State Key Laboratory of Reproductive Medicine, Affiliated Jinling Hospital, Nanjing Medical University, Nanjing, China
| | - Lu Zheng
- Department of Reproductive Medicine, Affiliated Jinling Hospital, Medicine School of Nanjing University, Nanjing, China
| | - Hui Teng
- State Key Laboratory of Reproductive Medicine, Affiliated Jinling Hospital, Nanjing Medical University, Nanjing, China
| | - Ye Yang
- Department of Reproduction, Obstetrics and Gynaecology Hospital Affiliated to Nanjing Medical University, Nanjing, China
| | - Rujun Ma
- Department of Reproductive Medicine, Affiliated Jinling Hospital, Medicine School of Nanjing University, Nanjing, China
| | - Shuxian Wang
- Department of Reproductive Medicine, Affiliated Jinling Hospital, Medicine School of Nanjing University, Nanjing, China
| | - Yang Yang
- Basic Medical Laboratory, Affiliated Jinling Hospital, Nanjing Medical University, Nanjing, China
| | - Jun Jing
- Department of Reproductive Medicine, Affiliated Jinling Hospital, Medicine School of Nanjing University, Nanjing, China
| | - Meiling Li
- Department of Reproductive Medicine, Affiliated Jinling Hospital, Medicine School of Nanjing University, Nanjing, China
| | - Ronghua Wu
- Department of Reproductive Medicine, Affiliated Jinling Hospital, Medicine School of Nanjing University, Nanjing, China
| | - Li Chen
- Department of Reproductive Medicine, Affiliated Jinling Hospital, Medicine School of Nanjing University, Nanjing, China..
| | - Bing Yao
- State Key Laboratory of Reproductive Medicine, Affiliated Jinling Hospital, Nanjing Medical University, Nanjing, China..
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11
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Chen Y, Wang L, Guo F, Dai X, Zhang X. Epigenetic reprogramming during the maternal-to-zygotic transition. MedComm (Beijing) 2023; 4:e331. [PMID: 37547174 PMCID: PMC10397483 DOI: 10.1002/mco2.331] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2023] [Revised: 06/19/2023] [Accepted: 06/21/2023] [Indexed: 08/08/2023] Open
Abstract
After fertilization, sperm and oocyte fused and gave rise to a zygote which is the beginning of a new life. Then the embryonic development is monitored and regulated precisely from the transition of oocyte to the embryo at the early stage of embryogenesis, and this process is termed maternal-to-zygotic transition (MZT). MZT involves two major events that are maternal components degradation and zygotic genome activation. The epigenetic reprogramming plays crucial roles in regulating the process of MZT and supervising the normal development of early development of embryos. In recent years, benefited from the rapid development of low-input epigenome profiling technologies, new epigenetic modifications are found to be reprogrammed dramatically and may play different roles during MZT whose dysregulation will cause an abnormal development of embryos even abortion at various stages. In this review, we summarized and discussed the important novel findings on epigenetic reprogramming and the underlying molecular mechanisms regulating MZT in mammalian embryos. Our work provided comprehensive and detailed references for the in deep understanding of epigenetic regulatory network in this key biological process and also shed light on the critical roles for epigenetic reprogramming on embryonic failure during artificial reproductive technology and nature fertilization.
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Affiliation(s)
- Yurong Chen
- Key Laboratory of Organ Regeneration and Transplantation of Ministry of Education First Hospital of Jilin University Changchun China
- National-Local Joint Engineering Laboratory of Animal Models for Human Disease First Hospital of Jilin University Changchun China
| | - Luyao Wang
- Key Laboratory of Organ Regeneration and Transplantation of Ministry of Education First Hospital of Jilin University Changchun China
- National-Local Joint Engineering Laboratory of Animal Models for Human Disease First Hospital of Jilin University Changchun China
| | - Fucheng Guo
- Key Laboratory of Organ Regeneration and Transplantation of Ministry of Education First Hospital of Jilin University Changchun China
- National-Local Joint Engineering Laboratory of Animal Models for Human Disease First Hospital of Jilin University Changchun China
| | - Xiangpeng Dai
- Key Laboratory of Organ Regeneration and Transplantation of Ministry of Education First Hospital of Jilin University Changchun China
- National-Local Joint Engineering Laboratory of Animal Models for Human Disease First Hospital of Jilin University Changchun China
| | - Xiaoling Zhang
- Key Laboratory of Organ Regeneration and Transplantation of Ministry of Education First Hospital of Jilin University Changchun China
- National-Local Joint Engineering Laboratory of Animal Models for Human Disease First Hospital of Jilin University Changchun China
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12
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Wang Y, Qin Q, Yang Y, Dong S, Liu Y, Wang M, Zou Y, Gong Y, Zhou H, Jiang B. A novel homozygous C-terminal deletion in BTG4 causes zygotic cleavage failure and female infertility. J Assist Reprod Genet 2023; 40:75-81. [PMID: 36471203 PMCID: PMC9840730 DOI: 10.1007/s10815-022-02664-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2022] [Accepted: 11/17/2022] [Indexed: 12/12/2022] Open
Abstract
PURPOSE We aimed to identify pathogenic variants in a female patient with primary infertility and recurrent failure of in vitro fertilization with zygotic cleavage failure. METHODS The genomic DNA from the affected individual was subjected to whole-exome sequencing and the variant was confirmed by Sanger sequencing. The functional effect of the identified variant was further investigated in 293 T cells. RESULTS We identified a novel homozygous deletion in BTG4 (c.580_616del) in the affected individual. The deletion results in frameshift and replacement of the last 29 residues (aa195-223) with 66 random amino acids. The mutated amino acid residues are highly conserved among mammalian species. Co-immunoprecipitation in 293 T cells showed that the mutation abolished the interaction between BTG4 and PABPN1L. CONCLUSION This study conforms previous studies and expands the mutational spectrum of BTG4. Our findings prove the functional importance of the C-terminal of BTG4. BTG4 is a potential diagnostic and therapeutic target for patients suffering from zygotic cleavage failure.
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Affiliation(s)
- Yufeng Wang
- The Key Laboratory of Experimental Teratology of the Ministry of Education and Department of Genetics, School of Basic Medical Sciences, Cheeloo College of Medicine, Shandong University, Jinan, 250012, China
| | - Qingtao Qin
- The Key Laboratory of Experimental Teratology of the Ministry of Education and Department of Genetics, School of Basic Medical Sciences, Cheeloo College of Medicine, Shandong University, Jinan, 250012, China
| | - Yang Yang
- Center for Reproductive Medicine, Department of Obstetrics and Gynecology, Qilu Hospital, Cheeloo College of Medicine, Shandong University, Jinan, 250012, China
| | - Shan Dong
- Center for Reproductive Medicine, Department of Obstetrics and Gynecology, Qilu Hospital, Cheeloo College of Medicine, Shandong University, Jinan, 250012, China
| | - Yuting Liu
- The Key Laboratory of Experimental Teratology of the Ministry of Education and Department of Genetics, School of Basic Medical Sciences, Cheeloo College of Medicine, Shandong University, Jinan, 250012, China
| | - Molin Wang
- The Key Laboratory of Experimental Teratology of the Ministry of Education and Department of Genetics, School of Basic Medical Sciences, Cheeloo College of Medicine, Shandong University, Jinan, 250012, China
| | - Yongxin Zou
- The Key Laboratory of Experimental Teratology of the Ministry of Education and Department of Genetics, School of Basic Medical Sciences, Cheeloo College of Medicine, Shandong University, Jinan, 250012, China
| | - Yaoqin Gong
- The Key Laboratory of Experimental Teratology of the Ministry of Education and Department of Genetics, School of Basic Medical Sciences, Cheeloo College of Medicine, Shandong University, Jinan, 250012, China
| | - Haibin Zhou
- Center for Reproductive Medicine, Department of Obstetrics and Gynecology, Qilu Hospital, Cheeloo College of Medicine, Shandong University, Jinan, 250012, China.
| | - Baichun Jiang
- The Key Laboratory of Experimental Teratology of the Ministry of Education and Department of Genetics, School of Basic Medical Sciences, Cheeloo College of Medicine, Shandong University, Jinan, 250012, China.
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13
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Deng M, Wang X, Xiong Z, Tang P. Control of RNA degradation in cell fate decision. Front Cell Dev Biol 2023; 11:1164546. [PMID: 37025171 PMCID: PMC10070868 DOI: 10.3389/fcell.2023.1164546] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2023] [Accepted: 03/03/2023] [Indexed: 04/08/2023] Open
Abstract
Cell fate is shaped by a unique gene expression program, which reflects the concerted action of multilayered precise regulation. Substantial research attention has been paid to the contribution of RNA biogenesis to cell fate decisions. However, increasing evidence shows that RNA degradation, well known for its function in RNA processing and the surveillance of aberrant transcripts, is broadly engaged in cell fate decisions, such as maternal-to-zygotic transition (MZT), stem cell differentiation, or somatic cell reprogramming. In this review, we first look at the diverse RNA degradation pathways in the cytoplasm and nucleus. Then, we summarize how selective transcript clearance is regulated and integrated into the gene expression regulation network for the establishment, maintenance, and exit from a special cellular state.
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Affiliation(s)
- Mingqiang Deng
- Center for Cell Lineage and Development, Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, Guangzhou, China
- Key Laboratory of Biological Targeting Diagnosis, Therapy and Rehabilitation of Guangdong Higher Education Institutes, The Fifth Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
| | - Xiwei Wang
- Guangzhou Laboratory, Guangzhou, Guangdong, China
| | - Zhi Xiong
- Center for Cell Lineage and Development, Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, Guangzhou, China
- Bioland Laboratory (Guangzhou Regenerative Medicine and Health GuangDong Laboratory), Guangzhou, China
| | - Peng Tang
- Center for Cell Lineage and Development, Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, Guangzhou, China
- *Correspondence: Peng Tang,
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14
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Sun H, Sun G, Zhang H, An H, Guo Y, Ge J, Han L, Zhu S, Tang S, Li C, Xu C, Guo X, Wang Q. Proteomic Profiling Reveals the Molecular Control of Oocyte Maturation. Mol Cell Proteomics 2022; 22:100481. [PMID: 36496143 PMCID: PMC9823227 DOI: 10.1016/j.mcpro.2022.100481] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2022] [Revised: 10/31/2022] [Accepted: 12/04/2022] [Indexed: 12/13/2022] Open
Abstract
Meiotic maturation is an intricate and precisely regulated process orchestrated by various pathways and numerous proteins. However, little is known about the proteome landscape during oocytes maturation. Here, we obtained the temporal proteomic profiles of mouse oocytes during in vivo maturation. We successfully quantified 4694 proteins from 4500 oocytes in three key stages (germinal vesicle, germinal vesicle breakdown, and metaphase II). In particular, we discovered the novel proteomic features during oocyte maturation, such as the active Skp1-Cullin-Fbox pathway and an increase in mRNA decay-related proteins. Using functional approaches, we further identified the key factors controlling the histone acetylation state in oocytes and the vital proteins modulating meiotic cell cycle. Taken together, our data serve as a broad resource on the dynamics occurring in oocyte proteome and provide important knowledge to better understand the molecular mechanisms during germ cell development.
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Affiliation(s)
- Hongzheng Sun
- State Key Laboratory of Reproductive Medicine, Suzhou Municipal Hospital, Nanjing Medical University, Nanjing, China
| | - Guangyi Sun
- State Key Laboratory of Reproductive Medicine, Suzhou Municipal Hospital, Nanjing Medical University, Nanjing, China
| | - Haotian Zhang
- State Key Laboratory of Reproductive Medicine, Suzhou Municipal Hospital, Nanjing Medical University, Nanjing, China
| | - Huiqing An
- State Key Laboratory of Reproductive Medicine, Suzhou Municipal Hospital, Nanjing Medical University, Nanjing, China
| | - Yueshuai Guo
- State Key Laboratory of Reproductive Medicine, Suzhou Municipal Hospital, Nanjing Medical University, Nanjing, China
| | - Juan Ge
- State Key Laboratory of Reproductive Medicine, Suzhou Municipal Hospital, Nanjing Medical University, Nanjing, China
| | - Longsen Han
- State Key Laboratory of Reproductive Medicine, Suzhou Municipal Hospital, Nanjing Medical University, Nanjing, China
| | - Shuai Zhu
- State Key Laboratory of Reproductive Medicine, Suzhou Municipal Hospital, Nanjing Medical University, Nanjing, China
| | - Shoubin Tang
- State Key Laboratory of Reproductive Medicine, Suzhou Municipal Hospital, Nanjing Medical University, Nanjing, China
| | - Congyang Li
- State Key Laboratory of Reproductive Medicine, Suzhou Municipal Hospital, Nanjing Medical University, Nanjing, China
| | - Chen Xu
- State Key Laboratory of Reproductive Medicine, Suzhou Municipal Hospital, Nanjing Medical University, Nanjing, China
| | - Xuejiang Guo
- State Key Laboratory of Reproductive Medicine, Suzhou Municipal Hospital, Nanjing Medical University, Nanjing, China; Department of Histology and Embryology, Nanjing Medical University, Nanjing, China.
| | - Qiang Wang
- State Key Laboratory of Reproductive Medicine, Suzhou Municipal Hospital, Nanjing Medical University, Nanjing, China; Center for Global Health, School of Public Health, Nanjing Medical University, Nanjing, China.
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15
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Mu J, Zhou Z, Sang Q, Wang L. The physiological and pathological mechanisms of early embryonic development. FUNDAMENTAL RESEARCH 2022; 2:859-872. [PMID: 38933386 PMCID: PMC11197659 DOI: 10.1016/j.fmre.2022.08.011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2022] [Revised: 08/05/2022] [Accepted: 08/19/2022] [Indexed: 10/15/2022] Open
Abstract
Early embryonic development is a complex process. The zygote undergoes several rounds of division to form a blastocyst, and during this process, the zygote undergoes the maternal-to-zygotic transition to gain control of embryonic development and makes two cell fate decisions to differentiate into an embryonic and two extra-embryonic lineages. With the use of new molecular biotechnologies and animal models, we can now further study the molecular mechanisms of early embryonic development and the pathological causes of early embryonic arrest. Here, we first summarize the known molecular regulatory mechanisms of early embryonic development in mice. Then we discuss the pathological factors leading to the early embryonic arrest. We hope that this review will give researchers a relatively complete view of the physiology and pathology of early embryonic development.
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Affiliation(s)
- Jian Mu
- The State Key Laboratory of Genetic Engineering, Institute of Pediatrics, Children's Hospital of Fudan University, The Institutes of Biomedical Sciences, Fudan University, Shanghai 200032, China
| | - Zhou Zhou
- The State Key Laboratory of Genetic Engineering, Institute of Pediatrics, Children's Hospital of Fudan University, The Institutes of Biomedical Sciences, Fudan University, Shanghai 200032, China
- NHC Key Lab of Reproduction Regulation, Shanghai Institute for Biomedical and Pharmaceutical Technologies, Shanghai 200032, China
| | - Qing Sang
- The State Key Laboratory of Genetic Engineering, Institute of Pediatrics, Children's Hospital of Fudan University, The Institutes of Biomedical Sciences, Fudan University, Shanghai 200032, China
| | - Lei Wang
- The State Key Laboratory of Genetic Engineering, Institute of Pediatrics, Children's Hospital of Fudan University, The Institutes of Biomedical Sciences, Fudan University, Shanghai 200032, China
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16
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Dai XX, Pi SB, Zhao LW, Wu YW, Shen JL, Zhang SY, Sha QQ, Fan HY. PABPN1 functions as a hub in the assembly of nuclear poly(A) domains that are essential for mouse oocyte development. SCIENCE ADVANCES 2022; 8:eabn9016. [PMID: 36306357 PMCID: PMC9616507 DOI: 10.1126/sciadv.abn9016] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/29/2021] [Accepted: 09/12/2022] [Indexed: 06/16/2023]
Abstract
Growing oocytes store a large amount of maternal mRNA to support the subsequent "maternal-zygotic transition" process. At present, it is not clear how the growing oocytes store and process the newly transcribed mRNA under physiological conditions. In this study, we report non-membrane-bound compartments, nuclear poly(A) domains (NPADs), as the hub for newly transcribed mRNA, in developing mouse oocytes. The RNA binding protein PABPN1 promotes the formation of NPAD through its N-terminal disordered domain and RNA-recognized motif by means of liquid phase separation. Pabpn1-null growing oocytes cannot form NPAD normally in vivo and have defects in stability of oocyte growing-related transcripts and formation of long 3' untranslated region isoform transcripts. Ultimately, Pabpn1fl/fl;Gdf9-Cre mice are completely sterile with primary ovarian insufficiency. These results demonstrate that NPAD formed by the phase separation properties of PABPN1-mRNA are the hub of the newly transcribed mRNA and essential for the development of oocytes and female reproduction.
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Affiliation(s)
- Xing-Xing Dai
- MOE Key Laboratory for Biosystems Homeostasis and Protection and Innovation Center for Cell Signaling Network, Life Sciences Institute, Zhejiang University, Hangzhou 310058, China
| | - Shuai-Bo Pi
- MOE Key Laboratory for Biosystems Homeostasis and Protection and Innovation Center for Cell Signaling Network, Life Sciences Institute, Zhejiang University, Hangzhou 310058, China
| | - Long-Wen Zhao
- MOE Key Laboratory for Biosystems Homeostasis and Protection and Innovation Center for Cell Signaling Network, Life Sciences Institute, Zhejiang University, Hangzhou 310058, China
| | - Yun-Wen Wu
- MOE Key Laboratory for Biosystems Homeostasis and Protection and Innovation Center for Cell Signaling Network, Life Sciences Institute, Zhejiang University, Hangzhou 310058, China
| | - Jing-Ling Shen
- Institute of Life Sciences, College of Life and Environmental Sciences, Wenzhou University, Wenzhou 325035, China
| | - Song-Ying Zhang
- Key Laboratory of Reproductive Dysfunction Management of Zhejiang Province, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, Hangzhou, China
| | - Qian-Qian Sha
- Fertility Preservation Laboratory, Reproductive Medicine Center, Guangdong Second Provincial General Hospital, 510317 Guangzhou, China
| | - Heng-Yu Fan
- MOE Key Laboratory for Biosystems Homeostasis and Protection and Innovation Center for Cell Signaling Network, Life Sciences Institute, Zhejiang University, Hangzhou 310058, China
- Key Laboratory of Reproductive Dysfunction Management of Zhejiang Province, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, Hangzhou, China
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17
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Cheng S, Altmeppen G, So C, Welp LM, Penir S, Ruhwedel T, Menelaou K, Harasimov K, Stützer A, Blayney M, Elder K, Möbius W, Urlaub H, Schuh M. Mammalian oocytes store mRNAs in a mitochondria-associated membraneless compartment. Science 2022; 378:eabq4835. [PMID: 36264786 DOI: 10.1126/science.abq4835] [Citation(s) in RCA: 44] [Impact Index Per Article: 22.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Full-grown oocytes are transcriptionally silent and must stably maintain the messenger RNAs (mRNAs) needed for oocyte meiotic maturation and early embryonic development. However, where and how mammalian oocytes store maternal mRNAs is unclear. Here, we report that mammalian oocytes accumulate mRNAs in a mitochondria-associated ribonucleoprotein domain (MARDO). MARDO assembly around mitochondria was promoted by the RNA-binding protein ZAR1 and directed by an increase in mitochondrial membrane potential during oocyte growth. MARDO foci coalesced into hydrogel-like matrices that clustered mitochondria. Maternal mRNAs stored in the MARDO were translationally repressed. Loss of ZAR1 disrupted the MARDO, dispersed mitochondria, and caused a premature loss of MARDO-localized mRNAs. Thus, a mitochondria-associated membraneless compartment controls mitochondrial distribution and regulates maternal mRNA storage, translation, and decay to ensure fertility in mammals.
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Affiliation(s)
- Shiya Cheng
- Department of Meiosis, Max Planck Institute for Multidisciplinary Sciences, Göttingen, Germany
| | - Gerrit Altmeppen
- Department of Meiosis, Max Planck Institute for Multidisciplinary Sciences, Göttingen, Germany
| | - Chun So
- Department of Meiosis, Max Planck Institute for Multidisciplinary Sciences, Göttingen, Germany
| | - Luisa M Welp
- Bioanalytical Mass Spectrometry Group, Max Planck Institute for Multidisciplinary Sciences, Göttingen, Germany
| | - Sarah Penir
- Department of Meiosis, Max Planck Institute for Multidisciplinary Sciences, Göttingen, Germany
| | - Torben Ruhwedel
- Electron Microscopy City Campus, Department of Neurogenetics, Max Planck Institute for Multidisciplinary Sciences, Göttingen, Germany
| | - Katerina Menelaou
- Department of Meiosis, Max Planck Institute for Multidisciplinary Sciences, Göttingen, Germany.,Bourn Hall Clinic, Cambridge, UK
| | - Katarina Harasimov
- Department of Meiosis, Max Planck Institute for Multidisciplinary Sciences, Göttingen, Germany
| | - Alexandra Stützer
- Bioanalytical Mass Spectrometry Group, Max Planck Institute for Multidisciplinary Sciences, Göttingen, Germany
| | | | | | - Wiebke Möbius
- Electron Microscopy City Campus, Department of Neurogenetics, Max Planck Institute for Multidisciplinary Sciences, Göttingen, Germany.,Cluster of Excellence "Multiscale Bioimaging: from Molecular Machines to Networks of Excitable Cells" (MBExC), University of Göttingen, Göttingen, Germany
| | - Henning Urlaub
- Bioanalytical Mass Spectrometry Group, Max Planck Institute for Multidisciplinary Sciences, Göttingen, Germany.,Bioanalytics Group, Institute for Clinical Chemistry, University Medical Center Göttingen, Göttingen, Germany
| | - Melina Schuh
- Department of Meiosis, Max Planck Institute for Multidisciplinary Sciences, Göttingen, Germany.,Cluster of Excellence "Multiscale Bioimaging: from Molecular Machines to Networks of Excitable Cells" (MBExC), University of Göttingen, Göttingen, Germany
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18
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Dynamic mRNA degradome analyses indicate a role of histone H3K4 trimethylation in association with meiosis-coupled mRNA decay in oocyte aging. Nat Commun 2022; 13:3191. [PMID: 35680896 PMCID: PMC9184541 DOI: 10.1038/s41467-022-30928-x] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2021] [Accepted: 05/20/2022] [Indexed: 11/08/2022] Open
Abstract
A decrease in oocyte developmental potential is a major obstacle for successful pregnancy in women of advanced age. However, the age-related epigenetic modifications associated with dynamic transcriptome changes, particularly meiotic maturation-coupled mRNA clearance, have not been adequately characterized in human oocytes. This study demonstrates a decreased storage of transcripts encoding key factors regulating the maternal mRNA degradome in fully grown oocytes of women of advanced age. A similar defect in meiotic maturation-triggered mRNA clearance is also detected in aged mouse oocytes. Mechanistically, the epigenetic and cytoplasmic aspects of oocyte maturation are synchronized in both the normal development and aging processes. The level of histone H3K4 trimethylation (H3K4me3) is high in fully grown mouse and human oocytes derived from young females but decreased during aging due to the decreased expression of epigenetic factors responsible for H3K4me3 accumulation. Oocyte-specific knockout of the gene encoding CxxC-finger protein 1 (CXXC1), a DNA-binding subunit of SETD1 methyltransferase, causes ooplasm changes associated with accelerated aging and impaired maternal mRNA translation and degradation. These results suggest that a network of CXXC1-maintained H3K4me3, in association with mRNA decay competence, sets a timer for oocyte deterioration and plays a role in oocyte aging in both mouse and human oocytes.
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19
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Zhu Y, Wu W, Chen S, Zhang Z, Zhang G, Li J, Jiang M. Mettl3 downregulation in germinal vesicle oocytes inhibits mRNA decay and the 1st polar body extrusion during maturation. Biol Reprod 2022; 107:765-778. [PMID: 35639638 DOI: 10.1093/biolre/ioac112] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2021] [Revised: 04/18/2022] [Accepted: 05/17/2022] [Indexed: 11/12/2022] Open
Abstract
In oocytes, mRNA decay is essential for maturation and subsequent events, such as maternal-zygotic transition, zygotic genomic activation, and embryo development. Reversible N6-methyladenosine RNA methylation directly regulates transcription, pre-mRNA splicing, mRNA export, mRNA stability, and translation. Here, we identified that downregulation of N6-methyladenosine modification by microinjecting a methyltransferase-like 3 (Mettl3)-specific small interfering RNA into mouse germinal vesicle oocytes led to defects in meiotic spindles and the 1st polar body extrusion during maturation in vitro. By further quantitative real-time polymerase chain reaction and Poly(A)-tail assay analysis, we found that N6-methyladenosine methylation mainly acts by reducing deadenylation of mRNAs mediated by the Carbon catabolite repression 4 (CCR4)- negative on TATA less-(NOT) system, thereby causing mRNA accumulation in oocytes. Meanwhile, transcriptome analysis of germinal vesicle oocytes revealed the downregulation of transcripts of several genes encoding ribosomal subunits proteins in the Mettl3 small interfering RNA treated group, suggesting that N6-methyladenosine modification might affect translation. Together, our results indicate that RNA methylation accelerates mRNA decay, confirming the critical role of RNA clearance in oocyte maturation.
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Affiliation(s)
- Yan Zhu
- Medical Experiment Center, Guangdong Second Provincial General Hospital, Guangdong, PR China
| | - Wenjiao Wu
- Medical Experiment Center, Guangdong Second Provincial General Hospital, Guangdong, PR China
| | - Shaoqing Chen
- Center for Reproductive Medicine, Guangdong Second Provincial General Hospital, Guangdong, PR China
| | - Zhen Zhang
- Medical Experiment Center, Guangdong Second Provincial General Hospital, Guangdong, PR China
| | - Guangli Zhang
- Center for Reproductive Medicine, Guangdong Second Provincial General Hospital, Guangdong, PR China
| | - Jie Li
- Medical Experiment Center, Guangdong Second Provincial General Hospital, Guangdong, PR China
| | - Manxi Jiang
- Center for Reproductive Medicine, Guangdong Second Provincial General Hospital, Guangdong, PR China
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20
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Jamieson-Lucy AH, Kobayashi M, James Aykit Y, Elkouby YM, Escobar-Aguirre M, Vejnar CE, Giraldez AJ, Mullins MC. A proteomics approach identifies novel resident zebrafish Balbiani body proteins Cirbpa and Cirbpb. Dev Biol 2022; 484:1-11. [PMID: 35065906 PMCID: PMC8967276 DOI: 10.1016/j.ydbio.2022.01.006] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2021] [Revised: 01/11/2022] [Accepted: 01/13/2022] [Indexed: 01/17/2023]
Abstract
The Balbiani body (Bb) is the first marker of polarity in vertebrate oocytes. The Bb is a conserved structure found in diverse animals including insects, fish, amphibians, and mammals. During early zebrafish oogenesis, the Bb assembles as a transient aggregate of mRNA, proteins, and membrane-bound organelles at the presumptive vegetal side of the oocyte. As the early oocyte develops, the Bb appears to grow slowly, until at the end of stage I of oogenesis it disassembles and deposits its cargo of localized mRNAs and proteins. In fish and frogs, this cargo includes the germ plasm as well as gene products required to specify dorsal tissues of the future embryo. We demonstrate that the Bb is a stable, solid structure that forms a size exclusion barrier similar to other biological hydrogels. Despite its central role in oocyte polarity, little is known about the mechanism behind the Bb's action. Analysis of the few known protein components of the Bb is insufficient to explain how the Bb assembles, translocates, and disassembles. We isolated Bbs from zebrafish oocytes and performed mass spectrometry to define the Bb proteome. We successfully identified 77 proteins associated with the Bb sample, including known Bb proteins and novel RNA-binding proteins. In particular, we identified Cirbpa and Cirbpb, which have both an RNA-binding domain and a predicted self-aggregation domain. In stage I oocytes, Cirbpa and Cirbpb localize to the Bb rather than the nucleus (as in somatic cells), indicating that they may have a specialized function in the germ line. Both the RNA-binding domain and the self-aggregation domain are sufficient to localize to the Bb, suggesting that Cirbpa and Cirbpb interact with more than just their mRNA targets within the Bb. We propose that Cirbp proteins crosslink mRNA cargo and proteinaceous components of the Bb as it grows. Beyond Cirbpa and Cirbpb, our proteomics dataset presents many candidates for further study, making it a valuable resource for building a comprehensive mechanism for Bb function at a protein level.
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Affiliation(s)
- Allison H Jamieson-Lucy
- Department of Cell and Developmental Biology, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA, USA
| | - Manami Kobayashi
- Department of Cell and Developmental Biology, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA, USA
| | - Y James Aykit
- Department of Cell and Developmental Biology, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA, USA
| | - Yaniv M Elkouby
- Department of Cell and Developmental Biology, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA, USA
| | - Matias Escobar-Aguirre
- Department of Cell and Developmental Biology, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA, USA
| | - Charles E Vejnar
- Department of Genetics, Yale University School of Medicine, New Haven, CT, USA
| | - Antonio J Giraldez
- Department of Genetics, Yale University School of Medicine, New Haven, CT, USA
| | - Mary C Mullins
- Department of Cell and Developmental Biology, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA, USA.
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21
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Deng M, Chen B, Liu Z, Wan Y, Li D, Yang Y, Wang F. YBX1 mediates alternative splicing and maternal mRNA decay during pre-implantation development. Cell Biosci 2022; 12:12. [PMID: 35109938 PMCID: PMC8812265 DOI: 10.1186/s13578-022-00743-4] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2021] [Accepted: 01/03/2022] [Indexed: 11/28/2022] Open
Abstract
Background In mammals, maternal gene products decay and zygotic genome activation (ZGA) during maternal to zygotic transition (MZT) is critical for the early embryogenesis. Y-box binding protein YBX1 plays vital roles in RNA stabilization and transcriptional regulation, but its roles remain to be elucidated during pre-implantation development. Methods In the present study, we re-analyzed transcriptional level of YBX1 in mice, human, bovine, and goat embryos using public RNA-seq datasets. We further performed siRNA microinjection to knock down the expression of YBX1, and RNA sequencing of the 8-cell stage embryos in the control and YBX1 knockdown group. To reveal the regulation mechanisms of YBX1, we conducted differentially expression analysis, alternative splicing (AS) analysis, enrichment analysis, and 5-EU staining using DESeq2, rMATs, clusterProfiler, and immunofluorescence technique, respectively. Results The expression of YBX1 was increased during MZT in goat, bovine, human, and mice, but significantly decreased in YBX1 knockdown embryos compared with the controls, suggesting successfully knockdown of YBX1. The percentage of blastocyst was decreased, while embryos blocked at the 2- and 4-cell stage were increased in YBX1 knockdown embryos compared to the controls. Using RNA-seq, we identified 1623 up-regulated and 3531 down-regulated genes in the 8-cell stage YBX1 knockdown embryos. Of note, the down-regulated genes were enriched in regulation of RNA/mRNA stability and spliceosome, suggesting that YBX1 might medicate RNA stability and AS. To this end, we identified 3284 differential AS events and 1322 differentially expressed maternal mRNAs at the 8-cell stage YBX1 knockdown embryos. Meanwhile, the splicing factors and mRNA decay-related genes showed aberrant expression, and the transcriptional activity during ZGA in goat and mice was compromised when YBX1 was knocked down. Conclusion YBX1 serves an important role in maternal mRNA decay, alternative splicing, and the transcriptional activity required for early embryogenesis, which will broaden the current understanding of YBX1 functions during the stochastic reprogramming events. Supplementary Information The online version contains supplementary material available at 10.1186/s13578-022-00743-4.
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Affiliation(s)
- Mingtian Deng
- Jiangsu Livestock Embryo Engineering Laboratory, College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, 210095, China
| | - Baobao Chen
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, 210095, China
| | - Zifei Liu
- Jiangsu Livestock Embryo Engineering Laboratory, College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, 210095, China
| | - Yongjie Wan
- Jiangsu Livestock Embryo Engineering Laboratory, College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, 210095, China
| | - Dongxu Li
- Jiangsu Livestock Embryo Engineering Laboratory, College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, 210095, China
| | - Yingnan Yang
- Jiangsu Livestock Embryo Engineering Laboratory, College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, 210095, China
| | - Feng Wang
- Jiangsu Livestock Embryo Engineering Laboratory, College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, 210095, China.
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22
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Jiang ZY, Fan HY. Five questions toward mRNA degradation in oocytes and preimplantation embryos: When, who, to whom, how, and why? Biol Reprod 2022; 107:62-75. [DOI: 10.1093/biolre/ioac014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2021] [Revised: 01/10/2022] [Accepted: 01/15/2022] [Indexed: 11/13/2022] Open
Abstract
Abstract
RNA, the primary product of the genome, is subject to various biological events during its lifetime. During mammalian gametogenesis and early embryogenesis, germ cells and preimplantation embryos undergo marked changes in the transcriptome, including mRNA turnover. Various factors, including specialized proteins, RNAs, and organelles, function in an intricate degradation system, and the degradation selectivity is determined by effectors and their target mRNAs. RNA homeostasis regulators and surveillance factors function in the global transcriptome of oocytes and somatic cells. Other factors, including BTG4, PABPN1L, the CCR4-NOT subunits, CNOT6L and CNOT7, and TUTs, are responsible for two maternal mRNA avalanches: M- and Z-decay. In this review, we discuss recent advances in mRNA degradation mechanisms in mammalian oocytes and preimplantation embryos. We focused on the studies in mice, as a model mammalian species, and on RNA turnover effectors and the cis-elements in targeting RNAs.
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Affiliation(s)
- Zhi-Yan Jiang
- Life Sciences Institute, Zhejiang University, Hangzhou 310058, China
| | - Heng-Yu Fan
- Life Sciences Institute, Zhejiang University, Hangzhou 310058, China
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Kinterová V, Kaňka J, Bartková A, Toralová T. SCF Ligases and Their Functions in Oogenesis and Embryogenesis-Summary of the Most Important Findings throughout the Animal Kingdom. Cells 2022; 11:cells11020234. [PMID: 35053348 PMCID: PMC8774150 DOI: 10.3390/cells11020234] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2021] [Revised: 01/07/2022] [Accepted: 01/09/2022] [Indexed: 12/10/2022] Open
Abstract
SCF-dependent proteolysis was first discovered via genetic screening of budding yeast almost 25 years ago. In recent years, more and more functions of SCF (Skp1-Cullin 1-F-box) ligases have been described, and we can expect the number of studies on this topic to increase. SCF ligases, which are E3 ubiquitin multi-protein enzymes, catalyse protein ubiquitination and thus allow protein degradation mediated by the 26S proteasome. They play a crucial role in the degradation of cell cycle regulators, regulation of the DNA repair and centrosome cycle and play an important role in several diseases. SCF ligases seem to be needed during all phases of development, from oocyte formation through fertilization, activation of the embryonic genome to embryo implantation. In this review, we summarize known data on SCF ligase-mediated degradation during oogenesis and embryogenesis. In particular, SCFβTrCP and SCFSEL-10/FBXW7 are among the most important and best researched ligases during early development. SCFβTrCP is crucial for the oogenesis of Xenopus and mouse and also in Xenopus and Drosophila embryogenesis. SCFSEL-10/FBXW7 participates in the degradation of several RNA-binding proteins and thereby affects the regulation of gene expression during the meiosis of C. elegans. Nevertheless, a large number of SCF ligases that are primarily involved in embryogenesis remain to be elucidated.
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Affiliation(s)
- Veronika Kinterová
- Laboratory of Developmental Biology, Institute of Animal Physiology and Genetics of the Czech Academy of Sciences, 27721 Libechov, Czech Republic; (J.K.); (A.B.); (T.T.)
- Correspondence:
| | - Jiří Kaňka
- Laboratory of Developmental Biology, Institute of Animal Physiology and Genetics of the Czech Academy of Sciences, 27721 Libechov, Czech Republic; (J.K.); (A.B.); (T.T.)
| | - Alexandra Bartková
- Laboratory of Developmental Biology, Institute of Animal Physiology and Genetics of the Czech Academy of Sciences, 27721 Libechov, Czech Republic; (J.K.); (A.B.); (T.T.)
- Faculty of Natural Sciences, Constantine the Philosopher University in Nitra, 949 01 Nitra, Slovakia
| | - Tereza Toralová
- Laboratory of Developmental Biology, Institute of Animal Physiology and Genetics of the Czech Academy of Sciences, 27721 Libechov, Czech Republic; (J.K.); (A.B.); (T.T.)
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24
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Zhao LW, Zhu YZ, Wu YW, Pi SB, Shen L, Fan HY. Nuclear poly(A) binding protein 1 (PABPN1) mediates zygotic genome activation-dependent maternal mRNA clearance during mouse early embryonic development. Nucleic Acids Res 2021; 50:458-472. [PMID: 34904664 PMCID: PMC8855302 DOI: 10.1093/nar/gkab1213] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2021] [Revised: 11/18/2021] [Accepted: 11/25/2021] [Indexed: 11/14/2022] Open
Abstract
An embryo starts its life with maternal mRNA clearance, which is crucial for embryonic development. The elimination of maternal transcripts occurs by the joint action of two pathways: the maternally encoded mRNA decay pathway (M-decay) and the zygotic genome activation (ZGA)-dependent pathway (Z-decay). However, zygotic factors triggering maternal mRNA decay in early mammalian embryos remain largely unknown. In this study, we identified the zygotically encoded nuclear poly(A) binding protein 1 (PABPN1) as a factor required for maternal mRNA turnover, with a previously undescribed cytoplasmic function. Cytoplasmic PABPN1 docks on 3'-uridylated transcripts, downstream of terminal uridylyl transferases TUT4 and TUT7, and recruits 3'-5' exoribonuclease DIS3L2 to its targets, facilitating maternal mRNA decay. Pabpn1-knockout in mice resulted in preimplantation stage mortality due to early developmental arrest at the morula stage. Maternal mRNAs to be eliminated via the Z-decay pathway failed to be removed from Pabpn1-depleted embryos. Furthermore, PABPN1-mediated Z-decay is essential for major ZGA and regulates the expression of cell fate-determining factors in mouse preimplantation embryos. This study revealed an unforeseen cytoplasmic function of PABPN1 coupled with early embryonic development, characterized the presence of a zygotic destabilizer of maternal mRNA, and elucidated the Z-decay process mechanisms, which potentially contribute to human fertility.
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Affiliation(s)
- Long-Wen Zhao
- MOE Key Laboratory for Biosystems Homeostasis, Life Sciences Institute, Zhejiang University, Hangzhou 310058, China
| | - Ye-Zhang Zhu
- MOE Key Laboratory for Biosystems Homeostasis, Life Sciences Institute, Zhejiang University, Hangzhou 310058, China
| | - Yun-Wen Wu
- MOE Key Laboratory for Biosystems Homeostasis, Life Sciences Institute, Zhejiang University, Hangzhou 310058, China
| | - Shuai-Bo Pi
- MOE Key Laboratory for Biosystems Homeostasis, Life Sciences Institute, Zhejiang University, Hangzhou 310058, China
| | - Li Shen
- MOE Key Laboratory for Biosystems Homeostasis, Life Sciences Institute, Zhejiang University, Hangzhou 310058, China
| | - Heng-Yu Fan
- MOE Key Laboratory for Biosystems Homeostasis, Life Sciences Institute, Zhejiang University, Hangzhou 310058, China
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25
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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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Wang Y, Feng T, Zhu M, Shi X, Wang Z, Liu S, Zhang X, Zhang J, Zhao S, Zhang J, Ling X, Liu M. PABPN1L assemble into "ring-like" aggregates in the cytoplasm of MII oocytes and is associated with female infertility†. Biol Reprod 2021; 106:83-94. [PMID: 34726234 DOI: 10.1093/biolre/ioab203] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2021] [Revised: 09/20/2021] [Accepted: 10/27/2021] [Indexed: 11/14/2022] Open
Abstract
Infertility affects 10% - 15% of families worldwide. However, the pathogenesis of female infertility caused by abnormal early embryonic development is not clear. A resent study showed that PABPN1L recruited BTG4 to mRNA 3'-poly(A) tails and was essential for maternal mRNA degradation. Here, we generated an PABPN1L-antibody and found "ring-like" PABPN1L aggregates in the cytoplasm of MII oocytes. PABPN1L-EGFP proteins spontaneously formed"ring-like" aggregates in vitro. This phenomenon is similar with CCR4-NOT catalytic subunit, CNOT7, when it starts deadenylation process in vitro. We constructed two mouse model (Pabpn1l -/- and Pabpn1l tm1a/tm1a) simulating the intron1-exon2 abnormality of human PABPN1L and found that the female was sterile and the male was fertile. Using RNA-Seq, we observed a large-scale up-regulation of RNA in zygotes derived from Pabpn1l-/- MII oocytes. We found that 9222 genes were up-regulated instead of being degraded in the Pabpn1l-♀/+♂zygote. Both the Btg4 and Cnot61 genes are necessary for the deadenylation process and Pabpn1l -/- resembled both the Btg4 and Cnot6l knockouts, where 71.2% genes stabilized in the Btg4-♀/+♂ zygote and 84.2% genes stabilized in the Cnot6l-♀/+♂zygote were also stabilized in Pabpn1l-♀/+♂ zygote. BTG4/CNOT7/CNOT6L was partially co-located with PABPN1L in MII oocytes. The above results suggest that PABPN1L is widely associated with CCR4-NOT-mediated maternal mRNA degradation and PABPN1L variants on intron1-exon2 could be a genetic marker of female infertility. Summary sentence. "Ring-like" PABPN1L aggregates was found in the cytoplasm of MII oocytes and in vitro; intron1-exon2 abnormality of Pabpn1l leads female sterile in mice.
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Affiliation(s)
- Ying Wang
- State Key Laboratory of Reproductive Medicine, Department of Reproduction, Women's Hospital of Nanjing Medical University, Nanjing Maternity and Child Health Care Hospital, Nanjing, 210004, China
| | - Tianhao Feng
- State Key Laboratory of Reproductive Medicine, Department of Histology and Embryology, Nanjing Medical University, Nanjing, 211166, China
| | - Mingcong Zhu
- State Key Laboratory of Reproductive Medicine, Department of Histology and Embryology, Nanjing Medical University, Nanjing, 211166, China
| | - Xiaodan Shi
- State Key Laboratory of Reproductive Medicine, Department of Reproduction, Women's Hospital of Nanjing Medical University, Nanjing Maternity and Child Health Care Hospital, Nanjing, 210004, China
| | - Zerui Wang
- State Key Laboratory of Reproductive Medicine, Department of Histology and Embryology, Nanjing Medical University, Nanjing, 211166, China
| | - Siyu Liu
- State Key Laboratory of Reproductive Medicine, Department of Histology and Embryology, Nanjing Medical University, Nanjing, 211166, China
| | - Xin Zhang
- State Key Laboratory of Reproductive Medicine, Department of Histology and Embryology, Nanjing Medical University, Nanjing, 211166, China
| | - Jintao Zhang
- State Key Laboratory of Reproductive Medicine, Department of Histology and Embryology, Nanjing Medical University, Nanjing, 211166, China
| | - Shuqin Zhao
- State Key Laboratory of Reproductive Medicine, Animal Core Facility of Nanjing Medical University, Nanjing 211166, China
| | - Junqiang Zhang
- State Key Laboratory of Reproductive Medicine, Department of Reproduction, Women's Hospital of Nanjing Medical University, Nanjing Maternity and Child Health Care Hospital, Nanjing, 210004, China
| | - Xiufeng Ling
- State Key Laboratory of Reproductive Medicine, Department of Reproduction, Women's Hospital of Nanjing Medical University, Nanjing Maternity and Child Health Care Hospital, Nanjing, 210004, China
| | - Mingxi Liu
- State Key Laboratory of Reproductive Medicine, Department of Histology and Embryology, Nanjing Medical University, Nanjing, 211166, China
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What defines the maternal transcriptome? Biochem Soc Trans 2021; 49:2051-2062. [PMID: 34415300 PMCID: PMC8589422 DOI: 10.1042/bst20201125] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2021] [Revised: 07/05/2021] [Accepted: 07/19/2021] [Indexed: 01/09/2023]
Abstract
In somatic cells, RNA polymerase II (Pol II) transcription initiation starts by the binding of the general transcription factor TFIID, containing the TATA-binding protein (TBP) and 13 TBP-associated factors (TAFs), to core promoters. However, in growing oocytes active Pol II transcription is TFIID/TBP-independent, as during oocyte growth TBP is replaced by its vertebrate-specific paralog TBPL2. TBPL2 does not interact with TAFs, but stably associates with TFIIA. The maternal transcriptome is the population of mRNAs produced and stored in the cytoplasm of growing oocytes. After fertilization, maternal mRNAs are inherited by the zygote from the oocyte. As transcription becomes silent after oocyte growth, these mRNAs are the sole source for active protein translation. They will participate to complete the protein pool required for oocyte terminal differentiation, fertilization and initiation of early development, until reactivation of transcription in the embryo, called zygotic genome activation (ZGA). All these events are controlled by an important reshaping of the maternal transcriptome. This procedure combines cytoplasmic readenylation of stored transcripts, allowing their translation, and different waves of mRNA degradation by deadenylation coupled to decapping, to eliminate transcripts coding for proteins that are no longer required. The reshaping ends after ZGA with an almost total clearance of the maternal transcripts. In the past, the murine maternal transcriptome has received little attention but recent progresses have brought new insights into the regulation of maternal mRNA dynamics in the mouse. This review will address past and recent data on the mechanisms associated with maternal transcriptome dynamic in the mouse.
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Jiang JC, Zhang H, Cao LR, Dai XX, Zhao LW, Liu HB, Fan HY. Oocyte meiosis-coupled poly(A) polymerase α phosphorylation and activation trigger maternal mRNA translation in mice. Nucleic Acids Res 2021; 49:5867-5880. [PMID: 34048556 PMCID: PMC8191758 DOI: 10.1093/nar/gkab431] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2021] [Revised: 04/18/2021] [Accepted: 05/05/2021] [Indexed: 01/25/2023] Open
Abstract
Mammalian oocyte maturation is driven by strictly regulated polyadenylation and translational activation of maternal mRNA stored in the cytoplasm. However, the poly(A) polymerase (PAP) that directly mediates cytoplasmic polyadenylation in mammalian oocytes has not been determined. In this study, we identified PAPα as the elusive enzyme that catalyzes cytoplasmic mRNA polyadenylation implicated in mouse oocyte maturation. PAPα was mainly localized in the germinal vesicle (GV) of fully grown oocytes but was distributed to the ooplasm after GV breakdown. Inhibition of PAPα activity impaired cytoplasmic polyadenylation and translation of maternal transcripts, thus blocking meiotic cell cycle progression. Once an oocyte resumes meiosis, activated CDK1 and ERK1/2 cooperatively mediate the phosphorylation of three serine residues of PAPα, 537, 545 and 558, thereby leading to increased activity. This mechanism is responsible for translational activation of transcripts lacking cytoplasmic polyadenylation elements in their 3′-untranslated region (3′-UTR). In turn, activated PAPα stimulated polyadenylation and translation of the mRNA encoding its own (Papola) through a positive feedback circuit. ERK1/2 promoted Papola mRNA translation in a 3′-UTR polyadenylation signal-dependent manner. Through these mechanisms, PAPα activity and levels were significantly amplified, improving the levels of global mRNA polyadenylation and translation, thus, benefiting meiotic cell cycle progression.
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Affiliation(s)
- Jun-Chao Jiang
- MOE Key Laboratory for Biosystems Homeostasis and Protection and Innovation Center for Cell Signaling Network, Life Sciences Institute, Zhejiang University, Hangzhou 310058, China
| | - Hua Zhang
- College of Animal Sciences, Zhejiang University, Hangzhou 310058, China
| | - Lan-Rui Cao
- MOE Key Laboratory for Biosystems Homeostasis and Protection and Innovation Center for Cell Signaling Network, Life Sciences Institute, Zhejiang University, Hangzhou 310058, China
| | - Xing-Xing Dai
- MOE Key Laboratory for Biosystems Homeostasis and Protection and Innovation Center for Cell Signaling Network, Life Sciences Institute, Zhejiang University, Hangzhou 310058, China
| | - Long-Wen Zhao
- MOE Key Laboratory for Biosystems Homeostasis and Protection and Innovation Center for Cell Signaling Network, Life Sciences Institute, Zhejiang University, Hangzhou 310058, China
| | - Hong-Bin Liu
- Center for Reproductive Medicine, Cheeloo College of Medicine, Shandong University, Jinan 250012, China
| | - Heng-Yu Fan
- MOE Key Laboratory for Biosystems Homeostasis and Protection and Innovation Center for Cell Signaling Network, Life Sciences Institute, Zhejiang University, Hangzhou 310058, China.,Key Laboratory of Reproductive Dysfunction Management of Zhejiang Province, Assisted Reproduction Unit, Department of Obstetrics and Gynecology, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, Hangzhou 310016, China
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29
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Amine H, Ripin N, Sharma S, Stoecklin G, Allain FH, Séraphin B, Mauxion F. A conserved motif in human BTG1 and BTG2 proteins mediates interaction with the poly(A) binding protein PABPC1 to stimulate mRNA deadenylation. RNA Biol 2021; 18:2450-2465. [PMID: 34060423 PMCID: PMC8632095 DOI: 10.1080/15476286.2021.1925476] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Antiproliferative BTG/Tob proteins interact directly with the CAF1 deadenylase subunit of the CCR4-NOT complex. This binding requires the presence of two conserved motifs, boxA and boxB, characteristic of the BTG/Tob APRO domain. Consistently, these proteins were shown to stimulate mRNA deadenylation and decay in several instances. Two members of the family, BTG1 and BTG2, were reported further to associate with the protein arginine methyltransferase PRMT1 through a motif, boxC, conserved only in this subset of proteins. We recently demonstrated that BTG1 and BTG2 also contact the first RRM domain of the cytoplasmic poly(A) binding protein PABPC1. To decipher the mode of interaction of BTG1 and BTG2 with partners, we performed nuclear magnetic resonance experiments as well as mutational and biochemical analyses. Our data demonstrate that, in the context of an APRO domain, the boxC motif is necessary and sufficient to allow interaction with PABPC1 but, unexpectedly, that it is not required for BTG2 association with PRMT1. We show further that the presence of a boxC motif in an APRO domain endows it with the ability to stimulate deadenylation in cellulo and in vitro. Overall, our results identify the molecular interface allowing BTG1 and BTG2 to activate deadenylation, a process recently shown to be necessary for maintaining T-cell quiescence.
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Affiliation(s)
- Hamza Amine
- Institut de Génétique et de Biologie Moléculaire et Cellulaire (IGBMC), Illkirch, France.,Centre National de Recherche Scientifique (CNRS) UMR 7104, Illkirch, France.,Institut National de Santé et de Recherche Médicale (INSERM) U1258, Illkirch, France.,Université de Strasbourg, Illkirch, France
| | - Nina Ripin
- Department of Biology, Institute of Molecular Biology and Biophysics, ETH Zürich, Switzerland
| | - Sahil Sharma
- Mannheim Institute for Innate Immunoscience (MI3), Medical Faculty Mannheim, Heidelberg University, Mannheim, Germany.,German Cancer Research Center (DKFZ)-ZMBH Alliance, Center for Molecular Biology of Heidelberg University (ZMBH), Heidelberg, Germany
| | - Georg Stoecklin
- Mannheim Institute for Innate Immunoscience (MI3), Medical Faculty Mannheim, Heidelberg University, Mannheim, Germany.,German Cancer Research Center (DKFZ)-ZMBH Alliance, Center for Molecular Biology of Heidelberg University (ZMBH), Heidelberg, Germany
| | - Frédéric H Allain
- Department of Biology, Institute of Molecular Biology and Biophysics, ETH Zürich, Switzerland.,Department of Biology, Institute of Biochemistry, ETH Zürich, Switzerland
| | - Bertrand Séraphin
- Institut de Génétique et de Biologie Moléculaire et Cellulaire (IGBMC), Illkirch, France.,Centre National de Recherche Scientifique (CNRS) UMR 7104, Illkirch, France.,Institut National de Santé et de Recherche Médicale (INSERM) U1258, Illkirch, France.,Université de Strasbourg, Illkirch, France
| | - Fabienne Mauxion
- Institut de Génétique et de Biologie Moléculaire et Cellulaire (IGBMC), Illkirch, France.,Centre National de Recherche Scientifique (CNRS) UMR 7104, Illkirch, France.,Institut National de Santé et de Recherche Médicale (INSERM) U1258, Illkirch, France.,Université de Strasbourg, Illkirch, France
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30
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Dai X, Jiang Y, Gu J, Jiang Z, Wu Y, Yu C, Yin H, Zhang J, Shi Q, Shen L, Sha Q, Fan H. The CNOT4 Subunit of the CCR4-NOT Complex is Involved in mRNA Degradation, Efficient DNA Damage Repair, and XY Chromosome Crossover during Male Germ Cell Meiosis. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2021; 8:2003636. [PMID: 34026442 PMCID: PMC8132151 DOI: 10.1002/advs.202003636] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/23/2020] [Revised: 01/23/2021] [Indexed: 05/03/2023]
Abstract
The CCR4-NOT complex is a major mRNA deadenylase in eukaryotes, comprising the catalytic subunits CNOT6/6L and CNOT7/8, as well as CNOT4, a regulatory subunit with previously undetermined functions. These subunits have been hypothesized to play synergistic biochemical functions during development. Cnot7 knockout male mice have been reported to be infertile. In this study, viable Cnot6/6l double knockout mice are constructed, and the males are fertile. These results indicate that CNOT7 has CNOT6/6L-independent functions in vivo. It is also demonstrated that CNOT4 is required for post-implantation embryo development and meiosis progression during spermatogenesis. Conditional knockout of Cnot4 in male germ cells leads to defective DNA damage repair and homologous crossover between X and Y chromosomes. CNOT4 functions as a previously unrecognized mRNA adaptor of CCR4-NOT by targeting mRNAs to CNOT7 for deadenylation of poly(A) tails, thereby mediating the degradation of a subset of transcripts from the zygotene to pachytene stage. The mRNA removal promoted by the CNOT4-regulated CCR4-NOT complex during the zygotene-to-pachytene transition is crucial for the appropriate expression of genes involved in the subsequent events of spermatogenesis, normal DNA double-strand break repair during meiosis, efficient crossover between X and Y chromosomes, and ultimately, male fertility.
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Affiliation(s)
- Xing‐Xing Dai
- MOE Key Laboratory for Biosystems Homeostasis & Protection and Innovation Center for Cell Signaling NetworkLife Sciences InstituteZhejiang UniversityHangzhou310058China
| | - Yu Jiang
- MOE Key Laboratory for Biosystems Homeostasis & Protection and Innovation Center for Cell Signaling NetworkLife Sciences InstituteZhejiang UniversityHangzhou310058China
| | - Jia‐Hui Gu
- MOE Key Laboratory for Biosystems Homeostasis & Protection and Innovation Center for Cell Signaling NetworkLife Sciences InstituteZhejiang UniversityHangzhou310058China
| | - Zhi‐Yan Jiang
- MOE Key Laboratory for Biosystems Homeostasis & Protection and Innovation Center for Cell Signaling NetworkLife Sciences InstituteZhejiang UniversityHangzhou310058China
| | - Yun‐Wen Wu
- MOE Key Laboratory for Biosystems Homeostasis & Protection and Innovation Center for Cell Signaling NetworkLife Sciences InstituteZhejiang UniversityHangzhou310058China
| | - Chao Yu
- College of Life ScienceZhejiang UniversityHangzhou310058China
| | - Hao Yin
- First Affiliated Hospital of USTCHefei National Laboratory for Physical Sciences at MicroscaleSchool of Basic Medical SciencesDivision of Life Sciences and MedicineCAS Center for Excellence in Molecular Cell ScienceUniversity of Science and Technology of ChinaHefei230027China
| | - Jue Zhang
- Clinical Research Center for Reproduction and Genetics in Hunan ProvinceReproductive and Genetic Hospital of CITIC‐XIANGYAChangsha410008China
| | - Qing‐Hua Shi
- First Affiliated Hospital of USTCHefei National Laboratory for Physical Sciences at MicroscaleSchool of Basic Medical SciencesDivision of Life Sciences and MedicineCAS Center for Excellence in Molecular Cell ScienceUniversity of Science and Technology of ChinaHefei230027China
| | - Li Shen
- MOE Key Laboratory for Biosystems Homeostasis & Protection and Innovation Center for Cell Signaling NetworkLife Sciences InstituteZhejiang UniversityHangzhou310058China
| | - Qian‐Qian Sha
- Fertility Preservation LaboratoryReproductive Medicine CenterGuangdong Second Provincial General HospitalGuangzhou510317China
| | - Heng‐Yu Fan
- MOE Key Laboratory for Biosystems Homeostasis & Protection and Innovation Center for Cell Signaling NetworkLife Sciences InstituteZhejiang UniversityHangzhou310058China
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31
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Zhao LW, Fan HY. Revisiting poly(A)-binding proteins: Multifaceted regulators during gametogenesis and early embryogenesis. Bioessays 2021; 43:e2000335. [PMID: 33830517 DOI: 10.1002/bies.202000335] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2020] [Revised: 03/21/2021] [Accepted: 03/24/2021] [Indexed: 12/27/2022]
Abstract
Post-transcriptional regulation faces a distinctive challenge in gametes. Transcription is limited when the germ cells enter the division phase due to condensed chromatin, while gene expression during gamete maturation, fertilization, and early cleavage depends on existing mRNA post-transcriptional coordination. The dynamics of the 3'-poly(A) tail play crucial roles in defining mRNA fate. The 3'-poly(A) tail is covered with poly(A)-binding proteins (PABPs) that help to mediate mRNA metabolism and recent work has shed light on the number and function of germ cell-specific expressed PABPs. There are two structurally different PABP groups distinguished by their cytoplasmic and nuclear localization. Both lack catalytic activity but are coupled with various roles through their interaction with multifunctional partners during mRNA metabolism. Here, we present a synopsis of PABP function during gametogenesis and early embryogenesis and describe both conventional and current models of the functions and regulation of PABPs, with an emphasis on the physiological significance of how germ cell-specific PABPs potentially affect human fertility.
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Affiliation(s)
- Long-Wen Zhao
- MOE Key Laboratory for Biosystems Homeostasis & Protection and Innovation Center for Cell Signaling Network, Life Sciences Institute, Zhejiang University, Hangzhou, China
| | - Heng-Yu Fan
- MOE Key Laboratory for Biosystems Homeostasis & Protection and Innovation Center for Cell Signaling Network, Life Sciences Institute, Zhejiang University, Hangzhou, China.,Key Laboratory of Reproductive Dysfunction Management of Zhejiang Province, Assisted Reproduction Unit, Department of Obstetrics and Gynecology, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, Hangzhou, China
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32
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Zhang H, Yan K, Sui L, Li P, Du Y, Hu J, Li M, Yang X, Liang X. Low-level pyruvate inhibits early embryonic development and maternal mRNA clearance in mice. Theriogenology 2021; 166:104-111. [PMID: 33721681 DOI: 10.1016/j.theriogenology.2021.02.022] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2020] [Revised: 02/24/2021] [Accepted: 02/27/2021] [Indexed: 10/22/2022]
Abstract
Energy homeostasis and accomplishment of maternal-to-zygotic transition (MZT), which involves the timed processes of maternal mRNA clearance and zygotic genome activation (ZGA), are essential for mammalian embryogenesis. However, how energy substrates regulate maternal mRNA clearance and the underlying mechanisms have not yet been fully elucidated. Here, we found that mouse embryos were arrested at the 2-cell stage when the pyruvate level was reduced to one-fifth of the control level. Moreover, we observed that the mitochondrial contents and ROS levels were reduced. Interestingly, some maternal mRNA, including transcripts involved in the maternal factor-mediated mRNA decay (M-decay) pathway, was vastly degraded from 1-cell to 2-/4-cell embryos when cultured with control pyruvate levels, but the clearance of these transcripts was hindered when the pyruvate level was reduced. In contrast, some transcripts involved in the zygotic factor-mediated mRNA decay (Z-decay) pathway were vastly downregulated by the reduction in pyruvate. This effect was possibly due to a reduction in global transcription, as the embryos cultured with low-level pyruvate had lower transcription activity than embryos cultured with control pyruvate level. In summary, our findings demonstrate that low-level pyruvate inhibits maternal mRNA clearance, possibly by disrupting the M- and Z-decay pathways, extending our current understanding of the energy requirements of embryogenesis.
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Affiliation(s)
- Hengye Zhang
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, Guangxi University, Nanning, Guangxi, 530004, China; College of Animal Science & Technology, Guangxi University, Nanning, Guangxi, 530004, China
| | - Ke Yan
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, Guangxi University, Nanning, Guangxi, 530004, China; College of Animal Science & Technology, Guangxi University, Nanning, Guangxi, 530004, China
| | - Lumin Sui
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, Guangxi University, Nanning, Guangxi, 530004, China; College of Animal Science & Technology, Guangxi University, Nanning, Guangxi, 530004, China
| | - Pan Li
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, Guangxi University, Nanning, Guangxi, 530004, China; College of Animal Science & Technology, Guangxi University, Nanning, Guangxi, 530004, China
| | - Ya Du
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, Guangxi University, Nanning, Guangxi, 530004, China; College of Animal Science & Technology, Guangxi University, Nanning, Guangxi, 530004, China
| | - Jiahao Hu
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, Guangxi University, Nanning, Guangxi, 530004, China; College of Animal Science & Technology, Guangxi University, Nanning, Guangxi, 530004, China
| | - Mengqi Li
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, Guangxi University, Nanning, Guangxi, 530004, China; College of Animal Science & Technology, Guangxi University, Nanning, Guangxi, 530004, China
| | - Xiaogan Yang
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, Guangxi University, Nanning, Guangxi, 530004, China; College of Animal Science & Technology, Guangxi University, Nanning, Guangxi, 530004, China.
| | - Xingwei Liang
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, Guangxi University, Nanning, Guangxi, 530004, China; College of Animal Science & Technology, Guangxi University, Nanning, Guangxi, 530004, China.
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33
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Ruebel ML, Zambelli F, Schall PZ, Barragan M, VandeVoort CA, Vassena R, Latham KE. Shared aspects of mRNA expression associated with oocyte maturation failure in humans and rhesus monkeys indicating compromised oocyte quality. Physiol Genomics 2021; 53:137-149. [PMID: 33554756 DOI: 10.1152/physiolgenomics.00155.2020] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023] Open
Abstract
Oocyte maturation failure observed in assisted reproduction technology (ART) cycles can limit the number of quality oocytes obtained and present a pronounced barrier for some patients. The potential exists to use unmatured oocytes for ART through in vitro maturation. Understanding the molecular basis of oocyte maturation failure is pertinent to minimizing this loss of oocytes and considerations of whether such oocytes can be used safely for ART. We identified shared transcriptome abnormalities for rhesus monkey and human failed-to-mature (FTM) oocytes relative to healthy matured MII stage oocytes. We discovered that, although the number of shared affected genes was comparatively small, FTM oocytes in both species shared effects for several pathways and functions, including predicted activation of oxidative phosphorylation (OxPhos) with additional effects on mitochondrial function, lipid metabolism, transcription, nucleotide excision repair, endoplasmic reticulum stress, unfolded protein response, and cell viability. RICTOR emerged as a prominent upstream regulator with predicted inhibition across all analyses. Alterations in KDM5A, MTOR, MTORC1, INSR, CAB39L, and STK11 activities were implicated along with RICTOR in modulating mitochondrial activity and OxPhos. Defects in cell cycle progression were not a prominent feature of FTM oocytes. These results identify a common set of transcriptome abnormalities associated with oocyte maturation failure. While our results do not demonstrate causality, they indicate that fundamental aspects of cellular function are abnormal in FTM oocytes and raise significant concerns about the potential risks of using FTM oocytes for ART.
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Affiliation(s)
- Meghan L Ruebel
- Department of Animal Science and Reproductive and Developmental Sciences Program, Michigan State University, East Lansing, Michigan
| | | | - Peter Z Schall
- Department of Animal Science and Reproductive and Developmental Sciences Program, Michigan State University, East Lansing, Michigan
| | | | - Catherine A VandeVoort
- California National Primate Research Center, University of California, Davis, California.,Department of Obstetrics and Gynecology, University of California, Davis, California
| | | | - Keith E Latham
- Department of Animal Science and Reproductive and Developmental Sciences Program, Michigan State University, East Lansing, Michigan
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34
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Argonaute 2 is a key regulator of maternal mRNA degradation in mouse early embryos. Cell Death Discov 2020; 6:133. [PMID: 33298889 PMCID: PMC7691497 DOI: 10.1038/s41420-020-00368-x] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2020] [Revised: 10/06/2020] [Accepted: 11/02/2020] [Indexed: 11/16/2022] Open
Abstract
In mammalian early embryos, the transition from maternal to embryonic control of gene expression requires timely degradation of a subset of maternal mRNAs (MRD). Recently, zygotic genome activation (ZGA)-dependent MRD has been characterized in mouse 2-cell embryo. However, in early embryos, the dynamics of MRD is still poorly understood, and the maternal factor-mediated MRD before and along with ZGA has not been investigated. Argonaute 2 (Ago2) is highly expressed in mouse oocyte and early embryos. In this study, we showed that Ago2-dependent degradation involving RNA interference (RNAi) and RNA activation (RNAa) pathways contributes to the decay of over half of the maternal mRNAs in mouse early embryos. We demonstrated that AGO2 guided by endogenous small interfering RNAs (endosiRNAs), generated from double-stranded RNAs (dsRNAs) formed by maternal mRNAs with their complementary long noncoding RNAs (CMR-lncRNAs), could target maternal mRNAs and cooperate with P-bodies to promote MRD. In addition, we also showed that AGO2 may interact with small activating RNAs (saRNAs) to activate Yap1 and Tead4, triggering ZGA-dependent MRD. Thus, Ago2-dependent degradation is required for timely elimination of subgroups of maternal mRNAs and facilitates the transition between developmental states.
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35
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Zhao LW, Zhu YZ, Chen H, Wu YW, Pi SB, Chen L, Shen L, Fan HY. PABPN1L mediates cytoplasmic mRNA decay as a placeholder during the maternal-to-zygotic transition. EMBO Rep 2020; 21:e49956. [PMID: 32558204 DOI: 10.15252/embr.201949956] [Citation(s) in RCA: 34] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2019] [Revised: 05/12/2020] [Accepted: 05/14/2020] [Indexed: 12/14/2022] Open
Abstract
Maternal mRNA degradation is a critical event of the maternal-to-zygotic transition (MZT) that determines the developmental potential of early embryos. Nuclear Poly(A)-binding proteins (PABPNs) are extensively involved in mRNA post-transcriptional regulation, but their function in the MZT has not been investigated. In this study, we find that the maternally expressed PABPN1-like (PABPN1L), rather than its ubiquitously expressed homolog PABPN1, acts as an mRNA-binding adapter of the mammalian MZT licensing factor BTG4, which mediates maternal mRNA clearance. Female Pabpn1l null mice produce morphologically normal oocytes but are infertile owing to early developmental arrest of the resultant embryos at the 1- to 2-cell stage. Deletion of Pabpn1l impairs the deadenylation and degradation of a subset of BTG4-targeted maternal mRNAs during the MZT. In addition to recruiting BTG4 to the mRNA 3'-poly(A) tails, PABPN1L is also required for BTG4 protein accumulation in maturing oocytes by protecting BTG4 from SCF-βTrCP1 E3 ubiquitin ligase-mediated polyubiquitination and degradation. This study highlights a noncanonical cytoplasmic function of nuclear poly(A)-binding protein in mRNA turnover, as well as its physiological importance during the MZT.
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Affiliation(s)
- Long-Wen Zhao
- MOE Key Laboratory for Biosystems Homeostasis & Protection and Innovation Center for Cell Signaling Network, Life Sciences Institute, Zhejiang University, Hangzhou, China
| | - Ye-Zhang Zhu
- MOE Key Laboratory for Biosystems Homeostasis & Protection and Innovation Center for Cell Signaling Network, Life Sciences Institute, Zhejiang University, Hangzhou, China
| | - Hao Chen
- MOE Key Laboratory for Biosystems Homeostasis & Protection and Innovation Center for Cell Signaling Network, Life Sciences Institute, Zhejiang University, Hangzhou, China
| | - Yun-Wen Wu
- MOE Key Laboratory for Biosystems Homeostasis & Protection and Innovation Center for Cell Signaling Network, Life Sciences Institute, Zhejiang University, Hangzhou, China
| | - Shuai-Bo Pi
- MOE Key Laboratory for Biosystems Homeostasis & Protection and Innovation Center for Cell Signaling Network, Life Sciences Institute, Zhejiang University, Hangzhou, China
| | - Lu Chen
- MOE Key Laboratory for Biosystems Homeostasis & Protection and Innovation Center for Cell Signaling Network, Life Sciences Institute, Zhejiang University, Hangzhou, China
| | - Li Shen
- MOE Key Laboratory for Biosystems Homeostasis & Protection and Innovation Center for Cell Signaling Network, Life Sciences Institute, Zhejiang University, Hangzhou, China
| | - Heng-Yu Fan
- MOE Key Laboratory for Biosystems Homeostasis & Protection and Innovation Center for Cell Signaling Network, Life Sciences Institute, Zhejiang University, Hangzhou, China.,Key Laboratory of Reproductive Dysfunction Management of Zhejiang Province, Assisted Reproduction Unit, Department of Obstetrics and Gynecology, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, Hangzhou, China
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