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Sukthaworn S, Panyim S, Udomkit A. Functional characterization of a cDNA encoding Piwi protein in Penaeus monodon and its potential roles in controlling transposon expression and spermatogenesis. Comp Biochem Physiol A Mol Integr Physiol 2019; 229:60-68. [DOI: 10.1016/j.cbpa.2018.11.022] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2018] [Revised: 11/28/2018] [Accepted: 11/29/2018] [Indexed: 01/22/2023]
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Gomes Fernandes M, He N, Wang F, Van Iperen L, Eguizabal C, Matorras R, Roelen BAJ, Chuva De Sousa Lopes SM. Human-specific subcellular compartmentalization of P-element induced wimpy testis-like (PIWIL) granules during germ cell development and spermatogenesis. Hum Reprod 2019; 33:258-269. [PMID: 29237021 PMCID: PMC5850288 DOI: 10.1093/humrep/dex365] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2017] [Accepted: 11/23/2017] [Indexed: 01/30/2023] Open
Abstract
STUDY QUESTION What is the dynamics of expression of P-element induced wimpy testis-like (PIWIL) proteins in the germline during human fetal development and spermatogenesis? SUMMARY ANSWER PIWIL1, PIWIL2, PIWIL3 and PIWIL4 were expressed in a sex-specific fashion in human germ cells (GC) during development and adulthood. PIWILs showed a mutually exclusive pattern of subcellular localization. PIWILs were present in the intermitochondrial cement and a single large granule in meiotic GC and their expression was different from that observed in mice, highlighting species-differences. WHAT IS KNOWN ALREADY In mice, PIWIL proteins play prominent roles in male infertility. PIWIL mouse mutants show either post-meiotic arrest at the round spermatid stage (PIWIL1) or arrest at the zygotene-pachytene stage of meiosis I (PIWIL2 and PIWIL4) in males, while females remain fertile. Recent studies have reported a robust piRNA pool in human fetal ovary. STUDY DESIGN, SIZE, DURATION This is a qualitative analysis of PIWILs expression in paraffin-embedded fetal human male (N = 8), female gonads (N = 6) and adult testes (N = 5), and bioinformatics analysis of online available single-cell transcriptomics data of human fetal germ cells (n = 242). PARTICIPANTS/MATERIALS, SETTING, METHODS Human fetal gonads from elective abortion without medical indication and adult testes biopsies were donated for research with informed consent. Samples were fixed, paraffin-embedded and analyzed by immunofluorescence to study the temporal and cellular localization of PIWIL1, PIWIL2, PIWIL3 and PIWIL4. MAIN RESULTS AND THE ROLE OF CHANCE PIWIL1, PIWIL2 and PIWIL4 showed a mutually exclusive pattern of subcellular localization, particularly in female oocytes. To our surprise, PIWIL1 immunostaining revealed the presence of a single dense paranuclear body, resembling the chromatoid body of haploid spermatocytes, in meiotic oocytes. Moreover, in contrast to mice, PIWIL4, but not PIWIL2, localized to the intermitochondrial cement. PIWIL3 was not expressed in GC during development. The upregulation of PIWIL transcripts correlated with the transcription of markers associated with piRNAs biogenesis like the TDRDs and HENMT1 in fetal GC. LARGE SCALE DATA Non-applicable. LIMITATIONS, REASONS FOR CAUTION This study is limited by the restricted number of samples and consequently stages analyzed. WIDER IMPLICATIONS OF THE FINDINGS In the germline, PIWILs ensure the integrity of the human genome protecting it from ‘parasitic sequences’. This study offers novel insights on the expression dynamics of PIWILs during the window of epigenetic remodeling and meiosis, and highlights important differences between humans and mice, which may prove particularly important to understand causes of infertility and improve both diagnosis and treatment in humans. STUDY FUNDING/COMPETING INTEREST(S) M.G.F. was funded by Fundação para a Ciência e Tecnologia (FCT) [SFRH/BD/78689/2011]; N.H. by China Scholarship Council (CSC) [No. 201307040026] and F.W. by Medical Personnel Training Abroad Project of Henan Province [No. 2015022] and S.M.C.d.S.L. by the Netherlands Organization of Scientific Research (NWO) [ASPASIA 015.007.037] and the Interuniversity Attraction Poles-Phase VII [IUAP/PAI P7/14]. The authors have no conflicts of interest to declare.
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Affiliation(s)
- Maria Gomes Fernandes
- Department of Anatomy and Embryology, Leiden University Medical Center, Einthovenweg 20, Leiden2333 ZC, The Netherlands
| | - Nannan He
- Department of Anatomy and Embryology, Leiden University Medical Center, Einthovenweg 20, Leiden2333 ZC, The Netherlands
| | - Fang Wang
- Department of Anatomy and Embryology, Leiden University Medical Center, Einthovenweg 20, Leiden 2333 ZC, The Netherlands.,Reproductive Medical Centre, First Affiliated Hospital Zhengzhou University, No.1 Jianshe east road, Zhengzhou 450052, China
| | - Liesbeth Van Iperen
- Department of Anatomy and Embryology, Leiden University Medical Center, Einthovenweg 20, Leiden2333 ZC, The Netherlands
| | - Cristina Eguizabal
- Cell Therapy and Stem Cells Group, Basque Centre for Blood Transfusion and Human Tissues, Barrio Labeaga s/n, Galdakao 48960, Spain
| | - Roberto Matorras
- Human Reproduction Unit, Cruces University Hospital, University of the Basque Country, Plaza de Cruces s/n, Barakaldo 48903, Spain
| | - Bernard A J Roelen
- Department of Farm Animal Health, Faculty of Veterinary Medicine, Utrecht University, Yalelaan 104, Utrecht3584 CM, The Netherlands
| | - Susana M Chuva De Sousa Lopes
- Department of Anatomy and Embryology, Leiden University Medical Center, Einthovenweg 20, Leiden 2333 ZC, The Netherlands.,Department for Reproductive Medicine, Ghent University Hospital, De Pintelaan 185, Ghent 9000, Belgium
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PIWI family emerging as a decisive factor of cell fate: An overview. Eur J Cell Biol 2017; 96:746-757. [DOI: 10.1016/j.ejcb.2017.09.004] [Citation(s) in RCA: 37] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2017] [Revised: 09/20/2017] [Accepted: 09/29/2017] [Indexed: 01/04/2023] Open
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Kabayama Y, Toh H, Katanaya A, Sakurai T, Chuma S, Kuramochi-Miyagawa S, Saga Y, Nakano T, Sasaki H. Roles of MIWI, MILI and PLD6 in small RNA regulation in mouse growing oocytes. Nucleic Acids Res 2017; 45:5387-5398. [PMID: 28115634 PMCID: PMC5435931 DOI: 10.1093/nar/gkx027] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2016] [Accepted: 01/14/2017] [Indexed: 11/13/2022] Open
Abstract
The mouse PIWI-interacting RNA (piRNA) pathway produces a class of 26–30-nucleotide (nt) small RNAs and is essential for spermatogenesis and retrotransposon repression. In oocytes, however, its regulation and function are poorly understood. In the present study, we investigated the consequences of loss of piRNA-pathway components in growing oocytes. When MILI (or PIWIL2), a PIWI family member, was depleted by gene knockout, almost all piRNAs disappeared. This severe loss of piRNA was accompanied by an increase in transcripts derived from specific retrotransposons, especially IAPs. MIWI (or PIWIL1) depletion had a smaller effect. In oocytes lacking PLD6 (or ZUCCHINI or MITOPLD), a mitochondrial nuclease/phospholipase involved in piRNA biogenesis in male germ cells, the piRNA level was decreased to 50% compared to wild-type, a phenotype much milder than that in males. Since PLD6 is essential for the creation of the 5΄ ends of primary piRNAs in males, the presence of mature piRNA in PLD6-depleted oocytes suggests the presence of compensating enzymes. Furthermore, we identified novel 21–23-nt small RNAs, termed spiRNAs, possessing a 10-nt complementarity with piRNAs, which were produced dependent on MILI and independent of DICER. Our study revealed the differences in the biogenesis and function of the piRNA pathway between sexes.
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Affiliation(s)
- Yuka Kabayama
- Division of Epigenomics and Development, Medical Institute of Bioregulation, Kyushu University, Fukuoka 812-8582, Japan.,Graduate School of Medical Sciences, Kyushu University, Fukuoka 812-8582, Japan
| | - Hidehiro Toh
- Division of Epigenomics and Development, Medical Institute of Bioregulation, Kyushu University, Fukuoka 812-8582, Japan
| | - Ami Katanaya
- Department of Development and Differentiation, Institute for Frontier Medical Sciences, Kyoto University, Kyoto 606-8507, Japan
| | - Takayuki Sakurai
- Division of Mammalian Development, Genetic Strains Research Center, National Institute of Genetics, Mishima 411-8540, Japan
| | - Shinichiro Chuma
- Department of Development and Differentiation, Institute for Frontier Medical Sciences, Kyoto University, Kyoto 606-8507, Japan
| | - Satomi Kuramochi-Miyagawa
- Department of Pathology, Medical school and Graduate School of Frontier Biosciences, Osaka University, Suita 565-0871, Japan
| | - Yumiko Saga
- Division of Mammalian Development, Genetic Strains Research Center, National Institute of Genetics, Mishima 411-8540, Japan
| | - Toru Nakano
- Department of Pathology, Medical school and Graduate School of Frontier Biosciences, Osaka University, Suita 565-0871, Japan
| | - Hiroyuki Sasaki
- Division of Epigenomics and Development, Medical Institute of Bioregulation, Kyushu University, Fukuoka 812-8582, Japan
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Russell SJ, Stalker L, Gilchrist G, Backx A, Molledo G, Foster RA, LaMarre J. Identification of PIWIL1 Isoforms and Their Expression in Bovine Testes, Oocytes, and Early Embryos. Biol Reprod 2016; 94:75. [PMID: 26911426 DOI: 10.1095/biolreprod.115.136721] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2015] [Accepted: 02/11/2016] [Indexed: 12/21/2022] Open
Abstract
PIWI proteins are members of the larger Argonaute family and bind to specific 24-32 nucleotide RNAs called PIWI-interacting RNAs (piRNAs). PIWI-interacting RNAs direct PIWI-mediated suppression of retrotransposon expression in the male germline in humans and mice, but their roles in bovine reproduction and embryogenesis are unknown. Although the majority of research in mammals has focused on the functions of PIWI proteins during spermatogenesis, this family of proteins and their associated piRNAs have recently been identified in early embryos. The goals of this study were to characterize the expression of PIWIL1 in bovine testis, oocytes, and early embryos. A full-lengthPIWIL1transcript and protein was found in the testis, specifically in the germs cells of mature seminiferous tubules. RNA-immunoprecipitation demonstrated the presence of putative piRNAs with a mean length of 30 nucleotides bound to PIWIL1 in testes. 3'-Rapid amplification of cDNA ends analysis ofPIWIL1transcripts in testes and oocytes revealed two shorter isoforms in addition to the full-length transcript that was only present in testes. TruncatedPIWIL1isoforms in oocytes and testes were confirmed through amplification of their unique intronic fragments. Expression profiling ofPIWIL1through early embryogenesis demonstrated peak mRNA expression at the 2-cell stage with decreasing levels through to the blastocyst. PIWIL1-YFP fusion plasmids were produced for each isoform and expressed in HEK 293 cells, demonstrating nuclear exclusion and size-specific banding of the different isoforms. These data represent the first comprehensive characterization of PIWIL1 in bovine, revealing functional similarities with PIWIL1 in other species and suggest tissue-specific expression of several isoforms.
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Affiliation(s)
- Stewart J Russell
- Department of Biomedical Sciences, Ontario Veterinary College, University of Guelph, Guelph, Ontario, Canada
| | - Leanne Stalker
- Department of Biomedical Sciences, Ontario Veterinary College, University of Guelph, Guelph, Ontario, Canada
| | - Graham Gilchrist
- Department of Biomedical Sciences, Ontario Veterinary College, University of Guelph, Guelph, Ontario, Canada
| | - Alanna Backx
- Department of Biomedical Sciences, Ontario Veterinary College, University of Guelph, Guelph, Ontario, Canada
| | - Gonzalo Molledo
- Department of Biomedical Sciences, Ontario Veterinary College, University of Guelph, Guelph, Ontario, Canada
| | - Robert A Foster
- Department of Pathobiology, Ontario Veterinary College, University of Guelph, Guelph, Ontario, Canada
| | - Jonathan LaMarre
- Department of Biomedical Sciences, Ontario Veterinary College, University of Guelph, Guelph, Ontario, Canada
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Gebert D, Rosenkranz D. RNA-based regulation of transposon expression. WILEY INTERDISCIPLINARY REVIEWS-RNA 2015; 6:687-708. [DOI: 10.1002/wrna.1310] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/31/2015] [Revised: 09/08/2015] [Accepted: 09/13/2015] [Indexed: 11/12/2022]
Affiliation(s)
- Daniel Gebert
- Institute of Anthropology; Johannes Gutenberg University; Mainz Germany
| | - David Rosenkranz
- Institute of Anthropology; Johannes Gutenberg University; Mainz Germany
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Roovers EF, Rosenkranz D, Mahdipour M, Han CT, He N, Chuva de Sousa Lopes SM, van der Westerlaken LAJ, Zischler H, Butter F, Roelen BAJ, Ketting RF. Piwi proteins and piRNAs in mammalian oocytes and early embryos. Cell Rep 2015; 10:2069-82. [PMID: 25818294 DOI: 10.1016/j.celrep.2015.02.062] [Citation(s) in RCA: 144] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2015] [Revised: 02/12/2015] [Accepted: 02/24/2015] [Indexed: 10/23/2022] Open
Abstract
Germ cells of most animals critically depend on piRNAs and Piwi proteins. Surprisingly, piRNAs in mouse oocytes are relatively rare and dispensable. We present compelling evidence for strong Piwi and piRNA expression in oocytes of other mammals. Human fetal oocytes express PIWIL2 and transposon-enriched piRNAs. Oocytes in adult human ovary express PIWIL1 and PIWIL2, whereas those in bovine ovary only express PIWIL1. In human, macaque, and bovine ovaries, we find piRNAs that resemble testis-borne pachytene piRNAs. Isolated bovine follicular oocytes were shown to contain abundant, relatively short piRNAs that preferentially target transposable elements. Using label-free quantitative proteome analysis, we show that these maturing oocytes strongly and specifically express the PIWIL3 protein, alongside other, known piRNA-pathway components. A piRNA pool is still present in early bovine embryos, revealing a potential impact of piRNAs on mammalian embryogenesis. Our results reveal that there are highly dynamic piRNA pathways in mammalian oocytes and early embryos.
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Affiliation(s)
- Elke F Roovers
- Biology of Non-coding RNA Group, Institute of Molecular Biology (IMB), Ackermannweg 4, 55128 Mainz, Germany
| | - David Rosenkranz
- Johannes Gutenberg-University Mainz, Institute of Anthropology, Anselm-Franz-von-Bentzel-Weg 7, 55128 Mainz, Germany
| | - Mahdi Mahdipour
- Department of Farm Animal Health, Faculty of Veterinary Medicine, Utrecht University, 3584 CM Utrecht, the Netherlands
| | - Chung-Ting Han
- Genomics Core Facility, Institute of Molecular Biology (IMB), Ackermannweg 4, 55128 Mainz, Germany
| | - Nannan He
- Department of Anatomy and Embryology, Leiden University Medical Center, Einthovenweg 20, 2333 ZA Leiden, the Netherlands
| | - Susana M Chuva de Sousa Lopes
- Department of Anatomy and Embryology, Leiden University Medical Center, Einthovenweg 20, 2333 ZA Leiden, the Netherlands
| | | | - Hans Zischler
- Johannes Gutenberg-University Mainz, Institute of Anthropology, Anselm-Franz-von-Bentzel-Weg 7, 55128 Mainz, Germany
| | - Falk Butter
- Quantitative Proteomics Group, Institute of Molecular Biology (IMB), Ackermannweg 4, 55128 Mainz, Germany
| | - Bernard A J Roelen
- Department of Farm Animal Health, Faculty of Veterinary Medicine, Utrecht University, 3584 CM Utrecht, the Netherlands
| | - René F Ketting
- Biology of Non-coding RNA Group, Institute of Molecular Biology (IMB), Ackermannweg 4, 55128 Mainz, Germany.
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Di R, He J, Song S, Tian D, Liu Q, Liang X, Ma Q, Sun M, Wang J, Zhao W, Cao G, Wang J, Yang Z, Ge Y, Chu M. Characterization and comparative profiling of ovarian microRNAs during ovine anestrus and the breeding season. BMC Genomics 2014; 15:899. [PMID: 25318541 PMCID: PMC4287553 DOI: 10.1186/1471-2164-15-899] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2014] [Accepted: 10/08/2014] [Indexed: 12/20/2022] Open
Abstract
Background Seasonal estrus is a critical limiting factor of animal fecundity, and it involves changes in both ovarian biology and hormone secretion in different seasons. Previous studies indicate that two classes of small RNAs (miRNAs and piRNAs) play important regulatory roles in ovarian biology. To understand the roles of small RNA-mediated post-transcriptional regulation in ovine seasonal estrus, the variation in expression patterns of ovarian small RNAs during anestrus and the breeding season were analyzed using Solexa sequencing technology. In addition, reproductive hormone levels were determined during ovine anestrus and the breeding season. Results A total of 483 miRNAs (including 97 known, 369 conserved and 17 predicated novel miRNAs), which belong to 183 different miRNA families, were identified in ovaries of Tan sheep and Small Tail Han (STH) sheep. Compared with the three stages of the breeding season, 25 shared significantly differentially expressed (including 19 up- and six down-regulated) miRNAs were identified in ovine anestrus. KEGG Pathway analysis revealed that the target genes for some of the differentially expressed miRNAs were involved in reproductive hormone related pathways (e.g. steroid biosynthesis, androgen and estrogen metabolism and GnRH signaling pathway) as well as follicular/luteal development related pathways. Moreover, the expression of the differentially expressed miRNAs and most of their target genes were negatively correlated in the above pathways. Furthermore, the levels of estrogen, progesterone and LH in ovine anestrus were significantly lower than those in the breeding season. Combining the results of pathway enrichment analysis, expression of target genes and hormone measurement, we suggest that these differentially expressed miRNAs in anestrus might participate in attenuation of ovarian activity by regulating the above pathways. Besides miRNAs, a large and unexpectedly diverse set of piRNAs were also identified. Conclusions The miRNA profiles of ovine ovaries in anestrus were presented for the first time. The identification and characterization of miRNAs that are differentially expressed between ovine anestrus and the breeding season will help understanding of the role of miRNAs in the regulation of seasonal estrus, and provides candidates for determining miRNAs which could be potentially used to regulate ovine seasonal estrus. Electronic supplementary material The online version of this article (doi:10.1186/1471-2164-15-899) contains supplementary material, which is available to authorized users.
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Affiliation(s)
| | | | | | | | | | | | | | | | | | | | | | | | | | | | - Mingxing Chu
- Key Laboratory of Farm Animal Genetic Resources and Germplasm Innovation of Ministry of Agriculture, Institute of Animal Science, Chinese Academy of Agricultural Sciences, No, 2, Yuanmingyuan West Rd, Beijing, China.
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Lim SL, Tsend-Ayush E, Kortschak RD, Jacob R, Ricciardelli C, Oehler MK, Grützner F. Conservation and expression of PIWI-interacting RNA pathway genes in male and female adult gonad of amniotes. Biol Reprod 2013; 89:136. [PMID: 24108303 DOI: 10.1095/biolreprod.113.111211] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023] Open
Abstract
The PIWI-interacting RNA (piRNA) pathway is essential for germline development and transposable element repression. Key elements of this pathway are members of the piRNA-binding PIWI/Argonaute protein family and associated factors (e.g., VASA, MAELSTROM, and TUDOR domain proteins). PIWI-interacting RNAs have been identified in mouse testis and oocytes, but information about the expression of the different piRNA pathway genes, in particular in the mammalian ovary, remains incomplete. We investigated the evolution and expression of piRNA pathway genes in gonads of amniote species (chicken, platypus, and mouse). Database searches confirm a high level of conservation and revealed lineage-specific gain and loss of Piwi genes in vertebrates. Expression analysis in mammals shows that orthologs of Piwi-like (Piwil) genes, Mael (Maelstrom), Mvh (mouse vasa homolog), and Tdrd1 (Tudor domain-containing protein 1) are expressed in platypus adult testis. In contrast to mouse, Piwil4 is expressed in platypus and human adult testis. We found evidence for Mael and Piwil2 expression in mouse Sertoli cells. Importantly, we show mRNA expression of Piwil2, Piwil4, and Mael in oocytes and supporting cells of human, mouse, and platypus ovary. We found no Piwil1 expression in mouse and chicken ovary. The conservation of gene expression in somatic parts of the gonad and germ cells of species that diverged over 800 million yr ago indicates an important role in adult male and female gonad.
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Affiliation(s)
- Shu Ly Lim
- The Robinson Institute, School of Molecular and Biomedical Science, The University of Adelaide, Adelaide, South Australia, Australia
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Lim AK, Lorthongpanich C, Chew TG, Tan CWG, Shue YT, Balu S, Gounko N, Kuramochi-Miyagawa S, Matzuk MM, Chuma S, Messerschmidt DM, Solter D, Knowles BB. The nuage mediates retrotransposon silencing in mouse primordial ovarian follicles. Development 2013; 140:3819-25. [PMID: 23924633 DOI: 10.1242/dev.099184] [Citation(s) in RCA: 51] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
Mobilization of endogenous retrotransposons can destabilize the genome, an imminent danger during epigenetic reprogramming of cells in the germline. The P-element-induced wimpy testis (PIWI)-interacting RNA (piRNA) pathway is known to silence retrotransposons in the mouse testes. Several piRNA pathway components localize to the unique, germline structure known as the nuage. In this study, we surveyed mouse ovaries and found, for the first time, transient appearance of nuage-like structures in oocytes of primordial follicles. Mouse vasa homolog (MVH), Piwi-like 2 (PIWIL2/MILI) and tudor domain-containing 9 (TDRD9) are present in these structures, whereas aggregates of germ cell protein with ankyrin repeats, sterile alpha motif and leucine zipper (GASZ) localize separately in the cytoplasm. Retrotransposons are silenced in primordial ovarian follicles, and de-repressed upon reduction of piRNA expression in Mvh, Mili or Gasz mutants. However, these null-mutant females, unlike their male counterparts, are fertile, uncoupling retrotransposon activation from sterility.
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Affiliation(s)
- Ai Khim Lim
- Institute of Medical Biology, A*STAR, 8A Biomedical Grove, Immunos, 138648 Singapore.
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