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Xiao W, Akao S, Okamoto R, Otsuki J. The formation of aggregated chromatin/chromosomes in mouse oocytes treated with high concentration of IBMX as a model for a chromosome transfer in human. Syst Biol Reprod Med 2024; 70:195-203. [PMID: 38972054 DOI: 10.1080/19396368.2024.2368116] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/25/2024] [Accepted: 06/10/2024] [Indexed: 07/09/2024]
Abstract
The presence of cyclic adenosine monophosphate (cAMP) has been considered to be a fundamental factor in ensuring meiotic arrest prior to ovulation. cAMP is regarded as a key molecule in the regulation of oocyte maturation. However, it has been reported that increased levels of intracellular cAMP can result in abnormal cytokinesis, with some MI oocytes leading to symmetrically cleaved 2-cell MII oocytes. Consequently, we aimed to investigate the effects of elevated intracellular cAMP levels on abnormal cytokinesis and oocyte maturation during the meiosis of mouse oocytes. This study found that a high concentration of isobutylmethylxanthine (IBMX) also caused chromatin/chromosomes aggregation (AC) after the first meiosis. The rates of AC increased the greater the concentration of IBMX. In addition, AC formation was found to be reversible, showing that the re-formation of the spindle chromosome complex was possible after the IBMX was removed. In human oocytes, the chromosomes aggregate after the germinal vesicle breakdown and following the first and second polar body extrusions (the AC phase), while mouse oocytes do not have this AC phase. The results of our current study may indicate that the AC phase in human oocytes could be related to elevated levels of intracytoplasmic cAMP.
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Affiliation(s)
- Wei Xiao
- Graduate School of Environmental, Life, Natural Science and Technology, Okayama University, Kita, Okayama, Japan
| | - Sakura Akao
- Faculty of Agriculture, Department of Animal Sciences, Okayama University, Kita, Okayama, Japan
| | - Ryota Okamoto
- Department of Obstetrics and Gynecology, Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University, Kita, Okayama, Japan
| | - Junko Otsuki
- Graduate School of Environmental, Life, Natural Science and Technology, Okayama University, Kita, Okayama, Japan
- Assisted Reproductive Technology Center, Okayama University, Kita, Okayama, Japan
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Bypassing Mendel's First Law: Transmission Ratio Distortion in Mammals. Int J Mol Sci 2023; 24:ijms24021600. [PMID: 36675116 PMCID: PMC9863905 DOI: 10.3390/ijms24021600] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2022] [Revised: 01/10/2023] [Accepted: 01/11/2023] [Indexed: 01/15/2023] Open
Abstract
Mendel's law of segregation states that the two alleles at a diploid locus should be transmitted equally to the progeny. A genetic segregation distortion, also referred to as transmission ratio distortion (TRD), is a statistically significant deviation from this rule. TRD has been observed in several mammal species and may be due to different biological mechanisms occurring at diverse time points ranging from gamete formation to lethality at post-natal stages. In this review, we describe examples of TRD and their possible mechanisms in mammals based on current knowledge. We first focus on the differences between TRD in male and female gametogenesis in the house mouse, in which some of the most well studied TRD systems have been characterized. We then describe known TRD in other mammals, with a special focus on the farmed species and in the peculiar common shrew species. Finally, we discuss TRD in human diseases. Thus far, to our knowledge, this is the first time that such description is proposed. This review will help better comprehend the processes involved in TRD. A better understanding of these molecular mechanisms will imply a better comprehension of their impact on fertility and on genome evolution. In turn, this should allow for better genetic counseling and lead to better care for human families.
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Chen Z, Wang J, Ma J, Li S, Huo S, Yang Y, Zhaxi Y, Zhao Y, Zhang D. Transcriptome and proteome analysis of pregnancy and postpartum anoestrus ovaries in yak. J Vet Sci 2022. [DOI: 10.4142/jvs.2022.23.e3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Affiliation(s)
- Zhou Chen
- College of Life Science and Engineering, Northwest Minzu University, Lanzhou 730030, China
| | - Jine Wang
- College of Life Science and Engineering, Northwest Minzu University, Lanzhou 730030, China
| | - Junyuan Ma
- College of Life Science and Engineering, Northwest Minzu University, Lanzhou 730030, China
| | - Shuyuan Li
- College of Life Science and Engineering, Northwest Minzu University, Lanzhou 730030, China
| | - Shengdong Huo
- College of Life Science and Engineering, Northwest Minzu University, Lanzhou 730030, China
| | - Yanmei Yang
- College of Life Science and Engineering, Northwest Minzu University, Lanzhou 730030, China
| | - Yingpai Zhaxi
- College of Life Science and Engineering, Northwest Minzu University, Lanzhou 730030, China
| | - Yongqing Zhao
- College of Life Science and Engineering, Northwest Minzu University, Lanzhou 730030, China
| | - Derong Zhang
- College of Life Science and Engineering, Northwest Minzu University, Lanzhou 730030, China
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Chen Z, Wang J, Ma J, Li S, Huo S, Yang Y, Zhaxi Y, Zhao Y, Zhang D. Transcriptome and proteome analysis of pregnancy and postpartum anoestrus ovaries in yak. J Vet Sci 2022; 23:e3. [PMID: 35088950 PMCID: PMC8799938 DOI: 10.4142/jvs.21195] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2021] [Revised: 09/10/2021] [Accepted: 09/25/2021] [Indexed: 11/20/2022] Open
Affiliation(s)
- Zhou Chen
- College of Life Science and Engineering, Northwest Minzu University, Lanzhou 730030, China
| | - Jine Wang
- College of Life Science and Engineering, Northwest Minzu University, Lanzhou 730030, China
| | - Junyuan Ma
- College of Life Science and Engineering, Northwest Minzu University, Lanzhou 730030, China
| | - Shuyuan Li
- College of Life Science and Engineering, Northwest Minzu University, Lanzhou 730030, China
| | - Shengdong Huo
- College of Life Science and Engineering, Northwest Minzu University, Lanzhou 730030, China
| | - Yanmei Yang
- College of Life Science and Engineering, Northwest Minzu University, Lanzhou 730030, China
| | - Yingpai Zhaxi
- College of Life Science and Engineering, Northwest Minzu University, Lanzhou 730030, China
| | - Yongqing Zhao
- College of Life Science and Engineering, Northwest Minzu University, Lanzhou 730030, China
| | - Derong Zhang
- College of Life Science and Engineering, Northwest Minzu University, Lanzhou 730030, China
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Snanoudj S, Molin A, Colson C, Coudray N, Paulien S, Mittre H, Gérard M, Schaefer E, Goldenberg A, Bacchetta J, Odent S, Naudion S, Demeer B, Faivre L, Gruchy N, Kottler ML, Richard N. Maternal Transmission Ratio Distortion of GNAS Loss-of-Function Mutations. J Bone Miner Res 2020; 35:913-919. [PMID: 31886927 DOI: 10.1002/jbmr.3948] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/28/2019] [Revised: 12/09/2019] [Accepted: 12/14/2019] [Indexed: 12/14/2022]
Abstract
Pseudohypoparathyroidism type 1A (PHP1A) and pseudopseudohypoparathyroidism (PPHP) are two rare autosomal dominant disorders caused by loss-of-function mutations in the imprinted Guanine Nucleotide Binding Protein, Alpha Stimulating Activity (GNAS) gene, coding Gs α. PHP1A is caused by mutations in the maternal allele and results in Albright's hereditary osteodystrophy (AHO) and hormonal resistance, mainly to the parathormone (PTH), whereas PPHP, with AHO features and no hormonal resistance, is linked to mutations in the paternal allele. This study sought to investigate parental transmission of GNAS mutations. We conducted a retrospective study in a population of 204 families with 361 patients harboring GNAS mutations. To prevent ascertainment bias toward a higher proportion of affected children due to the way in which data were collected, we excluded from transmission analysis all probands in the ascertained sibships. After bias correction, the distribution ratio of the mutated alleles was calculated from the observed genotypes of the offspring of nuclear families and was compared to the expected ratio of 50% according to Mendelian inheritance (one-sample Z-test). Sex ratio, phenotype of the transmitting parent, and transmission depending on the severity of the mutation were also analyzed. Transmission analysis was performed in 114 nuclear families and included 250 descendants. The fertility rates were similar between male and female patients. We showed an excess of transmission from mother to offspring of mutated alleles (59%, p = .022), which was greater when the mutations were severe (61.7%, p = .023). Similarly, an excess of transmission was found when the mother had a PHP1A phenotype (64.7%, p = .036). By contrast, a Mendelian distribution was observed when the mutations were paternally inherited. Higher numbers of females within the carriers, but not in noncarriers, were also observed. The mother-specific transmission ratio distortion (TRD) and the sex-ratio imbalance associated to PHP1A point to a role of Gs α in oocyte biology or embryogenesis, with implications for genetic counseling. © 2019 American Society for Bone and Mineral Research.
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Affiliation(s)
- Sarah Snanoudj
- Normandie Université, UNICAEN, CHU de Caen Normandie, Department of Genetics, Reference Center for Rare Diseases of Calcium and Phosphorus Metabolism, EA7450 BioTARGen, Caen, France
| | - Arnaud Molin
- Normandie Université, UNICAEN, CHU de Caen Normandie, Department of Genetics, Reference Center for Rare Diseases of Calcium and Phosphorus Metabolism, EA7450 BioTARGen, Caen, France
| | - Cindy Colson
- Normandie Université, UNICAEN, CHU de Caen Normandie, Department of Genetics, Reference Center for Rare Diseases of Calcium and Phosphorus Metabolism, EA7450 BioTARGen, Caen, France
| | - Nadia Coudray
- Normandie Université, UNICAEN, CHU de Caen Normandie, Department of Genetics, Reference Center for Rare Diseases of Calcium and Phosphorus Metabolism, EA7450 BioTARGen, Caen, France
| | - Sylvie Paulien
- Normandie Université, UNICAEN, CHU de Caen Normandie, Department of Genetics, Reference Center for Rare Diseases of Calcium and Phosphorus Metabolism, EA7450 BioTARGen, Caen, France
| | - Hervé Mittre
- Normandie Université, UNICAEN, CHU de Caen Normandie, Department of Genetics, Reference Center for Rare Diseases of Calcium and Phosphorus Metabolism, EA7450 BioTARGen, Caen, France
| | - Marion Gérard
- Normandie Université, UNICAEN, CHU de Caen Normandie, Department of Genetics, Reference Center for Rare Diseases of Calcium and Phosphorus Metabolism, EA7450 BioTARGen, Caen, France
| | - Elise Schaefer
- Department of Genetics, CHU de Strasbourg, Strasbourg, France
| | | | - Justine Bacchetta
- Department of Pediatric Nephrology, Rheumatology and Dermatology, CHU de Lyon, Bron, France
| | - Sylvie Odent
- Department of Genetics, CHU de Rennes, Rennes, France
| | - Sophie Naudion
- Department of Genetics, CHU de Bordeaux, Bordeaux, France
| | | | | | - Nicolas Gruchy
- Normandie Université, UNICAEN, CHU de Caen Normandie, Department of Genetics, Reference Center for Rare Diseases of Calcium and Phosphorus Metabolism, EA7450 BioTARGen, Caen, France
| | - Marie-Laure Kottler
- Normandie Université, UNICAEN, CHU de Caen Normandie, Department of Genetics, Reference Center for Rare Diseases of Calcium and Phosphorus Metabolism, EA7450 BioTARGen, Caen, France
| | - Nicolas Richard
- Normandie Université, UNICAEN, CHU de Caen Normandie, Department of Genetics, Reference Center for Rare Diseases of Calcium and Phosphorus Metabolism, EA7450 BioTARGen, Caen, France
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Wu XC, Han Z, Hao X, Zhao YT, Zhou CJ, Wen X, Liang CG. Combined use of dbcAMP and IBMX minimizes the damage induced by a long-term artificial meiotic arrest in mouse germinal vesicle oocytes. Mol Reprod Dev 2020; 87:262-273. [PMID: 31943463 DOI: 10.1002/mrd.23315] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2019] [Accepted: 12/29/2019] [Indexed: 11/11/2022]
Abstract
Phosphodiesterase (PDE)-mediated reduction of cyclic adenosine monophosphate (cAMP) activity can initiate germinal vesicle (GV) breakdown in mammalian oocytes. It is crucial to maintain oocytes at the GV stage for a long period to analyze meiotic resumption in vitro. Meiotic resumption can be reversibly inhibited in isolated oocytes by cAMP modulator forskolin, cAMP analog dibutyryl cAMP (dbcAMP), or PDE inhibitors, milrinone (Mil), Cilostazol (CLZ), and 3-isobutyl-1-methylxanthine (IBMX). However, these chemicals negatively affect oocyte development and maturation when used independently. Here, we used ICR mice to develop a model that could maintain GV-stage arrest with minimal toxic effects on subsequent oocyte and embryonic development. We identified optimal concentrations of forskolin, dbcAMP, Mil, CLZ, IBMX, and their combinations for inhibiting oocyte meiotic resumption. Adverse effects were assessed according to subsequent development potential, including meiotic resumption after washout, first polar body extrusion, early apoptosis, double-strand DNA breaks, mitochondrial distribution, adenosine triphosphate levels, and embryonic development. Incubation with a combination of 50.0 μM dbcAMP and 10.0 μM IBMX efficiently inhibited meiotic resumption in GV-stage oocytes, with low toxicity on subsequent oocyte maturation and embryonic development. This work proposes a novel method with reduced toxicity to effectively arrest and maintain mouse oocytes at the GV stage.
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Affiliation(s)
- Xue-Chen Wu
- State Key Laboratory of Reproductive Regulation & Breeding of Grassland Livestock, School of Life Sciences, Inner Mongolia University, Hohhot, Inner Mongolia, China
| | - Zhe Han
- State Key Laboratory of Reproductive Regulation & Breeding of Grassland Livestock, School of Life Sciences, Inner Mongolia University, Hohhot, Inner Mongolia, China
| | - Xin Hao
- State Key Laboratory of Reproductive Regulation & Breeding of Grassland Livestock, School of Life Sciences, Inner Mongolia University, Hohhot, Inner Mongolia, China
| | - Yi-Tong Zhao
- State Key Laboratory of Reproductive Regulation & Breeding of Grassland Livestock, School of Life Sciences, Inner Mongolia University, Hohhot, Inner Mongolia, China
| | - Cheng-Jie Zhou
- State Key Laboratory of Reproductive Regulation & Breeding of Grassland Livestock, School of Life Sciences, Inner Mongolia University, Hohhot, Inner Mongolia, China
| | - Xin Wen
- State Key Laboratory of Reproductive Regulation & Breeding of Grassland Livestock, School of Life Sciences, Inner Mongolia University, Hohhot, Inner Mongolia, China
| | - Cheng-Guang Liang
- State Key Laboratory of Reproductive Regulation & Breeding of Grassland Livestock, School of Life Sciences, Inner Mongolia University, Hohhot, Inner Mongolia, China
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Liu L, Li S, Li H, Yu D, Li C, Li G, Cao Y, Feng C, Deng X. Protein kinase Cδ (PKCδ) involved in the regulation of pAkt1 (Ser473) on the release of mouse oocytes from diplotene arrest. Cell Biochem Funct 2018; 36:221-227. [PMID: 29774951 DOI: 10.1002/cbf.3334] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2018] [Revised: 03/21/2018] [Accepted: 04/23/2018] [Indexed: 12/12/2022]
Affiliation(s)
- Lingling Liu
- Department of Physiology; Basic Medical Scientific Research College, CMU; Shenyang PR China
- Central Laboratory of the Fourth Affiliated Hospital; China Medical University (CMU); Shenyang PR China
| | - Sen Li
- Department of Neurology; the Fourth Affiliated Hospital, CMU; Shenyang PR China
| | - Hanwen Li
- Department of Anorectum; the Fourth Affiliated Hospital, CMU; Shenyang PR China
| | - Dahai Yu
- IVF Center; Affiliated Shengjing Hospital, CMU; Shenyang PR China
| | - Chunyu Li
- Department of Anorectum; the Fourth Affiliated Hospital, CMU; Shenyang PR China
| | - Gensong Li
- Department of Physiology; Basic Medical Scientific Research College, CMU; Shenyang PR China
| | - Yu Cao
- Department of Physiology; Basic Medical Scientific Research College, CMU; Shenyang PR China
| | - Chen Feng
- Department of Biochemistry and Molecular Biology; CMU; Shenyang PR China
| | - Xin Deng
- Department of Physiology; Basic Medical Scientific Research College, CMU; Shenyang PR China
- Central Laboratory of the Fourth Affiliated Hospital; China Medical University (CMU); Shenyang PR China
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Cui C, Ren X, Liu D, Deng X, Qin X, Zhao X, Wang E, Yu B. 14-3-3 epsilon prevents G2/M transition of fertilized mouse eggs by binding with CDC25B. BMC DEVELOPMENTAL BIOLOGY 2014; 14:33. [PMID: 25059436 PMCID: PMC4222595 DOI: 10.1186/s12861-014-0033-x] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/27/2014] [Accepted: 07/14/2014] [Indexed: 12/21/2022]
Abstract
Background The 14-3-3 (YWHA) proteins are highly conserved in higher eukaryotes, participate in various cellular signaling pathways including cell cycle regulation, development and growth. Our previous studies demonstrated that 14-3-3ε (YWHAE) is responsible for maintaining prophase | arrest in mouse oocyte. However, roles of 14-3-3ε in the mitosis of fertilized mouse eggs have remained unclear. Here, we showed that 14-3-3ε interacts and cooperates with CDC25B phosphorylated at Ser321 regulating G2/M transition of mitotic progress of fertilized mouse eggs. Results Disruption of 14-3-3ε expression by RNAi prevented normal G2/M transition by inhibition of MPF activity and leaded to the translocation of CDC25B into the nucleus from the cytoplasm. Overexpression of 14-3-3ε-WT and unphosphorylatable CDC25B mutant (CDC25B-S321A) induced mitotic resumption in dbcAMP-arrested eggs. In addition, we examined endogenous and exogenous distribution of 14-3-3ε and CDC25B. Endogenous 14-3-3ε and CDC25B were co-localized primarily in the cytoplasm at the G1, S, early G2 and M phases whereas CDC25B was found to accumulate in the nucleus at the late G2 phase. Upon coexpression with RFP–14-3-3ε, GFP–CDC25B–WT and GFP–CDC25B–S321A were predominantly cytoplasmic at early G2 phase and then GFP–CDC25B–S321A moved to the nucleus whereas CDC25B-WT signals were observed in the cytoplasm without nucleus accumulation at late G2 phase at presence of dbcAMP. Conclusions Our data indicate that 14-3-3ε is required for the mitotic entry in the fertilized mouse eggs. 14-3-3ε is primarily responsible for sequestering the CDC25B in cytoplasm and 14-3-3ε binding to CDC25B-S321 phosphorylated by PKA induces mitotic arrest at one-cell stage by inactivation of MPF in fertilized mouse eggs.
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