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Yahaya TO, Bashar DM, Oladele EO, Umar J, Anyebe D, Izuafa A. Epigenetics in the etiology and management of infertility. World J Med Genet 2022; 10:7-21. [DOI: 10.5496/wjmg.v10.i2.7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/05/2022] [Revised: 06/28/2022] [Accepted: 10/12/2022] [Indexed: 02/05/2023] Open
Abstract
BACKGROUND Epigenetic disruptions have been implicated in some cases of infertility and can serve as therapeutic targets. However, the involvement of epigenetics in infertility has not received adequate attention.
AIM This study aimed to determine the epigenetic basis of infertility in order to enhance public knowledge.
METHODS Relevant articles on the subject were collected from PubMed, RCA, Google Scholar, SpringerLink, and Scopus. The articles were pooled together and duplicates were removed using Endnote software.
RESULTS Available information shows that epigenetic mechanisms, mainly DNA methylation, histone modification, and microRNA interference are necessary for normal gametogenesis and embryogenesis. As a result, epigenetic disruptions in genes that control gametogenesis and embryogenesis, such as DDX3X, ADH4, AZF, PLAG1, D1RAS3, CYGB, MEST, JMJD1A, KCNQ1, IGF2, H19, and MTHFR may result in infertility. Aberrant DNA methylation during genomic imprinting and parental epigenetic mark erasures, in particular, may affect the DNA epigenomes of sperm and oocytes, resulting in reproductive abnormalities. Histone epigenetic dysregulation during oocyte development and histone-protamine replacement in the sperm may also cause reproductive abnormalities. Furthermore, overexpression or repression of certain microRNAs embedded in the ovary, testis, embryo, as well as granulosa cells and oocytes may impair reproduction. Male infertility is characterized by spermatogenesis failure, which includes oligozoospermia, asthenozoospermia, and teratozoospermia, while female infertility is characterized by polycystic ovary syndrome. Some epigenetic modifications can be reversed by deactivating the regulatory enzymes, implying that epigenetic reprogramming could help treat infertility in some cases. For some disorders, epigenetic drugs are available, but none have been formulated for infertility.
CONCLUSION Some cases of infertility have an epigenetic etiology and can be treated by reversing the same epigenetic mechanism that caused it. As a result, medical practitioners are urged to come up with epigenetic treatments for infertility that have an epigenetic cause.
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Affiliation(s)
| | - Danlami M Bashar
- Department of Microbiology, Federal University Birnin Kebbi, Kebbi State 23401, Nigeria
| | - Esther O Oladele
- Biology Unit, Distance Learning Institute, University of Lagos, Lagos State 23401, Nigeria
| | - Ja'afar Umar
- Department of Biological Sciences, Federal University Birnin Kebbi, Kebbi State 23401, Nigeria
| | - Daniel Anyebe
- Department of Biochemistry and Molecular Biology, Federal University Birnin Kebbi, Kebbi State 23401, Nigeria
| | - Abdulrazaq Izuafa
- Department of Biological Sciences, Federal University Birnin Kebbi, Kebbi State 23401, Nigeria
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Niu J, Wang X, Liu P, Liu H, Li R, Li Z, He Y, Qi J. Effects of Cryopreservation on Sperm with Cryodiluent in Viviparous Black Rockfish ( Sebastes schlegelii). Int J Mol Sci 2022; 23:ijms23063392. [PMID: 35328812 PMCID: PMC8955014 DOI: 10.3390/ijms23063392] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2022] [Revised: 03/18/2022] [Accepted: 03/19/2022] [Indexed: 02/07/2023] Open
Abstract
Black rockfish is an economically important fish in East Asia. Little mention has been paid to the sperm cryopreservation in black rockfish. In this study, the optimal cryodiluent was selected from 48 combinations by detecting various sperm parameters. Transcriptome and methylome analysis were further performed to explore the molecular mechanism of inevitable cryoinjuries. The results showed that cryopreservation had negative effects on the viability, DNA integrity, mitochondrial activity, total ATPase and LDH of sperm even with optimal cryodiluent (FBS + 15% Gly). Transcriptome and methylome analysis revealed that the expression of 179 genes and methylation of 1266 genes were affected by cryopreservation. These genes were enriched in GO terms of death, G-protein coupled receptor signaling pathway, response to external stimulus and KEGG pathways of phospholipase D signaling pathway and xenobiotic and carbohydrate metabolism pathways. The role of PIK3CA and CCNA2 were highlighted in the protein-protein interaction network, and the sperm quality-related imprinted gene mest was identified among the 7 overlapping genes between transcriptome and methylome. Overall, the cryodiluent for black rockfish sperm was optimized, providing a feasible method for cryopreservation. The transcriptome and methylome data further demonstrated the underlying molecular mechanisms of cryoinjuries, proving clues for improvement of cryopreservation method of black rockfish.
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Affiliation(s)
- Jingjing Niu
- MOE Key Laboratory of Marine Genetics and Breeding, College of Marine Life Sciences, Ocean University of China, 5 Yushan Road, Qingdao 266003, China; (J.N.); (X.W.); (P.L.); (H.L.); (R.L.); (Z.L.); (Y.H.)
| | - Xuliang Wang
- MOE Key Laboratory of Marine Genetics and Breeding, College of Marine Life Sciences, Ocean University of China, 5 Yushan Road, Qingdao 266003, China; (J.N.); (X.W.); (P.L.); (H.L.); (R.L.); (Z.L.); (Y.H.)
| | - Pingping Liu
- MOE Key Laboratory of Marine Genetics and Breeding, College of Marine Life Sciences, Ocean University of China, 5 Yushan Road, Qingdao 266003, China; (J.N.); (X.W.); (P.L.); (H.L.); (R.L.); (Z.L.); (Y.H.)
- Key Laboratory of Tropical Aquatic Germplasm of Hainan Province, Sanya Oceanog Institute, Ocean University of China, Sanya 572000, China
| | - Huaxiang Liu
- MOE Key Laboratory of Marine Genetics and Breeding, College of Marine Life Sciences, Ocean University of China, 5 Yushan Road, Qingdao 266003, China; (J.N.); (X.W.); (P.L.); (H.L.); (R.L.); (Z.L.); (Y.H.)
| | - Rui Li
- MOE Key Laboratory of Marine Genetics and Breeding, College of Marine Life Sciences, Ocean University of China, 5 Yushan Road, Qingdao 266003, China; (J.N.); (X.W.); (P.L.); (H.L.); (R.L.); (Z.L.); (Y.H.)
| | - Ziyi Li
- MOE Key Laboratory of Marine Genetics and Breeding, College of Marine Life Sciences, Ocean University of China, 5 Yushan Road, Qingdao 266003, China; (J.N.); (X.W.); (P.L.); (H.L.); (R.L.); (Z.L.); (Y.H.)
| | - Yan He
- MOE Key Laboratory of Marine Genetics and Breeding, College of Marine Life Sciences, Ocean University of China, 5 Yushan Road, Qingdao 266003, China; (J.N.); (X.W.); (P.L.); (H.L.); (R.L.); (Z.L.); (Y.H.)
- Key Laboratory of Tropical Aquatic Germplasm of Hainan Province, Sanya Oceanog Institute, Ocean University of China, Sanya 572000, China
| | - Jie Qi
- MOE Key Laboratory of Marine Genetics and Breeding, College of Marine Life Sciences, Ocean University of China, 5 Yushan Road, Qingdao 266003, China; (J.N.); (X.W.); (P.L.); (H.L.); (R.L.); (Z.L.); (Y.H.)
- Key Laboratory of Tropical Aquatic Germplasm of Hainan Province, Sanya Oceanog Institute, Ocean University of China, Sanya 572000, China
- Correspondence: ; Tel.: +86-532-8203-1832
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Zhu J, Huang Z, Yang F, Zhu M, Cao J, Chen J, Lin Y, Guo S, Li J, Liu Z. Cadmium disturbs epigenetic modification and induces DNA damage in mouse preimplantation embryos. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2021; 219:112306. [PMID: 33984557 DOI: 10.1016/j.ecoenv.2021.112306] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/08/2021] [Revised: 04/27/2021] [Accepted: 05/02/2021] [Indexed: 06/12/2023]
Abstract
Cadmium is an environmental pollutant that has extensive deleterious effects on the reproductive system. However, the mechanisms underlying the effects of cadmium on preimplantation embryos are unclear. Here, we used a mouse model to investigate the effects of maternal cadmium (32 mg/l) exposure in drinking water for 2 days on early embryonic development, and studied the mechanisms associated with epigenetic modifications and DNA damage induced by oxidative stress. We observed that maternal cadmium exposure impaired preimplantation embryo development by inducing embryo death, fragmentation, or developmental blockade. After cadmium exposure, the most survived embryos were at the 8-cell stage, which were used for all measurements. Histone acetylation, not methylation, was disturbed by increasing histone deacetylase 1 (HDAC1) levels after cadmium exposure. Cadmium also disrupted DNA methylation of H19; however genomic DNA methylation can be normally reprogrammed in embryos. Furthermore, cadmium increased reactive oxygen species (ROS) levels and DNA damage, and partly inhibited gene expression related to DNA repair. The distribution and activity of mitochondria was increased; therefore, embryos maintain intracellular homeostasis for survival. Collectively, our findings revealed that maternal cadmium exposure impairs preimplantation embryo development by disturbing the epigenetic modification and inducing DNA damage.
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Affiliation(s)
- Jiaqiao Zhu
- College of Veterinary Medicine, Yangzhou University, Yangzhou, Jiangsu, PR China; Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou, Jiangsu, PR China; Joint International Research Laboratory of Agriculture and Agri-Product Safety, the Ministry of Education of China, Yangzhou University, Yangzhou, Jiangsu, PR China.
| | - Zhutao Huang
- College of Veterinary Medicine, Yangzhou University, Yangzhou, Jiangsu, PR China; Laboratory Animal Center, Xuzhou Medical University, Xuzhou, Jiangsu, PR China
| | - Fan Yang
- College of Veterinary Medicine, Yangzhou University, Yangzhou, Jiangsu, PR China; Shen Zhen Heng Sheng Hospital, Southern Medical University, Shen Zhen, Guangdong, PR China
| | - Min Zhu
- College of Veterinary Medicine, Yangzhou University, Yangzhou, Jiangsu, PR China
| | - Jiangqin Cao
- College of Veterinary Medicine, Yangzhou University, Yangzhou, Jiangsu, PR China
| | - Jiali Chen
- College of Veterinary Medicine, Yangzhou University, Yangzhou, Jiangsu, PR China
| | - Yan Lin
- College of Veterinary Medicine, Yangzhou University, Yangzhou, Jiangsu, PR China
| | - Shuai Guo
- College of Veterinary Medicine, Yangzhou University, Yangzhou, Jiangsu, PR China
| | - Junwei Li
- College of Veterinary Medicine, Yangzhou University, Yangzhou, Jiangsu, PR China
| | - Zongping Liu
- College of Veterinary Medicine, Yangzhou University, Yangzhou, Jiangsu, PR China; Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou, Jiangsu, PR China; Joint International Research Laboratory of Agriculture and Agri-Product Safety, the Ministry of Education of China, Yangzhou University, Yangzhou, Jiangsu, PR China.
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Yin SY, Chen L, Wu DY, Wang T, Huo LJ, Zhao S, Zhou J, Zhang X, Miao YL. Tris(1,3-dichloro-2-propyl) phosphate disturbs mouse embryonic development by inducing apoptosis and abnormal DNA methylation. ENVIRONMENTAL AND MOLECULAR MUTAGENESIS 2019; 60:807-815. [PMID: 31411769 DOI: 10.1002/em.22322] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/05/2019] [Revised: 06/15/2019] [Accepted: 08/11/2019] [Indexed: 05/21/2023]
Abstract
Tris(1,3-dichloro-2-propyl) phosphate (TDCPP) is a kind of additive flame retardants (FRs) and was found to affect early embryonic development in zebrafish; however, there are few studies to investigate whether TDCPP will disturb the development of early mouse embryos. In our studies, we used mouse embryos as models to study the toxicology of TDCPP on the early embryos. The results showed that TDCPP disturbed the development of early mouse embryos in a dose-dependent manner. 10 μM TDCPP decreased the blastocyst formation and 100 μM TDCPP was a lethal concentration for the mouse embryos. We proved that TDCPP was detrimental to embryonic development potential by increasing the reactive oxygen species level and inducing early apoptosis. Furthermore, TDCPP changed the DNA methylation patterns of imprinted genes in treated blastocysts. The methylation of H19 and Snrpn promoter regions was increased from 37.67% to 46.00% and 31.56% to 44.38% in treated groups, respectively. In contrast, Peg3 promoter region methylation was declined from 86.55% to 73.27% in treated embryos. Taken together, our results demonstrated that TDCPP could adversely impair the early embryonic development in mouse. Environ. Mol. Mutagen. 2019. © 2019 Wiley Periodicals, Inc.
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Affiliation(s)
- Shu-Yuan Yin
- Institute of Stem Cell and Regenerative Biology, College of Animal Science and Veterinary Medicine, Huazhong Agricultural University, Wuhan, China
- Key Laboratory of Agricultural Animal Genetics, Breeding and Reproduction, Ministry of Education, Huazhong Agricultural University, Wuhan, China
| | - Li Chen
- Institute of Stem Cell and Regenerative Biology, College of Animal Science and Veterinary Medicine, Huazhong Agricultural University, Wuhan, China
- Key Laboratory of Agricultural Animal Genetics, Breeding and Reproduction, Ministry of Education, Huazhong Agricultural University, Wuhan, China
| | - Dan-Ya Wu
- Institute of Stem Cell and Regenerative Biology, College of Animal Science and Veterinary Medicine, Huazhong Agricultural University, Wuhan, China
- Key Laboratory of Agricultural Animal Genetics, Breeding and Reproduction, Ministry of Education, Huazhong Agricultural University, Wuhan, China
| | - Tao Wang
- Institute of Stem Cell and Regenerative Biology, College of Animal Science and Veterinary Medicine, Huazhong Agricultural University, Wuhan, China
- Key Laboratory of Agricultural Animal Genetics, Breeding and Reproduction, Ministry of Education, Huazhong Agricultural University, Wuhan, China
| | - Li-Jun Huo
- Key Laboratory of Agricultural Animal Genetics, Breeding and Reproduction, Ministry of Education, Huazhong Agricultural University, Wuhan, China
| | - Shuhong Zhao
- Key Laboratory of Agricultural Animal Genetics, Breeding and Reproduction, Ministry of Education, Huazhong Agricultural University, Wuhan, China
| | - Jilong Zhou
- Institute of Stem Cell and Regenerative Biology, College of Animal Science and Veterinary Medicine, Huazhong Agricultural University, Wuhan, China
- Key Laboratory of Agricultural Animal Genetics, Breeding and Reproduction, Ministry of Education, Huazhong Agricultural University, Wuhan, China
| | - Xia Zhang
- Institute of Stem Cell and Regenerative Biology, College of Animal Science and Veterinary Medicine, Huazhong Agricultural University, Wuhan, China
- National Demonstration Center for Experimental Veterinary Medicine Education, Huazhong Agricultural University, Wuhan, China
| | - Yi-Liang Miao
- Institute of Stem Cell and Regenerative Biology, College of Animal Science and Veterinary Medicine, Huazhong Agricultural University, Wuhan, China
- Key Laboratory of Agricultural Animal Genetics, Breeding and Reproduction, Ministry of Education, Huazhong Agricultural University, Wuhan, China
- Department of Reproductive Medical Center, Huangshi Central Hospital, Huangshi, Hubei, China
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Zhou CJ, Wang XY, Han Z, Wang DH, Ma YZ, Liang CG. Loss of CENPF leads to developmental failure in mouse embryos. Cell Cycle 2019; 18:2784-2799. [PMID: 31478449 DOI: 10.1080/15384101.2019.1661173] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023] Open
Abstract
Aneuploidy caused by abnormal chromosome segregation during early embryo development leads to embryonic death or congenital malformation. Centromere protein F (CENPF) is a member of centromere protein family that regulates chromosome segregation during mitosis. However, its necessity in early embryo development has not been fully investigated. In this study, expression and function of CENPF was investigated in mouse early embryogenesis. Detection of CENPF expression and localization revealed a cytoplasm, spindle and nuclear membrane related dynamic pattern throughout mitotic progression. Farnesyltransferase inhibitor (FTI) was employed to inhibit CENPF farnesylation in zygotes. The results showed that CENPF degradation was inhibited and its specific localization on nuclear membranes in morula and blastocyst vanished after FTI treatment. Also, CAAX motif mutation leads to failure of CENPF-C630 localization in morula and blastocyst. These results indicate that farnesylation plays a key role during CENPF degradation and localization in early embryos. To further assess CENPF function in parthenogenetic or fertilized embryos development, morpholino (MO) and Trim-Away were used to disturb CENPF function. CENPF knockdown in Metaphase II (MII) oocytes, zygotes or embryos with MO approach resulted in failure to develop into morulae and blastocysts, revealing its indispensable role in both parthenogenetic and fertilized embryos. Disturbing of CENPF with Trim-Away approach in zygotes resulted in impaired development of 2-cell and 4-cell, but did not affect the morula and blastocyst formation because of the recovered expression of CENPF. Taken together, our data suggest CENPF plays an important role during early embryonic development in mice. Abbreviation: CENPF: centromere protein F; MO: morpholino; FTI: Farnesyltransferase inhibitor; CENPE: centromere protein E; IVF: in vitro fertilization; MII: metaphase II; SAC: spindle assembly checkpoint; Mad1: mitotic arrest deficient 1; BUB1: budding uninhibited by benzimidazole 1; BUBR1: BUB1 mitotic checkpoint serine/threonine kinase B; Cdc20: cell division cycle 20.
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Affiliation(s)
- Cheng-Jie Zhou
- The Research Centre for Laboratory Animal Science, State Key Laboratory of Reproductive Regulation & Breeding of Grassland Livestock, School of Life Science, Inner Mongolia University , Hohhot , People's Republic of China
| | - Xing-Yue Wang
- The Research Centre for Laboratory Animal Science, State Key Laboratory of Reproductive Regulation & Breeding of Grassland Livestock, School of Life Science, Inner Mongolia University , Hohhot , People's Republic of China
| | - Zhe Han
- The Research Centre for Laboratory Animal Science, State Key Laboratory of Reproductive Regulation & Breeding of Grassland Livestock, School of Life Science, Inner Mongolia University , Hohhot , People's Republic of China
| | - Dong-Hui Wang
- The Research Centre for Laboratory Animal Science, State Key Laboratory of Reproductive Regulation & Breeding of Grassland Livestock, School of Life Science, Inner Mongolia University , Hohhot , People's Republic of China
| | - Yu-Zhen Ma
- Department of Obstetrics and Gynecology, Inner Mongolia People's Hospital , Hohhot , People's Republic of China
| | - Cheng-Guang Liang
- The Research Centre for Laboratory Animal Science, State Key Laboratory of Reproductive Regulation & Breeding of Grassland Livestock, School of Life Science, Inner Mongolia University , Hohhot , People's Republic of China
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Ascorbic acid improves parthenogenetic embryo development through TET proteins in mice. Biosci Rep 2019; 39:BSR20181730. [PMID: 30567727 PMCID: PMC6328890 DOI: 10.1042/bsr20181730] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2018] [Revised: 12/13/2018] [Accepted: 12/18/2018] [Indexed: 12/15/2022] Open
Abstract
The TET (Ten-Eleven Translocation) proteins catalyze the oxidation of 5mC (5-methylcytosine) to 5hmC (5-hydroxymethylcytosine) and play crucial roles in embryonic development. Ascorbic acid (Vc, Vitamin C) stimulates the expression of TET proteins, whereas DMOG (dimethyloxallyl glycine) inhibits TET expression. To investigate the role of TET1, TET2, and TET3 in PA (parthenogenetic) embryonic development, Vc and DMOG treatments were administered during early embryonic development. The results showed that Vc treatment increased the blastocyst rate (20.73 ± 0.46 compared with 26.57 ± 0.53%). By contrast, DMOG reduced the blastocyst rate (20.73 ± 0.46 compared with 11.18 ± 0.13%) in PA embryos. qRT-PCR (quantitative real-time PCR) and IF (immunofluorescence) staining results revealed that TET1, TET2, and TET3 expressions were significantly lower in PA embryos compared with normal fertilized (Con) embryos. Our results revealed that Vc stimulated the expression of TET proteins in PA embryos. However, treatment with DMOG significantly inhibited the expression of TET proteins. In addition, 5hmC was increased following treatment with Vc and suppressed by DMOG in PA embryos. Taken together, these results indicate that the expression of TET proteins plays crucial roles mediated by 5hmC in PA embryonic development.
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Liu X, Nie ZW, Gao YY, Chen L, Yin SY, Zhang X, Hao C, Miao YL. Sodium fluoride disturbs DNA methylation of NNAT and declines oocyte quality by impairing glucose transport in porcine oocytes. ENVIRONMENTAL AND MOLECULAR MUTAGENESIS 2018; 59:223-233. [PMID: 29285797 DOI: 10.1002/em.22165] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/19/2017] [Revised: 11/06/2017] [Accepted: 12/05/2017] [Indexed: 06/07/2023]
Abstract
Sodium fluoride (NaF) is used as a medicine to prevent tooth decay; however, excessive NaF could cause a pathological damage to the health. Recent studies showed that NaF impaired mouse oocyte maturation, included of abnormal spindle configuration, actin cap formation, cortical granule-free domain formation, and the following development after fertilization. However, few studies used large animals as models to study the toxicology of NaF on oocytes maturation. We proposed a hypothesis that NaF would affect the nuclear and cytoplasmic maturation of porcine oocytes and DNA methylation pattern of imprinted genes in oocytes. Our results showed that NaF affected cumulus expansion, polar body emission, spindle morphology, cortical granule distribution, early apoptosis, and the following development after parthenogenetic activation during porcine oocyte maturation. Moreover, NaF increased the DNA methylation of NNAT and decreased its expression, which disturbed the glucose transport in oocytes. These results suggest that NaF impairs the porcine oocytes maturation epigenetically, which provides a new toxicological mechanism of NaF on the oocyte maturation. Environ. Mol. Mutagen. 59:223-233, 2018. © 2017 Wiley Periodicals, Inc.
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Affiliation(s)
- Xiaoyan Liu
- Institute of Stem Cell and Regenerative Biology, College of Animal Science and Technology & College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, Hubei 430070, China
- Reproductive Medicine Centre, Affiliated Hospital of Qingdao Medical University, Yuhuangding Hospital of Yantai, Yantai, Shandong, China
| | - Zheng-Wen Nie
- Institute of Stem Cell and Regenerative Biology, College of Animal Science and Technology & College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, Hubei 430070, China
- Key Laboratory of Agricultural Animal Genetics, Breeding and Reproduction (Huazhong Agricultural University), Ministry of Education, Wuhan, Hubei 430070, China
| | - Ying-Ying Gao
- Institute of Stem Cell and Regenerative Biology, College of Animal Science and Technology & College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, Hubei 430070, China
- Key Laboratory of Agricultural Animal Genetics, Breeding and Reproduction (Huazhong Agricultural University), Ministry of Education, Wuhan, Hubei 430070, China
| | - Li Chen
- Institute of Stem Cell and Regenerative Biology, College of Animal Science and Technology & College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, Hubei 430070, China
- Key Laboratory of Agricultural Animal Genetics, Breeding and Reproduction (Huazhong Agricultural University), Ministry of Education, Wuhan, Hubei 430070, China
| | - Shu-Yuan Yin
- Institute of Stem Cell and Regenerative Biology, College of Animal Science and Technology & College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, Hubei 430070, China
- Key Laboratory of Agricultural Animal Genetics, Breeding and Reproduction (Huazhong Agricultural University), Ministry of Education, Wuhan, Hubei 430070, China
| | - Xia Zhang
- Institute of Stem Cell and Regenerative Biology, College of Animal Science and Technology & College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, Hubei 430070, China
- The Cooperative Innovation Center for Sustainable Pig Production, Wuhan, Hubei 430070, China
| | - Cuifang Hao
- Reproductive Medicine Centre, Affiliated Hospital of Qingdao Medical University, Yuhuangding Hospital of Yantai, Yantai, Shandong, China
| | - Yi-Liang Miao
- Institute of Stem Cell and Regenerative Biology, College of Animal Science and Technology & College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, Hubei 430070, China
- Key Laboratory of Agricultural Animal Genetics, Breeding and Reproduction (Huazhong Agricultural University), Ministry of Education, Wuhan, Hubei 430070, China
- The Cooperative Innovation Center for Sustainable Pig Production, Wuhan, Hubei 430070, China
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Wang D, Liu Z, Yao H, Hao Y, Zhou L, Du J, Zhu Y, Xu Y, Wang G, Song Y, Li Z. Disruption of NNAT, NAP1L5 and MKRN3 DNA methylation and transcription in rabbit parthenogenetic fetuses. Gene 2017; 626:158-162. [PMID: 28526651 DOI: 10.1016/j.gene.2017.05.035] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2017] [Revised: 05/06/2017] [Accepted: 05/15/2017] [Indexed: 10/19/2022]
Abstract
Parthenogenetically activated oocytes cannot develop to term in mammals due to lack of paternal gene expression. Disruption of imprinted gene expression and DNA methylation status in parthenogenetic fetuses has been reported in mice and pigs, but not in rabbits. In this study, the genomic imprinting status of the paternally expressed genes Neuronatin (NNAT), Nucleosome assembly protein 1-like 5 (NAP1L5), and Makorin ring finger protein 3 (MKRN3) was compared between rabbit parthenogenetic (PA) and normally fertilized fetuses (Con) using quantitative real-time PCR (qRT-PCR) and bisulfite sequencing PCR (BSP). The results revealed a significantly reduced expression of NNAT, NAP1L5, and MKRN3 in rabbit PA fetuses compared with Con fetuses (p<0.05). In addition, the BSP results demonstrated hypermethylation in the differentially methylated regions (DMRs) of NNAT, NAP1L5, and MKRN3 in rabbit PA fetuses. Taken together, these results suggest that hypermethylation of DMRs is associated with decreased NNAT, NAP1L5, and MKRN3 expression, which may be responsible for developmental failure of rabbit PA fetuses.
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Affiliation(s)
- Dongxu Wang
- College of Animal Science, Jilin University, Changchun 130062, China
| | - Zhiquan Liu
- College of Animal Science, Jilin University, Changchun 130062, China
| | - Haobin Yao
- College of Animal Science, Jilin University, Changchun 130062, China
| | - Yang Hao
- College of Animal Science, Jilin University, Changchun 130062, China
| | - Lina Zhou
- College of Animal Science, Jilin University, Changchun 130062, China
| | - Jian Du
- College of Animal Science, Jilin University, Changchun 130062, China
| | - Yixin Zhu
- College of Animal Science, Jilin University, Changchun 130062, China
| | - Yuxin Xu
- College of Animal Science, Jilin University, Changchun 130062, China
| | - Guodong Wang
- College of Animal Science, Jilin University, Changchun 130062, China
| | - Yuning Song
- College of Animal Science, Jilin University, Changchun 130062, China
| | - Zhanjun Li
- College of Animal Science, Jilin University, Changchun 130062, China.
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Kong P, Yin M, Chen D, Li S, Li Y, Xing F, Jiang M, Fang Z, Lyu Q, Chen X. Effects of the histone deacetylase inhibitor 'Scriptaid' on the developmental competence of mouse embryos generated through round spermatid injection. Hum Reprod 2016; 32:76-87. [PMID: 27864358 DOI: 10.1093/humrep/dew290] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2016] [Revised: 10/18/2016] [Accepted: 11/06/2016] [Indexed: 12/20/2022] Open
Abstract
STUDY QUESTION Can the histone deacetylase inhibitor Scriptaid improve the efficiency of the development of round spermatid injection (ROSI)-fertilized embryos in a mouse model? SUMMARY ANSWER Treatment of ROSI mouse zygotes with Scriptaid increased the expression levels of several development-related genes at the blastocyst stage, resulting in more efficient in vitro development of the blastocyst and an increased birth rate of ROSI-derived embryos. WHAT IS KNOWN ALREADY The full-term development of embryos derived through ROSI is significantly lower than that following ICSI in humans and other species. STUDY DESIGN, SIZE, DURATION Oocytes, spermatozoa and round spermatids were collected from BDF1 (C57BL/6 × DBA/2) mice. For in vitro development experiments, mouse ROSI-derived zygotes were treated with Scriptaid at different concentrations (0, 125, 250, 500 and 1000 nM) and for different exposure times (0, 6, 10, 16 or 24 h). Next, blastocysts of the optimal Scriptaid-treated group and the non-treated ROSI group were separately transferred into surrogate ICR mice to compare in vivo development with the ICSI group (control). Each experiment was repeated at least three times. PARTICIPANTS/MATERIALS, SETTING, METHODS Metaphase II (MII) oocytes, spermatozoa and round spermatids were obtained from sexually mature BDF1 female or male mice. The developmental potential of embryos among the three groups (the ICSI, ROSI and optimal Scriptaid-treated ROSI groups) was assessed based on the rates of obtaining zygotes, two-cell stage embryos, four-cell stage embryos, blastocysts and full-term offspring. In addition, the expression levels of development-related genes (Oct4, Nanog, Klf4 and Sox2) were analysed using real-time PCR, and the methylation states of imprinted genes (H19 and Snrpn) in these three groups were detected using methylation-specific PCR (MS-PCR) sequencing following bisulfite treatment. MAIN RESULTS AND THE ROLE OF CHANCE The in vitro experiments revealed that treating ROSI-derived zygotes with 250 nM Scriptaid for 10 h significantly improved the blastocyst formation rate (59%) compared with the non-treated group (38%) and further increased the birth rates of ROSI-derived embryos from 21% to 40% in vivo. Moreover, in ROSI-derived embryos, the expression of the Oct4, Nanog and Sox2 genes at the blastocyst stage was decreased, but the optimal Scriptaid treatment restored expression to a level similar to their ICSI counterparts. In addition, Scriptaid treatment moderately repaired the abnormal DNA methylation pattern in the imprinting control regions (ICRs) of H19 and Snrpn. LARGE SCALE DATA N/A LIMITATIONS, REASONS FOR CAUTION: Because of the ethics regarding the use of human gametes for ROSI studies, the mouse model was used as an approach to explore the effects of Scriptaid on the developmental potential of ROSI-derived embryos. However, to determine whether these findings can be applied to humans, further investigation will be required. WIDER IMPLICATIONS OF THE FINDINGS Scriptaid treatment provides a new means of improving the efficiency and safety of clinical human ROSI. STUDY FUNDING/COMPETING INTERESTS The study was financially supported through grants from the National Key Research Program of China (No. 2016YFC1304800); the National Natural Science Foundation of China (Nos: 81170756, 81571486); the Natural Science Foundation of Shanghai (Nos: 15140901700, 15ZR1424900) and the Programme for Professor of Special Appointment (Eastern Scholar) at Shanghai Institutions of Higher Learning. There are no conflicts of interest to declare.
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Affiliation(s)
- Pengcheng Kong
- Department of Laboratory Animal Sciences, School of Medicine, Shanghai Jiao Tong University, 280 South Chongqing, 200025 Shanghai, China.,Center of Reproductive Medicine, Shanghai First Maternity and Infant Hospital, Tongji University School of Medicine, 2699 West Gaoke, 200040 Shanghai, China
| | - Mingru Yin
- Department of Assisted Reproduction, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, 639 Zhizaoju road, 200011 Shanghai, China
| | - Dongbao Chen
- Department of Laboratory Animal Sciences, School of Medicine, Shanghai Jiao Tong University, 280 South Chongqing, 200025 Shanghai, China
| | - Shangang Li
- Department of Laboratory Animal Sciences, School of Medicine, Shanghai Jiao Tong University, 280 South Chongqing, 200025 Shanghai, China
| | - Yao Li
- Department of Laboratory Animal Sciences, School of Medicine, Shanghai Jiao Tong University, 280 South Chongqing, 200025 Shanghai, China
| | - Fengying Xing
- Department of Laboratory Animal Sciences, School of Medicine, Shanghai Jiao Tong University, 280 South Chongqing, 200025 Shanghai, China
| | - Manxi Jiang
- Department of Laboratory Animal Sciences, School of Medicine, Shanghai Jiao Tong University, 280 South Chongqing, 200025 Shanghai, China
| | - Zhenfu Fang
- Department of Laboratory Animal Sciences, School of Medicine, Shanghai Jiao Tong University, 280 South Chongqing, 200025 Shanghai, China
| | - Qifeng Lyu
- Department of Assisted Reproduction, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, 639 Zhizaoju road, 200011 Shanghai, China
| | - Xuejin Chen
- Department of Laboratory Animal Sciences, School of Medicine, Shanghai Jiao Tong University, 280 South Chongqing, 200025 Shanghai, China
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Oocyte aging-induced Neuronatin (NNAT) hypermethylation affects oocyte quality by impairing glucose transport in porcine. Sci Rep 2016; 6:36008. [PMID: 27782163 PMCID: PMC5080544 DOI: 10.1038/srep36008] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2016] [Accepted: 10/10/2016] [Indexed: 01/24/2023] Open
Abstract
DNA methylation plays important roles in regulating many physiological behaviors; however, few studies were focused on the changes of DNA methylation during oocyte aging. Early studies showed that some imprinted genes’ DNA methylation had been changed in aged mouse oocytes. In this study, we used porcine oocytes to test the hypothesis that oocyte aging would alter DNA methylation pattern of genes and disturb their expression in age oocytes, which affected the developmental potential of oocytes. We compared several different types of genes and found that the expression and DNA methylation of Neuronatin (NNAT) were disturbed in aged oocytes significantly. Additional experiments demonstrated that glucose transport was impaired in aged oocytes and injection of NNAT antibody into fresh oocytes led to the same effects on glucose transport. These results suggest that the expression of NNAT was declined by elevating DNA methylation, which affected oocyte quality by decreasing the ability of glucose transport in aged oocytes.
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11
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Zhao L, Zhang S, An X, Tan W, Tang B, Zhang X, Li Z. Sodium Fluoride Affects DNA Methylation of Imprinted Genes in Mouse Early Embryos. Cytogenet Genome Res 2015; 147:41-7. [DOI: 10.1159/000442067] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/14/2015] [Indexed: 11/19/2022] Open
Abstract
Fluorine is reported to affect embryonic development, but the underlining mechanism is unclear. The modification of DNA methylation of the H19 and Peg3 genes is important in embryonic development. Therefore, the effect of fluorine on methylation of H19 and Peg3 during early mouse embryos was studied. It was shown that the H19 gene was significantly downmethylated in E2.5, E3.5, and E4.5 embryos from pregnant mice treated with 120 mg/l NaF in drinking water for 48 h. But methylation of both H19 and Peg3 genes was disrupted when the parent male mice were treated with NaF for 35 days. H19 DNA methylation decreased significantly, while Peg3 was almost completely methylated. However, when pregnant mice, mated with NaF-treated male mice, were again treated with NaF for 48 h, either H19 or Peg3 methylation in the embryos decreased significantly. In addition, the mRNA level of H19 considerably increased in E3.5 and E4.5 embryos from NaF-treated pregnant mice. Further, the expression of DNMT1 decreased significantly after NaF treatment. Conclusively, we demonstrated that fluorine may adversely affect early embryonic development by disrupting the methylation of H19 and Peg3 through downregulation of DNMT1.
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H19 and MEST gene expression and histone modification in blastocysts cultured from vitrified and fresh two-cell mouse embryos. Reprod Biomed Online 2014; 29:559-66. [DOI: 10.1016/j.rbmo.2014.07.006] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2014] [Revised: 06/23/2014] [Accepted: 07/01/2014] [Indexed: 12/28/2022]
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13
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Comparative expression analysis of embryonic development-related genes at different stages of parthenogenetic and in vitro fertilized embryos in caprine. ZYGOTE 2013; 23:198-204. [PMID: 24229648 DOI: 10.1017/s096719941300049x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
Aberrant gene expression occurs in parthenogenetic embryos due to abnormal epigenetic modifications in the genome that probably diminish viability and enhance developmental abnormalities in these embryos. In the present study, five developmentally important genes (HPRT1, Cx43, Sox2, Mest and IGF2R) were analysed at different stages in parthenotes (haploid and diploid) and compared with similar stages in in vitro fertilized (IVF) embryos. The results indicated that in haploid parthenotes expression of HPRT1 was upregulated (P < 0.05) only at the 2-4-cell stage whereas Cx43 expression was significantly (P < 0.05) downregulated in all stages as compared with the control. However, expression of this gene was upregulated (P < 0.05) in 2-4-cell and morula stages of diploid parthenotes. Expression of Sox2 was significantly (P < 0.05) downregulated in morula stage haploid parthenotes, whereas it was upregulated (P < 0.05) in 8-16-cell stage diploid embryos. The expression of Mest was upregulated (P < 0.05) at the 2-4-cell stage of both haploid and diploid parthenotes, whereas it was downregulated in 8-16-cell stage diploid embryos as compared with control. IGF2R expression was upregulated (P < 0.05) only in morula stage haploid and diploid parthenote as compared with control. These results indicate that parthenogenetic embryos showed aberrant gene expression of developmentally important genes such as HPRT1, Cx43, Sox2, Mest and IGF2R in comparison with IVF embryos, this finding may be one of the major reasons for the poor developmental competence of parthenogenetic embryos.
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14
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Zhu JQ, Si YJ, Cheng LY, Xu BZ, Wang QW, Zhang X, Wang H, Liu ZP. Sodium fluoride disrupts DNA methylation of H19 and Peg3 imprinted genes during the early development of mouse embryo. Arch Toxicol 2013; 88:241-8. [PMID: 24030355 PMCID: PMC3906544 DOI: 10.1007/s00204-013-1122-5] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2013] [Accepted: 08/28/2013] [Indexed: 01/17/2023]
Abstract
Sodium fluoride (NaF) is associated with embryonic and fetal development abnormalities, but the mechanism by which this occurs is unclear. DNA methylation, an important epigenetic reprogramming mechanism, is essential for normal embryonic development. Thus, we investigated the effect of NaF on DNA methylation in early mouse embryos, as well as mouse sperm and liver using bisulfite sequencing and ELISA. Data indicate that H19, a paternally imprinted gene, compared to control embryos, was less methylated in 8-cell embryos from pregnant mice treated with NaF (100 mg/l) in drinking water for 48 h. Peg3, a maternally imprinted gene, and the Line1 repeated sequence were similarly methylated in NaF-treated and control embryos. Oral ingestion of NaF for 35 days did not significantly change Line1 and genomic global DNA methylation in the liver. H19, Rasgrf1, Line1, and genomic global DNA methylation were also similar in NaF-treated and control sperm. Female mice mated with NaF-treated male mice (35 days) had less methylated H19, but Peg3 was significantly more methylated. Line1 was similarly methylated in treated 8-cell embryos, compared to control embryos. NaF treatment of male mice before copulation significantly increased the expression of H19 in blastocysts, whereas H19 expression was not detected in 8-cell embryos. Data suggest that NaF may interact directly with the embryo to disrupt the maintenance of normal gene imprinting during pregnancy. Long-term NaF exposure of males may not directly affect DNA methylation of the sperm and liver, but the sperm may signal to early embryos with abnormal gene imprinting.
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Affiliation(s)
- Jia-Qiao Zhu
- College of Veterinary Medicine, Yangzhou University, Wenhui Rd, Yangzhou, 225009 Jiangsu People’s Republic of China
| | - Yang-Jun Si
- College of Veterinary Medicine, Yangzhou University, Wenhui Rd, Yangzhou, 225009 Jiangsu People’s Republic of China
| | - Lai-Yang Cheng
- College of Veterinary Medicine, Yangzhou University, Wenhui Rd, Yangzhou, 225009 Jiangsu People’s Republic of China
| | - Bao-Zeng Xu
- Departments of Surgery and Biology, McGill University, Montreal, QC Canada
| | - Qi-Wen Wang
- College of Veterinary Medicine, Yangzhou University, Wenhui Rd, Yangzhou, 225009 Jiangsu People’s Republic of China
| | - Xiao Zhang
- College of Veterinary Medicine, Yangzhou University, Wenhui Rd, Yangzhou, 225009 Jiangsu People’s Republic of China
| | - Heng Wang
- College of Veterinary Medicine, Yangzhou University, Wenhui Rd, Yangzhou, 225009 Jiangsu People’s Republic of China
| | - Zong-Ping Liu
- College of Veterinary Medicine, Yangzhou University, Wenhui Rd, Yangzhou, 225009 Jiangsu People’s Republic of China
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Kharche SD, Birade HS. Parthenogenesis and activation of mammalian oocytes for <i>in vitro</i> embryo production: A review. ACTA ACUST UNITED AC 2013. [DOI: 10.4236/abb.2013.42025] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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16
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Wang HY, Li YH, Sun L, Gao X, You L, Wang Y, Ma JL, Chen ZJ. Allotransplantation of cryopreserved prepubertal mouse ovaries restored puberty and fertility without affecting methylation profile of Snrpn-DMR. Fertil Steril 2012; 99:241-247.e4. [PMID: 22981174 DOI: 10.1016/j.fertnstert.2012.08.030] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2012] [Revised: 08/15/2012] [Accepted: 08/15/2012] [Indexed: 01/27/2023]
Abstract
OBJECTIVE To evaluate the genetic safety of vitrification on the methylation imprints and the development and fertility potential of prepubertal mouse ovaries. DESIGN Experimental animal study. SETTING University-based fertility center. ANIMAL(S) Institute of Cancer Research (ICR) 10-day-old female mice, 10-week-old adult female mice, and 12-week-old adult male mice. INTERVENTION(S) Vitrification of juvenile mouse ovaries was performed using ED20 and EG5.5/30 solutions followed by retrieval of fresh and vitrified-warmed germinal vesicle (GV) oocytes for Snrpn differentially methylated regions (DMR) methylation analyses, collection of mature oocytes from superovulated ovarian grafts, in vitro fertility(IVF), and early embryonic development after heterotopic allotransplantation. MAIN OUTCOME MEASURE(S) Analysis of methylation status of Snrpn-DMR, percentage of fertilization, and blastocysts formation. RESULT(S) Methylation status of Snrpn-DMR from vitrified-warmed GV oocytes did not show significant alteration compared with that of controls, although a significant reduction of viable oocytes was observed. Puberty as well as endocrine function was restored, and no significant difference was shown in number of follicles, percentage of mice retaining fertility, and blastocyst formation among three groups. CONCLUSION(S) Our study proved that vitrification of prepubertal mouse ovaries did not alter the methylation profile of Snrpn-DMR and subsequent allotransplantation; IVF could restore the development and fertility potential.
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Affiliation(s)
- Hong-Yan Wang
- Center for Reproductive Medicine, Provincial Hospital Affiliated to Shandong University, National Research Center for Assisted Reproductive Technology and Reproductive Genetics, Key Laboratory for Reproductive Endocrinology of Ministry of Education, Shandong Provincial Key Laboratory of Reproductive Medicine, Jinan, People's Republic of China; Key Laboratory of Fertility Preservation and Maintenance of Ningxia Medical University and Ministry of Education of China, Yinchuan, People's Republic of China
| | - Yun-Hong Li
- Key Laboratory of Fertility Preservation and Maintenance of Ningxia Medical University and Ministry of Education of China, Yinchuan, People's Republic of China
| | - Lei Sun
- Research Center of Developmental Biology, College of Basic Medical Sciences, Second Military Medical University, Shanghai, People's Republic of China
| | - Xuan Gao
- Center for Reproductive Medicine, Provincial Hospital Affiliated to Shandong University, National Research Center for Assisted Reproductive Technology and Reproductive Genetics, Key Laboratory for Reproductive Endocrinology of Ministry of Education, Shandong Provincial Key Laboratory of Reproductive Medicine, Jinan, People's Republic of China
| | - Li You
- Center for Reproductive Medicine, Provincial Hospital Affiliated to Shandong University, National Research Center for Assisted Reproductive Technology and Reproductive Genetics, Key Laboratory for Reproductive Endocrinology of Ministry of Education, Shandong Provincial Key Laboratory of Reproductive Medicine, Jinan, People's Republic of China
| | - Yin Wang
- Key Laboratory of Fertility Preservation and Maintenance of Ningxia Medical University and Ministry of Education of China, Yinchuan, People's Republic of China
| | - Jing-Long Ma
- Center for Reproductive Medicine, Provincial Hospital Affiliated to Shandong University, National Research Center for Assisted Reproductive Technology and Reproductive Genetics, Key Laboratory for Reproductive Endocrinology of Ministry of Education, Shandong Provincial Key Laboratory of Reproductive Medicine, Jinan, People's Republic of China
| | - Zi-Jiang Chen
- Center for Reproductive Medicine, Provincial Hospital Affiliated to Shandong University, National Research Center for Assisted Reproductive Technology and Reproductive Genetics, Key Laboratory for Reproductive Endocrinology of Ministry of Education, Shandong Provincial Key Laboratory of Reproductive Medicine, Jinan, People's Republic of China.
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17
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Liang XW, Ge ZJ, Guo L, Luo SM, Han ZM, Schatten H, Sun QY. Effect of postovulatory oocyte aging on DNA methylation imprinting acquisition in offspring oocytes. Fertil Steril 2011; 96:1479-84. [PMID: 21982284 DOI: 10.1016/j.fertnstert.2011.09.022] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2011] [Revised: 09/11/2011] [Accepted: 09/12/2011] [Indexed: 01/20/2023]
Abstract
OBJECTIVE To investigate whether postovulatory aging of oocytes in the mother affects DNA methylation acquisition of imprinted genes in oocytes from the offspring. DESIGN Randomized research experimental study. SETTING Academic basic research laboratory. ANIMAL(S) Mice. INTERVENTION(S) Fresh oocytes and aged oocytes from mothers were artificially inseminated, and oocytes were collected from the resultant offspring. MAIN OUTCOME MEASURE(S) Methylation status was evaluated at differentially methylated regions (DMRs) in oocytes of maternally imprinted genes Peg3, Snrpn, and Peg1 and paternally imprinted gene H19. RESULT(S) Our results showed that methylation patterns at DMRs of Peg3, Snrpn, Peg1, and H19 in oocytes from aged-oocyte offspring were mainly normal, with only a small number of oocytes showing aberrant methylation in the DMR of Peg3. CONCLUSION(S) Postovulatory oocyte aging causes a decline in reproductive outcomes but does not evidently lead to defects in DNA methylation imprinting acquisition in the oocytes from viable offspring.
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Affiliation(s)
- Xing-Wei Liang
- State Key Laboratory of Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing, People's Republic of China
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Ragina NP, Schlosser K, Knott JG, Senagore PK, Swiatek PJ, Chang EA, Fakhouri WD, Schutte BC, Kiupel M, Cibelli JB. Downregulation of H19 improves the differentiation potential of mouse parthenogenetic embryonic stem cells. Stem Cells Dev 2011; 21:1134-44. [PMID: 21793658 DOI: 10.1089/scd.2011.0152] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023] Open
Abstract
Parthenogenetic embryonic stem cells (P-ESCs) offer an alternative source of pluripotent cells, which hold great promise for autologous transplantation and regenerative medicine. P-ESCs have been successfully derived from blastocysts of several mammalian species. However, compared with biparental embryonic stem cells (B-ESCs), P-ESCs are limited in their ability to fully differentiate into all 3 germ layers. For example, it has been observed that there is a differentiation bias toward ectoderm derivatives at the expense of endoderm and mesoderm derivatives-muscle in particular-in chimeric embryos, teratomas, and embryoid bodies. In the present study we found that H19 expression was highly upregulated in P-ESCs with more than 6-fold overexpression compared with B-ESCs. Thus, we hypothesized that manipulation of the H19 gene in P-ESCs would alleviate their limitations and allow them to function like B-ESCs. To test this hypothesis we employed a small hairpin RNA approach to reduce the amount of H19 transcripts in mouse P-ESCs. We found that downregulation of H19 led to an increase of mesoderm-derived muscle and endoderm in P-ESCs teratomas similar to that observed in B-ESCs teratomas. This phenomenon coincided with upregulation of mesoderm-specific genes such as Myf5, Myf6, and MyoD. Moreover, H19 downregulated P-ESCs differentiated into a higher percentage of beating cardiomyocytes compared with control P-ESCs. Collectively, these results suggest that P-ESCs are amenable to molecular modifications that bring them functionally closer to true ESCs.
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Affiliation(s)
- Neli P Ragina
- Department of Animal Science, Michigan State University, East Lansing, MI 48824, USA
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19
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McElroy SL, Byrne JA, Chavez SL, Behr B, Hsueh AJ, Westphal LM, Reijo Pera RA. Parthenogenic blastocysts derived from cumulus-free in vitro matured human oocytes. PLoS One 2010; 5:e10979. [PMID: 20539753 PMCID: PMC2881862 DOI: 10.1371/journal.pone.0010979] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2010] [Accepted: 05/11/2010] [Indexed: 01/25/2023] Open
Abstract
Background Approximately 20% of oocytes are classified as immature and discarded following intracytoplasmic sperm injection (ICSI) procedures. These oocytes are obtained from gonadotropin-stimulated patients, and are routinely removed from the cumulus cells which normally would mature the oocytes. Given the ready access to these human oocytes, they represent a potential resource for both clinical and basic science application. However culture conditions for the maturation of cumulus-free oocytes have not been optimized. We aimed to improve maturation conditions for cumulus-free oocytes via culture with ovarian paracrine/autocrine factors identified by single cell analysis. Methodology/Principal Finding Immature human oocytes were matured in vitro via supplementation with ovarian paracrine/autocrine factors that were selected based on expression of ligands in the cumulus cells and their corresponding receptors in oocytes. Matured oocytes were artificially activated to assess developmental competence. Gene expression profiles of parthenotes were compared to IVF/ICSI embryos at morula and blastocyst stages. Following incubation in medium supplemented with ovarian factors (BDNF, IGF-I, estradiol, GDNF, FGF2 and leptin), a greater percentage of oocytes demonstrated nuclear maturation and subsequently, underwent parthenogenesis relative to control. Similarly, cytoplasmic maturation was also improved as indicated by development to blastocyst stage. Parthenogenic blastocysts exhibited mRNA expression profiles similar to those of blastocysts obtained after IVF/ICSI with the exception for MKLP2 and PEG1. Conclusions/Significance Human cumulus-free oocytes from hormone-stimulated cycles are capable of developing to blastocysts when cultured with ovarian factor supplementation. Our improved IVM culture conditions may be used for obtaining mature oocytes for clinical purposes and/or for derivation of embryonic stem cells following parthenogenesis or nuclear transfer.
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Affiliation(s)
- Sohyun L. McElroy
- Center for Human Embryonic Stem Cell Research and Education, Institute for Stem Cell Biology and Regenerative Medicine, Stanford University, Palo Alto, California, United States of America
- Department of Obstetrics and Gynecology, Stanford University, Palo Alto, California, United States of America
| | - James A. Byrne
- Center for Human Embryonic Stem Cell Research and Education, Institute for Stem Cell Biology and Regenerative Medicine, Stanford University, Palo Alto, California, United States of America
- Department of Obstetrics and Gynecology, Stanford University, Palo Alto, California, United States of America
| | - Shawn L. Chavez
- Center for Human Embryonic Stem Cell Research and Education, Institute for Stem Cell Biology and Regenerative Medicine, Stanford University, Palo Alto, California, United States of America
- Department of Obstetrics and Gynecology, Stanford University, Palo Alto, California, United States of America
| | - Barry Behr
- Department of Obstetrics and Gynecology, Stanford University, Palo Alto, California, United States of America
- Division of Reproductive Endocrinology and Infertility, Stanford Hospital and Clinics, Palo Alto, California, United States of America
| | - Aaron J. Hsueh
- Department of Obstetrics and Gynecology, Stanford University, Palo Alto, California, United States of America
| | - Lynn M. Westphal
- Department of Obstetrics and Gynecology, Stanford University, Palo Alto, California, United States of America
- Division of Reproductive Endocrinology and Infertility, Stanford Hospital and Clinics, Palo Alto, California, United States of America
| | - Renee A. Reijo Pera
- Center for Human Embryonic Stem Cell Research and Education, Institute for Stem Cell Biology and Regenerative Medicine, Stanford University, Palo Alto, California, United States of America
- Department of Obstetrics and Gynecology, Stanford University, Palo Alto, California, United States of America
- * E-mail:
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Maruotti J, Dai XP, Brochard V, Jouneau L, Liu J, Bonnet-Garnier A, Jammes H, Vallier L, Brons IGM, Pedersen R, Renard JP, Zhou Q, Jouneau A. Nuclear Transfer-Derived Epiblast Stem Cells Are Transcriptionally and Epigenetically Distinguishable from Their Fertilized-Derived Counterparts. Stem Cells 2010; 28:743-52. [DOI: 10.1002/stem.400] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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21
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Chang G, Liu S, Wang F, Zhang Y, Kou Z, Chen D, Gao S. Differential methylation status of imprinted genes in nuclear transfer derived ES (NT-ES) cells. Genomics 2009; 93:112-9. [DOI: 10.1016/j.ygeno.2008.09.011] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2008] [Revised: 09/02/2008] [Accepted: 09/17/2008] [Indexed: 11/26/2022]
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22
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Park CH, Kim HS, Lee SG, Lee CK. Methylation status of differentially methylated regions at Igf2/H19 locus in porcine gametes and preimplantation embryos. Genomics 2008; 93:179-86. [PMID: 18983907 DOI: 10.1016/j.ygeno.2008.10.002] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2008] [Revised: 10/01/2008] [Accepted: 10/03/2008] [Indexed: 01/09/2023]
Abstract
The aim of this study was to demonstrate how differential methylation imprints are established during porcine preimplantation embryo development. For the methylation analysis, the primers for the three Igf2/H19 DMRs were designed and based upon previously published sequences. The methylation marks of Igf2/H19 DMRs were analysed in sperm and MII oocytes with our results showing that these regions are fully methylated in sperm but remain unmethylated in MII oocytes. In order to identify the methylation pattern at the pronuclear stage, we indirectly compared the methylation profile of Igf2/H19 DMR3 in each zygote derived by in vitro fertilization, parthenogenesis, and androgenesis. Interestingly, this region was found to be differently methylated according to parental origins; DMR3 was hemimethylated in in vitro fertilized zygotes, fully methylated in parthenogenetic zygotes, and demethylated in androgenetic zygotes. These results indicate that the methylation mark of the paternal allele is erased by active demethylation, and that of the maternal one is de novo methylated. We further examined the methylation imprints of Igf2/H19 DMR3 during early embryonic development. The hemimethylated pattern as seen in zygotes fertilized in vitro was observed up to the 4-cell embryo stage. However, this mark was exclusively demethylated at the 8-cell stage and then restored at the morula stage. These results suggest that methylation imprints are established via dynamic changes during early embryonic development in porcine embryos.
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Affiliation(s)
- Chi-Hun Park
- Department of Agricultural Biotechnology, Seoul National University San 56-1 Shillim-dong Gwanak-gu, Seoul 151-921, Korea
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Liang XW, Zhu JQ, Miao YL, Liu JH, Wei L, Lu SS, Hou Y, Schatten H, Lu KH, Sun QY. Loss of methylation imprint of Snrpn in postovulatory aging mouse oocyte. Biochem Biophys Res Commun 2008; 371:16-21. [DOI: 10.1016/j.bbrc.2008.03.105] [Citation(s) in RCA: 50] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2008] [Accepted: 03/23/2008] [Indexed: 11/24/2022]
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