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Wang L, Liu Y, Song Y, Mei Q, Mou H, Wu J, Tang X, Ai J, Li K, Xiao H, Han X, Lv L, Li H, Zhang L, Xiang W. Enhancing Oocyte Quality in Aging Mice: Insights from Mesenchymal Stem Cell Therapy and FOXO3a Signaling Pathway Activation. Reprod Sci 2024:10.1007/s43032-024-01509-8. [PMID: 38532230 DOI: 10.1007/s43032-024-01509-8] [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: 12/31/2023] [Accepted: 03/01/2024] [Indexed: 03/28/2024]
Abstract
Ovarian aging reduced the quality of oocytes, resulting in age-related female infertility. It is reported that mesenchymal stem cells (MSCs) therapy can improve age-related ovarian function decline and the success rate of in vitro maturation (IVM) in assisted reproductive therapy. In order to investigate the effectiveness and mechanisms of MSCs to enhance oocyte quality of cumulus oocyte complexes (COCs) in advanced age, this study focus on the respective functional improvement of oocytes and granulosa cells (GCs) from aging mice and further to explore and verify the possible mechanisms. Here, we studied a popular but significant protein of follicular development, Forkhead box O-3a (FOXO3a), which is a transcription factor that mediates a variety of cellular processes, but the functions of which in regulating oocyte quality in MSCs therapy still remain inconclusive. In this study, the RNA-seq data of metaphase II (MII) oocytes and GCs isolated from COCs confirmed that, GCs of immature follicles show the most potential to be the targeted cells of bone marrow mesenchymal stem cells (BMSCs) by FOXO3a signaling pathway. Furthermore, we demonstrated the effectiveness of BMSCs co-culture with aging COCs to enhance oocyte quality and found its mechanism to function via ameliorating the biological function of GCs by alleviating FOXO3a levels. These results provide significant fundamental research on MSCs therapy on ovarian aging, as well as offering guidance for raising the success rate of assisted reproductive technology such IVM in clinical and non-clinical settings.
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Affiliation(s)
- Lingjuan Wang
- Institute of Reproductive Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
- National Clinical Research Center for Obstetrics and Gynecology, Cancer Biology Research Center (Key Laboratory of the Ministry of Education), Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
- Reproductive Medicine Center, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Yang Liu
- Department of Obstetrics and Gynecology Reproductive Center, Beijing Friendship Hospital, Capital Medical University, Beijing, China
| | - Yinhua Song
- National Clinical Research Center for Obstetrics and Gynecology, Cancer Biology Research Center (Key Laboratory of the Ministry of Education), Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
- Reproductive Medicine Center, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Qiaojuan Mei
- Institute of Reproductive Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Hongbei Mou
- Institute of Reproductive Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Jiachen Wu
- National Clinical Research Center for Obstetrics and Gynecology, Cancer Biology Research Center (Key Laboratory of the Ministry of Education), Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Xinyu Tang
- National Clinical Research Center for Obstetrics and Gynecology, Cancer Biology Research Center (Key Laboratory of the Ministry of Education), Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Jihui Ai
- National Clinical Research Center for Obstetrics and Gynecology, Cancer Biology Research Center (Key Laboratory of the Ministry of Education), Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
- Reproductive Medicine Center, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Kezhen Li
- National Clinical Research Center for Obstetrics and Gynecology, Cancer Biology Research Center (Key Laboratory of the Ministry of Education), Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Houxiu Xiao
- Wuhan National High Magnetic Field Center, Huazhong University of Science and Technology, Wuhan, China
| | - Xiaotao Han
- Wuhan National High Magnetic Field Center, Huazhong University of Science and Technology, Wuhan, China
| | - Liqun Lv
- Wuhan Kangjian Maternal and Infant Hospital, Wuhan, China
| | - Huaibiao Li
- Institute of Reproductive Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Ling Zhang
- Institute of Reproductive Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.
| | - Wenpei Xiang
- Institute of Reproductive Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.
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Yang L, Shang J, Wang H, Ma J, Wang L, Ma Y, Shuo J, Xu X, Cheng R, Duan X, Zhang Q. Promising anti-ovarian aging herbal formulation He's Yangchao promotes in vitro maturation of oocytes from advanced maternal age mice. JOURNAL OF ETHNOPHARMACOLOGY 2024; 318:116890. [PMID: 37423514 DOI: 10.1016/j.jep.2023.116890] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/23/2023] [Revised: 07/05/2023] [Accepted: 07/07/2023] [Indexed: 07/11/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Marveled at the discovery of artemisinin, the world's expectations for traditional Chinese medicine are rising. He's Yangchao formula (HSYC) is a traditional Chinese herbal formula with the effects of tonifying kidney and essence, and reconciling yin and yang. It has been clinically proven to have anti-ovarian aging effects. Age is the primary cause of diminished ovarian reserve and assisted reproductive failure in women, whether HSYC has the potential to improve in vitro maturation of oocytes from advanced maternal age (AMA) mice has yet to be determined. AIM OF THE STUDY This study aims to evaluate the efficacy and possible mechanism of HSYC in promoting in vitro maturation of oocytes from AMA mice. MATERIALS AND METHODS The GV oocytes were obtained from young and aged mice. The GV oocytes from young mice were cultured in drops of M16 medium, and the GV oocytes from AMA mice were randomly divided four groups: Vehicle group (cultured in 90% M16 medium +10% blank serum), Low HSYC group (cultured in 90% M16 medium + 10% Low HSYC-medicated serum), High-HSYC group (cultured in 90% M16 medium +10% High HSYC-medicated serum), and Quercetin group (cultured in M16 medium supplemented with 10 μM quercetin). The rates of first polar body extrusion, reactive oxygen species (ROS), intracellular calcium, and mitochondrial membrane potential levels in each groups were observed. In addition, expression levels of mitochondrial function, autophagy, DNA damage, and antioxidant-related proteins were assessed. RESULTS Supplementation of HSYC in vitro alleviated age-associated meiotic progression defects in maternally aged oocytes. Importantly, HSYC supplementation eliminated the age-related ROS accumulation to suppress DNA damage and autophagy during the in vitro maturation of maternally aged oocytes. Meanwhile, the mitochondrial function was improved after HSYC treatment, as manifested by higher mitochondrial membrane potential and lower Ca2+ levels. Furthermore, we found that HSYC supplementation during in vitro maturation of maternally aged oocytes upregulated the expression level of SIRT3, a crucial protein in regulating mitochondrial function. Consistently, the expression levels of the SOD2, PCG1α, and TFAM were increased, while the SOD2 acetylation level was decreased, which further proved its antioxidant function. CONCLUSIONS HSYC supplementation promotes in vitro maturation of oocytes from AMA mice mainly via improving mitochondrial function and alleviating oxidative stress. The mechanism may be related to the regulation of SIRT3-dependent deacetylation of the SOD2 pathway.
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Affiliation(s)
- Liuqing Yang
- Department of TCM Gynecology, Hangzhou TCM Hospital Affiliated to Zhejiang Chinese Medical University, Hangzhou, 310000, Zhejiang Province, China; Research Institute of Women's Reproductive Health, Zhejiang Chinese Medical University, No. 548 Binwen Road, Binjiang District, Hangzhou, 310053, China
| | - Jianzhou Shang
- Key Laboratory of Applied Technology on Green-Eco-Healthy Animal Husbandry of Zhejiang Province, College of Animal Science and Technology, College of Veterinary Medicine, Zhejiang A&F University, Hangzhou, 311300, China
| | - Heng Wang
- Department of TCM Gynecology, Hangzhou TCM Hospital Affiliated to Zhejiang Chinese Medical University, Hangzhou, 310000, Zhejiang Province, China
| | - Jing Ma
- Department of TCM Gynecology, Hangzhou TCM Hospital Affiliated to Zhejiang Chinese Medical University, Hangzhou, 310000, Zhejiang Province, China; Research Institute of Women's Reproductive Health, Zhejiang Chinese Medical University, No. 548 Binwen Road, Binjiang District, Hangzhou, 310053, China
| | - Ling Wang
- Zhejiang Chinese Medical University, No. 548 Binwen Road, Binjiang District, Hangzhou, 310053, China
| | - Yang Ma
- Zhejiang Chinese Medical University, No. 548 Binwen Road, Binjiang District, Hangzhou, 310053, China
| | - Jin Shuo
- Zhejiang Chinese Medical University, No. 548 Binwen Road, Binjiang District, Hangzhou, 310053, China
| | - Xiuling Xu
- Department of TCM Gynecology, Hangzhou TCM Hospital Affiliated to Zhejiang Chinese Medical University, Hangzhou, 310000, Zhejiang Province, China
| | - Ran Cheng
- Department of TCM Gynecology, Hangzhou TCM Hospital Affiliated to Zhejiang Chinese Medical University, Hangzhou, 310000, Zhejiang Province, China
| | - Xing Duan
- Key Laboratory of Applied Technology on Green-Eco-Healthy Animal Husbandry of Zhejiang Province, College of Animal Science and Technology, College of Veterinary Medicine, Zhejiang A&F University, Hangzhou, 311300, China.
| | - Qin Zhang
- Department of TCM Gynecology, Hangzhou TCM Hospital Affiliated to Zhejiang Chinese Medical University, Hangzhou, 310000, Zhejiang Province, China; Research Institute of Women's Reproductive Health, Zhejiang Chinese Medical University, No. 548 Binwen Road, Binjiang District, Hangzhou, 310053, China.
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Su Y, Yu G, Li D, Lu Y, Ren C, Xu Y, Yang Y, Zhang K, Ma T, Li Z. Identification of mitophagy-related biomarkers in human osteoporosis based on a machine learning model. Front Physiol 2024; 14:1289976. [PMID: 38260098 PMCID: PMC10800828 DOI: 10.3389/fphys.2023.1289976] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2023] [Accepted: 12/21/2023] [Indexed: 01/24/2024] Open
Abstract
Background: Osteoporosis (OP) is a chronic bone metabolic disease and a serious global public health problem. Several studies have shown that mitophagy plays an important role in bone metabolism disorders; however, its role in osteoporosis remains unclear. Methods: The Gene Expression Omnibus (GEO) database was used to download GSE56815, a dataset containing low and high BMD, and differentially expressed genes (DEGs) were analyzed. Mitochondrial autophagy-related genes (MRG) were downloaded from the existing literature, and highly correlated MRG were screened by bioinformatics methods. The results from both were taken as differentially expressed (DE)-MRG, and Gene Ontology (GO) analysis and Kyoto Encyclopedia of Genes and Genomes (KEGG) enrichment analysis were performed. Protein-protein interaction network (PPI) analysis, support vector machine recursive feature elimination (SVM-RFE), and Boruta method were used to identify DE-MRG. A receiver operating characteristic curve (ROC) was drawn, a nomogram model was constructed to determine its diagnostic value, and a variety of bioinformatics methods were used to verify the relationship between these related genes and OP, including GO and KEGG analysis, IP pathway analysis, and single-sample Gene Set Enrichment Analysis (ssGSEA). In addition, a hub gene-related network was constructed and potential drugs for the treatment of OP were predicted. Finally, the specific genes were verified by real-time quantitative polymerase chain reaction (RT-qPCR). Results: In total, 548 DEGs were identified in the GSE56815 dataset. The weighted gene co-expression network analysis(WGCNA) identified 2291 key module genes, and 91 DE-MRG were obtained by combining the two. The PPI network revealed that the target gene for AKT1 interacted with most proteins. Three MRG (NELFB, SFSWAP, and MAP3K3) were identified as hub genes, with areas under the curve (AUC) 0.75, 0.71, and 0.70, respectively. The nomogram model has high diagnostic value. GO and KEGG analysis showed that ribosome pathway and cellular ribosome pathway may be the pathways regulating the progression of OP. IPA showed that MAP3K3 was associated with six pathways, including GNRH Signaling. The ssGSEA indicated that NELFB was highly correlated with iDCs (cor = -0.390, p < 0.001). The regulatory network showed a complex relationship between miRNA, transcription factor(TF) and hub genes. In addition, 4 drugs such as vinclozolin were predicted to be potential therapeutic drugs for OP. In RT-qPCR verification, the hub gene NELFB was consistent with the results of bioinformatics analysis. Conclusion: Mitophagy plays an important role in the development of osteoporosis. The identification of three mitophagy-related genes may contribute to the early diagnosis, mechanism research and treatment of OP.
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Affiliation(s)
- Yu Su
- Honghui Hospital, Xi’an Jiaotong University, Xi’an, China
| | - Gangying Yu
- Department of International Ward (Orthopedic), Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Dongchen Li
- Honghui Hospital, Xi’an Jiaotong University, Xi’an, China
| | - Yao Lu
- Honghui Hospital, Xi’an Jiaotong University, Xi’an, China
| | - Cheng Ren
- Honghui Hospital, Xi’an Jiaotong University, Xi’an, China
| | - Yibo Xu
- Honghui Hospital, Xi’an Jiaotong University, Xi’an, China
| | - Yanling Yang
- Basic Medical College of Yan’an University, Yan’an, China
| | - Kun Zhang
- Honghui Hospital, Xi’an Jiaotong University, Xi’an, China
| | - Teng Ma
- Honghui Hospital, Xi’an Jiaotong University, Xi’an, China
| | - Zhong Li
- Honghui Hospital, Xi’an Jiaotong University, Xi’an, China
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Ducreux B, Patrat C, Trasler J, Fauque P. Transcriptomic integrity of human oocytes used in ARTs: technical and intrinsic factor effects. Hum Reprod Update 2024; 30:26-47. [PMID: 37697674 DOI: 10.1093/humupd/dmad025] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2023] [Revised: 07/04/2023] [Indexed: 09/13/2023] Open
Abstract
BACKGROUND Millions of children have been born throughout the world thanks to ARTs, the harmlessness of which has not yet been fully demonstrated. For years, efforts to evaluate the specific effects of ART have focused on the embryo; however, it is the oocyte quality that mainly dictates first and foremost the developmental potential of the future embryo. Ovarian stimulation, cryopreservation, and IVM are sometimes necessary steps to obtain a mature oocyte, but they could alter the appropriate expression of the oocyte genome. Additionally, it is likely that female infertility, environmental factors, and lifestyle have a significant influence on oocyte transcriptomic quality, which may interfere with the outcome of an ART attempt. OBJECTIVE AND RATIONALE The objective of this review is to identify transcriptomic changes in the human oocyte caused by interventions specific to ART but also intrinsic factors such as age, reproductive health issues, and lifestyle. We also provide recommendations for future good practices to be conducted when attempting ART. SEARCH METHODS An in-depth literature search was performed on PubMed to identify studies assessing the human oocyte transcriptome following ART interventions, or in the context of maternal aging, suboptimal lifestyle, or reproductive health issues. OUTCOMES ART success is susceptible to external factors, maternal aging, lifestyle factors (smoking, BMI), and infertility due to endometriosis or polycystic ovary syndrome. Indeed, all of these are likely to increase oxidative stress and alter mitochondrial processes in the foreground. Concerning ART techniques themselves, there is evidence that different ovarian stimulation regimens shape the oocyte transcriptome. The perturbation of processes related to the mitochondrion, oxidative phosphorylation, and metabolism is observed with IVM. Cryopreservation might dysregulate genes belonging to transcriptional regulation, ubiquitination, cell cycle, and oocyte growth pathways. For other ART laboratory factors such as temperature, oxygen tension, air pollution, and light, the evidence remains scarce. Focusing on genes involved in chromatin-based processes such as DNA methylation, heterochromatin modulation, histone modification, and chromatin remodeling complexes, but also genomic imprinting, we observed systematic dysregulation of such genes either after ART intervention or lifestyle exposure, as well as due to internal factors such as maternal aging and reproductive diseases. Alteration in the expression of such epigenetic regulators may be a common mechanism linked to adverse oocyte environments, explaining global transcriptomic modifications. WIDER IMPLICATIONS Many IVF factors and additional external factors have the potential to impair oocyte transcriptomic integrity, which might not be innocuous for the developing embryo. Fortunately, it is likely that such dysregulations can be minimized by adapting ART protocols or reducing adverse exposure.
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Affiliation(s)
- Bastien Ducreux
- Université Bourgogne Franche-Comtés-Equipe Génétique des Anomalies du Développement (GAD) INSERM UMR1231, Dijon, France
| | - Catherine Patrat
- Université de Paris Cité, Faculty of Medicine, Inserm 1016, Paris, France
- Department of Reproductive Biology-CECOS, aphp.centre-Université Paris Cité, Paris, France
| | - Jacquetta Trasler
- Department of Pediatrics, McGill University and Research Institute of the McGill University Health Centre, Montreal, QC, Canada
- Department of Human Genetics, McGill University and Research Institute of the McGill University Health Centre, Montreal, QC, Canada
- Department of Pharmacology & Therapeutics, McGill University and Research Institute of the McGill University Health Centre, Montreal, QC, Canada
| | - Patricia Fauque
- Université Bourgogne Franche-Comtés-Equipe Génétique des Anomalies du Développement (GAD) INSERM UMR1231, Dijon, France
- CHU Dijon Bourgogne, Laboratoire de Biologie de la Reproduction-CECOS, Dijon, France
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Ducreux B, Ferreux L, Patrat C, Fauque P. Overview of Gene Expression Dynamics during Human Oogenesis/Folliculogenesis. Int J Mol Sci 2023; 25:33. [PMID: 38203203 PMCID: PMC10778858 DOI: 10.3390/ijms25010033] [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: 11/20/2023] [Revised: 12/07/2023] [Accepted: 12/12/2023] [Indexed: 01/12/2024] Open
Abstract
The oocyte transcriptome follows a tightly controlled dynamic that leads the oocyte to grow and mature. This succession of distinct transcriptional states determines embryonic development prior to embryonic genome activation. However, these oocyte maternal mRNA regulatory events have yet to be decoded in humans. We reanalyzed human single-oocyte RNA-seq datasets previously published in the literature to decrypt the transcriptomic reshuffles ensuring that the oocyte is fully competent. We applied trajectory analysis (pseudotime) and a meta-analysis and uncovered the fundamental transcriptomic requirements of the oocyte at any moment of oogenesis until reaching the metaphase II stage (MII). We identified a bunch of genes showing significant variation in expression from primordial-to-antral follicle oocyte development and characterized their temporal regulation and their biological relevance. We also revealed the selective regulation of specific transcripts during the germinal vesicle-to-MII transition. Transcripts associated with energy production and mitochondrial functions were extensively downregulated, while those associated with cytoplasmic translation, histone modification, meiotic processes, and RNA processes were conserved. From the genes identified in this study, some appeared as sensitive to environmental factors such as maternal age, polycystic ovary syndrome, cryoconservation, and in vitro maturation. In the future, the atlas of transcriptomic changes described in this study will enable more precise identification of the transcripts responsible for follicular growth and oocyte maturation failures.
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Affiliation(s)
- Bastien Ducreux
- Université Bourgogne Franche-Comté-Equipe Génétique des Anomalies du Développement (GAD) INSERM UMR1231, 2 Rue Angélique Ducoudray, F-21000 Dijon, France;
| | - Lucile Ferreux
- Faculty of Medicine, Inserm 1016, Université de Paris Cité, F-75014 Paris, France; (L.F.); (C.P.)
- Department of Reproductive Biology-CECOS, Aphp.Centre-Université Paris Cité, Cochin, F-75014 Paris, France
| | - Catherine Patrat
- Faculty of Medicine, Inserm 1016, Université de Paris Cité, F-75014 Paris, France; (L.F.); (C.P.)
- Department of Reproductive Biology-CECOS, Aphp.Centre-Université Paris Cité, Cochin, F-75014 Paris, France
| | - Patricia Fauque
- Université Bourgogne Franche-Comté-Equipe Génétique des Anomalies du Développement (GAD) INSERM UMR1231, 2 Rue Angélique Ducoudray, F-21000 Dijon, France;
- Laboratoire de Biologie de la Reproduction-CECOS, CHU Dijon Bourgogne, 14 Rue Gaffarel, F-21000 Dijon, France
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Gou M, Li J, Yi L, Li H, Ye X, Wang H, Liu L, Sun B, Zhang S, Zhu Z, Liu J, Liu L. Reprogramming of ovarian aging epigenome by resveratrol. PNAS NEXUS 2022; 2:pgac310. [PMID: 36743471 PMCID: PMC9896145 DOI: 10.1093/pnasnexus/pgac310] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/22/2022] [Accepted: 12/23/2022] [Indexed: 12/26/2022]
Abstract
Resveratrol is an antiaging, antioxidant, and anti-inflammatory natural polyphenolic compound. Growing evidence indicates that resveratrol has potential therapeutic effects for improving aging ovarian function. However, the mechanisms underlying prolonged reproductive longevity remain elusive. We found that resveratrol ameliorates ovarian aging transcriptome, some of which are associated with specific changes in methylome. In addition to known aging transcriptome of oocytes and granulosa cells such as decline in oxidoreductase activity, metabolism and mitochondria function, and elevated DNA damage and apoptosis, actin cytoskeleton are notably downregulated with age, and these defects are mostly rescued by resveratrol. Moreover, the aging-associated hypermethylation of actin cytoskeleton is decreased by resveratrol. In contrast, deletion of Tet2, involved in DNA demethylation, abrogates resveratrol-reprogrammed ovarian aging transcriptome. Consistently, Tet2 deficiency results in additional altered pathways as shown by increased mTOR and Wnt signaling, as well as reduced DNA repair and actin cytoskeleton with mouse age. Moreover, genes associated with oxidoreductase activity and oxidation-reduction process were hypermethylated in Tet2-deficient oocytes from middle-age mice treated with resveratrol, indicating that loss of Tet2 abolishes the antioxidant effect of resveratrol. Taking together, our finding provides a comprehensive landscape of transcriptome and epigenetic changes associated with ovarian aging that can be reprogrammed by resveratrol administration, and suggests that aberrantly increased DNA methylation by Tet2 deficiency promotes additional aging epigenome that cannot be effectively restored to younger state by resveratrol.
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Affiliation(s)
| | | | | | - Huiyu Li
- Department of Genetics and Cell Biology, College of Life Science, Nankai University, Tianjin 300071, China,State Key Laboratory of Medicinal Chemical Biology, Nankai University, Tianjin, 300350, China
| | - Xiaoying Ye
- Department of Genetics and Cell Biology, College of Life Science, Nankai University, Tianjin 300071, China,State Key Laboratory of Medicinal Chemical Biology, Nankai University, Tianjin, 300350, China
| | - Huasong Wang
- Department of Genetics and Cell Biology, College of Life Science, Nankai University, Tianjin 300071, China,State Key Laboratory of Medicinal Chemical Biology, Nankai University, Tianjin, 300350, China
| | - Linlin Liu
- Department of Genetics and Cell Biology, College of Life Science, Nankai University, Tianjin 300071, China,State Key Laboratory of Medicinal Chemical Biology, Nankai University, Tianjin, 300350, China
| | - Baofa Sun
- Department of Zoology, College of Life Science, Nankai University, Tianjin 300071, China
| | - Song Zhang
- Department of Biochemistry and Molecular Biology, College of Life Science, Nankai University, Tianjin 300071, China
| | | | - Jiang Liu
- To whom correspondence should be addressed.
| | - Lin Liu
- To whom correspondence should be addressed.
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Recurrent RNA edits in human preimplantation potentially enhance maternal mRNA clearance. Commun Biol 2022; 5:1400. [PMID: 36543858 PMCID: PMC9772385 DOI: 10.1038/s42003-022-04338-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2022] [Accepted: 12/02/2022] [Indexed: 12/24/2022] Open
Abstract
Posttranscriptional modification plays an important role in key embryonic processes. Adenosine-to-inosine RNA editing, a common example of such modifications, is widespread in human adult tissues and has various functional impacts and clinical consequences. However, whether it persists in a consistent pattern in most human embryos, and whether it supports embryonic development, are poorly understood. To address this problem, we compiled the largest human embryonic editome from 2,071 transcriptomes and identified thousands of recurrent embryonic edits (>=50% chances of occurring in a given stage) for each early developmental stage. We found that these recurrent edits prefer exons consistently across stages, tend to target genes related to DNA replication, and undergo organized loss in abnormal embryos and embryos from elder mothers. In particular, these recurrent edits are likely to enhance maternal mRNA clearance, a possible mechanism of which could be introducing more microRNA binding sites to the 3'-untranslated regions of clearance targets. This study suggests a potentially important, if not indispensable, role of RNA editing in key human embryonic processes such as maternal mRNA clearance; the identified editome can aid further investigations.
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Hua L, Chen W, Meng Y, Qin M, Yan Z, Yang R, Liu Q, Wei Y, Zhao Y, Yan L, Qiao J. The combination of DNA methylome and transcriptome revealed the intergenerational inheritance on the influence of advanced maternal age. Clin Transl Med 2022; 12:e990. [PMID: 36103411 PMCID: PMC9473489 DOI: 10.1002/ctm2.990] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2022] [Revised: 07/03/2022] [Accepted: 07/08/2022] [Indexed: 11/06/2022] Open
Abstract
BACKGROUND The number of women delivering at advanced maternal age (AMA; > = 35) continuously increases in developed and high-income countries. Large cohort studies have associated AMA with increased risks of various pregnancy complications and adverse pregnancy outcomes, which raises great concerns about the adverse effect of AMA on the long-term health of offspring. Specific acquired characteristics of parents can be passed on to descendants through certain molecular mechanisms, yet the underlying connection between AMA-related alterations in parents and that in offspring remains largely uncharted. METHODS We profiled the DNA methylomes of paired parental peripheral bloods and cord bloods from 20 nuclear families, including 10 AMA and 10 Young, and additional transcriptomes of 10 paired maternal peripheral bloods and cord bloods. RESULTS We revealed that AMA induced aging-like changes in DNA methylome and gene expression in both parents and offspring. The expression changes in several genes, such as SLC28A3, were highly relevant to the disorder in DNA methylation. In addition, AMA-related differentially methylated regions (DMRs) identified in mother and offspring groups showed remarkable similarities in both genomic locations and biological functions, mainly involving neuron differentiation, metabolism, and histone modification pathways. AMA-related differentially expressed genes (DEGs) shared by mother and offspring groups were highly enriched in the processes of immune cell activation and mitotic nuclear division. We further uncovered developmental-dependent dynamics for the DNA methylation of intergenerationally correlated DMRs during pre-implantation embryonic development, as well as diverse gene expression patterns during gametogenesis and early embryonic development for those common AMA-related DEGs presenting intergenerational correlation, such as CD24. Moreover, some intergenerational DEGs, typified by HTRA3, also showed the same significant alterations in AMA MII oocyte or blastocyst. CONCLUSIONS Our results reveal potential intergenerational inheritance of both AMA-related DNA methylome and transcriptome and provide new insights to understand health problems in AMA offspring.
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Affiliation(s)
- Lingyue Hua
- Center for Reproductive MedicineDepartment of Obstetrics and GynecologyPeking University Third HospitalBeijingChina
- National Clinical Research Center for Obstetrics and Gynecology, Peking University Third HospitalBeijingChina
- Key Laboratory of Assisted Reproduction, Peking UniversityMinistry of EducationBeijingChina
- Beijing Key Laboratory of Reproductive Endocrinology and Assisted Reproductive TechnologyBeijingChina
| | - Wei Chen
- Center for Reproductive MedicineDepartment of Obstetrics and GynecologyPeking University Third HospitalBeijingChina
- National Clinical Research Center for Obstetrics and Gynecology, Peking University Third HospitalBeijingChina
- Key Laboratory of Assisted Reproduction, Peking UniversityMinistry of EducationBeijingChina
- Beijing Key Laboratory of Reproductive Endocrinology and Assisted Reproductive TechnologyBeijingChina
| | - Yan Meng
- Department of Obstetrics and GynecologyBeijing Jishuitan Hospital, Fourth Clinical College of Peking UniversityBeijingChina
| | - Meng Qin
- Center for Reproductive MedicineDepartment of Obstetrics and GynecologyPeking University Third HospitalBeijingChina
- National Clinical Research Center for Obstetrics and Gynecology, Peking University Third HospitalBeijingChina
- Key Laboratory of Assisted Reproduction, Peking UniversityMinistry of EducationBeijingChina
- Beijing Key Laboratory of Reproductive Endocrinology and Assisted Reproductive TechnologyBeijingChina
| | - Zhiqiang Yan
- Center for Reproductive MedicineDepartment of Obstetrics and GynecologyPeking University Third HospitalBeijingChina
- National Clinical Research Center for Obstetrics and Gynecology, Peking University Third HospitalBeijingChina
- Key Laboratory of Assisted Reproduction, Peking UniversityMinistry of EducationBeijingChina
- Beijing Key Laboratory of Reproductive Endocrinology and Assisted Reproductive TechnologyBeijingChina
| | - Rui Yang
- Center for Reproductive MedicineDepartment of Obstetrics and GynecologyPeking University Third HospitalBeijingChina
- National Clinical Research Center for Obstetrics and Gynecology, Peking University Third HospitalBeijingChina
- Key Laboratory of Assisted Reproduction, Peking UniversityMinistry of EducationBeijingChina
- Beijing Key Laboratory of Reproductive Endocrinology and Assisted Reproductive TechnologyBeijingChina
| | - Qiang Liu
- Center for Reproductive MedicineDepartment of Obstetrics and GynecologyPeking University Third HospitalBeijingChina
- National Clinical Research Center for Obstetrics and Gynecology, Peking University Third HospitalBeijingChina
- Key Laboratory of Assisted Reproduction, Peking UniversityMinistry of EducationBeijingChina
- Beijing Key Laboratory of Reproductive Endocrinology and Assisted Reproductive TechnologyBeijingChina
| | - Yuan Wei
- National Clinical Research Center for Obstetrics and Gynecology, Peking University Third HospitalBeijingChina
- Department of Obstetrics and GynecologyPeking University Third HospitalBeijingChina
- National Center for Healthcare Quality Management in ObstetricsBeijingChina
| | - Yangyu Zhao
- National Clinical Research Center for Obstetrics and Gynecology, Peking University Third HospitalBeijingChina
- Department of Obstetrics and GynecologyPeking University Third HospitalBeijingChina
- National Center for Healthcare Quality Management in ObstetricsBeijingChina
| | - Liying Yan
- Center for Reproductive MedicineDepartment of Obstetrics and GynecologyPeking University Third HospitalBeijingChina
- National Clinical Research Center for Obstetrics and Gynecology, Peking University Third HospitalBeijingChina
- Key Laboratory of Assisted Reproduction, Peking UniversityMinistry of EducationBeijingChina
- Beijing Key Laboratory of Reproductive Endocrinology and Assisted Reproductive TechnologyBeijingChina
| | - Jie Qiao
- Center for Reproductive MedicineDepartment of Obstetrics and GynecologyPeking University Third HospitalBeijingChina
- National Clinical Research Center for Obstetrics and Gynecology, Peking University Third HospitalBeijingChina
- Key Laboratory of Assisted Reproduction, Peking UniversityMinistry of EducationBeijingChina
- Beijing Key Laboratory of Reproductive Endocrinology and Assisted Reproductive TechnologyBeijingChina
- Department of Obstetrics and GynecologyPeking University Third HospitalBeijingChina
- Beijing Advanced Innovation Center for GenomicsBeijingChina
- Peking‐Tsinghua Center for Life SciencesPeking UniversityBeijingChina
- Research Units of Comprehensive Diagnosis and Treatment of Oocyte Maturation Arrest, Chinese Academy of Medical SciencesBeijingChina
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9
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Guo Y, Cai L, Liu X, Ma L, Zhang H, Wang B, Qi Y, Liu J, Diao F, Sha J, Guo X. Single-cell quantitative proteomic analysis of human oocyte maturation revealed high heterogeneity in in vitro matured oocytes. Mol Cell Proteomics 2022; 21:100267. [PMID: 35809850 PMCID: PMC9396076 DOI: 10.1016/j.mcpro.2022.100267] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2021] [Revised: 06/29/2022] [Accepted: 07/02/2022] [Indexed: 12/02/2022] Open
Abstract
Oocyte maturation is pertinent to the success of in vitro maturation (IVM), which is used to overcome female infertility, and produced over 5000 live births worldwide. However, the quality of human IVM oocytes has not been investigated at single-cell proteome level. Here, we quantified 2094 proteins in human oocytes during in vitro and in vivo maturation (IVO) by single-cell proteomic analysis and identified 176 differential proteins between IVO and germinal vesicle oocytes and 45 between IVM and IVO oocytes including maternal effect proteins, with potential contribution to the clinically observed decreased fertilization, implantation, and birth rates using human IVM oocytes. IVM and IVO oocytes showed separate clusters in principal component analysis, with higher inter-cell variability among IVM oocytes, and have little correlation between mRNA and protein changes during maturation. The patients with the most aberrantly expressed proteins in IVM oocytes had the lowest level of estradiol per mature follicle on trigger day. Our data provide a rich resource to evaluate effect of IVM on oocyte quality and study mechanism of oocyte maturation. Single-cell proteomic profiling of human oocytes matured in vitro and in vivo. Low correlation between protein and mRNA levels during human oocyte maturation. In vitro matured (IVM) oocytes exhibit higher heterogeneity at the proteome level. 45 differentially expressed proteins between IVM and in vivo matured (IVO) oocytes.
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Affiliation(s)
- Yueshuai Guo
- State Key Laboratory of Reproductive Medicine, Department of Histology and Embryology, Nanjing Medical University, Nanjing 210029, China
| | - Lingbo Cai
- State Key Laboratory of Reproductive Medicine, Clinical Center for Reproductive Medicine, The First Affiliated Hospital of Nanjing Medical University, Nanjing 210029, China
| | - Xiaofei Liu
- State Key Laboratory of Reproductive Medicine, Department of Histology and Embryology, Nanjing Medical University, Nanjing 210029, China
| | - Long Ma
- State Key Laboratory of Reproductive Medicine, Clinical Center for Reproductive Medicine, The First Affiliated Hospital of Nanjing Medical University, Nanjing 210029, China
| | - Hao Zhang
- State Key Laboratory of Reproductive Medicine, Department of Histology and Embryology, Nanjing Medical University, Nanjing 210029, China
| | - Bing Wang
- State Key Laboratory of Reproductive Medicine, Department of Histology and Embryology, Nanjing Medical University, Nanjing 210029, China; School of Medicine, Southeast University, Nanjing 210009, China
| | - Yaling Qi
- State Key Laboratory of Reproductive Medicine, Department of Histology and Embryology, Nanjing Medical University, Nanjing 210029, China
| | - Jiayin Liu
- State Key Laboratory of Reproductive Medicine, Clinical Center for Reproductive Medicine, The First Affiliated Hospital of Nanjing Medical University, Nanjing 210029, China
| | - Feiyang Diao
- State Key Laboratory of Reproductive Medicine, Clinical Center for Reproductive Medicine, The First Affiliated Hospital of Nanjing Medical University, Nanjing 210029, China.
| | - Jiahao Sha
- State Key Laboratory of Reproductive Medicine, Department of Histology and Embryology, Nanjing Medical University, Nanjing 210029, China.
| | - Xuejiang Guo
- State Key Laboratory of Reproductive Medicine, Department of Histology and Embryology, Nanjing Medical University, Nanjing 210029, China.
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10
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Derisoud E, Jouneau L, Dubois C, Archilla C, Jaszczyszyn Y, Legendre R, Daniel N, Peynot N, Dahirel M, Auclair-Ronzaud J, Wimel L, Duranthon V, Chavatte-Palmer P. Maternal age affects equine day 8 embryo gene expression both in trophoblast and inner cell mass. BMC Genomics 2022; 23:443. [PMID: 35705916 PMCID: PMC9199136 DOI: 10.1186/s12864-022-08593-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2022] [Accepted: 04/22/2022] [Indexed: 11/13/2022] Open
Abstract
BACKGROUND Breeding a mare until she is not fertile or even until her death is common in equine industry but the fertility decreases as the mare age increases. Embryo loss due to reduced embryo quality is partly accountable for this observation. Here, the effect of mare's age on blastocysts' gene expression was explored. Day 8 post-ovulation embryos were collected from multiparous young (YM, 6-year-old, N = 5) and older (OM, > 10-year-old, N = 6) non-nursing Saddlebred mares, inseminated with the semen of one stallion. Pure or inner cell mass (ICM) enriched trophoblast, obtained by embryo bisection, were RNA sequenced. Deconvolution algorithm was used to discriminate gene expression in the ICM from that in the trophoblast. Differential expression was analyzed with embryo sex and diameter as cofactors. Functional annotation and classification of differentially expressed genes and gene set enrichment analysis were also performed. RESULTS Maternal aging did not affect embryo recovery rate, embryo diameter nor total RNA quantity. In both compartments, the expression of genes involved in mitochondria and protein metabolism were disturbed by maternal age, although more genes were affected in the ICM. Mitosis, signaling and adhesion pathways and embryo development were decreased in the ICM of embryos from old mares. In trophoblast, ion movement pathways were affected. CONCLUSIONS This is the first study showing that maternal age affects gene expression in the equine blastocyst, demonstrating significant effects as early as 10 years of age. These perturbations may affect further embryo development and contribute to decreased fertility due to aging.
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Affiliation(s)
- Emilie Derisoud
- Université Paris-Saclay, UVSQ, INRAE, BREED, 78350, Jouy-en-Josas, France.
- Ecole Nationale Vétérinaire d'Alfort, BREED, 94700, Maisons-Alfort, France.
| | - Luc Jouneau
- Université Paris-Saclay, UVSQ, INRAE, BREED, 78350, Jouy-en-Josas, France
- Ecole Nationale Vétérinaire d'Alfort, BREED, 94700, Maisons-Alfort, France
| | - Cédric Dubois
- IFCE, Plateau technique de Chamberet, 19370, Chamberet, France
| | - Catherine Archilla
- Université Paris-Saclay, UVSQ, INRAE, BREED, 78350, Jouy-en-Josas, France
- Ecole Nationale Vétérinaire d'Alfort, BREED, 94700, Maisons-Alfort, France
| | - Yan Jaszczyszyn
- Institute for Integrative Biology of the Cell (I2BC), UMR 9198 CNRS, CEA, Paris-Sud University F-91198, Gif-sur-Yvette, France
| | - Rachel Legendre
- Institut Pasteur-Bioinformatics and Biostatistics Hub-Department of Computational Biology, Paris, France
| | - Nathalie Daniel
- Université Paris-Saclay, UVSQ, INRAE, BREED, 78350, Jouy-en-Josas, France
- Ecole Nationale Vétérinaire d'Alfort, BREED, 94700, Maisons-Alfort, France
| | - Nathalie Peynot
- Université Paris-Saclay, UVSQ, INRAE, BREED, 78350, Jouy-en-Josas, France
- Ecole Nationale Vétérinaire d'Alfort, BREED, 94700, Maisons-Alfort, France
| | - Michèle Dahirel
- Université Paris-Saclay, UVSQ, INRAE, BREED, 78350, Jouy-en-Josas, France
- Ecole Nationale Vétérinaire d'Alfort, BREED, 94700, Maisons-Alfort, France
| | | | - Laurence Wimel
- IFCE, Plateau technique de Chamberet, 19370, Chamberet, France
| | - Véronique Duranthon
- Université Paris-Saclay, UVSQ, INRAE, BREED, 78350, Jouy-en-Josas, France
- Ecole Nationale Vétérinaire d'Alfort, BREED, 94700, Maisons-Alfort, France
| | - Pascale Chavatte-Palmer
- Université Paris-Saclay, UVSQ, INRAE, BREED, 78350, Jouy-en-Josas, France.
- Ecole Nationale Vétérinaire d'Alfort, BREED, 94700, Maisons-Alfort, France.
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11
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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: 0] [Impact Index Per Article: 0] [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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12
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RETRACTED: Parallel bimodal single-cell sequencing of transcriptome and methylome provides molecular and translational insights on oocyte maturation and maternal aging. Genomics 2022; 114:110379. [PMID: 35526740 DOI: 10.1016/j.ygeno.2022.110379] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2021] [Revised: 04/11/2022] [Accepted: 05/01/2022] [Indexed: 02/04/2023]
Abstract
This article has been retracted: please see Elsevier Policy on Article Withdrawal (http://www.elsevier.com/locate/withdrawalpolicy). This article has been retracted at the request of the Editor-in-Chief. It has been brought to our attention that the authors of the article "Parallel bimodal single-cell sequencing of transcriptome and methylome provides molecular and translational insights on oocyte maturation and maternal aging" cannot agree on who should be listed as an author of the article. Further inquiry by the journal revealed that the authorship was also changed at the revision stages of the article without notifying the handling Editor, which is contrary to the journal policy on changes to authorship. The journal considers this unacceptable practice, and the Editor-in-Chief decided to retract the article.
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13
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Fang T, Wu ZW, Wang Y, Wang F, Du ZQ, Yang CX. Comparative transcriptome analysis identifies important maternal molecules and associated biological pathways for pig and human mature oocytes. Reprod Domest Anim 2022; 57:643-652. [PMID: 35244301 DOI: 10.1111/rda.14105] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2021] [Accepted: 02/28/2022] [Indexed: 12/17/2022]
Abstract
Recent researches reveal that during oocyte maturation, species-specific molecular profile exists, and has important functional roles. However, molecular differences between pig (a larger animal model for human reproduction) and human mature oocytes remain unknown. Here, by comparative transcriptome analyses of single cell RNA-seq data, we aimed to identify the common and unique maternal factors and associated biological processes between in vivo and in vitro matured pig oocytes, and between in vitro matured human and pig oocytes. Annotated protein coding mRNAs were identified in pig in vivo (11147) and in vitro (11997), and human in vitro (14491) MII oocytes, respectively. For in vivo and in vitro derived pig MII oocytes, 10551 annotated maternal mRNAs were common, mainly enriched in signaling pathways such as cell cycle, oocyte meiosis, microtubule cytoskeleton, MAPK, RNA processing/binding. Besides, in vivo (596) and in vitro (1446) pig MII-specific mRNAs and their involved signaling pathways (in vivo: Bmp, calcium-mediated signaling, PI3K-Akt; in vitro: growth factor activity, JAK-STAT, cytokine-cytokine receptor interaction, calcium signaling pathway) were also found. As for in vitro derived human and pig MII oocytes, 10285 annotated mRNAs were common, enriched in a variety of signaling pathways (cell cycle, oocyte meiosis, microtubule, AMPK, RNA splicing, protein serine/threonine kinase activity, etc). In vitro MII-specific mRNAs were found for humans (4206) and pigs (1712), which were also enriched in species-specific signaling pathways (humans: golgi related terms, transcription repressor and hormone activity; pigs: ATP biosynthetic process, G protein-coupled peptide receptor activity, animoacyl-tRNA biosynthesis), respectively. These findings improve our understanding on oocyte maturation, and also the limitations of pig model for human oocyte maturation and fertilization.
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Affiliation(s)
- Ting Fang
- College of Animal Science, Yangtze University, JingZhou, 434025, Hubei, China
| | - Zi-Wei Wu
- College of Animal Science, Yangtze University, JingZhou, 434025, Hubei, China
| | - Yi Wang
- College of Animal Science, Yangtze University, JingZhou, 434025, Hubei, China
| | - Fang Wang
- College of Animal Science, Yangtze University, JingZhou, 434025, Hubei, China
| | - Zhi-Qiang Du
- College of Animal Science, Yangtze University, JingZhou, 434025, Hubei, China
| | - Cai-Xia Yang
- College of Animal Science, Yangtze University, JingZhou, 434025, Hubei, China
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14
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Bebbere D, Coticchio G, Borini A, Ledda S. Oocyte aging: looking beyond chromosome segregation errors. J Assist Reprod Genet 2022; 39:793-800. [PMID: 35212880 PMCID: PMC9051005 DOI: 10.1007/s10815-022-02441-z] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2022] [Accepted: 02/18/2022] [Indexed: 11/30/2022] Open
Abstract
The age-associated decline in female fertility is largely ascribable to a decrease in oocyte quality. This phenomenon is multifaceted and influenced by numerous interconnected maternal and environmental factors. An increase in the rate of meiotic errors is the major cause of the decline in oocyte developmental competence. However, abnormalities in the ooplasm accumulating with age - including altered metabolism, organelle dysfunction, and aberrant gene regulation - progressively undermine oocyte quality. Stockpiling of maternal macromolecules during folliculogenesis is crucial, as oocyte competence to achieve maturation, fertilization, and the earliest phases of embryo development occur in absence of transcription. At the same time, crucial remodeling of oocyte epigenetics during oogenesis is potentially exposed to interfering factors, such as assisted reproduction technologies (ARTs) or environmental changes, whose impact may be enhanced by reproductive aging. As the effects of maternal aging on molecular mechanisms governing the function of the human oocyte remain poorly understood, studies in animal models are essential to deepen current understanding, with translational implications for human ARTs. The present mini review aims at offering an updated and consistent view of cytoplasmic alterations occurring in oocytes during aging, focusing particularly on gene and epigenetic regulation. Appreciation of these mechanisms could inspire solutions to mitigate/control the phenomenon, and thus benefit modern ARTs.
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Affiliation(s)
- Daniela Bebbere
- Department of Veterinary Medicine, University of Sassari, Sassari, Italy.
| | | | | | - Sergio Ledda
- Department of Veterinary Medicine, University of Sassari, Sassari, Italy
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15
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FAM111A Is a Novel Molecular Marker for Oocyte Aging. Biomedicines 2022; 10:biomedicines10020257. [PMID: 35203468 PMCID: PMC8869572 DOI: 10.3390/biomedicines10020257] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2021] [Revised: 01/12/2022] [Accepted: 01/17/2022] [Indexed: 11/17/2022] Open
Abstract
Aging is the main cause of decline in oocyte quality, which can further trigger the failure of assisted reproductive technology (ART). Exploring age-related genes in oocytes is an important way to investigate the molecular mechanisms involved in oocyte aging. To provide novel insight into this field, we performed a pooled analysis of publicly available datasets, using the overlapping results of two statistical methods on two Gene Expression Omnibus (GEO) datasets. The methods utilized in the current study mainly include Spearman rank correlation, the Wilcoxon signed-rank test, t-tests, Venn diagrams, Gene Ontology (GO), Protein–Protein Interaction (PPI), Gene Set Enrichment Analysis (GSEA), Gene Set Variation Analysis (GSVA), and receiver operating characteristic (ROC) curve analysis. We identified hundreds of age-related genes across different gene expression datasets of in vitro maturation-metaphase II (IVM-MII) oocytes. Age-related genes in IVM-MII oocytes were involved in the biological processes of cellular metabolism, DNA replication, and histone modifications. Among these age-related genes, FAM111A expression presented a robust correlation with age, seen in the results of different statistical methods and different datasets. FAM111A is associated with the processes of chromosome segregation and cell cycle regulation. Thus, this enzyme is potentially an interesting novel marker for the aging of oocytes, and warrants further mechanistic study.
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16
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Yang H, Kolben T, Meister S, Paul C, van Dorp J, Eren S, Kuhn C, Rahmeh M, Mahner S, Jeschke U, von Schönfeldt V. Factors Influencing the In Vitro Maturation (IVM) of Human Oocyte. Biomedicines 2021; 9:1904. [PMID: 34944731 PMCID: PMC8698296 DOI: 10.3390/biomedicines9121904] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2021] [Revised: 12/08/2021] [Accepted: 12/10/2021] [Indexed: 02/07/2023] Open
Abstract
In vitro maturation (IVM) of oocytes is a promising assisted reproductive technology (ART) deemed as a simple and safe procedure. It is mainly used in patients with impaired oocyte maturation and in fertility preservation for women facing the risk of losing fertility. However, to date, it is still not widely used in clinical practice because of its underperformance. The influencing factors, such as biphasic IVM system, culture medium, and the supplementation, have a marked effect on the outcomes of oocyte IVM. However, the role of different culture media, supplements, and follicular priming regimens in oocyte IVM have yet to be fully clarified and deserve further investigation.
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Affiliation(s)
- Huixia Yang
- Department of Obstetrics and Gynecology, University Hospital, Ludwig-Maximilians-University, 81377 Munich, Germany; (H.Y.); (T.K.); (S.M.); (C.P.); (J.v.D.); (S.E.); (C.K.); (M.R.); (S.M.); (V.v.S.)
| | - Thomas Kolben
- Department of Obstetrics and Gynecology, University Hospital, Ludwig-Maximilians-University, 81377 Munich, Germany; (H.Y.); (T.K.); (S.M.); (C.P.); (J.v.D.); (S.E.); (C.K.); (M.R.); (S.M.); (V.v.S.)
| | - Sarah Meister
- Department of Obstetrics and Gynecology, University Hospital, Ludwig-Maximilians-University, 81377 Munich, Germany; (H.Y.); (T.K.); (S.M.); (C.P.); (J.v.D.); (S.E.); (C.K.); (M.R.); (S.M.); (V.v.S.)
| | - Corinna Paul
- Department of Obstetrics and Gynecology, University Hospital, Ludwig-Maximilians-University, 81377 Munich, Germany; (H.Y.); (T.K.); (S.M.); (C.P.); (J.v.D.); (S.E.); (C.K.); (M.R.); (S.M.); (V.v.S.)
| | - Julia van Dorp
- Department of Obstetrics and Gynecology, University Hospital, Ludwig-Maximilians-University, 81377 Munich, Germany; (H.Y.); (T.K.); (S.M.); (C.P.); (J.v.D.); (S.E.); (C.K.); (M.R.); (S.M.); (V.v.S.)
| | - Sibel Eren
- Department of Obstetrics and Gynecology, University Hospital, Ludwig-Maximilians-University, 81377 Munich, Germany; (H.Y.); (T.K.); (S.M.); (C.P.); (J.v.D.); (S.E.); (C.K.); (M.R.); (S.M.); (V.v.S.)
| | - Christina Kuhn
- Department of Obstetrics and Gynecology, University Hospital, Ludwig-Maximilians-University, 81377 Munich, Germany; (H.Y.); (T.K.); (S.M.); (C.P.); (J.v.D.); (S.E.); (C.K.); (M.R.); (S.M.); (V.v.S.)
- Department of Obstetrics and Gynecology, University Hospital Augsburg, 86156 Augsburg, Germany
| | - Martina Rahmeh
- Department of Obstetrics and Gynecology, University Hospital, Ludwig-Maximilians-University, 81377 Munich, Germany; (H.Y.); (T.K.); (S.M.); (C.P.); (J.v.D.); (S.E.); (C.K.); (M.R.); (S.M.); (V.v.S.)
| | - Sven Mahner
- Department of Obstetrics and Gynecology, University Hospital, Ludwig-Maximilians-University, 81377 Munich, Germany; (H.Y.); (T.K.); (S.M.); (C.P.); (J.v.D.); (S.E.); (C.K.); (M.R.); (S.M.); (V.v.S.)
| | - Udo Jeschke
- Department of Obstetrics and Gynecology, University Hospital, Ludwig-Maximilians-University, 81377 Munich, Germany; (H.Y.); (T.K.); (S.M.); (C.P.); (J.v.D.); (S.E.); (C.K.); (M.R.); (S.M.); (V.v.S.)
- Department of Obstetrics and Gynecology, University Hospital Augsburg, 86156 Augsburg, Germany
| | - Viktoria von Schönfeldt
- Department of Obstetrics and Gynecology, University Hospital, Ludwig-Maximilians-University, 81377 Munich, Germany; (H.Y.); (T.K.); (S.M.); (C.P.); (J.v.D.); (S.E.); (C.K.); (M.R.); (S.M.); (V.v.S.)
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17
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Ntostis P, Iles D, Kokkali G, Vaxevanoglou T, Kanavakis E, Pantou A, Huntriss J, Pantos K, Picton HM. The impact of maternal age on gene expression during the GV to MII transition in euploid human oocytes. Hum Reprod 2021; 37:80-92. [PMID: 34755188 PMCID: PMC8730309 DOI: 10.1093/humrep/deab226] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2021] [Revised: 09/18/2021] [Indexed: 12/27/2022] Open
Abstract
STUDY QUESTION Are there age-related differences in gene expression during the germinal vesicle (GV) to metaphase II (MII) stage transition in euploid human oocytes? SUMMARY ANSWER A decrease in mitochondrial-related transcripts from GV to MII oocytes was observed, with a much greater reduction in MII oocytes with advanced age. WHAT IS KNOWN ALREADY Early embryonic development is dependent on maternal transcripts accumulated and stored within the oocyte during oogenesis. Transcriptional activity of the oocyte, which dictates its ultimate developmental potential, may be influenced by age and explain the reduced competence of advanced maternal age (AMA) oocytes compared with the young maternal age (YMA). Gene expression has been studied in human and animal oocytes; however, RNA sequencing could provide further insights into the transcriptome profiling of GV and in vivo matured MII euploid oocytes of YMA and AMA patients. STUDY DESIGN, SIZE, DURATION Fifteen women treated for infertility in a single IVF unit agreed to participate in this study. Five GV and 5 MII oocytes from 6, 21-26 years old women (YMA cohort) and 5 GV and 6 MII oocytes from 6, 41-44 years old women (AMA cohort) undergoing IVF treatment were donated. The samples were collected within a time frame of 4 months. RNA was isolated and deep sequenced at the single-cell level. All donors provided either GV or MII oocytes. PARTICIPANTS/MATERIALS, SETTING, METHODS Cumulus dissection from donated oocytes was performed 38 h after hCG injection, denuded oocytes were inserted into lysis buffer supplemented with RNase inhibitor. The samples were stored at -80°C until further use. Isolated RNA from GV and MII oocytes underwent library preparation using an oligo deoxy-thymidine (dT) priming approach (SMART-Seq v4 Ultra Low Input RNA assay; Takara Bio, Japan) and Nextera XT DNA library preparation assay (Illumina, USA) followed by deep sequencing. Data processing, quality assessment and bioinformatics analysis were performed using source-software, mainly including FastQC, HISAT2, StringTie and edgeR, along with functional annotation analysis, while scploid R package was employed to determine the ploidy status. MAIN RESULTS AND THE ROLE OF CHANCE Following deep sequencing of single GV and MII oocytes in both YMA and AMA cohorts, several hundred transcripts were found to be expressed at significantly different levels. When YMA and AMA MII oocyte transcriptomes were compared, the most significant of these were related to mitochondrial structure and function, including biological processes, mitochondrial respiratory chain complex I assembly and mitochondrial translational termination (false discovery rate (FDR) 6.0E-10 to 1.2E-7). These results indicate a higher energy potential of the YMA MII cohort that is reduced with ageing. Other biological processes that were significantly higher in the YMA MII cohort included transcripts involved in the translation process (FDR 1.9E-2). Lack of these transcripts could lead to inappropriate protein synthesis prior to or upon fertilisation of the AMA MII oocytes. LARGE SCALE DATA The RNA sequencing data were deposited in the Gene Expression Omnibus (https://www.ncbi.nlm.nih.gov/geo), under the accession number: GSE164371. LIMITATIONS, REASONS FOR CAUTION The relatively small sample size could be a reason for caution. However, the RNA sequencing results showed homogeneous clustering with low intra-group variation and five to six biological replicates derived from at least three different women per group minimised the potential impact of the sample size. WIDER IMPLICATIONS OF THE FINDINGS Understanding the effects of ageing on the oocyte transcriptome could highlight the mechanisms involved in GV to MII transition and identify biomarkers that characterise good MII oocyte quality. This knowledge has the potential to guide IVF regimes for AMA patients. STUDY FUNDING/COMPETING INTEREST(S) This work was supported by the Medical Research Council (MRC Grant number MR/K020501/1).
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Affiliation(s)
- P Ntostis
- Discovery and Translational Science Department, Leeds Institute of Cardiovascular and Metabolic Medicine, University of Leeds, Leeds, UK
| | - D Iles
- Discovery and Translational Science Department, Leeds Institute of Cardiovascular and Metabolic Medicine, University of Leeds, Leeds, UK
| | - G Kokkali
- Genesis Athens Clinic, Reproductive Medicine Unit, Athens, Greece
| | - T Vaxevanoglou
- Genesis Athens Clinic, Reproductive Medicine Unit, Athens, Greece
| | - E Kanavakis
- Genesis Athens Clinic, Reproductive Medicine Unit, Athens, Greece
| | - A Pantou
- Genesis Athens Clinic, Reproductive Medicine Unit, Athens, Greece
| | - J Huntriss
- Discovery and Translational Science Department, Leeds Institute of Cardiovascular and Metabolic Medicine, University of Leeds, Leeds, UK
| | - K Pantos
- Genesis Athens Clinic, Reproductive Medicine Unit, Athens, Greece
| | - H M Picton
- Genesis Genoma Laboratory, Athens, Greece
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18
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Cornet-Bartolomé D, Barragán M, Zambelli F, Ferrer-Vaquer A, Tiscornia G, Balcells S, Rodriguez A, Grinberg D, Vassena R. Human oocyte meiotic maturation is associated with a specific profile of alternatively spliced transcript isoforms. Mol Reprod Dev 2021; 88:605-617. [PMID: 34374462 DOI: 10.1002/mrd.23526] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2021] [Revised: 06/03/2021] [Accepted: 07/31/2021] [Indexed: 12/12/2022]
Abstract
The transition from a transcriptionally active state (GV) to a transcriptionally inactive state (mature MII oocytes) is required for the acquisition of oocyte developmental competence. We hypothesize that the expression of specific genes at the in vivo matured (MII) stage could be modulated by posttranscriptional mechanisms, particularly regulation of alternative splicing (AS). In this study, we examined the transcriptional activity of GV oocytes after ovarian stimulation followed by oocyte pick-up and the landscape of alternatively spliced isoforms in human MII oocytes. Individual oocytes were processed and analyzed for transcriptional activity (GV), gene expression (GV and MII), and AS signatures (GV and MII) on HTA 2.0 microarrays. Samples were grouped according to maturation stage, and then subgrouped according to women's age and antral follicular count (AFC); array results were validated by quantitative polymerase chain reaction. Differentially expressed genes between GV and MII oocytes clustered mainly in biological processes related to mitochondrial metabolism. Interestingly, 16 genes that were related to the regulation of transcription and mitochondrial translation showed differences in alternatively spliced isoform profiles despite not being differentially expressed between groups. Altogether, our results contribute to our understanding of the role of AS in oocyte developmental competence acquisition.
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Affiliation(s)
- David Cornet-Bartolomé
- EUGIN, Barcelona, Spain.,Department of Genetics, Microbiology and Statistic, Universitat de Barcelona. CIBERER, IBUB, IRSJD, Barcelona, Spain
| | | | | | | | - Gustavo Tiscornia
- EUGIN, Barcelona, Spain.,Centro Ciencias del Mar, University of Algarve, Portugal
| | - Susanna Balcells
- Department of Genetics, Microbiology and Statistic, Universitat de Barcelona. CIBERER, IBUB, IRSJD, Barcelona, Spain
| | | | - Daniel Grinberg
- Department of Genetics, Microbiology and Statistic, Universitat de Barcelona. CIBERER, IBUB, IRSJD, Barcelona, Spain
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19
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Lee AWT, Ng JKW, Liao J, Luk AC, Suen AHC, Chan TTH, Cheung MY, Chu HT, Tang NLS, Zhao MP, Lian Q, Chan WY, Chan DYL, Leung TY, Chow KL, Wang W, Wang LH, Chen NCH, Yang WJ, Huang JY, Li TC, Lee TL. Single-cell RNA sequencing identifies molecular targets associated with poor in vitro maturation performance of oocytes collected from ovarian stimulation. Hum Reprod 2021; 36:1907-1921. [PMID: 34052851 DOI: 10.1093/humrep/deab100] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2020] [Revised: 03/08/2021] [Indexed: 12/14/2022] Open
Abstract
STUDY QUESTION What is the transcriptome signature associated with poor performance of rescue IVM (rIVM) oocytes and how can we rejuvenate them? SUMMARY ANSWER The GATA-1/CREB1/WNT signalling axis was repressed in rIVM oocytes, particularly those of poor quality; restoration of this axis may produce more usable rIVM oocytes. WHAT IS KNOWN ALREADY rIVM aims to produce mature oocytes (MII) for IVF through IVM of immature oocytes collected from stimulated ovaries. It is not popular due to limited success rate in infertility treatment. Genetic aberrations, cellular stress and the absence of cumulus cell support in oocytes could account for the failure of rIVM. STUDY DESIGN, SIZE, DURATION We applied single-cell RNA sequencing (scRNA-seq) to capture the transcriptomes of human in vivo oocytes (IVO) (n = 10) from 7 donors and rIVM oocytes (n = 10) from 10 donors. The effects of maternal age and ovarian responses on rIVM oocyte transcriptomes were also studied. In parallel, we studied the effect of gallic acid on the maturation rate of mouse oocytes cultured in IVM medium with (n = 84) and without (n = 85) gallic acid. PARTICIPANTS/MATERIALS, SETTING, METHODS Human oocytes were collected from donors aged 28-41 years with a body mass index of <30. RNA extraction, cDNA generation, library construction and sequencing were performed in one preparation. scRNA-seq data were then processed and analysed. Selected genes in the rIVM versus IVO comparison were validated by quantitative real-time PCR. For the gallic acid study, we collected immature oocytes from 5-month-old mice and studied the effect of 10-μM gallic acid on their maturation rate. MAIN RESULTS AND THE ROLE OF CHANCE The transcriptome profiles of rIVM/IVO oocytes showed distinctive differences. A total of 1559 differentially expressed genes (DEGs, genes with at least 2-fold change and adjusted P < 0.05) were found to be enriched in metabolic processes, biosynthesis and oxidative phosphorylation. Among these DEGs, we identified a repression of WNT/β-catenin signalling in rIVM when compared with IVO oocytes. We found that oestradiol levels exhibited a significant age-independent correlation with the IVO mature oocyte ratio (MII ratio) for each donor. rIVM oocytes from women with a high MII ratio were found to have over-represented cellular processes such as anti-apoptosis. To further identify targets that contribute to the poor clinical outcomes of rIVM, we compared oocytes collected from young donors with a high MII ratio with oocytes from donors of advanced maternal age and lower MII ratio, and revealed that CREB1 is an important regulator. Thus, our study identified that GATA-1/CREB1/WNT signalling was repressed in both rIVM oocytes versus IVO oocytes and in rIVM oocytes of lower versus higher quality. Consequently we investigated gallic acid, as a potential antioxidant substrate in human rIVM medium, and found that it increased the mouse oocyte maturation rate by 31.1%. LARGE SCALE DATA Raw data from this study can be accessed through GSE158539. LIMITATIONS, REASONS FOR CAUTION In the rIVM oocytes of the high- and low-quality comparison, the number of samples was limited after data filtering with stringent selection criteria. For the oocyte stage identification, we were unable to predict the presence of oocyte spindle, so polar body extrusion was the only indicator. WIDER IMPLICATIONS OF THE FINDINGS This study showed that GATA-1/CREB1/WNT signalling was repressed in rIVM oocytes compared with IVO oocytes and was further downregulated in low-quality rIVM oocytes, providing us the foundation of subsequent follow-up research on human oocytes and raising safety concerns about the clinical use of rescued oocytes. STUDY FUNDING/COMPETING INTEREST(S) This work was supported by the Collaborative Research Fund, Research Grants Council, C4054-16G, and Research Committee Funding (Research Sustainability of Major RGC Funding Schemes), The Chinese University of Hong Kong. The authors have no conflicts of interest to declare.
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Affiliation(s)
- A W T Lee
- Developmental and Regenerative Biology Program, School of Biomedical Sciences, The Chinese University of Hong Kong, Shatin, N.T., Hong Kong SAR, PR China
| | - J K W Ng
- Developmental and Regenerative Biology Program, School of Biomedical Sciences, The Chinese University of Hong Kong, Shatin, N.T., Hong Kong SAR, PR China
| | - J Liao
- Developmental and Regenerative Biology Program, School of Biomedical Sciences, The Chinese University of Hong Kong, Shatin, N.T., Hong Kong SAR, PR China
| | - A C Luk
- Developmental and Regenerative Biology Program, School of Biomedical Sciences, The Chinese University of Hong Kong, Shatin, N.T., Hong Kong SAR, PR China
| | - A H C Suen
- Developmental and Regenerative Biology Program, School of Biomedical Sciences, The Chinese University of Hong Kong, Shatin, N.T., Hong Kong SAR, PR China
| | - T T H Chan
- Developmental and Regenerative Biology Program, School of Biomedical Sciences, The Chinese University of Hong Kong, Shatin, N.T., Hong Kong SAR, PR China
| | - M Y Cheung
- Developmental and Regenerative Biology Program, School of Biomedical Sciences, The Chinese University of Hong Kong, Shatin, N.T., Hong Kong SAR, PR China
| | - H T Chu
- Developmental and Regenerative Biology Program, School of Biomedical Sciences, The Chinese University of Hong Kong, Shatin, N.T., Hong Kong SAR, PR China
| | - N L S Tang
- Department of Chemical Pathology, and Li Ka Shing Institute of Health Sciences, The Chinese University of Hong Kong, Shatin, N.T., Hong Kong SAR, PR China
| | - M P Zhao
- Assisted Reproductive Technology Unit, Department of Obstetrics and Gynaecology, Faculty of Medicine, The Chinese University of Hong Kong, Shatin, N.T., Hong Kong SAR, PR China
| | - Q Lian
- Department of Medicine, The University of Hong Kong, Hong Kong SAR, PR China
| | - W Y Chan
- Developmental and Regenerative Biology Program, School of Biomedical Sciences, The Chinese University of Hong Kong, Shatin, N.T., Hong Kong SAR, PR China
| | - D Y L Chan
- Assisted Reproductive Technology Unit, Department of Obstetrics and Gynaecology, Faculty of Medicine, The Chinese University of Hong Kong, Shatin, N.T., Hong Kong SAR, PR China
| | - T Y Leung
- Department of Medicine, The University of Hong Kong, Hong Kong SAR, PR China
| | - K L Chow
- Department of Obstetrics and Gynaecology, The Chinese University of Hong Kong, Prince of Wales Hospital, Shatin, N.T., Hong Kong SAR, PR China.,Division of Life Science, Hong Kong University of Science and Technology, Shatin, N.T., Hong Kong SAR, PR China
| | - W Wang
- Department of Obstetrics and Gynecology, IVF Center, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, Guangdong, China
| | - L H Wang
- Institute of Molecular and Cellular Biology & Department of Medical Sciences, National Tsing Hua University, Hsinchu, Taiwan
| | - N C H Chen
- Department of Infertility and Reproductive Medicine, Taiwan IVF Group Center, Hsinchu City, Taiwan
| | - W J Yang
- Department of Infertility and Reproductive Medicine, Taiwan IVF Group Center, Hsinchu City, Taiwan
| | - J Y Huang
- Department of Infertility and Reproductive Medicine, Taiwan IVF Group Center, Hsinchu City, Taiwan
| | - T C Li
- Assisted Reproductive Technology Unit, Department of Obstetrics and Gynaecology, Faculty of Medicine, The Chinese University of Hong Kong, Shatin, N.T., Hong Kong SAR, PR China
| | - T L Lee
- Developmental and Regenerative Biology Program, School of Biomedical Sciences, The Chinese University of Hong Kong, Shatin, N.T., Hong Kong SAR, PR China
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20
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Karavani G, Wasserzug-Pash P, Mordechai-Daniel T, Bauman D, Klutstein M, Imbar T. Age-Dependent in vitro Maturation Efficacy of Human Oocytes - Is There an Optimal Age? Front Cell Dev Biol 2021; 9:667682. [PMID: 34222236 PMCID: PMC8250136 DOI: 10.3389/fcell.2021.667682] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2021] [Accepted: 05/31/2021] [Indexed: 11/13/2022] Open
Abstract
In vitro maturation of oocytes from antral follicles seen during tissue harvesting is a fertility preservation technique with potential advantages over ovarian tissue cryopreservation (OTC), as mature frozen and later thawed oocyte used for fertilization poses decreased risk of malignant cells re-seeding, as compared to ovarian tissue implantation. We previously demonstrated that in vitro maturation (IVM) performed following OTC in fertility preservation patients, even in pre-menarche girls, yields a fair amount of oocytes available for IVM and freezing for future use. We conducted a retrospective cohort study, evaluating IVM outcomes in chemotherapy naïve patients referred for fertility preservation by OTC that had oocyte collected from the medium with attempted IVM. A total of 133 chemotherapy naïve patients aged 1-35 years were included in the study. The primary outcome was IVM rate in the different age groups - pre-menarche (1-5 and ≥6 years), post-menarche (menarche-17 years), young adults (18-24 years) and adults (25-29 and 30-35 years). We demonstrate a gradual increase in mean IVM rate in the age groups from 1 to 25 years [4.6% (1-5 years), 23.8% (6 years to menarche), and 28.4% (menarche to 17 years)], with a peak of 38.3% in the 18-24 years group, followed by a decrease in the 25-29 years group (19.3%), down to a very low IVM rate (8.9%) in the 30-35 years group. A significant difference in IVM rates was noted between the age extremes - the very young (1-5 years) and the oldest (30-35 years) groups, as compared with the 18-24-year group (p < 0.001). Importantly, number of oocytes matured, percent of patients with matured oocytes, and overall maturation rate differed significantly (p < 0.001). Our finding of extremely low success rates in those very young (under 6 years) and older (≥30 years) patients suggests that oocytes retrieved during OTC prior to chemotherapy have an optimal window of age that shows higher success rates, suggesting that oocytes may have an inherent tendency toward better maturation in those age groups.
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Affiliation(s)
- Gilad Karavani
- Fertility Preservation Service, Department of Obstetrics and Gynecology, Hadassah Ein Kerem Medical Center and Faculty of Medicine, The Hebrew University of Jerusalem, Jerusalem, Israel
| | - Peera Wasserzug-Pash
- Institute of Biomedical and Oral Research, Faculty of Dental Medicine, The Hebrew University of Jerusalem, Jerusalem, Israel
| | - Talya Mordechai-Daniel
- Fertility Preservation Service, Department of Obstetrics and Gynecology, Hadassah Ein Kerem Medical Center and Faculty of Medicine, The Hebrew University of Jerusalem, Jerusalem, Israel
| | - Dvora Bauman
- Fertility Preservation Service, Department of Obstetrics and Gynecology, Hadassah Ein Kerem Medical Center and Faculty of Medicine, The Hebrew University of Jerusalem, Jerusalem, Israel
| | - Michael Klutstein
- Institute of Biomedical and Oral Research, Faculty of Dental Medicine, The Hebrew University of Jerusalem, Jerusalem, Israel
| | - Tal Imbar
- Fertility Preservation Service, Department of Obstetrics and Gynecology, Hadassah Ein Kerem Medical Center and Faculty of Medicine, The Hebrew University of Jerusalem, Jerusalem, Israel
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21
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Llonch S, Barragán M, Nieto P, Mallol A, Elosua‐Bayes M, Lorden P, Ruiz S, Zambelli F, Heyn H, Vassena R, Payer B. Single human oocyte transcriptome analysis reveals distinct maturation stage-dependent pathways impacted by age. Aging Cell 2021; 20:e13360. [PMID: 33908703 PMCID: PMC8135014 DOI: 10.1111/acel.13360] [Citation(s) in RCA: 40] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2020] [Revised: 03/09/2021] [Accepted: 03/22/2021] [Indexed: 12/11/2022] Open
Abstract
Female fertility is inversely correlated with maternal age due to a depletion of the oocyte pool and a reduction in oocyte developmental competence. Few studies have addressed the effect of maternal age on the human mature oocyte (MII) transcriptome, which is established during oocyte growth and maturation, however, the pathways involved remain unclear. Here, we characterize and compare the transcriptomes of a large cohort of fully grown germinal vesicle stage (GV) and in vitro matured (IVM‐MII) oocytes from women of varying reproductive age. First, we identified two clusters of cells reflecting the oocyte maturation stage (GV and IVM‐MII) with 4445 and 324 putative marker genes, respectively. Furthermore, we identified genes for which transcript representation either progressively increased or decreased with age. Our results indicate that the transcriptome is more affected by age in IVM‐MII oocytes (1219 genes) than in GV oocytes (596 genes). In particular, we found that transcripts of genes involved in chromosome segregation and RNA splicing significantly increased representation with age, while genes related to mitochondrial activity showed a lower representation. Gene regulatory network analysis facilitated the identification of potential upstream master regulators of the genes involved in those biological functions. Our analysis suggests that advanced maternal age does not globally affect the oocyte transcriptome at GV or IVM‐MII stages. Nonetheless, hundreds of genes displayed altered transcript representation, particularly in IVM‐MII oocytes, which might contribute to the age‐related quality decline in human oocytes.
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Affiliation(s)
- Sílvia Llonch
- Centre for Genomic Regulation (CRG) The Barcelona Institute of Science and Technology Barcelona Spain
| | | | - Paula Nieto
- CNAG‐CRG Centre for Genomic Regulation (CRG) The Barcelona Institute of Science and Technology Barcelona Spain
| | - Anna Mallol
- Centre for Genomic Regulation (CRG) The Barcelona Institute of Science and Technology Barcelona Spain
| | - Marc Elosua‐Bayes
- CNAG‐CRG Centre for Genomic Regulation (CRG) The Barcelona Institute of Science and Technology Barcelona Spain
| | - Patricia Lorden
- CNAG‐CRG Centre for Genomic Regulation (CRG) The Barcelona Institute of Science and Technology Barcelona Spain
| | - Sara Ruiz
- CNAG‐CRG Centre for Genomic Regulation (CRG) The Barcelona Institute of Science and Technology Barcelona Spain
| | | | - Holger Heyn
- CNAG‐CRG Centre for Genomic Regulation (CRG) The Barcelona Institute of Science and Technology Barcelona Spain
| | | | - Bernhard Payer
- Centre for Genomic Regulation (CRG) The Barcelona Institute of Science and Technology Barcelona Spain
- Universitat Pompeu Fabra (UPF) Barcelona Spain
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22
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Schall PZ, Latham KE. Essential shared and species-specific features of mammalian oocyte maturation-associated transcriptome changes impacting oocyte physiology. Am J Physiol Cell Physiol 2021; 321:C3-C16. [PMID: 33881934 DOI: 10.1152/ajpcell.00105.2021] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Oogenesis is a complex process resulting in the production of a truly remarkable cell-the oocyte. Oocytes execute many unique processes and functions such as meiotic segregation of maternal genetic material, and essential life-generating functions after fertilization including posttranscriptional support of essential homeostatic and metabolic processes, and activation and reprogramming of the embryonic genome. An essential goal for understanding female fertility and infertility in mammals is to discover critical features driving the production of quality oocytes, particularly the complex regulation of oocyte maternal mRNAs. We report here the first in-depth meta-analysis of oocyte maturation-associated transcriptome changes, using eight datasets encompassing 94 RNAseq libraries for human, rhesus monkey, mouse, and cow. A majority of maternal mRNAs are regulated in a species-restricted manner, highlighting considerable divergence in oocyte transcriptome handling during maturation. We identified 121 mRNAs changing in relative abundance similarly across all four species (92 of high homology), and 993 (670 high homology) mRNAs regulated similarly in at least three of the four species, corresponding to just 0.84% and 6.9% of mRNAs analyzed. Ingenuity Pathway Analysis (IPA) revealed an association of these shared mRNAs with many shared pathways and functions, most prominently oxidative phosphorylation and mitochondrial function. These shared functions were reinforced further by primate-specific and species-specific differentially expressed genes (DEGs). Thus, correct downregulation of mRNAs related to oxidative phosphorylation and mitochondrial function is a major shared feature of mammalian oocyte maturation.
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Affiliation(s)
- Peter Z Schall
- Department of Animal Science, Michigan State University, East Lansing, Michigan.,Reproductive and Developmental Sciences Program, Michigan State University, East Lansing, Michigan.,Comparative Medicine and Integrative Biology Program, Michigan State University, East Lansing, Michigan
| | - Keith E Latham
- Department of Animal Science, Michigan State University, East Lansing, Michigan.,Reproductive and Developmental Sciences Program, Michigan State University, East Lansing, Michigan.,Department of Obstetrics, Gynecology, & Reproductive Biology, Michigan State University, East Lansing, Michigan
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23
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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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24
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Dobrynin MA, Korchagina NM, Prjibelski AD, Shafranskaya D, Ostromyshenskii DI, Shunkina K, Stepanova I, Kotova AV, Podgornaya OI, Enukashvily NI. Human pericentromeric tandemly repeated DNA is transcribed at the end of oocyte maturation and is associated with membraneless mitochondria-associated structures. Sci Rep 2020; 10:19634. [PMID: 33184340 PMCID: PMC7665179 DOI: 10.1038/s41598-020-76628-8] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2020] [Accepted: 10/29/2020] [Indexed: 01/25/2023] Open
Abstract
Most of the human genome is non-coding. However, some of the non-coding part is transcriptionally active. In humans, the tandemly repeated (TR) pericentromeric non-coding DNA-human satellites 2 and 3 (HS2, HS3)-are transcribed in somatic cells. These transcripts are also found in pre- and post-implantation embryos. The aim of this study was to analyze HS2/HS3 transcription and cellular localization of transcripts in human maturating oocytes. The maternal HS2/HS3 TR transcripts transcribed from both strands were accumulated in the ooplasm in GV-MI oocytes as shown by DNA-RNA FISH (fluorescence in-situ hybridization). The transcripts' content was higher in GV oocytes than in somatic cumulus cells according to real-time PCR. Using bioinformatics analysis, we demonstrated the presence of polyadenylated HS2 and HS3 RNAs in datasets of GV and MII oocyte transcriptomes. The transcripts shared a high degree of homology with HS2, HS3 transcripts previously observed in cancer cells. The HS2/HS3 transcripts were revealed by a combination of FISH and immunocytochemical staining within membraneless RNP structures that contained DEAD-box helicases DDX5 and DDX4. The RNP structures were closely associated with mitochondria, and are therefore similar to membraneless bodies described previously only in oogonia. These membraneless structures may be a site for spatial sequestration of RNAs and proteins in both maturating oocytes and cancer cells.
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Affiliation(s)
- M A Dobrynin
- Institute of Cytology RAS, Saint Petersburg, Russia
| | - N M Korchagina
- Ava-Peter - Scandinavia Assisted Reproductive Technology Clinic, Saint Petersburg, Russia
- Faculty of Biology, St. Petersburg State University, Saint Petersburg, Russia
| | - A D Prjibelski
- Center for Algorithmic Biotechnology, St. Petersburg State University, Saint Petersburg, Russia
| | - D Shafranskaya
- Center for Algorithmic Biotechnology, St. Petersburg State University, Saint Petersburg, Russia
| | | | - K Shunkina
- Ava-Peter - Scandinavia Assisted Reproductive Technology Clinic, Saint Petersburg, Russia
| | - I Stepanova
- Institute of Cytology RAS, Saint Petersburg, Russia
| | - A V Kotova
- Institute of Cytology RAS, Saint Petersburg, Russia
- North-Western State Medical University Named After I.I. Mechnikov, Saint Petersburg, Russia
| | - O I Podgornaya
- Institute of Cytology RAS, Saint Petersburg, Russia
- Faculty of Biology, St. Petersburg State University, Saint Petersburg, Russia
| | - N I Enukashvily
- Institute of Cytology RAS, Saint Petersburg, Russia.
- North-Western State Medical University Named After I.I. Mechnikov, Saint Petersburg, Russia.
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25
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Sun HZ, Zhou M, Wang O, Chen Y, Liu JX, Guan LL. Multi-omics reveals functional genomic and metabolic mechanisms of milk production and quality in dairy cows. Bioinformatics 2020; 36:2530-2537. [PMID: 31873721 DOI: 10.1093/bioinformatics/btz951] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2019] [Revised: 11/04/2019] [Accepted: 12/20/2019] [Indexed: 11/13/2022] Open
Abstract
MOTIVATION Enhancing the utilization of human-inedible crop by-products by ruminants to produce high-quality milk for human consumption is an emerging global task. We performed a multi-omics-based study to decipher the regulatory biological processes of milk production when cows fed low-quality crop by-products with the aim to improve their utilization. RESULTS Seven types of different high-throughput omics data were generated across three central organs [rumen, liver and mammary gland (MG)] and biofluids (rumen fluid and blood) that involved in milk production. The integrated multi-omics analysis including metabolomics, metagenomics and transcriptomics showed altered microbiome at compositional and functional levels, microbial metabolites in the rumen, down-regulated genes and associated functions in liver and MG. These changes simultaneously contributed to down-regulated three key metabolic nodes (propionate, glucose and amino acid) across these organs and biofluids that led to lowered milk yield and quality when cows consumed corn stover (CS). Hippuric acid was identified as a biomarker that led to low milk production in CS-fed cows, suggesting a future evaluation parameter related to the metabolic mechanism of low-quality forage utilization. This study unveils the milk production-related biological mechanism across different biofluids and tissues under a low-quality forage diet, which provides a novel understanding and potential improvement strategies for future crop by-products utilization and sustainable ruminant production. AVAILABILITY AND IMPLEMENTATION The raw files of metagenomics, metabolomics, and transcriptomics data can be accessed at NCBI SRA (No. SRR5028206), EMBI-EBI (No. MTBLS411), and GEO (NO. GSE78524) databases respectively. SUPPLEMENTARY INFORMATION Supplementary data are available at Bioinformatics online.
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Affiliation(s)
- Hui-Zeng Sun
- Institute of Dairy Science, MoE Key Laboratory of Molecular Animal Nutrition, College of Animal Sciences, Zhejiang University, Hangzhou 310058, P. R. China.,Department of Agricultural, Food & Nutritional Science, University of Alberta, Edmonton, AB T6G 2P5, Canada
| | - Mi Zhou
- Department of Agricultural, Food & Nutritional Science, University of Alberta, Edmonton, AB T6G 2P5, Canada
| | - Ou Wang
- Department of Agricultural, Food & Nutritional Science, University of Alberta, Edmonton, AB T6G 2P5, Canada
| | - Yanhong Chen
- Department of Agricultural, Food & Nutritional Science, University of Alberta, Edmonton, AB T6G 2P5, Canada
| | - Jian-Xin Liu
- Institute of Dairy Science, MoE Key Laboratory of Molecular Animal Nutrition, College of Animal Sciences, Zhejiang University, Hangzhou 310058, P. R. China
| | - Le Luo Guan
- Department of Agricultural, Food & Nutritional Science, University of Alberta, Edmonton, AB T6G 2P5, Canada
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26
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Llano E, Masek T, Gahurova L, Pospisek M, Koncicka M, Jindrova A, Jansova D, Iyyappan R, Roucova K, Bruce AW, Kubelka M, Susor A. Age-related differences in the translational landscape of mammalian oocytes. Aging Cell 2020; 19:e13231. [PMID: 32951297 PMCID: PMC7576272 DOI: 10.1111/acel.13231] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2020] [Revised: 07/15/2020] [Accepted: 08/01/2020] [Indexed: 12/13/2022] Open
Abstract
Increasing maternal age in mammals is associated with poorer oocyte quality, involving higher aneuploidy rates and decreased developmental competence. Prior to resumption of meiosis, fully developed mammalian oocytes become transcriptionally silent until the onset of zygotic genome activation. Therefore, meiotic progression and early embryogenesis are driven largely by translational utilization of previously synthesized mRNAs. We report that genome‐wide translatome profiling reveals considerable numbers of transcripts that are differentially translated in oocytes obtained from aged compared to young females. Additionally, we show that a number of aberrantly translated mRNAs in oocytes from aged females are associated with cell cycle. Indeed, we demonstrate that four specific maternal age‐related transcripts (Sgk1, Castor1, Aire and Eg5) with differential translation rates encode factors that are associated with the newly forming meiotic spindle. Moreover, we report substantial defects in chromosome alignment and cytokinesis in the oocytes of young females, in which candidate CASTOR1 and SGK1 protein levels or activity are experimentally altered. Our findings indicate that improper translation of specific proteins at the onset of meiosis contributes to increased chromosome segregation problems associated with female ageing.
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Affiliation(s)
- Edgar Llano
- Laboratory of Biochemistry and Molecular Biology of Germ Cells Institute of Animal Physiology and Genetics CAS Libechov Czech Republic
- Laboratory of RNA Biochemistry Department of Genetics and Microbiology Faculty of Science Charles University in Prague Prague Czech Republic
| | - Tomas Masek
- Laboratory of RNA Biochemistry Department of Genetics and Microbiology Faculty of Science Charles University in Prague Prague Czech Republic
| | - Lenka Gahurova
- Laboratory of Biochemistry and Molecular Biology of Germ Cells Institute of Animal Physiology and Genetics CAS Libechov Czech Republic
- Laboratory of Early Mammalian Developmental Biology (LEMDB) Department of Molecular Biology and Genetics Faculty of Science University of South Bohemia Ceske Budejovice Czech Republic
| | - Martin Pospisek
- Laboratory of RNA Biochemistry Department of Genetics and Microbiology Faculty of Science Charles University in Prague Prague Czech Republic
| | - Marketa Koncicka
- Laboratory of Biochemistry and Molecular Biology of Germ Cells Institute of Animal Physiology and Genetics CAS Libechov Czech Republic
| | - Anna Jindrova
- Laboratory of Biochemistry and Molecular Biology of Germ Cells Institute of Animal Physiology and Genetics CAS Libechov Czech Republic
| | - Denisa Jansova
- Laboratory of Biochemistry and Molecular Biology of Germ Cells Institute of Animal Physiology and Genetics CAS Libechov Czech Republic
| | - Rajan Iyyappan
- Laboratory of Biochemistry and Molecular Biology of Germ Cells Institute of Animal Physiology and Genetics CAS Libechov Czech Republic
| | - Kristina Roucova
- Laboratory of RNA Biochemistry Department of Genetics and Microbiology Faculty of Science Charles University in Prague Prague Czech Republic
| | - Alexander W. Bruce
- Laboratory of Early Mammalian Developmental Biology (LEMDB) Department of Molecular Biology and Genetics Faculty of Science University of South Bohemia Ceske Budejovice Czech Republic
| | - Michal Kubelka
- Laboratory of Biochemistry and Molecular Biology of Germ Cells Institute of Animal Physiology and Genetics CAS Libechov Czech Republic
| | - Andrej Susor
- Laboratory of Biochemistry and Molecular Biology of Germ Cells Institute of Animal Physiology and Genetics CAS Libechov Czech Republic
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27
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Li J, Lu M, Zhang P, Hou E, Li T, Liu X, Xu X, Wang Z, Fan Y, Zhen X, Li R, Liu P, Yu Y, Hang J, Qiao J. Aberrant spliceosome expression and altered alternative splicing events correlate with maturation deficiency in human oocytes. Cell Cycle 2020; 19:2182-2194. [PMID: 32779509 PMCID: PMC7513853 DOI: 10.1080/15384101.2020.1799295] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Different strategies of ovarian stimulation are widely used in IVF to retrieve mature metaphase II (MII) oocytes for fertilization. On average, approximately 70% of recovered oocytes are mature, while personalized administration of hCG and/or GnRH agonist trigger and in vitro maturation (IVM) management can further improve the maturation rate. However, even under such conditions, a complete absence of oocyte maturation is still observed sporadically. The probable causes for such maturation-deficient (MD) oocytes - which arrest abnormally at metaphase I (MI) stage - are still under investigation. In the present study, using single-cell transcriptomic RNA sequencing (RNA-seq) and differential expression analysis, we showed that gene expression profiles were aberrant, and alternative splicing (AS) patterns were changed in MD oocytes when compared with normally mature (MN) oocytes. Gene ontology (GO) enrichment demonstrated that the differently expressed genes (DEGs) were mostly correlated with pre-mRNA splicing, RNA transportation, RNA processing, and mRNA regulation. Subsequently, analysis of AS events revealed that genes with altered AS patterns were primarily associated with metabolism and cell cycle. With these findings, we have demonstrated aberrant gene expression in complete maturation-deficient oocytes, and we propose that alterations in post-transcriptional regulation constitute a potential underlying mechanism governing oocyte maturation.
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Affiliation(s)
- Junsheng Li
- Center for Reproductive Medicine, Department of Obstetrics and Gynecology, Peking University Third Hospital , Beijing, China.,Key Laboratory of Assisted Reproduction, Ministry of Education , Beijing, China.,Beijing Key Laboratory of Reproductive Endocrinology and Assisted Reproduction , Beijing, China
| | - Minzhen Lu
- Center for Reproductive Medicine, Department of Obstetrics and Gynecology, Peking University Third Hospital , Beijing, China.,Key Laboratory of Assisted Reproduction, Ministry of Education , Beijing, China.,Beijing Key Laboratory of Reproductive Endocrinology and Assisted Reproduction , Beijing, China
| | - Puyao Zhang
- Center for Reproductive Medicine, Department of Obstetrics and Gynecology, Peking University Third Hospital , Beijing, China.,Key Laboratory of Assisted Reproduction, Ministry of Education , Beijing, China.,Beijing Key Laboratory of Reproductive Endocrinology and Assisted Reproduction , Beijing, China
| | - Entai Hou
- Center for Reproductive Medicine, Department of Obstetrics and Gynecology, Peking University Third Hospital , Beijing, China.,Key Laboratory of Assisted Reproduction, Ministry of Education , Beijing, China.,Beijing Key Laboratory of Reproductive Endocrinology and Assisted Reproduction , Beijing, China
| | - Tianjie Li
- Center for Reproductive Medicine, Department of Obstetrics and Gynecology, Peking University Third Hospital , Beijing, China.,Key Laboratory of Assisted Reproduction, Ministry of Education , Beijing, China.,Beijing Key Laboratory of Reproductive Endocrinology and Assisted Reproduction , Beijing, China
| | - Xian Liu
- State Key Laboratory of Molecular Developmental Biology, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences , Beijing, China
| | - Xiaofei Xu
- Center for Reproductive Medicine, Department of Obstetrics and Gynecology, Peking University Third Hospital , Beijing, China.,Key Laboratory of Assisted Reproduction, Ministry of Education , Beijing, China.,Beijing Key Laboratory of Reproductive Endocrinology and Assisted Reproduction , Beijing, China
| | - Zhaohui Wang
- State Key Laboratory of Molecular Developmental Biology, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences , Beijing, China
| | - Yong Fan
- Key Laboratory for Major Obstetric Diseases of Guangdong Province, The Third Affiliated Hospital of Guangzhou Medical University , Guangzhou, China
| | - Xiumei Zhen
- Center for Reproductive Medicine, Department of Obstetrics and Gynecology, Peking University Third Hospital , Beijing, China.,Key Laboratory of Assisted Reproduction, Ministry of Education , Beijing, China.,Beijing Key Laboratory of Reproductive Endocrinology and Assisted Reproduction , Beijing, China
| | - Rong Li
- Center for Reproductive Medicine, Department of Obstetrics and Gynecology, Peking University Third Hospital , Beijing, China.,Key Laboratory of Assisted Reproduction, Ministry of Education , Beijing, China.,Beijing Key Laboratory of Reproductive Endocrinology and Assisted Reproduction , Beijing, China
| | - Ping Liu
- Center for Reproductive Medicine, Department of Obstetrics and Gynecology, Peking University Third Hospital , Beijing, China.,Key Laboratory of Assisted Reproduction, Ministry of Education , Beijing, China.,Beijing Key Laboratory of Reproductive Endocrinology and Assisted Reproduction , Beijing, China
| | - Yang Yu
- Center for Reproductive Medicine, Department of Obstetrics and Gynecology, Peking University Third Hospital , Beijing, China.,Key Laboratory of Assisted Reproduction, Ministry of Education , Beijing, China.,Beijing Key Laboratory of Reproductive Endocrinology and Assisted Reproduction , Beijing, China
| | - Jing Hang
- Center for Reproductive Medicine, Department of Obstetrics and Gynecology, Peking University Third Hospital , Beijing, China.,Key Laboratory of Assisted Reproduction, Ministry of Education , Beijing, China.,Beijing Key Laboratory of Reproductive Endocrinology and Assisted Reproduction , Beijing, China
| | - Jie Qiao
- Center for Reproductive Medicine, Department of Obstetrics and Gynecology, Peking University Third Hospital , Beijing, China.,Key Laboratory of Assisted Reproduction, Ministry of Education , Beijing, China.,Beijing Key Laboratory of Reproductive Endocrinology and Assisted Reproduction , Beijing, China.,Peking-Tsinghua Center for Life Sciences, Peking University , Beijing, China
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28
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Zhao ZH, Meng TG, Li A, Schatten H, Wang ZB, Sun QY. RNA-Seq transcriptome reveals different molecular responses during human and mouse oocyte maturation and fertilization. BMC Genomics 2020; 21:475. [PMID: 32650721 PMCID: PMC7350670 DOI: 10.1186/s12864-020-06885-4] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2020] [Accepted: 07/06/2020] [Indexed: 12/20/2022] Open
Abstract
BACKGROUND Female infertility is a worldwide concern and the etiology of infertility has not been thoroughly demonstrated. Although the mouse is a good model system to perform functional studies, the differences between mouse and human also need to be considered. The objective of this study is to elucidate the different molecular mechanisms underlying oocyte maturation and fertilization between human and mouse. RESULTS A comparative transcriptome analysis was performed to identify the differentially expressed genes and associated biological processes between human and mouse oocytes. In total, 8513 common genes, as well as 15,165 and 6126 uniquely expressed genes were detected in human and mouse MII oocytes, respectively. Additionally, the ratios of non-homologous genes in human and mouse MII oocytes were 37 and 8%, respectively. Functional categorization analysis of the human MII non-homologous genes revealed that cAMP-mediated signaling, sister chromatid cohesin, and cell recognition were the major enriched biological processes. Interestingly, we couldn't detect any GO categories in mouse non-homologous genes. CONCLUSIONS This study demonstrates that human and mouse oocytes exhibit significant differences in gene expression profiles during oocyte maturation, which probably deciphers the differential molecular responses to oocyte maturation and fertilization. The significant differences between human and mouse oocytes limit the generalizations from mouse to human oocyte maturation. Knowledge about the limitations of animal models is crucial when exploring a complex process such as human oocyte maturation and fertilization.
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Affiliation(s)
- Zheng-Hui Zhao
- State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing, China.,University of Chinese Academy of Sciences, Beijing, China
| | - Tie-Gang Meng
- State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing, China.,Fertility Preservation Lab, Reproductive Medicine Center, Guangdong Second Provincial General Hospital, Guangzhou, 510317, China
| | - Ang Li
- State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing, China
| | - Heide Schatten
- Department of Veterinary Pathobiology, University of Missouri, Columbia, MO, 65211, USA
| | - Zhen-Bo Wang
- State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing, China. .,University of Chinese Academy of Sciences, Beijing, China.
| | - Qing-Yuan Sun
- State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing, China. .,Fertility Preservation Lab, Reproductive Medicine Center, Guangdong Second Provincial General Hospital, Guangzhou, 510317, China.
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29
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Identifying the Translatome of Mouse NEBD-Stage Oocytes via SSP-Profiling; A Novel Polysome Fractionation Method. Int J Mol Sci 2020; 21:ijms21041254. [PMID: 32070012 PMCID: PMC7072993 DOI: 10.3390/ijms21041254] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2020] [Revised: 02/03/2020] [Accepted: 02/10/2020] [Indexed: 12/13/2022] Open
Abstract
Meiotic maturation of oocyte relies on pre-synthesised maternal mRNA, the translation of which is highly coordinated in space and time. Here, we provide a detailed polysome profiling protocol that demonstrates a combination of the sucrose gradient ultracentrifugation in small SW55Ti tubes with the qRT-PCR-based quantification of 18S and 28S rRNAs in fractionated polysome profile. This newly optimised method, named Scarce Sample Polysome Profiling (SSP-profiling), is suitable for both scarce and conventional sample sizes and is compatible with downstream RNA-seq to identify polysome associated transcripts. Utilising SSP-profiling we have assayed the translatome of mouse oocytes at the onset of nuclear envelope breakdown (NEBD)—a developmental point, the study of which is important for furthering our understanding of the molecular mechanisms leading to oocyte aneuploidy. Our analyses identified 1847 transcripts with moderate to strong polysome occupancy, including abundantly represented mRNAs encoding mitochondrial and ribosomal proteins, proteasomal components, glycolytic and amino acids synthetic enzymes, proteins involved in cytoskeleton organization plus RNA-binding and translation initiation factors. In addition to transcripts encoding known players of meiotic progression, we also identified several mRNAs encoding proteins of unknown function. Polysome profiles generated using SSP-profiling were more than comparable to those developed using existing conventional approaches, being demonstrably superior in their resolution, reproducibility, versatility, speed of derivation and downstream protocol applicability.
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30
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Peng RR, Wang LL, Gao WY, Zhu FY, Hu F, Zeng WT, Shi LY, Chen XC, Cai JY, Zhang D, Xia ZR, Yang ZX. The 5.8S pre-rRNA maturation factor, M-phase phosphoprotein 6, is a female fertility factor required for oocyte quality and meiosis. Cell Prolif 2020; 53:e12769. [PMID: 32003502 PMCID: PMC7106954 DOI: 10.1111/cpr.12769] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2019] [Revised: 12/07/2019] [Accepted: 01/04/2020] [Indexed: 11/30/2022] Open
Abstract
Objectives M‐phase phosphoprotein 6 (MPP6) is important for 5.8S pre‐rRNA maturation in somatic cells and was screened as a female fertility factor. However, whether MPP6 functions in oocyte meiosis and fertility is not yet known. We aimed to address this. Materials and Methods Mouse oocytes with surrounded nucleus (SN) or non‐surrounded nucleus (NSN) were used for all experiments. Peptide nanoparticle‐mediated antibody transfection was used to deplete MPP6. Immunofluorescence staining, immunohistochemistry and live tracker staining were used to examine MPP6 localization and characterize phenotypes after control or MPP6 depletion. High‐fidelity PCR and fluorescence in situ hybridization (FISH) were used to examine the localization and level of 5.8S rRNAs. Western blot was used to examine the protein level. MPP6‐EGFP mRNA microinjection was used to do the rescue. Results MPP6 was enriched within ovaries and oocytes. MPP6 depletion significantly impeded oocyte meiosis. MPP6 depletion increased 5.8S pre‐rRNA. The mRNA levels of MPP6 and 5.8S rRNA decreased within ageing oocytes, and MPP6 mRNA injection partially increased 5.8S rRNA maturation and improved oocyte quality. Conclusions MPP6 is required for 5.8S rRNA maturation, meiosis and quality control in mouse oocytes, and MPP6 level might be a marker for oocyte quality.
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Affiliation(s)
- Rui-Rui Peng
- Center for Reproductive Medicine, Shandong Provincial Hospital Affiliated to Shandong University, Jinan, China.,State Key Lab of Reproductive Medicine, Nanjing Medical University, Nanjing, China
| | - Li-Li Wang
- State Key Lab of Reproductive Medicine, Nanjing Medical University, Nanjing, China
| | - Wen-Yi Gao
- State Key Lab of Reproductive Medicine, Nanjing Medical University, Nanjing, China
| | - Feng-Yu Zhu
- State Key Lab of Reproductive Medicine, Nanjing Medical University, Nanjing, China
| | - Fan Hu
- State Key Lab of Reproductive Medicine, Nanjing Medical University, Nanjing, China
| | - Wen-Tao Zeng
- Animal Core Facility, Nanjing Medical University, Nanjing, China
| | - Li-Ya Shi
- The Second Affiliated Hospital, Nanjing Medical University, Nanjing, China
| | - Xi-Chen Chen
- Analysis and Test Center, Nanjing Medical University, Nanjing, China
| | - Jing-Yang Cai
- State Key Lab of Reproductive Medicine, Nanjing Medical University, Nanjing, China
| | - Dong Zhang
- State Key Lab of Reproductive Medicine, Nanjing Medical University, Nanjing, China.,Animal Core Facility, Nanjing Medical University, Nanjing, China
| | - Zheng-Rong Xia
- Analysis and Test Center, Nanjing Medical University, Nanjing, China
| | - Zhi-Xia Yang
- State Key Lab of Reproductive Medicine, Nanjing Medical University, Nanjing, China
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31
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Luteinizing Hormone Action in Human Oocyte Maturation and Quality: Signaling Pathways, Regulation, and Clinical Impact. Reprod Sci 2020; 27:1223-1252. [PMID: 32046451 PMCID: PMC7190682 DOI: 10.1007/s43032-019-00137-x] [Citation(s) in RCA: 45] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2019] [Accepted: 10/14/2019] [Indexed: 12/18/2022]
Abstract
The ovarian follicle luteinizing hormone (LH) signaling molecules that regulate oocyte meiotic maturation have recently been identified. The LH signal reduces preovulatory follicle cyclic nucleotide levels which releases oocytes from the first meiotic arrest. In the ovarian follicle, the LH signal reduces cyclic nucleotide levels via the CNP/NPR2 system, the EGF/EGF receptor network, and follicle/oocyte gap junctions. In the oocyte, reduced cyclic nucleotide levels activate the maturation promoting factor (MPF). The activated MPF induces chromosome segregation and completion of the first and second meiotic divisions. The purpose of this paper is to present an overview of the current understanding of human LH signaling regulation of oocyte meiotic maturation by identifying and integrating the human studies on this topic. We found 89 human studies in the literature that identified 24 LH follicle/oocyte signaling proteins. These studies show that human oocyte meiotic maturation is regulated by the same proteins that regulate animal oocyte meiotic maturation. We also found that these LH signaling pathway molecules regulate human oocyte quality and subsequent embryo quality. Remarkably, in vitro maturation (IVM) prematuration culture (PMC) protocols that manipulate the LH signaling pathway improve human oocyte quality of cultured human oocytes. This knowledge has improved clinical human IVM efficiency which may become a routine alternative ART for some infertile patients.
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32
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Zhang T, Xi Q, Wang D, Li J, Wang M, Li D, Zhu L, Jin L. Mitochondrial dysfunction and endoplasmic reticulum stress involved in oocyte aging: an analysis using single-cell RNA-sequencing of mouse oocytes. J Ovarian Res 2019; 12:53. [PMID: 31176373 PMCID: PMC6556043 DOI: 10.1186/s13048-019-0529-x] [Citation(s) in RCA: 37] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2019] [Accepted: 05/27/2019] [Indexed: 12/30/2022] Open
Abstract
Object To explore the mechanisms of ovarian aging, we performed overall analysis on the age-related alterations of gene expression profiles in mouse germinal vesicle (GV) stage oocytes by means of single-cell RNA-sequencing method (scRNA-seq). Methods Two age groups (5-week-old and 32-week-old) female KM mice were used as young and old models. Subsequently, GV oocytes were collected for scRNA-seq. The bioinformatics was performed to analyze and compare the differences of gene expression profile between GV oocytes of young and old mice. Results The analysis of scRNA-seq data showed that there were 624 differential expressed genes (DEGs) between two age groups of mouse GV stage oocytes. Four hundred forty-nine DEGs were up-regulated while 175 DEGs were down-regulated in the GV oocytes of the old group. KEGG pathway analysis revealed that the genes involved in mitochondrial function including oxidative phosphorylation and ATP production pathway were significantly down-regulated in GV oocytes of 32-week-old mice, especially the mitochondrial encoded NADH dehydrogenase (mt-Nd), including mt-Nd2, mt-Nd3, mt-Nd4, mt-Nd4L and mt-Nd5. Analysis of DEGs revealed that endoplasmic reticulum stress-related genes including AdipoR2, IRAK-1, RCAN1 and MsrB1 were significantly down-regulated in GV oocytes of 32-week-old mice. Also, analysis of DEGs demonstrated that anti-oxidation-related genes including Erbb3、Rcan1、Gsto2 and Msrb1 were significantly down-regulated in GV oocytes of old group. Conclusion The disorder of mitochondrial function, endoplasmic reticulum stress and the reduced antioxidant capability might be involved in the progression of oocyte aging. Especially, the down regulation of mitochondrial encoded subunits of respiratory chain complexes might play critical roles in the relevant mechanisms. Electronic supplementary material The online version of this article (10.1186/s13048-019-0529-x) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Tao Zhang
- Reproductive Medicine Center, Tongji Hospital, Tongji Medicine College, Huazhong University of Science and Technology, 1095 JieFang Avenue, Wuhan, 430030, People's Republic of China
| | - Qingsong Xi
- Department of Oncology, Tongji Hospital, Tongji Medicine College, Huazhong University of Science and Technology, 1095 JieFang Avenue, Wuhan, 430030, People's Republic of China
| | - Dan Wang
- Department of Ophthalmology, Tongji Hospital, Tongji Medicine College, Huazhong University of Science and Technology, 1095 JieFang Avenue, Wuhan, 430030, People's Republic of China
| | - Jingjing Li
- Reproductive Medicine Center, Tongji Hospital, Tongji Medicine College, Huazhong University of Science and Technology, 1095 JieFang Avenue, Wuhan, 430030, People's Republic of China
| | - Meng Wang
- Reproductive Medicine Center, Tongji Hospital, Tongji Medicine College, Huazhong University of Science and Technology, 1095 JieFang Avenue, Wuhan, 430030, People's Republic of China
| | - Dan Li
- Reproductive Medicine Center, Tongji Hospital, Tongji Medicine College, Huazhong University of Science and Technology, 1095 JieFang Avenue, Wuhan, 430030, People's Republic of China
| | - Lixia Zhu
- Reproductive Medicine Center, Tongji Hospital, Tongji Medicine College, Huazhong University of Science and Technology, 1095 JieFang Avenue, Wuhan, 430030, People's Republic of China.
| | - Lei Jin
- Reproductive Medicine Center, Tongji Hospital, Tongji Medicine College, Huazhong University of Science and Technology, 1095 JieFang Avenue, Wuhan, 430030, People's Republic of China.
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33
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Krisher RL. Maternal age affects oocyte developmental potential at both ends of the age spectrum. Reprod Fertil Dev 2019; 31:1-9. [PMID: 32188537 DOI: 10.1071/rd18340] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Maternal age has a significant effect on oocyte developmental competence. Overall, evidence suggests that oocytes from both prepubertal females and reproductively aged females are inherently less competent. Reduced oocyte quality in both age groups is problematic for human medicine and agriculture. Some of the cellular mechanisms implicated in poor oocyte quality associated with maternal age are mitochondrial function and location, reduction of oxygen radicals, balance of metabolic pathways, regulation of maternal mRNAs and appropriate communication between the oocyte and cumulus cells. However, additional knowledge must be gained about the deficiencies present in prepubertal and reproductively aged oocytes that result in poor developmental potential before significant improvement can be achieved. This review discusses the evidence currently available regarding oocyte quality at both ends of the maternal age spectrum, what we know, or hypothesise, about the mechanisms involved and current thoughts regarding potential treatment for improvement.
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Affiliation(s)
- Rebecca L Krisher
- Colorado Center for Reproductive Medicine, 10290 RidgeGate Circle, Lone Tree, CO 80124, USA. Email
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34
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Pasquariello R, Ermisch AF, Silva E, McCormick S, Logsdon D, Barfield JP, Schoolcraft WB, Krisher RL. Alterations in oocyte mitochondrial number and function are related to spindle defects and occur with maternal aging in mice and humans†. Biol Reprod 2018; 100:971-981. [DOI: 10.1093/biolre/ioy248] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2018] [Revised: 10/29/2018] [Accepted: 11/19/2018] [Indexed: 01/09/2023] Open
Affiliation(s)
- Rolando Pasquariello
- Colorado Center for Reproductive Medicine, Lone Tree, Colorado, USA
- Colorado State University, College of Veterinary Medicine and Biomedical Sciences, Department of Biomedical Sciences, Animal Reproduction and Biotechnology Laboratory, Fort Collins, Colorado, USA
| | - Alison F Ermisch
- Colorado Center for Reproductive Medicine, Lone Tree, Colorado, USA
| | - Elena Silva
- Colorado Center for Reproductive Medicine, Lone Tree, Colorado, USA
| | - Sue McCormick
- Colorado Center for Reproductive Medicine, Lone Tree, Colorado, USA
| | - Deirdre Logsdon
- Colorado Center for Reproductive Medicine, Lone Tree, Colorado, USA
| | - Jennifer P Barfield
- Colorado State University, College of Veterinary Medicine and Biomedical Sciences, Department of Biomedical Sciences, Animal Reproduction and Biotechnology Laboratory, Fort Collins, Colorado, USA
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35
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TRPM7 and Ca V3.2 channels mediate Ca 2+ influx required for egg activation at fertilization. Proc Natl Acad Sci U S A 2018; 115:E10370-E10378. [PMID: 30322909 DOI: 10.1073/pnas.1810422115] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
The success of mammalian development following fertilization depends on a series of transient increases in egg cytoplasmic Ca2+, referred to as Ca2+ oscillations. Maintenance of these oscillations requires Ca2+ influx across the plasma membrane, which is mediated in part by T-type, CaV3.2 channels. Here we show using genetic mouse models that TRPM7 channels are required to support this Ca2+ influx. Eggs lacking both TRPM7 and CaV3.2 stop oscillating prematurely, indicating that together they are responsible for the majority of Ca2+ influx immediately following fertilization. Fertilized eggs lacking both channels also frequently display delayed resumption of Ca2+ oscillations, which appears to require sperm-egg fusion. TRPM7 and CaV3.2 channels almost completely account for Ca2+ influx observed following store depletion, a process previously attributed to canonical store-operated Ca2+ entry mediated by STIM/ORAI interactions. TRPM7 serves as a membrane sensor of extracellular Mg2+ and Ca2+ concentrations and mediates the effects of these ions on Ca2+ oscillation frequency. When bred to wild-type males, female mice carrying eggs lacking TRPM7 and CaV3.2 are subfertile, and their offspring have increased variance in postnatal weight. These in vivo findings confirm previous observations linking in vitro experimental alterations in Ca2+ oscillatory patterns with developmental potential and offspring growth. The identification of TRPM7 and CaV3.2 as key mediators of Ca2+ influx following fertilization provides a mechanistic basis for the rational design of culture media that optimize developmental potential in research animals, domestic animals, and humans.
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Smits MAJ, Wong KM, Mantikou E, Korver CM, Jongejan A, Breit TM, Goddijn M, Mastenbroek S, Repping S. Age-related gene expression profiles of immature human oocytes. ACTA ACUST UNITED AC 2018; 24:469-477. [DOI: 10.1093/molehr/gay036] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2018] [Accepted: 08/22/2018] [Indexed: 11/12/2022]
Affiliation(s)
- M A J Smits
- Center for Reproductive Medicine, Academic Medical Center, University of Amsterdam, Meibergdreef 9, Amsterdam, The Netherlands
| | - K M Wong
- Center for Reproductive Medicine, Academic Medical Center, University of Amsterdam, Meibergdreef 9, Amsterdam, The Netherlands
| | - E Mantikou
- Center for Reproductive Medicine, Academic Medical Center, University of Amsterdam, Meibergdreef 9, Amsterdam, The Netherlands
| | - C M Korver
- Center for Reproductive Medicine, Academic Medical Center, University of Amsterdam, Meibergdreef 9, Amsterdam, The Netherlands
| | - A Jongejan
- Center for Reproductive Medicine, Academic Medical Center, University of Amsterdam, Meibergdreef 9, Amsterdam, The Netherlands
- Bioinformatics Laboratory, Department of Clinical Epidemiology, Biostatistics and Bioinformatics, Academic Medical Center, University of Amsterdam, Meibergdreef 9, Amsterdam, The Netherlands
| | - T M Breit
- RNA Biology and Applied Bioinformatics Group, Swammerdam Institute for Life Sciences, Faculty of Science (FNWI), University of Amsterdam, Science Park 904, Amsterdam, The Netherlands
| | - M Goddijn
- Center for Reproductive Medicine, Academic Medical Center, University of Amsterdam, Meibergdreef 9, Amsterdam, The Netherlands
| | - S Mastenbroek
- Center for Reproductive Medicine, Academic Medical Center, University of Amsterdam, Meibergdreef 9, Amsterdam, The Netherlands
| | - S Repping
- Center for Reproductive Medicine, Academic Medical Center, University of Amsterdam, Meibergdreef 9, Amsterdam, The Netherlands
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