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Liu Z, Xi Q, Hou M, Zou T, Liu H, Zhou X, Jin L, Zhu L, Zhang X. Loss of function variant in CIP2A associated with female infertility with early embryonic arrest and fragmentation. Biochim Biophys Acta Mol Basis Dis 2024:167228. [PMID: 38734318 DOI: 10.1016/j.bbadis.2024.167228] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2023] [Revised: 05/06/2024] [Accepted: 05/07/2024] [Indexed: 05/13/2024]
Abstract
BACKGROUND Early embryonic arrest and fragmentation (EEAF) is a common cause of female infertility, but the genetic causes remain to be largely unknown. CIP2A encodes the cellular inhibitor of PP2A, playing a crucial role in mitosis and mouse oocyte meiosis. METHODS Exome sequencing and Sanger sequencing were performed to identify candidate causative genes in patients with EEAF. The pathogenicity of the CIP2A variant was assessed and confirmed in cultured cell lines and human oocytes through Western blotting, semi-quantitative RT-PCR, TUNEL staining, and fluorescence localization analysis. FINDINGS We identified CIP2A (c.1510C > T, p.L504F) as a novel candidate disease-causing gene in human EEAF from a consanguineous family. L504 is highly conserved throughout evolution. The CIP2A variant (c.1510C > T, p.L504F) reduced the expression level of the mutant CIP2A protein, leading to the abnormal aggregation of mutant CIP2A protein and cell apoptosis. Abnormal aggregation of CIP2A protein and chromosomal dispersion occurred in the patient's oocytes and early embryos. We further replicated the patient phenotype by knockdown CIP2A in human oocytes. Additionally, CIP2A deficiency resulted in decreased levels of phosphorylated ERK1/2. INTERPRETATION We first found that the CIP2A loss-of-function variant associate with female infertility characterized by EEAF. Our findings suggest the uniqueness and importance of CIP2A gene in human oocyte and early embryo development. FUNDING This work was supported by National Key Research and Development Program of China (2023YFC2706302), the National Natural Science Foundation of China (81000079, 81170165, and 81870959), the HUST Academic Frontier Youth Team (2016QYTD02), and the Key Research of Huazhong University of Science and Technology, Tongji Hospital (2022A20).
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Affiliation(s)
- Zhenxing Liu
- Key Laboratory of Molecular Biophysics of the Ministry of Education, College of Life Science and Technology and Center for Human Genome Research, Huazhong University of Science and Technology, Wuhan, Hubei 430074, China
| | - Qingsong Xi
- Oncology Center, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Meiqi Hou
- Key Laboratory of Molecular Biophysics of the Ministry of Education, College of Life Science and Technology and Center for Human Genome Research, Huazhong University of Science and Technology, Wuhan, Hubei 430074, China
| | - Tingting Zou
- Key Laboratory of Molecular Biophysics of the Ministry of Education, College of Life Science and Technology and Center for Human Genome Research, Huazhong University of Science and Technology, Wuhan, Hubei 430074, China
| | - Huihui Liu
- Key Laboratory of Molecular Biophysics of the Ministry of Education, College of Life Science and Technology and Center for Human Genome Research, Huazhong University of Science and Technology, Wuhan, Hubei 430074, China
| | - Xiaopei Zhou
- Key Laboratory of Molecular Biophysics of the Ministry of Education, College of Life Science and Technology and Center for Human Genome Research, Huazhong University of Science and Technology, Wuhan, Hubei 430074, China
| | - Lei Jin
- Reproductive Medicine Center, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Lixia Zhu
- Reproductive Medicine Center, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China.
| | - Xianqin Zhang
- Key Laboratory of Molecular Biophysics of the Ministry of Education, College of Life Science and Technology and Center for Human Genome Research, Huazhong University of Science and Technology, Wuhan, Hubei 430074, China.
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Jiang X, Xu X, Wang B, Song K, Zhang J, Chen Y, Tian Y, Weng J, Liang Y, Ma W. Adverse effects of 2-Methoxyestradiol on mouse oocytes during reproductive aging. Chem Biol Interact 2023; 369:110277. [PMID: 36414027 DOI: 10.1016/j.cbi.2022.110277] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2022] [Revised: 10/26/2022] [Accepted: 11/18/2022] [Indexed: 11/21/2022]
Abstract
2-Methoxyestradiol (2-ME2) is a metabolite of 17β-estradiol and is currently in clinical trials as an antitumor agent. Here we found 2-ME2 level remains stable in the local environment of ovaries but declines in serum in aging mice, and exogenous 2-ME2 impacts the meiotic maturation of mouse oocytes in dose-dependent manner. In vitro 2-ME2 application arrested oocytes at metaphase I (MI), with abnormal spindle structure and chromosome alignment. 2-ME2 exposure induced excessive production of reactive oxygen species (ROS) and malondialdehyde, as well as accelerated apoptosis progression. 2-ME2 unbalanced mitochondrial dynamics by increasing DRP1 and MFN1 while decreasing Opa1. Similar phenotypes were also observed in oocytes from mice injected intraperitoneally with 2-ME2. Taken together, this study indicates 2-ME2 exposure impairs oocyte meiotic maturation through inducing mitochondrial imbalance, oxidative stress and apoptosis. The gradual decline in oocyte quality and quantity may be associated with the stable 2-ME2 in ovaries during female reproductive aging.
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Affiliation(s)
- Xiuying Jiang
- Devision of Sport Anatomy, School of Sport Science, Beijing Sport University, Beijing, 100084, China
| | - Xiangning Xu
- Department of Histology and Embryology, School of Basic Medical Sciences, Capital Medical University, Beijing, 100069, China
| | - Bicheng Wang
- Department of Histology and Embryology, School of Basic Medical Sciences, Capital Medical University, Beijing, 100069, China
| | - Ke Song
- Department of Histology and Embryology, School of Basic Medical Sciences, Capital Medical University, Beijing, 100069, China
| | - Jiaqi Zhang
- Department of Histology and Embryology, School of Basic Medical Sciences, Capital Medical University, Beijing, 100069, China
| | - Ye Chen
- Department of Histology and Embryology, School of Basic Medical Sciences, Capital Medical University, Beijing, 100069, China
| | - Ying Tian
- Department of Histology and Embryology, School of Basic Medical Sciences, Capital Medical University, Beijing, 100069, China
| | - Jing Weng
- Department of Histology and Embryology, School of Basic Medical Sciences, Capital Medical University, Beijing, 100069, China
| | - Yuanjing Liang
- Department of Histology and Embryology, School of Basic Medical Sciences, Capital Medical University, Beijing, 100069, China
| | - Wei Ma
- Department of Histology and Embryology, School of Basic Medical Sciences, Capital Medical University, Beijing, 100069, China.
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Liu XM, Chen F, Wang L, Zhang F, Huo LJ. Checkpoint kinases are required for oocyte meiotic progression by the maintenance of normal spindle structure and chromosome condensation. Exp Cell Res 2021; 405:112657. [PMID: 34081985 DOI: 10.1016/j.yexcr.2021.112657] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2020] [Revised: 03/31/2021] [Accepted: 05/04/2021] [Indexed: 11/16/2022]
Abstract
Checkpoint kinases (Chk) 1/2 are known for DNA damage checkpoint and cell cycle control in somatic cells. According to recent findings, the involvement of Chk1 in oocyte meiotic resumption and Chk2 is regarded as an essential regulator for progression at the post metaphase I stage (MI). In this study, AZD7762 (Chk1/2 inhibitor) and SB218078 (Chk1 inhibitor) were used to uncover the joint roles of Chk1/2 and differentiate the importance of Chk1 and Chk2 during oocyte meiotic maturation. Inhibition of Chk1/2 or Chk1 alone had no significant effect on germinal vesicle breakdown (GVBD) but significantly inhibited the first polar body (PB1). Interestingly, inhibition of Chk1 alone could not increase or completely block the extrusion of PB1 like Chk1/2 inhibition. Also, Chk1/2 inhibition resulted in defective meiotic spindle organization and chromosome condensation both in MI and metaphase II (MII) stages of oocytes. The location of γ-tubulin and Securin were abnormal or missing, while P38 MAPK was activated by Chk1/2 inhibition. Meanwhile, Chk1/2 inhibition reduced the percentage of the second polar body extrusion and pronuclear formation. In conclusion, our results further understand the functions and regulatory mechanism of Chk1/2 during oocyte meiotic maturation.
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Affiliation(s)
- Xiao-Ming Liu
- Key Laboratory of Agricultural Animal Genetics, Breeding and Reproduction, Education Ministry of China, College of Animal Science and Technology, Huazhong Agricultural University, Wuhan, 430070, People's Republic of China; Reproductive Medicine Centre, Department of Obstetrics and Gynecology, The Second Affiliated Hospital of Wenzhou Medical University, Wenzhou, 325000, People's Republic of China
| | - Fang Chen
- Key Laboratory of Agricultural Animal Genetics, Breeding and Reproduction, Education Ministry of China, College of Animal Science and Technology, Huazhong Agricultural University, Wuhan, 430070, People's Republic of China; Laboratory Animal Centre, Wenzhou Medical University, Wenzhou, 325000, People's Republic of China
| | - Li Wang
- Key Laboratory of Agricultural Animal Genetics, Breeding and Reproduction, Education Ministry of China, College of Animal Science and Technology, Huazhong Agricultural University, Wuhan, 430070, People's Republic of China; Jiangsu Agri-animal Husbandry Vocational College, Taizhou, 225300, People's Republic of China
| | - Fan Zhang
- Reproductive Medicine Centre, Department of Obstetrics and Gynecology, The Second Affiliated Hospital of Wenzhou Medical University, Wenzhou, 325000, People's Republic of China
| | - Li-Jun Huo
- Key Laboratory of Agricultural Animal Genetics, Breeding and Reproduction, Education Ministry of China, College of Animal Science and Technology, Huazhong Agricultural University, Wuhan, 430070, People's Republic of China.
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Dong F, Meng TG, Li J, Wang F, Li YY, Ouyang YC, Hou Y, Wang ZB, Schatten H, Sun QY. Inhibition of CDK4/6 kinases causes production of aneuploid oocytes by inactivating the spindle assembly checkpoint and accelerating first meiotic progression. Biochim Biophys Acta Mol Cell Res 2021; 1868:119044. [PMID: 33865884 DOI: 10.1016/j.bbamcr.2021.119044] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 05/21/2020] [Revised: 04/09/2021] [Accepted: 04/12/2021] [Indexed: 11/25/2022]
Abstract
Cyclin D-CDK4/6 complex mediates the transition from the G1 to S phase in mammalian somatic cells. Meiotic oocytes pass through the G2/M transition and complete the first meiosis to reach maturation at the metaphase of meiosis II without intervening S phase, while Cyclin D-CDK4/6 complex is found to express during meiotic progression. Whether Cyclin D-CDK4/6 complex regulates meiotic cell cycle progression is not known. Here, we found its different role in oocyte meiosis: Cyclin D-CDK4/6 complex served as a regulator of spindle assembly checkpoint (SAC) to prevent aneuploidy in meiosis I. Inhibition of CDK4/6 kinases disrupted spindle assembly, chromosome alignment and kinetochore-microtubule attachments, but unexpectedly accelerated meiotic progression by inactivating SAC, consequently resulting in production of aneuploid oocytes. Further studies showed that the MPF activity decrease before first polar body extrusion was accelerated probably by inactivation of the SAC to promote ubiquitin-mediated cyclin B1 degradation. Taken together, these data reveal a novel role of Cyclin D-CDK4/6 complex in mediating control of the SAC in female meiosis I.
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Affiliation(s)
- Feng Dong
- College of Life Science, Shanxi University, Taiyuan, Shanxi 030006, PR China
| | - Tie-Gang Meng
- Fertility Preservation Lab, Reproductive Medicine Center, Guangdong Second Provincial General Hospital, Guangzhou 510317, PR China; State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, PR China
| | - Jian Li
- State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, PR China
| | - Feng Wang
- State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, PR China
| | - Yuan-Yuan Li
- State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, PR China
| | - Ying-Chun Ouyang
- State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, PR China
| | - Yi Hou
- State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, PR China
| | - Zhen-Bo Wang
- State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, PR China
| | - Heide Schatten
- Department of Veterinary Pathobiology, University of Missouri, Columbia, MO 65211, USA
| | - Qing-Yuan Sun
- Fertility Preservation Lab, Reproductive Medicine Center, Guangdong Second Provincial General Hospital, Guangzhou 510317, PR China; State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, PR China.
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Ying Y, Liu S, Wu Y, Li S, Huang Q. Anticentromere antibody induced by immunization with centromere protein a and Freund's complete adjuvant may interfere with mouse oocyte meiosis. Reprod Biol Endocrinol 2021; 19:50. [PMID: 33794912 PMCID: PMC8015055 DOI: 10.1186/s12958-021-00737-w] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/31/2021] [Accepted: 03/25/2021] [Indexed: 02/05/2023] Open
Abstract
BACKGROUND Anticentromere antibody (ACA) is a member of the antinuclear antibody (ANA) family, and recent studies have found that ACA may be associated with oocyte maturation disorders; however, the possible mechanism behind this phenomenon remains unknown. We conducted this study to investigate whether ACA could penetrate into the living oocytes and interfere with oocyte meiosis in a mouse model. METHODS We divided mice into three groups: human recombinant centromere protein-A (human CENP-A, HA) and complete Freund's adjuvant (CFA) were used to immunize mice for the study group (HA + CFA), and mice injected with CFA (CFA group) or saline (Saline group), respectively, served as controls. After immunization, serum anti-CENP-A antibody was detected by indirect immunofluorescence assay (IIFT) and enzyme-linked immunosorbent assay (ELISA). Chromosome alignment and intracellular IgG localization in MI- and MII-stage oocytes were investigated by immunofluorescence analysis. RESULTS Positive ACAs were successfully induced by immunization with CENP-A and CFA, and results showed that the serum level of anti-CENP-A antibody was significantly higher in the HA + CFA group compared with the control groups. There was marked increase of chromosome misalignments in MI and MII oocytes in the HA + CFA group compared to the control groups. However, no oocytes from any of the three groups showed intracellular antibody immunofluorescence. CONCLUSIONS The development and maturation of oocytes were impaired in peripheral ACA positive mice, which exhibited severe chromosomal misalignments in metaphase meiosis; however, no evidence of ACAs entering the oocytes was observed, thus the underlying mechanism needs further exploration.
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Affiliation(s)
- Ying Ying
- grid.417009.b0000 0004 1758 4591Department of Obstetrics and Gynecology, Key Laboratory for Major Obstetric Diseases of Guangdong Province, Reproductive Medicine Center, The Third Affiliated Hospital of Guangzhou Medical University, 63 Duobao Road, Liwan District, Guangzhou, China
| | - Shuang Liu
- grid.417009.b0000 0004 1758 4591Department of Obstetrics and Gynecology, Key Laboratory for Major Obstetric Diseases of Guangdong Province, Reproductive Medicine Center, The Third Affiliated Hospital of Guangzhou Medical University, 63 Duobao Road, Liwan District, Guangzhou, China
| | - Yixuan Wu
- grid.417009.b0000 0004 1758 4591Department of Obstetrics and Gynecology, Key Laboratory for Major Obstetric Diseases of Guangdong Province, Reproductive Medicine Center, The Third Affiliated Hospital of Guangzhou Medical University, 63 Duobao Road, Liwan District, Guangzhou, China
| | - Sichen Li
- grid.417009.b0000 0004 1758 4591Department of Obstetrics and Gynecology, Key Laboratory for Major Obstetric Diseases of Guangdong Province, Reproductive Medicine Center, The Third Affiliated Hospital of Guangzhou Medical University, 63 Duobao Road, Liwan District, Guangzhou, China
| | - Qing Huang
- grid.417009.b0000 0004 1758 4591Department of Obstetrics and Gynecology, Key Laboratory for Major Obstetric Diseases of Guangdong Province, Reproductive Medicine Center, The Third Affiliated Hospital of Guangzhou Medical University, 63 Duobao Road, Liwan District, Guangzhou, China
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Chuang CH, Schlientz AJ, Yang J, Bowerman B. Microtubule assembly and pole coalescence: early steps in Caenorhabditiselegans oocyte meiosis I spindle assembly. Biol Open 2020; 9:bio052308. [PMID: 32493729 PMCID: PMC7328010 DOI: 10.1242/bio.052308] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2020] [Accepted: 05/11/2020] [Indexed: 12/17/2022] Open
Abstract
How oocytes assemble bipolar meiotic spindles in the absence of centrosomes as microtubule organizing centers remains poorly understood. We have used live cell imaging in Caenorhabditis elegans to investigate requirements for the nuclear lamina and for conserved regulators of microtubule dynamics during oocyte meiosis I spindle assembly, assessing these requirements with respect to recently identified spindle assembly steps. We show that the nuclear lamina is required for microtubule bundles to form a peripheral cage-like structure that appears shortly after oocyte nuclear envelope breakdown and surrounds the oocyte chromosomes, although bipolar spindles still assembled in its absence. Although two conserved regulators of microtubule nucleation, RAN-1 and γ-tubulin, are not required for bipolar spindle assembly, both contribute to normal levels of spindle-associated microtubules and spindle assembly dynamics. Finally, the XMAP215 ortholog ZYG-9 and the nearly identical minus-end directed kinesins KLP-15/16 are required for proper assembly of the early cage-like structure of microtubule bundles, and for early spindle pole foci to coalesce into a bipolar structure. Our results provide a framework for assigning molecular mechanisms to recently described steps in C. elegans oocyte meiosis I spindle assembly.
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Affiliation(s)
- Chien-Hui Chuang
- Institute of Molecular Biology and Department of Biology, 1229 University of Oregon, Eugene, Oregon 97403, USA
| | - Aleesa J Schlientz
- Institute of Molecular Biology and Department of Biology, 1229 University of Oregon, Eugene, Oregon 97403, USA
| | - Jie Yang
- Institute of Molecular Biology and Department of Biology, 1229 University of Oregon, Eugene, Oregon 97403, USA
| | - Bruce Bowerman
- Institute of Molecular Biology and Department of Biology, 1229 University of Oregon, Eugene, Oregon 97403, USA
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Wang XH, Yin S, Ou XH, Luo SM. Increase of mitochondria surrounding spindle causes mouse oocytes arrested at metaphase I stage. Biochem Biophys Res Commun 2020; 527:1043-1049. [PMID: 32439172 DOI: 10.1016/j.bbrc.2020.05.037] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2020] [Accepted: 05/06/2020] [Indexed: 11/19/2022]
Abstract
During oocyte meiosis, mitochondria usually surround spindle to meet the energy demand of spindle migration and chromosome segregation. Therefore, the mitochondrion surrounding spindle is widely accepted as an important indicator to demonstrate the mitochondrial function in oocyte studies. However, the role of mitochondria surrounding spindle in oocyte quality is not exactly addressed. Mitofusin-2 (MFN2) is a mitochondrial outer membrane GTPase that mediates mitochondrial clustering and fusion. Here, we increased the mitochondria surrounding spindle by overexpression of MFN2 in mouse oocytes. Results indicate that the increase of mitochondria surrounding spindle has little effect on germinal vesicle breakdown (GVBD), spindle migration, mitochondrial membrane potential (MMP), reactive oxygen species (ROS) production and Endoplasmic reticulum (ER) distribution, while blocks chromosome segregation, destroys the spindle, and finally causes most of the oocytes to arrest at metaphase I stage. Collectively, our results demonstrate the mitochondria surrounding spindle is precisely regulated during oocyte maturation, while too much of it may cause abnormal oocyte meiosis. Therefore, although mitochondrion surrounding spindle is a typical biological event during oocyte maturation, utilizing it to demonstrate the mitochondrial function and oocyte quality should be much careful.
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Affiliation(s)
- Xing-Hua Wang
- College of Animal Science and Technology, Qingdao Agricultural University, Qingdao, 266109, China
| | - Shen Yin
- College of Life Sciences, Institute of Reproductive Sciences, Qingdao Agricultural University, Qingdao, 266109, China
| | - Xiang-Hong Ou
- Fertility Preservation Lab, Reproductive Medicine Center, Guangdong Second Provincial General Hospital, Guangzhou, 510317, China
| | - Shi-Ming Luo
- Fertility Preservation Lab, Reproductive Medicine Center, Guangdong Second Provincial General Hospital, Guangzhou, 510317, China.
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Sui L, Nie J, Xiao P, Yan K, Zhang H, Liu J, Zhang H, Cui K, Lu K, Liang X. Maternal benzo[a]pyrene exposure is correlated with the meiotic arrest and quality deterioration of offspring oocytes in mice. Reprod Toxicol 2019; 93:10-18. [PMID: 31874190 DOI: 10.1016/j.reprotox.2019.12.003] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2019] [Revised: 11/22/2019] [Accepted: 12/05/2019] [Indexed: 12/11/2022]
Abstract
Benzo[a]pyrene (BaP) is a polycyclic aromatic hydrocarbon (PAH) in particulate matter that has a diameter of ≤2.5 μm (PM2.5). Studies have demonstrated that BaP exposure causes oocyte meiotic arrest in mice. However, whether BaP exposure also affects oocyte maturation in offspring remains unclear. To test this, female mice were administered BaP before pregnancy to generate BaP-exposed offspring. Our findings showed that BaP exposure reduced the in vitro maturation and increased the abnormalities of meiotic apparatus in offspring oocytes. In addition, BaP exposure reduced the mitochondrial content and intracellular ATP generation, induced early apoptosis, increased reactive oxidative species accumulation and the genomic DNA 5-methylcytosine (5mc) level in offspring oocytes. Along with the abovementioned defective parameters, maternal BaP exposure further compromised the embryo developmental competence of offspring oocytes. In summary, our study demonstrated that maternal BaP exposure compromised offspring oocyte maturation and quality.
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Affiliation(s)
- Lumin Sui
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, Guangxi University, Nanning, Guangxi 530004, China; College of Animal Science & Technology, Guangxi University, Nanning, Guangxi 530004, China
| | - Junyu Nie
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, Guangxi University, Nanning, Guangxi 530004, China; College of Animal Science & Technology, Guangxi University, Nanning, Guangxi 530004, China
| | - Peng Xiao
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, Guangxi University, Nanning, Guangxi 530004, China; College of Animal Science & Technology, Guangxi University, Nanning, Guangxi 530004, China
| | - Ke Yan
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, Guangxi University, Nanning, Guangxi 530004, China; College of Animal Science & Technology, Guangxi University, Nanning, Guangxi 530004, China
| | - Huiting Zhang
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, Guangxi University, Nanning, Guangxi 530004, China; College of Animal Science & Technology, Guangxi University, Nanning, Guangxi 530004, China
| | - Jiahao Liu
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, Guangxi University, Nanning, Guangxi 530004, China; College of Animal Science & Technology, Guangxi University, Nanning, Guangxi 530004, China
| | - Hengye Zhang
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, Guangxi University, Nanning, Guangxi 530004, China; College of Animal Science & Technology, Guangxi University, Nanning, Guangxi 530004, China
| | - Kexin Cui
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, Guangxi University, Nanning, Guangxi 530004, China; College of Animal Science & Technology, Guangxi University, Nanning, Guangxi 530004, China
| | - Kehuan Lu
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, Guangxi University, Nanning, Guangxi 530004, China; College of Animal Science & Technology, Guangxi University, Nanning, Guangxi 530004, China
| | - Xingwei Liang
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, Guangxi University, Nanning, Guangxi 530004, China; College of Animal Science & Technology, Guangxi University, Nanning, Guangxi 530004, China.
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Wang H, Choe MH, Lee IW, Namgoong S, Kim JS, Kim NH, Oh JS. CIP2A acts as a scaffold for CEP192-mediated microtubule organizing center assembly by recruiting Plk1 and aurora A during meiotic maturation. Development 2017; 144:3829-3839. [PMID: 28935709 DOI: 10.1242/dev.158584] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2017] [Accepted: 09/06/2017] [Indexed: 12/16/2023]
Abstract
In somatic cells spindle microtubules are nucleated from centrosomes that act as major microtubule organizing centers (MTOCs), whereas oocytes form meiotic spindles by assembling multiple acentriolar MTOCs without canonical centrosomes. Aurora A and Plk1 are required for these events, but the underlying mechanisms remain largely unknown. Here we show that CIP2A regulates MTOC organization by recruiting aurora A and Plk1 at spindle poles during meiotic maturation. CIP2A colocalized with pericentrin at spindle poles with a few distinct cytoplasmic foci. Although CIP2A has been identified as an endogenous inhibitor of protein phosphatase 2A (PP2A), overexpression of CIP2A had no effect on meiotic maturation. Depletion of CIP2A perturbed normal spindle organization and chromosome alignment by impairing MTOC organization. Importantly, CIP2A was reciprocally associated with CEP192, promoting recruitment of aurora A and Plk1 at MTOCs. CIP2A was phosphorylated by Plk1 at S904, which targets CIP2A to MTOCs and facilitates MTOC organization with CEP192. Our results suggest that CIP2A acts as a scaffold for CEP192-mediated MTOC assembly by recruiting Plk1 and aurora A during meiotic maturation in mouse oocytes.
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Affiliation(s)
- HaiYang Wang
- Department of Animal Sciences, Chungbuk National University, Cheongju 28644, Korea
| | - Min Ho Choe
- Division of Radiation Cancer Research, Korea Institute of Radiological and Medical Sciences, Seoul 01812, Korea
- Department of Life Sciences and Biotechnology, College of Life Science and Biotechnology, Korea University, Seoul 02841, Korea
| | - In-Won Lee
- Department of Animal Sciences, Chungbuk National University, Cheongju 28644, Korea
| | - Suk Namgoong
- Department of Animal Sciences, Chungbuk National University, Cheongju 28644, Korea
| | - Jae-Sung Kim
- Division of Radiation Cancer Research, Korea Institute of Radiological and Medical Sciences, Seoul 01812, Korea
| | - Nam-Hyung Kim
- Department of Animal Sciences, Chungbuk National University, Cheongju 28644, Korea
| | - Jeong Su Oh
- Department of Genetic Engineering, College of Biotechnology and Bioengineering, Sungkyunkwan University, Suwon 16419, Korea
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Huang CJ, Yuan YF, Wu D, Khan FA, Jiao XF, Huo LJ. The cohesion stabilizer sororin favors DNA repair and chromosome segregation during mouse oocyte meiosis. In Vitro Cell Dev Biol Anim 2017; 53:258-264. [PMID: 27826797 DOI: 10.1007/s11626-016-0107-0] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2016] [Accepted: 10/11/2016] [Indexed: 12/11/2022]
Abstract
Maintenance and timely termination of cohesion on chromosomes ensures accurate chromosome segregation to guard against aneuploidy in mammalian oocytes and subsequent chromosomally abnormal pregnancies. Sororin, a cohesion stabilizer whose relevance in antagonizing the anti-cohesive property of Wings-apart like protein (Wapl), has been characterized in mitosis; however, the role of Sororin remains unclear during mammalian oocyte meiosis. Here, we show that Sororin is required for DNA damage repair and cohesion maintenance on chromosomes, and consequently, for mouse oocyte meiotic program. Sororin is constantly expressed throughout meiosis and accumulates on chromatins at germinal vesicle (GV) stage/G2 phase. It localizes onto centromeres from germinal vesicle breakdown (GVBD) to metaphase II stage. Inactivation of Sororin compromises the GVBD and first polar body extrusion (PBE). Furthermore, Sororin inactivation induces DNA damage indicated by positive γH2AX foci in GV oocytes and precocious chromatin segregation in MII oocytes. Finally, our data indicate that PlK1 and MPF dissociate Sororin from chromosome arms without affecting its centromeric localization. Our results define Sororin as a determinant during mouse oocyte meiotic maturation by favoring DNA damage repair and chromosome separation, and thereby, maintaining the genome stability and generating haploid gametes.
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Affiliation(s)
- Chun-Jie Huang
- College of Animal Science and Technology, Key Laboratory of Animal Genetics, Breeding and Reproduction of Ministry Education, Huazhong Agricultural University, Wuhan, China
| | - Yi-Feng Yuan
- Department of Gynecology and Obstetrics, Peking University Third University, Beijing, China
| | - Di Wu
- College of Animal Science and Technology, Key Laboratory of Animal Genetics, Breeding and Reproduction of Ministry Education, Huazhong Agricultural University, Wuhan, China
| | - Faheem Ahmed Khan
- College of Animal Science and Technology, Key Laboratory of Animal Genetics, Breeding and Reproduction of Ministry Education, Huazhong Agricultural University, Wuhan, China
| | - Xiao-Fei Jiao
- College of Animal Science and Technology, Key Laboratory of Animal Genetics, Breeding and Reproduction of Ministry Education, Huazhong Agricultural University, Wuhan, China
| | - Li-Jun Huo
- College of Animal Science and Technology, Key Laboratory of Animal Genetics, Breeding and Reproduction of Ministry Education, Huazhong Agricultural University, Wuhan, China.
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Wang J, Li J, Santana-Santos L, Shuda M, Sobol RW, Van Houten B, Qian W. A novel strategy for targeted killing of tumor cells: Induction of multipolar acentrosomal mitotic spindles with a quinazolinone derivative mdivi-1. Mol Oncol 2014; 9:488-502. [PMID: 25458053 DOI: 10.1016/j.molonc.2014.10.002] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2014] [Revised: 10/07/2014] [Accepted: 10/08/2014] [Indexed: 01/05/2023] Open
Abstract
Traditional antimitotic drugs for cancer chemotherapy often have undesired toxicities to healthy tissues, limiting their clinical application. Developing novel agents that specifically target tumor cell mitosis is needed to minimize the toxicity and improve the efficacy of this class of anticancer drugs. We discovered that mdivi-1 (mitochondrial division inhibitor-1), which was originally reported as an inhibitor of mitochondrial fission protein Drp1, specifically disrupts M phase cell cycle progression only in human tumor cells, but not in non-transformed fibroblasts or epithelial cells. The antimitotic effect of mdivi-1 is Drp1 independent, as mdivi-1 induces M phase abnormalities in both Drp1 wild-type and Drp1 knockout SV40-immortalized/transformed MEF cells. We also identified that the tumor transformation process required for the antimitotic effect of mdivi-1 is downstream of SV40 large T and small t antigens, but not hTERT-mediated immortalization. Mdivi-1 induces multipolar mitotic spindles in tumor cells regardless of their centrosome numbers. Acentrosomal spindle poles, which do not contain the bona-fide centrosome components γ-tubulin and centrin-2, were found to contribute to the spindle multipolarity induced by mdivi-1. Gene expression profiling revealed that the genes involved in oocyte meiosis and assembly of acentrosomal microtubules are highly expressed in tumor cells. We further identified that tumor cells have enhanced activity in the nucleation and assembly of acentrosomal kinetochore-attaching microtubules. Mdivi-1 inhibited the integration of acentrosomal microtubule-organizing centers into centrosomal asters, resulting in the development of acentrosomal mitotic spindles preferentially in tumor cells. The formation of multipolar acentrosomal spindles leads to gross genome instability and Bax/Bak-dependent apoptosis. Taken together, our studies indicate that inducing multipolar spindles composing of acentrosomal poles in mitosis could achieve tumor-specific antimitotic effect, and mdivi-1 thus represents a novel class of compounds as acentrosomal spindle inducers (ASI).
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Affiliation(s)
- Jingnan Wang
- Tsinghua University School of Medicine, Tsinghua University, Haidian District, Beijing 100084, China
| | - Jianfeng Li
- Department of Pharmacology & Chemical Biology, University of Pittsburgh School of Medicine and Hillman Cancer Center, University of Pittsburgh Cancer Institute, Pittsburgh, PA 15213, USA
| | - Lucas Santana-Santos
- Biomedical Informatics, and Computational and Systems Biology, University of Pittsburgh School of Medicine, Pittsburgh, PA 15213, USA
| | - Masahiro Shuda
- Molecular Virology Program, University of Pittsburgh Cancer Institute, Pittsburgh, PA 15213, USA
| | - Robert W Sobol
- Department of Pharmacology & Chemical Biology, University of Pittsburgh School of Medicine and Hillman Cancer Center, University of Pittsburgh Cancer Institute, Pittsburgh, PA 15213, USA; Department of Human Genetics, University of Pittsburgh Graduate School of Public Health, Pittsburgh, PA 15213, USA
| | - Bennett Van Houten
- Department of Pharmacology & Chemical Biology, University of Pittsburgh School of Medicine and Hillman Cancer Center, University of Pittsburgh Cancer Institute, Pittsburgh, PA 15213, USA.
| | - Wei Qian
- Department of Pharmacology & Chemical Biology, University of Pittsburgh School of Medicine and Hillman Cancer Center, University of Pittsburgh Cancer Institute, Pittsburgh, PA 15213, USA.
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