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Zhao YH, Wang JJ, Zhang PP, Hao HS, Pang YW, Wang HY, Du WH, Zhao SJ, Ruan WM, Zou HY, Hao T, Zhu HB, Zhao XM. Oocyte IVM or vitrification significantly impairs DNA methylation patterns in blastocysts as analysed by single-cell whole-genome methylation sequencing. Reprod Fertil Dev 2021; 32:676-689. [PMID: 32317092 DOI: 10.1071/rd19234] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2019] [Accepted: 11/14/2019] [Indexed: 12/12/2022] Open
Abstract
To explore the mechanisms leading to the poor quality of IVF blastocysts, the single-cell whole-genome methylation sequencing technique was used in this study to analyse the methylation patterns of bovine blastocysts derived from invivo, fresh (IVF) or vitrified (V_IVF) oocytes. Genome methylation levels of blastocysts in the IVF and V_IVF groups were significantly lower than those of the invivo group (P<0.05). In all, 1149 differentially methylated regions (DMRs) were identified between the IVF and invivo groups, 1578 DMRs were identified between the V_IVF and invivo groups and 151 DMRs were identified between the V_IVF and IVF groups. For imprinted genes, methylation levels of insulin-like growth factor 2 receptor (IGF2R) and protein phosphatase 1 regulatory subunit 9A (PPP1R9A) were lower in the IVF and V_IVF groups than in the invivo group, and the methylation level of paternally expressed 3 (PEG3) was lower in the V_IVF group than in the IVF and invivo groups. Genes with DMRs between the IVF and invivo and the V_IVF and IVF groups were primarily enriched in oocyte maturation pathways, whereas DMRs between the V_IVF and invivo groups were enriched in fertilisation and vitrification-vulnerable pathways. The results of this study indicate that differences in the methylation of critical DMRs may contribute to the differences in quality between invitro- and invivo-derived embryos.
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Affiliation(s)
- Ya-Han Zhao
- Embryo Biotechnology and Reproduction Laboratory and the Centre of Domestic Animal Reproduction and Breeding, Institute of Animal Sciences, Chinese Academy of Agricultural Sciences, No. 2 Yuanmingyuan Western Road, Haidian District, Beijing 100193, PR China
| | - Jing-Jing Wang
- Embryo Biotechnology and Reproduction Laboratory and the Centre of Domestic Animal Reproduction and Breeding, Institute of Animal Sciences, Chinese Academy of Agricultural Sciences, No. 2 Yuanmingyuan Western Road, Haidian District, Beijing 100193, PR China
| | - Pei-Pei Zhang
- Embryo Biotechnology and Reproduction Laboratory and the Centre of Domestic Animal Reproduction and Breeding, Institute of Animal Sciences, Chinese Academy of Agricultural Sciences, No. 2 Yuanmingyuan Western Road, Haidian District, Beijing 100193, PR China
| | - Hai-Sheng Hao
- Embryo Biotechnology and Reproduction Laboratory and the Centre of Domestic Animal Reproduction and Breeding, Institute of Animal Sciences, Chinese Academy of Agricultural Sciences, No. 2 Yuanmingyuan Western Road, Haidian District, Beijing 100193, PR China
| | - Yun-Wei Pang
- Embryo Biotechnology and Reproduction Laboratory and the Centre of Domestic Animal Reproduction and Breeding, Institute of Animal Sciences, Chinese Academy of Agricultural Sciences, No. 2 Yuanmingyuan Western Road, Haidian District, Beijing 100193, PR China
| | - Hao-Yu Wang
- Embryo Biotechnology and Reproduction Laboratory and the Centre of Domestic Animal Reproduction and Breeding, Institute of Animal Sciences, Chinese Academy of Agricultural Sciences, No. 2 Yuanmingyuan Western Road, Haidian District, Beijing 100193, PR China
| | - Wei-Hua Du
- Embryo Biotechnology and Reproduction Laboratory and the Centre of Domestic Animal Reproduction and Breeding, Institute of Animal Sciences, Chinese Academy of Agricultural Sciences, No. 2 Yuanmingyuan Western Road, Haidian District, Beijing 100193, PR China
| | - Shan-Jiang Zhao
- Embryo Biotechnology and Reproduction Laboratory and the Centre of Domestic Animal Reproduction and Breeding, Institute of Animal Sciences, Chinese Academy of Agricultural Sciences, No. 2 Yuanmingyuan Western Road, Haidian District, Beijing 100193, PR China
| | - Wei-Min Ruan
- International Joint Center for Biomedical Innovation, School of Life Sciences, Henan University, Ming Lun Street, Kaifeng, Henan, 475004, PR China
| | - Hui-Ying Zou
- Embryo Biotechnology and Reproduction Laboratory and the Centre of Domestic Animal Reproduction and Breeding, Institute of Animal Sciences, Chinese Academy of Agricultural Sciences, No. 2 Yuanmingyuan Western Road, Haidian District, Beijing 100193, PR China
| | - Tong Hao
- Embryo Biotechnology and Reproduction Laboratory and the Centre of Domestic Animal Reproduction and Breeding, Institute of Animal Sciences, Chinese Academy of Agricultural Sciences, No. 2 Yuanmingyuan Western Road, Haidian District, Beijing 100193, PR China
| | - Hua-Bin Zhu
- Embryo Biotechnology and Reproduction Laboratory and the Centre of Domestic Animal Reproduction and Breeding, Institute of Animal Sciences, Chinese Academy of Agricultural Sciences, No. 2 Yuanmingyuan Western Road, Haidian District, Beijing 100193, PR China
| | - Xue-Ming Zhao
- Embryo Biotechnology and Reproduction Laboratory and the Centre of Domestic Animal Reproduction and Breeding, Institute of Animal Sciences, Chinese Academy of Agricultural Sciences, No. 2 Yuanmingyuan Western Road, Haidian District, Beijing 100193, PR China; and Corresponding author.
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Liao Q, Feng X, Li X, Chen G, Chen J, Yang B, Li K, Ai J. Lapatinib‑induced inhibition of ovarian function is counteracted by the STAT3 pathway both in vivo and in vitro. Oncol Rep 2020; 44:1127-1135. [PMID: 32582968 PMCID: PMC7388577 DOI: 10.3892/or.2020.7660] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2019] [Accepted: 06/09/2020] [Indexed: 12/22/2022] Open
Abstract
The present study was designed to ascertain whether lapatinib, a tyrosine kinase inhibitor of epidermal growth factor receptor (EGFR), affects ovarian reserve and fertility potential in a mouse model. Female C57BL/6 mice were treated with either vehicle or lapatinib (100 or 200 mg/kg/day orally) for 4 weeks, after which body weight, vaginal smears, follicle numbers, serum anti‑Müllerian hormone (AMH) levels and mating outcomes were analyzed to assess the ovarian reserve and reproductive function. Slices from the ovaries of 4‑week‑old mice were cultured with lapatinib (0, 5 or 10 µM) for 24 and 48 h, and protein expression levels were assessed to validate the changes in signaling pathways. The results indicated that mice treated with 200 mg/kg lapatinib showed a slight decrease in body weight compared to those treated with vehicle or 100 mg/kg lapatinib. There was no statistical difference in estrous cyclicity among the three groups. No significant difference was observed in follicle numbers, AMH levels, histological morphologies of the ovaries or mating outcomes in the three groups of mice. Western blotting and immunohistochemical staining of the EGF receptor and its main downstream signaling pathways showed decreased phosphorylation of EGFR and mitogen‑activated protein kinase (MAPK)3/1 and increased phosphorylation of signal transducers and activators of transcription (STAT)3 in the lapatinib‑treated groups compared to the control group. Our study suggests that lapatinib has little effect on ovarian reserve and reproductive function in a mouse model. This lack of effect of lapatinib on ovarian function may be due to the activation of the STAT3 signaling pathway that counteracts the inhibitory effects of lapatinib on EGF receptors.
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Affiliation(s)
- Qiuyue Liao
- Department of Gynecology and Obstetrics, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei 430030, P.R. China
| | - Xue Feng
- Department of Gynecology and Obstetrics, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei 430030, P.R. China
| | - Xi Li
- Department of Gynecology and Obstetrics, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei 430030, P.R. China
| | - Ge Chen
- Department of Gynecology and Obstetrics, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei 430030, P.R. China
| | - Jing Chen
- Department of Gynecology and Obstetrics, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei 430030, P.R. China
| | - Bin Yang
- Department of Gynecology and Obstetrics, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei 430030, P.R. China
| | - Kezhen Li
- Department of Gynecology and Obstetrics, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei 430030, P.R. China
| | - Jihui Ai
- Department of Gynecology and Obstetrics, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei 430030, P.R. China
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Han Y, Wu J, Yang W, Wang D, Zhang T, Cheng M. New STAT3-FOXL2 pathway and its function in cancer cells. BMC Mol Cell Biol 2019; 20:17. [PMID: 31221094 PMCID: PMC6587274 DOI: 10.1186/s12860-019-0206-3] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2019] [Accepted: 06/17/2019] [Indexed: 12/25/2022] Open
Abstract
BACKGROUND The forkhead transcription factor (FOXL2) plays a crucial role in blepharophimosis-ptosis-epicanthus inversus syndrome (BPES), sex determination, ovary growth and development, and cell cycle regulation. Emerging investigations have focused on the downstream targets of FOXL2, while little is known about its upstream regulation. RESULTS In this study, we show that FOXL2 could be regulated by STAT3 in cancer cells and that STAT3 binds to FOXL2 at the 5'- GCCTGATGTTTGTCTTCCCAGTCTGTGGCAA-3' site using EMSA and ChIP. We further found that knockdown of STAT3 or FOXL2 could significantly induce cancer cell apoptosis, indicating the importance of these two genes in cancer cell growth and apoptosis. Our data also indicated that the increased apoptotic cell rate may be caused by changes in apoptosis-related genes, such as TNF, TRAIL and GnRHR. CONCLUSION This study presents a new upstream regulator of FOXL2 and demonstrats that this new STAT3-FOXL2 pathway has an important function in HeLaHeLa cell apoptosis, providing new insights regarding the targeting of FOXL2 for cancer prevention and treatment.
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Affiliation(s)
- Yangyang Han
- School of Bioscience and Technology, Weifang Medical University, Weifang, Shandong, 261053, People's Republic of China.
| | - Jun Wu
- Plastic Surgery Institute of Weifang Medical University, Weifang, Shandong, 261053, People's Republic of China
| | - Weiwei Yang
- School of Bioscience and Technology, Weifang Medical University, Weifang, Shandong, 261053, People's Republic of China
| | - Di Wang
- Plastic Surgery Institute of Weifang Medical University, Weifang, Shandong, 261053, People's Republic of China
| | - Tianliang Zhang
- Experimental Center for Medical Research, Weifang Medical University, Weifang, Shandong, 261053, People's Republic of China
| | - Min Cheng
- Department of Physiology, Weifang Medical University, Weifang, Shandong, 261053, People's Republic of China.
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Molecular Mechanisms of Prophase I Meiotic Arrest Maintenance and Meiotic Resumption in Mammalian Oocytes. Reprod Sci 2018; 26:1519-1537. [DOI: 10.1177/1933719118765974] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Mechanisms of meiotic prophase I arrest maintenance (germinal vesicle [GV] stage) and meiotic resumption (germinal vesicle breakdown [GVBD] stage) in mammalian oocytes seem to be very complicated. These processes are regulated via multiple molecular cascades at transcriptional, translational, and posttranslational levels, and many of them are interrelated. There are many molecular cascades of meiosis maintaining and meiotic resumption in oocyte which are orchestrated by multiple molecules produced by pituitary gland and follicular cells. Furthermore, many of these molecular cascades are duplicated, thus ensuring the stability of the entire system. Understanding mechanisms of oocyte maturation is essential to assess the oocyte status, develop effective protocols of oocyte in vitro maturation, and design novel contraceptive drugs. Mechanisms of meiotic arrest maintenance at prophase I and meiotic resumption in mammalian oocytes are covered in the present article.
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Wu L, Wu Y, Peng B, Hou Z, Dong Y, Chen K, Guo M, Li H, Chen X, Kou X, Zhao Y, Bi Y, Wang Y, Wang H, Le R, Kang L, Gao S. Oocyte-Specific Homeobox 1, Obox1, Facilitates Reprogramming by Promoting Mesenchymal-to-Epithelial Transition and Mitigating Cell Hyperproliferation. Stem Cell Reports 2017; 9:1692-1705. [PMID: 29033306 PMCID: PMC5853649 DOI: 10.1016/j.stemcr.2017.09.012] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2017] [Revised: 09/14/2017] [Accepted: 09/15/2017] [Indexed: 12/14/2022] Open
Abstract
Mammalian oocytes possess fascinating unknown factors, which can reprogram terminally differentiated germ cells or somatic cells into totipotent embryos. Here, we demonstrate that oocyte-specific homeobox 1 (Obox1), an oocyte-specific factor, can markedly enhance the generation of induced pluripotent stem cells (iPSCs) from mouse fibroblasts in a proliferation-independent manner and can replace Sox2 to achieve pluripotency. Overexpression of Obox1 can greatly promote mesenchymal-to-epithelial transition (MET) at early stage of OSKM-induced reprogramming, and meanwhile, the hyperproliferation of THY1-positive cells can be significantly mitigated. Subsequently, the proportion of THY1-negative cells and Oct4-GFP-positive cells increased dramatically. Further analysis of gene expression and targets of Obox1 during reprogramming indicates that the expression of Obox1 can promote epithelial gene expression and modulate cell-cycle-related gene expression. Taken together, we conclude that the oocyte-specific factor Obox1 serves as a strong activator for somatic cell reprogramming through promoting the MET and mitigating cell hyperproliferation.
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Affiliation(s)
- Li Wu
- Clinical and Translational Research Center of Shanghai First Maternity & Infant Hospital, School of Life Sciences and Technology, Tongji University, Shanghai 200092, China; Institute of Biophysics, Chinese Academy of Sciences, Beijing 100101, China; College of Life Sciences, University of Chinese Academy of Sciences, Beijing 100049, China
| | - You Wu
- Clinical and Translational Research Center of Shanghai First Maternity & Infant Hospital, School of Life Sciences and Technology, Tongji University, Shanghai 200092, China
| | - Bing Peng
- Clinical and Translational Research Center of Shanghai First Maternity & Infant Hospital, School of Life Sciences and Technology, Tongji University, Shanghai 200092, China
| | - Zhenzhen Hou
- Clinical and Translational Research Center of Shanghai First Maternity & Infant Hospital, School of Life Sciences and Technology, Tongji University, Shanghai 200092, China
| | - Yu Dong
- Clinical and Translational Research Center of Shanghai First Maternity & Infant Hospital, School of Life Sciences and Technology, Tongji University, Shanghai 200092, China
| | - Kang Chen
- Institute of Cancer Stem Cell, Dalian Medical University, Dalian 116044, China
| | - Mingyue Guo
- Clinical and Translational Research Center of Shanghai First Maternity & Infant Hospital, School of Life Sciences and Technology, Tongji University, Shanghai 200092, China
| | - Han Li
- Clinical and Translational Research Center of Shanghai First Maternity & Infant Hospital, School of Life Sciences and Technology, Tongji University, Shanghai 200092, China
| | - Xia Chen
- Clinical and Translational Research Center of Shanghai First Maternity & Infant Hospital, School of Life Sciences and Technology, Tongji University, Shanghai 200092, China
| | - Xiaochen Kou
- Clinical and Translational Research Center of Shanghai First Maternity & Infant Hospital, School of Life Sciences and Technology, Tongji University, Shanghai 200092, China
| | - Yanhong Zhao
- Clinical and Translational Research Center of Shanghai First Maternity & Infant Hospital, School of Life Sciences and Technology, Tongji University, Shanghai 200092, China
| | - Yan Bi
- Clinical and Translational Research Center of Shanghai First Maternity & Infant Hospital, School of Life Sciences and Technology, Tongji University, Shanghai 200092, China
| | - Yixuan Wang
- Clinical and Translational Research Center of Shanghai First Maternity & Infant Hospital, School of Life Sciences and Technology, Tongji University, Shanghai 200092, China
| | - Hong Wang
- Clinical and Translational Research Center of Shanghai First Maternity & Infant Hospital, School of Life Sciences and Technology, Tongji University, Shanghai 200092, China
| | - Rongrong Le
- Clinical and Translational Research Center of Shanghai First Maternity & Infant Hospital, School of Life Sciences and Technology, Tongji University, Shanghai 200092, China.
| | - Lan Kang
- Clinical and Translational Research Center of Shanghai First Maternity & Infant Hospital, School of Life Sciences and Technology, Tongji University, Shanghai 200092, China; Institute of Cancer Stem Cell, Dalian Medical University, Dalian 116044, China.
| | - Shaorong Gao
- Clinical and Translational Research Center of Shanghai First Maternity & Infant Hospital, School of Life Sciences and Technology, Tongji University, Shanghai 200092, China.
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Tiwari M, Gupta A, Sharma A, Prasad S, Pandey AN, Yadav PK, Pandey AK, Shrivastav TG, Chaube SK. Role of Mitogen Activated Protein Kinase and Maturation Promoting Factor During the Achievement of Meiotic Competency in Mammalian Oocytes. J Cell Biochem 2017; 119:123-129. [DOI: 10.1002/jcb.26184] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2017] [Accepted: 06/01/2017] [Indexed: 12/25/2022]
Affiliation(s)
- Meenakshi Tiwari
- Cell Physiology LaboratoryDepartment of ZoologyInstitute of ScienceBanaras Hindu UniversityVaranasiUttar Pradesh 221005India
| | - Anumegha Gupta
- Cell Physiology LaboratoryDepartment of ZoologyInstitute of ScienceBanaras Hindu UniversityVaranasiUttar Pradesh 221005India
| | - Alka Sharma
- Cell Physiology LaboratoryDepartment of ZoologyInstitute of ScienceBanaras Hindu UniversityVaranasiUttar Pradesh 221005India
| | - Shilpa Prasad
- Cell Physiology LaboratoryDepartment of ZoologyInstitute of ScienceBanaras Hindu UniversityVaranasiUttar Pradesh 221005India
| | - Ashutosh N. Pandey
- Cell Physiology LaboratoryDepartment of ZoologyInstitute of ScienceBanaras Hindu UniversityVaranasiUttar Pradesh 221005India
| | - Pramod K. Yadav
- Cell Physiology LaboratoryDepartment of ZoologyInstitute of ScienceBanaras Hindu UniversityVaranasiUttar Pradesh 221005India
| | - Ajai K. Pandey
- Faculty of AyurvedaDepartment of KayachikitsaBanaras Hindu UniversityVaranasiUttar Pradesh 221005India
| | - Tulsidas G. Shrivastav
- Department of Reproductive BiomedicineNational Institute of Health and Family WelfareBaba Gang Nath MargMunirkaNew Delhi 110067India
| | - Shail K. Chaube
- Cell Physiology LaboratoryDepartment of ZoologyInstitute of ScienceBanaras Hindu UniversityVaranasiUttar Pradesh 221005India
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Parthenogenetic activation and somatic cell nuclear transfer of porcine oocytes activated by an electric pulse and AZD5438 treatment. ZYGOTE 2017; 25:453-461. [PMID: 28712374 DOI: 10.1017/s0967199417000272] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
We examined the in vitro developmental competence of parthenogenetic activation (PA) oocytes activated by an electric pulse (EP) and treated with various concentrations of AZD5438 for 4 h. Treatment with 10 µM AZD5438 for 4 h significantly improved the blastocyst formation rate of PA oocytes in comparison with 0, 20, or 50 µM AZD5438 treatment (46.4% vs. 34.5%, 32.3%, and 24.0%, respectively; P 0.05). Furthermore, 66.67% of blastocysts derived from these AZD5438-treated PA oocytes had a diploid karyotype. The blastocyst formation rate of PA and somatic cell nuclear transfer (SCNT) embryos was similar between oocytes activated by an EP and treated with 2 mM 6-dimethylaminopurine for 4 h and those activated by an EP and treated with 10 µM AZD5438 for 4 h (11.11% vs. 13.40%, P > 0.05). In addition, the level of maturation-promoting factor (MPF) was significantly decreased in oocytes activated by an EP and treated with 10 µM AZD5438 for 4 h. Finally, the mRNA expression levels of apoptosis-related genes (Bax and Bcl-2) and pluripotency-related genes (Oct4, Nanog, and Sox2) were checked by RT-PCR; however, there were no differences between the AZD5438-treated and non-treated control groups. Our results demonstrate that porcine oocyte activation via an EP in combination with AZD5438 treatment can lead to a high blastocyst formation rate in PA and SCNT experiments.
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The developmental competence of oocytes parthenogenetically activated by an electric pulse and anisomycin treatment. Biotechnol Lett 2016; 39:189-196. [PMID: 27864653 DOI: 10.1007/s10529-016-2249-2] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2016] [Accepted: 11/01/2016] [Indexed: 10/20/2022]
Abstract
OBJECTIVE The aim of this study was to investigate the developmental competence of oocytes parthenogenetically activated by an electric pulse (EP) and treated with anisomycin and to determine whether this method is applicable to somatic cell nuclear transfer (SCNT). RESULTS Embryos derived from porcine oocytes parthenogenetically activated by an EP and treatment with 0.01 µg/mL anisomycin had a significantly improved in vitro developmental capacity. Furthermore, 66.6% of blastocysts derived from these embryos had a diploid karyotype. The blastocyst formation rate of cloned embryos was similar between oocytes activated by an EP and treated with 2 mM 6-dimethylaminopurine for 4 h and those activated by an EP and treated with 0.01 µg/mL anisomycin for 4 h. The level of maturation-promoting factor was significantly decreased in oocytes activated by an EP and treated with anisomycin. Finally, the mRNA expression levels of apoptosis-related genes (Bax and Bcl-2) and pluripotency-related genes (Oct4, Nanog, and Sox2) were checked by RT-PCR. CONCLUSION Our results demonstrate that porcine oocyte activation via an EP in combination with anisomycin treatment can lead to a high blastocyst formation rate in parthenogenetic activation and SCNT experiments.
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