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Wiltshire A, Schaal R, Wang F, Tsou T, McKerrow W, Keefe D. Vitrification with Dimethyl Sulfoxide Induces Transcriptomic Alteration of Gene and Transposable Element Expression in Immature Human Oocytes. Genes (Basel) 2023; 14:1232. [PMID: 37372413 DOI: 10.3390/genes14061232] [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: 04/25/2023] [Revised: 05/24/2023] [Accepted: 06/02/2023] [Indexed: 06/29/2023] Open
Abstract
Despite substantial advancements in the field of cryobiology, oocyte and embryo cryopreservation still compromise developmental competence. Furthermore, dimethyl sulfoxide (DMSO), one of the most commonly used cryoprotectants, has been found to exert potent effects on the epigenetic landscape of cultured human cells, as well as mouse oocytes and embryos. Little is known about its impact on human oocytes. Additionally, few studies investigate the effects of DMSO on transposable elements (TE), the control of which is essential for the maintenance of genomic instability. The objective of this study was to investigate the impact of vitrification with DMSO-containing cryoprotectant on the transcriptome, including on TEs, of human oocytes. Twenty-four oocytes at the GV stage were donated by four healthy women undergoing elective oocyte cryopreservation. Oocytes were paired such that half from each patient were vitrified with DMSO-containing cryoprotectant (Vitrified Cohort), while the other half were snap frozen in phosphate buffer, unexposed to DMSO (Non-Vitrified Cohort). All oocytes underwent RNA sequencing via a method with high fidelity for single cell analysis, and which allows for the analysis of TE expression through Switching Mechanism at the 5'-end of the RNA Transcript sequencing 2 (SMARTseq2), followed by functional enrichment analysis. Of the 27,837 genes identified by SMARTseq2, 7331 (26.3%) were differentially expressed (p < 0.05). There was a significant dysregulation of genes involved in chromatin and histone modification. Mitochondrial function, as well as the Wnt, insulin, mTOR, HIPPO, and MAPK signaling pathways were also altered. The expression of TEs was positively correlated with the expression of PIWIL2, DNMT3A, and DNMT3B, and negatively correlated with age. These findings suggest that the current standard process of oocyte vitrification, involving DMSO-containing cryoprotectant, induces significant transcriptome changes, including those involving TEs.
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Affiliation(s)
- Ashley Wiltshire
- Department of Obstetrics and Gynecology, Division of Reproductive Endocrinology and Infertility, New York University Langone Fertility Center, 660 1st Avenue, New York, NY 10016, USA
| | - Renata Schaal
- Department of Obstetrics and Gynecology, Division of Reproductive Endocrinology and Infertility, New York University Langone Fertility Center, 660 1st Avenue, New York, NY 10016, USA
| | - Fang Wang
- Department of Obstetrics and Gynecology, Division of Reproductive Endocrinology and Infertility, New York University Langone Fertility Center, 660 1st Avenue, New York, NY 10016, USA
| | - Tiffany Tsou
- Institute for Systems Genetics, New York University Langone Medical Center, 550 1st Avenue, New York, NY 10016, USA
| | - Wilson McKerrow
- Institute for Systems Genetics, New York University Langone Medical Center, 550 1st Avenue, New York, NY 10016, USA
| | - David Keefe
- Department of Obstetrics and Gynecology, Division of Reproductive Endocrinology and Infertility, New York University Langone Fertility Center, 660 1st Avenue, New York, NY 10016, USA
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Feng J, Soto‐Moreno EJ, Prakash A, Balboula AZ, Qiao H. Adverse PFAS effects on mouse oocyte in vitro maturation are associated with carbon-chain length and inclusion of a sulfonate group. Cell Prolif 2023; 56:e13353. [PMID: 36305033 PMCID: PMC9890540 DOI: 10.1111/cpr.13353] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2022] [Revised: 10/04/2022] [Accepted: 10/09/2022] [Indexed: 02/04/2023] Open
Abstract
OBJECTIVES Per- and polyfluoroalkyl substances (PFAS) are man-made chemicals that are widely used in various products. PFAS are characterized by their fluorinated carbon chains that make them hard to degrade and bioaccumulate in human and animals. Toxicological studies have shown PFAS toxic effects: cytotoxicity, immunotoxicity, neurotoxicity, and reproductive toxicity. However, it is still unclear how the structures of PFAS, such as carbon-chain length and functional groups, determine their reproductive toxicity. METHODS AND RESULTS By using a mouse-oocyte-in-vitro-maturation (IVM) system, we found the toxicity of two major categories of PFAS, perfluoroalkyl carboxylic acid (PFCA) and perfluoroalkyl sulfonic acid (PFSA), is elevated with increasing carbon-chain length and the inclusion of the sulfonate group. Specifically, at 600 μM, perfluorohexanesulfonic acid (PFHxS) and perfluorooctanesulfonic acid (PFOS) reduced the rates of both germinal-vesicle breakdown (GVBD) and polar-body extrusion (PBE) as well as enlarged polar bodies. However, the shorter PFSA, perfluorobutanesulfonic acid (PFBS), and all PFCA did not show similar adverse cytotoxicity. Further, we found that 600 μM PFHxS and PFOS exposure induced excess reactive oxygen species (ROS) and decreased mitochondrial membrane potential (MMP). Cytoskeleton analysis revealed that PFHxS and PFOS exposure induced chromosome misalignment, abnormal F-actin organization, elongated spindle formation, and symmetric division in the treated oocytes. These meiotic defects compromised oocyte developmental competence after parthenogenetic activation. CONCLUSIONS Our study provides new information on the structure-toxicity relationship of PFAS.
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Affiliation(s)
- Jianan Feng
- Department of Comparative BiosciencesUniversity of Illinois at Urbana‐ChampaignChampaignUrbanaUSA
| | | | - Aashna Prakash
- Department of Comparative BiosciencesUniversity of Illinois at Urbana‐ChampaignChampaignUrbanaUSA
| | - Ahmed Z. Balboula
- Division of Animal SciencesUniversity of MissouriMissouriColumbiaUSA
| | - Huanyu Qiao
- Department of Comparative BiosciencesUniversity of Illinois at Urbana‐ChampaignChampaignUrbanaUSA
- Carl R. Woese Institute for Genomic BiologyUniversity of Illinois at Urbana‐ChampaignChampaignUrbanaUSA
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Kim YH, Lee SY, Kim EY, Kim KH, Koong MK, Lee KA. The Antioxidant Auraptene Improves Aged Oocyte Quality and Embryo Development in Mice. Antioxidants (Basel) 2022; 12:antiox12010087. [PMID: 36670949 PMCID: PMC9854793 DOI: 10.3390/antiox12010087] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2022] [Revised: 12/16/2022] [Accepted: 12/28/2022] [Indexed: 12/31/2022] Open
Abstract
Decrease in quality of postovulatory aged oocytes occurs due to oxidative stress and leads to low fertilization and development competence. It is one of the main causes that exerting detrimental effect on the success rate in assisted reproductive technology (ART). Auraptene (AUR), a citrus coumarin, has been reported to possess an antioxidant effects in other tissues. In this study, we aimed to confirm the potential of AUR to delay the oocyte aging process by alleviating oxidative stress. Superovulated mouse oocytes in metaphase of second meiosis (MII) were exposed to 0, 1 or 10 μM AUR for 12 h of in vitro aging. AUR addition to the culture medium recovered abnormal spindle and chromosome morphology and mitigated mitochondrial distribution and mitochondrial membrane potential (ΔΨ) in aged oocytes. AUR-treated aged oocytes also showed suppressed oxidative stress, with lower reactive oxygen species (ROS) levels, higher glutathione (GSH) levels and increased expression of several genes involved in antioxidation. Furthermore, AUR significantly elevated the fertilization and embryo developmental rates. Oocytes aged with 1 μM AUR exhibited morphokinetics that were very similar to those of the control group. Altogether, these data allowed us to conclude that AUR improved the quality of aged oocytes and suggest AUR as an effective clinical supplement candidate to prevent postovulatory aging.
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Affiliation(s)
- Yun-Hee Kim
- Department of Biomedical Science, Institute of Reproductive Medicine, College of Life Science, CHA University, Pangyo-ro 335, Bundang-gu, Seongnam-si 13488, Republic of Korea
| | - Su-Yeon Lee
- Department of Biomedical Science, Institute of Reproductive Medicine, College of Life Science, CHA University, Pangyo-ro 335, Bundang-gu, Seongnam-si 13488, Republic of Korea
| | - Eun-Young Kim
- Department of Biomedical Science, Institute of Reproductive Medicine, College of Life Science, CHA University, Pangyo-ro 335, Bundang-gu, Seongnam-si 13488, Republic of Korea
| | - Kyeoung-Hwa Kim
- Department of Biomedical Science, Institute of Reproductive Medicine, College of Life Science, CHA University, Pangyo-ro 335, Bundang-gu, Seongnam-si 13488, Republic of Korea
| | - Mi-Kyoung Koong
- CHA Fertility Center Daegu Station, Dalgubeol-daero 2095, Jung-gu, Daegu 41936, Republic of Korea
| | - Kyung-Ah Lee
- Department of Biomedical Science, Institute of Reproductive Medicine, College of Life Science, CHA University, Pangyo-ro 335, Bundang-gu, Seongnam-si 13488, Republic of Korea
- Correspondence: ; Tel.: +82-31-881-7135
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Cheng H, Han Y, Zhang J, Zhang S, Zhai Y, An X, Li Q, Duan J, Zhang X, Li Z, Tang B, Shen H. Effects of dimethyl sulfoxide (DMSO) on DNA methylation and histone modification in parthenogenetically activated porcine embryos. Reprod Fertil Dev 2022; 34:598-607. [PMID: 35397781 DOI: 10.1071/rd21083] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2021] [Accepted: 12/20/2021] [Indexed: 12/18/2022] Open
Abstract
Epigenetic mechanisms play an important role in oogenesis and early embryo development in mammals. Dimethyl sulfoxide (DMSO) is frequently used as a solvent in biological studies and as a vehicle for drug therapy. Recent studies suggest that DMSO detrimentally affects porcine embryonic development, yet the mechanism of the process in parthenogenetically activated porcine embryos has not been reported. In this study, we found that treatment of embryos with 1.5% DMSO significantly decreased the cleavage and blastocyst rates, total cell number of blastocysts and the anti-apoptotic gene BCL-2 transcription level; however, the percentage of apoptotic cells and the expression levels of the pro-apoptotic gene BAX were not changed. Treatment with DMSO significantly decreased the expression levels of DNMT1 , DNMT3a , DNMT3b , TET1 , TET2 , TET3 , KMT2C , MLL2 and SETD3 in most of the stages of embryonic development and increased 5-mC signals, while the staining intensity for 5-hmC had no change in porcine preimplantation embryos from 2-cell to the blastocyst stages. Meanwhile, DMSO decreased the level of H3K4me3 during the development of parthenogenetically activated porcine embryos. After treatment with DMSO, expression levels of the pluripotency-related genes POU5F1 and NANOG decreased significantly (P <0.01), whereas the imprinted gene H19 did not change (P >0.05). In conclusion, these results suggest that DMSO can affect genome-wide DNA methylation and histone modification by regulating the expression of epigenetic modification enzymes, and DMSO also influences the expression level of pluripotent genes. These dysregulations lead to defects in embryonic development.
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Affiliation(s)
- Hui Cheng
- College of Veterinary Medicine, Jilin University, Changchun, Jilin 130062, China
| | - Yu Han
- College of Veterinary Medicine, Jilin University, Changchun, Jilin 130062, China
| | - Jian Zhang
- College of Veterinary Medicine, Jilin University, Changchun, Jilin 130062, China
| | - Sheng Zhang
- Academy of Translational Medicine, First Hospital, Jilin University, Changchun, Jilin 130021, China
| | - Yanhui Zhai
- College of Veterinary Medicine, Jilin University, Changchun, Jilin 130062, China
| | - Xinglan An
- Academy of Translational Medicine, First Hospital, Jilin University, Changchun, Jilin 130021, China
| | - Qi Li
- Academy of Translational Medicine, First Hospital, Jilin University, Changchun, Jilin 130021, China
| | - Jiahui Duan
- College of Veterinary Medicine, Jilin University, Changchun, Jilin 130062, China
| | - Xueming Zhang
- College of Veterinary Medicine, Jilin University, Changchun, Jilin 130062, China
| | - Ziyi Li
- Academy of Translational Medicine, First Hospital, Jilin University, Changchun, Jilin 130021, China
| | - Bo Tang
- College of Veterinary Medicine, Jilin University, Changchun, Jilin 130062, China
| | - Haiqing Shen
- College of Veterinary Medicine, Jilin University, Changchun, Jilin 130062, China
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Cantatore C, George JS, Depalo R, D'Amato G, Moravek M, Smith GD. Mouse oocyte vitrification with and without dimethyl sulfoxide: influence on cryo-survival, development, and maternal imprinted gene expression. J Assist Reprod Genet 2021; 38:2129-2138. [PMID: 34021463 DOI: 10.1007/s10815-021-02221-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2020] [Accepted: 05/04/2021] [Indexed: 10/21/2022] Open
Abstract
PURPOSE Oocytes and embryos can be vitrified with and without dimethyl sulfoxide (DMSO). Objectives were to compare no vitrification (No-Vitr), vitrification with DMSO (Vitr + DMSO), and vitrification without DMSO (Vitr - DMSO) on fresh/warmed oocyte survival, induced parthenogenetic activation, parthenogenetic embryo development, and embryonic maternal imprinted gene expression. METHODS In this prospective controlled laboratory study, mature B6C3F1 female mouse metaphase II oocytes were treated as: i) No-Vitr, ii) Vitr + DMSO/warmed, and iii) Vitr - DMSO/warmed with subsequent parthenogenetic activation and culture to the blastocyst stage. Oocyte cryo-survival, parthenogenetic activation and embryo development, parthenogenetic embryo maternal imprinted gene expression were outcome measures. RESULTS Oocyte cryo-survival was significantly improved in Vitr + DMSO versus Vitr - DMSO at initial warming and 2 h after warming. Induced parthenogenetic activation was similar between all three intervention groups. While early preimplantation parthenogenetic embryo development was similar between control, Vitr + DMSO, Vitr - DMSO oocytes, the development to blastocysts was significantly inferior in the Vitr - DMSO oocytes group compared to the control and Vitr + DMSO oocyte groups. Finally, maternal imprinted gene expression was similar between intervention groups at both the 2-cell and blastocyst parthenogenetic embryo stage. CONCLUSION(S) Inclusion of DMSO in oocyte vitrification solutions improved cryo-survival and developmental potential of parthenogenetic embryos to the blastocyst stage without significantly altering maternal imprinted gene expression.
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Affiliation(s)
- Clementina Cantatore
- Department of Maternal and Child Health, Reproductive and IVF Unit, Asl Bari, Conversano (BA), Italy
| | - Jenny S George
- Department of Ob/Gyn, University of Michigan, 6422A Medical Sciences I, 1301 E. Catherine Street, SPC5617, Ann Arbor, MI, 48109-056171500, USA
| | - Raffaella Depalo
- Institutional BioBank, Experimental Oncology and Biobank Management Unit, IRCCS Istituto Tumori "Giovanni Paolo II", Bari, Italy
| | - Giuseppe D'Amato
- Department of Maternal and Child Health, Reproductive and IVF Unit, Asl Bari, Conversano (BA), Italy
| | - Molly Moravek
- Department of Ob/Gyn, University of Michigan, 6422A Medical Sciences I, 1301 E. Catherine Street, SPC5617, Ann Arbor, MI, 48109-056171500, USA
| | - Gary D Smith
- Department of Ob/Gyn, University of Michigan, 6422A Medical Sciences I, 1301 E. Catherine Street, SPC5617, Ann Arbor, MI, 48109-056171500, USA. .,Departments of Physiology and Urology and Reproductive Sciences Program, University of Michigan, 1500 E. Medical Center Dr, Ann Arbor, MI, 48109, USA.
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6
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Gulevskyy AK, Akhatova YS, Nikolchenko AY. Cryoprotective agents affect amino acids incorporation into total proteins in cells of lymphoid organs and liver of experimental animals. UKRAINIAN BIOCHEMICAL JOURNAL 2020. [DOI: 10.15407/ubj92.05.041] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
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7
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Gulevskyy OK. Influence of cryoprotective agents on protein biosynthesis in Krebs-2 ascites carcinoma and wheat germ cell-free systems. Cryobiology 2020; 96:55-60. [PMID: 32827498 DOI: 10.1016/j.cryobiol.2020.08.005] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2020] [Revised: 07/08/2020] [Accepted: 08/17/2020] [Indexed: 10/23/2022]
Abstract
Currently, the cell and tissue storage using the cryoprotective agents are quite common, in particular in reproductive technologies. Meanwhile the issue of safety when applying the CPAs remains open, since even in residual amounts after washing, they can affect the functioning of the most critical metabolic processes of a cell, in particular transcription and translation, which can be of great importance for further life and development of organs, tissues, cells. The goal was to study the effect of penetrating cryoprotective agents glycerol, ME2SO, ethylene glycol, and non-penetrating PEG-400 on protein synthesizing activity in cell-free systems of Krebs-2 ascites carcinoma and wheat germ. In this study, we compared the effects of ME2SO, PEG-400, glycerol, and ethylene glycol on protein biosynthesis in cell-free systems according to the incorporation of 14C-amino acids in total proteins. A reversible suppression of protein biosynthesis in Krebs-2 ascites carcinoma cells and wheat germ cell-free systems by CPAs PEG-400, ethylene glycol, glycerol and ME2SO was found. This effect is shown to be stipulated by a direct influence of the studied CPAs on translation processes. ME2SO, glycerol, ethylene glycol and PEG-400 were established to cause the Mg-dependent inhibition of protein biosynthesis in cell-free system of Krebs-2 ascites carcinoma cells in endogenous matrices and wheat germ ones in exogenous matrices. It has been shown that the mechanism of inhibiting action of CPAs on protein biosynthesis in cell-free systems is related to Mg2+-dependent inhibition of tRNA aminoacylation, which when penetrating Me2SO, glycerol and ethylene glycol CPAs are used, has a reversible character, and when PEG-400 being a hardly penetrating CPA is applied it is just partially recovered.
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Affiliation(s)
- Oleksandr K Gulevskyy
- Institute for Problems of Cryobiology and Cryomedicine of the National Academy of Sciences of Ukraine, Kharkiv, Ukraine.
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8
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Verheijen M, Lienhard M, Schrooders Y, Clayton O, Nudischer R, Boerno S, Timmermann B, Selevsek N, Schlapbach R, Gmuender H, Gotta S, Geraedts J, Herwig R, Kleinjans J, Caiment F. DMSO induces drastic changes in human cellular processes and epigenetic landscape in vitro. Sci Rep 2019; 9:4641. [PMID: 30874586 PMCID: PMC6420634 DOI: 10.1038/s41598-019-40660-0] [Citation(s) in RCA: 188] [Impact Index Per Article: 37.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2018] [Accepted: 02/20/2019] [Indexed: 12/16/2022] Open
Abstract
Though clinical trials for medical applications of dimethyl sulfoxide (DMSO) reported toxicity in the 1960s, later, the FDA classified DMSO in the safest solvent category. DMSO became widely used in many biomedical fields and biological effects were overlooked. Meanwhile, biomedical science has evolved towards sensitive high-throughput techniques and new research areas, including epigenomics and microRNAs. Considering its wide use, especially for cryopreservation and in vitro assays, we evaluated biological effect of DMSO using these technological innovations. We exposed 3D cardiac and hepatic microtissues to medium with or without 0.1% DMSO and analyzed the transcriptome, proteome and DNA methylation profiles. In both tissue types, transcriptome analysis detected >2000 differentially expressed genes affecting similar biological processes, thereby indicating consistent cross-organ actions of DMSO. Furthermore, microRNA analysis revealed large-scale deregulations of cardiac microRNAs and smaller, though still massive, effects in hepatic microtissues. Genome-wide methylation patterns also revealed tissue-specificity. While hepatic microtissues demonstrated non-significant changes, findings from cardiac microtissues suggested disruption of DNA methylation mechanisms leading to genome-wide changes. The extreme changes in microRNAs and alterations in the epigenetic landscape indicate that DMSO is not inert. Its use should be reconsidered, especially for cryopreservation of embryos and oocytes, since it may impact embryonic development.
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Affiliation(s)
- M Verheijen
- Toxicogenomics, Maastricht University, Maastricht, Netherlands
| | - M Lienhard
- Computational Molecular Biology, Max-Planck-Institute for Molecular Genetics, Berlin, Germany
| | - Y Schrooders
- Toxicogenomics, Maastricht University, Maastricht, Netherlands
| | - O Clayton
- F. Hoffmann-La Roche AG, Basel, Switzerland
| | | | - S Boerno
- Computational Molecular Biology, Max-Planck-Institute for Molecular Genetics, Berlin, Germany
| | - B Timmermann
- Computational Molecular Biology, Max-Planck-Institute for Molecular Genetics, Berlin, Germany
| | - N Selevsek
- Functional Genomics Center Zurich, ETH Zurich and University of Zurich, Zurich, Switzerland
| | - R Schlapbach
- Functional Genomics Center Zurich, ETH Zurich and University of Zurich, Zurich, Switzerland
| | | | - S Gotta
- Genedata AG, Basel, Switzerland
| | - J Geraedts
- Genetics and Cell Biology, Maastricht University, Medical Center, Maastricht, Netherlands
| | - R Herwig
- Computational Molecular Biology, Max-Planck-Institute for Molecular Genetics, Berlin, Germany
| | - J Kleinjans
- Toxicogenomics, Maastricht University, Maastricht, Netherlands
| | - F Caiment
- Toxicogenomics, Maastricht University, Maastricht, Netherlands.
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Liang HX, Lu SS, Yan Z, Kuang YP, Zhu XX, Yan ZG, Du T, Chai WR, Long H, Lyu QF. Andrographolide disrupts meiotic maturation by blocking cytoskeletal reorganisation and decreases the fertilisation potential of mouse oocytes. Reprod Fertil Dev 2018; 29:2336-2344. [PMID: 28420479 DOI: 10.1071/rd16343] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2016] [Accepted: 03/08/2017] [Indexed: 11/23/2022] Open
Abstract
Andrographolide (AG) is a diterpenoid lactone isolated from the stem and leaves of Andrographis paniculata Nees that is used for the effective treatment of infectious diseases in Asian countries. Previous studies have reported adverse effects of AG on female fertility in rodents; however, the underlying mechanisms are unknown. The aim of the present study was to investigate the effects of AG on the IVM of mouse oocytes and their fertilisation potential. Immature oocytes incubated for 6, 14 or 24h in medium containing 5, 10 or 20μM AG showed time- and dose-dependent decreases in maturation rates compared with the control group. Immunostaining revealed that AG exposure disrupted spindle organisation and migration, as well as actin cap formation and cytokinesis. Furthermore, most oocytes exposed to 20μM AG underwent apoptosis, and the few oocytes exposed to 5 or 10μM AG that reached MII exhibited lower fertilisation rates after intracytoplasmic sperm injection. The findings of the present study suggest that AG may disrupt mouse oocyte meiotic maturation by blocking cytoskeletal reorganisation, and may thus have an adverse effect on female fertility.
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Affiliation(s)
- Hong-Xing Liang
- State Key Laboratory for Conservation and Utilisation of Subtropical Agro-bioresources, Guangxi High Education Key Laboratory for Animal Reproduction and Biotechnology, College of Animal Science and Technology, Guangxi University, Nanning, Guangxi 530004, PR China
| | - Sheng-Sheng Lu
- State Key Laboratory for Conservation and Utilisation of Subtropical Agro-bioresources, Guangxi High Education Key Laboratory for Animal Reproduction and Biotechnology, College of Animal Science and Technology, Guangxi University, Nanning, Guangxi 530004, PR China
| | - Zheng Yan
- Department of Assisted Reproduction, Shanghai Ninth People's Hospital Affiliated Shanghai Jiao Tong University School of Medicine, Shanghai 200011, PR China
| | - Yan-Ping Kuang
- Department of Assisted Reproduction, Shanghai Ninth People's Hospital Affiliated Shanghai Jiao Tong University School of Medicine, Shanghai 200011, PR China
| | - Xiang-Xing Zhu
- State Key Laboratory for Conservation and Utilisation of Subtropical Agro-bioresources, Guangxi High Education Key Laboratory for Animal Reproduction and Biotechnology, College of Animal Science and Technology, Guangxi University, Nanning, Guangxi 530004, PR China
| | - Zhi-Guang Yan
- Department of Assisted Reproduction, Shanghai Ninth People's Hospital Affiliated Shanghai Jiao Tong University School of Medicine, Shanghai 200011, PR China
| | - Tong Du
- Department of Assisted Reproduction, Shanghai Ninth People's Hospital Affiliated Shanghai Jiao Tong University School of Medicine, Shanghai 200011, PR China
| | - Wei-Ran Chai
- Department of Assisted Reproduction, Shanghai Ninth People's Hospital Affiliated Shanghai Jiao Tong University School of Medicine, Shanghai 200011, PR China
| | - Hui Long
- Department of Assisted Reproduction, Shanghai Ninth People's Hospital Affiliated Shanghai Jiao Tong University School of Medicine, Shanghai 200011, PR China
| | - Qi-Feng Lyu
- Department of Assisted Reproduction, Shanghai Ninth People's Hospital Affiliated Shanghai Jiao Tong University School of Medicine, Shanghai 200011, PR China
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Kang MH, Das J, Gurunathan S, Park HW, Song H, Park C, Kim JH. The cytotoxic effects of dimethyl sulfoxide in mouse preimplantation embryos: a mechanistic study. Am J Cancer Res 2017; 7:4735-4752. [PMID: 29187900 PMCID: PMC5706096 DOI: 10.7150/thno.21662] [Citation(s) in RCA: 59] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2017] [Accepted: 09/18/2017] [Indexed: 12/29/2022] Open
Abstract
Rationale: Dimethyl sulfoxide (DMSO) is commonly used as a solvent for water-insoluble substances, a vehicle for drug therapy, and a cryoprotectant for cultured cells. DMSO induced embryonic defects and its mechanism of action remains unclear. The rationale is based on the assumption that DMSO supplementation should induce long-term negative effects on both pre- and post-implantation embryo development. Methods: DMSO induced oxidative stress, ER stress, autophagy, mitophagy, signaling responsible genes and proteins were determined by RT-qPCR, Western blotting, immunofluorescence, and confocal microscopy. DMSO induced mitochondrial dysfunction was measured by transmission electron microcopy and JC-1 assay. Apoptosis was estimated using TUNEL and comet assay. Post-implantation embryo developmental capability was estimated by implantation site and fetus numbers. Results: Exposure to DMSO induced an early oxidative stress response within 0.5 to 2 h in 1-cell zygotes by disrupting the balance of pro- and anti-oxidants. Notably, DMSO-treated 2-cell embryos showed increased expression of unfolded protein response genes such as Hspa5, Hsp90b1, Ddit3, Atf4, and Xbp1. As a result, the development of many embryos is arrested at the 2-cell, 4-cell, or morula stages in a dose-dependent manner. Further, DMSO-induced endoplasmic reticulum stress increased mitochondrial Ca2+ levels, induced mitochondrial depolarization/dysfunction, and induced apoptotic cell death via the JNK/ATF2-dependent pathway. Consequently, treatment with DMSO increased the expression of autophagy initiation-, phagophore elongation-, and autophagosome formation-related genes, as well as localization of PINK1/Parkin, which are the main mediators of mitophagy, in mitochondria. Interestingly, DMSO causes cytotoxic effects in preimplantation embryos by inducing extensive mitophagy and autophagy. Especially, DMSO treatment decreased the inner cell mass and trophectoderm cell numbers as well as mRNA expression of B3gnt5 and Wnt3a in developed blastocysts, which decreased the implantation and developmental rates of full-term offspring after being transferred into pseudopregnant mice. Conclusion: These results provide a significant contribution to finding effective protective agents to combat DMSO mediated reproductive toxicity for application in human embryos in the near future.
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Li X, Wang YK, Song ZQ, Du ZQ, Yang CX. Dimethyl Sulfoxide Perturbs Cell Cycle Progression and Spindle Organization in Porcine Meiotic Oocytes. PLoS One 2016; 11:e0158074. [PMID: 27348312 PMCID: PMC4922549 DOI: 10.1371/journal.pone.0158074] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2016] [Accepted: 06/09/2016] [Indexed: 12/01/2022] Open
Abstract
Meiotic maturation of mammalian oocytes is a precisely orchestrated and complex process. Dimethyl sulfoxide (DMSO), a widely used solvent, drug, and cryoprotectant, is capable of disturbing asymmetric cytokinesis of oocyte meiosis in mice. However, in pigs, DMSO’s effect on oocyte meiosis still remains unknown. We aimed to evaluate if DMSO treatment will affect porcine oocyte meiosis and the underlying molecular changes as well. Interestingly, we did not observe the formation of the large first polar body and symmetric division for porcine oocytes treated with DMSO, contrary to findings reported in mice. 3% DMSO treatment could inhibit cumulus expansion, increase nuclear abnormality, disturb spindle organization, decrease reactive oxygen species level, and elevate mitochondrial membrane potential of porcine oocytes. There was no effect on germinal vesicle breakdown rate regardless of DMSO concentration. 3% DMSO treatment did not affect expression of genes involved in spindle organization (Bub1 and Mad2) and apoptosis (NF-κB, Pten, Bcl2, Caspase3 and Caspase9), however, it significantly decreased expression levels of pluripotency genes (Oct4, Sox2 and Lin28) in mature oocytes. Therefore, we demonstrated that disturbed cumulus expansion, chromosome alignment, spindle organization and pluripotency gene expression could be responsible for DMSO-induced porcine oocyte meiotic arrest and the lower capacity of subsequent embryo development. Our results provide new insights on DMSO’s effect on porcine oocyte meiosis and raise safety concerns over DMSO’s usage on female reproduction in both farm animals and humans.
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Affiliation(s)
- Xuan Li
- College of Animal Science and Technology, Northeast Agricultural University, Harbin, 150030, Heilongjiang, China
| | - Yan-Kui Wang
- College of Animal Science and Technology, Northeast Agricultural University, Harbin, 150030, Heilongjiang, China
| | - Zhi-Qiang Song
- College of Animal Science and Technology, Northeast Agricultural University, Harbin, 150030, Heilongjiang, China
| | - Zhi-Qiang Du
- College of Animal Science and Technology, Northeast Agricultural University, Harbin, 150030, Heilongjiang, China
- * E-mail: (CXY); (ZQD)
| | - Cai-Xia Yang
- College of Animal Science and Technology, Northeast Agricultural University, Harbin, 150030, Heilongjiang, China
- * E-mail: (CXY); (ZQD)
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