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Suzuki R, Tan X, Szymanska KJ, Kubikova N, Perez CA, Wells D, Oktay KH. The role of declining ataxia-telangiectasia-mutated (ATM) function in oocyte aging. Cell Death Discov 2024; 10:302. [PMID: 38914566 PMCID: PMC11196715 DOI: 10.1038/s41420-024-02041-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2024] [Revised: 05/04/2024] [Accepted: 05/22/2024] [Indexed: 06/26/2024] Open
Abstract
Despite the advances in the understanding of reproductive physiology, the mechanisms underlying ovarian aging are still not deciphered. Recent research found an association between impaired ATM-mediated DNA double-strand break (DSB) repair mechanisms and oocyte aging. However, direct evidence connecting ATM-mediated pathway function decline and impaired oocyte quality is lacking. The objective of this study was to determine the role of ATM-mediated DNA DSB repair in the maintenance of oocyte quality in a mouse oocyte knockdown model. Gene interference, in vitro culture, parthenogenesis coupled with genotoxicity assay approaches, as well as molecular cytogenetic analyses based upon next-generation sequencing, were used to test the hypothesis that intact ATM function is critical in the maintenance of oocyte quality. We found that ATM knockdown impaired oocyte quality, resulting in poor embryo development. ATM knockdown significantly lowered or blocked the progression of meiosis in vitro, as well as retarding and reducing embryo cleavage after parthenogenesis. After ATM knockdown, all embryos were of poor quality, and none reached the blastocyst stage. ATM knockdown was also associated with an increased aneuploidy rate compared to controls. Finally, ATM knockdown increased the sensitivity of the oocytes to a genotoxic active metabolite of cyclophosphamide, with increased formation of DNA DSBs, reduced survival, and earlier apoptotic death compared to controls. These findings suggest a key role for ATM in maintaining oocyte quality and resistance to genotoxic stress, and that the previously observed age-induced decline in oocyte ATM function may be a prime factor contributing to oocyte aging.
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Affiliation(s)
- Reiko Suzuki
- Department of Obstetrics, Gynecology and Reproductive Sciences, Yale University School of Medicine, New Haven, USA
| | - Xiujuan Tan
- Department of Obstetrics, Gynecology and Reproductive Sciences, Yale University School of Medicine, New Haven, USA
| | - Katarzyna J Szymanska
- Department of Obstetrics, Gynecology and Reproductive Sciences, Yale University School of Medicine, New Haven, USA
| | - Nada Kubikova
- Nuffield Department of Women's and Reproductive Health, University of Oxford, Oxford, United Kingdom
| | - Columba Avila Perez
- Nuffield Department of Women's and Reproductive Health, University of Oxford, Oxford, United Kingdom
| | - Dagan Wells
- Nuffield Department of Women's and Reproductive Health, University of Oxford, Oxford, United Kingdom
- Juno Genetics, Oxford, United Kingdom
| | - Kutluk H Oktay
- Department of Obstetrics, Gynecology and Reproductive Sciences, Yale University School of Medicine, New Haven, USA.
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2
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Liu K, Zhang L, Xu X, Xiao L, Wen J, Zhang H, Zhao S, Qiao D, Bai J, Liu Y. The Antioxidant Salidroside Ameliorates the Quality of Postovulatory Aged Oocyte and Embryo Development in Mice. Antioxidants (Basel) 2024; 13:248. [PMID: 38397846 PMCID: PMC10886307 DOI: 10.3390/antiox13020248] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2024] [Revised: 02/06/2024] [Accepted: 02/13/2024] [Indexed: 02/25/2024] Open
Abstract
Postovulatory aging is known to impair the oocyte quality and embryo development due to oxidative stress in many different animal models, which reduces the success rate or pregnancy rate in human assisted reproductive technology (ART) and livestock timed artificial insemination (TAI), respectively. Salidroside (SAL), a phenylpropanoid glycoside, has been shown to exert antioxidant and antitumor effects. This study aimed to investigate whether SAL supplementation could delay the postovulatory oocyte aging process by alleviating oxidative stress. Here, we show that SAL supplementation decreases the malformation rate and recovers mitochondrial dysfunction including mitochondrial distribution, mitochondrial membrane potential (ΔΨ) and ATP content in aged oocytes. In addition, SAL treatment alleviates postovulatory aging-caused oxidative stress such as higher reactive oxygen species (ROS) level, lower glutathione (GSH) content and a reduced expression of antioxidant-related genes. Moreover, the cytoplasmic calcium ([Ca2+]c) and mitochondrial calcium ([Ca2+]mt) of SAL-treated oocytes return to normal levels. Notably, SAL suppresses the aging-induced DNA damage, early apoptosis and improves spindle assembly in aged oocytes, ultimately elevating the embryo developmental rates and embryo quality. Finally, the RNA-seq and confirmatory experience showed that SAL promotes protective autophagy in aged oocytes by activating the MAPK pathway. Taken together, our research suggests that supplementing SAL is an effective and feasible method for preventing postovulatory aging and preserving the oocyte quality, which potentially contributes to improving the successful rate of ART or TAI.
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Affiliation(s)
- Kexiong Liu
- Institute of Animal Husbandry and Veterinary Medicine, Beijing Academy of Agriculture and Forestry Sciences, Beijing 100097, China; (K.L.)
| | - Luyao Zhang
- Key Laboratory of Adaptation and Evolution of Plateau Biota, Northwest Institute of Plateau Biology, Chinese Academy of Sciences, Xining 810001, China;
| | - Xiaoling Xu
- Institute of Animal Husbandry and Veterinary Medicine, Beijing Academy of Agriculture and Forestry Sciences, Beijing 100097, China; (K.L.)
| | - Linli Xiao
- Institute of Animal Husbandry and Veterinary Medicine, Beijing Academy of Agriculture and Forestry Sciences, Beijing 100097, China; (K.L.)
| | - Junhui Wen
- Institute of Animal Husbandry and Veterinary Medicine, Beijing Academy of Agriculture and Forestry Sciences, Beijing 100097, China; (K.L.)
| | - Hanbing Zhang
- Institute of Animal Husbandry and Veterinary Medicine, Beijing Academy of Agriculture and Forestry Sciences, Beijing 100097, China; (K.L.)
| | - Shuxin Zhao
- Institute of Animal Husbandry and Veterinary Medicine, Beijing Academy of Agriculture and Forestry Sciences, Beijing 100097, China; (K.L.)
| | - Dongliang Qiao
- Development Center of Science and Technology, Ministry of Agriculture and Rural Affairs, Beijing 100176, China
| | - Jiahua Bai
- Institute of Animal Husbandry and Veterinary Medicine, Beijing Academy of Agriculture and Forestry Sciences, Beijing 100097, China; (K.L.)
| | - Yan Liu
- Institute of Animal Husbandry and Veterinary Medicine, Beijing Academy of Agriculture and Forestry Sciences, Beijing 100097, China; (K.L.)
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Chromosome Segregation in the Oocyte: What Goes Wrong during Aging. Int J Mol Sci 2022; 23:ijms23052880. [PMID: 35270022 PMCID: PMC8911062 DOI: 10.3390/ijms23052880] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2022] [Revised: 02/22/2022] [Accepted: 03/05/2022] [Indexed: 12/13/2022] Open
Abstract
Human female fertility and reproductive lifespan decrease significantly with age, resulting in an extended post-reproductive period. The central dogma in human female reproduction contains two important aspects. One is the pool of oocytes in the human ovary (the ovarian reserve; approximately 106 at birth), which diminishes throughout life until menopause around the age of 50 (approximately 103 oocytes) in women. The second is the quality of oocytes, including the correctness of meiotic divisions, among other factors. Notably, the increased rate of sub- and infertility, aneuploidy, miscarriages, and birth defects are associated with advanced maternal age, especially in women above 35 years of age. This postponement is also relevant for human evolution; decades ago, the female aging-related fertility drop was not as important as it is today because women were having their children at a younger age. Spindle assembly is crucial for chromosome segregation during each cell division and oocyte maturation, making it an important event for euploidy. Consequently, aberrations in this segregation process, especially during the first meiotic division in human eggs, can lead to implantation failure or spontaneous abortion. Today, human reproductive medicine is also facing a high prevalence of aneuploidy, even in young females. However, the shift in the reproductive phase of humans and the strong increase in errors make the problem much more dramatic at later stages of the female reproductive phase. Aneuploidy in human eggs could be the result of the non-disjunction of entire chromosomes or sister chromatids during oocyte meiosis, but partial or segmental aneuploidies are also relevant. In this review, we intend to describe the relevance of the spindle apparatus during oocyte maturation for proper chromosome segregation in the context of maternal aging and the female reproductive lifespan.
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Deng SZ, Xu CL, Xu ZF, Zhou LY, Xie SJ, Wei KN, Jin YC, Zeng ZC, Yang XJ, Tan SH, Wang HL. Perfluorodecanoic acid induces meiotic defects and deterioration of mice oocytes in vitro. Toxicology 2021; 460:152884. [PMID: 34358620 DOI: 10.1016/j.tox.2021.152884] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2021] [Revised: 07/19/2021] [Accepted: 07/30/2021] [Indexed: 11/29/2022]
Abstract
Perfluorodecanoic acid (PFDA) is a member of the perfluoroalkyl substances, which are toxic to organic functions. Recently, it has been found in follicular fluid, seriously interfering with reproduction. Follicular fluid provides the oocyte with necessary resources during the process of oocytes maturation. However, the effects of PFDA on the oocyte need investigation. Our study evaluated the impacts of PFDA on the meiosis and development potential of mouse oocytes by exposing oocytes to PFDA in vitro at 350, 400, and 450 μM concentrations. The results showed that exposure to PFDA resulted in the first meiotic prophase arrest by obstructing the function of the maturation-promoting factor. It also induced the dysfunction of the spindle assembly checkpoint, expedited the progression of the first meiotic process, and increased the risk of aneuploidy. The oocytes treated with PFDA had a broken cytoskeleton which also contributed to meiotic maturation failure. Besides, PFDA exposure caused mitochondria defections, increased the reactive oxygen species level in oocytes, and consequently induced oocyte apoptosis. Moreover, PFDA produced epigenetic modifications in oocytes and increased the frequency of mature oocytes with declined development potential. In summary, our data indicated that PFDA disturbs the meiotic process and induces oocyte quality deterioration.
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Affiliation(s)
- Shu-Zi Deng
- College of Life Science, Hunan University of Science and Technology, Xiangtan, Hunan, 411201, China; Department of Basic Medicine, School of Medicine, Xiamen University, Xiamen, Fujian, 361102, China
| | - Chang-Long Xu
- The Reproductive Medical Center of Nanning Second People's Hospital, Nanning, Guangxi, 530031, China
| | - Zhong-Feng Xu
- Department of Basic Medicine, School of Medicine, Xiamen University, Xiamen, Fujian, 361102, China; College of Animal Science and Technology, Northeast Agricultural University, Harbin, 150030, China
| | - Li-Ying Zhou
- Department of Basic Medicine, School of Medicine, Xiamen University, Xiamen, Fujian, 361102, China
| | - Shu-Juan Xie
- Department of Basic Medicine, School of Medicine, Xiamen University, Xiamen, Fujian, 361102, China
| | - Kang-Na Wei
- Department of Basic Medicine, School of Medicine, Xiamen University, Xiamen, Fujian, 361102, China; Department of Gynaecology and Obstetrics, The Affiliated Xiang-An Hospital of Xiamen University, Xiamen, Fujian, 361102, China
| | - Yuan-Chang Jin
- College of Biology and Agriculture (College of Food Science and Technology), Zunyi Normal College, Zunyi, 563006, China
| | - Zhao-Cheng Zeng
- Department of Basic Medicine, School of Medicine, Xiamen University, Xiamen, Fujian, 361102, China
| | - Xiang-Jun Yang
- Department of Gynaecology and Obstetrics, The Affiliated Zhong-Shan Hospital of Xiamen University, Xiamen, Fujian, 361004, China
| | - Shu-Hua Tan
- College of Life Science, Hunan University of Science and Technology, Xiangtan, Hunan, 411201, China.
| | - Hai-Long Wang
- Department of Basic Medicine, School of Medicine, Xiamen University, Xiamen, Fujian, 361102, China.
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Xue Q, Li G, Cao Y, Yin J, Zhu Y, Zhang H, Zhou C, Shen H, Dou X, Su Y, Wang K, Zou J, Han W. Identification of genes involved in inbreeding depression of reproduction in Langshan chickens. Anim Biosci 2020; 34:975-984. [PMID: 33152217 PMCID: PMC8100482 DOI: 10.5713/ajas.20.0248] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2020] [Accepted: 10/05/2020] [Indexed: 12/31/2022] Open
Abstract
Objective Inbreeding depression of reproduction is a major concern in the conservation of native chicken genetic resources. Here, based on the successful development of strongly inbred (Sinb) and weakly inbred (Winb) Langshan chickens, we aimed to evaluate inbreeding effects on reproductive traits and identify candidate genes involved in inbreeding depression of reproduction in Langshan chickens. Methods A two-sample t-test was performed to estimate the differences in phenotypic values of reproductive traits between Sinb and Winb chicken groups. Three healthy chickens with reproductive trait values around the group mean values were selected from each of the groups. Differences in ovarian and hypothalamus transcriptomes between the two groups of chickens were analyzed by RNA sequencing (RNA-Seq). Results The Sinb chicken group showed an obvious inbreeding depression in reproduction, especially for traits of age at the first egg and egg number at 300 days (p<0.01). Furthermore, 68 and 618 differentially expressed genes (DEGs) were obtained in the hypothalamus and ovary between the two chicken groups, respectively. In the hypothalamus, DEGs were mainly enriched in the pathways related to vitamin metabolism, signal transduction and development of the reproductive system, such as the riboflavin metabolism, Wnt signaling pathway, extracellular matrix-receptor interaction and focal adhesion pathways, including stimulated by retinoic acid 6, serpin family F member 1, secreted frizzled related protein 2, Wnt family member 6, and frizzled class receptor 4 genes. In the ovary, DEGs were significantly enriched in pathways associated with basic metabolism, including amino acid metabolism, oxidative phosphorylation, and glycosaminoglycan degradation. A series of key DEGs involved in folate biosynthesis (gamma-glutamyl hydrolase, guanosine triphosphate cyclohydrolase 1), oocyte meiosis and ovarian function (cytoplasmic polyadenylation element binding protein 1, structural maintenance of chromosomes 1B, and speedy/RINGO cell cycle regulator family member A), spermatogenesis and male fertility (prostaglandin D2 synthase 21 kDa), Mov10 RISC complex RNA helicase like 1, and deuterosome assembly protein 1) were identified, and these may play important roles in inbreeding depression in reproduction. Conclusion The results improve our understanding of the regulatory mechanisms underlying inbreeding depression in chicken reproduction and provide a theoretical basis for the conservation of species resources.
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Affiliation(s)
- Qian Xue
- Poultry Institute, Chinese Academy of Agricultural Science, Yangzhou 225000, China.,Science and Technology Innovation Center, Poultry Institute of Jiangsu Province, Yangzhou 225000, China
| | - Guohui Li
- Poultry Institute, Chinese Academy of Agricultural Science, Yangzhou 225000, China.,Science and Technology Innovation Center, Poultry Institute of Jiangsu Province, Yangzhou 225000, China
| | - Yuxia Cao
- Poultry Institute, Chinese Academy of Agricultural Science, Yangzhou 225000, China
| | - Jianmei Yin
- Poultry Institute, Chinese Academy of Agricultural Science, Yangzhou 225000, China.,Science and Technology Innovation Center, Poultry Institute of Jiangsu Province, Yangzhou 225000, China
| | - Yunfen Zhu
- Poultry Institute, Chinese Academy of Agricultural Science, Yangzhou 225000, China
| | - Huiyong Zhang
- Poultry Institute, Chinese Academy of Agricultural Science, Yangzhou 225000, China.,Science and Technology Innovation Center, Poultry Institute of Jiangsu Province, Yangzhou 225000, China
| | - Chenghao Zhou
- Poultry Institute, Chinese Academy of Agricultural Science, Yangzhou 225000, China.,Science and Technology Innovation Center, Poultry Institute of Jiangsu Province, Yangzhou 225000, China
| | - Haiyu Shen
- Poultry Institute, Chinese Academy of Agricultural Science, Yangzhou 225000, China
| | - Xinhong Dou
- Poultry Institute, Chinese Academy of Agricultural Science, Yangzhou 225000, China
| | - Yijun Su
- Poultry Institute, Chinese Academy of Agricultural Science, Yangzhou 225000, China
| | - Kehua Wang
- Poultry Institute, Chinese Academy of Agricultural Science, Yangzhou 225000, China
| | - Jianmin Zou
- Poultry Institute, Chinese Academy of Agricultural Science, Yangzhou 225000, China
| | - Wei Han
- Poultry Institute, Chinese Academy of Agricultural Science, Yangzhou 225000, China.,Science and Technology Innovation Center, Poultry Institute of Jiangsu Province, Yangzhou 225000, China
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Xie D, Zhang J, Ding J, Yang J, Zhang Y. OLA1 is responsible for normal spindle assembly and SAC activation in mouse oocytes. PeerJ 2020; 8:e8180. [PMID: 31915569 PMCID: PMC6944127 DOI: 10.7717/peerj.8180] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2019] [Accepted: 11/08/2019] [Indexed: 12/15/2022] Open
Abstract
Background OLA1 is a member of the GTPase protein family; unlike other members, it possess both GTPase and ATPase activities, and can bind and hydrolyze ATP more efficiently than GTP. OLA1 participates in cell proliferation, oxidative response, protein synthesis and tumorigenesis. However, whether OLA1 is also required for oocyte meiosis is still unknown. Methods In this study, the localization, expression, and functions of OLA1 in the mouse oocyte meiosis were examined. Immunofluorescent and confocal microscopy were used to explore the location pattern of OLA1 in the mouse oocyte. Moreover, nocodazole treatment was used to confirm the spindle-like location of OLA1 during mouse meiosis. Western blot was used to explore the expression pattern of OLA1 in the mouse oocyte. Microinjection of siRNA was used to explore the OLA1 functions in the mouse oocyte meiosis. In addition, chromosome spreading was used to investigate the spindle assembly checkpoint (SAC) activity. Results Immunofluorescent staining showed that OLA1 evenly distributed in the cytoplasm at germinal vesicle (GV) stage. After meiosis resumption (GVBD), OLA1 co-localized with spindles, which was further identified by nocodazole treatment experiments. Knockdown of OLA1 impaired the germinal vesicle breakdown progression and finally resulted in a lower polar body extrusion rate. Immunofluorescence analysis indicated that knockdown of OLA1 led to abnormal spindle assembly, which was evidenced by multipolar spindles in OLA1-RNAi-oocytes. After 6 h post-GVBD in culture, an increased proportion of oocyte which has precociously entered into anaphase/telephase I (A/TI) was observed in OLA1-knockdown oocytes, suggesting that loss of OLA1 resulted in the premature segregation of homologous chromosomes. In addition, the chromosome spread analysis suggested that OLA1 knockdown induced premature anaphase onset was due to the precocious inactivation of SAC. Taken together, we concluded that OLA1 plays important role in GVBD, spindle assembly and SAC activation maintenance in oocyte meiosis.
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Affiliation(s)
- Di Xie
- Reproductive Medical Center, Renmin Hospital of Wuhan University, WuHan, HuBei, China.,Reproductive Medical Center, Central Theater General Hospital of PLA, WuHan, HuBei, China
| | - Juan Zhang
- Reproductive Medical Center, Central Theater General Hospital of PLA, WuHan, HuBei, China
| | - JinLi Ding
- Reproductive Medical Center, Renmin Hospital of Wuhan University, WuHan, HuBei, China
| | - Jing Yang
- Reproductive Medical Center, Renmin Hospital of Wuhan University, WuHan, HuBei, China
| | - Yan Zhang
- Department of Clinical Laboratory, Renmin Hospital of Wuhan University, WuHan, HuBei, China
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Liu Z, Zhang G, Deng M, Yang H, Pang J, Cai Y, Wan Y, Wang F. Inhibition of lysine-specific histone demethylase 1A results in meiotic aberration during oocyte maturation in vitro in goats. Theriogenology 2019; 143:168-178. [PMID: 31881434 DOI: 10.1016/j.theriogenology.2019.12.011] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2019] [Revised: 11/21/2019] [Accepted: 12/18/2019] [Indexed: 12/13/2022]
Abstract
Histone methylation is associated with oocyte maturation in several species and is also expected in goat oocytes, while the mechanism is still unclear. Therefore, single-cell RNA sequencing (scRNA-seq) was performed on goat germinal vesicle (GV) and metaphase II (MII) oocytes, and the functions of lysine-specific histone demethylase 1A (LSD1), one of the differentially expressed genes (DEGs) were investigated during in vitro maturation (IVM) of goat oocytes. Through scRNA-seq, 4516 DEGs were identified from GV oocytes and MII oocytes in goats, among which there were 16 histone methyltransferase and demethylase DEGs (including LSD1). The functions of LSD1 during IVM of goat oocytes were investigated through its inhibitor, GSK-LSD1. We found that the first polar body extrusion rate of goat oocytes significantly reduced with an increase in GSK-LSD1 concentration supplemented into IVM medium (0 μM: 58.84 ± 0.95%; 2.5 μM: 52.14 ± 0.51%, P < 0.01; 50 μM: 41.22 ± 0.42%, P < 0.001; 100 μM: 29.78 ± 1.78%, P < 0.001). Moreover, compared with the control group, the level of H3K4me2 methylation and p-H2AX in goat oocytes significantly increased (P < 0.001 and P < 0.01, respectively) upon 50-μM GSK-LSD1 treatment for 12 h. Furthermore, abnormalities in spindle assembly (25.94 ± 1.02% vs. 71.15 ± 3.32%; P < 0.01) and chromosome alignment (22.93 ± 1.11% vs. 76.03 ± 3.25%; P < 0.01) were observed, and cytoskeletal organization (15.31 ± 1.60% vs. 67.50 ± 3.09%; P < 0.001) was disrupted upon treatment with 50-μM GSK-LSD1 for 12 h, which compared with that in the control group. Additionally, the ratio of BCL2:BAX significantly higher (P < 0.01) in oocytes with 50-μM GSK-LSD1 treatment than that in control group. Collectively, these results indicate the important role of LSD1 in meiotic maturation of goat oocytes. Our data not only clarify dynamic changes in mRNA during oocyte maturation but also provide a theoretical basis and technical means for further studies of meiotic maturation of goat oocytes.
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Affiliation(s)
- Zifei Liu
- Jiangsu Livestock Embryo Engineering Laboratory, College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, China
| | - Guomin Zhang
- Jiangsu Livestock Embryo Engineering Laboratory, College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, China; Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, China
| | - Mingtian Deng
- Jiangsu Livestock Embryo Engineering Laboratory, College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, China
| | - Hua Yang
- Jiangsu Livestock Embryo Engineering Laboratory, College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, China
| | - Jing Pang
- Jiangsu Livestock Embryo Engineering Laboratory, College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, China
| | - Yu Cai
- Jiangsu Livestock Embryo Engineering Laboratory, College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, China
| | - Yongjie Wan
- Jiangsu Livestock Embryo Engineering Laboratory, College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, China.
| | - Feng Wang
- Jiangsu Livestock Embryo Engineering Laboratory, College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, China.
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Zhang M, ShiYang X, Zhang Y, Miao Y, Chen Y, Cui Z, Xiong B. Coenzyme Q10 ameliorates the quality of postovulatory aged oocytes by suppressing DNA damage and apoptosis. Free Radic Biol Med 2019; 143:84-94. [PMID: 31398498 DOI: 10.1016/j.freeradbiomed.2019.08.002] [Citation(s) in RCA: 56] [Impact Index Per Article: 11.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/09/2019] [Revised: 07/22/2019] [Accepted: 08/05/2019] [Indexed: 01/06/2023]
Abstract
Postovulatory aging is known to compromise the oocyte quality as well as subsequent embryo development in many different animal models, and becomes one of the most intractable issues that limit the outcome of human assisted reproductive technology (ART). However, the strategies to prevent the deterioration of aged oocytes and relevant mechanisms are still underexplored. Here, we find that supplementation of CoQ10, a natural antioxidant present in human follicular fluids, is able to restore the postovulatory aging-induced fragmentation of oocytes and decline of fertilization. Importantly, we show that CoQ10 supplementation recovers postovulatory aging-caused meiotic defects such as disruption of spindle assembly, misalignment of chromosome, disappearance of actin cap, and abnormal distribution patterns of mitochondria and cortical granules. In addition, CoQ10 protects aged oocytes from premature exocytosis of ovastacin, cleavage of sperm binding site ZP2, and loss of localization of Juno, to maintain the fertilization potential. Notably, CoQ10 suppresses the aging-induced oxidative stress by reducing the levels of superoxide and DNA damage, ultimately inhibiting the apoptosis. Taken together, our findings demonstrate that CoQ10 supplementation is a feasible and effective way to prevent postovulatory aging and preserve the oocyte quality, potentially contributing to improve the successful rate of IVF (in vitro fertilization) and ICSI (intracytoplasmic sperm injection) during human ART.
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Affiliation(s)
- Mianqun Zhang
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, 210095, China
| | - Xiayan ShiYang
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, 210095, China
| | - Yuwei Zhang
- Research Center of Combine Traditional Chinese and Western Medicine, Affiliated Traditional Medicine Hospital, Southwest Medical University, Luzhou, Sichuan, 646000, China
| | - Yilong Miao
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, 210095, China
| | - Ying Chen
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, 210095, China
| | - Zhaokang Cui
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, 210095, China
| | - Bo Xiong
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, 210095, China.
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9
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Regulation of the meiotic divisions of mammalian oocytes and eggs. Biochem Soc Trans 2018; 46:797-806. [PMID: 29934303 PMCID: PMC6103459 DOI: 10.1042/bst20170493] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2018] [Revised: 05/29/2018] [Accepted: 05/30/2018] [Indexed: 12/28/2022]
Abstract
Initiated by luteinizing hormone and finalized by the fertilizing sperm, the mammalian oocyte completes its two meiotic divisions. The first division occurs in the mature Graafian follicle during the hours preceding ovulation and culminates in an extreme asymmetric cell division and the segregation of the two pairs of homologous chromosomes. The newly created mature egg rearrests at metaphase of the second meiotic division prior to ovulation and only completes meiosis following a Ca2+ signal initiated by the sperm at gamete fusion. Here, we review the cellular events that govern the passage of the oocyte through meiosis I with a focus on the role of the spindle assembly checkpoint in regulating its timing. In meiosis II, we examine how the egg achieves its arrest and how the fertilization Ca2+ signal allows the initiation of embryo development.
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10
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Xie Y, Cheng M, Lu S, Yuan Q, Yang D, Chen Y, Pan C, Qiu Y, Xiong B. Eg5 orchestrates porcine oocyte maturational progression by maintaining meiotic organelle arrangement. Cell Div 2018; 13:4. [PMID: 29796058 PMCID: PMC5966870 DOI: 10.1186/s13008-018-0037-1] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2018] [Accepted: 05/15/2018] [Indexed: 02/06/2023] Open
Abstract
Background Kinesin superfamily proteins are microtubule-based molecular motors essential for the intracellular transport of various cargos, including organelles, proteins, and RNAs. However, their exact roles during mammalian oocyte meiosis have not been fully clarified. Results Herein, we investigated the critical events during porcine oocyte meiotic maturation with the treatment of Eg5-specific inhibitor monastrol. We found that Eg5 inhibition resulted in oocyte meiotic failure by displaying the poor expansion of cumulus cells and reduced rate of polar body extrusion. In the meantime, the spindle assembly and chromosome alignment were compromised, accompanied by the decreased level of acetylated α-tubulin, indicative of less stable microtubules. Impaired actin dynamics and mitochondria integrity were also observed in Eg5-inhibited oocytes. Additionally, inhibition of Eg5 caused the abnormal distribution of cortical granules and ovastacin, a cortical granule component, potentially leading to the fertilization failure. Conclusions Our findings reveal that Eg5 possesses an important function in porcine oocyte meiotic progression by regulating the organelle dynamics and arrangement.
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Affiliation(s)
- Yan Xie
- 1Laboratory Medicine Center, Nanfang Hospital, Southern Medical University, Guangzhou, 510515 China.,2Department of Reproductive Medicine, The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, 510120 China
| | - Minghui Cheng
- 3College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, 210095 China
| | - Shan Lu
- 2Department of Reproductive Medicine, The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, 510120 China
| | - Qilong Yuan
- 2Department of Reproductive Medicine, The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, 510120 China
| | - Dongyu Yang
- 2Department of Reproductive Medicine, The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, 510120 China
| | - Ying Chen
- 3College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, 210095 China
| | - Chen Pan
- 3College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, 210095 China
| | - Yurong Qiu
- 1Laboratory Medicine Center, Nanfang Hospital, Southern Medical University, Guangzhou, 510515 China
| | - Bo Xiong
- 3College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, 210095 China
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11
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Miao Y, Zhou C, Cui Z, Zhang M, ShiYang X, Lu Y, Xiong B. Postovulatory aging causes the deterioration of porcine oocytes via induction of oxidative stress. FASEB J 2018; 32:1328-1337. [PMID: 29109171 DOI: 10.1096/fj.201700908r] [Citation(s) in RCA: 44] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
Negative effects of postovulatory aging on fertilization ability and subsequent embryo development have been reported in rodents; however, the molecular and cellular changes during this process have not been fully defined. Here, we used porcine oocytes, a model that is physiologically and developmentally similar to humans, to explore the molecular mechanisms that underlie how postovulatory aging affects oocyte quality and fertilization capacity. We found that postovulatory aging caused the morphologic change of porcine oocytes by exhibiting the incompact expansion of cumulus cells and an increased occurrence of fragmentation. Aging also impaired oocyte quality by disrupting organelle structures, including the spindle assembly, actin polymerization, and mitochondrial integrity. Moreover, postovulatory aging led to the abnormal distribution of cortical granules and ovastacin, which, in turn, resulted in defective sperm binding and consequently compromised fertilization potential. Of note, we observed that postovulatory aging induced oxidative stress with a high level of reactive oxygen species and apoptotic rate in oocytes, thereby resulting in the deterioration of critical factors in the maintenance of oocyte quality and fertilization capacity. Taken together, our findings demonstrate that postovulatory aging perturbs a variety of molecular and cellular changes in porcine oocytes by inducing oxidative stress.-Miao, Y., Zhou, C., Cui, Z., Zhang, M., ShiYang, X., Lu, Y., Xiong, B. Postovulatory aging causes the deterioration of porcine oocytes via induction of oxidative stress.
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Affiliation(s)
- Yilong Miao
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, China
| | - Changyin Zhou
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, China
| | - Zhaokang Cui
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, China
| | - Mianqun Zhang
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, China
| | - Xiayan ShiYang
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, China
| | - Yajuan Lu
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, China
| | - Bo Xiong
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, China
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12
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Miao Y, Zhou C, Bai Q, Cui Z, ShiYang X, Lu Y, Zhang M, Dai X, Xiong B. The protective role of melatonin in porcine oocyte meiotic failure caused by the exposure to benzo(a)pyrene. Hum Reprod 2017; 33:116-127. [DOI: 10.1093/humrep/dex331] [Citation(s) in RCA: 47] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2017] [Accepted: 10/12/2017] [Indexed: 12/27/2022] Open
Affiliation(s)
- Yilong Miao
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing 210095, China
| | - Changyin Zhou
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing 210095, China
| | - Qingyun Bai
- School of Basic Medical Sciences, Peking University, Beijing 100191, China
| | - Zhaokang Cui
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing 210095, China
| | - Xiayan ShiYang
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing 210095, China
| | - Yajuan Lu
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing 210095, China
| | - Mianqun Zhang
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing 210095, China
| | - Xiaoxin Dai
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing 210095, China
| | - Bo Xiong
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing 210095, China
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13
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Miao Y, Zhou C, Cui Z, Tang L, ShiYang X, Lu Y, Zhang M, Dai X, Xiong B. Dynein promotes porcine oocyte meiotic progression by maintaining cytoskeletal structures and cortical granule arrangement. Cell Cycle 2017; 16:2139-2145. [PMID: 28933593 DOI: 10.1080/15384101.2017.1380133] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
Cytoplasmic dynein is a family of cytoskeletal motor proteins that move towards the minus-end of the microtubules to perform functions in a variety of mitotic processes such as cargo transport, organelle positioning, chromosome movement and centrosome assembly. However, its specific roles during mammalian oocyte meiosis have not been fully defined. Herein, we investigated the critical events during porcine oocyte meiotic maturation after inhibition of dynein by Ciliobrevin D treatment. We found that oocyte meiotic progression was arrested when inhibited of dynein by showing the poor expansion of cumulus cells and decreased rate of polar body extrusion. Meanwhile, the spindle assembly and chromosome alignment were disrupted, accompanied by the reduced level of acetylated α-tubulin, indicative of weakened microtubule stability. Defective actin polymerization on the plasma membrane was also observed in dynein-inhibited oocytes. In addition, inhibition of dynein caused the abnormal distribution of cortical granules and precocious exocytosis of ovastacin, a cortical granule component, which predicts that ZP2, the sperm binding site in the zona pellucida, might be prematurely cleaved in the unfertilized dynein-inhibited oocytes, potentially leading to the fertilization failure. Collectively, our findings reveal that dynein plays a part in porcine oocyte meiotic progression by regulating the cytoskeleton dynamics including microtubule stability, spindle assembly, chromosome alignment and actin polymerization. We also find that dynein mediates the normal cortical granule distribution and exocytosis timing of ovastacin in unfertilized eggs which are the essential for the successful fertilization.
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Affiliation(s)
- Yilong Miao
- a College of Animal Science and Technology, Nanjing Agricultural University , Nanjing , China
| | - Changyin Zhou
- a College of Animal Science and Technology, Nanjing Agricultural University , Nanjing , China
| | - Zhaokang Cui
- a College of Animal Science and Technology, Nanjing Agricultural University , Nanjing , China
| | - Liansheng Tang
- b Shandong Institute of Pharmaceutical Industry, Shandong Provincial Key Laboratory of Chemical Drugs , Jinan , China
| | - Xiayan ShiYang
- a College of Animal Science and Technology, Nanjing Agricultural University , Nanjing , China
| | - Yajuan Lu
- a College of Animal Science and Technology, Nanjing Agricultural University , Nanjing , China
| | - Mianqun Zhang
- a College of Animal Science and Technology, Nanjing Agricultural University , Nanjing , China
| | - Xiaoxin Dai
- a College of Animal Science and Technology, Nanjing Agricultural University , Nanjing , China
| | - Bo Xiong
- a College of Animal Science and Technology, Nanjing Agricultural University , Nanjing , China
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14
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Cheng JM, Liu YX. Age-Related Loss of Cohesion: Causes and Effects. Int J Mol Sci 2017; 18:E1578. [PMID: 28737671 PMCID: PMC5536066 DOI: 10.3390/ijms18071578] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2017] [Revised: 07/18/2017] [Accepted: 07/19/2017] [Indexed: 12/25/2022] Open
Abstract
Aneuploidy is a leading genetic cause of birth defects and lower implantation rates in humans. Most errors in chromosome number originate from oocytes. Aneuploidy in oocytes increases with advanced maternal age. Recent studies support the hypothesis that cohesion deterioration with advanced maternal age represents a leading cause of age-related aneuploidy. Cohesin generates cohesion, and is established only during the premeiotic S phase of fetal development without any replenishment throughout a female's period of fertility. Cohesion holds sister chromatids together until meiosis resumes at puberty, and then chromosome segregation requires the release of sister chromatid cohesion from chromosome arms and centromeres at anaphase I and anaphase II, respectively. The time of cohesion cleavage plays an important role in correct chromosome segregation. This review focuses specifically on the causes and effects of age-related cohesion deterioration in female meiosis.
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Affiliation(s)
- Jin-Mei Cheng
- State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, China.
- Institute of Reproductive Medicine, School of Medicine, Nantong University, Nantong 226001, China.
| | - Yi-Xun Liu
- State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, China.
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