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Wang T, Peng J, Fan J, Tang N, Hua R, Zhou X, Wang Z, Wang L, Bai Y, Quan X, Wang Z, Zhang L, Luo C, Zhang W, Kang X, Liu J, Li L, Li L. Single-cell multi-omics profiling of human preimplantation embryos identifies cytoskeletal defects during embryonic arrest. Nat Cell Biol 2024; 26:263-277. [PMID: 38238450 DOI: 10.1038/s41556-023-01328-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2023] [Accepted: 12/01/2023] [Indexed: 02/16/2024]
Abstract
Human in vitro fertilized embryos exhibit low developmental capabilities, and the mechanisms that underlie embryonic arrest remain unclear. Here using a single-cell multi-omics sequencing approach, we simultaneously analysed alterations in the transcriptome, chromatin accessibility and the DNA methylome in human embryonic arrest due to unexplained reasons. Arrested embryos displayed transcriptome disorders, including a distorted microtubule cytoskeleton, increased genomic instability and impaired glycolysis, which were coordinated with multiple epigenetic reprogramming defects. We identified Aurora A kinase (AURKA) repression as a cause of embryonic arrest. Mechanistically, arrested embryos induced through AURKA inhibition resembled the reprogramming abnormalities of natural embryonic arrest in terms of the transcriptome, the DNA methylome, chromatin accessibility and H3K4me3 modifications. Mitosis-independent sequential activation of the zygotic genome in arrested embryos showed that YY1 contributed to human major zygotic genome activation. Collectively, our study decodes the reprogramming abnormalities and mechanisms of human embryonic arrest and the key regulators of zygotic genome activation.
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Affiliation(s)
- Teng Wang
- Guangdong Provincial Key Laboratory of Proteomics, Department of Pathophysiology, School of Basic Medical Sciences, Southern Medical University, Guangzhou, P. R. China
| | - Junhua Peng
- Guangdong Provincial Key Laboratory of Proteomics, Department of Pathophysiology, School of Basic Medical Sciences, Southern Medical University, Guangzhou, P. R. China
| | - Jiaqi Fan
- Guangdong Provincial Key Laboratory of Proteomics, Department of Pathophysiology, School of Basic Medical Sciences, Southern Medical University, Guangzhou, P. R. China
| | - Ni Tang
- Department of Obstetrics and Gynecology, Center for Reproductive Medicine, Guangdong Provincial Key Laboratory of Major Obstetric Diseases, The Third Affiliated Hospital of Guangzhou Medical University, Guangzhou, P. R. China
- Key Laboratory for Reproductive Medicine of Guangdong Province, The Third Affiliated Hospital of Guangzhou Medical University, Guangzhou, P. R. China
- Guangdong Provincial Clinical Research Center for Obstetrics and Gynecology, The Third Affiliated Hospital of Guangzhou Medical University, Guangzhou, P. R. China
- Guangdong-Hong Kong-Macao Greater Bay Area Higher Education Joint Laboratory of Maternal-Fetal Medicine, The Third Affiliated Hospital of Guangzhou Medical University, Guangzhou, P. R. China
| | - Rui Hua
- Department of Obstetrics and Gynecology, Nanfang Hospital, Southern Medical University, Guangzhou, P. R. China
| | - Xueliang Zhou
- Department of Obstetrics and Gynecology, Center for Reproductive Medicine, Guangdong Provincial Key Laboratory of Major Obstetric Diseases, The Third Affiliated Hospital of Guangzhou Medical University, Guangzhou, P. R. China
- Key Laboratory for Reproductive Medicine of Guangdong Province, The Third Affiliated Hospital of Guangzhou Medical University, Guangzhou, P. R. China
- Guangdong Provincial Clinical Research Center for Obstetrics and Gynecology, The Third Affiliated Hospital of Guangzhou Medical University, Guangzhou, P. R. China
- Guangdong-Hong Kong-Macao Greater Bay Area Higher Education Joint Laboratory of Maternal-Fetal Medicine, The Third Affiliated Hospital of Guangzhou Medical University, Guangzhou, P. R. China
| | - Zhihao Wang
- Guangdong Provincial Key Laboratory of Proteomics, Department of Pathophysiology, School of Basic Medical Sciences, Southern Medical University, Guangzhou, P. R. China
| | - Longfei Wang
- Guangdong Provincial Key Laboratory of Proteomics, Department of Pathophysiology, School of Basic Medical Sciences, Southern Medical University, Guangzhou, P. R. China
| | - Yanling Bai
- Department of Obstetrics and Gynecology, Center for Reproductive Medicine, Guangdong Provincial Key Laboratory of Major Obstetric Diseases, The Third Affiliated Hospital of Guangzhou Medical University, Guangzhou, P. R. China
- Key Laboratory for Reproductive Medicine of Guangdong Province, The Third Affiliated Hospital of Guangzhou Medical University, Guangzhou, P. R. China
- Guangdong Provincial Clinical Research Center for Obstetrics and Gynecology, The Third Affiliated Hospital of Guangzhou Medical University, Guangzhou, P. R. China
- Guangdong-Hong Kong-Macao Greater Bay Area Higher Education Joint Laboratory of Maternal-Fetal Medicine, The Third Affiliated Hospital of Guangzhou Medical University, Guangzhou, P. R. China
| | - Xiaowan Quan
- Guangdong Provincial Key Laboratory of Proteomics, Department of Pathophysiology, School of Basic Medical Sciences, Southern Medical University, Guangzhou, P. R. China
| | - Zimeng Wang
- Guangdong Provincial Key Laboratory of Proteomics, Department of Pathophysiology, School of Basic Medical Sciences, Southern Medical University, Guangzhou, P. R. China
| | - Li Zhang
- Guangdong Provincial Key Laboratory of Proteomics, Department of Pathophysiology, School of Basic Medical Sciences, Southern Medical University, Guangzhou, P. R. China
| | - Chen Luo
- Department of Obstetrics and Gynecology, Nanfang Hospital, Southern Medical University, Guangzhou, P. R. China
| | - Weiqing Zhang
- Department of Obstetrics and Gynecology, Nanfang Hospital, Southern Medical University, Guangzhou, P. R. China
| | - Xiangjin Kang
- Department of Obstetrics and Gynecology, Center for Reproductive Medicine, Guangdong Provincial Key Laboratory of Major Obstetric Diseases, The Third Affiliated Hospital of Guangzhou Medical University, Guangzhou, P. R. China
- Key Laboratory for Reproductive Medicine of Guangdong Province, The Third Affiliated Hospital of Guangzhou Medical University, Guangzhou, P. R. China
- Guangdong Provincial Clinical Research Center for Obstetrics and Gynecology, The Third Affiliated Hospital of Guangzhou Medical University, Guangzhou, P. R. China
- Guangdong-Hong Kong-Macao Greater Bay Area Higher Education Joint Laboratory of Maternal-Fetal Medicine, The Third Affiliated Hospital of Guangzhou Medical University, Guangzhou, P. R. China
| | - Jianqiao Liu
- Department of Obstetrics and Gynecology, Center for Reproductive Medicine, Guangdong Provincial Key Laboratory of Major Obstetric Diseases, The Third Affiliated Hospital of Guangzhou Medical University, Guangzhou, P. R. China
- Key Laboratory for Reproductive Medicine of Guangdong Province, The Third Affiliated Hospital of Guangzhou Medical University, Guangzhou, P. R. China
- Guangdong Provincial Clinical Research Center for Obstetrics and Gynecology, The Third Affiliated Hospital of Guangzhou Medical University, Guangzhou, P. R. China
- Guangdong-Hong Kong-Macao Greater Bay Area Higher Education Joint Laboratory of Maternal-Fetal Medicine, The Third Affiliated Hospital of Guangzhou Medical University, Guangzhou, P. R. China
| | - Lei Li
- Department of Obstetrics and Gynecology, Center for Reproductive Medicine, Guangdong Provincial Key Laboratory of Major Obstetric Diseases, The Third Affiliated Hospital of Guangzhou Medical University, Guangzhou, P. R. China.
- Key Laboratory for Reproductive Medicine of Guangdong Province, The Third Affiliated Hospital of Guangzhou Medical University, Guangzhou, P. R. China.
- Guangdong Provincial Clinical Research Center for Obstetrics and Gynecology, The Third Affiliated Hospital of Guangzhou Medical University, Guangzhou, P. R. China.
- Guangdong-Hong Kong-Macao Greater Bay Area Higher Education Joint Laboratory of Maternal-Fetal Medicine, The Third Affiliated Hospital of Guangzhou Medical University, Guangzhou, P. R. China.
| | - Lin Li
- Guangdong Provincial Key Laboratory of Proteomics, Department of Pathophysiology, School of Basic Medical Sciences, Southern Medical University, Guangzhou, P. R. China.
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Marsico TV, Silva MV, Valente RS, Annes K, Rissi VB, Glanzner WG, Sudano MJ. Unraveling the Consequences of Oxygen Imbalance on Early Embryo Development: Exploring Mitigation Strategies. Animals (Basel) 2023; 13:2171. [PMID: 37443969 DOI: 10.3390/ani13132171] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2023] [Revised: 06/24/2023] [Accepted: 06/27/2023] [Indexed: 07/15/2023] Open
Abstract
Although well-established and adopted by commercial laboratories, the in vitro embryo production system still requires refinements to achieve its highest efficiency. Early embryonic development is a dynamic event, demanding suitable conditions to provide a high number of embryos with quality and competence. The first step to obtaining an optimized in vitro environment is to know the embryonic metabolism and energy request throughout the different stages of development. Oxygen plays a crucial role in several key biological processes necessary to sustain and complete embryonic development. Nonetheless, there is still controversy regarding the optimal in vitro atmospheric concentrations during culture. Herein, we discuss the impact of oxygen tension on the viability of in vitro-produced embryos during early development. The importance of oxygen tension is addressed as its roles regarding essential embryonic traits, including embryo production rates, embryonic cell viability, gene expression profile, epigenetic regulation, and post-cryopreservation survival. Finally, we highlight the damage caused by in vitro unbalanced oxygen tensions and strategies to mitigate the harmful effects.
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Affiliation(s)
- Thamiris Vieira Marsico
- Center for Natural and Human Sciences, Federal University of ABC, Santo André 09210-580, SP, Brazil
| | - Mara Viana Silva
- Center for Natural and Human Sciences, Federal University of ABC, Santo André 09210-580, SP, Brazil
| | - Roniele Santana Valente
- Center for Natural and Human Sciences, Federal University of ABC, Santo André 09210-580, SP, Brazil
| | - Kelly Annes
- Department of Genetics and Evolution, Federal University of São Carlos, São Carlos 13565-905, SP, Brazil
| | - Vitor Braga Rissi
- Faculty of Veterinary Medicine, Federal University of Santa Catarina, UFSC, Curitibanos 89520-000, SC, Brazil
| | - Werner Giehl Glanzner
- Department of Animal Science, McGill University, Sainte-Anne-de-Bellevue, QC H9X 3V9, Canada
| | - Mateus José Sudano
- Center for Natural and Human Sciences, Federal University of ABC, Santo André 09210-580, SP, Brazil
- Department of Genetics and Evolution, Federal University of São Carlos, São Carlos 13565-905, SP, Brazil
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Dionne G, Calder M, Betts DH, Rafea BA, Watson AJ. Expression and localization of NRF2/Keap1 signalling pathway genes in mouse preimplantation embryos exposed to free fatty acids. Gene Expr Patterns 2022; 46:119281. [PMID: 36243294 DOI: 10.1016/j.gep.2022.119281] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2022] [Revised: 09/06/2022] [Accepted: 10/07/2022] [Indexed: 11/04/2022]
Abstract
Obese women experience greater incidence of infertility, with reproductive tracts exposing preimplantation embryos to elevated free fatty acids (FFA) such as palmitic acid (PA) and oleic acid (OA). PA treatment impairs mouse preimplantation development in vitro, while OA co-treatment rescues blastocyst development of PA treated embryos. In the present study, we investigated the effects of PA and OA treatment on NRF2/Keap1 localization, and relative antioxidant enzyme (Glutathione peroxidase; Gpx1, Catalase; Cat, Superoxide dismutase; Sod1 and γ-Glutamylcysteine ligase catalytic unit; Gclc) mRNA levels, during in vitro mouse preimplantation embryo development. Female mice were superovulated, mated, and embryos cultured in the presence of bovine Serum albumin (BSA) control or PA, or OA, alone (each at 100 μM) or PA + OA combined (each at 100 μM) treatment. NRF2 displayed nuclear localization at all developmental stages, whereas Keap1 primarily displayed cytoplasmic localization throughout control mouse preimplantation development in vitro. Relative transcript levels of Nrf2, Keap1, and downstream antioxidants significantly increased throughout control mouse preimplantation development in vitro. PA treatment significantly decreased blastocyst development and the levels of nuclear NRF2, while OA and PA + OA treatments did not. PA and OA treatments did not impact relative mRNA levels of Nrf2, Keap1, Gpx1, Cat, Sod1 or Gclc. Our outcomes demonstrate that cultured mouse embryos display nuclear NRF2, but that PA treatment reduces nuclear NRF2 and thus likely impacts NRF2/KEAP1 stress response mechanisms. Further studies should investigate whether free fatty acid effects on NRF2/KEAP1 contribute to the reduced fertility displayed by obese patients.
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Affiliation(s)
- Grace Dionne
- Department of Obstetrics and Gynaecology, Canada; Department of Physiology and Pharmacology, University of Western Ontario, London ON, N6A 5C1, Canada; The Children's Health Research Institute - Lawson Health Research Institute, London ON, N6C 2R5, Canada
| | - Michele Calder
- Department of Obstetrics and Gynaecology, Canada; Department of Physiology and Pharmacology, University of Western Ontario, London ON, N6A 5C1, Canada; The Children's Health Research Institute - Lawson Health Research Institute, London ON, N6C 2R5, Canada
| | - Dean H Betts
- Department of Obstetrics and Gynaecology, Canada; Department of Physiology and Pharmacology, University of Western Ontario, London ON, N6A 5C1, Canada; The Children's Health Research Institute - Lawson Health Research Institute, London ON, N6C 2R5, Canada
| | - Basim Abu Rafea
- Department of Obstetrics and Gynaecology, Canada; The Children's Health Research Institute - Lawson Health Research Institute, London ON, N6C 2R5, Canada
| | - Andrew J Watson
- Department of Obstetrics and Gynaecology, Canada; Department of Physiology and Pharmacology, University of Western Ontario, London ON, N6A 5C1, Canada; The Children's Health Research Institute - Lawson Health Research Institute, London ON, N6C 2R5, Canada.
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4
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G RK, Mishra A, Dhali A, Reddy IJ, Dey DK, Pal D, Bhatta R. In vitro production of desired sex ovine embryos modulating polarity of oocytes for sex-specific sperm binding during fertilization. Sci Rep 2022; 12:5845. [PMID: 35393499 PMCID: PMC8991187 DOI: 10.1038/s41598-022-09895-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2021] [Accepted: 03/16/2022] [Indexed: 12/04/2022] Open
Abstract
The present study aimed to modulate the oxidative status-mediated polarity of the oocytes for sex-specific sperm fertilization to generate desired sex embryos. In vitro embryos were produced at different oxidative status, varying O2 concentrations, and without/with l-carnitine in maturation and culture media. The majority of the embryos produced at high oxidative stress were males whereas; low oxidative status favoured female embryos production. Low O2 doubled the proportion of female embryos (10.59 vs 21.95%); however, l-carnitine supplementation in media increased approximately seven-folds of the female embryos (12.26 vs. 77.62%) production. Oocytes matured at high oxidative status were in the repolarized state favouring positively charged Y sperm fertilization to produce significantly more male embryos. Low oxidative status favoured negatively charged X sperm fertilization to the oocytes in the depolarized state to produce more female embryos. Intracellular ROS was significantly low in female embryos than in males; however, female embryos were more stressful than males. The study concluded that the oxidative status-mediated alteration in pH of the medium to modulate the intracellular positive ions is the main critical factor to influence the sex of embryos through sex-specific sperms fertilization to the oocytes as per their polarity.
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Affiliation(s)
- Ramesh Kumar G
- ICAR-National Institute of Animal Nutrition and Physiology, Adugodi, Bengaluru, 560 030, India
| | - Ashish Mishra
- ICAR-National Institute of Animal Nutrition and Physiology, Adugodi, Bengaluru, 560 030, India.
| | - Arindam Dhali
- ICAR-National Institute of Animal Nutrition and Physiology, Adugodi, Bengaluru, 560 030, India
| | - Ippala Janardhan Reddy
- ICAR-National Institute of Animal Nutrition and Physiology, Adugodi, Bengaluru, 560 030, India
| | - Debpriyo Kumar Dey
- ICAR-National Institute of Animal Nutrition and Physiology, Adugodi, Bengaluru, 560 030, India
| | - Dintaran Pal
- ICAR-National Institute of Animal Nutrition and Physiology, Adugodi, Bengaluru, 560 030, India
| | - Raghavendra Bhatta
- ICAR-National Institute of Animal Nutrition and Physiology, Adugodi, Bengaluru, 560 030, India
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5
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Li D, Liu Z, Deng M, Liu L, Lu J, Wang F, Wan Y. The function of the m6A methyltransferase METTL3 in goat early embryo development under hypoxic and normoxic conditions. Theriogenology 2022; 177:140-150. [PMID: 34700071 DOI: 10.1016/j.theriogenology.2021.10.017] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2021] [Revised: 09/16/2021] [Accepted: 10/16/2021] [Indexed: 01/01/2023]
Abstract
It has been reported that N6-methyladenosine (m6A) methyltransferase-like 3 (METTL3) plays an important role in zygote genome activation during embryonic development, but the effects of METTL3 under oxidative stress in the early development of goat embryos remain largely unknown. In this study, zygotes were monitored at 72 and 168 h after fertilization, and they developed to the 8-cell stage and blastocyst stage under hypoxic conditions and normoxic conditions. Single-cell transcriptome sequencing was performed at the 8-cell stage and the blastocyst stage in the goat embryos, the differentially expressed METTL3 was screened from the sequencing results. We found that microinjection of small interfering RNA (siRNA) against METTL3 caused developmental arrest, both 8-cell rates (37.45 ± 2.21% vs. 47.09 ± 1.38%; P < 0.01) and blastocyst rates of Si-METTL3 (12.17% ± 2.84 vs. 20.83 ± 3.61%; P < 0.01) in Si-METTL3 group were significantly decreased compared with that of control under hypoxic conditions, significant changes were found in the m6A-related genes and the expression levels of critical transcription factors, such as, NANOG, GATA3, CDX2 and SOX17, were decreased. This study revealed the key role of METTL3 in the regulation of embryonic development under oxidative stress, and laid the foundation for further study of the crucial mechanism of oxidative stress during the early embryonic development of goats.
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Affiliation(s)
- Dongxu Li
- Jiangsu Livestock Embryo Engineering Laboratory, College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, 210095, China
| | - Zifei Liu
- Jiangsu Livestock Embryo Engineering Laboratory, College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, 210095, China
| | - Mingtian Deng
- Jiangsu Livestock Embryo Engineering Laboratory, College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, 210095, China
| | - Liang Liu
- Jiangsu Livestock Embryo Engineering Laboratory, College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, 210095, China
| | - Jiawei Lu
- Jiangsu Livestock Embryo Engineering Laboratory, College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, 210095, China
| | - Feng Wang
- Jiangsu Livestock Embryo Engineering Laboratory, College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, 210095, China
| | - Yongjie Wan
- Jiangsu Livestock Embryo Engineering Laboratory, College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, 210095, China.
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Castro PL, Ferraz ALJ, Patil JG, Ribeiro RP. Use of melatonin as an inhibitor of apoptotic process for cryopreservation of zebrafish (Danio rerio) embryos. BRAZ J BIOL 2021; 82:e241081. [PMID: 34105654 DOI: 10.1590/1519-6984.241081] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2020] [Accepted: 11/18/2020] [Indexed: 01/31/2023] Open
Abstract
This study investigated the use of melatonin to arrest the effects of apoptosis in vitrified zebrafish (D. rerio) embryos. Dechorionated embryos at 22-24 somite-stage were divided (n = 60/treatment) into a non-vitrified (Control Group, 0 M melatonin) and vitrified treatments with 0 M (T1), 1 µM (T2) and 1 mM of melatonin (T3). For vitrified treatments, a solution methanol/propylene glycol based was used and the embryos stored in -196 °C for a week. After thaw, survival rate, scanning electron microscopy, expression of anti (bcl-2) and pro-apoptotic (bax/caspase-3) genes, reactive oxygen species (ROS) formation and DNA fragmentation analyses were performed. No live embryos were obtained from vitrified treatments, observing a rapid degeneration immediately after thawing, with the vitelline layer rupture and leakage of its content, followed by breakdown of epithelial cells and melanisation of the tissue. Regarding the apoptotic process, T3 had the highest relative gene expression, for the three genes (P < 0.05) furthermore, T2 had similar expression of pro-apoptotic genes to CG (P < 0.05). ROS formation revealed that CG presented lower percentage of embryo surface area affected (3.80 ± 0.40%) (P < 0.05), in contrast, no differences were found among the other groups. T1 was most significantly (P < 0.05) damaged by DNA fragmentation. The vitrified groups with melatonin had similar damage levels of CG (P > 0.05). The inclusion of 1 µM of melatonin in the vitrifying solution, countered the effects of apoptotic process in post-thaw embryos, suggesting its utility in cryopreserving fish embryos.
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Affiliation(s)
- P L Castro
- Universidade Estadual de Maringá - UEM, Departamento de Zootecnia, Maringá, PR, Brasil
| | - A L J Ferraz
- Universidade Estadual de Mato Grosso do Sul - UEMS, Aquidauana, MS, Brasil
| | - J G Patil
- Fisheries and Aquaculture Center, Institute for Marine and Antarctic Studies, University of Tasmania, Hobart, Australia
| | - R P Ribeiro
- Universidade Estadual de Maringá - UEM, Departamento de Zootecnia, Maringá, PR, Brasil
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Ivanov D, Mazzoccoli G, Anderson G, Linkova N, Dyatlova A, Mironova E, Polyakova V, Kvetnoy I, Evsyukova I, Carbone A, Nasyrov R. Melatonin, Its Beneficial Effects on Embryogenesis from Mitigating Oxidative Stress to Regulating Gene Expression. Int J Mol Sci 2021; 22:ijms22115885. [PMID: 34070944 PMCID: PMC8198864 DOI: 10.3390/ijms22115885] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2021] [Revised: 05/15/2021] [Accepted: 05/28/2021] [Indexed: 12/16/2022] Open
Abstract
Embryogenesis is a complex multi-stage process regulated by various signaling molecules including pineal and extrapineal melatonin (MT). Extrapineal MT is found in the placenta and ovaries, where it carries out local hormonal regulation. MT is necessary for normal development of oocytes, fertilization and subsequent development of human, animal and avian embryos. This review discusses the role of MT as a regulator of preimplantation development of the embryo and its implantation into endometrial tissue, followed by histo-, morpho- and organogenesis. MT possesses pronounced antioxidant properties and helps to protect the embryo from oxidative stress by regulating the expression of the NFE2L2, SOD1, and GPX1 genes. MT activates the expression of the ErbB1, ErbB4, GJA1, POU5F1, and Nanog genes which are necessary for embryo implantation and blastocyst growth. MT induces the expression of vascular endothelial growth factor (VEGF) and its type 1 receptor (VEGF-R1) in the ovaries, activating angiogenesis. Given the increased difficulties in successful fertilization and embryogenesis with age, it is of note that MT slows down ovarian aging by increasing the transcription of sirtuins. MT administration to patients suffering from infertility demonstrates an increase in the effectiveness of in vitro fertilization. Thus, MT may be viewed as a key factor in embryogenesis regulation, including having utility in the management of infertility.
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Affiliation(s)
- Dmitry Ivanov
- Department of Neonatology, Saint-Petersburg State Pediatric Medical University, Litovskaya Str., 2, 194100 St. Petersburg, Russia; (D.I.); (V.P.); (R.N.)
| | - Gianluigi Mazzoccoli
- Department of Medical Sciences, Division of Internal Medicine and Chronobiology Laboratory, Fondazione IRCCS Casa Sollievo della Sofferenza, 71013 San Giovanni Rotondo, Italy; (G.M.); (A.C.)
| | - George Anderson
- Department of Clinical Research, CRC Scotland & London, London E14 6JE, UK;
| | - Natalia Linkova
- Department of Biogerontology, Saint Petersburg Institute of Bioregulation and Gerontology, 197110 St. Petersburg, Russia; (N.L.); (A.D.)
- Department of Therapy, Geriatry and Anti-Aging Medicine, Academy of Postgraduate Education, Federal Medical Biological Agency, 220013 Moscow, Russia
| | - Anastasiia Dyatlova
- Department of Biogerontology, Saint Petersburg Institute of Bioregulation and Gerontology, 197110 St. Petersburg, Russia; (N.L.); (A.D.)
| | - Ekaterina Mironova
- Department of Biogerontology, Saint Petersburg Institute of Bioregulation and Gerontology, 197110 St. Petersburg, Russia; (N.L.); (A.D.)
- Center of Molecular Biomedicine, Saint-Petersburg Institute of Phthisiopulmonology, Lygovsky Ave. 2-4, 191036 St. Petersburg, Russia;
- Correspondence: ; Tel.: +7-(999)-535-95-88
| | - Victoria Polyakova
- Department of Neonatology, Saint-Petersburg State Pediatric Medical University, Litovskaya Str., 2, 194100 St. Petersburg, Russia; (D.I.); (V.P.); (R.N.)
| | - Igor Kvetnoy
- Center of Molecular Biomedicine, Saint-Petersburg Institute of Phthisiopulmonology, Lygovsky Ave. 2-4, 191036 St. Petersburg, Russia;
- Department of Pathology, Saint-Petersburg State University, University Embankment, 7/9, 199034 St. Petersburg, Russia
| | - Inna Evsyukova
- Department of Newborns’ Pathology, Ott Research Institute of Obstetrics, Gynecology and Reproductology, Mendeleyevskaya Liniya, 3, 199034 St. Petersburg, Russia;
| | - Annalucia Carbone
- Department of Medical Sciences, Division of Internal Medicine and Chronobiology Laboratory, Fondazione IRCCS Casa Sollievo della Sofferenza, 71013 San Giovanni Rotondo, Italy; (G.M.); (A.C.)
| | - Ruslan Nasyrov
- Department of Neonatology, Saint-Petersburg State Pediatric Medical University, Litovskaya Str., 2, 194100 St. Petersburg, Russia; (D.I.); (V.P.); (R.N.)
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Comprehensive Transcriptome Analysis of mRNA Expression Patterns of Early Embryo Development in Goat under Hypoxic and Normoxic Conditions. BIOLOGY 2021; 10:biology10050381. [PMID: 33924908 PMCID: PMC8146044 DOI: 10.3390/biology10050381] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/01/2021] [Revised: 04/22/2021] [Accepted: 04/26/2021] [Indexed: 12/13/2022]
Abstract
Simple Summary Oxygen plays a vital role in the development of early embryos, no matter whether it is too high or low, it will adversely affect the early embryo development, but the mechanisms involved in these effects are still unclear. RNA-seq was performed to compare 8-cell-stage and blastocyst-stage goat embryos under hypoxic and normoxic conditions, the mRNA expression mechanisms of 8-cell- and blastocyst-stage embryos were systematically analyzed under hypoxic and normoxic conditions. Functional enrichment analysis indicated that these differentially expressed genes (DEGs) were mainly related to biological processes and function regulation. In conclusion, we can infer that oxidative stress regulates early embryo development by affecting the expression of zygotic genes and transcription factors, and those stress genes play a potential role in adaptation to normoxic environments in goat embryos. Abstract It has been reported that hypoxic environments were more suitable for the in vitro development of mammalian embryos, but the underlying mechanisms were still unclear. In the present study, RNA-seq was performed to compare 8-cell-stage and blastocyst-stage goat embryos under hypoxic and normoxic conditions; zygotes were checked at 72 and 168 h to 8-cell stage (L8C) and blastocyst stage (LM) in hypoxic conditions and 8-cell stage (H8C) and blastocyst stage (HM) in normoxic conditions. In the H8C and L8C groups, 399 DEGs were identified, including 348 up- and 51 down-regulated DEGs. In the HM and LM groups, 1710 DEGs were identified, including 1516 up- and 194 down-regulated DEGs. The expression levels of zygotic genes, transcription factors, and maternal genes, such as WEE2, GDF9, HSP70.1, BTG4, and UBE2S showed significant changes. Functional enrichment analysis indicated that these DEGs were mainly related to biological processes and function regulation. In addition, combined with the pathway–gene interaction network and protein–protein interaction network, twenty-two of the hub genes were identified and they are mainly involved in energy metabolism, immune stress response, cell cycle, receptor binding, and signal transduction pathways. The present study provides comprehensive insights into the effects of oxidative stress on early embryo development in goats.
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Anti-oxidative effects of exogenous ganglioside GD1a and GT1b on embryonic developmental competence in pigs. JOURNAL OF ANIMAL REPRODUCTION AND BIOTECHNOLOGY 2020. [DOI: 10.12750/jarb.35.4.347] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022] Open
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Ramos-Ibeas P, Gimeno I, Cañón-Beltrán K, Gutiérrez-Adán A, Rizos D, Gómez E. Senescence and Apoptosis During in vitro Embryo Development in a Bovine Model. Front Cell Dev Biol 2020; 8:619902. [PMID: 33392207 PMCID: PMC7775420 DOI: 10.3389/fcell.2020.619902] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2020] [Accepted: 12/01/2020] [Indexed: 12/15/2022] Open
Abstract
According to the World Health Organization, infertility affects up to 14% of couples under reproductive age, leading to an exponential rise in the use of assisted reproduction as a route for conceiving a baby. In the same way, thousands of embryos are produced in cattle and other farm animals annually, leading to increased numbers of individuals born. All reproductive manipulations entail deviations of natural phenotypes and genotypes, with in vitro embryo technologies perhaps showing the biggest effects, although these alterations are still emerging. Most of these indications have been provided by animal models, in particular the bovine species, due to its similarities to human early embryo development. Oocytes and embryos are highly sensitive to environmental stress in vivo and in vitro. Thus, during in vitro culture, a number of stressful conditions affect embryonic quality and viability, inducing subfertility and/or long-term consequences that may reach the offspring. A high proportion of the embryos produced in vitro are arrested at a species-specific stage of development during the first cell divisions. These arrested embryos do not show signs of programmed cell death during early cleavage stages. Instead, defective in vitro produced embryos would enter a permanent cell cycle arrest compatible with cellular senescence, in which they show active metabolism and high reactive oxygen species levels. Later in development, mainly during the morula and blastocyst stages, apoptosis would mediate the elimination of certain cells, accomplishing both a physiological role in to balancing cell proliferation and death, and a pathological role preventing the transmission of damaged cells with an altered genome. The latter would acquire relevant importance in in vitro produced embryos that are submitted to stressful environmental stimuli. In this article, we review the mechanisms mediating apoptosis and senescence during early embryo development, with a focus on in vitro produced bovine embryos. Additionally, we shed light on the protective role of senescence and apoptosis to ensure that unhealthy cells and early embryos do not progress in development, avoiding long-term detrimental effects.
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Affiliation(s)
- Priscila Ramos-Ibeas
- Department of Animal Reproduction, National Institute for Agriculture and Food Research and Technology (INIA), Madrid, Spain
| | - Isabel Gimeno
- Servicio Regional de Investigación y Desarrollo Agroalimentario (SERIDA), Gijón, Spain
| | - Karina Cañón-Beltrán
- Department of Animal Reproduction, National Institute for Agriculture and Food Research and Technology (INIA), Madrid, Spain
| | - Alfonso Gutiérrez-Adán
- Department of Animal Reproduction, National Institute for Agriculture and Food Research and Technology (INIA), Madrid, Spain
| | - Dimitrios Rizos
- Department of Animal Reproduction, National Institute for Agriculture and Food Research and Technology (INIA), Madrid, Spain
| | - Enrique Gómez
- Servicio Regional de Investigación y Desarrollo Agroalimentario (SERIDA), Gijón, Spain
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García-Martínez T, Vendrell-Flotats M, Martínez-Rodero I, Ordóñez-León EA, Álvarez-Rodríguez M, López-Béjar M, Yeste M, Mogas T. Glutathione Ethyl Ester Protects In Vitro -Maturing Bovine Oocytes against Oxidative Stress Induced by Subsequent Vitrification/Warming. Int J Mol Sci 2020; 21:ijms21207547. [PMID: 33066129 PMCID: PMC7588878 DOI: 10.3390/ijms21207547] [Citation(s) in RCA: 32] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2020] [Revised: 09/30/2020] [Accepted: 10/08/2020] [Indexed: 12/21/2022] Open
Abstract
This study aimed to examine whether the addition of glutathione ethyl ester (GSH-OEt) to the in vitro maturation (IVM) medium would improve the resilience of bovine oocytes to withstand vitrification. The effects of GSH-OEt on spindle morphology, levels of reactive oxygen species (ROS), mitochondrial activity and distribution, and embryo developmental potential were assessed together with the expression of genes with a role in apoptosis (BAX, BCL2), oxidative-stress pathways (GPX1, SOD1), water channels (AQP3), implantation (IFN-τ) and gap junctions (CX43) in oocytes and their derived blastocysts. Vitrification gave rise to abnormal spindle microtubule configurations and elevated ROS levels. Supplementation of IVM medium with GSH-OEt before vitrification preserved mitochondrial distribution pattern and diminished both cytoplasmic and mitochondrial ROS contents and percentages of embryos developing beyond the 8-cell stage were similar to those recorded in fresh non-vitrified oocytes. Although not significantly different from control vitrified oocytes, vitrified oocytes after GSH-OEt treatment gave rise to similar day 8-blastocyst and hatching rates to fresh non-vitrified oocytes. No effects of GSH-OEt supplementation were noted on the targeted gene expression of oocytes and derived blastocysts, with the exception of GPX1, AQP3 and CX43 in derived blastocysts. The addition of GSH-OEt to the IVM medium before vitrification may be beneficial for embryo development presumably as the consequence of additional anti-oxidant protection during IVM.
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Affiliation(s)
- Tania García-Martínez
- Department of Animal Medicine and Surgery, Autonomous University of Barcelona, ES-08193 Cerdanyola del Vallès, Spain; (T.G.-M.); (M.V.-F.); (I.M.-R.); (E.A.O.-L.)
| | - Meritxell Vendrell-Flotats
- Department of Animal Medicine and Surgery, Autonomous University of Barcelona, ES-08193 Cerdanyola del Vallès, Spain; (T.G.-M.); (M.V.-F.); (I.M.-R.); (E.A.O.-L.)
- Department of Animal Health and Anatomy, Autonomous University of Barcelona, ES-08193 Cerdanyola del Vallès, Spain; (M.Á.-R.); (M.L.-B.)
| | - Iris Martínez-Rodero
- Department of Animal Medicine and Surgery, Autonomous University of Barcelona, ES-08193 Cerdanyola del Vallès, Spain; (T.G.-M.); (M.V.-F.); (I.M.-R.); (E.A.O.-L.)
| | - Erika Alina Ordóñez-León
- Department of Animal Medicine and Surgery, Autonomous University of Barcelona, ES-08193 Cerdanyola del Vallès, Spain; (T.G.-M.); (M.V.-F.); (I.M.-R.); (E.A.O.-L.)
- Grupo InVitro, Tabasco 86040, Mexico
| | - Manuel Álvarez-Rodríguez
- Department of Animal Health and Anatomy, Autonomous University of Barcelona, ES-08193 Cerdanyola del Vallès, Spain; (M.Á.-R.); (M.L.-B.)
| | - Manel López-Béjar
- Department of Animal Health and Anatomy, Autonomous University of Barcelona, ES-08193 Cerdanyola del Vallès, Spain; (M.Á.-R.); (M.L.-B.)
- College of Veterinary Medicine, Western University of Health Sciences, Pomona, CA 91766, USA
| | - Marc Yeste
- Department of Biology, Institute of Food and Agricultural Technology, University of Girona, ES-17004 Girona, Spain;
| | - Teresa Mogas
- Department of Animal Medicine and Surgery, Autonomous University of Barcelona, ES-08193 Cerdanyola del Vallès, Spain; (T.G.-M.); (M.V.-F.); (I.M.-R.); (E.A.O.-L.)
- Correspondence: ; Tel.: +34-696-64-51-27
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12
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Baran A, Yildirim S, Ghosigharehaghaji A, Bolat İ, Sulukan E, Ceyhun SB. An approach to evaluating the potential teratogenic and neurotoxic mechanism of BHA based on apoptosis induced by oxidative stress in zebrafish embryo ( Danio rerio). Hum Exp Toxicol 2020; 40:425-438. [PMID: 32909836 DOI: 10.1177/0960327120952140] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Butylated hydroxyanisole (BHA) has been widely used in the cosmetics, pharmaceutical, and food industries due to its antioxidant activity. Despite the antioxidant effects, reported adverse effects of BHA at the cellular level have made its use controversial. In this regard, this study was performed to elucidate the potential toxicity mechanism caused by BHA at the molecular level in zebrafish embryos. For this purpose, zebrafish embryos were exposed to BHA at levels of 0.5, 1, 5, 7.5 and 10 ppm and monitored at 24, 48, 72 and 96 hours. Survival rate, hatching rate and malformations were evaluated. We examined the potential for reactive oxygen species (ROS) production and apoptosis signalling accumulation in the whole body. Moreover, we evaluated histopathological and immunohistochemical (8-OHDG) characterization of the brain in zebrafish embryos at the 96th hour. We also examined apoptosis, histopathological and immunohistochemical (8-OHDG) characteristics in 96 hpf zebrafish larvae exposed to tertiary butylhydroquinone (TBHQ), one of the major metabolites of BHA, at doses of 0.5, 2.5, 3.75 and 5 ppm. Consequently, it has been considered that increased embryonic and larval malformations in this study may have been caused by ROS-induced apoptosis. After 96 h of exposure, positive 8-OHdG immunofluorescence, degenerative changes, and necrosis were observed in the brain of BHA and TBHQ-treated zebrafish larvae in a dose-dependent manner. BHA and TBHQ exposure could lead to an increase in 8-OHdG activities by resulting oxidative DNA damage. In particular, the obtained data indicate that the induction of ROS formation, occurring during exposure to BHA and/or multiple hydroxyl groups, could be responsible for apoptosis.
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Affiliation(s)
- A Baran
- Department of Food Quality Control and Analysis, Erzurum Vocational School, 37503Atatürk University, Erzurum, Turkey
| | - S Yildirim
- Department of Pathology, Faculty of Veterinary, 37503Atatürk University, Erzurum, Turkey
| | - A Ghosigharehaghaji
- Aquatic Biotechnology Laboratory, Fisheries Faculty, 37503Atatürk University, Erzurum, Turkey
| | - İ Bolat
- Department of Pathology, Faculty of Veterinary, 37503Atatürk University, Erzurum, Turkey
| | - E Sulukan
- Aquatic Biotechnology Laboratory, Fisheries Faculty, 37503Atatürk University, Erzurum, Turkey
| | - S B Ceyhun
- Aquatic Biotechnology Laboratory, Fisheries Faculty, 37503Atatürk University, Erzurum, Turkey.,Aquaculture Department, Fisheries Faculty, 37503Atatürk University, Erzurum, Turkey
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13
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Dye ZT, Rutledge LV, Penuela S, Dyce PW. Pannexin 1 inhibition delays maturation and improves development of Bos taurus oocytes. J Ovarian Res 2020; 13:98. [PMID: 32838805 PMCID: PMC7447567 DOI: 10.1186/s13048-020-00704-w] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2020] [Accepted: 08/13/2020] [Indexed: 12/19/2022] Open
Abstract
Background Intercellular exchange between the oocyte and its surrounding cells within the follicular environment is critical for oocyte maturation and subsequent development. In vertebrates this exchange is facilitated through gap junctions formed by connexin membrane proteins. Another family of membrane proteins called pannexins are able to form single membrane channels that allow cellular exchanges with the extracellular environment. The most ubiquitously expressed and studied member, pannexin 1 (PANX1), has yet to be described thoroughly in female reproductive tissues or functionally studied during oocyte maturation. Here, we look into the expression of pannexin 1 in bovine cumulus-oocyte complexes (COCs), as well as, its potential role in oocyte maturation and development. Results We show that pannexin 1 is expressed in bovine COCs and that the expression of PANX1 was significantly lower in COCs isolated from large antral follicles (> 5 mm) compared to those isolated from small antral follicles (< 2 mm). Supporting this we also found lower expression of PANX1 in oocytes with higher developmental potential when compared to oocytes with lower developmental potential. We further found that PANX1 channel inhibition during in vitro maturation resulted in temporarily delayed meiotic maturation and improved in vitro developmental outcomes while decreasing intercellular reactive oxygen species. Conclusions These data suggests PANX1 is differentially expressed at a critical stage of follicular development when oocytes are acquiring developmental competence, and may play a role in the timing of oocyte maturation.
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Affiliation(s)
- Zachary Timothy Dye
- Department of Animal Sciences, Auburn University, CASIC Building, 559 Devall Drive, Auburn, AL, 36849, USA
| | - Lauren Virginia Rutledge
- Department of Animal Sciences, Auburn University, CASIC Building, 559 Devall Drive, Auburn, AL, 36849, USA
| | - Silvia Penuela
- Department of Anatomy and Cell Biology, Western University, London, Ontario, Canada
| | - Paul William Dyce
- Department of Animal Sciences, Auburn University, CASIC Building, 559 Devall Drive, Auburn, AL, 36849, USA.
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14
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Elshewy N, Ji D, Zhang Z, Chen D, Chen B, Xue R, Wu H, Wang J, Zhou P, Cao Y. Association between mild stimulated IVF/M cycle and early embryo arrest in sub fertile women with/without PCOS. Reprod Biol Endocrinol 2020; 18:71. [PMID: 32669130 PMCID: PMC7362506 DOI: 10.1186/s12958-020-00622-y] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/17/2020] [Accepted: 06/18/2020] [Indexed: 12/17/2022] Open
Abstract
BACKGROUND The in vitro maturation (IVM) technique has physical and financial benefits, but a lower efficiency and outcome that is still unclear whether it is related to polycystic ovary syndrome (PCOS) itself or the IVM procedure. In this study, we analyzed the clinical and laboratory outcomes of an optimized IVM protocol in patients with and without PCOS. We also discussed the possible reasons for early embryo arrest in the IVM cycle. METHODS This prospective study involved 58 PCOS patients and 56 non-PCOS patients who underwent mild stimulated IVF combined IVM (IVF/M) cycles. The clinical and laboratory outcomes were compared between the two groups. Also, metaphase II (MII) oocytes were obtained after IVM from the two groups, and in vivo MII oocytes randomly collected from IVF patients were examined for mitochondrial function using a laser scanning confocal microscope (LSCM). The aneuploidy rate for arrested cleavage embryos from IVM and IVF oocytes were screened using Next Generation Sequencing (NGS). RESULTS Mildly stimulated IVF/M resulted in cumulative clinical pregnancy and implantation rates (40.2, 28.7% in the PCOS group vs. 41.9, 36% in the non-PCOS group), respectively. The blastocyst formation rates were comparable (28% vs. 28.2%) in PCOS and non-PCOS groups, respectively. Using LSCM, there was a significant decrease in the mitochondrial membrane potential of IVM oocytes compared with the control IVF oocytes (P < 0.001), but no significant difference between the PCOS and non-PCOS groups. The NGS showed that the aneuploidy rates were comparable (75, 75, and 66.6%) in IVM-PCOS, IVM-non-PCOS, and control IVF arrested embryos, respectively. CONCLUSIONS The mildly stimulated IVF/M protocol produced acceptable clinical outcomes in PCOS and non-PCOS patients. IVM itself rather than the PCOS condition adversely affected the embryo development through its effect on mitochondrial function, which appeared to be a possible cause for the embryo arrest in the IVM cycles rather than chromosomal aneuploidy.
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Affiliation(s)
- Nagwa Elshewy
- grid.412679.f0000 0004 1771 3402Reproductive Medicine Center, Department of Obstetrics and Gynecology, the First Affiliated Hospital of Anhui Medical University, Hefei, China
| | - Dongmei Ji
- grid.412679.f0000 0004 1771 3402Reproductive Medicine Center, Department of Obstetrics and Gynecology, the First Affiliated Hospital of Anhui Medical University, Hefei, China
- grid.186775.a0000 0000 9490 772XKey Laboratory of Population Health Across Life Cycle (Anhui Medical University), Ministry of Education of the People’s Republic of China, Hefei, China
- Anhui Province Key Laboratory of Reproductive Health and Genetics, Hefei, China
| | - Zhiguo Zhang
- grid.412679.f0000 0004 1771 3402Reproductive Medicine Center, Department of Obstetrics and Gynecology, the First Affiliated Hospital of Anhui Medical University, Hefei, China
- Anhui Province Key Laboratory of Reproductive Health and Genetics, Hefei, China
- grid.186775.a0000 0000 9490 772XNHC Key Laboratory of Study on Abnormal Gametes and Reproductive Tract, Anhui Medical University, Hefei, China
| | - Dawei Chen
- grid.412679.f0000 0004 1771 3402Reproductive Medicine Center, Department of Obstetrics and Gynecology, the First Affiliated Hospital of Anhui Medical University, Hefei, China
- Anhui Province Key Laboratory of Reproductive Health and Genetics, Hefei, China
- grid.186775.a0000 0000 9490 772XNHC Key Laboratory of Study on Abnormal Gametes and Reproductive Tract, Anhui Medical University, Hefei, China
| | - Beili Chen
- grid.412679.f0000 0004 1771 3402Reproductive Medicine Center, Department of Obstetrics and Gynecology, the First Affiliated Hospital of Anhui Medical University, Hefei, China
- grid.186775.a0000 0000 9490 772XKey Laboratory of Population Health Across Life Cycle (Anhui Medical University), Ministry of Education of the People’s Republic of China, Hefei, China
- Anhui Province Key Laboratory of Reproductive Health and Genetics, Hefei, China
| | - Rufeng Xue
- grid.412679.f0000 0004 1771 3402Reproductive Medicine Center, Department of Obstetrics and Gynecology, the First Affiliated Hospital of Anhui Medical University, Hefei, China
- grid.186775.a0000 0000 9490 772XKey Laboratory of Population Health Across Life Cycle (Anhui Medical University), Ministry of Education of the People’s Republic of China, Hefei, China
- Anhui Province Key Laboratory of Reproductive Health and Genetics, Hefei, China
| | - Huan Wu
- grid.412679.f0000 0004 1771 3402Reproductive Medicine Center, Department of Obstetrics and Gynecology, the First Affiliated Hospital of Anhui Medical University, Hefei, China
- Anhui Province Key Laboratory of Reproductive Health and Genetics, Hefei, China
| | - Jianye Wang
- grid.412679.f0000 0004 1771 3402Reproductive Medicine Center, Department of Obstetrics and Gynecology, the First Affiliated Hospital of Anhui Medical University, Hefei, China
- Anhui Province Key Laboratory of Reproductive Health and Genetics, Hefei, China
| | - Ping Zhou
- grid.412679.f0000 0004 1771 3402Reproductive Medicine Center, Department of Obstetrics and Gynecology, the First Affiliated Hospital of Anhui Medical University, Hefei, China
- grid.186775.a0000 0000 9490 772XKey Laboratory of Population Health Across Life Cycle (Anhui Medical University), Ministry of Education of the People’s Republic of China, Hefei, China
- Anhui Province Key Laboratory of Reproductive Health and Genetics, Hefei, China
- grid.186775.a0000 0000 9490 772XNHC Key Laboratory of Study on Abnormal Gametes and Reproductive Tract, Anhui Medical University, Hefei, China
- Anhui Provincial Engineering Technology Research center for Bio preservation and Artificial Organs, Hefei, China
| | - Yunxia Cao
- grid.412679.f0000 0004 1771 3402Reproductive Medicine Center, Department of Obstetrics and Gynecology, the First Affiliated Hospital of Anhui Medical University, Hefei, China
- grid.186775.a0000 0000 9490 772XKey Laboratory of Population Health Across Life Cycle (Anhui Medical University), Ministry of Education of the People’s Republic of China, Hefei, China
- Anhui Province Key Laboratory of Reproductive Health and Genetics, Hefei, China
- grid.186775.a0000 0000 9490 772XNHC Key Laboratory of Study on Abnormal Gametes and Reproductive Tract, Anhui Medical University, Hefei, China
- Anhui Provincial Engineering Technology Research center for Bio preservation and Artificial Organs, Hefei, China
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Beneficial Effects of Melatonin in the Ovarian Transport Medium on In Vitro Embryo Production of Iberian Red Deer ( Cervus elaphus hispanicus). Animals (Basel) 2020; 10:ani10050763. [PMID: 32349425 PMCID: PMC7278470 DOI: 10.3390/ani10050763] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2020] [Revised: 04/23/2020] [Accepted: 04/24/2020] [Indexed: 01/25/2023] Open
Abstract
Simple Summary The development of in vitro embryo production (IVP) in wild species, such as Iberian red deer, can become a daunting challenge since prolonged ovary transport times to the laboratory are often unavoidable. This may have detrimental effects on the quality and developmental capacity of oocytes. We evaluated the effect of supplementing the ovary transport medium with the antioxidant melatonin and observed an increased level of oocyte intracellular reduced glutathione content. Moreover, melatonin enhanced cleavage and blastocyst rates and had a positive effect on embryo quality in terms of the expression of essential embryo development-related genes. In conclusion, the addition of melatonin to the ovary storage medium could mitigate the negative impacts that long transport times may have on oocyte developmental competence and quality of the resulting blastocysts in Iberian red deer. Abstract A major limiting factor for the development of in vitro embryo production (IVP) in wild species, such as Iberian red deer, compared to livestock animals is the poor availability and limited access to biological material. Thus, the use of post-mortem ovaries from slaughtered animals represent a source of oocytes for the large scale production of embryos needed for research and to improve the efficiency of IVP. However, these oocytes are not as developmentally competent as their in vivo counterparts. Moreover, oocytes are usually obtained from ovaries that have been transported for long distances, which may also affect their quality. In order to overcome the issues associated with prolonged storage times of post-mortem material, in this study we examined the effect of melatonin supplementation to the ovary transport medium on oocyte quality, embryo yield, and blastocyst quality in Iberian red deer. When necessary, sheep was used as an experimental model due to the large number of samples required for analysis of oocyte quality parameters. Oocytes were in vitro matured and assessed for early apoptosis; DNA fragmentation; reactive oxygen species (ROS); reduced glutathione (GSH) content, mitochondrial membrane potential, and distribution; and relative abundance of mRNA transcript levels. After in vitro fertilization, embryo rates and blastocyst quality were also investigated. The results revealed that melatonin treatment significantly increased intracellular level of GSH in sheep oocytes. Moreover, the percentage of cleavage and blastocyst yield in red deer was greater compared to the Control group and there was lower abundance of oxidative stress- and apoptosis-related SHC1, TP53, and AKR1B1 mRNA transcripts in blastocysts for the Melatonin group. In conclusion, the supplementation of melatonin to the ovary storage medium had a positive effect on the developmental competence and quality of resulting blastocysts in Iberian red deer.
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Mishra A, Ganesan RK, Dhali A, Reddy IJ. Interaction of apoptosis and pluripotency related transcripts for developmental potential of ovine embryos produced in vitro at different oxygen concentrations. Anim Biotechnol 2020; 32:470-478. [PMID: 32011969 DOI: 10.1080/10495398.2020.1721513] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
The present study in sheep model was to find out the interaction of apoptotic transcripts, that is, Bcl2, Bax, Casp3, PCNA and p53 and pluripotency related transcripts, that is, Sox2, Nanog and Oct4 in ovine embryos produced in vitro at different O2 concentrations (20% and 5% O2) to compare their developmental potential. Oxygen concentrations did not influence the maturation and cleavage rate but the percentage of morula and blastocysts was significantly more at 5% as compared to 20% O2. A significant upregulated expression of Bcl2 and PCNA genes and significantly downregulated expression of Casp3 and p53 were observed in the blastocysts at 5% than those at 20% O2. The expression of Bax was not influenced by the O2 concentration. Among the pluripotency related transcripts, the expression of Oct4 was significantly upregulated and the expression of Sox2 and Nanog was significantly downregulated in embryos at 5% than at 20% O2. The study concluded that the embryos produced in vitro at low O2 (5%) concentration regulate the expression of developmental genes related to apoptosis and pluripotency to improve the developmental potential of embryos as compared to high O2 (20%) concentration.
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Affiliation(s)
- Ashish Mishra
- Animal Physiology Division, ICAR-National Institute of Animal Nutrition and Physiology, Bangalore, India
| | - Ramesh Kumar Ganesan
- Animal Physiology Division, ICAR-National Institute of Animal Nutrition and Physiology, Bangalore, India
| | - Arindam Dhali
- Animal Physiology Division, ICAR-National Institute of Animal Nutrition and Physiology, Bangalore, India
| | - Ippala Janardhan Reddy
- Animal Physiology Division, ICAR-National Institute of Animal Nutrition and Physiology, Bangalore, India
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Sánchez-Ajofrín I, Iniesta-Cuerda M, Sánchez-Calabuig MJ, Peris-Frau P, Martín-Maestro A, Ortiz JA, Del Rocío Fernández-Santos M, Garde JJ, Gutiérrez-Adán A, Soler AJ. Oxygen tension during in vitro oocyte maturation and fertilization affects embryo quality in sheep and deer. Anim Reprod Sci 2020; 213:106279. [PMID: 31987329 DOI: 10.1016/j.anireprosci.2020.106279] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2019] [Revised: 12/20/2019] [Accepted: 01/09/2020] [Indexed: 01/13/2023]
Abstract
Incubation gas atmosphere affects the development of in vitro produced embryos. In this study, there was examination of effects of two different oxygen (O2) tensions (5 % and 21 %) during in vitro maturation (M5 and M21) and/or fertilization (F5 and F21) on embryo production and quality in deer and sheep. There was assessment of the percentage of embryos with cell cleavage occurring, percentage that developed to the blastocyst stage, and analysis of the relative abundance of mRNA transcript for genes important for development to the blastocyst stage. The O2 tension treatment did not affect (P > 0.05) percentage cleavage or blastocyst development in either species. In sheep, there was a greater abundance of SHC1, GPX1, TP53, BAX and NRF1 mRNA transcript (P < 0.05) in M21 F5-derived embryos. In deer, there was a greater abundance of SOD2 mRNA transcript (P < 0.05) when oocytes had been matured under relatively lesser O2, regardless of the tension used during fertilization. There was a lesser abundance of SOX2 mRNA transcript (P < 0.05) in the M5F21 compared to the other three treatment groups. The AKR1B1 mRNA transcript was in greater abundance (P < 0.05) in M21 F21 as compared to M21 F5 and M5F21 group, and there was a greater abundance PLAC8 mRNA transcript (P < 0.05) in M21 F21, as compared to all other treatment groups. In conclusion, while O2 tension had no effect on developmental rates it did affect the relative abundance of mRNA transcript of multiple genes related to important cell functions during development.
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Application of extracellular flux analysis for determining mitochondrial function in mammalian oocytes and early embryos. Sci Rep 2019; 9:16778. [PMID: 31727902 PMCID: PMC6856134 DOI: 10.1038/s41598-019-53066-9] [Citation(s) in RCA: 35] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2019] [Accepted: 10/12/2019] [Indexed: 12/11/2022] Open
Abstract
Mitochondria provide the major source of ATP for mammalian oocyte maturation and early embryo development. Oxygen Consumption Rate (OCR) is an established measure of mitochondrial function. OCR by mammalian oocytes and embryos has generally been restricted to overall uptake and detailed understanding of the components of OCR dedicated to specific molecular events remains lacking. Here, extracellular flux analysis (EFA) was applied to small groups of bovine, equine, mouse and human oocytes and bovine early embryos to measure OCR and its components. Using EFA, we report the changes in mitochondrial activity during the processes of oocyte maturation, fertilisation, and pre-implantation development to blastocyst stage in response to physiological demands in mammalian embryos. Crucially, we describe the real time partitioning of overall OCR to spare capacity, proton leak, non-mitochondrial and coupled respiration – showing that while activity changes over the course of development in response to physiological demand, the overall efficiency is unchanged. EFA is shown to be able to measure mitochondrial function in small groups of mammalian oocytes and embryos in a manner which is robust, rapid and easy to use. EFA is non-invasive and allows real-time determination of the impact of compounds on OCR, facilitating an assessment of the components of mitochondrial activity. This provides proof-of-concept for EFA as an accessible system with which to study mammalian oocyte and embryo metabolism.
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Abstract
SummaryThe optimum oxygen tension for culturing mammalian embryos has been widely debated by the scientific community. While several laboratories have moved to using 5% as the value for oxygen tension, the majority of modern in vitro fertilization (IVF) laboratory programmes still use 20%. Several in vivo studies have shown the oxygen tension measured in the oviduct of mammals fluctuates between 2% and 8% and in cows and primates this values drops to <2% in the uterine milieu. In human IVF, a non-physiological level of 20% oxygen has been used in the past. However, several studies have shown that atmospheric oxygen introduces adverse effects to embryo development, not limited to numerous molecular and cellular physiology events. In addition, low oxygen tension plays a critical role in reducing the high level of detrimental reactive oxygen species within cells, influences embryonic gene expression, helps with embryo metabolism of glucose, and enhances embryo development to the blastocyst stage. Collectively, this improves embryo implantation potential. However, clinical studies have yielded contradictory results. In almost all reports, some level of improvement has been identified in embryo development or implantation, without any observed drawbacks. This review article will examine the recent literature and discusses ongoing efforts to understand the benefits that low oxygen tension can bring to mammal embryo development in vitro.
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Movahed E, Soleimani M, Hosseini S, Akbari Sene A, Salehi M. Aberrant expression of miR-29a/29b and methylation level of mouse embryos after in vitro fertilization and vitrification at two-cell stage. J Cell Physiol 2019; 234:18942-18950. [PMID: 30916357 DOI: 10.1002/jcp.28534] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2018] [Revised: 02/24/2019] [Accepted: 03/05/2019] [Indexed: 12/17/2022]
Abstract
Proper epigenetic modifications during preimplantation embryo development are important for a successful pregnancy. We aim to investigate the putative influence of in vitro fertilization (IVF) and vitrification on DNA methylation in mouse preimplantation embryos. The study groups consisted of blastocyst-derived vitrified two-cell embryos, nonvitrified embryos, and a control group of in vivo derived blastocysts. We assessed developmental competence, global DNA methylation, relative expression levels of miR-29a/29b, and their target genes, Dnmt3a/3b. Vitrified embryos had a lower developmental rate as compared with nonvitrified embryos. There was no significant decrease in blastocyst cell numbers among studied groups, whereas there was a steady decline in DNA methylation after IVF and vitrification. The levels of miR-29a/29b upregulated in the experimental groups as compared with the control group. IVF and vitrification caused Dnmt3a/3b downregulations in blastocysts. The results of this study have suggested that a relationship exists between IVF and embryo vitrification with methylation interruptions in the blastocysts.
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Affiliation(s)
- Elham Movahed
- Department of Anatomy, Faculty of Medicine, Iran University of Medical Sciences, Tehran, Iran
| | - Mansooreh Soleimani
- Department of Anatomy, Faculty of Medicine, Iran University of Medical Sciences, Tehran, Iran
- Cellular and Molecular Research Center, Iran University of Medical Sciences, Tehran, Iran
| | - Sara Hosseini
- Cellular and Molecular Biology Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Azade Akbari Sene
- IVF Department, Shahid Akbar-Abadi Hospital IVF Center, Iran University of Medical Sciences, Tehran, Iran
| | - Mohammad Salehi
- Cellular and Molecular Biology Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran
- Department of Biotechnology, School of Advanced Technologies in Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
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Liao B, Huang H. Structural characterization of a novel polysaccharide from Hericium erinaceus and its protective effects against H2O2-induced injury in human gastric epithelium cells. J Funct Foods 2019. [DOI: 10.1016/j.jff.2019.03.028] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022] Open
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Ashibe S, Miyamoto R, Kato Y, Nagao Y. Detrimental effects of oxidative stress in bovine oocytes during intracytoplasmic sperm injection (ICSI). Theriogenology 2019; 133:71-78. [PMID: 31071617 DOI: 10.1016/j.theriogenology.2019.04.012] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2018] [Revised: 04/06/2019] [Accepted: 04/08/2019] [Indexed: 11/25/2022]
Abstract
Intracytoplasmic sperm injection (ICSI) is an essential technology in animal and human reproduction. However, the developmental competence and pregnancy rate of embryos derived from ICSI are still lower than that from the conventional in vitro fertilization technique. In this report, we focused on reactive oxygen species (ROS) as a potential detrimental factor for ICSI. Experiment 1 was conducted to evaluate the effect of oxidative stress by two different oxygen concentrations (20%: control vs. 5%) in ICSI on the developmental competence (blastocyst rate: day 7, DNA fragmentation rate: day 4) and, ROS concentration and mitochondrial membrane potential of oocytes in ICSI. In the 5% O2 group, the blastocyst rate (29.5%) was higher and DNA fragmentation rate (4.8 ± 1.0%) was lower than those in the control group significantly (12.7% and 18.2 ± 2.4%, respectively, P < 0.05). Also, ROS concentration in the 5% O2 group (12.8 ± 0.7) was significantly lower than that in the control group (47.8 ± 6.9, P < 0.05). In experiment 2, we examined the supplementation of media with reduced glutathione (GSH) during ICSI procedure in an attempt to reduce the oxidative stress. The addition of GSH to the culture medium improved the blastocyst rate (17.6% vs. 30.4%, P < 0.05), and decreased the ROS levels in the oocytes (70.0 ± 7.4 vs. 23.9 ± 4.0, P < 0.05). In conclusion, our present study revealed that oocytes are under oxidative stress in ICSI procedure. Reduction of the oxygen concentration to 5% in the culture environment, or the addition of GSH in to the medium during ICSI procedure can promote the normal embryo development following the ICSI.
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Affiliation(s)
- Shiori Ashibe
- Department of Animal Production Science, United Graduate School of Agricultural Science, Tokyo University of Agriculture and Technology, Tokyo 183-8509, Japan; University Farm, Faculty of Agriculture, Utsunomiya University, 443 Shimokomoriya, Mohka, Tochigi 321-4415, Japan
| | - Rui Miyamoto
- University Farm, Faculty of Agriculture, Utsunomiya University, 443 Shimokomoriya, Mohka, Tochigi 321-4415, Japan
| | - Yoku Kato
- University Farm, Faculty of Agriculture, Utsunomiya University, 443 Shimokomoriya, Mohka, Tochigi 321-4415, Japan
| | - Yoshikazu Nagao
- Department of Animal Production Science, United Graduate School of Agricultural Science, Tokyo University of Agriculture and Technology, Tokyo 183-8509, Japan; University Farm, Faculty of Agriculture, Utsunomiya University, 443 Shimokomoriya, Mohka, Tochigi 321-4415, Japan.
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Qiu X, Xiao X, Martin GB, Li N, Ling W, Wang M, Li Y. Strategies for improvement of cloning by somatic cell nuclear transfer. ANIMAL PRODUCTION SCIENCE 2019. [DOI: 10.1071/an17621] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Somatic cell nuclear transfer (SCNT) is a powerful tool that is being applied in a variety of fields as diverse as the cloning and production of transgenic animals, rescue of endangered species and regenerative medicine. However, cloning efficiency is still very low and SCNT embryos generally show poor developmental competency and many abnormalities. The low efficiency is probably due to incomplete reprogramming of the donor nucleus and most of the developmental problems are thought to be caused by epigenetic defects. Applications of SCNT will, therefore, depend on improvements in the efficiency of production of healthy clones. This review has summarised the progress and strategies that have been used to make improvements in various animal species, especially over the period 2010–2017, including strategies based on histone modification, embryo aggregation and mitochondrial function. There has been considerable investiagation into the mechanisms that underpin each strategy, helping us better understand the nature of genomic reprogramming and nucleus–cytoplasm interactions.
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Pterostilbene exerts a protective effect via regulating tunicamycin-induced endoplasmic reticulum stress in mouse preimplantation embryos. In Vitro Cell Dev Biol Anim 2018; 55:82-93. [DOI: 10.1007/s11626-018-0308-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2018] [Accepted: 10/30/2018] [Indexed: 10/27/2022]
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Melatonin Improves Parthenogenetic Development of Vitrified⁻Warmed Mouse Oocytes Potentially by Promoting G1/S Cell Cycle Progression. Int J Mol Sci 2018; 19:ijms19124029. [PMID: 30551578 PMCID: PMC6321189 DOI: 10.3390/ijms19124029] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2018] [Revised: 12/10/2018] [Accepted: 12/10/2018] [Indexed: 12/17/2022] Open
Abstract
This study aimed to investigate the effect of melatonin on the cell cycle of parthenogenetic embryos derived from vitrified mouse metaphase II (MII) oocytes. Fresh oocytes were randomly allocated into three groups: untreated (control), or vitrified by the open-pulled straw method without (Vitrification group) or with melatonin (MT) supplementation (Vitrification + MT group). After warming, oocytes were parthenogenetically activated and cultured in vitro, then the percentage of embryos in the G1/S phase, the levels of reactive oxygen species (ROS) and glutathione (GSH), and the mRNA expression of cell cycle-related genes (P53, P21 and E2F1) in zygotes and their subsequent developmental potential in vitro were evaluated. The results showed that the vitrification/warming procedures significantly decreased the frequency of the S phase, markedly increased ROS and GSH levels and the expression of P53 and P21 genes, and decreased E2F1 expression in zygotes at the G1 stage and their subsequent development into 2-cell and blastocyst stage embryos. However, when 10−9 mol/L MT was administered for the whole duration of the experiment, the frequency of the S phase in zygotes was significantly increased, while the other indicators were also significantly improved and almost recovered to the normal levels shown in the control. Thus, MT might promote G1-to-S progression via regulation of ROS, GSH and cell cycle-related genes, potentially increasing the parthenogenetic development ability of vitrified–warmed mouse oocytes.
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Ullah O, Li Z, Ali I, Xu L, Liu H, Shah SZA, Fang N. Pterostilbene alleviates hydrogen peroxide-induced oxidative stress via nuclear factor erythroid 2 like 2 pathway in mouse preimplantation embryos. J Reprod Dev 2018; 65:73-81. [PMID: 30429414 PMCID: PMC6379763 DOI: 10.1262/jrd.2018-089] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
Pterostilbene (PTS) in blueberries is a phytoalexin with antioxidant properties. PTS exerts strong cytoprotective effects on various cells via Nuclear Factor Erythroid 2 like 2 (NFE2L2)
pathway. We evaluated the antioxidant PTS treatment in mouse preimplantation embryos. In vitro culture media were supplemented with different concentrations of PTS.
Treatment of zygotes with 0.25 μM PTS improved the development of day 4 blastocysts (P < 0.05). Moreover, H2O2 treatment significantly increased the
reactive oxygen species level and reduced the glutathione level in mouse blastocyst, whereas PTS treatment counteracted these effects. The fluorescence intensity of apoptotic positive cell
was higher in the H2O2 group than in the PTS group. Furthermore, PTS-treated embryos significantly increased the protein expression of NFE2L2 in the nucleus and
decreased Kelch-like ECH-associated protein1 (KEAP1). PTS treatment significantly increased the expression of downstream target genes involved in the NFE2L2 pathway, such as catalase
(CAT), heme oxygenase1 (HMOX1), glutathione peroxidase (GPX), and superoxide dismutase (SOD); these genes confer
cellular protection. In addition, PTS treatment significantly increased the expression of anti-apoptotic B-cell lymphoma 2 (BCL2), with a concomitant reduction in the
apoptotic Bcl-2-associated X protein (BAX) and Caspase-3 genes in the embryo. PTS treatment also increased the protein expression of BCL2 and reduced the
protein expression of BAX in the mouse embryo. In conclusion, PTS activated NFE2L2 signaling pathway in the development of mouse embryos by altering downstream expression of genes involved
in the antioxidant mechanisms and apoptosis.
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Affiliation(s)
- Obaid Ullah
- Department of Animal Science, Agricultural College, Yanbian University, Jilin Province 133002, China
| | - Zhongshu Li
- Department of Animal Science, Agricultural College, Yanbian University, Jilin Province 133002, China
| | - Ihsan Ali
- Department of Animal Science, Agricultural College, Yanbian University, Jilin Province 133002, China
| | - Lijie Xu
- Department of Animal Science, Agricultural College, Yanbian University, Jilin Province 133002, China
| | - Haixing Liu
- Department of Animal Science, Agricultural College, Yanbian University, Jilin Province 133002, China
| | - Syed Zahid Ali Shah
- National Animal Transmissible Spongiform Encephalopathy Laboratory, Key Laboratory of Animal Epidemiology and Zoonosis of Ministry of Agriculture, College of Veterinary Medicine and State Key Laboratory of Agrobiotechnology, China Agricultural University, Beijing 100193, China
| | - Nanzhu Fang
- Department of Animal Science, Agricultural College, Yanbian University, Jilin Province 133002, China
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From Implantation to Birth: Insight into Molecular Melatonin Functions. Int J Mol Sci 2018; 19:ijms19092802. [PMID: 30227688 PMCID: PMC6164374 DOI: 10.3390/ijms19092802] [Citation(s) in RCA: 43] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2018] [Revised: 09/10/2018] [Accepted: 09/14/2018] [Indexed: 12/27/2022] Open
Abstract
Melatonin is a lipophilic hormone synthesized and secreted mainly in the pineal gland, acting as a neuroendocrine transducer of photoperiodic information during the night. In addition to this activity, melatonin has shown an antioxidant function and a key role as regulator of physiological processes related to human reproduction. Melatonin is involved in the normal outcome of pregnancy, beginning with the oocyte quality, continuing with embryo implantation, and finishing with fetal development and parturition. Melatonin has been shown to act directly on several reproductive events, including folliculogenesis, oocyte maturation, and corpus luteum (CL) formation. The molecular mechanism of action has been investigated through several studies which provide solid evidence on the connections between maternal melatonin secretion and embryonic and fetal development. Melatonin administration, reducing oxidative stress and directly acting on its membrane receptors, melatonin thyroid hormone receptors (MT1 and MT2), displays effects on the earliest phases of pregnancy and during the whole gestational period. In addition, considering the reported positive effects on the outcomes of compromised pregnancies, melatonin supplementation should be considered as an important tool for supporting fetal development, opening new opportunities for the management of several reproductive and gestational pathologies.
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Embryotropic effects of vascular endothelial growth factor on porcine embryos produced by in vitro fertilization. Theriogenology 2018; 120:147-156. [PMID: 30121547 DOI: 10.1016/j.theriogenology.2018.07.024] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2018] [Revised: 07/20/2018] [Accepted: 07/23/2018] [Indexed: 12/18/2022]
Abstract
Current research suggests that supplementing in vitro culture (IVC) media with vascular endothelial growth factor (VEGF) may have beneficial effects on the development of porcine embryos in vitro. However, the molecular signaling mechanisms underlying this effect are unclear. Therefore, we aimed to investigate the effects of VEGF on molecular signaling events during in vitro embryonic development of porcine embryos. Porcine oocytes matured in vitro were fertilized, and the resultant zygotes were cultured with 5 ng/mL of VEGF supplemented with or without fetal bovine serum from day 4 till day 7. Without VEGF and/or FBS served as the control group. Real-time quantitative PCR was used to detect expression patterns of apoptosis- and oxidative stress-related genes in day 7 blastocysts (BLs). Early-stage apoptosis was detected by annexin-V assays in day 2 and day 7 embryos. We found that the addition of VEGF throughout the culture period with or without FBS supplementation significantly improved embryo survival and development. Supplementation with VEGF in the IVC medium significantly increased early BL formation (p < 0.05), although addition of FBS on day 4 significantly increased hatched BL formation (p < 0.05) regardless of VEGF supplementation. However, supplementation of media with both VEGF and FBS increased the formation of expanded BLs synergistically. The average total cell numbers per BL were significantly (p < 0.05) higher in embryos supplemented with VEGF and FBS than in those supplemented with either VEGF or FBS alone. We also found that accumulation of reactive oxygen species in VEGF-treated embryos was significantly lower (p < 0.05) than that in untreated embryos. The mRNA levels of caspase-3 were significantly lower (p < 0.05), and those of Bcl-2 and Nrf-2 were significantly higher (p < 0.05) in embryos grown in VEGF-supplemented media than in embryos grown in non-supplemented media. Furthermore, on day 2, the numbers of viable embryos (44.06 ± 3.94%) and blastomeres (67.18 ± 3.60%) were significantly higher (p < 0.05), and the numbers of early apoptotic embryos (55.94 ± 3.94) and blastomeres (23.23 ± 4.22) were significantly lower (p < 0.05) in VEGF-treated BLs than in controls. Furthermore, the numbers of early apoptotic cells in BLs on day 7 were also significantly lower (p < 0.05) in VEGF-treated BLs than in controls. Overall, our results indicate that supplementing IVC media with VEGF during in vitro culture of porcine embryos increases their developmental potential.
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Veshkini A, Mohammadi-Sangcheshmeh A, Ghanem N, Abazari-Kia AH, Mottaghi E, Kamaledini R, Deldar H, Ozturk I, Gastal EL. Oocyte maturation with royal jelly increases embryo development and reduces apoptosis in goats. Anim Reprod 2018; 15:124-134. [PMID: 34122643 PMCID: PMC8186877 DOI: 10.21451/1984-3143-2017-ar986] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
Abstract
Royal jelly (RJ) was supplemented to goat oocyte in vitro maturation (IVM)
medium at three different concentrations (2.5, 5, and 10 mg/ml). Maturation rate, embryo
cleavage, and blastocyst rate were recorded. Gene expression of apoptosis-related transcripts
was investigated in matured oocytes. Percentage of oocytes that reached MII-stage was increased
in RJ-treated groups compared to the control group. Glutathione (GSH) content of mature oocytes
was enhanced when RJ was added to IVM medium at any supplementation compared with control.
Percentage of cleaved embryos and blastocysts was higher in the RJ-treated groups at a concentration
of 5 than in the 2.5 mg/ml and control group. Total number of cells per blastocyst was not different
in the control and RJ-treated group at 5 mg/ml. However, number of apoptotic cells per blastocyst
was higher in the control group than in the RJ-treated group at 5 mg/ml. Expression profile
of Bax, and p53 was down-regulated while
Bcl-2 was up-regulated in oocytes treated with RJ at 5 and 10 mg/ml compared with
the control group. Addition of RJ at concentrations of 5 mg/ml improved embryo production
through increasing maturation rate. RJ seems to improve the IVM microenvironment by reducing
expression of genes inducing apoptosis, enhancing GSH content, and reducing incidence of
apoptosis in blastocysts.
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Affiliation(s)
- Arash Veshkini
- Department of Transgenic Animal Science, Stem Cell Technology Research Center, Tehran, Iran
| | | | - Nasser Ghanem
- Department of Animal Production, Faculty of Agriculture, Cairo University, Giza, Egypt
| | | | - Elmira Mottaghi
- Department of Animal Science and Technology, Faculty of Agriculture and Natural Resources, Tehran Science and Research Branch, Islamic Azad University, Tehran, Iran
| | - Reza Kamaledini
- Department of Animal Science and Technology, Faculty of Agriculture and Natural Resources, Tehran Science and Research Branch, Islamic Azad University, Tehran, Iran
| | - Hamid Deldar
- Department of Animal Science, College of Animal Science and Fisheries, Sari Agricultural Sciences and Natural Resources University, Sari, Iran
| | - Irfan Ozturk
- Department of Biometry Science, Faculty of Agriculture, Harran University, Sanliurfa, Turkey
| | - Eduardo Leite Gastal
- Department of Animal Science, Food and Nutrition, Southern Illinois University, Carbondale, IL, USA
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Preincubation with glutathione ethyl ester improves the developmental competence of vitrified mouse oocytes. J Assist Reprod Genet 2018; 35:1169-1178. [PMID: 29876682 DOI: 10.1007/s10815-018-1215-4] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2018] [Accepted: 05/17/2018] [Indexed: 01/08/2023] Open
Abstract
PURPOSE Oocyte vitrification is currently used for human fertility preservation. However, vitrification damage is a problem caused by decreasing ooplasmic levels of glutathione (GSH). The GSH donor glutathione ethyl ester (GSH-OEt) can significantly increase the GSH content in oocytes. However, it is difficult to obtain oocyte from woman. To overcome this, we used mouse oocytes to replace human oocytes as a model of study. METHODS Oocytes from B6D2F1 mice were preincubated for 30 min with 2.5 mmol/L GSH-OEt (GSH-OEt group), without GSH-OEt preincubation before vitrification (control vitrification group) or in nonvitrified oocytes (fresh group). After thawing, oocytes were fertilized for evaluating the developmental competence of embryos in vitro and in vivo. Immunofluorescence, Polscope equipment and quantitative reverse transcription polymerase chain reaction (RT-qPCR) were used to analyze damage, including mitochondrial distribution, reactive oxygen species (ROS) levels, spindle morphology, and gene expression levels (Bcl-2, BAX, and MnSOD). RESULTS The rates of fertilization, 3-4 cell, blastocyst formation and expanded blastocysts were significantly higher (p < 0.05) in the GSH-OEt group (90.4%; 91.1%; 88.9% and 63.0%) than in the control (80.0%; 81.4%; 77.7% and 50.5%). Provided embryos overcame the 2-cell block and developed to the blastocyst stage, birth rates of all groups were similar. Vitrification altered mitochondrial distribution, increased ROS levels, and caused abnormal spindle morphology; GSH-OEt preincubation could improve such damage. RT-qPCR showed that the expression of Bcl-2 was lower in the control group compared with the GSH-OEt group; BAX and MnSoD expression levels were higher in the control group than in the GSH-OEt group (p < 0.05). CONCLUSIONS The beneficial effect of GSH-OEt preincubation occurred before the 2-cell stage.
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A recovery time after warming restores mitochondrial function and improves developmental competence of vitrified ovine oocytes. Theriogenology 2018; 110:18-26. [DOI: 10.1016/j.theriogenology.2017.12.031] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2017] [Revised: 11/27/2017] [Accepted: 12/15/2017] [Indexed: 11/21/2022]
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Berridge MJ. Vitamin D deficiency: infertility and neurodevelopmental diseases (attention deficit hyperactivity disorder, autism, and schizophrenia). Am J Physiol Cell Physiol 2017; 314:C135-C151. [PMID: 29070492 DOI: 10.1152/ajpcell.00188.2017] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
The process of development depends on a number of signaling systems that regulates the progressive sequence of developmental events. Infertility and neurodevelopmental diseases, such as attention deficit hyperactivity disorder, autism spectrum disorders, and schizophrenia, are caused by specific alterations in these signaling processes. Calcium signaling plays a prominent role throughout development beginning at fertilization and continuing through early development, implantation, and organ differentiation such as heart and brain development. Vitamin D plays a major role in regulating these signaling processes that control development. There is an increase in infertility and an onset of neurodevelopmental diseases when vitamin D is deficient. The way in which vitamin D deficiency acts to alter development is a major feature of this review. One of the primary functions of vitamin D is to maintain the phenotypic stability of both the Ca2+ and redox signaling pathways that play such a key role throughout development.
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Affiliation(s)
- Michael J Berridge
- Laboratory of Molecular Signalling, The Babraham Institute , Cambridge , United Kingdom
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Liang S, Niu YJ, Shin KT, Cui XS. Protective Effects of Coenzyme Q10 on Developmental Competence of Porcine Early Embryos. MICROSCOPY AND MICROANALYSIS : THE OFFICIAL JOURNAL OF MICROSCOPY SOCIETY OF AMERICA, MICROBEAM ANALYSIS SOCIETY, MICROSCOPICAL SOCIETY OF CANADA 2017; 23:849-858. [PMID: 28587702 DOI: 10.1017/s1431927617000617] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Coenzyme Q10 (Q10) plays an important role in the cellular antioxidant system by protecting the cells from free-radical oxidative damage and apoptosis. In the present study, we have investigated the effect of Q10 on the preimplantation development of porcine parthenogenetic embryos, as well as the underlying mechanism. The results showed that 100 μM was the optimal concentration of Q10, which resulted in significantly increased cleavage and blastocyst formation rates and improvement of blastocyst quality. Q10 improved the blastocyst hatching rate and cellular proliferation rate in hatching blastocysts and increased the expression of hatching-related genes. Furthermore, Q10 not only decreased reactive oxygen species production, DNA damage levels, and apoptosis in the blastocysts from H2O2-induced oxidative injury, but also maintained mitochondrial function. Taken together, these results indicate that Q10 has beneficial effects on the development of porcine parthenogenetic embryos by preventing oxidative damage and apoptosis.
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Affiliation(s)
- Shuang Liang
- Department of Animal Science,Chungbuk National University,Cheongju,Chungbuk,361-763,Republic of Korea
| | - Ying Jie Niu
- Department of Animal Science,Chungbuk National University,Cheongju,Chungbuk,361-763,Republic of Korea
| | - Kyung-Tae Shin
- Department of Animal Science,Chungbuk National University,Cheongju,Chungbuk,361-763,Republic of Korea
| | - Xiang-Shun Cui
- Department of Animal Science,Chungbuk National University,Cheongju,Chungbuk,361-763,Republic of Korea
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Effect of potential role of p53 on embryo development arrest induced by H 2O 2 in mouse. In Vitro Cell Dev Biol Anim 2017; 53:344-353. [PMID: 28127704 DOI: 10.1007/s11626-016-0122-1] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2016] [Accepted: 12/08/2016] [Indexed: 10/20/2022]
Abstract
During mammalian embryo development in vitro, mechanism of embryonic development arrest caused by oxidative stress has not been clear so far. The tumor suppressor protein p53 controls cell cycle and programmed cell death by regulating relevant signal pathway. Recent researches revealed that the concentration and distribution of p53 are closely related with reactive oxygen species (ROS). The main objective of this experiment was to explore the role of p53 on embryonic development arrest caused by oxidative stress. Results showed that embryo arrest at two-four-cell stage was significantly increased in the presence of 50 μM H2O2 (39.01 ± 2.74 vs. 77.20 ± 5.34%, p < 0.05). Supplementation of N-acetyl-L-cysteine (NAC) obviously reduced the ratio of development arrest (39.01 ± 2.74 vs. 71.18 ± 5.34%, p < 0.05), which was accompanied by an increase in ROS level, and H2O2 treatment sharply increased messenger RNA (mRNA) expression and protein levels of p53 and p53-ser15. Further increased transcription of GADD45a and p21, a downstream of p53, has an especially significant effect on the mRNA expression of GADD45a. However, expressions of cdc2 were reduced by H2O2. In addition, using Pifithrin-α (PFT-α), the suppresser of p53, the result showed that GADD45a and p21 were significantly downregulated, but the cell cycle gene cdc2 was significantly upregulated, while the protein level of p53 and p53-ser15 was significantly decreased. Taken together, these results demonstrate that ROS could activate p53 and regulate p53 target genes to influence early embryo development in in vitro culture.
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Improved development by melatonin treatment after vitrification of mouse metaphase II oocytes. Cryobiology 2016; 73:335-342. [PMID: 27725165 DOI: 10.1016/j.cryobiol.2016.09.171] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2016] [Revised: 09/24/2016] [Accepted: 09/26/2016] [Indexed: 12/16/2022]
Abstract
The study was aimed to investigate the effect of melatonin on the development potential of mouse MII oocytes after cryopreservation. Mouse MII oocytes were subjected first to vitrification/warming and 2 h of in vitro culture (phase 1), then to parthenogenetic activation (PA) followed by in vitro culture of parthenogenetic embryos (phase 2). Different concentrations of melatonin (0, 10-9, 10-6 mol/L) were added to the medium during either phase 1, phase 2 or both phases. The fresh oocytes were used as control. When melatonin was used during both phases, 10-9 mol/L melatonin-treated group showed similar rates of cleavage and 4-cell embryo development compared with control, which were significantly higher than those of melatonin-free group, while the rates in either 10-6 mol/L melatonin-treated or melatonin-free groups were significantly lower than that in control. When 10-9 mol/L melatonin was added during either phase 1 or phase 2, both cleavage and 4-cell embryo development rates of either group were significantly lower than those of control. After oocyte vitrification/warming and PA, the ROS levels increased significantly and maternal-to-zygotic transition (MZT) related genes (Dcp1a, Dcp2, Hspa1a, Eif1ax, Pou5f1, Sox2) expression were disorganized. However, after 10-9 mol/L melatonin supplementation, the ROS levels decreased significantly compared with melatonin-free group, and the gene expressions were almost recovered to normal level of control group. These results demonstrated that 10-9 mol/L melatonin supplementation could increase the developmental potential of vitrified-warmed mouse MII oocytes, which may result from ROS scavenging activities and recovery of normal levels of the expressions of MZT-related genes.
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Kelley RL, Gardner DK. Combined effects of individual culture and atmospheric oxygen on preimplantation mouse embryos in vitro. Reprod Biomed Online 2016; 33:537-549. [PMID: 27569702 DOI: 10.1016/j.rbmo.2016.08.003] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2016] [Revised: 08/08/2016] [Accepted: 08/09/2016] [Indexed: 10/21/2022]
Abstract
Embryos are routinely cultured individually, although this can reduce blastocyst development. Culture in atmospheric (20%) oxygen is also common, despite multiple detrimental effects on embryos. Although frequently occurring together, the consequences of this combination are unknown. Mouse embryos were cultured individually or grouped, under physiological (5%) or atmospheric (20%) oxygen. Embryos were assessed by time-lapse and blastocyst cell allocation. Compared with the control group (5% oxygen group culture), 5-cell cleavage (t5) was delayed in 5% oxygen individual culture and 20% oxygen group culture (59.91 ± 0.23, 60.70 ± 0.29, 63.06 ± 0.32 h post-HCG respectively, P < 0.05). Embryos in 20% oxygen individual culture were delayed earlier (3-cell cleavage), and at t5 cleaved later than embryos in other treatments (66.01 ± 0.40 h, P < 0.001), this delay persisting to blastocyst hatching. Compared with controls, hatching rate and cells per blastocyst were reduced in 5% oxygen single culture and 20% oxygen group culture (134.1 ± 3.4, 104.5 ± 3.2, 73.4 ± 2.2 cells, P < 0.001), and were further reduced in 20% oxygen individual culture (57.0 ± 2.8 cells, P < 0.001), as was percentage inner cell mass. These data indicate combining individual culture and 20% oxygen is detrimental to embryo development.
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Affiliation(s)
- Rebecca L Kelley
- School of BioSciences, The University of Melbourne, Parkville, Victoria 3010, Australia.
| | - David K Gardner
- School of BioSciences, The University of Melbourne, Parkville, Victoria 3010, Australia.
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Yang X, Xu R, Lin Y, Zhen Y, Wei J, Hu G, Sun H. Recombinant adenovirus of human p66Shc inhibits MCF-7 cell proliferation. Sci Rep 2016; 6:31534. [PMID: 27530145 PMCID: PMC4987618 DOI: 10.1038/srep31534] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2016] [Accepted: 07/21/2016] [Indexed: 01/03/2023] Open
Abstract
The aim of this work was to construct a human recombinant p66Shc adenovirus and to investigate the inhibition of recombinant p66Shc adenovirus on MCF-7 cells. The recombinant adenovirus expression vector was constructed using the Adeno-X Adenoviral System 3. Inhibition of MCF-7 cell proliferation was determined by MTT. Intracellular ROS was measured by DCFH-DA fluorescent probes, and 8-OHdG was detected by ELISA. Cell apoptosis and the cell cycle were assayed by flow cytometry. Western blot were used to observe protein expression. p66Shc expression was upregulated in 4 cell lines after infection. The inhibitory effect of p66Shc recombinant adenovirus on MCF-7 cells was accompanied by enhanced ROS and 8-OHdG. However, no significant differences were observed in the cell apoptosis rate. The ratio of the cell cycle G2/M phase showed a significant increase. Follow-up experiments demonstrated that the expressions of p53, p-p53, cyclin B1 and CDK1 were upregulated with the overexpression of p66Shc. The Adeno-X Adenoviral System 3 can be used to efficiently construct recombinant adenovirus containing p66Shc gene, and the Adeno-X can inhibit the proliferation of MCF-7 cells by inducing cell cycle arrest at the G2/M phase. These results suggested that p66Shc may be a key target for clinical cancer therapy.
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Affiliation(s)
- Xiaoshan Yang
- Tianjin Key Laboratory of Biomaterial Research, Institute of Biomedical Engineering, Peking Union Medical College &Chinese Academy of Medical Sciences, Tianjin 300192, China.,The key Laboratory of Geriatrics, Beijing Hospital &Beijing Institute of Geriatrics, Ministry of Health, Beijing, 100730, China
| | - Rong Xu
- Tianjin Key Laboratory of Biomaterial Research, Institute of Biomedical Engineering, Peking Union Medical College &Chinese Academy of Medical Sciences, Tianjin 300192, China.,The key Laboratory of Geriatrics, Beijing Hospital &Beijing Institute of Geriatrics, Ministry of Health, Beijing, 100730, China
| | - Yajun Lin
- The key Laboratory of Geriatrics, Beijing Hospital &Beijing Institute of Geriatrics, Ministry of Health, Beijing, 100730, China
| | - Yongzhan Zhen
- Department of Histology and Embryology, College of Basic Medical, Hebei United University, Tangshan, 063000, China
| | - Jie Wei
- The key Laboratory of Geriatrics, Beijing Hospital &Beijing Institute of Geriatrics, Ministry of Health, Beijing, 100730, China
| | - Gang Hu
- The key Laboratory of Geriatrics, Beijing Hospital &Beijing Institute of Geriatrics, Ministry of Health, Beijing, 100730, China
| | - Hongfan Sun
- Tianjin Key Laboratory of Biomaterial Research, Institute of Biomedical Engineering, Peking Union Medical College &Chinese Academy of Medical Sciences, Tianjin 300192, China
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Edwards NA, Watson AJ, Betts DH. P66Shc, a key regulator of metabolism and mitochondrial ROS production, is dysregulated by mouse embryo culture. Mol Hum Reprod 2016; 22:634-47. [PMID: 27385725 DOI: 10.1093/molehr/gaw043] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2016] [Accepted: 06/17/2016] [Indexed: 12/28/2022] Open
Abstract
STUDY QUESTION Do high oxygen tension and high glucose concentrations dysregulate p66Shc (Src homologous-collagen homologue adaptor protein) expression during mouse preimplantation embryo culture? SUMMARY ANSWER Compared with mouse blastocysts in vivo, P66Shc mRNA and protein levels in blastocysts maintained in vitro increased under high oxygen tension (21%), but not high glucose concentration. WHAT IS KNOWN ALREADY Growth in culture adversely impacts preimplantation embryo development and alters the expression levels of the oxidative stress adaptor protein p66Shc, but it is not known if p66Shc expression is linked to metabolic changes observed in cultured embryos. STUDY DESIGN, SAMPLES/MATERIALS, METHODS We used a standard wild-type CD1 mouse model of preimplantation embryo development and embryo culture with different atmospheric oxygen tension and glucose media concentrations. Changes to p66Shc expression in mouse blastocysts were measured using quantitative RT-PCR, immunoblotting and immunofluorescence followed by confocal microscopy. Changes to oxidative phosphorylation metabolism were measured by total ATP content and superoxide production. Statistical analyses were performed on a minimum of three experimental replicates using Students' t-test or one-way ANOVA. MAIN RESULTS AND THE ROLE OF CHANCE P66Shc is basally expressed during in vivo mouse preimplantation development. Within in vivo blastocysts, p66Shc is primarily localized to the cell periphery of the trophectoderm. Blastocysts cultured under atmospheric oxygen levels have significantly increased p66Shc mRNA transcript and protein abundances compared to in vivo controls (P < 0.05). However, the ratio of phosphorylated serine 36 (S36) p66Shc to total p66Shc decreased in culture regardless of O2 atmosphere used, supporting a shift in the mitochondrial fraction of p66Shc. Total p66Shc localized to the cell periphery of the blastocyst trophectoderm and phosphorylated S36 p66Shc displayed nuclear and cytoplasmic immunoreactivity, suggesting distinct compartmentalization of phosphorylated S36 p66Shc and the remaining p66Shc fraction. Glucose concentration in the culture medium did not significantly change p66Shc mRNA or protein abundance or its localization. Blastocysts cultured under low or high oxygen conditions exhibited significantly decreased cellular ATP and increased superoxide production compared to in vivo derived embryos (P < 0.05). LIMITATIONS/REASONS FOR CAUTION This study associates embryonic p66Shc expression levels with metabolic abnormalities but does not directly implicate p66Shc in metabolic changes. Additionally, we used one formulation of embryo culture medium that differs from that used in other mouse model studies and from clinical media used to support human blastocyst development. Our findings may, therefore, be limited to this media, or may be a species-specific phenomenon. WIDER IMPLICATIONS OF THE FINDINGS This is the first study to show distinct immunolocalization of p66Shc to the trophectoderm of mouse blastocysts and that its levels are abnormally increased in embryos exposed to culture conditions. Changes in p66Shc expression and/or localization could possibly serve as a molecular marker of embryo viability for clinical applications. The outcomes provide insight into the potential metabolic role of p66Shc. Metabolic anomalies are induced even under the current optimal culture conditions, which could negatively impact trophectoderm and placental development. LARGE SCALE DATA Not applicable. STUDY FUNDING AND COMPETING INTERESTS Canadian Institutes of Health Research (CIHR) operating funds, Ontario Graduate Scholarship (OGS). There are no competing interests.
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Affiliation(s)
- Nicole A Edwards
- Departments of Physiology and Pharmacology, The University of Western Ontario, Canada
| | - Andrew J Watson
- Departments of Physiology and Pharmacology, The University of Western Ontario, Canada Obstetrics and Gynaecology, Schulich School of Medicine & Dentistry, The University of Western Ontario, Canada The Children's Health Research Institute (CHRI), Lawson Health Research Institute, London, Ontario, Canada N6A 5C1
| | - Dean H Betts
- Departments of Physiology and Pharmacology, The University of Western Ontario, Canada Obstetrics and Gynaecology, Schulich School of Medicine & Dentistry, The University of Western Ontario, Canada The Children's Health Research Institute (CHRI), Lawson Health Research Institute, London, Ontario, Canada N6A 5C1
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Remião MH, Lucas CG, Domingues WB, Silveira T, Barther NN, Komninou ER, Basso AC, Jornada DS, Beck RCR, Pohlmann AR, Junior ASV, Seixas FK, Campos VF, Guterres SS, Collares T. Melatonin delivery by nanocapsules during in vitro bovine oocyte maturation decreased the reactive oxygen species of oocytes and embryos. Reprod Toxicol 2016; 63:70-81. [PMID: 27233482 DOI: 10.1016/j.reprotox.2016.05.016] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2016] [Revised: 04/23/2016] [Accepted: 05/20/2016] [Indexed: 12/25/2022]
Abstract
In this work, a promising approach to increase the advantageous properties of melatonin through its encapsulation into lipid-core nanocapsules (LNC) was examined. Oocytes were treated during in vitro maturation with non-encapsulated melatonin (Mel), melatonin-loaded lipid-core nanocapsules (Mel-LNC), and unloaded LNC. Cytotoxicity, meiotic maturation rate, development to the blastocyst stage, reactive oxygen species (ROS) and glutathione levels, mean cell number and apoptotic cell/blastocyst, and mRNA quantification were evaluated. Both Mel and Mel-LNC enhanced in vitro embryo production, however, Mel-LNC proved to be more effective at decreasing ROS levels and the apoptotic cell number/blastocyst, increasing the cleavage and blastocyst rates, up-regulating the GPX1 and SOD2 genes, and down-regulating the CASP3 and BAX genes. Mel-LNC could penetrate into oocytes and remain inside the cells until they reach the blastocyst stage. In conclusion, when melatonin was encapsulated in LNC and applied during in vitro oocyte maturation, some quality aspects of the blastocysts were improved.
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Affiliation(s)
- Mariana Härter Remião
- Programa de Pós-Graduação em Biotecnologia (PPGB), Grupo de Pesquisa em Oncologia Celular e Molecular, Biotecnologia/Centro de Desenvolvimento Tecnológico, Universidade Federal de Pelotas, Pelotas, 96010-900 RS, Brazil
| | - Caroline Gomes Lucas
- Programa de Pós-Graduação em Biotecnologia (PPGB), Grupo de Pesquisa em Oncologia Celular e Molecular, Biotecnologia/Centro de Desenvolvimento Tecnológico, Universidade Federal de Pelotas, Pelotas, 96010-900 RS, Brazil
| | - William Borges Domingues
- Programa de Pós-Graduação em Biotecnologia (PPGB), Grupo de Pesquisa em Oncologia Celular e Molecular, Biotecnologia/Centro de Desenvolvimento Tecnológico, Universidade Federal de Pelotas, Pelotas, 96010-900 RS, Brazil
| | - Tony Silveira
- Programa de Pós-Graduação em Biotecnologia (PPGB), Grupo de Pesquisa em Oncologia Celular e Molecular, Biotecnologia/Centro de Desenvolvimento Tecnológico, Universidade Federal de Pelotas, Pelotas, 96010-900 RS, Brazil
| | - Nathaniele Nebel Barther
- Programa de Pós-Graduação em Biotecnologia (PPGB), Grupo de Pesquisa em Oncologia Celular e Molecular, Biotecnologia/Centro de Desenvolvimento Tecnológico, Universidade Federal de Pelotas, Pelotas, 96010-900 RS, Brazil
| | - Eliza Rossi Komninou
- Programa de Pós-Graduação em Biotecnologia (PPGB), Grupo de Pesquisa em Oncologia Celular e Molecular, Biotecnologia/Centro de Desenvolvimento Tecnológico, Universidade Federal de Pelotas, Pelotas, 96010-900 RS, Brazil
| | | | - Denise Soledade Jornada
- Faculdade de Farmácia, Universidade Federal do Rio Grande do Sul, Av. Ipiranga, 2752, Porto Alegre 90610-000, RS, Brazil
| | - Ruy Carlos Ruver Beck
- Faculdade de Farmácia, Universidade Federal do Rio Grande do Sul, Av. Ipiranga, 2752, Porto Alegre 90610-000, RS, Brazil
| | - Adriana Raffin Pohlmann
- Departamento de Química Orgânica, Instituto de Química, Universidade Federal do Rio Grande do Sul, Porto Alegre 91501-970, RS, Brazil
| | - Antonio Sérgio Varela Junior
- Instituto de Ciências Biológicas, Universidade Federal do Rio Grande, Universidade Federal do Rio Grande, Rio Grande 96201-900, RS, Brazil
| | - Fabiana Kömmling Seixas
- Programa de Pós-Graduação em Biotecnologia (PPGB), Grupo de Pesquisa em Oncologia Celular e Molecular, Biotecnologia/Centro de Desenvolvimento Tecnológico, Universidade Federal de Pelotas, Pelotas, 96010-900 RS, Brazil
| | - Vinicius Farias Campos
- Programa de Pós-Graduação em Biotecnologia (PPGB), Grupo de Pesquisa em Oncologia Celular e Molecular, Biotecnologia/Centro de Desenvolvimento Tecnológico, Universidade Federal de Pelotas, Pelotas, 96010-900 RS, Brazil
| | - Silvia Stanisçuaski Guterres
- Faculdade de Farmácia, Universidade Federal do Rio Grande do Sul, Av. Ipiranga, 2752, Porto Alegre 90610-000, RS, Brazil
| | - Tiago Collares
- Programa de Pós-Graduação em Biotecnologia (PPGB), Grupo de Pesquisa em Oncologia Celular e Molecular, Biotecnologia/Centro de Desenvolvimento Tecnológico, Universidade Federal de Pelotas, Pelotas, 96010-900 RS, Brazil.
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40
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Zhao XM, Hao HS, Du WH, Zhao SJ, Wang HY, Wang N, Wang D, Liu Y, Qin T, Zhu HB. Melatonin inhibits apoptosis and improves the developmental potential of vitrified bovine oocytes. J Pineal Res 2016; 60:132-41. [PMID: 26485053 DOI: 10.1111/jpi.12290] [Citation(s) in RCA: 111] [Impact Index Per Article: 13.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/01/2015] [Accepted: 10/16/2015] [Indexed: 12/18/2022]
Abstract
Vitrification of oocytes has been shown to be closely associated with increased levels of reactive oxygen species (ROS) and apoptotic events. However, little information is available the effect of melatonin on the ROS levels and apoptotic events in vitrified oocytes. Therefore, we studied the effect of melatonin on ROS and apoptotic events in vitrified bovine oocytes by supplementing vitrification solution or in vitro maturation (IVM) and vitrification solution with 10(-9) m melatonin. We analyzed the ROS, mitochondrial Ca(2+) (mCa(2+) ) and membrane potential (ΔΨm), externalization of phosphatidylserine (PS), caspase-3 activation, DNA fragmentation, mRNA expression levels of Bax and Bcl2 l1, and developmental potential of vitrified bovine oocytes. Vitrified bovine oocytes exhibited increased levels of ROS, mCa(2+) , Bax mRNA, and caspase-3 protein and higher rates of PS externalization and DNA fragmentation, and decreased ΔΨm and Bcl2 l1 mRNA expression level. However, melatonin supplementation in vitrification solution or IVM and vitrification solution significantly decreased the levels of ROS, mCa(2+) , Bax mRNA expression, and caspase-3 protein, and PS externalization and DNA fragmentation rates, and increased the ΔΨm and Bcl2 l1 mRNA expression level in vitrified oocytes, resulting in an increased developmental ability of vitrified bovine oocytes after parthenogenetic activation. The developmental ability of vitrified oocytes with melatonin supplementation in IVM and vitrification solution was similar to that of fresh ones. This study showed that supplementing the IVM and vitrification medium or vitrification medium with 10(-9) m melatonin significantly decreased the ROS level and inhibited apoptotic events of vitrified bovine oocytes, consequently increasing their developmental potential.
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Affiliation(s)
- Xue-Ming Zhao
- Embryo Biotechnology and Reproduction Laboratory, Institute of Animal Sciences (IAS), Chinese Academy of Agricultural Sciences (CAAS), Beijing, China
| | - Hai-Sheng Hao
- Embryo Biotechnology and Reproduction Laboratory, Institute of Animal Sciences (IAS), Chinese Academy of Agricultural Sciences (CAAS), Beijing, China
| | - Wei-Hua Du
- Embryo Biotechnology and Reproduction Laboratory, Institute of Animal Sciences (IAS), Chinese Academy of Agricultural Sciences (CAAS), Beijing, China
| | - Shan-Jiang Zhao
- Embryo Biotechnology and Reproduction Laboratory, Institute of Animal Sciences (IAS), Chinese Academy of Agricultural Sciences (CAAS), Beijing, China
| | - Hao-Yu Wang
- Embryo Biotechnology and Reproduction Laboratory, Institute of Animal Sciences (IAS), Chinese Academy of Agricultural Sciences (CAAS), Beijing, China
| | - Na Wang
- Embryo Biotechnology and Reproduction Laboratory, Institute of Animal Sciences (IAS), Chinese Academy of Agricultural Sciences (CAAS), Beijing, China
| | - Dong Wang
- Embryo Biotechnology and Reproduction Laboratory, Institute of Animal Sciences (IAS), Chinese Academy of Agricultural Sciences (CAAS), Beijing, China
| | - Yan Liu
- Embryo Biotechnology and Reproduction Laboratory, Institute of Animal Sciences (IAS), Chinese Academy of Agricultural Sciences (CAAS), Beijing, China
| | - Tong Qin
- Embryo Biotechnology and Reproduction Laboratory, Institute of Animal Sciences (IAS), Chinese Academy of Agricultural Sciences (CAAS), Beijing, China
| | - Hua-Bin Zhu
- Embryo Biotechnology and Reproduction Laboratory, Institute of Animal Sciences (IAS), Chinese Academy of Agricultural Sciences (CAAS), Beijing, China
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Lucas CG, Remião MH, Komninou ER, Domingues WB, Haas C, Leon PMMD, Campos VF, Ourique A, Guterres SS, Pohlmann AR, Basso AC, Seixas FK, Beck RCR, Collares T. Tretinoin-loaded lipid-core nanocapsules decrease reactive oxygen species levels and improve bovine embryonic development during in vitro oocyte maturation. Reprod Toxicol 2015; 58:131-9. [DOI: 10.1016/j.reprotox.2015.10.004] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2014] [Revised: 10/04/2015] [Accepted: 10/09/2015] [Indexed: 10/22/2022]
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Mallol A, Piqué L, Santaló J, Ibáñez E. Morphokinetics of cloned mouse embryos treated with epigenetic drugs and blastocyst prediction. Reproduction 2015; 151:203-14. [PMID: 26621919 DOI: 10.1530/rep-15-0354] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2015] [Accepted: 11/30/2015] [Indexed: 12/31/2022]
Abstract
Time-lapse monitoring of somatic cell nuclear transfer (SCNT) embryos may help to predict developmental success and increase birth and embryonic stem cells (ESC) derivation rates. Here, the development of ICSI fertilized embryos and of SCNT embryos, non-treated or treated with either psammaplin A (PsA) or vitamin C (VitC), was monitored, and the ESC derivation rates from the resulting blastocysts were determined. Blastocyst rates were similar among PsA-treated and VitC-treated SCNT embryos and ICSI embryos, but lower for non-treated SCNT embryos. ESC derivation rates were higher in treated SCNT embryos than in non-treated or ICSI embryos. Time-lapse microscopy analysis showed that non-treated SCNT embryos had a delayed development from the second division until compaction, lower number of blastomeres at compaction and longer compaction and cavitation durations compared with ICSI ones. Treatment of SCNT embryos with PsA further increased this delay whereas treatment with VitC slightly reduced it, suggesting that both treatments act through different mechanisms, not necessarily related to their epigenetic effects. Despite these differences, the time of completion of the third division, alone or combined with the duration of compaction and/or the presence of fragmentation, had a strong predictive value for blastocyst formation in all groups. In contrast, we failed to predict ESC derivation success from embryo morphokinetics. Time-lapse technology allows the selection of SCNT embryos with higher developmental potential and could help to increase cloning outcomes. Nonetheless, further studies are needed to find reliable markers for full-term development and ESC derivation success.
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Affiliation(s)
- Anna Mallol
- Unitat de Biologia Cel.lularDepartament de Biologia Cel.lular, Fisiologia i Immunologia, Facultat de Biociències, Universitat Autònoma de Barcelona, 08193 Bellaterra, Spain
| | - Laia Piqué
- Unitat de Biologia Cel.lularDepartament de Biologia Cel.lular, Fisiologia i Immunologia, Facultat de Biociències, Universitat Autònoma de Barcelona, 08193 Bellaterra, Spain
| | - Josep Santaló
- Unitat de Biologia Cel.lularDepartament de Biologia Cel.lular, Fisiologia i Immunologia, Facultat de Biociències, Universitat Autònoma de Barcelona, 08193 Bellaterra, Spain
| | - Elena Ibáñez
- Unitat de Biologia Cel.lularDepartament de Biologia Cel.lular, Fisiologia i Immunologia, Facultat de Biociències, Universitat Autònoma de Barcelona, 08193 Bellaterra, Spain
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Su J, Wang Y, Xing X, Zhang L, Sun H, Zhang Y. Melatonin significantly improves the developmental competence of bovine somatic cell nuclear transfer embryos. J Pineal Res 2015; 59:455-68. [PMID: 26331949 DOI: 10.1111/jpi.12275] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/02/2015] [Accepted: 08/28/2015] [Indexed: 01/08/2023]
Abstract
Somatic cell nuclear transfer (SCNT) is a promising technology, but its application is hampered by its low efficiency. Hence, the majority of SCNT embryos fail to develop to term. In this study, the antioxidant melatonin reduced apoptosis and reactive oxygen species (ROS) in bovine SCNT embryos. It also increased cell number, inner cell mass (ICM) cell numbers, and the ratio of ICM to total cells while improving the development of bovine SCNT embryos in vitro and in vivo. Gene expression analysis showed that melatonin suppressed the expression of the pro-apoptotic genes p53 and Bax and stimulated the expression of the antioxidant genes SOD1 and Gpx4, the anti-apoptotic gene BCL2L1, and the pluripotency-related gene SOX2 in SCNT blastocysts. We also analyzed the epigenetic modifications in bovine in vitro fertilization, melatonin-treated, and untreated SCNT embryos. The global H3K9ac levels of melatonin-treated SCNT embryos at the four-cell stage were higher than those of the untreated SCNT embryos. We conclude that exogenous melatonin affects the expression of genes related to apoptosis, antioxidant function, and development. Moreover, melatonin reduced apoptosis and ROS in bovine SCNT embryos and enhanced blastocyst quality, thereby ultimately improving bovine cloning efficiency.
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Affiliation(s)
- Jianmin Su
- College of Veterinary Medicine, Northwest A&F University, Key Laboratory of Animal Biotechnology of the Ministry of Agriculture, Yangling, Shaanxi Province, China
| | - Yongsheng Wang
- College of Veterinary Medicine, Northwest A&F University, Key Laboratory of Animal Biotechnology of the Ministry of Agriculture, Yangling, Shaanxi Province, China
| | - Xupeng Xing
- College of Veterinary Medicine, Northwest A&F University, Key Laboratory of Animal Biotechnology of the Ministry of Agriculture, Yangling, Shaanxi Province, China
| | - Lei Zhang
- College of Veterinary Medicine, Northwest A&F University, Key Laboratory of Animal Biotechnology of the Ministry of Agriculture, Yangling, Shaanxi Province, China
| | - Hongzheng Sun
- College of Veterinary Medicine, Northwest A&F University, Key Laboratory of Animal Biotechnology of the Ministry of Agriculture, Yangling, Shaanxi Province, China
| | - Yong Zhang
- College of Veterinary Medicine, Northwest A&F University, Key Laboratory of Animal Biotechnology of the Ministry of Agriculture, Yangling, Shaanxi Province, China
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Li W, Cheng K, Zhang Y, Meng Q, Zhu S, Zhou G. No effect of exogenous melatonin on development of cryopreserved metaphase II oocytes in mouse. J Anim Sci Biotechnol 2015; 6:42. [PMID: 26380081 PMCID: PMC4568589 DOI: 10.1186/s40104-015-0041-0] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2015] [Accepted: 09/07/2015] [Indexed: 11/17/2022] Open
Abstract
Background This study was conducted to investigate effect of exogenous melatonin on the development of mouse mature oocytes after cryopreservation. Results First, mouse metaphase II (MII) oocytes were vitrified in the open-pulled straws (OPS). After warming, they were cultured for 1 h in M2 medium containing melatonin at different concentrations (0, 10−9, 10−7, 10−5, 10−3 mol/L). Then the oocytes were used to detect reactive oxygen species (ROS) and glutathione (GSH) levels (fluorescence microscopy), and the developmental potential after parthenogenetic activation. The experimental results showed that the ROS level and cleavage rate in 10−3 mol/L melatonin group was significantly lower than that in melatonin-free group (control). The GSH levels and blastocyst rates in all melatonin-treated groups were similar to that in control. Based on the above results, we detected the expression of gene Hsp90aa1, Hsf1, Hspa1b, Nrf2 and Bcl-x1 with qRT-PCR in oocytes treated with 10−7, or 10−3 mol/L melatonin and untreated control. After warming and culture for 1 h, the oocytes showed higher Hsp90aa1 expression in 10−7 mol/L melatonin-treated group than in the control (P < 0.05); the Hsf1, Hsp90aa1 and Bcl-x1 expression were significantly decreased in 10−3 mol/L melatonin-treated group when compared to the control. Based on the above results and previous research, we detected the development of vitrified-warmed oocytes treated with either 10−7 or 0 mol/L melatonin by in vitro fertilization. No difference was observed between them. Conclusions Our results indicate that the supplementation of melatonin (10−9 to 10−3 mol/L) in culture medium and incubation for 1 h did not improve the subsequent developmental potential of vitrified-warmed mouse MII oocytes, even if there were alteration in gene expression.
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Affiliation(s)
- Wei Li
- Institute of Animal Genetics and Breeding, College of Animal Science and Technology, Sichuan Agricultural University (Chengdu Campus), Wenjiang, 611130 P.R. China ; Institute of Animal Genetics and Breeding, College of Animal Science and Technology, China Agricultural University, Beijing, 100193 P.R. China
| | - Keren Cheng
- Department of Animal, Dairy, and Veterinary Sciences, Utah State University, Logan, Utah USA
| | - Yue Zhang
- Institute of Animal Genetics and Breeding, College of Animal Science and Technology, Sichuan Agricultural University (Chengdu Campus), Wenjiang, 611130 P.R. China
| | - Qinggang Meng
- Nanjing Biomedical Research Institute of Nanjing University, Nanjing, 210089 P.R. China
| | - Shi'en Zhu
- Department of Animal, Dairy, and Veterinary Sciences, Utah State University, Logan, Utah USA
| | - Guangbin Zhou
- Institute of Animal Genetics and Breeding, College of Animal Science and Technology, Sichuan Agricultural University (Chengdu Campus), Wenjiang, 611130 P.R. China
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Fakruzzaman M, Ghanem N, Bang JI, Ha AN, Lee KL, Sohn SH, Wang Z, Lee DS, Kong IK. Effect of peroxiredoxin II on the quality and mitochondrial activity of pre-implantation bovine embryos. Anim Reprod Sci 2015; 159:172-83. [DOI: 10.1016/j.anireprosci.2015.06.015] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2014] [Revised: 05/26/2015] [Accepted: 06/22/2015] [Indexed: 10/23/2022]
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46
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Lee HH, Lee HJ, Kim HJ, Lee JH, Ko Y, Kim SM, Lee JR, Suh CS, Kim SH. Effects of antifreeze proteins on the vitrification of mouse oocytes: comparison of three different antifreeze proteins. Hum Reprod 2015. [PMID: 26202918 DOI: 10.1093/humrep/dev170] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
STUDY QUESTION Can antifreeze proteins (AFPs) from three different sources improve the efficacy of mouse oocyte vitrification? SUMMARY ANSWER Treatment with AFPs can improve both murine oocyte quality and embryo development, and reduce reactive oxygen species (ROS) production in vitrified-warmed oocytes. WHAT IS KNOWN ALREADY A previous study discovered that vitrification of immature oocytes and 2-cell stage embryos of mice augmented with antifreeze glycoproteins at 40 mg/ml dramatically improved the morphological integrity of the samples, suggesting that AFPs have the ability to inhibit ice formation and stabilize the plasma membrane. STUDY DESIGN, SIZE, DURATION Metaphase II oocytes were obtained from 4-week-old BD-F1 mice. AFPs from bacteria (Flavobacterium frigoris ice-binding protein (FfIBP)), yeast (Glaciozyma sp. ice-binding protein (LeIBP)) and fish (Type III AFP) were added to the vitrification and warming solutions individually. Survival and development, meiotic spindle organization, intracellular ROS, mitochondrial activity, DNA double-strand breaks (DSBs) and repair of damaged DNA were analyzed. PARTICIPANTS/MATERIALS, SETTING, METHODS Vitrification of oocytes was performed with the CryoTop (equilibration solution: 7.5% ethylene glycol (EG) and 7.5% 1,2-propandiol (PROH) for 5 min; vitrification solution: 15% EG, 15% PROH and 0.5 M sucrose for 1 min). Warming was performed in three steps with decreasing concentrations of sucrose (1.0, 0.5 and 0.25 M sucrose). MAIN RESULTS AND THE ROLE OF CHANCE AFP treatment can improve murine oocyte quality and embryo development. Survival rates, cleavage rates and blastocyst rates (blastocyst per cleaved and per survived oocytes) of oocytes in AFP-treated groups were significantly higher than those in the control group [75.0, 89.0, 90.0 and 85.0% for survival rate (P = 0.012); 58.7, 89.0, 87.8 and 81.2% for cleavage rate (P = 0.003); 52.3, 87.7, 78.5 and 76.8% for blastocyst per cleaved oocytes (P < 0.01); 30.7, 78.0, 68.9 and 62.4% for blastocyst per survived oocytes (P < 0.01) in control, FfIBP, LeIBP and Type III AFP-treated groups, respectively]. The mean (±SD) number of apoptotic blastomeres per blastocyst was significantly lower in AFP-treated groups than in the control group (9.1 ± 1.0, 2.0 ± 1.7, 2.3 ± 1.2 and 2.7 ± 2.4 in control, FfIBP, LeIBP and Type III AFP-treated groups, respectively, P = 0.040). FfIBP treatment was the most effective in maintaining normal meiotic spindle organization and chromosome alignment (52.0, 92.0, 80.0 and 83.0% in control, FfIBP, LeIBP and Type III AFP-treated groups, respectively, P < 0.01). Intracellular ROS levels (mean ± SD) significantly decreased in the AFP-treated groups (17.0 ± 11.2, 8.4 ± 8.2, 10.3 ± 6.4 and 11.6 ± 12.3 in control, FfIBP, LeIBP and Type III AFP-treated groups, respectively, P < 0.01), and the FfIBP and LeIBP groups had significantly lower DNA DSBs, compared with controls (65.2, 30.8, 44.4 and 55.8% in control, FfIBP, LeIBP and Type III AFP-treated groups, respectively, P < 0.01). LIMITATIONS, REASONS FOR CAUTION The origins of FfIBP and LeIBP were bacteria and yeast, respectively. Therefore, treatment of human oocytes and embryos with these AFPs should be tested before clinical application. WIDER IMPLICATIONS OF THE FINDINGS After further research, AFPs can potentially be applied to human oocyte cryopreservation to improve the efficacy of vitrification. STUDY FUNDING/COMPETING INTERESTS This study was supported by a grant of the Korea Healthcare technology R&D Project, Ministry of Health & Welfare, Republic of Korea (HI12C0055). The authors have no conflict of interest to declare.
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Affiliation(s)
- Hyang Heun Lee
- Department of Obstetrics and Gynecology, Seoul National University Bundang Hospital, Seongnam 463-707, Korea
| | - Hee Jun Lee
- Department of Obstetrics and Gynecology, Seoul National University Bundang Hospital, Seongnam 463-707, Korea Department of Obstetrics and Gynecology, Seoul National University College of Medicine, Seoul 110-744, Korea Department of Obstetrics and Gynecology, Fertility Center of CHA Gangnam Medical Center, CHA University, Seoul 135-916, Korea
| | - Hak Jun Kim
- Department of Chemistry, Pukyong National University, Busan 608-737, Korea Division of Polar Life Sciences, Korea Polar Research Institute, Incheon 406-840, Korea
| | - Jun Hyuck Lee
- Division of Polar Life Sciences, Korea Polar Research Institute, Incheon 406-840, Korea
| | - Yong Ko
- Department of Biotechnology, Korea University, Seoul 136-713, Korea
| | - Sun Mie Kim
- Seoul National University Hospital Health Care System Gangnam Center, Seoul 135-984, Korea
| | - Jung Ryeol Lee
- Department of Obstetrics and Gynecology, Seoul National University Bundang Hospital, Seongnam 463-707, Korea Department of Obstetrics and Gynecology, Seoul National University College of Medicine, Seoul 110-744, Korea
| | - Chang Suk Suh
- Department of Obstetrics and Gynecology, Seoul National University Bundang Hospital, Seongnam 463-707, Korea Department of Obstetrics and Gynecology, Seoul National University College of Medicine, Seoul 110-744, Korea
| | - Seok Hyun Kim
- Department of Obstetrics and Gynecology, Seoul National University College of Medicine, Seoul 110-744, Korea
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Amin A, Gad A, Salilew-Wondim D, Prastowo S, Held E, Hoelker M, Rings F, Tholen E, Neuhoff C, Looft C, Schellander K, Tesfaye D. Bovine embryo survival under oxidative-stress conditions is associated with activity of the NRF2-mediated oxidative-stress-response pathway. Mol Reprod Dev 2015; 81:497-513. [PMID: 25057524 DOI: 10.1002/mrd.22316] [Citation(s) in RCA: 66] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
In present study, we sought to examine the ability of preimplantation bovine embryos to activate the NF-E2-related factor 2 (NRF2)-mediated oxidative-stress response under an oxidative stress environment. In vitro 2-, 4-, 8-, 16-cell-, and blastocyst-stage embryos were cultured under low (5%) or high (20%) oxygen levels. The expression of NRF2, KEAP1 (NRF2 inhibitor), antioxidants downstream of NRF2, and genes associated with embryo metabolism were analyzed between the embryo groups using real-time quantitative PCR. NRF2 and KEAP1 protein abundance, mitochondrial activity, and accumulation of reactive oxygen species (ROS) were also investigated in blastocysts of varying competence that were derived from high- or low-oxygen levels. The expression levels of NRF2 and its downstream antioxidant genes were higher in 8-cell, 16-cell, and blastocyst stages under high oxygen tension, whereas KEAP1 expression was down-regulated under the same conditions. Higher expression of NRF2 and lower ROS levels were detected in early (competent) blastocysts compared to their late (noncompetent) counterparts in both oxygen-tension groups. Similarly, higher levels of active nuclear NRF2 protein were detected in competent blastocysts compared to their noncompetent counterparts. Thus, the survival and developmental competence of embryos cultured under oxidative stress are associated with activity of the NRF2-mediated oxidative stress response pathway during bovine pre-implantation embryo development.
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Lee E, Min SH, Song BS, Yeon JY, Kim JW, Bae JH, Park SY, Lee YH, Kim SU, Lee DS, Chang KT, Koo DB. Exogenous γ-tocotrienol promotes preimplantation development and improves the quality of porcine embryos. Reprod Fertil Dev 2015; 27:481-90. [DOI: 10.1071/rd13167] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2013] [Accepted: 12/11/2013] [Indexed: 01/07/2023] Open
Abstract
γ-tocotrienol (GTT), an isomer of vitamin E, has been the subject of increasing interest due to its strong anti-oxidant effects. Therefore, in this study, the effects of GTT on blastocyst development, expression levels of reactive oxygen species (ROS) and apoptotic index were investigated in preimplantation porcine embryos. After in vitro maturation and fertilisation, porcine embryos were cultured for 6 days in porcine zygote medium 3 supplemented with or without GTT (200 μM) under oxidative stress conditions (200 μM hydrogen peroxide (H2O2)). Blastocyst development was significantly improved in the GTT-treated group when compared with the H2O2-treated group (P < 0.05). Subsequent evaluation of the intracellular levels of ROS and numbers of apoptotic nuclei in GTT-treated blastocysts revealed that ROS levels of GTT-treated porcine blastocysts were decreased (P < 0.05) and the numbers of apoptotic nuclei were reduced by GTT treatment in porcine embryos. Moreover, the total cell numbers of blastocysts were significantly increased in the GTT-treated group relative to the untreated group under H2O2-induced oxidative stress (P < 0.05). The expression levels of apoptosis-related genes (BCL-XL, BAX) in GTT-treated blastocysts were then investigated using real-time reverse transcription polymerase chain reaction. Expression of the anti-apoptotic BCL-XL gene was shown to be increased in the GTT-treated blastocyst group, whereas expression of the pro-apoptotic BAX gene was decreased. Taken together, these results suggest that GTT (200 μM) under H2O2-induced oxidative stress, thereby improving the developmental competence of porcine embryos via modulation of intracellular levels of ROS and the apoptotic index during the preimplantation stage.
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Yeon JY, Min SH, Park HJ, Kim JW, Lee YH, Park SY, Jeong PS, Park H, Lee DS, Kim SU, Chang KT, Koo DB. Mdivi-1, mitochondrial fission inhibitor, impairs developmental competence and mitochondrial function of embryos and cells in pigs. J Reprod Dev 2014; 61:81-9. [PMID: 25501014 PMCID: PMC4410306 DOI: 10.1262/jrd.2014-070] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
Abstract
Mitochondria are highly dynamic organelles that undergo constant fusion/fission as well as activities orchestrated by large dynamin-related GTPases. These dynamic mitochondrial processes influence mitochondrial morphology, size and function. Therefore, this study was conducted to evaluate the effects of mitochondrial fission inhibitor, mdivi-1, on developmental competence and mitochondrial function of porcine embryos and primary cells. Presumptive porcine embryos were cultured in PZM-3 medium supplemented with mdivi-1 (0, 10 and 50 μM) for 6 days. Porcine fibroblast cells were cultured in growth medium with mdivi-1 (0 and 50 μM) for 2 days. Our results showed that the rate of blastocyst production and cell growth in the mdivi-1 (50 μM) treated group was lower than that of the control group (P < 0.05). Moreover, loss of mitochondrial membrane potential in the mdivi-1 (50 μM) treated group was increased relative to the control group (P < 0.05). Subsequent evaluation
revealed that the intracellular levels of reactive oxygen species (ROS) and the apoptotic index were increased by mdivi-1 (50 μM) treatment (P < 0.05). Finally, the expression of mitochondrial fission-related protein (Drp 1) was lower in the embryos and cells in the mdivi-1-treated group than the control group. Taken together, these results indicate that mdivi-1 treatment may inhibit developmental competence and mitochondrial function in porcine embryos and primary cells.
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Affiliation(s)
- Ji-Yeong Yeon
- Department of Biotechnology, College of Engineering, Daegu University, Gyeongbuk 712-714, Republic of Korea
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50
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Meuter A, Rogmann LM, Winterhoff BJ, Tchkonia T, Kirkland JL, Morbeck DE. Markers of cellular senescence are elevated in murine blastocysts cultured in vitro: molecular consequences of culture in atmospheric oxygen. J Assist Reprod Genet 2014; 31:1259-67. [PMID: 25106938 DOI: 10.1007/s10815-014-0299-8] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2014] [Accepted: 07/14/2014] [Indexed: 12/19/2022] Open
Abstract
PURPOSE We aimed to determine whether embryo culture induces markers of cellular senescence and whether these effects were dependent on culture conditions. METHODS Murine blastocysts were derived in vitro and in vivo and assessed for 2 primary markers of senescence: senescence-associated β-galactosidase (SA-β-gal) and phosphorylated H2A.X (γ-H2A.X), the latter being a mark of DNA oxidative damage. Expression of senescence-associated genes p21, p16, and interleukin 6 (IL6) were also assessed. RESULTS Compared with in vivo-derived blastocysts, in vitro embryos had high levels of SA-β-gal, nuclear γ-H2A.X, and p21 mRNA expression, indicating that a senescence-like phenotype is induced by in vitro culture. To determine the role of culture conditions, we studied the effect of oxygen (5 % vs 20 %) and protein supplementation on senescence markers. Blastocysts in reduced oxygen (5 %) had low levels of both SA-β-gal and γ-H2A.X compared with blastocysts cultured in ambient oxygen. Senescence markers also were reduced in the presence of protein, suggesting that antioxidant properties of protein reduce oxidative DNA damage in vitro. CONCLUSION Elevated SA-β-gal, γ-H2A.X, and p21 suggest that in vitro stress can induce a senescence-like phenotype. Reduced oxygen during embryo culture minimizes these effects, providing further evidence for potential adverse effects of culturing embryos at ambient oxygen concentrations.
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Affiliation(s)
- Alexandra Meuter
- Division of Reproductive Endocrinology and Infertility, Mayo Clinic, 200St SW, Rochester, MN, 55905, USA
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