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Zhu Q, Ma H, Wang J, Liang X. Understanding the Mechanisms of Diminished Ovarian Reserve: Insights from Genetic Variants and Regulatory Factors. Reprod Sci 2024; 31:1521-1532. [PMID: 38347379 DOI: 10.1007/s43032-024-01467-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2023] [Accepted: 01/19/2024] [Indexed: 05/24/2024]
Abstract
Delaying childbearing age has become a trend in modern times, but it has also led to a common challenge in clinical reproductive medicine-diminished ovarian reserve (DOR). Since the mechanism behind DOR is unknown and its clinical features are complex, physicians find it difficult to provide targeted treatment. Many factors affect ovarian reserve function, and existing studies have shown that genetic variants, upstream regulatory genes, and changes in protein expression levels are present in populations with reduced ovarian reserve function. However, existing therapeutic regimens often do not target the genetic profile for more individualized treatment. In this paper, we review the types of genetic variants, mutations, altered expression levels of microRNAs, and other related factors and their effects on the regulation of follicular development, as well as altered DNA methylation. We hope this review will have significant implications for the future treatment of individuals with reduced ovarian reserve.
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Affiliation(s)
- Qinying Zhu
- The First Clinical Medical College of, Lanzhou University, Lanzhou, China
| | - Hao Ma
- The First Clinical Medical College of, Lanzhou University, Lanzhou, China
| | - Jing Wang
- Department of Obstetrics and Gynecology, The First Hospital of Lanzhou University, Lanzhou, China
| | - Xiaolei Liang
- Department of Obstetrics and Gynecology, The First Hospital of Lanzhou University, Gansu Provincial Clinical Research Center for Gynecological Oncology, No.1, Donggangxi Rd, Chengguan District, Lanzhou, 730000, China.
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2
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Caponnetto A, Ferrara C, Fazzio A, Agosta N, Scribano M, Vento ME, Borzì P, Barbagallo C, Stella M, Ragusa M, Scollo P, Barbagallo D, Purrello M, Di Pietro C, Battaglia R. A Circular RNA Derived from the Pumilio 1 Gene Could Regulate PTEN in Human Cumulus Cells. Genes (Basel) 2024; 15:124. [PMID: 38275605 PMCID: PMC10815046 DOI: 10.3390/genes15010124] [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: 11/30/2023] [Revised: 01/17/2024] [Accepted: 01/17/2024] [Indexed: 01/27/2024] Open
Abstract
CircRNAs are a class of non-coding RNAs able to regulate gene expression at multiple levels. Their involvement in physiological processes, as well as their altered regulation in different human diseases, both tumoral and non-tumoral, is well documented. However, little is known about their involvement in female reproduction. This study aims to identify circRNAs potentially involved in reproductive women's health. Candidate circRNAs expressed in ovary and sponging miRNAs, already known to be expressed in the ovary, were selected by a computational approach. Using real time PCR, we verified their expression and identified circPUM1 as the most interesting candidate circRNA for further analyses. We assessed the expression of circPUM1 and its linear counterpart in all the follicle compartments and, using a computational and experimental approach, identified circPUM1 direct and indirect targets, miRNAs and mRNAs, respectively, in cumulus cells. We found that both circPUM1 and its mRNA host gene are co-expressed in all the follicle compartments and proposed circPUM1 as a potential regulator of PTEN, finding a strong positive correlation between circPUM1 and PTEN mRNA. These results suggest a possible regulation of PTEN by circPUM1 in cumulus cells and point out the important role of circRNA inside the pathways related to follicle growth and oocyte maturation.
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Affiliation(s)
- Angela Caponnetto
- Department of Biomedical and Biotechnological Sciences, Section of Biology and Genetics “G. Sichel”, University of Catania, 95123 Catania, Italy; (C.F.); (A.F.); (C.B.); (M.S.); (M.R.); (D.B.); (M.P.); (C.D.P.); (R.B.)
| | - Carmen Ferrara
- Department of Biomedical and Biotechnological Sciences, Section of Biology and Genetics “G. Sichel”, University of Catania, 95123 Catania, Italy; (C.F.); (A.F.); (C.B.); (M.S.); (M.R.); (D.B.); (M.P.); (C.D.P.); (R.B.)
- Department of Physics and Astronomy “Ettore Majorana”, University of Catania, 95123 Catania, Italy
| | - Anna Fazzio
- Department of Biomedical and Biotechnological Sciences, Section of Biology and Genetics “G. Sichel”, University of Catania, 95123 Catania, Italy; (C.F.); (A.F.); (C.B.); (M.S.); (M.R.); (D.B.); (M.P.); (C.D.P.); (R.B.)
- Department of Physics and Astronomy “Ettore Majorana”, University of Catania, 95123 Catania, Italy
| | - Noemi Agosta
- Department of General Surgery and Medical-Surgical Specialties, University of Catania, 95123 Catania, Italy; (N.A.); (M.S.)
| | - Marianna Scribano
- Department of General Surgery and Medical-Surgical Specialties, University of Catania, 95123 Catania, Italy; (N.A.); (M.S.)
| | - Maria Elena Vento
- IVF Unit, Cannizzaro Hospital, 95123 Catania, Italy; (M.E.V.); (P.B.)
| | - Placido Borzì
- IVF Unit, Cannizzaro Hospital, 95123 Catania, Italy; (M.E.V.); (P.B.)
| | - Cristina Barbagallo
- Department of Biomedical and Biotechnological Sciences, Section of Biology and Genetics “G. Sichel”, University of Catania, 95123 Catania, Italy; (C.F.); (A.F.); (C.B.); (M.S.); (M.R.); (D.B.); (M.P.); (C.D.P.); (R.B.)
| | - Michele Stella
- Department of Biomedical and Biotechnological Sciences, Section of Biology and Genetics “G. Sichel”, University of Catania, 95123 Catania, Italy; (C.F.); (A.F.); (C.B.); (M.S.); (M.R.); (D.B.); (M.P.); (C.D.P.); (R.B.)
- Department of Physics and Astronomy “Ettore Majorana”, University of Catania, 95123 Catania, Italy
| | - Marco Ragusa
- Department of Biomedical and Biotechnological Sciences, Section of Biology and Genetics “G. Sichel”, University of Catania, 95123 Catania, Italy; (C.F.); (A.F.); (C.B.); (M.S.); (M.R.); (D.B.); (M.P.); (C.D.P.); (R.B.)
| | - Paolo Scollo
- Department of Medicine and Surgery, Kore University, 94100 Enna, Italy;
- Maternal and Child Department, Obstetrics and Gynecology Unit, Cannizzaro Hospital, 95123 Catania, Italy
| | - Davide Barbagallo
- Department of Biomedical and Biotechnological Sciences, Section of Biology and Genetics “G. Sichel”, University of Catania, 95123 Catania, Italy; (C.F.); (A.F.); (C.B.); (M.S.); (M.R.); (D.B.); (M.P.); (C.D.P.); (R.B.)
| | - Michele Purrello
- Department of Biomedical and Biotechnological Sciences, Section of Biology and Genetics “G. Sichel”, University of Catania, 95123 Catania, Italy; (C.F.); (A.F.); (C.B.); (M.S.); (M.R.); (D.B.); (M.P.); (C.D.P.); (R.B.)
| | - Cinzia Di Pietro
- Department of Biomedical and Biotechnological Sciences, Section of Biology and Genetics “G. Sichel”, University of Catania, 95123 Catania, Italy; (C.F.); (A.F.); (C.B.); (M.S.); (M.R.); (D.B.); (M.P.); (C.D.P.); (R.B.)
| | - Rosalia Battaglia
- Department of Biomedical and Biotechnological Sciences, Section of Biology and Genetics “G. Sichel”, University of Catania, 95123 Catania, Italy; (C.F.); (A.F.); (C.B.); (M.S.); (M.R.); (D.B.); (M.P.); (C.D.P.); (R.B.)
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3
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Liu L, Liu B, Li K, Wang C, Xie Y, Luo N, Wang L, Sun Y, Huang W, Cheng Z, Liu S. Identification of Biomarkers for Predicting Ovarian Reserve of Primordial Follicle via Transcriptomic Analysis. Front Genet 2022; 13:879974. [PMID: 35692832 PMCID: PMC9174591 DOI: 10.3389/fgene.2022.879974] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2022] [Accepted: 05/04/2022] [Indexed: 01/20/2023] Open
Abstract
Ovarian reserve (OR) is mainly determined by the number of primordial follicles in the ovary and continuously depleted until ovarian senescence. With the development of assisted reproductive technology such as ovarian tissue cryopreservation and autotransplantation, growing demand has arisen for objective assessment of OR at the histological level. However, no specific biomarkers of OR can be used effectively in clinic nowadays. Herein, bulk RNA-seq datasets of the murine ovary with the biological ovarian age (BOA) dynamic changes and single-cell RNA-seq datasets of follicles at different stages of folliculogenesis were obtained from the GEO database to identify gene signature correlated to the primordial follicle pool. The correlations between gene signature expression and OR were also validated in several comparative OR models. The results showed that genes including Lhx8, Nobox, Sohlh1, Tbpl2, Stk31, and Padi6 were highly correlated to the OR of the primordial follicle pool, suggesting that these genes might be used as biomarkers for predicting OR at the histological level.
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Affiliation(s)
- Li Liu
- Department of Obstetrics and Gynecology, Shanghai Tenth People’s Hospital, School of Medicine, Tongji University, Shanghai, China
- Institute of Gynecological Minimally Invasive Medicine, School of Medicine, Tongji University, Shanghai, China
| | - Biting Liu
- Department of Obstetrics and Gynecology, Shanghai Tenth People’s Hospital, School of Medicine, Tongji University, Shanghai, China
| | - Ke Li
- Department of Clinical Laboratory Medicine, Shanghai Tenth People’s Hospital, School of Medicine, Tongji University, Shanghai, China
| | - Chunyan Wang
- Department of Obstetrics and Gynecology, Shanghai Tenth People’s Hospital, School of Medicine, Tongji University, Shanghai, China
| | - Yan Xie
- Department of Obstetrics and Gynecology, Shanghai Tenth People’s Hospital, School of Medicine, Tongji University, Shanghai, China
| | - Ning Luo
- Department of Obstetrics and Gynecology, Shanghai Tenth People’s Hospital, School of Medicine, Tongji University, Shanghai, China
- Institute of Gynecological Minimally Invasive Medicine, School of Medicine, Tongji University, Shanghai, China
| | - Lian Wang
- Department of Obstetrics and Gynecology, Shanghai Tenth People’s Hospital, School of Medicine, Tongji University, Shanghai, China
- Institute of Gynecological Minimally Invasive Medicine, School of Medicine, Tongji University, Shanghai, China
| | - Yaoqi Sun
- Department of Obstetrics and Gynecology, Shanghai Tenth People’s Hospital, School of Medicine, Tongji University, Shanghai, China
- Institute of Gynecological Minimally Invasive Medicine, School of Medicine, Tongji University, Shanghai, China
| | - Wei Huang
- Department of Obstetrics and Gynecology, Shanghai Tenth People’s Hospital, School of Medicine, Tongji University, Shanghai, China
- Institute of Gynecological Minimally Invasive Medicine, School of Medicine, Tongji University, Shanghai, China
| | - Zhongping Cheng
- Department of Obstetrics and Gynecology, Shanghai Tenth People’s Hospital, School of Medicine, Tongji University, Shanghai, China
- Institute of Gynecological Minimally Invasive Medicine, School of Medicine, Tongji University, Shanghai, China
- *Correspondence: Zhongping Cheng, ; Shupeng Liu,
| | - Shupeng Liu
- Department of Obstetrics and Gynecology, Shanghai Tenth People’s Hospital, School of Medicine, Tongji University, Shanghai, China
- Institute of Gynecological Minimally Invasive Medicine, School of Medicine, Tongji University, Shanghai, China
- *Correspondence: Zhongping Cheng, ; Shupeng Liu,
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4
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Yang Y, Zhang X, Lei Y, Chang G, Zou Y, Yu S, Wu H, Rong H, Lei Z, Xu C. The effects of H22 tumor on the quality of oocytes and the development of early embryos from host mice: A single-cell RNA sequencing approach. Theriogenology 2022; 179:45-59. [PMID: 34826707 DOI: 10.1016/j.theriogenology.2021.11.006] [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: 06/19/2021] [Revised: 10/30/2021] [Accepted: 11/13/2021] [Indexed: 10/19/2022]
Abstract
The association between cancer and female reproduction remains largely unknown. Here we investigated the quality of oocytes and the developmental potential of zygotes using H22 tumor-bearing mice model. The results showed that the number of oocytes was decreased in tumor-bearing mice compared with the control mice, and accompanied scattered chromosomes was observed. Further study revealed an abnormal epigenetic reprogramming occurred in the zygotes from the H22 tumor-bearing mice, as exemplified by the aberrant 5hmC/5mC modifications in the pronuclei. Finally, single-cell RNA sequencing was performed on the oocytes collected from the H22 tumor-bearing mice. Our data showed that 45 of the 202 differentially expressed genes in tumor-bearing group were closely associated with oocyte quality. Protein interaction analysis indicated that the potential interaction among these 45 genes. Collectively, our study uncovered that the quality of oocytes and early embryonic development were affected by H22 tumor bearing via the altered expression patterns of genes related with reproduction, providing new insights into the reproductive capability of female cancer patients.
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Affiliation(s)
- Yanhong Yang
- The First Affiliated Hospital (School of Clinical Medicine), Guangdong Pharmaceutical University, Nong-Lin-Xia Road 19#, Yue-Xiu District, Guangzhou, 510080, PR China
| | - Xueying Zhang
- Guangdong Metabolic Diseases Research Center of Integrated Chinese and Western Medicine, Key Laboratory of Glucolipid Metabolic Disorder, Ministry of Education of China, Institute of Chinese Medicine, Guangdong Pharmaceutical University, Guangdong TCM Key Laboratory for Metabolic Diseases, Guangzhou, 510006, PR China; School of Traditional Chinese Medicine, Guangdong Pharmaceutical University, Guangzhou Higher Education Mega Center, Guangzhou, 510006, PR China
| | - Yuting Lei
- Guangdong Metabolic Diseases Research Center of Integrated Chinese and Western Medicine, Key Laboratory of Glucolipid Metabolic Disorder, Ministry of Education of China, Institute of Chinese Medicine, Guangdong Pharmaceutical University, Guangdong TCM Key Laboratory for Metabolic Diseases, Guangzhou, 510006, PR China
| | - Gang Chang
- Department of Biochemistry and Molecular Biology, Shenzhen University Health Science Center, Shenzhen, 518060, PR China
| | - Yan Zou
- The Reproductive Medical Center of Nanning Second People's Hospital, Nanning, 530031, PR China
| | - Siping Yu
- Guangdong Metabolic Diseases Research Center of Integrated Chinese and Western Medicine, Key Laboratory of Glucolipid Metabolic Disorder, Ministry of Education of China, Institute of Chinese Medicine, Guangdong Pharmaceutical University, Guangdong TCM Key Laboratory for Metabolic Diseases, Guangzhou, 510006, PR China; School of Traditional Chinese Medicine, Guangdong Pharmaceutical University, Guangzhou Higher Education Mega Center, Guangzhou, 510006, PR China
| | - Huijuan Wu
- Guangdong Metabolic Diseases Research Center of Integrated Chinese and Western Medicine, Key Laboratory of Glucolipid Metabolic Disorder, Ministry of Education of China, Institute of Chinese Medicine, Guangdong Pharmaceutical University, Guangdong TCM Key Laboratory for Metabolic Diseases, Guangzhou, 510006, PR China; School of Traditional Chinese Medicine, Guangdong Pharmaceutical University, Guangzhou Higher Education Mega Center, Guangzhou, 510006, PR China
| | - Hedong Rong
- Guangdong Metabolic Diseases Research Center of Integrated Chinese and Western Medicine, Key Laboratory of Glucolipid Metabolic Disorder, Ministry of Education of China, Institute of Chinese Medicine, Guangdong Pharmaceutical University, Guangdong TCM Key Laboratory for Metabolic Diseases, Guangzhou, 510006, PR China; School of Traditional Chinese Medicine, Guangdong Pharmaceutical University, Guangzhou Higher Education Mega Center, Guangzhou, 510006, PR China
| | - Zili Lei
- Guangdong Metabolic Diseases Research Center of Integrated Chinese and Western Medicine, Key Laboratory of Glucolipid Metabolic Disorder, Ministry of Education of China, Institute of Chinese Medicine, Guangdong Pharmaceutical University, Guangdong TCM Key Laboratory for Metabolic Diseases, Guangzhou, 510006, PR China.
| | - Changlong Xu
- The Reproductive Medical Center of Nanning Second People's Hospital, Nanning, 530031, PR China.
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5
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Chioccarelli T, Falco G, Cappetta D, De Angelis A, Roberto L, Addeo M, Ragusa M, Barbagallo D, Berrino L, Purrello M, Ambrosino C, Cobellis G, Pierantoni R, Chianese R, Manfrevola F. FUS driven circCNOT6L biogenesis in mouse and human spermatozoa supports zygote development. Cell Mol Life Sci 2021; 79:50. [PMID: 34936029 PMCID: PMC8739325 DOI: 10.1007/s00018-021-04054-8] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2021] [Revised: 11/10/2021] [Accepted: 11/19/2021] [Indexed: 02/06/2023]
Abstract
Circular RNA (circRNA) biogenesis requires a backsplicing reaction, promoted by inverted repeats in cis-flanking sequences and trans factors, such as RNA-binding proteins (RBPs). Among these, FUS plays a key role. During spermatogenesis and sperm maturation along the epididymis such a molecular mechanism has been poorly explored. With this in mind, we chose circCNOT6L as a study case and wild-type (WT) as well as cannabinoid receptor type-1 knock-out (Cb1−/−) male mice as animal models to analyze backsplicing mechanisms. Our results suggest that spermatozoa (SPZ) have an endogenous skill to circularize mRNAs, choosing FUS as modulator of backsplicing and under CB1 stimulation. A physical interaction between FUS and CNOT6L as well as a cooperation among FUS, RNA Polymerase II (RNApol2) and Quaking (QKI) take place in SPZ. Finally, to gain insight into FUS involvement in circCNOT6L biogenesis, FUS expression was reduced through RNA interference approach. Paternal transmission of FUS and CNOT6L to oocytes during fertilization was then assessed by using murine unfertilized oocytes (NF), one-cell zygotes (F) and murine oocytes undergoing parthenogenetic activation (PA) to exclude a maternal contribution. The role of circCNOT6L as an active regulator of zygote transition toward the 2-cell-like state was suggested using the Embryonic Stem Cell (ESC) system. Intriguingly, human SPZ exactly mirror murine SPZ.
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Affiliation(s)
- Teresa Chioccarelli
- Dipartimento di Medicina Sperimentale, Sez. Bottazzi, Università degli Studi della Campania "L. Vanvitelli", Via Costantinopoli 16, 80138, Napoli, Italy
| | - Geppino Falco
- Dipartimento di Biologia, Università di Napoli "Federico II", Napoli, Italy.,Istituto di Ricerche Genetiche Gaetano Salvatore, Biogem scarl, Ariano Irpino, Avellino, Italy
| | - Donato Cappetta
- Dipartimento di Medicina Sperimentale, Sez. Bottazzi, Università degli Studi della Campania "L. Vanvitelli", Via Costantinopoli 16, 80138, Napoli, Italy
| | - Antonella De Angelis
- Dipartimento di Medicina Sperimentale, Sez. Bottazzi, Università degli Studi della Campania "L. Vanvitelli", Via Costantinopoli 16, 80138, Napoli, Italy
| | - Luca Roberto
- Istituto di Ricerche Genetiche Gaetano Salvatore, Biogem scarl, Ariano Irpino, Avellino, Italy
| | - Martina Addeo
- Dipartimento di Biologia, Università di Napoli "Federico II", Napoli, Italy
| | - Marco Ragusa
- Dipartimento di Scienze Biomediche e Biotecnologiche, Università di Catania, Via Santa Sofia 97, 95123, Catania, Italy
| | - Davide Barbagallo
- Dipartimento di Scienze Biomediche e Biotecnologiche, Università di Catania, Via Santa Sofia 97, 95123, Catania, Italy
| | - Liberato Berrino
- Dipartimento di Medicina Sperimentale, Sez. Bottazzi, Università degli Studi della Campania "L. Vanvitelli", Via Costantinopoli 16, 80138, Napoli, Italy
| | - Michele Purrello
- Dipartimento di Scienze Biomediche e Biotecnologiche, Università di Catania, Via Santa Sofia 97, 95123, Catania, Italy
| | - Concetta Ambrosino
- Istituto di Ricerche Genetiche Gaetano Salvatore, Biogem scarl, Ariano Irpino, Avellino, Italy.,Dipartimento di Scienze e Tecnologie, Università del Sannio, Benevento, Italy
| | - Gilda Cobellis
- Dipartimento di Medicina Sperimentale, Sez. Bottazzi, Università degli Studi della Campania "L. Vanvitelli", Via Costantinopoli 16, 80138, Napoli, Italy
| | - Riccardo Pierantoni
- Dipartimento di Medicina Sperimentale, Sez. Bottazzi, Università degli Studi della Campania "L. Vanvitelli", Via Costantinopoli 16, 80138, Napoli, Italy
| | - Rosanna Chianese
- Dipartimento di Medicina Sperimentale, Sez. Bottazzi, Università degli Studi della Campania "L. Vanvitelli", Via Costantinopoli 16, 80138, Napoli, Italy.
| | - Francesco Manfrevola
- Dipartimento di Medicina Sperimentale, Sez. Bottazzi, Università degli Studi della Campania "L. Vanvitelli", Via Costantinopoli 16, 80138, Napoli, Italy
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Forecasting early onset diminished ovarian reserve for young reproductive age women. J Assist Reprod Genet 2021; 38:1853-1860. [PMID: 33786734 DOI: 10.1007/s10815-021-02155-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2020] [Accepted: 03/14/2021] [Indexed: 10/21/2022] Open
Abstract
PURPOSE To investigate the biological networks associated with DOR in young women and the subsequent molecular impact on preimplantation embryos. METHODS Whole peripheral blood was collected from patients: young women presenting with diminished ovarian reserve (DOR) and age-matched young women with normal ovarian reserve. Maternal exome sequencing was performed on the NovaSEQ 6000 and sequencing validation was completed using Taqman® SNP Genotyping Assays. Blastocyst global methylome and transcriptome sequencing were also analyzed. RESULTS Exome sequencing revealed 730 significant DNA variants observed exclusively in the young DOR patients. Bioinformatic analysis revealed a significant impact to the Glucocorticoid receptor (GR) signaling pathway and each young DOR female had an average of 6.2 deleterious DNA variants within this pathway. Additional stratification based on patient age resulted in a cut-off at 31 years for young DOR discrimination. Embryonic global methylome sequencing resulted in only a very small number of total CpG sites with methylation alterations (1,775; 0.015% of total) in the DOR group. Additionally, there was no co-localization between these limited number of altered CpG sites and significant variants, genes, or pathways. RNA sequencing also resulted in no biologically significant transcription changes between DOR blastocysts and controls. CONCLUSION GR signaling DNA variants were observed in women with early-onset DOR potentially compromising oocyte production and quality. However, no significant downstream effects on biological processes appear to impact the resulting blastocyst. The ability to forecast premature DOR for young women may allow for earlier identification and clinical intervention for this patient population.
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7
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Gura MA, Mikedis MM, Seymour KA, de Rooij DG, Page DC, Freiman RN. Dynamic and regulated TAF gene expression during mouse embryonic germ cell development. PLoS Genet 2020; 16:e1008515. [PMID: 31914128 PMCID: PMC7010400 DOI: 10.1371/journal.pgen.1008515] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2019] [Revised: 02/10/2020] [Accepted: 11/11/2019] [Indexed: 12/02/2022] Open
Abstract
Germ cells undergo many developmental transitions before ultimately becoming either eggs or sperm, and during embryonic development these transitions include epigenetic reprogramming, quiescence, and meiosis. To begin understanding the transcriptional regulation underlying these complex processes, we examined the spatial and temporal expression of TAF4b, a variant TFIID subunit required for fertility, during embryonic germ cell development. By analyzing published datasets and using our own experimental system to validate these expression studies, we determined that both Taf4b mRNA and protein are highly germ cell-enriched and that Taf4b mRNA levels dramatically increase from embryonic day 12.5–18.5. Surprisingly, additional mRNAs encoding other TFIID subunits are coordinately upregulated through this time course, including Taf7l and Taf9b. The expression of several of these germ cell-enriched TFIID genes is dependent upon Dazl and/or Stra8, known regulators of germ cell development and meiosis. Together, these data suggest that germ cells employ a highly specialized and dynamic form of TFIID to drive the transcriptional programs that underlie mammalian germ cell development. Assisted reproductive therapy and fertility preservation are increasingly used to improve human reproduction across the world, yet there are still many unanswered questions regarding what factors govern the development of eggs and sperm and how these factors work together. We previously identified a subunit of the general transcription factor TFIID, TAF4b, that is essential for fertility. However, many basic characteristics of how Taf4b and its associated TFIID family members contribute to the formation of healthy sperm and eggs in mice and humans remain unknown. In this study, we find that mouse Taf4b and several closely related TFIID subunits become highly abundant during mouse embryonic gonad development, specifically in the cells that ultimately become eggs and sperm. Here, we analyzed data from public repositories and isolated these developing cells to examine their gene expression patterns throughout embryonic development. Together these data suggest that the dynamic expression of Taf4b and other TFIID family members are dependent on the well-established reproductive cell regulators Dazl and Stra8. This understanding of Taf4b gene expression and regulation in mouse reproductive cell development is likely conserved during development of human cells and offers novel insights into the interconnectedness of the factors that govern the formation of healthy eggs and sperm.
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Affiliation(s)
- Megan A. Gura
- Brown University, MCB Graduate Program and Department of Molecular Biology, Cell Biology and Biochemistry, Providence, RI, United States of America
| | | | - Kimberly A. Seymour
- Brown University, MCB Graduate Program and Department of Molecular Biology, Cell Biology and Biochemistry, Providence, RI, United States of America
| | | | - David C. Page
- Whitehead Institute, Cambridge, MA, United States of America
- Department of Biology, Massachusetts Institute of Technology, Cambridge, MA, United States of America
- Howard Hughes Medical Institute, Whitehead Institute, Cambridge, MA, United States of America
| | - Richard N. Freiman
- Brown University, MCB Graduate Program and Department of Molecular Biology, Cell Biology and Biochemistry, Providence, RI, United States of America
- * E-mail:
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8
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Ragusa M, Barbagallo D, Chioccarelli T, Manfrevola F, Cobellis G, Di Pietro C, Brex D, Battaglia R, Fasano S, Ferraro B, Sellitto C, Ambrosino C, Roberto L, Purrello M, Pierantoni R, Chianese R. CircNAPEPLD is expressed in human and murine spermatozoa and physically interacts with oocyte miRNAs. RNA Biol 2019; 16:1237-1248. [PMID: 31135264 DOI: 10.1080/15476286.2019.1624469] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
Circular RNAs (circRNAs) have a critical role in the control of gene expression. Their function in spermatozoa (SPZ) is unknown to date. Twenty-eight genes, involved in SPZ/testicular and epididymal physiology, were given in circBase database to find which of them may generate circular transcripts. We focused on circNAPEPLDiso1, one of the circular RNA isoforms of NAPEPLD transcript, because expressed in human and murine SPZ. In order to functionally characterize circNAPEPLDiso1 as potential microRNA (miRNA) sponge, we performed circNAPEPLDiso1-miR-CATCH and then profiled the expression of 754 miRNAs, by using TaqMan® Low Density Arrays. Among them, miRNAs 146a-5p, 203a-3p, 302c-3p, 766-3p and 1260a (some of them previously shown to be expressed in the oocyte), resulted enriched in circNAPEPLDiso1-miR-CATCHed cell lysate: the network of interactions generated from their validated targets was centred on a core of genes involved in the control of cell cycle. Moreover, computational analysis of circNAPEPLDiso1 sequence also showed its potential translation in a short form of NAPEPLD protein. Interestingly, the expression analysis in murine-unfertilized oocytes revealed low and high levels of circNAPEPLDiso1 and circNAPEPLDiso2, respectively. After fertilization, circNAPEPLDiso1 expression significantly increased, instead circNAPEPLDiso2 expression appeared constant. Based on these data, we suggest that SPZ-derived circNAPEPLDiso1 physically interacts with miRNAs primarily involved in the control of cell cycle; we hypothesize that it may represent a paternal cytoplasmic contribution to the zygote and function as a miRNA decoy inside the fertilized oocytes to regulate the first stages of embryo development. This role is proposed here for the first time.
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Affiliation(s)
- Marco Ragusa
- a Dipartimento di Scienze Biomediche e Biotecnologiche, Università di Catania , Catania , Italy.,b Oasi Research Institute - IRCCS , Troina , Italy
| | - Davide Barbagallo
- a Dipartimento di Scienze Biomediche e Biotecnologiche, Università di Catania , Catania , Italy
| | - Teresa Chioccarelli
- c Dipartimento di Medicina Sperimentale, sez "F. Bottazzi", Università della Campania "Luigi Vanvitelli" , Napoli , Italy
| | - Francesco Manfrevola
- c Dipartimento di Medicina Sperimentale, sez "F. Bottazzi", Università della Campania "Luigi Vanvitelli" , Napoli , Italy
| | - Gilda Cobellis
- c Dipartimento di Medicina Sperimentale, sez "F. Bottazzi", Università della Campania "Luigi Vanvitelli" , Napoli , Italy
| | - Cinzia Di Pietro
- a Dipartimento di Scienze Biomediche e Biotecnologiche, Università di Catania , Catania , Italy
| | - Duilia Brex
- a Dipartimento di Scienze Biomediche e Biotecnologiche, Università di Catania , Catania , Italy
| | - Rosalia Battaglia
- a Dipartimento di Scienze Biomediche e Biotecnologiche, Università di Catania , Catania , Italy
| | - Silvia Fasano
- c Dipartimento di Medicina Sperimentale, sez "F. Bottazzi", Università della Campania "Luigi Vanvitelli" , Napoli , Italy
| | - Bruno Ferraro
- d UOSD di Fisiopatologia della Riproduzione, Presidio Ospedaliero di Marcianise , Caserta , Italy
| | - Carolina Sellitto
- d UOSD di Fisiopatologia della Riproduzione, Presidio Ospedaliero di Marcianise , Caserta , Italy
| | - Concetta Ambrosino
- e Dipartimento di Scienze e Tecnologie, Università del Sannio , Benevento , Italy
| | - Luca Roberto
- f IRGS, Biogem , Ariano Irpino, Avellino , Italy
| | - Michele Purrello
- a Dipartimento di Scienze Biomediche e Biotecnologiche, Università di Catania , Catania , Italy
| | - Riccardo Pierantoni
- c Dipartimento di Medicina Sperimentale, sez "F. Bottazzi", Università della Campania "Luigi Vanvitelli" , Napoli , Italy
| | - Rosanna Chianese
- c Dipartimento di Medicina Sperimentale, sez "F. Bottazzi", Università della Campania "Luigi Vanvitelli" , Napoli , Italy
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9
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Di Pietro C, Caruso S, Battaglia R, Iraci Sareri M, La Ferlita A, Strino F, Bonaventura G, Di Mauro M, Barcellona ML, Perciavalle V, Purrello M, Cianci A. MiR-27a-3p and miR-124-3p, upregulated in endometrium and serum from women affected by Chronic Endometritis, are new potential molecular markers of endometrial receptivity. Am J Reprod Immunol 2018; 80:e12858. [DOI: 10.1111/aji.12858] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2017] [Accepted: 03/27/2018] [Indexed: 12/11/2022] Open
Affiliation(s)
- Cinzia Di Pietro
- Biology and Genetics Section; Department of Biomedical and Biotechnological Sciences; University of Catania; Catania Italy
| | - Salvatore Caruso
- Department of General Surgery and Medical Surgical Specialties; University of Catania; Catania Italy
| | - Rosalia Battaglia
- Biology and Genetics Section; Department of Biomedical and Biotechnological Sciences; University of Catania; Catania Italy
| | - Marco Iraci Sareri
- Department of General Surgery and Medical Surgical Specialties; University of Catania; Catania Italy
| | - Alessandro La Ferlita
- Biology and Genetics Section; Department of Biomedical and Biotechnological Sciences; University of Catania; Catania Italy
| | - Fabrizio Strino
- Biology and Genetics Section; Department of Biomedical and Biotechnological Sciences; University of Catania; Catania Italy
| | - Gabriele Bonaventura
- Biochemistry Section; Department of Pharmaceutical Science; University of Catania; Catania Italy
| | - Maurizio Di Mauro
- Department of Clinical and Experimental Medicine; University of Catania; Catania Italy
| | - Maria Luisa Barcellona
- Biochemistry Section; Department of Pharmaceutical Science; University of Catania; Catania Italy
| | - Vincenzo Perciavalle
- Physiology Section; Department of Biomedical and Biotechnological Sciences; University of Catania; Catania Italy
| | - Michele Purrello
- Biology and Genetics Section; Department of Biomedical and Biotechnological Sciences; University of Catania; Catania Italy
| | - Antonio Cianci
- Department of General Surgery and Medical Surgical Specialties; University of Catania; Catania Italy
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10
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Wang C, Zhou B, Xia G. Mechanisms controlling germline cyst breakdown and primordial follicle formation. Cell Mol Life Sci 2017; 74:2547-2566. [PMID: 28197668 PMCID: PMC11107689 DOI: 10.1007/s00018-017-2480-6] [Citation(s) in RCA: 42] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2016] [Revised: 01/20/2017] [Accepted: 01/30/2017] [Indexed: 12/11/2022]
Abstract
In fetal females, oogonia proliferate immediately after sex determination. The progress of mitosis in oogonia proceeds so rapidly that the incompletely divided cytoplasm of the sister cells forms cysts. The oogonia will then initiate meiosis and arrest at the diplotene stage of meiosis I, becoming oocytes. Within each germline cyst, oocytes with Balbiani bodies will survive after cyst breakdown (CBD). After CBD, each oocyte is enclosed by pre-granulosa cells to form a primordial follicle (PF). Notably, the PF pool formed perinatally will be the sole lifelong oocyte source of a female. Thus, elucidating the mechanisms of CBD and PF formation is not only meaningful for solving mysteries related to ovarian development but also contributes to the preservation of reproduction. However, the mechanisms that regulate these phenomena are largely unknown. This review summarizes the progress of cellular and molecular research on these processes in mice and humans.
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Affiliation(s)
- Chao Wang
- State Key Laboratory for Agro-Biotechnology, College of Biological Science, China Agricultural University, Beijing, 100193, China
| | - Bo Zhou
- State Key Laboratory for Agro-Biotechnology, College of Biological Science, China Agricultural University, Beijing, 100193, China
| | - Guoliang Xia
- State Key Laboratory for Agro-Biotechnology, College of Biological Science, China Agricultural University, Beijing, 100193, China.
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11
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Battaglia R, Vento ME, Borzì P, Ragusa M, Barbagallo D, Arena D, Purrello M, Di Pietro C. Non-coding RNAs in the Ovarian Follicle. Front Genet 2017; 8:57. [PMID: 28553318 PMCID: PMC5427069 DOI: 10.3389/fgene.2017.00057] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2017] [Accepted: 04/26/2017] [Indexed: 01/18/2023] Open
Abstract
The mammalian ovarian follicle is the complex reproductive unit comprising germ cell, somatic cells (Cumulus and Granulosa cells), and follicular fluid (FF): paracrine communication among the different cell types through FF ensures the development of a mature oocyte ready for fertilization. This paper is focused on non-coding RNAs in ovarian follicles and their predicted role in the pathways involved in oocyte growth and maturation. We determined the expression profiles of microRNAs in human oocytes and FF by high-throughput analysis and identified 267 microRNAs in FF and 176 in oocytes. Most of these were FF microRNAs, while 9 were oocyte specific. By bioinformatic analysis, independently performed on FF and oocyte microRNAs, we identified the most significant Biological Processes and the pathways regulated by their validated targets. We found many pathways shared between the two compartments and some specific for oocyte microRNAs. Moreover, we found 41 long non-coding RNAs able to interact with oocyte microRNAs and potentially involved in the regulation of folliculogenesis. These data are important in basic reproductive research and could also be useful for clinical applications. In fact, the characterization of non-coding RNAs in ovarian follicles could improve reproductive disease diagnosis, provide biomarkers of oocyte quality in Assisted Reproductive Treatment, and allow the development of therapies for infertility disorders.
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Affiliation(s)
- Rosalia Battaglia
- Section of Biology and Genetics G. Sichel, Department of Biomedical and Biotechnological Sciences, University of CataniaCatania, Italy
| | | | | | - Marco Ragusa
- Section of Biology and Genetics G. Sichel, Department of Biomedical and Biotechnological Sciences, University of CataniaCatania, Italy
| | - Davide Barbagallo
- Section of Biology and Genetics G. Sichel, Department of Biomedical and Biotechnological Sciences, University of CataniaCatania, Italy
| | - Desirée Arena
- Section of Biology and Genetics G. Sichel, Department of Biomedical and Biotechnological Sciences, University of CataniaCatania, Italy
| | - Michele Purrello
- Section of Biology and Genetics G. Sichel, Department of Biomedical and Biotechnological Sciences, University of CataniaCatania, Italy
| | - Cinzia Di Pietro
- Section of Biology and Genetics G. Sichel, Department of Biomedical and Biotechnological Sciences, University of CataniaCatania, Italy
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12
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Grive KJ, Gustafson EA, Seymour KA, Baddoo M, Schorl C, Golnoski K, Rajkovic A, Brodsky AS, Freiman RN. TAF4b Regulates Oocyte-Specific Genes Essential for Meiosis. PLoS Genet 2016; 12:e1006128. [PMID: 27341508 PMCID: PMC4920394 DOI: 10.1371/journal.pgen.1006128] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2015] [Accepted: 05/25/2016] [Indexed: 11/28/2022] Open
Abstract
TAF4b is a gonadal-enriched subunit of the general transcription factor TFIID that is implicated in promoting healthy ovarian aging and female fertility in mice and humans. To further explore the potential mechanism of TAF4b in promoting ovarian follicle development, we analyzed global gene expression at multiple time points in the human fetal ovary. This computational analysis revealed coordinate expression of human TAF4B and critical regulators and effectors of meiosis I including SYCP3, YBX2, STAG3, and DAZL. To address the functional relevance of this analysis, we turned to the embryonic Taf4b-deficient mouse ovary where, for the first time, we demonstrate, severe deficits in prophase I progression as well as asynapsis in Taf4b-deficient oocytes. Accordingly, TAF4b occupies the proximal promoters of many essential meiosis and oogenesis regulators, including Stra8, Dazl, Figla, and Nobox, and is required for their proper expression. These data reveal a novel TAF4b function in regulating a meiotic gene expression program in early mouse oogenesis, and support the existence of a highly conserved TAF4b-dependent gene regulatory network promoting early oocyte development in both mice and women.
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Affiliation(s)
- Kathryn J. Grive
- MCB Graduate Program, Brown University, Providence, Rhode Island, United States of America
| | - Eric A. Gustafson
- MCB Department, Brown University, Providence, Rhode Island, United States of America
| | - Kimberly A. Seymour
- MCB Department, Brown University, Providence, Rhode Island, United States of America
| | - Melody Baddoo
- School of Medicine, Tulane University, New Orleans, Louisiana, United States of America
| | - Christoph Schorl
- MCB Department, Brown University, Providence, Rhode Island, United States of America
| | - Kayla Golnoski
- Magee Women’s Research Institute, Pittsburgh, Pennsylvania, United States of America
| | - Aleksandar Rajkovic
- Magee Women’s Research Institute, Pittsburgh, Pennsylvania, United States of America
| | - Alexander S. Brodsky
- Department of Pathology, Rhode Island Hospital and Brown University, Providence, Rhode Island, United States of America
| | - Richard N. Freiman
- MCB Department, Brown University, Providence, Rhode Island, United States of America
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13
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Abstract
The adult mammalian ovary is devoid of definitive germline stem cells. As such, female reproductive senescence largely results from the depletion of a finite ovarian follicle pool that is produced during embryonic development. Remarkably, the crucial nature and regulation of follicle assembly and survival during embryogenesis is just coming into focus. This developmental pathway involves the coordination of meiotic progression and the breakdown of germ cell cysts into individual oocytes housed within primordial follicles. Recent evidence also indicates that genetic and environmental factors can specifically perturb primordial follicle assembly. Here, we review the cellular and molecular mechanisms by which the mammalian ovarian reserve is established, highlighting the presence of a crucial checkpoint that allows survival of only the highest-quality oocytes.
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Affiliation(s)
- Kathryn J Grive
- Brown University, MCB Graduate Program, Providence, RI 02912, USA
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14
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Grive KJ, Seymour KA, Mehta R, Freiman RN. TAF4b promotes mouse primordial follicle assembly and oocyte survival. Dev Biol 2014; 392:42-51. [PMID: 24836512 DOI: 10.1016/j.ydbio.2014.05.001] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2013] [Revised: 04/29/2014] [Accepted: 05/01/2014] [Indexed: 11/16/2022]
Abstract
Primary ovarian insufficiency (POI) affects 1% of women under the age of 40 and is associated with premature ovarian follicle depletion. TAF4b deficiency in adult female mouse models results in hallmarks of POI including stereotyped gonadotropin alterations indicative of early menopause, poor oocyte quality, and infertility. However, the precise developmental mechanisms underlying these adult deficits remain unknown. Here we show that TAF4b is required for the initial establishment of the primordial follicle reserve at birth. Ovaries derived from TAF4b-deficient mice at birth exhibit delayed germ cell cyst breakdown and a significant increase in Activated Caspase 3 staining compared to control ovaries. Culturing neonatal TAF4b-deficient ovaries with the pan-caspase inhibitor ZVAD-FMK suppresses the excessive loss of these oocytes around the time of birth. These data reveal a novel TAF4b function in orchestrating the correct timing of germ cell cyst breakdown and establishment of the primordial follicle reserve during a critical window of development.
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Affiliation(s)
| | | | - Rajvi Mehta
- Brown University, MCB Department, Providence, RI, USA
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15
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Camargos MDGRS, Lobach VNM, Pereira FAN, Lemos CNCD, Reis FM, Camargos AF. Computer-Assisted Oocyte Morphometry Before ICSI: Correlation of Oocyte Measurements With Fertilization and Embryo Development. Reprod Sci 2012; 19:306-11. [DOI: 10.1177/1933719111420884] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Affiliation(s)
- Maria das Graças R. S. Camargos
- Laboratory of Human Reproduction, Hospital das Clínicas, and Department of Obstetrics and Gynecology, Federal University of Minas Gerais, Belo Horizonte, Brazil
| | - Veronica N. M. Lobach
- Laboratory of Human Reproduction, Hospital das Clínicas, and Department of Obstetrics and Gynecology, Federal University of Minas Gerais, Belo Horizonte, Brazil
| | - Francisco A. N. Pereira
- Laboratory of Human Reproduction, Hospital das Clínicas, and Department of Obstetrics and Gynecology, Federal University of Minas Gerais, Belo Horizonte, Brazil
| | - Cláudia N. C. D. Lemos
- Laboratory of Human Reproduction, Hospital das Clínicas, and Department of Obstetrics and Gynecology, Federal University of Minas Gerais, Belo Horizonte, Brazil
| | - Fernando M. Reis
- Laboratory of Human Reproduction, Hospital das Clínicas, and Department of Obstetrics and Gynecology, Federal University of Minas Gerais, Belo Horizonte, Brazil
| | - Aroldo F. Camargos
- Laboratory of Human Reproduction, Hospital das Clínicas, and Department of Obstetrics and Gynecology, Federal University of Minas Gerais, Belo Horizonte, Brazil
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16
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Guglielmino MR, Santonocito M, Vento M, Ragusa M, Barbagallo D, Borzì P, Casciano I, Banelli B, Barbieri O, Astigiano S, Scollo P, Romani M, Purrello M, Di Pietro C. TAp73 is downregulated in oocytes from women of advanced reproductive age. Cell Cycle 2011; 10:3253-6. [PMID: 21946516 DOI: 10.4161/cc.10.19.17585] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023] Open
Abstract
Studies on oocyte transcriptome are important to understand the biological pathways involved in oogenesis, totipotence and early embryonic development. Moreover, genes regulating physiological pathways in gametes could represent potential candidates for reproductive disorders. In addition to oocyte specific transcription factors, also the members of the p53 family could be etiologically involved due to their biological functions. In fact, their role in the control of cell cycle, apoptosis, and germ-line genome stability is well known. Female reproductive aging is one of the causes of fertility reduction and it is often associated with egg aneuploidy increase. In order to verify the potential involvement of p73 in reproductive aging, we determined its expression in single mature MII oocytes from two groups of women, younger than 35 or older than 38 years, respectively. We found that TAp73 isoforms are down regulated in oocytes from women older than 38 years. We confirmed these data in pools of mouse oocytes. TAp73 down regulation in oocytes from women of advanced reproductive age could explain both the reduction of fertility and the increase of newborns with chromosomal abnormalities.
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Affiliation(s)
- Maria Rosa Guglielmino
- Dipartimento Gian Filippo Ingrassia, Biologia, Genetica, Genomica Cellulare e Molecolare Giovanni Sichel, Università degli Studi di Catania, Italy
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17
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Molecular profiling of human oocytes after vitrification strongly suggests that they are biologically comparable with freshly isolated gametes. Fertil Steril 2010; 94:2804-7. [DOI: 10.1016/j.fertnstert.2010.04.060] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2010] [Revised: 04/21/2010] [Accepted: 04/26/2010] [Indexed: 11/18/2022]
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18
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Lovasco LA, Seymour KA, Zafra K, O'Brien CW, Schorl C, Freiman RN. Accelerated ovarian aging in the absence of the transcription regulator TAF4B in mice. Biol Reprod 2009; 82:23-34. [PMID: 19684329 DOI: 10.1095/biolreprod.109.077495] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022] Open
Abstract
The mammalian ovary is unique in that its reproductive life span is limited by oocyte quantity and quality. Oocytes are recruited from a finite pool of primordial follicles that are usually exhausted from the ovary during midadult life. If regulation of this pool is perturbed, the reproductive capacity of the ovary is compromised. TAF4B is a gonad-enriched subunit of the TFIID complex required for female fertility in mice. Previous characterization of TAF4B-deficient ovaries revealed several reproductive deficits that collectively result in infertility. However, the etiology of such fertility defects remains unknown. By assaying estrous cycle, ovarian pathology, and gene expression changes in young Taf4b-null female mice, we show that TAF4B-deficient female mice exhibit premature reproductive senescence. The rapid decline of ovarian function in Taf4b-null mice begins in early postnatal life, and follicle depletion is completed by 16 wk of age. To uncover differences in gene expression that may underlie accelerated ovarian aging, we compared genome-wide expression profiles of 3-wk-old, prepubescent Taf4b-null and wild-type ovaries. At 3 wk of age, decreased gene expression in Taf4b-null ovaries is similar to that seen in aged ovaries, revealing several molecular signatures of premature reproductive senescence, including reduced Smc1b. One significantly reduced transcript in the young TAF4B-null ovary codes for MOV10L1, a putative germline-specific RNA helicase that is related to the Drosophila RNA interference protein, armitage. We show here that Mov10l1 is expressed in mouse oocytes and that its expression is sensitive to TAF4B level, linking TAF4B to the posttranscriptional control of ovarian gene expression.
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Affiliation(s)
- Lindsay A Lovasco
- Department of Molecular and Cell Biology and Biochemistry, Brown University, Providence, Rhode Island 02903, USA
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