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Del Bianco D, Gentile R, Sallicandro L, Biagini A, Quellari PT, Gliozheni E, Sabbatini P, Ragonese F, Malvasi A, D’Amato A, Baldini GM, Trojano G, Tinelli A, Fioretti B. Electro-Metabolic Coupling of Cumulus-Oocyte Complex. Int J Mol Sci 2024; 25:5349. [PMID: 38791387 PMCID: PMC11120766 DOI: 10.3390/ijms25105349] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2024] [Revised: 05/03/2024] [Accepted: 05/10/2024] [Indexed: 05/26/2024] Open
Abstract
Oocyte-cumulus cell interaction is essential for oocyte maturation and competence. The bidirectional crosstalk network mediated by gap junctions is fundamental for the metabolic cooperation between these cells. As cumulus cells exhibit a more glycolytic phenotype, they can provide metabolic substrates that the oocyte can use to produce ATP via oxidative phosphorylation. The impairment of mitochondrial activity plays a crucial role in ovarian aging and, thus, in fertility, determining the success or failure of assisted reproductive techniques. This review aims to deepen the knowledge about the electro-metabolic coupling of the cumulus-oocyte complex and to hypothesize a putative role of potassium channel modulators in order to improve fertility, promote intracellular Ca2+ influx, and increase the mitochondrial biogenesis and resulting ATP levels in cumulus cells.
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Affiliation(s)
- Diletta Del Bianco
- Department of Chemistry, Biology and Biotechnologies, University of Perugia, Via dell’Elce di Sotto 8, 06132 Perugia, Italy; (D.D.B.); (R.G.); (L.S.); (A.B.); (P.T.Q.); (E.G.); (P.S.); (F.R.)
| | - Rosaria Gentile
- Department of Chemistry, Biology and Biotechnologies, University of Perugia, Via dell’Elce di Sotto 8, 06132 Perugia, Italy; (D.D.B.); (R.G.); (L.S.); (A.B.); (P.T.Q.); (E.G.); (P.S.); (F.R.)
- Laboratorio Interdipartimentale di Fisiopatologia della Riproduzione, Università degli Studi di Perugia, Edificio C, Piano 3 P.zza Lucio Severi, 1, Sant’Andrea delle Fratte, 06132 Perugia, Italy
| | - Luana Sallicandro
- Department of Chemistry, Biology and Biotechnologies, University of Perugia, Via dell’Elce di Sotto 8, 06132 Perugia, Italy; (D.D.B.); (R.G.); (L.S.); (A.B.); (P.T.Q.); (E.G.); (P.S.); (F.R.)
- Department of Medicine and Surgery, Perugia Medical School, University of Perugia, Piazza Lucio Severi 1, 06132 Perugia, Italy
| | - Andrea Biagini
- Department of Chemistry, Biology and Biotechnologies, University of Perugia, Via dell’Elce di Sotto 8, 06132 Perugia, Italy; (D.D.B.); (R.G.); (L.S.); (A.B.); (P.T.Q.); (E.G.); (P.S.); (F.R.)
- Department of Medicine and Surgery, Perugia Medical School, University of Perugia, Piazza Lucio Severi 1, 06132 Perugia, Italy
| | - Paola Tiziana Quellari
- Department of Chemistry, Biology and Biotechnologies, University of Perugia, Via dell’Elce di Sotto 8, 06132 Perugia, Italy; (D.D.B.); (R.G.); (L.S.); (A.B.); (P.T.Q.); (E.G.); (P.S.); (F.R.)
- Department of Medicine and Surgery, Perugia Medical School, University of Perugia, Piazza Lucio Severi 1, 06132 Perugia, Italy
- ASST Grande Ospedale Metropolitano Niguarda, 20162 Milano, Italy
| | - Elko Gliozheni
- Department of Chemistry, Biology and Biotechnologies, University of Perugia, Via dell’Elce di Sotto 8, 06132 Perugia, Italy; (D.D.B.); (R.G.); (L.S.); (A.B.); (P.T.Q.); (E.G.); (P.S.); (F.R.)
- Department of Medicine and Surgery, Perugia Medical School, University of Perugia, Piazza Lucio Severi 1, 06132 Perugia, Italy
- Department of Obstetrics and Gynecology, Faculty of Medicine, University of Tirana, AL1005 Tirana, Albania
| | - Paola Sabbatini
- Department of Chemistry, Biology and Biotechnologies, University of Perugia, Via dell’Elce di Sotto 8, 06132 Perugia, Italy; (D.D.B.); (R.G.); (L.S.); (A.B.); (P.T.Q.); (E.G.); (P.S.); (F.R.)
| | - Francesco Ragonese
- Department of Chemistry, Biology and Biotechnologies, University of Perugia, Via dell’Elce di Sotto 8, 06132 Perugia, Italy; (D.D.B.); (R.G.); (L.S.); (A.B.); (P.T.Q.); (E.G.); (P.S.); (F.R.)
- Laboratorio Interdipartimentale di Fisiopatologia della Riproduzione, Università degli Studi di Perugia, Edificio C, Piano 3 P.zza Lucio Severi, 1, Sant’Andrea delle Fratte, 06132 Perugia, Italy
| | - Antonio Malvasi
- Department of Biomedical Sciences and Human Oncology, University of Bari, 70121 Bari, Italy;
| | - Antonio D’Amato
- 1st Unit of Obstetrics and Gynecology, University of Bari, 70121 Bari, Italy;
| | | | - Giuseppe Trojano
- Department of Maternal and Child Health, “Madonna delle Grazie” Hospital ASM, 75100 Matera, Italy;
| | - Andrea Tinelli
- Department of Obstetrics and Gynecology and CERICSAL (CEntro di RIcerca Clinico SALentino), Veris delli Ponti Hospital, Via Giuseppina delli Ponti, 73020 Scorrano, Lecce, Italy
| | - Bernard Fioretti
- Department of Chemistry, Biology and Biotechnologies, University of Perugia, Via dell’Elce di Sotto 8, 06132 Perugia, Italy; (D.D.B.); (R.G.); (L.S.); (A.B.); (P.T.Q.); (E.G.); (P.S.); (F.R.)
- Laboratorio Interdipartimentale di Fisiopatologia della Riproduzione, Università degli Studi di Perugia, Edificio C, Piano 3 P.zza Lucio Severi, 1, Sant’Andrea delle Fratte, 06132 Perugia, Italy
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Tabassum G, Singh P, Gurung R, Hakami MA, Alkhorayef N, Alsaiari AA, Alqahtani LS, Hasan MR, Rashid S, Kumar A, Dev K, Dohare R. Investigating the role of Kinesin family in lung adenocarcinoma via integrated bioinformatics approach. Sci Rep 2023; 13:9859. [PMID: 37330525 PMCID: PMC10276827 DOI: 10.1038/s41598-023-36842-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2023] [Accepted: 06/11/2023] [Indexed: 06/19/2023] Open
Abstract
Lung cancer is the leading cause of mortality from cancer worldwide. Lung adenocarcinoma (LUAD) is a type of non-small cell lung cancer (NSCLC) with highest prevalence. Kinesins a class of motor proteins are shown to be involved in carcinogenesis. We conducted expression, stage plot and survival analyses on kinesin superfamily (KIF) and scrutinized the key prognostic kinesins. Genomic alterations of these kinesins were studied thereafter via cBioPortal. A protein-protein interaction network (PPIN) of selected kinesins and 50 closest altering genes was constructed followed by gene ontology (GO) term and pathway enrichment analyses. Multivariate survival analysis based on CpG methylation of selected kinesins was performed. Lastly, we conducted tumor immune infiltration analysis. Our results found KIF11/15/18B/20A/2C/4A/C1 to be significantly upregulated and correlated with poor survival in LUAD patients. These genes also showed to be highly associated with cell cycle. Out of our seven selected kinesins, KIFC1 showed the highest genomic alteration with highest number of CpG methylation. Also, CpG island (CGI) cg24827036 was discovered to be linked to LUAD prognosis. Therefore, we deduced that reducing the expression of KIFC1 could be a feasible treatment strategy and that it can be a wonderful individual prognostic biomarker. CGI cg24827036 can also be used as a therapy site in addition to being a great prognostic biomarker.
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Affiliation(s)
- Gulnaz Tabassum
- Department of Biotechnology, Faculty of Natural Sciences, Jamia Millia Islamia, New Delhi, 110025, India
| | - Prithvi Singh
- Centre for Interdisciplinary Research in Basic Sciences, Jamia Millia Islamia, New Delhi, 110025, India
| | - Rishabh Gurung
- Centre for Interdisciplinary Research in Basic Sciences, Jamia Millia Islamia, New Delhi, 110025, India
| | - Mohammed Ageeli Hakami
- Department of Clinical Laboratory Sciences, College of Applied Medical Sciences, Al- Quwayiyah, Shaqra University, Riyadh, 13343, Saudi Arabia
| | - Nada Alkhorayef
- Department of Clinical Laboratory Sciences, College of Applied Medical Sciences, Al- Quwayiyah, Shaqra University, Riyadh, 13343, Saudi Arabia
| | - Ahad Amer Alsaiari
- Department of Clinical Laboratory Sciences, College of Applied Medical Sciences, Taif University, Taif, 21944, Saudi Arabia
| | - Leena S Alqahtani
- Department of Biochemistry, College of Science, University of Jeddah, Jeddah, 23445, Saudi Arabia
| | - Mohammad Raghibul Hasan
- Department of Clinical Laboratory Sciences, College of Applied Medical Sciences, Al- Quwayiyah, Shaqra University, Riyadh, 13343, Saudi Arabia
| | - Summya Rashid
- Department of Pharmacology and Toxicology, College of Pharmacy, Prince Sattam Bin Abdulaziz University, Alkharj, 16278, Saudi Arabia
| | - Atul Kumar
- Department of Biotechnology, Faculty of Natural Sciences, Jamia Millia Islamia, New Delhi, 110025, India
| | - Kapil Dev
- Department of Biotechnology, Faculty of Natural Sciences, Jamia Millia Islamia, New Delhi, 110025, India.
| | - Ravins Dohare
- Centre for Interdisciplinary Research in Basic Sciences, Jamia Millia Islamia, New Delhi, 110025, India.
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Liu Z, Jiang M, Chen X, Liu Q, Guo X, Lin C, Guo Y. Female BMI has an effect on oocyte gene expression pattern. Heliyon 2023; 9:e17493. [PMID: 37408896 PMCID: PMC10318509 DOI: 10.1016/j.heliyon.2023.e17493] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2023] [Revised: 06/08/2023] [Accepted: 06/20/2023] [Indexed: 07/07/2023] Open
Abstract
Purpose To explore the mechanisms by which abnormal female BMI affects oocyte quality, particularly whether it involves the alteration of gene expression patterns and how these patterns may impact clinical outcomes. Methods In Part 1, we performed a retrospective study to compare the clinical outcomes between the female BMI ≥25 kg/m2 and female BMI ≤20 kg/m2 groups. In Part 2, we performed the transcriptome analyses based on the GSE87201 dataset. Results In Part 1, among the clinical outcomes, only the grade 1-2 embryo rate at day 3 of ICSI cycles was significantly different between the two BMI groups; the other outcomes were not. In Part 2, compared with the BMI ≤20 kg/m2 group, the oocyte gene expression pattern of the BMI ≥25 kg/m2 group seemed to result in better oocyte tolerance to exogenous stress, such as intracytoplasmic sperm injection (ICSI). It seemed to explain the result of Part 1 that the BMI ≥25 kg/m2 group had better day-3 embryo quality after ICSI than the BMI ≤20 kg/m2 group. Conclusions Abnormal female BMI affects oocyte quality by altering the gene expression patterns of oocytes. While a female BMI ≥25 kg/m2 is known to have certain detrimental effects on ART, our findings suggest that it can also confer some benefits to oocytes.
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Affiliation(s)
- Zhiren Liu
- Center for Reproductive Medicine, The First Affiliated Hospital of Fujian Medical University, Fuzhou, Fujian, China
- NHC Key Laboratory of Study on Abnormal Gametes and Reproductive Tract (Anhui Medical University), No.81 Meishan Road, Hefei, 230032, Anhui, China
- Key Laboratory of Stem Cell Engineering and Regenerative Medicine, Fujian Province University, China
| | - Mingting Jiang
- Fujian Key Laboratory of Translational Research in Cancer and Neurodegenerative Diseases, The School of Basic Medical Sciences, Fujian Medical University, Fuzhou, Fujian, China
| | - Xingting Chen
- Center for Reproductive Medicine, The First Affiliated Hospital of Fujian Medical University, Fuzhou, Fujian, China
| | - Qicai Liu
- Center for Reproductive Medicine, The First Affiliated Hospital of Fujian Medical University, Fuzhou, Fujian, China
| | - Xinxin Guo
- Center for Reproductive Medicine, The First Affiliated Hospital of Fujian Medical University, Fuzhou, Fujian, China
| | - Chen Lin
- Center for Reproductive Medicine, The First Affiliated Hospital of Fujian Medical University, Fuzhou, Fujian, China
| | - Yujia Guo
- Center for Reproductive Medicine, The First Affiliated Hospital of Fujian Medical University, Fuzhou, Fujian, China
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Mishra D, Mishra A, Nand Rai S, Vamanu E, Singh MP. Demystifying the Role of Prognostic Biomarkers in Breast Cancer through Integrated Transcriptome and Pathway Enrichment Analyses. Diagnostics (Basel) 2023; 13:diagnostics13061142. [PMID: 36980449 PMCID: PMC10046968 DOI: 10.3390/diagnostics13061142] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2023] [Revised: 03/11/2023] [Accepted: 03/13/2023] [Indexed: 03/19/2023] Open
Abstract
Breast cancer (BC) is the most commonly diagnosed cancer and the leading cause of death in women. Researchers have discovered an increasing number of molecular targets for BC prognosis and therapy. However, it is still urgent to identify new biomarkers. Therefore, we evaluated biomarkers that may contribute to the diagnosis and treatment of BC. We searched TCGA datasets and identified differentially expressed genes (DEGs) by comparing tumor (100 samples) and non-tumor (100 samples) tissues using the Deseq2 package. Pathway and functional enrichment analysis of the DEGs was performed using the DAVID (Database for Annotation, Visualization, and Integrated Discovery) database. The protein–protein interaction (PPI) network was identified using the STRING database and visualized through Cytoscape software. Hub gene analysis of the PPI network was completed using cytohubba plugins. The associations between the identified genes and overall survival (OS) were analyzed using a Kaplan–Meier plot. Finally, we have identified hub genes at the transcriptome level. A total of 824 DEGs were identified, which were mostly enriched in cell proliferation, signal transduction, and cell division. The PPI network comprised 822 nodes and 12,145 edges. Elevated expression of the five hub genes AURKA, BUB1B, CCNA2, CCNB2, and PBK are related to poor OS in breast cancer patients. A promoter methylation study showed these genes to be hypomethylated. Validation through genetic alteration and missense mutations resulted in chromosomal instability, leading to improper chromosome segregation causing aneuploidy. The enriched functions and pathways included the cell cycle, oocyte meiosis, and the p53 signaling pathway. The identified five hub genes in breast cancer have the potential to become useful targets for the diagnosis and treatment of breast cancer.
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Affiliation(s)
- Divya Mishra
- Centre of Bioinformatics, Institute of Interdisciplinary Studies, University of Allahabad, Prayagraj 211002, India
| | - Ashish Mishra
- Centre of Bioinformatics, Institute of Interdisciplinary Studies, University of Allahabad, Prayagraj 211002, India
| | - Sachchida Nand Rai
- Faculty of Biotechnology, University of Agricultural Sciences and Veterinary Medicine, 011464 Bucharest, Romania
| | - Emanuel Vamanu
- Centre of Biotechnology, Institute of Interdisciplinary Studies, University of Allahabad, Prayagraj 211002, India
- Correspondence: (E.V.); (M.P.S.)
| | - Mohan P. Singh
- Faculty of Biotechnology, University of Agricultural Sciences and Veterinary Medicine, 011464 Bucharest, Romania
- Correspondence: (E.V.); (M.P.S.)
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Zhang S, Mu L, Wang H, Xu X, Jia L, Niu S, Wang Y, Wang P, Li L, Chai J, Li Z, Zhang Y, Zhang H. Quantitative proteomic analysis uncovers protein-expression profiles during gonadotropin-dependent folliculogenesis in mice†. Biol Reprod 2023; 108:479-491. [PMID: 36477298 DOI: 10.1093/biolre/ioac217] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2022] [Revised: 07/14/2022] [Accepted: 12/02/2022] [Indexed: 12/13/2022] Open
Abstract
Ovarian follicle is the basic functional unit of female reproduction, and is composed of oocyte and surrounding granulosa cells. In mammals, folliculogenesis strictly rely on gonadotropin regulations to determine the ovulation and the quality of eggs. However, the dynamic changes of protein-expressing profiles in follicles at different developmental stages remain largely unknown. By performing mass-spectrometry-based quantitative proteomic analysis of mouse follicles, we provide a proteomic database (~3000 proteins) that covers three key stages of gonadotropin-dependent folliculogenesis. By combining bioinformatics analysis with in situ expression validation, we showed that our proteomic data well reflected physiological changes during folliculogenesis, which provided potential to predict unknown regulators of folliculogenesis. Additionally, by using the oocyte structural protein zona pellucida protein 2 as the internal control, we showed the possibility of our database to predict the expression dynamics of oocyte-expressing proteins during folliculogenesis. Taken together, we provide a high-coverage proteomic database to study protein-expression dynamics during gonadotropin-dependent folliculogenesis in mammals.
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Affiliation(s)
- Shuo Zhang
- State Key Laboratory of Agrobiotechnology, College of Biological Sciences, China Agricultural University, Beijing, China
| | - Lu Mu
- State Key Laboratory of Agrobiotechnology, College of Biological Sciences, China Agricultural University, Beijing, China
| | - Haoran Wang
- State Key Laboratory of Agrobiotechnology, College of Biological Sciences, China Agricultural University, Beijing, China
| | - Xueqiang Xu
- State Key Laboratory of Agrobiotechnology, College of Biological Sciences, China Agricultural University, Beijing, China
| | - Longzhong Jia
- State Key Laboratory of Agrobiotechnology, College of Biological Sciences, China Agricultural University, Beijing, China
| | - Shudong Niu
- State Key Laboratory of Agrobiotechnology, College of Biological Sciences, China Agricultural University, Beijing, China
| | - Yibo Wang
- State Key Laboratory of Agrobiotechnology, College of Biological Sciences, China Agricultural University, Beijing, China
| | - Peike Wang
- State Key Laboratory of Agrobiotechnology, College of Biological Sciences, China Agricultural University, Beijing, China
| | - Lingyu Li
- State Key Laboratory of Agrobiotechnology, College of Biological Sciences, China Agricultural University, Beijing, China
| | - Junyi Chai
- State Key Laboratory of Agrobiotechnology, College of Biological Sciences, China Agricultural University, Beijing, China
| | - Zhen Li
- State Key Laboratory of Plant Physiology and Biochemistry, College of Biological Sciences, China Agricultural University, Beijing, China
| | - Yan Zhang
- State Key Laboratory of Agrobiotechnology, College of Biological Sciences, China Agricultural University, Beijing, China
| | - Hua Zhang
- State Key Laboratory of Agrobiotechnology, College of Biological Sciences, China Agricultural University, Beijing, China
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Identification of Prognostic Biomarkers for Suppressing Tumorigenesis and Metastasis of Hepatocellular Carcinoma through Transcriptome Analysis. Diagnostics (Basel) 2023; 13:diagnostics13050965. [PMID: 36900109 PMCID: PMC10001411 DOI: 10.3390/diagnostics13050965] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2022] [Accepted: 02/16/2023] [Indexed: 03/06/2023] Open
Abstract
Cancer is one of the deadliest diseases developed through tumorigenesis and could be fatal if it reaches the metastatic phase. The novelty of the present investigation is to explore the prognostic biomarkers in hepatocellular carcinoma (HCC) that could develop glioblastoma multiforme (GBM) due to metastasis. The analysis was conducted using RNA-seq datasets for both HCC (PRJNA494560 and PRJNA347513) and GBM (PRJNA494560 and PRJNA414787) from Gene Expression Omnibus (GEO). This study identified 13 hub genes found to be overexpressed in both GBM and HCC. A promoter methylation study showed these genes to be hypomethylated. Validation through genetic alteration and missense mutations resulted in chromosomal instability, leading to improper chromosome segregation, causing aneuploidy. A 13-gene predictive model was obtained and validated using a KM plot. These hub genes could be prognostic biomarkers and potential therapeutic targets, inhibition of which could suppress tumorigenesis and metastasis.
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CENP-F-dependent DRP1 function regulates APC/C activity during oocyte meiosis I. Nat Commun 2022; 13:7732. [PMID: 36513638 PMCID: PMC9747930 DOI: 10.1038/s41467-022-35461-5] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2021] [Accepted: 12/05/2022] [Indexed: 12/15/2022] Open
Abstract
Chromosome segregation is initiated by cohesin degradation, which is driven by anaphase-promoting complex/cyclosome (APC/C). Chromosome cohesin is removed by activated separase, with the degradation of securin and cyclinB1. Dynamin-related protein 1 (DRP1), a component of the mitochondrial fission machinery, is related to cyclin dynamics in mitosis progression. Here, we show that DRP1 is recruited to the kinetochore by centromeric Centromere protein F (CENP-F) after nuclear envelope breakdown in mouse oocytes. Loss of DRP1 during prometaphase leads to premature cohesin degradation and chromosome segregation. Importantly, acute DRP1 depletion activates separase by initiating cyclinB1 and securin degradation during the metaphase-to-anaphase transition. Finally, we demonstrate that DRP1 is bound to APC2 to restrain the E3 ligase activity of APC/C. In conclusion, DRP1 is a CENP-F-dependent atypical spindle assembly checkpoint (SAC) protein that modulates metaphase-to-anaphase transition by controlling APC/C activity during meiosis I in oocytes.
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Tarasenko TA, Koulintchenko MV. Heterogeneity of the Mitochondrial Population in Cells of Plants and Other Organisms. Mol Biol 2022. [DOI: 10.1134/s0026893322020157] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Zhai J, Zhang J, Zhang L, Liu X, Deng W, Wang H, Zhang Z, Liu W, Chen B, Wu C, Long H, Xu B, Ying X, Zou H, He J, Li P, Hu T, Xiang W, Li J. Autotransplantation of the ovarian cortex after in-vitro activation for infertility treatment: a shortened procedure. Hum Reprod 2021; 36:2134-2147. [PMID: 34268564 DOI: 10.1093/humrep/deab143] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2020] [Revised: 05/10/2021] [Indexed: 12/26/2022] Open
Abstract
STUDY QUESTION Is it possible to establish a new in-vitro activation (IVA) protocol for infertility treatment? SUMMARY ANSWER A new IVA procedure is an efficient and easily performed approach for infertility treatment of patients with diminished ovarian reserve (DOR). WHAT IS KNOWN ALREADY IVA of primordial follicles with or without stimulators has been developed to treat patients with primary ovarian insufficiency (POI) successfully. However, the efficiency of the procedure is still very low. There is a requirement to optimize the protocol with increased efficiency for clinical application. STUDY DESIGN, SIZE, DURATION Newborn mouse ovaries were used to establish a new 1-h IVA protocol with the mechanistic target of rapamycin (mTOR) stimulator phosphatidic acid (PA, 200 µM) and the phosphatidylinositol-3-kinase (PI3K) stimulator 740Y-P (250 µg/ml); a prospective observational cohort study in POI patients was performed on 15 POI patients and 3 poor ovarian response (POR) patients in three different centers of reproductive medicine in China. PARTICIPANTS/MATERIALS, SETTING, METHODS One-third of ovarian cortex was removed and processed into bigger strips (1 × 1 cm2, 1-2 mm thickness). Strips were then sutured back after treatment. The new approach only requires one laparoscopic surgery. MAIN RESULTS AND THE ROLE OF CHANCE Follicular activation and development increased in cultured mouse and human ovarian tissues after 1 h of stimulator treatment. Compared with tiny ovarian cortex pieces (1 × 1 mm2), large ovarian strips (1 × 1 cm2) showed the lowest apoptotic signals after incubation. We applied the orthotropic transplantation procedure with large strips in the clinic, and 9 of 15 POI patients showed at least one-wave follicular growth during the monitoring period. One patient was reported with one healthy delivery after natural conception and another patient with a healthy singleton delivery after IVF. All the contacted patients (n = 13) responded with no side effects on their health 2-4 years after IVA procedure. LIMITATIONS, REASONS FOR CAUTION Further clinical trials with a large number of well-defined patients are required to compare different IVA protocols. A long-term follow-up system should be set up to monitor patient's health in the future cohort study. WIDER IMPLICATIONS OF THE FINDINGS By using stimulators, the findings in the study provide a more efficient IVA protocol for the treatment of patients with DOR. It requires only one laparoscopic surgery and thus minimizes patients' discomfort and costs. This strategy could be useful for patients diagnosed with POI and desire pregnancy as soon as possible after the operation. STUDY FUNDING/COMPETING INTEREST(S) This work was supported by the National Key Research and Development Program of China (2018YFC1003703 and 2018YFC1004203); the National Natural Science Foundation of China (81871221); Co-construction of Provincial Department (201601006). The authors have no conflict of interest to disclose. TRIAL REGISTRATION NUMBER ChiCTR2000030872.
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Affiliation(s)
- Jun Zhai
- Institute of Reproductive Health, Center of Reproductive Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.,State Key Laboratory of Reproductive Medicine, Nanjing Medical University, Nanjing, Jiangsu, China
| | - Jing Zhang
- Center for Reproductive Medicine, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Ling Zhang
- Henan Key Laboratory of Reproduction and Genetics, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Xiaochun Liu
- Shenzhen IVF Gynecological Hospital, Shenzhen, China
| | - Weifen Deng
- Reproductive Medicine Center, Shenzhen Hengsheng Hospital, Shenzhen, China
| | - Hong Wang
- Beijing Jiaen Hospital, Bejing, China
| | - Zhiguo Zhang
- Department of Obstetrics and Gynecology, Reproductive Medicine Center, The First Affiliated Hospital of Anhui Medical University, Hefei, Anhui, China
| | - Wei Liu
- State Key Laboratory of Reproductive Medicine, Nanjing Medical University, Nanjing, Jiangsu, China
| | - Beili Chen
- Department of Obstetrics and Gynecology, Reproductive Medicine Center, The First Affiliated Hospital of Anhui Medical University, Hefei, Anhui, China
| | - Chongbo Wu
- Shenzhen IVF Gynecological Hospital, Shenzhen, China
| | - Huidong Long
- Shenzhen IVF Gynecological Hospital, Shenzhen, China
| | - Boqun Xu
- Department of Obstetrics and Gynecology, The Second Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Xiaoyan Ying
- Department of Obstetrics and Gynecology, The Second Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Huijuan Zou
- Department of Obstetrics and Gynecology, Reproductive Medicine Center, The First Affiliated Hospital of Anhui Medical University, Hefei, Anhui, China
| | - Jun He
- Nanjing Ovahealth Biotechnology, Nanjing, China
| | - Pei Li
- Beijing Jiaen Hospital, Bejing, China
| | - Tiling Hu
- Beijing Jiaen Hospital, Bejing, China
| | - Wenpei Xiang
- Institute of Reproductive Health, Center of Reproductive Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Jing Li
- State Key Laboratory of Reproductive Medicine, Nanjing Medical University, Nanjing, Jiangsu, China
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Lan Y, Zhang S, Gong F, Lu C, Lin G, Hu L. The mitochondrial DNA copy number of cumulus granulosa cells may be related to the maturity of oocyte cytoplasm. Hum Reprod 2021; 35:1120-1129. [PMID: 32358599 DOI: 10.1093/humrep/deaa085] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2019] [Revised: 02/20/2020] [Accepted: 03/29/2020] [Indexed: 02/06/2023] Open
Abstract
STUDY QUESTION Is the mitochondrial DNA (mtDNA) copy number of cumulus granulosa cells (CGCs) related to the maturation of oocyte cytoplasm? SUMMARY ANSWER Compared with the mtDNA copy number of CGCs from germinal vesicles (GV), CGCs from Metaphase I (MI) oocytes appear to have a lower mtDNA copy number. WHAT IS KNOWN ALREADY The growth and development of CGCs and oocyte are synchronised. The interaction between CGCs and the oocyte provides the appropriate balance of energy, which is necessary for mammalian oocyte development. Moreover, in the oocyte-cumulus complex (OCC), mature oocytes with higher mtDNA copy numbers tend to have corresponding CGCs with higher mtDNA copy numbers. STUDY DESIGN, SIZE, DURATION This is a prospective study of 302 OCCs obtained from 70 women undergoing in vitro fertilisation with intracytoplasmic sperm injection (ICSI) at the Reproductive and Genetic Hospital of CITIC-Xiangya, between 24 February 2018 and 21 December 2019. The CGCs were divided into three groups (GV, MI and MII stages) based on the maturation status of their corresponding oocyte. The sample sizes (n = 302) of CGCs in the three stages were 63 (CGCGV), 70 (CGCMI) and 169 (CGCMII), respectively. Some of the samples (n = 257) was used to quantify the mtDNA copy number, while the rest (n = 45) were used to analyse the expression level of mitochondrial genes. Furthermore, we retrieved 82 immature oocytes from among the 257 OCCs used for mtDNA copy numbers, including 36 GV oocytes and 46 MI oocytes, for analysis of oocyte mtDNA. PARTICIPANTS/MATERIALS, SETTING, METHODS We selected genes with high consistency of real-time PCR results to accurately measure the mtDNA copy number by testing the efficacy and the reproducibility in whole genome amplification (WGA) samples from a human embryonic stem cell line. The CGCs of each oocyte were individually isolated. The mtDNA copy number and gene expression of the CGCs were assessed using real-time PCR techniques. Mitochondrial DNA copy number of the corresponding immature oocytes was also evaluated. MAIN RESULTS AND THE ROLE OF CHANCE MT-ND1, MT-CO1 and β-globin genes were chosen for the assessment of mtDNA content, and mRNA expressions of MT-ND1, MT-CO1, PGC-1α and TFAM were also measured. The genome of 257 CGCs and 82 immature oocytes were amplified according to the multiple displacement amplification (MDA) protocol, and RNA was extracted from 45 CGCs. Compared with CGCGV, CGCMI had a significantly lower mtDNA copy number. In the MT-ND1 assay, the CGCGV: CGCMI was [270 ± 302]: [134 ± 201], P = 0.015. In the MT-CO1 assay, CGCGV: CGCMI was [205 ± 228]: [92 ± 112], P = 0.026. There was no statistical difference in mtDNA between CGCGV and CGCMII. In the MT-ND1 assay, CGCGV: CGCMII was [270 ± 302]: [175 ± 223], P = 0.074. In the MT-CO1 assay, CGCGV: CGCMII was [205 ± 228]: [119 ± 192], P = 0.077. No statistical difference of mtDNA copy number was observed between CGCMI and CGCMII. In the MT-ND1 assay, CGCMI: CGCMII was [134 ± 201]: [175 ± 223], P = 0.422. In the MT-CO1 assay, CGCMI: CGCMII was [92 ± 112]: [119 ± 192], P = 0.478. To verify the reliability of the above results, we further analysed the mtDNA copy number of CGCs of 14 patients with GV, MI and MII oocytes, and the results showed that the mtDNA copy number of CGCMI may be lower. The mtDNA copy number of CGCGV and CGCMI was statistically different in the MT-ND1 assay where CGCGV: CGCMI was [249 ± 173]: [118 ± 113], P = 0.016, but in the MT-CO1 assay, CGCGV: CGCMI was [208 ± 199]: [83 ± 98], P = 0.109. There was no significant difference in mtDNA between CGCGV and CGCMII. In the MT-ND1 assay, CGCGV: CGCMII was [249 ± 173]: [185 ± 200], P = 0.096. In the MT-CO1 assay, CGCGV: CGCMII was [208 ± 199]: [114 ± 139], P = 0.096. There was also no significant difference in mtDNA between CGCMI and CGCMII. In the MT-ND1 assay, CGCMI: CGCMII was [118 ± 113]: [185 ± 200], P = 0.198. In the MT-CO1 assay, CGCMI: CGCMII was [83 ± 98]: [114 ± 139], P = 0.470. Moreover, there were no statistical differences in the expression levels of MT-ND1, MT-CO1, PGC-1α and TFAM between CGCGV, CGCMI and CGCMII (P > 0.05). LARGE SCALE DATA N/A. LIMITATIONS, REASONS FOR CAUTION Due to the ethical issues, the study did not quantify the mtDNA content of MII oocytes. Thus, whether the change in mtDNA copy number in CGCs is related to the different developmental stages of oocytes has not been further confirmed. Moreover, the sample size was relatively small. WIDER IMPLICATIONS OF THE FINDINGS The mtDNA copy number of CGCs decreases from the GV phase to the MI phase and stays steady from the MI to MII stage. At different stages of oocyte maturation, the mtDNA of CGCs may undergo self-degradation and replication to meet the energy requirements of the corresponding oocyte and the maturation of the oocyte cytoplasm. STUDY FUNDING/COMPETING INTEREST(S) Funding was provided by the National Key R&D Program of China (Grant 2018YFC1003100, to L.H.), the science and technology major project of the Ministry of Science and Technology of Hunan Province, China (grant 2017SK1030, to G.L.), the National Natural Science Foundation of China (grant 81873478, to L.H.), and Merck Serono China Research Fund for Fertility Experts (to L.H.). There is no conflict of interest.
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Affiliation(s)
- Yueyun Lan
- Institute of Reproduction and Stem Cell Engineering, School of Basic Medical Science, Central South University, Changsha, Hunan, China.,Reproductive and Genetic Hospital of CITIC-Xiangya, Changsha, Hunan, China.,Genetic and Metabolic Central Laboratory, Birth Defect Prevention Research Institute, Maternal and Child Health Hospital, Children's Hospital of Guangxi Zhuang Autonomous Region, Nanning, China
| | - Shuoping Zhang
- Reproductive and Genetic Hospital of CITIC-Xiangya, Changsha, Hunan, China.,Clinical Research Center For Reproduction and Genetics in Hunan Province, Changsha, Hunan, China
| | - Fei Gong
- Institute of Reproduction and Stem Cell Engineering, School of Basic Medical Science, Central South University, Changsha, Hunan, China.,Reproductive and Genetic Hospital of CITIC-Xiangya, Changsha, Hunan, China.,NHC Key Laboratory of Human Stem Cell and Reproductive Engineering (Central South University), Changsha, Hunan, China.,Clinical Research Center For Reproduction and Genetics in Hunan Province, Changsha, Hunan, China
| | - Changfu Lu
- Institute of Reproduction and Stem Cell Engineering, School of Basic Medical Science, Central South University, Changsha, Hunan, China.,Reproductive and Genetic Hospital of CITIC-Xiangya, Changsha, Hunan, China.,NHC Key Laboratory of Human Stem Cell and Reproductive Engineering (Central South University), Changsha, Hunan, China.,Clinical Research Center For Reproduction and Genetics in Hunan Province, Changsha, Hunan, China
| | - Ge Lin
- Institute of Reproduction and Stem Cell Engineering, School of Basic Medical Science, Central South University, Changsha, Hunan, China.,Reproductive and Genetic Hospital of CITIC-Xiangya, Changsha, Hunan, China.,National Engineering and Research Center of Human Stem Cells, Changsha, Hunan, China.,NHC Key Laboratory of Human Stem Cell and Reproductive Engineering (Central South University), Changsha, Hunan, China.,Clinical Research Center For Reproduction and Genetics in Hunan Province, Changsha, Hunan, China
| | - Liang Hu
- Institute of Reproduction and Stem Cell Engineering, School of Basic Medical Science, Central South University, Changsha, Hunan, China.,Reproductive and Genetic Hospital of CITIC-Xiangya, Changsha, Hunan, China.,National Engineering and Research Center of Human Stem Cells, Changsha, Hunan, China.,NHC Key Laboratory of Human Stem Cell and Reproductive Engineering (Central South University), Changsha, Hunan, China.,Clinical Research Center For Reproduction and Genetics in Hunan Province, Changsha, Hunan, China
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11
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Li A, Wang HX, Wang F, Fan LH, Zhao ZH, Han F, Li J, Lei WL, Zhou Q, Shi YP, Song CY, Schatten H, Sun QY, Guo XP. Nuclear and cytoplasmic quality of oocytes derived from serum-free culture of secondary follicles in vitro. J Cell Physiol 2021; 236:5352-5361. [PMID: 33586215 DOI: 10.1002/jcp.30232] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2020] [Revised: 12/08/2020] [Accepted: 12/11/2020] [Indexed: 12/28/2022]
Abstract
In vitro culture of follicles is a promising technology to generate large quantities of mature oocytes and it could offer a novel option of assisted reproductive technologies. Here we described a 2-dimensional follicular serum-free culture system with 3-dimensional effect that can make secondary follicles develop into antral follicles (78.52%), generating developmentally mature oocytes in vitro (66.45%). The oocytes in this serum-free system completed the first meiosis; spindle assembly and chromosome congression in most oocytes matured from follicular culture were normal. However, these oocytes showed significantly lower activation and embryonic development rates, and their ability to produce Ca2+ oscillations was also lower in response to parthenogenetic activation, after which a 2-cell embryonic developmental block occurred. Oocytes matured from follicular culture displayed increased abnormal mitochondrial distribution and increased reactive oxygen species levels when compared to in vivo matured oocytes. These data are important for understanding the reasons for reduced developmental potential of oocytes matured from follicular culture, and for further improving the cultivation system.
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Affiliation(s)
- Ang Li
- Faculty of Biochemistry and Molecular Biology, Shanxi Medical University, Taiyuan, Shanxi, China.,Shanxi Province Reproductive Science Institute, Taiyuan, Shanxi, China.,State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing, China
| | - Huai-Xiu Wang
- Shanxi Province Reproductive Science Institute, Taiyuan, Shanxi, China
| | | | - Li-Hua Fan
- State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing, China
| | - Zheng-Hui Zhao
- State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing, China
| | - Feng Han
- State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing, China
| | | | - Wen-Long Lei
- State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing, China
| | - Qian Zhou
- State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing, China
| | - Ya-Ping Shi
- Shanxi Province Reproductive Science Institute, Taiyuan, Shanxi, China
| | - Chun-Ying Song
- Shanxi Province Reproductive Science Institute, Taiyuan, Shanxi, China
| | - Heide Schatten
- Department of Veterinary Pathobiology, University of Missouri, Columbia, Missouri, USA
| | - Qing-Yuan Sun
- Fertility Preservation Lab, Reproductive Medicine Center, Guangdong Second Provincial General Hospital, Guangzhou, China
| | - Xing-Ping Guo
- Faculty of Biochemistry and Molecular Biology, Shanxi Medical University, Taiyuan, Shanxi, China.,Shanxi Province Reproductive Science Institute, Taiyuan, Shanxi, China
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12
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Li A, Wang F, Li L, Fan LH, Meng TG, Li QN, Wang Y, Yue W, Wang HX, Shi YP, Li HX, Schatten H, Sun QY, Guo XP. Mechanistic insights into the reduced developmental capacity of in vitro matured oocytes and importance of cumulus cells in oocyte quality determination. J Cell Physiol 2020; 235:9743-9751. [PMID: 32415704 DOI: 10.1002/jcp.29786] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2019] [Revised: 04/12/2020] [Accepted: 04/29/2020] [Indexed: 12/17/2022]
Abstract
In vitro maturation of oocytes is a promising assisted reproductive technology (ART) for infertility treatment, although it is still not a routine technique for human ART due to reduced embryonic development. The aim of the present study was to clarify the possible reasons for reduced capacity of in vitro matured oocytes. Our results showed that the oocytes matured in vitro displayed increased abnormal mitochondrial distribution, reduced mitochondrial membrane potential, and increased reactive oxygen species levels when compared to in vivo matured oocytes. These results were not different in oocytes matured in vitro with or without cumulus cells. Notably, in vitro matured oocytes displayed increased mitochondrial DNA numbers probably due to functional compensation. In vitro matured oocytes showed significantly lower activation and embryonic development rates, and their ability to produce Ca2+ oscillations was much lower in response to parthenogenetic activation, especially in oocytes matured in vitro without cumulus cells with nearly half of them failing to produce calcium waves upon strontium chloride stimulation. These data are important for understanding the reasons for reduced developmental potential of in vitro matured oocytes and the importance of cumulus cells for oocyte quality.
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Affiliation(s)
- Ang Li
- Faculty of Biochemistry and Molecular Biology, Shanxi Medical University, Taiyuan, China.,Shanxi Province Reproductive Science Institute, Taiyuan, China.,State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing, China
| | - Feng Wang
- State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing, China
| | - Li Li
- 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
| | - Li-Hua Fan
- 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
| | - Qian-Nan Li
- State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing, China
| | - Yue 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
| | - Wei Yue
- 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
| | - Huai-Xiu Wang
- Shanxi Province Reproductive Science Institute, Taiyuan, China
| | - Ya-Ping Shi
- Shanxi Province Reproductive Science Institute, Taiyuan, China
| | - Hong-Xia Li
- Shanxi Province Reproductive Science Institute, Taiyuan, China
| | - Heide Schatten
- Department of Veterinary Pathobiology, University of Missouri, Columbia, Missouri
| | - Qing-Yuan Sun
- 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
| | - Xing-Ping Guo
- Faculty of Biochemistry and Molecular Biology, Shanxi Medical University, Taiyuan, China.,Shanxi Province Reproductive Science Institute, Taiyuan, China
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13
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Carnevale EM, Catandi GD, Fresa K. Equine Aging and the Oocyte: A Potential Model for Reproductive Aging in Women. J Equine Vet Sci 2020; 89:103022. [PMID: 32563447 DOI: 10.1016/j.jevs.2020.103022] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2020] [Revised: 04/07/2020] [Accepted: 04/08/2020] [Indexed: 12/25/2022]
Abstract
Numerous similarities in reproductive aging have been documented between the mare and woman. Aging is associated with a decline in fertility. In mares and women, oocyte transfer procedures were initially used to establish that oocyte donor age is associated with oocyte quality. Age-associated differences in oocytes include altered morphology, gene expression, and developmental potential. Reactive oxygen species and mitochondrial dysfunction are thought to be important contributors to loss of oocyte quality. In the woman, aneuploidy is a primary consideration with maternal aging. Although misalignment of chromosomes during meiosis has been observed in the mare, less is known in this area. Reproductive aging will be reviewed in the mare and compared with the woman with emphasis on factors that affect oocyte quality and developmental potential. Areas in which the mare could be used as a research model to study reproductive aging in women will be highlighted.
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Affiliation(s)
- Elaine M Carnevale
- Equine Reproduction Laboratory, Department of Biomedical Sciences, College of Veterinary Medicine and Biomedical Sciences, Colorado State University, Fort Collins, CO.
| | - Giovana D Catandi
- Equine Reproduction Laboratory, Department of Biomedical Sciences, College of Veterinary Medicine and Biomedical Sciences, Colorado State University, Fort Collins, CO
| | - Kyle Fresa
- Equine Reproduction Laboratory, Department of Biomedical Sciences, College of Veterinary Medicine and Biomedical Sciences, Colorado State University, Fort Collins, CO
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14
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Chiaratti MR, Macabelli CH, Augusto Neto JD, Grejo MP, Pandey AK, Perecin F, Collado MD. Maternal transmission of mitochondrial diseases. Genet Mol Biol 2020; 43:e20190095. [PMID: 32141474 PMCID: PMC7197987 DOI: 10.1590/1678-4685-gmb-2019-0095] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2019] [Accepted: 11/01/2019] [Indexed: 12/19/2022] Open
Abstract
Given the major role of the mitochondrion in cellular homeostasis, dysfunctions of this organelle may lead to several common diseases in humans. Among these, maternal diseases linked to mitochondrial DNA (mtDNA) mutations are of special interest due to the unclear pattern of mitochondrial inheritance. Multiple copies of mtDNA are present in a cell, each encoding for 37 genes essential for mitochondrial function. In cases of mtDNA mutations, mitochondrial malfunctioning relies on mutation load, as mutant and wild-type molecules may co-exist within the cell. Since the mutation load associated with disease manifestation varies for different mutations and tissues, it is hard to predict the progeny phenotype based on mutation load in the progenitor. In addition, poorly understood mechanisms act in the female germline to prevent the accumulation of deleterious mtDNA in the following generations. In this review, we outline basic aspects of mitochondrial inheritance in mammals and how they may lead to maternally-inherited diseases. Furthermore, we discuss potential therapeutic strategies for these diseases, which may be used in the future to prevent their transmission.
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Affiliation(s)
- Marcos R Chiaratti
- Universidade Federal de São Carlos, Departamento de Genética e Evolução, Laboratório de Genética e Biotecnologia, São Carlos, SP, Brazil
| | - Carolina H Macabelli
- Universidade Federal de São Carlos, Departamento de Genética e Evolução, Laboratório de Genética e Biotecnologia, São Carlos, SP, Brazil
| | - José Djaci Augusto Neto
- Universidade Federal de São Carlos, Departamento de Genética e Evolução, Laboratório de Genética e Biotecnologia, São Carlos, SP, Brazil
| | - Mateus Priolo Grejo
- Universidade Federal de São Carlos, Departamento de Genética e Evolução, Laboratório de Genética e Biotecnologia, São Carlos, SP, Brazil
| | - Anand Kumar Pandey
- Lala Lajpat Rai University of Veterinary and Animal Sciences, Hisar, Haryana, India
| | - Felipe Perecin
- Universidade de São Paulo, Faculdade de Zootecnia e Engenharia de Alimentos, Departamento de Medicina Veterinária, Laboratório de Morfofisiologia Molecular e Desenvolvimento, Pirassununga, SP, Brazil
| | - Maite Del Collado
- Universidade de São Paulo, Faculdade de Zootecnia e Engenharia de Alimentos, Departamento de Medicina Veterinária, Laboratório de Morfofisiologia Molecular e Desenvolvimento, Pirassununga, SP, Brazil
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15
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Barros FDDA, Adona PR, Guemra S, Damião BCM. Oxidative homeostasis in oocyte competence for in vitro embryo development. Anim Sci J 2019; 90:1343-1349. [PMID: 31469477 DOI: 10.1111/asj.13256] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2018] [Revised: 03/18/2019] [Accepted: 05/27/2019] [Indexed: 01/08/2023]
Abstract
The objective of this study was to evaluate the levels of reactive oxygen species (ROS) and glutathione (GSH) in oocytes from follicles of different diameters and their relevance in the in vitro production of embryos (IVPE). Bovine ovaries were aspirated according to the diameter of the follicle [2-8 (general), 4-8 (large), and 2 < 4 mm (small)]. The oocytes were evaluated for levels of ROS, GSH, in vitro maturation, and IVPE. Higher levels of ROS and GSH were observed (p < 0.05) in oocytes of the large group (85.6 ± 7.2 and 140.0 ± 9.6) followed by those in the general (81.1 ± 10.5 and 134.3 ± 7.8) and small (73.5 ± 10.1 and 125.0 ± 10.6) groups. However, the proportion of ROS/GSH did not differ (p > 0.05) between the general, large, and small groups. The maturation was higher (p < 0.05) in the large group (87.8 ± 3.0%) than in the small group (72.2 ± 5.8%), but both were similar (p > 0.05) to that in the general group (82.2 ± 2.5%), whereas the IVPE of the large group (57.3 ± 3.0%) was higher (p < 0.05) than those in the general (44.7 ± 4.4%) and small (34.0 ± 4.0%) groups. We report that oocytes from large follicles are more competent for IVPE, whereas higher levels of ROS and GSH appear to be correlated with oocyte competence, as long as oxidative homeostasis is retained.
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Affiliation(s)
| | | | - Samuel Guemra
- Unopar, Saúde e Produção de Ruminantes, Arapongas, PR, Brazil
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16
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May-Panloup P, Brochard V, Hamel JF, Desquiret-Dumas V, Chupin S, Reynier P, Duranthon V. Maternal ageing impairs mitochondrial DNA kinetics during early embryogenesis in mice. Hum Reprod 2019; 34:1313-1324. [DOI: 10.1093/humrep/dez054] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2019] [Revised: 03/26/2019] [Indexed: 01/03/2023] Open
Abstract
Abstract
STUDY QUESTION
Does ageing affect the kinetics of the mitochondrial pool during oogenesis and early embryogenesis?
SUMMARY ANSWER
While we found no age-related change during oogenesis, the kinetics of mitochondrial DNA content and the expression of the factors involved in mitochondrial biogenesis appeared to be significantly altered during embryogenesis.
WHAT IS KNOWN ALREADY
Oocyte mitochondria are necessary for embryonic development. The morphological and functional alterations of mitochondria, as well as the qualitative and quantitative mtDNA anomalies, observed during ovarian ageing may be responsible for the alteration of oocyte competence and embryonic development.
STUDY DESIGN, SIZE, DURATION
The study, conducted from November 2016 to November 2017, used 40 mice aged 5–8 weeks and 45 mice aged 9–11 months (C57Bl6/CBA F(1)). A total of 488 immature oocytes, with a diameter ranging from 20 μm to more than 80 μm, were collected from ovaries, and 1088 mature oocytes or embryos at different developmental stages (two PN, one-cell, i.e. syngamy, two-cell, four-cell, eight-cell, morula and blastocyst) were obtained after ovarian stimulation and, for embryos, mating.
PARTICIPANTS/MATERIALS, SETTING, METHODS
Mitochondrial DNA was quantified by quantitative PCR. We used quantitative reverse transcriptase PCR (RT-PCR) (microfluidic method) to study the relative expression of three genes involved in the key steps of embryogenesis, i.e. embryonic genome activation (HSPA1) and differentiation (CDX2 and NANOG), two mtDNA genes (CYB and ND2) and five genes essential for mitochondrial biogenesis (PPARGC1A, NRF1, POLG, TFAM and PRKAA). The statistical analysis was based on mixed linear regression models applying a logistic link function (STATA v13.1 software), with values of P < 0.05 being considered significant.
MAIN RESULTS AND THE ROLE OF CHANCE
During oogenesis, there was a significant increase in oocyte mtDNA content (P < 0.0001) without any difference between the two groups of mice (P = 0.73). During the first phase of embryogenesis, i.e. up to the two-cell stage, embryonic mtDNA decreased significantly in the aged mice (P < 0.0001), whereas it was stable for young mice (young/old difference P = 0.015). The second phase of embryogenesis, i.e. between the two-cell and eight-cell stages, was characterized by a decrease in embryonic mtDNA for young mice (P = 0.013) only (young/old difference P = 0.038). During the third phase, i.e. between the eight-cell and blastocyst stage, there was a significant increase in embryonic mtDNA content in young mice (P < 0.0001) but not found in aged mice (young/old difference P = 0.002). We also noted a faster expression of CDX2 and NANOG in the aged mice than in the young mice during the second (P = 0.007 and P = 0.02, respectively) and the third phase (P = 0.01 and P = 0.008, respectively) of embryogenesis. The expression of mitochondrial genes CYB and ND2 followed similar kinetics and was equivalent for both groups of mice, with a significant increase during the third phase (P < 0.01). Of the five genes involved in mitochondrial biogenesis, i.e. PPARGC1A, NRF1, POLG, TFAM and PRKAA, the expression of three genes decreased significantly during the first phase only in young mice (NRF1, P = 0.018; POLGA, P = 0.002; PRKAA, P = 0.010), with no subsequent difference compared to old mice. In conclusion, during early embryogenesis in the old mice, we suspect that the lack of a replicatory burst before the two-cell stage, associated with the early arrival at the minimum threshold value of mtDNA, together with the absence of an increase of mtDNA during the last phase, might potentially deregulate the key stages of early embryogenesis.
LARGE SCALE DATA
N/A.
LIMITATIONS, REASONS FOR CAUTION
Because of the ethical impossibility of working on a human, this study was conducted only on a murine model. As superovulation was used, we cannot totally exclude that the differences observed were, at least partially, influenced by differences in ovarian response between young and old mice.
WIDER IMPLICATIONS OF THE FINDINGS
Our findings suggest a pathophysiological explanation for the link observed between mitochondria and the deterioration of oocyte quality and early embryonic development with age.
STUDY FUNDING/COMPETING INTEREST(S)
This work was supported by the University of Angers, France, by the French national research centres INSERM and the CNRS and, in part, by PHASE Division, INRA. There are no competing interests.
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Affiliation(s)
- P May-Panloup
- MITOLAB, Institut MITOVASC, CNRS 6015, INSERM U1083, Université d’Angers, Angers, France
- Laboratoire de Biologie de la Reproduction, Centre Hospitalier Universitaire d’Angers, Angers, France
| | - V Brochard
- UMR BDR, INRA, ENVA, Université Paris Saclay, Jouy-en-Josas, France
| | - J F Hamel
- SFR ICAT, Université Angers, Angers, France; DRCI, Cellule Data Management, CHU Angers, Angers, France
| | - V Desquiret-Dumas
- MITOLAB, Institut MITOVASC, CNRS 6015, INSERM U1083, Université d’Angers, Angers, France
- Département de Biochimie et Génétique, Centre Hospitalier Universitaire d’Angers, Angers, France
| | - S Chupin
- Département de Biochimie et Génétique, Centre Hospitalier Universitaire d’Angers, Angers, France
| | - P Reynier
- MITOLAB, Institut MITOVASC, CNRS 6015, INSERM U1083, Université d’Angers, Angers, France
- Département de Biochimie et Génétique, Centre Hospitalier Universitaire d’Angers, Angers, France
| | - V Duranthon
- UMR BDR, INRA, ENVA, Université Paris Saclay, Jouy-en-Josas, France
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17
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Gao L, Du M, Zhuan Q, Luo Y, Li J, Hou Y, Zeng S, Zhu S, Fu X. Melatonin rescues the aneuploidy in mice vitrified oocytes by regulating mitochondrial heat product. Cryobiology 2019; 89:68-75. [PMID: 31082378 DOI: 10.1016/j.cryobiol.2019.05.005] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2019] [Revised: 05/06/2019] [Accepted: 05/07/2019] [Indexed: 01/13/2023]
Abstract
Vitrification of germinal vesicle (GV) stage oocytes has been shown to be closely associated with decreased rates of meiosis maturation and increased rates of aneuploidy. However, little is known about the effects of melatonin on these events in mice vitrified GV oocytes. In this study, the effects of melatonin on meiosis maturation potential and the incidence rate of aneuploidy in mouse vitrified oocytes were analyzed by supplementing in vitro maturation (IVM) solution with melatonin at different concentrations. This study, for the first time, showed that the mitochondrial heat production was markedly increased in vitrified oocytes (P < 0.05), which compromised the first polar body extrusion (PBE) of vitrified oocytes (73.3% vs. 85.1%, P < 0.05). However, 10-11 mol/L melatonin could significantly decrease mitochondrial heat production and ROS level (9.1 vs. 12.0 pixels, P < 0.05), meanwhile increase ATP level (1.1 vs. 0.88 pmol, P < 0.05) and mtDNA copies (107438 vs. 67869, P < 0.05), which rescued the abnormal chromosome alignment (32% vs. 69%, P < 0.05) and reduced the incidence of aneuploidy (15.6% vs. 38.5%, P < 0.05) in vitrified oocytes. The meiosis maturation ability of vitrified oocytes with melatonin supplementation was similar to that of fresh ones (83.4% vs. 85.1%, P > 0.05). Collectively, our data revealed that melatonin has a protective action against vitrification-induced injuries of oocytes meiosis maturation.
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Affiliation(s)
- Lei Gao
- National Engineering Laboratory for Animal Breeding and Key Laboratory of Animal Genetics, Breeding and Reproduction, Ministry of Agriculture, College of Animal Science and Technology, China Agricultural University, Beijing, 100193, PR China
| | - Ming Du
- National Engineering Laboratory for Animal Breeding and Key Laboratory of Animal Genetics, Breeding and Reproduction, Ministry of Agriculture, College of Animal Science and Technology, China Agricultural University, Beijing, 100193, PR China
| | - Qingrui Zhuan
- National Engineering Laboratory for Animal Breeding and Key Laboratory of Animal Genetics, Breeding and Reproduction, Ministry of Agriculture, College of Animal Science and Technology, China Agricultural University, Beijing, 100193, PR China
| | - Yuxi Luo
- National Engineering Laboratory for Animal Breeding and Key Laboratory of Animal Genetics, Breeding and Reproduction, Ministry of Agriculture, College of Animal Science and Technology, China Agricultural University, Beijing, 100193, PR China
| | - Junyou Li
- Animal Resource Science Center, Graduate School of Agricultural and Life Sciences, The University of Tokyo, Ibaraki, 319-0206, Japan
| | - Yunpeng Hou
- State Key Laboratory for Agrobiotechnology, College of Biological Sciences, China Agricultural University, Beijing, 100193, PR China
| | - Shenming Zeng
- National Engineering Laboratory for Animal Breeding and Key Laboratory of Animal Genetics, Breeding and Reproduction, Ministry of Agriculture, College of Animal Science and Technology, China Agricultural University, Beijing, 100193, PR China
| | - Shien Zhu
- National Engineering Laboratory for Animal Breeding and Key Laboratory of Animal Genetics, Breeding and Reproduction, Ministry of Agriculture, College of Animal Science and Technology, China Agricultural University, Beijing, 100193, PR China
| | - Xiangwei Fu
- National Engineering Laboratory for Animal Breeding and Key Laboratory of Animal Genetics, Breeding and Reproduction, Ministry of Agriculture, College of Animal Science and Technology, China Agricultural University, Beijing, 100193, PR China.
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18
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Smieszek S, Jia P, Samuels DC, Zhao Z, Barnholtz-Sloan J, Kaur H, Letendre S, Ellis R, Franklin DR, Hulgan T, Kallianpur A, Bush WS. Nuclear-Mitochondrial interactions influence susceptibility to HIV-associated neurocognitive impairment. Mitochondrion 2019; 46:247-255. [PMID: 30026132 PMCID: PMC6336535 DOI: 10.1016/j.mito.2018.07.004] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2018] [Revised: 06/30/2018] [Accepted: 07/13/2018] [Indexed: 12/26/2022]
Abstract
HIV-associated neurocognitive impairment (NCI) is a term established to capture a wide spectrum of HIV related neurocognitive deficits ranging in severity from asymptomatic to dementia. The genetic underpinnings of this complex phenotype are incompletely understood. Mitochondrial function has long been thought to play a role in neurodegeneration, along with iron metabolism and transport. In this work, we aimed to characterize the interplay of mitochondrial DNA (mtDNA) haplogroup and nuclear genetic associations to NCI phenotypes in the CHARTER cohort, encompassing 1025 individuals of European-descent, African-descent, or admixed Hispanic. We first employed a polygenic modeling approach to investigate the global effect of previous marginally associated nuclear SNPs, and to examine how the polygenic effect of these SNPs is influenced by mtDNA haplogroups. We see evidence of a significant interaction between nuclear SNPs en masse and mtDNA haplogroups within European-descent and African-descent individuals. Subsequently, we performed an analysis of each SNP by mtDNA haplogroup, and detected significant interactions between two nuclear SNPs (rs17160128 and rs12460243) and European haplogroups. These findings, which require validation in larger cohorts, indicate a potential new role for nuclear-mitochondrial DNA interactions in susceptibility to NCI and shed light onto the pathophysiology of this neurocognitive phenotype.
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Affiliation(s)
- S Smieszek
- Department of Population and Quantitative Health Sciences, and Institute for Computational Biology, Case Western Reserve University, Cleveland, OH, United States.
| | - P Jia
- Center for Precision Health, School of Biomedical Informatics, The University of Texas Health Science Center at Houston, Houston, TX, United States
| | - D C Samuels
- Department of Molecular Physiology and Biophysics, Vanderbilt University School of Medicine, Nashville, TN, United States
| | - Z Zhao
- Center for Precision Health, School of Biomedical Informatics, The University of Texas Health Science Center at Houston, Houston, TX, United States
| | - J Barnholtz-Sloan
- Department of Population and Quantitative Health Sciences, and Institute for Computational Biology, Case Western Reserve University, Cleveland, OH, United States
| | - H Kaur
- Department of Genomic Medicine, Lerner Research Institute and Department of Medicine, Cleveland Clinic, Cleveland, OH, United States
| | - S Letendre
- Department of Medicine, University of California San Diego, San Diego, CA, United States
| | - R Ellis
- Department of Medicine, University of California San Diego, San Diego, CA, United States
| | - D R Franklin
- Department of Medicine, University of California San Diego, San Diego, CA, United States
| | - T Hulgan
- School of Medicine, Vanderbilt University, Nashville, TN, United States
| | - A Kallianpur
- Department of Genomic Medicine, Lerner Research Institute and Department of Medicine, Cleveland Clinic, Cleveland, OH, United States; Department of Molecular Medicine, Cleveland Clinic Lerner College of Medicine, Case Western Reserve University, Cleveland, OH, United States
| | - W S Bush
- Department of Population and Quantitative Health Sciences, and Institute for Computational Biology, Case Western Reserve University, Cleveland, OH, United States; Department of Genomic Medicine, Lerner Research Institute and Department of Medicine, Cleveland Clinic, Cleveland, OH, United States
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19
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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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20
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Clarke HJ. Regulation of germ cell development by intercellular signaling in the mammalian ovarian follicle. WILEY INTERDISCIPLINARY REVIEWS. DEVELOPMENTAL BIOLOGY 2018; 7:10.1002/wdev.294. [PMID: 28892263 PMCID: PMC5746469 DOI: 10.1002/wdev.294] [Citation(s) in RCA: 79] [Impact Index Per Article: 13.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/11/2017] [Revised: 07/21/2017] [Accepted: 08/02/2017] [Indexed: 12/21/2022]
Abstract
Prior to ovulation, the mammalian oocyte undergoes a process of differentiation within the ovarian follicle that confers on it the ability to give rise to an embryo. Differentiation comprises two phases-growth, during which the oocyte increases more than 100-fold in volume as it accumulates macromolecules and organelles that will sustain early embryogenesis; and meiotic maturation, during which the oocyte executes the first meiotic division and prepares for the second division. Entry of an oocyte into the growth phase appears to be triggered when the adjacent granulosa cells produce specific growth factors. As the oocyte grows, it elaborates a thick extracellular coat termed the zona pellucida. Nonetheless, cytoplasmic extensions of the adjacent granulosa cells, termed transzonal projections (TZPs), enable them to maintain contact-dependent communication with the oocyte. Through gap junctions located where the TZP tips meet the oocyte membrane, they provide the oocyte with products that sustain its metabolic activity and signals that regulate its differentiation. Conversely, the oocyte secretes diffusible growth factors that regulate proliferation and differentiation of the granulosa cells. Gap junction-permeable products of the granulosa cells prevent precocious initiation of meiotic maturation, and the gap junctions also enable oocyte maturation to begin in response to hormonal signals received by the granulosa cells. Development of the oocyte or the somatic compartment may also be regulated by extracellular vesicles newly identified in follicular fluid and at TZP tips, which could mediate intercellular transfer of macromolecules. Oocyte differentiation thus depends on continuous signaling interactions with the somatic cells of the follicle. WIREs Dev Biol 2018, 7:e294. doi: 10.1002/wdev.294 This article is categorized under: Gene Expression and Transcriptional Hierarchies > Cellular Differentiation Signaling Pathways > Cell Fate Signaling Early Embryonic Development > Gametogenesis.
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Affiliation(s)
- Hugh J Clarke
- Department of Obstetrics and Gynecology, Research Institute of the McGill University Health Centre, McGill University, Montreal, Canada
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21
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Xi G, An L, Jia Z, Tan K, Zhang J, Wang Z, Zhang C, Miao K, Wu Z, Tian J. Natriuretic peptide receptor 2 (NPR2) localized in bovine oocyte underlies a unique mechanism for C-type natriuretic peptide (CNP)-induced meiotic arrest. Theriogenology 2017; 106:198-209. [PMID: 29080478 DOI: 10.1016/j.theriogenology.2017.09.003] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2017] [Revised: 09/01/2017] [Accepted: 09/02/2017] [Indexed: 01/13/2023]
Abstract
Meiosis is of prime importance for successful gametogenesis, and insufficient maintenance of oocyte meiotic arrest compromises oocyte developmental competence. Recent studies have demonstrated that the C-type natriuretic peptide (CNP)-Natriuretic peptide receptor 2 (NPR2) pathway can inhibit mammalian oocyte meiotic resumption. In mouse and porcine, the inhibitory effect of mural granulosa cell (MGC)-derived CNP on oocyte meiotic resumption is mediated by NPR2 localized in cumulus cells (CCs) surrounding the oocytes. However, in the present study, we identified a novel mechanism for CNP-induced meiotic arrest that appears to be unique to bovine oocytes. Unlike mouse and porcine, bovine NPR2 not only localizes in CCs, but also in oocyte membranes. We also showed that CNP can directly activate intra-oocyte cGMP production via NPR2 localized in oocyte membranes, in parallel with the CC-mediated pathway. Furthermore, we demonstrated that Npr2 expression in bovine CCs and oocytes were synergistically regulated by estradiol and oocyte-derived growth factors. Finally, based on the profound inhibitory effect of CNP on meiotic resumption, we established a natural factor synchronized in vitro oocyte maturation (NFSOM) system, which can significantly improve the developmental competence of matured oocytes, thereby resulting in higher in vitro embryo production efficiency. Taken together, our study not only provides new insight into understanding the crosstalk between oocytes and follicular somatic cells in mammals, but also presents a promising strategy for improving the in vitro oocyte maturation systems of assisted reproductive technology (ART).
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Affiliation(s)
- Guangyin Xi
- National Engineering Laboratory for Animal Breeding, College of Animal Sciences and Technology, China Agricultural University, Beijing 100193, China
| | - Lei An
- National Engineering Laboratory for Animal Breeding, College of Animal Sciences and Technology, China Agricultural University, Beijing 100193, China
| | - Zhenwei Jia
- National Engineering Laboratory for Animal Breeding, College of Animal Sciences and Technology, China Agricultural University, Beijing 100193, China; College of Animal Science and Technology, Inner Mongolia University for the Nationalities, Inner Mongolia 028000, China
| | - Kun Tan
- National Engineering Laboratory for Animal Breeding, College of Animal Sciences and Technology, China Agricultural University, Beijing 100193, China
| | - Jiaxin Zhang
- Key Laboratory of Animal Genetics, Breeding and Reproduction, College of Animal Science and Technology, Inner Mongolia Agriculture University, Inner Mongolia 010018, China
| | - Zhuqing Wang
- National Engineering Laboratory for Animal Breeding, College of Animal Sciences and Technology, China Agricultural University, Beijing 100193, China
| | - Chao Zhang
- National Engineering Laboratory for Animal Breeding, College of Animal Sciences and Technology, China Agricultural University, Beijing 100193, China
| | - Kai Miao
- National Engineering Laboratory for Animal Breeding, College of Animal Sciences and Technology, China Agricultural University, Beijing 100193, China
| | - Zhonghong Wu
- National Engineering Laboratory for Animal Breeding, College of Animal Sciences and Technology, China Agricultural University, Beijing 100193, China
| | - Jianhui Tian
- National Engineering Laboratory for Animal Breeding, College of Animal Sciences and Technology, China Agricultural University, Beijing 100193, China.
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22
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Reader KL, Stanton JAL, Juengel JL. The Role of Oocyte Organelles in Determining Developmental Competence. BIOLOGY 2017; 6:biology6030035. [PMID: 28927010 PMCID: PMC5617923 DOI: 10.3390/biology6030035] [Citation(s) in RCA: 37] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/14/2017] [Revised: 09/14/2017] [Accepted: 09/14/2017] [Indexed: 02/04/2023]
Abstract
The ability of an oocyte to undergo successful cytoplasmic and nuclear maturation, fertilization and embryo development is referred to as the oocyte’s quality or developmental competence. Quality is dependent on the accumulation of organelles, metabolites and maternal RNAs during the growth and maturation of the oocyte. Various models of good and poor oocyte quality have been used to understand the essential contributors to developmental success. This review covers the current knowledge of how oocyte organelle quantity, distribution and morphology differ between good and poor quality oocytes. The models of oocyte quality are also described and their usefulness for studying the intrinsic quality of an oocyte discussed. Understanding the key critical features of cytoplasmic organelles and metabolites driving oocyte quality will lead to methods for identifying high quality oocytes and improving oocyte competence, both in vitro and in vivo.
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Affiliation(s)
- Karen L Reader
- Department of Anatomy, University of Otago, PO Box 56, Dunedin 9054, New Zealand.
| | - Jo-Ann L Stanton
- Department of Anatomy, University of Otago, PO Box 56, Dunedin 9054, New Zealand.
| | - Jennifer L Juengel
- Animal Reproduction, AgResearch Invermay Agricultural Centre, Private Bag 50034, Mosgiel 9053, New Zealand.
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23
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Hendriks WK, Colleoni S, Galli C, Paris DBBP, Colenbrander B, Roelen BAJ, Stout TAE. Maternal age and in vitro culture affect mitochondrial number and function in equine oocytes and embryos. Reprod Fertil Dev 2017; 27:957-68. [PMID: 25881326 DOI: 10.1071/rd14450] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2014] [Accepted: 03/06/2015] [Indexed: 12/12/2022] Open
Abstract
Advanced maternal age and in vitro embryo production (IVP) predispose to pregnancy loss in horses. We investigated whether mare age and IVP were associated with alterations in mitochondrial (mt) DNA copy number or function that could compromise oocyte and embryo development. Effects of mare age (<12 vs ≥12 years) on mtDNA copy number, ATP content and expression of genes involved in mitochondrial replication (mitochondrial transcription factor (TFAM), mtDNA polymerase γ subunit B (mtPOLB) and mitochondrial single-stranded DNA-binding protein (SSB)), energy production (ATP synthase-coupling factor 6, mitochondrial-like (ATP-synth_F6)) and oxygen free radical scavenging (glutathione peroxidase 3 (GPX3)) were investigated in oocytes before and after in vitro maturation (IVM), and in early embryos. Expression of TFAM, mtPOLB and ATP-synth-F6 declined after IVM (P<0.05). However, maternal age did not affect oocyte ATP content or expression of genes involved in mitochondrial replication or function. Day 7 embryos from mares ≥12 years had fewer mtDNA copies (P=0.01) and lower mtDNA:total DNA ratios (P<0.01) than embryos from younger mares, indicating an effect not simply due to lower cell number. Day 8 IVP embryos had similar mtDNA copy numbers to Day 7 in vivo embryos, but higher mtPOLB (P=0.013) and a tendency to reduced GPX3 expression (P=0.09). The lower mtDNA number in embryos from older mares may compromise development, but could be an effect rather than cause of developmental retardation. The general down-regulation of genes involved in mitochondrial replication and function after IVM may compromise resulting embryos.
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Affiliation(s)
- W Karin Hendriks
- Department of Equine Sciences, Faculty of Veterinary Medicine, Utrecht University, Yalelaan 114, 3584 CM Utrecht, The Netherlands
| | - Silvia Colleoni
- Avantea, Laboratorio di Tecnologie della Riproduzione, Via Porcellasco 7f, 26100 Cremona, Italy
| | - Cesare Galli
- Avantea, Laboratorio di Tecnologie della Riproduzione, Via Porcellasco 7f, 26100 Cremona, Italy
| | - Damien B B P Paris
- Department of Equine Sciences, Faculty of Veterinary Medicine, Utrecht University, Yalelaan 114, 3584 CM Utrecht, The Netherlands
| | - Ben Colenbrander
- Department of Equine Sciences, Faculty of Veterinary Medicine, Utrecht University, Yalelaan 114, 3584 CM Utrecht, The Netherlands
| | - Bernard A J Roelen
- Department of Equine Sciences, Faculty of Veterinary Medicine, Utrecht University, Yalelaan 114, 3584 CM Utrecht, The Netherlands
| | - Tom A E Stout
- Department of Equine Sciences, Faculty of Veterinary Medicine, Utrecht University, Yalelaan 114, 3584 CM Utrecht, The Netherlands
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24
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May-Panloup P, Boucret L, Chao de la Barca JM, Desquiret-Dumas V, Ferré-L'Hotellier V, Morinière C, Descamps P, Procaccio V, Reynier P. Ovarian ageing: the role of mitochondria in oocytes and follicles. Hum Reprod Update 2016; 22:725-743. [PMID: 27562289 DOI: 10.1093/humupd/dmw028] [Citation(s) in RCA: 320] [Impact Index Per Article: 40.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2016] [Accepted: 07/15/2016] [Indexed: 01/07/2023] Open
Abstract
BACKGROUND There is a great inter-individual variability of ovarian ageing, and almost 20% of patients consulting for infertility show signs of premature ovarian ageing. This feature, taken together with delayed childbearing in modern society, leads to the emergence of age-related ovarian dysfunction concomitantly with the desire for pregnancy. Assisted reproductive technology is frequently inefficacious in cases of ovarian ageing, thus raising the economic, medical and societal costs of the procedures. OBJECTIVE AND RATIONAL Ovarian ageing is characterized by quantitative and qualitative alteration of the ovarian oocyte reserve. Mitochondria play a central role in follicular atresia and could be the main target of the ooplasmic factors determining oocyte quality adversely affected by ageing. Indeed, the oocyte is the richest cell of the body in mitochondria and depends largely on these organelles to acquire competence for fertilization and early embryonic development. Moreover, the oocyte ensures the uniparental transmission and stability of the mitochondrial genome across the generations. This review focuses on the role played by mitochondria in ovarian ageing and on the possible consequences over the generations. SEARCH METHODS PubMed was used to search the MEDLINE database for peer-reviewed original articles and reviews concerning mitochondria and ovarian ageing, in animal and human species. Searches were performed using keywords belonging to three groups: 'mitochondria' or 'mitochondrial DNA'; 'ovarian reserve', 'oocyte', 'ovary' or 'cumulus cells'; and 'ageing' or 'ovarian ageing'. These keywords were combined with other search phrases relevant to the topic. References from these articles were used to obtain additional articles. OUTCOMES There is a close relationship, in mammalian models and humans, between mitochondria and the decline of oocyte quality with ageing. Qualitatively, ageing-related mitochondrial (mt) DNA instability, which leads to the accumulation of mtDNA mutations in the oocyte, plays a key role in the deterioration of oocyte quality in terms of competence and of the risk of transmitting mitochondrial abnormalities to the offspring. In contrast, some mtDNA haplogroups are protective against the decline of ovarian reserve. Quantitatively, mitochondrial biogenesis is crucial during oogenesis for constituting a mitochondrial pool sufficiently large to allow normal early embryonic development and to avoid the untimely activation of mitochondrial biogenesis. Ovarian ageing also seriously affects the dynamic nature of mitochondrial biogenesis in the surrounding granulosa cells that may provide interesting alternative biomarkers of oocyte quality. WIDER IMPLICATIONS A fuller understanding of the involvement of mitochondria in cases of infertility linked to ovarian ageing would contribute to a better management of the disorder in the future.
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Affiliation(s)
- Pascale May-Panloup
- Laboratoire de Biologie de la Reproduction, Centre Hospitalier Universitaire d'Angers, 49933 Angers Cedex 9, France .,PREMMi/Pôle de Recherche et d'Enseignement en Médecine Mitochondriale, Institut MITOVASC, CNRS 6214, INSERM U1083, Université d'Angers, Angers, France
| | - Lisa Boucret
- Laboratoire de Biologie de la Reproduction, Centre Hospitalier Universitaire d'Angers, 49933 Angers Cedex 9, France.,PREMMi/Pôle de Recherche et d'Enseignement en Médecine Mitochondriale, Institut MITOVASC, CNRS 6214, INSERM U1083, Université d'Angers, Angers, France
| | - Juan-Manuel Chao de la Barca
- PREMMi/Pôle de Recherche et d'Enseignement en Médecine Mitochondriale, Institut MITOVASC, CNRS 6214, INSERM U1083, Université d'Angers, Angers, France.,Département de Biochimie et Génétique, Centre Hospitalier Universitaire d'Angers, 49933 Angers Cedex 9, France
| | - Valérie Desquiret-Dumas
- PREMMi/Pôle de Recherche et d'Enseignement en Médecine Mitochondriale, Institut MITOVASC, CNRS 6214, INSERM U1083, Université d'Angers, Angers, France.,Département de Biochimie et Génétique, Centre Hospitalier Universitaire d'Angers, 49933 Angers Cedex 9, France
| | - Véronique Ferré-L'Hotellier
- Laboratoire de Biologie de la Reproduction, Centre Hospitalier Universitaire d'Angers, 49933 Angers Cedex 9, France
| | - Catherine Morinière
- Service de Gynécologie-Obstétrique, Centre Hospitalier Universitaire d'Angers, 49933 Angers Cedex 9, France
| | - Philippe Descamps
- Service de Gynécologie-Obstétrique, Centre Hospitalier Universitaire d'Angers, 49933 Angers Cedex 9, France
| | - Vincent Procaccio
- PREMMi/Pôle de Recherche et d'Enseignement en Médecine Mitochondriale, Institut MITOVASC, CNRS 6214, INSERM U1083, Université d'Angers, Angers, France.,Département de Biochimie et Génétique, Centre Hospitalier Universitaire d'Angers, 49933 Angers Cedex 9, France
| | - Pascal Reynier
- PREMMi/Pôle de Recherche et d'Enseignement en Médecine Mitochondriale, Institut MITOVASC, CNRS 6214, INSERM U1083, Université d'Angers, Angers, France.,Département de Biochimie et Génétique, Centre Hospitalier Universitaire d'Angers, 49933 Angers Cedex 9, France
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25
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Iwata H. Age-associated events in bovine oocytes and possible countermeasures. Reprod Med Biol 2016; 15:155-164. [PMID: 29259432 PMCID: PMC5715852 DOI: 10.1007/s12522-015-0233-5] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2015] [Accepted: 12/19/2015] [Indexed: 01/31/2023] Open
Abstract
Maternal aging profoundly affects oocyte quality. This has become common knowledge in industrialized countries and extensive studies addressing the causes and possible countermeasures against age-associated deterioration of oocytes suggest that mitochondrial dysfunction is a causal factor in infertility. However, almost all studies addressing age-associated events in oocytes have used mice as an animal model, and the reproductive life of mice is very short, making it difficult to study the gradual decline in fertility observed in humans. In the present review, age-associated changes in the quality and quantity of bovine oocytes and possible countermeasures related to mitochondrial quality control are introduced.
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Affiliation(s)
- Hisataka Iwata
- Tokyo University of AgricultureFunako 1737243‐034AtsugiKanagawaJapan
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26
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St John JC, Tsai TS, Cagnone GL. Mitochondrial DNA supplementation as an enhancer of female reproductive capacity. Curr Opin Obstet Gynecol 2016; 28:211-6. [DOI: 10.1097/gco.0000000000000265] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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27
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Ghaffari Novin M, Noruzinia M, Allahveisi A, Saremi A, Fadaei Fathabadi F, Mastery Farahani R, Dehghani Fard A, Pooladi A, Mazaherinezhad Fard R, Yousefian E. Comparison of mitochondrial-related transcriptional levels of TFAM, NRF1 and MT-CO1 genes in single human oocytes at various stages of the oocyte maturation. IRANIAN BIOMEDICAL JOURNAL 2015; 19:23-8. [PMID: 25605486 PMCID: PMC4322229 DOI: 10.6091/ibj.1400.2015] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Background: The aim of the current study was to assess the mRNA levels of two mitochondria-related genes, including nuclear-encoded NRF1 (nuclear respiratory factor 1), mitochondrial transcription factor A (TFAM), and mitochondrial-encoded cytochrome c oxidase subunit 1 (MT-CO1) genes in various stages of the human oocyte maturation. Methods: Oocytes were obtained from nine infertile women with male factor undergoing in vitro fertilization (IVF)/intra-cytoplasmic sperm injection protocol. Mitochondrial-related mRNA levels were performed by single-cell TaqMan real-time PCR. Results: the expression level of the target genes was low at the germinal vesicle stage (P>0.05). Although the mRNA level of NRF1gene remained stable in metaphase I, the mRNA level of TFAM and MT-CO1 increased significantly (P<0.05).In metaphase II, the expression level of all genes increased compared to metaphase I (P<0.05).Conclusion: The overexpression levels of NRF1, TFAM, and MT-CO1 genes are related to the oocyte maturation. Therefore, the current study could be used clinically to improve the success rate of IVF.
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Affiliation(s)
- Marefat Ghaffari Novin
- Dept. of Biology and Anatomical Sciences, Shahid Beheshti University of Medical Sciences, Velenjak, Tehran, Iran
| | - Mehrdad Noruzinia
- Dept. of Medical Genetics, Faculty of Medical Sciences, Tarbiat Modares University, Tehran, Iran
| | - Azra Allahveisi
- Dept. of Biology and Anatomical Sciences, Shahid Beheshti University of Medical Sciences, Velenjak, Tehran, Iran
| | - Aboutaleb Saremi
- Sarem Cell Research Center (SCRC), Sarem Women’s Hospital, Tehran, Iran
| | - Fateme Fadaei Fathabadi
- Dept. of Biology and Anatomical Sciences, Shahid Beheshti University of Medical Sciences, Velenjak, Tehran, Iran
| | - Reza Mastery Farahani
- Dept. of Biology and Anatomical Sciences, Shahid Beheshti University of Medical Sciences, Velenjak, Tehran, Iran
| | - Ali Dehghani Fard
- Sarem Cell Research Center (SCRC), Sarem Women’s Hospital, Tehran, Iran
| | - Arash Pooladi
- Sarem Cell Research Center (SCRC), Sarem Women’s Hospital, Tehran, Iran
| | | | - Elham Yousefian
- Dept. of Biology and Anatomical Sciences, Shahid Beheshti University of Medical Sciences, Velenjak, Tehran, Iran
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Edwards N, Farookhi R, Clarke HJ. Identification of a β-galactosidase transgene that provides a live-cell marker of transcriptional activity in growing oocytes and embryos. Mol Hum Reprod 2015; 21:583-93. [PMID: 25882542 PMCID: PMC4487448 DOI: 10.1093/molehr/gav020] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2014] [Revised: 03/27/2015] [Accepted: 04/09/2015] [Indexed: 01/14/2023] Open
Abstract
Identifying the events and molecular mechanisms that regulate oocyte growth has emerged as a key objective of research in human fertility, fuelled by evidence from human and animal studies indicating that disease and environmental factors can act on oocytes to affect the health of the resulting individual and by efforts to grow oocytes in vitro to enable fertility preservation of cancer survivors. Techniques that monitor the development of growing oocytes would be valuable tools to assess the progression of growth under different conditions. Most methods used to assess oocytes grown in vitro are indirect, however, relying on characteristics of the somatic compartment of the follicle, or compromise the oocyte, preventing its subsequent culture or fertilization. We investigated the utility of T-cell factor/lymphoid enhancer-binding factor (TCF/Lef)-LacZ transgene expression as a predictor of global transcriptional activity in oocytes and early embryos. Using a fluorescent β-galactosidase substrate combined with live-cell imaging, we show that TCF/Lef-LacZ transgene expression is detectable in growing oocytes, lost in fully grown oocytes and resumes in late two-cell embryos. Transgene expression is likely regulated by a Wnt-independent mechanism. Using chromatin analysis, LacZ expression and methods to monitor and inhibit transcription, we show that TCF/Lef-LacZ expression mirrors transcriptional activity in oocytes and preimplantation embryos. Oocytes and preimplantation embryos that undergo live-cell imaging for TCF/Lef-LacZ expression are able to continue development in vitro. TCF/Lef-LacZ reporter expression in living oocytes and early embryos is thus a sensitive and faithful marker of transcriptional activity that can be used to monitor and optimize conditions for oocyte growth.
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Affiliation(s)
- Nicole Edwards
- Department of Obstetrics and Gynecology, McGill University, Montreal, QC, Canada Department of Physiology, McGill University, Montreal, QC, Canada Research Institute of the McGill University Health Centre, Montreal, QC, Canada
| | - Riaz Farookhi
- Department of Obstetrics and Gynecology, McGill University, Montreal, QC, Canada Department of Physiology, McGill University, Montreal, QC, Canada Research Institute of the McGill University Health Centre, Montreal, QC, Canada Department of Experimental Medicine, McGill University, Montreal, QC, Canada
| | - Hugh J Clarke
- Department of Obstetrics and Gynecology, McGill University, Montreal, QC, Canada Research Institute of the McGill University Health Centre, Montreal, QC, Canada Department of Experimental Medicine, McGill University, Montreal, QC, Canada Department of Biology, McGill University, Montreal, QC, Canada
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Boucret L, Chao de la Barca JM, Morinière C, Desquiret V, Ferré-L'Hôtellier V, Descamps P, Marcaillou C, Reynier P, Procaccio V, May-Panloup P. Relationship between diminished ovarian reserve and mitochondrial biogenesis in cumulus cells. Hum Reprod 2015; 30:1653-64. [PMID: 25994667 DOI: 10.1093/humrep/dev114] [Citation(s) in RCA: 99] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2014] [Accepted: 04/23/2015] [Indexed: 01/30/2023] Open
Abstract
STUDY QUESTION What part do mitochondria play in cases of diminished ovarian reserve (DOR)? SUMMARY ANSWER Mitochondrial biogenesis in cumulus cells may be linked with impaired oocyte competence in patients with DOR. WHAT IS KNOWN ALREADY DOR, one of the causes of infertility even in young women, is characterized by the depletion of the ovarian pool associated with a decline in oocyte competence. Mitochondria, which play a role in oocyte quality, could be involved in the pathogenesis of DOR. The study of cumulus cells offers an interesting non-invasive approach for evaluating oocyte quality and the metabolic processes on which it depends. If mitochondrial dysfunction is involved in DOR, it is likely to have an impact on the functioning of cumulus cells. STUDY DESIGN, SIZE, DURATION This is an observational study of 74 immature oocyte-cumulus complexes retrieved from 47 women undergoing in vitro fertilization with intracytoplasmic sperm injection at the University Hospital of Angers, France, from March 2013 to March 2014. The women were divided into two groups: one group included 26 women with DOR, and the other, which included 21 women with a normal ovarian reserve (NOR), served as a control group. PARTICIPANTS/MATERIALS, SETTINGS, METHODS The oocyte mitochondrial content and the average mitochondrial content of the cumulus cells were assessed by mitochondrial (mt)DNA quantification using a quantitative real-time PCR technique. Microfluidic-based quantitative RT-PCR assays were used to quantify the expression of 13 genes involved in mitochondrial functions such as apoptosis and antioxidant activity or in mitochondrial biogenesis. We used orthogonal partial least-squares discriminant analysis (OPLS-DA) to distinguish between the DOR group and the NOR group of patients, and an OPLS model to predict the value of the oocyte mtDNA content that could be used as a critical marker of oocyte quality. MAIN RESULTS AND THE ROLE OF CHANCE The OPLS-DA model showed a good predictive capability (Q2 = 0.543). Using the variable importance in projection (VIP) metric we found three mitochondrial variables distinguishing the DOR group from the NOR group of patients, i.e. the oocyte mtDNA content (VIP = 0.92), the cumulus cell mtDNA content (VIP = 0.95) and the expression in cumulus cells of peroxisome proliferator-activated receptor γ coactivator 1 alpha (PPARGC-1A) (VIP = 1.10), all of which were lower in the DOR group than in the NOR group of patients. The OPLS model was able to satisfactorily predict the oocyte mtDNA content in only the NOR group of patients (Q2 = 0.506). We found four new variables positively linked to the oocyte mitochondrial mass, i.e. the cumulus cell mtDNA content (VIP = 1.19), and the expression in cumulus cells of three factors of mitochondrial biogenesis: polymerase gamma (POLG) (VIP = 2.13), optic atrophy 1 (OPA1) (VIP = 1.89) and the transcription factor associated with mitochondria (TFAM) (VIP = 1.32). LIMITATIONS, REASONS OF CAUTION This is a descriptive study. Because of ethical concerns in human clinical practice, this study has been performed only on immature oocytes and corresponding cumulus cells, which are usually discarded during in vitro fertilization procedures. WIDER IMPLICATIONS OF THE FINDINGS Cumulus cells may govern mitochondrial biogenesis, creating an adequate oocyte mitochondrial pool to promote embryonic development. The alteration of this process in patients with DOR may account for the impairment of oocyte quality. This suggests that some mitochondrial characteristics of cumulus cells may serve as indicators of oocyte competence and that oocyte quality may be improved by products enhancing mitochondrial biogenesis. STUDY FUNDING/COMPETING INTERESTS This work was supported by a grant from the University Hospital of Angers, France: 'Appel d'offre interne à la recherche 2014'. TRIAL REGISTRATION NUMBER N/A.
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Affiliation(s)
- L Boucret
- Laboratoire de Biologie de la Reproduction, Centre Hospitalier Universitaire d'Angers, 49933 Angers Cedex 9, France
| | - J M Chao de la Barca
- Département de Biochimie et Génétique, Centre Hospitalier Universitaire d'Angers, 49933 Angers Cedex 9, France
| | - C Morinière
- Service de Gynécologie-Obstétrique, Centre Hospitalier Universitaire d'Angers, 49933 Angers Cedex 9, France
| | - V Desquiret
- Département de Biochimie et Génétique, Centre Hospitalier Universitaire d'Angers, 49933 Angers Cedex 9, France UMR CNRS 6214-INSERM U1083, 49933 Angers Cedex 9, France
| | - V Ferré-L'Hôtellier
- Laboratoire de Biologie de la Reproduction, Centre Hospitalier Universitaire d'Angers, 49933 Angers Cedex 9, France
| | - P Descamps
- Service de Gynécologie-Obstétrique, Centre Hospitalier Universitaire d'Angers, 49933 Angers Cedex 9, France
| | | | - P Reynier
- Département de Biochimie et Génétique, Centre Hospitalier Universitaire d'Angers, 49933 Angers Cedex 9, France UMR CNRS 6214-INSERM U1083, 49933 Angers Cedex 9, France
| | - V Procaccio
- Département de Biochimie et Génétique, Centre Hospitalier Universitaire d'Angers, 49933 Angers Cedex 9, France UMR CNRS 6214-INSERM U1083, 49933 Angers Cedex 9, France
| | - P May-Panloup
- Laboratoire de Biologie de la Reproduction, Centre Hospitalier Universitaire d'Angers, 49933 Angers Cedex 9, France UMR CNRS 6214-INSERM U1083, 49933 Angers Cedex 9, France
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Itami N, Shiratsuki S, Shirasuna K, Kuwayama T, Iwata H. Mitochondrial biogenesis and degradation are induced by CCCP treatment of porcine oocytes. Reproduction 2015; 150:97-104. [PMID: 25995440 DOI: 10.1530/rep-15-0037] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2015] [Accepted: 05/20/2015] [Indexed: 01/09/2023]
Abstract
In this study, we investigated the mitochondrial quality control system in porcine oocytes during meiotic maturation. Cumulus cell oocyte complexes (COCs) collected from gilt ovaries were treated with 10 μM carbonyl cyanide-m-chlorophenylhydrazone (CCCP; a mitochondrial uncoupler) for 2 h. The CCCP treatment was found to significantly reduce ATP content, increase the amount of phosphorylated AMP-activated protein kinase and elevate reactive oxygen species levels in oocytes. When the CCCP-treated COCs were cultured further for 44 h in maturation medium, the ATP levels were restored and the parthenogenetic developmental rate of oocytes to the blastocyst stage was comparable with that of untreated COCs. To examine the effects of CCCP treatment of oocytes on the kinetics of mitochondrial DNA copy number (Mt number), COCs treated with 0 or 10 μM CCCP were cultured for 44 h, after which the Mt number was determined by RT-PCR. CCCP treatment was found to increase the Mt number in the modified maturation medium in which mitochondrial degradation was inhibited by MG132, whereas CCCP treatment did not affect the Mt number in the maturation medium lacking MG132. The relative gene expression of TFAM was furthermore shown to be significantly higher in CCCP-treated oocytes than in untreated oocytes. Taken together, the finding presented here suggest that when the mitochondria are injured, mitochondrial biogenesis and degradation are induced, and that these processes may contribute to the recuperation of oocytes.
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Affiliation(s)
- N Itami
- Department of Animal ReproductionTokyo University of Agriculture, Funako 1737, Atsugi, Kanagawa, 243-0034, Japan
| | - S Shiratsuki
- Department of Animal ReproductionTokyo University of Agriculture, Funako 1737, Atsugi, Kanagawa, 243-0034, Japan
| | - K Shirasuna
- Department of Animal ReproductionTokyo University of Agriculture, Funako 1737, Atsugi, Kanagawa, 243-0034, Japan
| | - T Kuwayama
- Department of Animal ReproductionTokyo University of Agriculture, Funako 1737, Atsugi, Kanagawa, 243-0034, Japan
| | - H Iwata
- Department of Animal ReproductionTokyo University of Agriculture, Funako 1737, Atsugi, Kanagawa, 243-0034, Japan
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Sugiyama M, Kawahara-Miki R, Kawana H, Shirasuna K, Kuwayama T, Iwata H. Resveratrol-induced mitochondrial synthesis and autophagy in oocytes derived from early antral follicles of aged cows. J Reprod Dev 2015; 61:251-9. [PMID: 25866375 PMCID: PMC4547982 DOI: 10.1262/jrd.2015-001] [Citation(s) in RCA: 52] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023] Open
Abstract
Mitochondrial numbers increase during oocyte growth. In this study, we collected oocytes and granulosa cell complexes (OGCs) from early antral follicles (EAFs) of aged cows (> 120 months of age) and examined the effects of resveratrol on mitochondrial generation, degradation, and quality in oocytes grown in vitro. We also examined the effects of resveratrol on gene expression of the granulosa cells. Resveratrol (20 µM) enhanced the expression of SIRT1 and induced autophagy in both granulosa cells and oocytes derived from aged cows. Culturing the OGCs with resveratrol increased mitochondrial DNA copy numbers in oocytes grown in vitro. Furthermore, resveratrol increased the ATP content in oocytes and improved the developmental ability of the oocytes to the blastocyst stage. Gene expression profiles in granulosa cells, as evaluated by next-generation sequencing technology, revealed that resveratrol enhanced the expression of EIF2-related
genes but downregulated the expression of mammalian target of rapamycin (mTOR)-, inflammation-, and cholesterol homeostasis-related genes in granulosa cells. In conclusion, resveratrol affected both oocytes and granulosa cells derived from aged cows and improved the quality of oocytes grown in vitro through upregulation of mitochondrial biogenesis and degradation in growing oocytes and conditioning of granulosa cells.
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Affiliation(s)
- Miyako Sugiyama
- Department of Animal Science, Tokyo University of Agriculture, Kanagawa 243-0034, Japan
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Reader KL, Cox NR, Stanton JAL, Juengel JL. Effects of acetyl-L-carnitine on lamb oocyte blastocyst rate, ultrastructure, and mitochondrial DNA copy number. Theriogenology 2015; 83:1484-92. [PMID: 25748246 DOI: 10.1016/j.theriogenology.2015.01.028] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2014] [Revised: 01/20/2015] [Accepted: 01/24/2015] [Indexed: 01/01/2023]
Abstract
Viable lambs can be produced after transfer of in vitro-derived embryos from oocytes harvested from prepubertal lambs. However, this occurs at a much lower efficiency than from adult ewe oocyte donors. The reduced competence of prepubertal oocytes is believed to be due, at least in part, to deficiencies in cytoplasmic maturation. Differences in the cytoplasmic ultrastructure between prepubertal and adult oocytes have been described in the sheep, pig, and cow. Prepubertal lamb oocytes have been shown to have a different distribution of mitochondria and lipid droplets, and less mitochondria and storage vesicles than their adult counterparts. L-carnitine plays a role in supplying energy to the cell by transporting long-chain fatty acids into mitochondria for β-oxidation to produce ATP. Both L-carnitine and its derivative acetyl-L-carnitine have been reported to increase the blastocyst rate of oocytes from mice, cows, and pigs, treated during IVM. L-carnitine has also been shown to increase mitochondrial biogenesis in adipose cells. Therefore, the aims of this study were to determine if treatment of oocytes from prepubertal lambs with acetyl-L-carnitine during IVM could increase the blastocyst rate and alter mitochondria, vesicle, or lipid droplet number, volume, or distribution. The blastocyst rate was doubled in prepubertal lamb oocytes treated with acetyl-L-carnitine when compared to untreated oocytes (10.0% and 4.6%, respectively; P = 0.028). Light microscopy, scanning electron microscopy, and stereology techniques were used to quantify organelles in untreated and acetyl-L-carnitine-treated lamb oocytes, and quantitative polymerase chain reaction methods were used to measure the mitochondrial DNA copy number. There were no differences in mitochondrial volume, number, or mitochondrial DNA copy number. Acetyl-L-carnitine treatment increased the cytoplasmic volume (P = 0.015) of the oocytes, and there were trends toward an increase in the vesicle volume (P = 0.089) and an altered distribution of lipid droplets (P = 0.076). In conclusion, acetyl-L-carnitine can be used to increase the in vitro blastocyst rate of juvenile oocytes and therefore to improve juvenile in vitro embryo transfer methods. These methods can be used for livestock improvement by increasing the rate of genetic gain. Further work is required to identify the contents of the vesicles and confirm the mode of action of acetyl-L-carnitine in improving oocyte competence.
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Affiliation(s)
- Karen L Reader
- Department of Anatomy, University of Otago, Dunedin, New Zealand; Animal Productivity, AgResearch, Invermay Agricultural Centre, Mosgiel, New Zealand.
| | - Neil R Cox
- Bioinformatics and Statistics, AgResearch, Invermay Agricultural Centre, Mosgiel, New Zealand
| | - Jo-Ann L Stanton
- Department of Anatomy, University of Otago, Dunedin, New Zealand
| | - Jennifer L Juengel
- Animal Productivity, AgResearch, Invermay Agricultural Centre, Mosgiel, New Zealand
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Lee SK, Zhao MH, Zheng Z, Kwon JW, Liang S, Kim SH, Kim NH, Cui XS. Polymerase subunit gamma 2 affects porcine oocyte maturation and subsequent embryonic development. Theriogenology 2014; 83:121-30. [PMID: 25308052 DOI: 10.1016/j.theriogenology.2014.08.019] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2014] [Revised: 07/16/2014] [Accepted: 08/31/2014] [Indexed: 01/30/2023]
Abstract
Deoxyribonucleic acid polymerase subunit gamma (POLG) is an enzyme encoded by the mitochondrial Polg gene. Polymerase (DNA directed), gamma 2, accessory subunit, also known as POLG2, is involved in mitochondrial replication. In the present study, we examined the role of Polg2 in the maturation of porcine oocytes. After Polg2 knockdown, the mitochondrial DNA copy number was significantly (P < 0.05) lower than that in the control group. However, there was no decrease in mitochondrial membrane potential. The decrease in mitochondrial DNA copy number led to reductions in adenosine-5'-triphosphate content (P < 0.05) and the maturation rate (P < 0.05) of oocytes. Furthermore, in the Polg2-knockdown group, maturation-promoting factor activity was decreased (P < 0.05) and the percentage of oocytes displaying abnormal actin filaments and microtubules was significantly increased (P < 0.05). This likely led to the reduced development rate and number of cells per blastocyst in this group (P < 0.05). In conclusion, Polg2 seems to be critical for mitochondrial replication and regulation of adenosine-5'-triphosphate content and affects porcine oocyte maturation and subsequent embryonic development.
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Affiliation(s)
- Seul-Ki Lee
- Department of Animal Sciences, Chungbuk National University, Cheongju, South Korea; Brain Korea 21 Center for Bio-Resource Development, Cheongju, South Korea
| | - Ming-Hui Zhao
- Department of Animal Sciences, Chungbuk National University, Cheongju, South Korea; Brain Korea 21 Center for Bio-Resource Development, Cheongju, South Korea
| | - Zhong Zheng
- Department of Animal Sciences, Chungbuk National University, Cheongju, South Korea; Brain Korea 21 Center for Bio-Resource Development, Cheongju, South Korea
| | - Jung-Woo Kwon
- Department of Animal Sciences, Chungbuk National University, Cheongju, South Korea; Brain Korea 21 Center for Bio-Resource Development, Cheongju, South Korea
| | - Shuang Liang
- Department of Animal Sciences, Chungbuk National University, Cheongju, South Korea; Brain Korea 21 Center for Bio-Resource Development, Cheongju, South Korea
| | - Seon-Hyang Kim
- Department of Animal Sciences, Chungbuk National University, Cheongju, South Korea; Brain Korea 21 Center for Bio-Resource Development, Cheongju, South Korea
| | - Nam-Hyung Kim
- Department of Animal Sciences, Chungbuk National University, Cheongju, South Korea; Brain Korea 21 Center for Bio-Resource Development, Cheongju, South Korea
| | - Xiang-Shun Cui
- Department of Animal Sciences, Chungbuk National University, Cheongju, South Korea; Brain Korea 21 Center for Bio-Resource Development, Cheongju, South Korea.
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Salilew-Wondim D, Tesfaye D, Hoelker M, Schellander K. Embryo transcriptome response to environmental factors: Implication for its survival under suboptimal conditions. Anim Reprod Sci 2014; 149:30-8. [DOI: 10.1016/j.anireprosci.2014.05.015] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2014] [Revised: 05/22/2014] [Accepted: 05/26/2014] [Indexed: 10/25/2022]
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Kianian PMA, Kianian SF. Mitochondrial dynamics and the cell cycle. FRONTIERS IN PLANT SCIENCE 2014; 5:222. [PMID: 24904617 PMCID: PMC4035010 DOI: 10.3389/fpls.2014.00222] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/06/2014] [Accepted: 05/04/2014] [Indexed: 05/25/2023]
Abstract
Nuclear-mitochondrial (NM) communication impacts many aspects of plant development including vigor, sterility, and viability. Dynamic changes in mitochondrial number, shape, size, and cellular location takes place during the cell cycle possibly impacting the process itself and leading to distribution of this organelle into daughter cells. The genes that underlie these changes are beginning to be identified in model plants such as Arabidopsis. In animals disruption of the drp1 gene, a homolog to the plant drp3A and drp3B, delays mitochondrial division. This mutation results in increased aneuploidy due to chromosome mis-segregation. It remains to be discovered if a similar outcome is observed in plants. Alloplasmic lines provide an opportunity to understand the communication between the cytoplasmic organelles and the nucleus. Examples of studies in these lines, especially from the extensive collection in wheat, point to the role of mitochondria in chromosome movement, pollen fertility and other aspects of development.
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Affiliation(s)
- Penny M. A. Kianian
- Department of Horticultural Science, University of MinnesotaSt. Paul, MN, USA
| | - Shahryar F. Kianian
- Cereal Disease Laboratory, United States Department of Agriculture – Agricultural Research ServiceSt. Paul, MN, USA
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Grindler NM, Moley KH. Maternal obesity, infertility and mitochondrial dysfunction: potential mechanisms emerging from mouse model systems. Mol Hum Reprod 2013; 19:486-94. [PMID: 23612738 DOI: 10.1093/molehr/gat026] [Citation(s) in RCA: 90] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023] Open
Abstract
Obesity is associated with ovulatory disorders, decreased rates of conception, infertility, early pregnancy loss and congenital abnormalities. Poor oocyte quality and reduced IVF success have also been reported in obese women. Recent attempts to understand the mechanism by which these defects occur have focused on mitochondria, essential organelles that are critical for oocyte maturation and subsequent embryo development. The oocyte relies on maternally supplied mitochondria until the resumption of mitochondrial replication in the peri-implantation period. Here we review current literature addressing the roles of mitochondria in oocyte function and how mitochondrial dysfunction can lead to fertility problems. The relationship between mitochondrial dysfunction and oocyte function is evaluated by examining the following examples of environmental exposures: tobacco smoke, aging, caloric restriction and hyperglycemia. Finally, we present new data from a mouse model of obesity that has demonstrated that oocyte mitochondria play a key role in obesity-associated reproductive disorders.
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Affiliation(s)
- Natalia M Grindler
- Department of Obstetrics and Gynecology, Washington University School of Medicine, 660 South Euclid Avenue, St. Louis, MO 63110, USA
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