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Wang J, Liu X, Yang J, Guo H, Li J, Huo L, Zhao H, Wang X, Yan X, Li B, Sun Y. Effects of small-molecule compounds on fibroblast properties in golden snub-nosed monkey (Rhinopithecus roxellana). J Med Primatol 2021; 50:323-331. [PMID: 34664268 DOI: 10.1111/jmp.12549] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2021] [Revised: 09/19/2021] [Accepted: 09/27/2021] [Indexed: 11/30/2022]
Abstract
BACKGROUND Golden snub-nosed monkey (Rhinopithecus roxellana) is an endangered primate species, whose molecular material for conservation purposes has not yet been maintained. Although small-molecule compounds (SMCs) have been reported to improve induced pluripotent stem cells (iPSCs), their efficiency in the interspecies-transferred nucleus is still unknown. METHODS We thus used the fibroblasts from the golden snub-nosed monkey treated with SMC as donor cells, injected into the enucleated oocytes of goats, to test such efficiency. Gene expression profiles in the cell-constructed embryos with and without SMCs were compared by qPCR. RESULTS The results show that cell morphology undergoes remarkable changes (volume is smaller than normal cells, and many black spots in the cytoplasm were found); pluripotent genes (Oct4, Sox2, and Nanog) significantly increased with SMC treatment. CONCLUSIONS This study demonstrates that SMCs alter the properties of donor cells and promote the expression of pluripotent genes in hybrid embryos.
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Affiliation(s)
- Juanjuan Wang
- Shaanxi Key Laboratory for Animal Conservation, Key Laboratory of Resource Biology and Biotechnology in Western China, Ministry of Education, College of Life Science, Northwest University, Xi'an, China
| | - Xin Liu
- Shaanxi Key Laboratory for Animal Conservation, Key Laboratory of Resource Biology and Biotechnology in Western China, Ministry of Education, College of Life Science, Northwest University, Xi'an, China
| | - Jing Yang
- Shaanxi Key Laboratory for Animal Conservation, Key Laboratory of Resource Biology and Biotechnology in Western China, Ministry of Education, College of Life Science, Northwest University, Xi'an, China
| | - Hanxing Guo
- Shaanxi Key Laboratory for Animal Conservation, Key Laboratory of Resource Biology and Biotechnology in Western China, Ministry of Education, College of Life Science, Northwest University, Xi'an, China
| | - Jingjing Li
- The school of Life Science and Technology, Xi'an Jiaotong University, Xi'an, China
| | - Lihui Huo
- Shaanxi Key Laboratory for Animal Conservation, Key Laboratory of Resource Biology and Biotechnology in Western China, Ministry of Education, College of Life Science, Northwest University, Xi'an, China
| | - Haitao Zhao
- Shaanxi Institute of Zoology, Northwest Institute of Endangered Zoology Species, Xi'an, China
| | - Xiaowei Wang
- Shaanxi Institute of Zoology, Northwest Institute of Endangered Zoology Species, Xi'an, China
| | - Xingrong Yan
- Shaanxi Key Laboratory for Animal Conservation, Key Laboratory of Resource Biology and Biotechnology in Western China, Ministry of Education, College of Life Science, Northwest University, Xi'an, China
| | - Baoguo Li
- Shaanxi Key Laboratory for Animal Conservation, Key Laboratory of Resource Biology and Biotechnology in Western China, Ministry of Education, College of Life Science, Northwest University, Xi'an, China.,Center for Excellence in Animal Evolution and Genetics, Chinese Academy of Science, Kumming, China
| | - Yu Sun
- Shaanxi Key Laboratory for Animal Conservation, Key Laboratory of Resource Biology and Biotechnology in Western China, Ministry of Education, College of Life Science, Northwest University, Xi'an, China
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Saadeldin IM, Moulavi F, Swelum AAA, Khorshid SS, Hamid HF, Hosseini SM. Vitrification of camel oocytes transiently impacts mitochondrial functions without affecting the developmental potential after intracytoplasmic sperm injection and parthenogenetic activation. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2020; 27:44604-44613. [PMID: 33029771 DOI: 10.1007/s11356-020-11070-x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/14/2020] [Accepted: 09/30/2020] [Indexed: 06/11/2023]
Abstract
Oocyte vitrification preserves the female genetic resources of elite dromedary camels. In the current study, we aimed to explore the effects of vitrification of camel oocytes on mitochondrial activity, redox stress, and expression of genes related to mitochondrial function, apoptosis, pluripotency, and cytoskeleton. Moreover, we investigated developmental competence of vitrified oocytes after parthenogenetic activation. Oocytes vitrified with the Cryotop method were compared with the fresh oocytes. Our results showed that vitrification led to increased ROS production in oocytes as evidenced by an increase in the DCFDHA fluorescence intensity, and lower mitochondrial activity. At the molecular level, vitrification reduced mRNA expression of many genes, including those related to mitochondrial function (TFAM, MT-CO1, MFN1, ATP1A1, NRF1), pluripotency (SOX2 and POU5F1), and apoptosis (p53 and BAX). In contrast, expression of KLF4 and cytoskeleton-related genes (ACTB and KRT8) was not affected. However, we found no difference in the rates of oocyte survival, cleavage, and blastocyst development, and blastocyst hatching between fresh and vitrified oocytes after warming. Our results indicate that although vitrification of camel metaphase II (MII) oocytes adversely affected mitochondrial functions, the effect was transient without compromising the developmental potential of the oocytes after parthenogenetic activation.
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Affiliation(s)
- Islam M Saadeldin
- Department of Animal Production, College of Food and Agricultural Sciences, King Saud University, Riyadh, 11451, Saudi Arabia.
- Department of Physiology, Faculty of Veterinary Medicine, Zagazig University, Zagazig, 44519, Egypt.
| | - Fariba Moulavi
- Department of Embryology, Camel Advanced Reproductive Technologies Centre, Government of Dubai, Dubai, United Arab Emirates
| | - Ayman Abdel-Aziz Swelum
- Department of Animal Production, College of Food and Agricultural Sciences, King Saud University, Riyadh, 11451, Saudi Arabia
- Department of Theriogenology, Faculty of Veterinary Medicine, Zagazig University, Zagazig, 44519, Egypt
| | - Sokhangouy Saiede Khorshid
- Department of Embryology, Camel Advanced Reproductive Technologies Centre, Government of Dubai, Dubai, United Arab Emirates
| | - Hossini-Fahraji Hamid
- Department of Embryology, Camel Advanced Reproductive Technologies Centre, Government of Dubai, Dubai, United Arab Emirates
| | - Sayyed Morteza Hosseini
- Department of Embryology, Camel Advanced Reproductive Technologies Centre, Government of Dubai, Dubai, United Arab Emirates.
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3
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Mitra S, Sharma P, Kaur S, Khursheed MA, Gupta S, Chaudhary M, Kurup AJ, Ramachandran R. Dual regulation of lin28a by Myc is necessary during zebrafish retina regeneration. J Cell Biol 2019; 218:489-507. [PMID: 30606747 PMCID: PMC6363449 DOI: 10.1083/jcb.201802113] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2018] [Revised: 08/31/2018] [Accepted: 10/29/2018] [Indexed: 02/06/2023] Open
Abstract
Cellular reprogramming leading to induction of Muller glia-derived progenitor cells (MGPCs) with stem cell characteristics is essential for zebrafish retina regeneration. Although several regeneration-specific genes are characterized, the significance of MGPC-associated Mycb induction remains unknown. Here, we show that early expression of Mycb induces expression of genes like ascl1a, a known activator of lin28a in MGPCs. Notably, mycb is simultaneously activated by Ascl1a and repressed by Insm1a in regenerating retina. Here, we unravel a dual role of Mycb in lin28a expression, both as an activator through Ascl1a in MGPCs and a repressor in combination with Hdac1 in neighboring cells. Myc inhibition reduces the number of MGPCs and abolishes normal regeneration. Myc in collaboration with Hdac1 inhibits her4.1, an effector of Delta-Notch signaling. Further, we also show the repressive role of Delta-Notch signaling on lin28a expression in post-injured retina. Our studies reveal mechanistic understanding of Myc pathway during zebrafish retina regeneration, which could pave way for therapeutic intervention during mammalian retina regeneration.
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Affiliation(s)
- Soumitra Mitra
- Indian Institute of Science Education and Research, Mohali, Knowledge City, Sector 81, SAS Nagar, Manauli, Mohali, Punjab, India
| | - Poonam Sharma
- Indian Institute of Science Education and Research, Mohali, Knowledge City, Sector 81, SAS Nagar, Manauli, Mohali, Punjab, India
| | - Simran Kaur
- Indian Institute of Science Education and Research, Mohali, Knowledge City, Sector 81, SAS Nagar, Manauli, Mohali, Punjab, India
| | - Mohammad Anwar Khursheed
- Indian Institute of Science Education and Research, Mohali, Knowledge City, Sector 81, SAS Nagar, Manauli, Mohali, Punjab, India
| | - Shivangi Gupta
- Indian Institute of Science Education and Research, Mohali, Knowledge City, Sector 81, SAS Nagar, Manauli, Mohali, Punjab, India
| | - Mansi Chaudhary
- Indian Institute of Science Education and Research, Mohali, Knowledge City, Sector 81, SAS Nagar, Manauli, Mohali, Punjab, India
| | - Akshai J Kurup
- Indian Institute of Science Education and Research, Mohali, Knowledge City, Sector 81, SAS Nagar, Manauli, Mohali, Punjab, India
| | - Rajesh Ramachandran
- Indian Institute of Science Education and Research, Mohali, Knowledge City, Sector 81, SAS Nagar, Manauli, Mohali, Punjab, India
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Tanabe Y, Kuwayama H, Wakayama S, Nagatomo H, Ooga M, Kamimura S, Kishigami S, Wakayama T. Production of cloned mice using oocytes derived from ICR-outbred strain. Reproduction 2017; 154:859-866. [PMID: 28971892 DOI: 10.1530/rep-17-0372] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2017] [Revised: 09/26/2017] [Accepted: 09/29/2017] [Indexed: 01/08/2023]
Abstract
Recently, it has become possible to generate cloned mice using a somatic cell nucleus derived from not only F1 strains but also inbred strains. However, to date, all cloned mice have been generated using F1 mouse oocytes as the recipient cytoplasm. Here, we attempted to generate cloned mice from oocytes derived from the ICR-outbred mouse strain. Cumulus cell nuclei derived from BDF1 and ICR mouse strains were injected into enucleated oocytes of both strains to create four groups. Subsequently, the quality and developmental potential of the cloned embryos were examined. ICR oocytes were more susceptible to damage associated with nuclear injection than BDF1 oocytes, but their activation rate and several epigenetic markers of reconstructed cloned oocytes/embryos were similar to those of BDF1 oocytes. When cloned embryos were cultured for up to 4 days, those derived from ICR oocytes demonstrated a significantly decreased rate of development to the blastocyst stage, irrespective of the nuclear donor mouse strain. However, when cloned embryos derived from ICR oocytes were transferred to female recipients at the two-cell stage, healthy cloned offspring were obtained at a success rate similar to that using BDF1 oocytes. The ICR mouse strain is very popular for biological research and less expensive to establish than most other strains. Thus, the results of this study should promote the study of nuclear reprogramming not only by reducing the cost of experiments but also by allowing us to study the effect of oocyte cytoplasm by comparing it between strains.
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Affiliation(s)
- Yoshiaki Tanabe
- Faculty of Life and Environmental SciencesUniversity of Yamanashi, Yamanashi, Japan
| | - Hiroki Kuwayama
- Faculty of Life and Environmental SciencesUniversity of Yamanashi, Yamanashi, Japan
| | - Sayaka Wakayama
- Advanced Biotechnology CenterUniversity of Yamanashi, Yamanashi, Japan
| | | | - Masatoshi Ooga
- Faculty of Life and Environmental SciencesUniversity of Yamanashi, Yamanashi, Japan
| | - Satoshi Kamimura
- Faculty of Life and Environmental SciencesUniversity of Yamanashi, Yamanashi, Japan
| | - Satoshi Kishigami
- Faculty of Life and Environmental SciencesUniversity of Yamanashi, Yamanashi, Japan.,Advanced Biotechnology CenterUniversity of Yamanashi, Yamanashi, Japan
| | - Teruhiko Wakayama
- Faculty of Life and Environmental SciencesUniversity of Yamanashi, Yamanashi, Japan .,Advanced Biotechnology CenterUniversity of Yamanashi, Yamanashi, Japan
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5
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Xu W, Huo L, Li J, Xu C, Wang S, Yang Y, Liu C, Zheng X, Feng X, Yan X. Effects of Alcohol on Mitochondrial Functions of Cumulus Cells in Mice. Cell Reprogram 2017; 19:123-131. [PMID: 28170286 DOI: 10.1089/cell.2016.0023] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Alcohol is an important compound used in food, agriculture, and medicine. In this study, we investigated the effect of alcohol on oocyte quality in mice by exposing animals for different duration times during an estrous cycle. Cumulus-oocyte complexes were collected from mice after pregnant mare serum gonadotropin- and human chorionic gonadotropin-induced superovulation. Ovulation number, E2 level in serum, and parthenogenetic embryo development in vitro were evaluated. Mitochondrial gene expression, mitochondrial membrane potential, and reactive oxygen species (ROS) levels in the cumulus were also assessed. The results showed that acute exposure to alcohol did not affect ovulation time (p > 0.05). Blasocyst formation rate in vitro was significantly improved after 1 and 2 days of alcohol exposure (p < 0.01). Mitochondrial membrane potential was significantly increased after 1-4 days of alcohol exposure (p < 0.05), but it decreased after 5 days (p < 0.05). ROS levels remained relatively low after 2, 3, and 4 days of exposure (p < 0.05), and they significantly increased after 6 days (p < 0.05). In addition, alcohol altered the expression of mitochondrial and nuclear genes in the cumulus. Taken together, our data suggest that acute exposure to alcohol affects oocyte quality by influencing the function and gene expression in the cumulus. These results underscore potential implications for the development of human reproductive therapeutics.
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Affiliation(s)
- Wanlu Xu
- 1 Shaanxi Key Laboratory for Animal Conservation, Key Laboratory of Resource Biology and Biotechnology in Western China, Ministry of Education, College of Life Science, Northwest University , Xi'an, China
| | - Lihui Huo
- 1 Shaanxi Key Laboratory for Animal Conservation, Key Laboratory of Resource Biology and Biotechnology in Western China, Ministry of Education, College of Life Science, Northwest University , Xi'an, China
| | - Jingjing Li
- 1 Shaanxi Key Laboratory for Animal Conservation, Key Laboratory of Resource Biology and Biotechnology in Western China, Ministry of Education, College of Life Science, Northwest University , Xi'an, China
| | - Chunli Xu
- 1 Shaanxi Key Laboratory for Animal Conservation, Key Laboratory of Resource Biology and Biotechnology in Western China, Ministry of Education, College of Life Science, Northwest University , Xi'an, China
| | - Shuang Wang
- 2 Department of Experimental Surgery of Xijing Hospital, The Fourth Military Medical University , Xi'an, China
| | - Yanhong Yang
- 3 Department of Obstetrics & Gynecology, Tangdu Hospital, The Fourth Military Medical University , Xi'an, China
| | - Chuang Liu
- 3 Department of Obstetrics & Gynecology, Tangdu Hospital, The Fourth Military Medical University , Xi'an, China
| | - Xiaomin Zheng
- 4 Key Laboratory of Fertility Preservation and Maintenance , Ministry of Education, Yinchuan, China .,5 Institute of Biomedicine, Pharmacology, Biomedicum Helsinki, University of Helsinki , Helsinki, Finland
| | - Xiuliang Feng
- 2 Department of Experimental Surgery of Xijing Hospital, The Fourth Military Medical University , Xi'an, China
| | - Xingrong Yan
- 1 Shaanxi Key Laboratory for Animal Conservation, Key Laboratory of Resource Biology and Biotechnology in Western China, Ministry of Education, College of Life Science, Northwest University , Xi'an, China
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Wang B, Pfeiffer MJ, Drexler HCA, Fuellen G, Boiani M. Proteomic Analysis of Mouse Oocytes Identifies PRMT7 as a Reprogramming Factor that Replaces SOX2 in the Induction of Pluripotent Stem Cells. J Proteome Res 2016; 15:2407-21. [PMID: 27225728 DOI: 10.1021/acs.jproteome.5b01083] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
The reprogramming process that leads to induced pluripotent stem cells (iPSCs) may benefit from adding oocyte factors to Yamanaka's reprogramming cocktail (OCT4, SOX2, KLF4, with or without MYC; OSK(M)). We previously searched for such facilitators of reprogramming (the reprogrammome) by applying label-free LC-MS/MS analysis to mouse oocytes, producing a catalog of 28 candidates that are (i) able to robustly access the cell nucleus and (ii) shared between mature mouse oocytes and pluripotent embryonic stem cells. In the present study, we hypothesized that our 28 reprogrammome candidates would also be (iii) abundant in mature oocytes, (iv) depleted after the oocyte-to-embryo transition, and (v) able to potentiate or replace the OSKM factors. Using LC-MS/MS and isotopic labeling methods, we found that the abundance profiles of the 28 proteins were below those of known oocyte-specific and housekeeping proteins. Of the 28 proteins, only arginine methyltransferase 7 (PRMT7) changed substantially during mouse embryogenesis and promoted the conversion of mouse fibroblasts into iPSCs. Specifically, PRMT7 replaced SOX2 in a factor-substitution assay, yielding iPSCs. These findings exemplify how proteomics can be used to prioritize the functional analysis of reprogrammome candidates. The LC-MS/MS data are available via ProteomeXchange with identifier PXD003093.
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Affiliation(s)
- Bingyuan Wang
- Key Laboratory of Farm Animal Genetic Resources and Germplasm Innovation of Ministry of Agriculture, Institute of Animal Science, Chinese Academy of Agricultural Sciences , Beijing 100193, China
| | - Martin J Pfeiffer
- Max Planck Institute for Molecular Biomedicine , Röntgenstraße 20, 48149 Münster, Germany
| | - Hannes C A Drexler
- Max Planck Institute for Molecular Biomedicine , Bioanalytical Mass Spectrometry Facility, Röntgenstraße 20, 48149 Münster, Germany
| | - Georg Fuellen
- Institute for Biostatistics and Informatics in Medicine and Ageing Research, Rostock University Medical Center, 18057 Rostock, Germany
| | - Michele Boiani
- Max Planck Institute for Molecular Biomedicine , Röntgenstraße 20, 48149 Münster, Germany
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Yan X, Yang Y, Liu W, Geng W, Du H, Cui J, Xie X, Hua J, Yu S, Li L, Chen F. Differentiation of neuron-like cells from mouse parthenogenetic embryonic stem cells. Neural Regen Res 2013; 8:293-300. [PMID: 25206669 PMCID: PMC4107530 DOI: 10.3969/j.issn.1673-5374.2013.04.001] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2012] [Accepted: 12/10/2012] [Indexed: 11/23/2022] Open
Abstract
Parthenogenetic embryonic stem cells have pluripotent differentiation potentials, akin to fertilized embryo-derived embryonic stem cells. The aim of this study was to compare the neuronal differentiation potential of parthenogenetic and fertilized embryo-derived embryonic stem cells. Before differentiation, karyotype analysis was performed, with normal karyotypes detected in both parthenogenetic and fertilized embryo-derived embryonic stem cells. Sex chromosomes were identified as XX. Immunocytochemistry and quantitative real-time PCR detected high expression of the pluripotent gene, Oct4, at both the mRNA and protein levels, indicating pluripotent differentiation potential of the two embryonic stem cell subtypes. Embryonic stem cells were induced with retinoic acid to form embryoid bodies, and then dispersed into single cells. Single cells were differentiated in N2 differentiation medium for 9 days. Immunocytochemistry showed parthenogenetic and fertilized embryo-derived embryonic stem cells both express the neuronal cell markers nestin, βIII-tubulin and myelin basic protein. Quantitative real-time PCR found expression of neurogenesis related genes (Sox-1, Nestin, GABA, Pax6, Zic5 and Pitx1) in both types of embryonic stem cells, and Oct4 expression was significantly decreased. Nestin and Pax6 expression in parthenogenetic embryonic stem cells was significantly higher than that in fertilized embryo-derived embryonic stem cells. Thus, our experimental findings indicate that parthenogenetic embryonic stem cells have stronger neuronal differentiation potential than fertilized embryo-derived embryonic stem cells.
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Affiliation(s)
- Xingrong Yan
- College of Life Sciences, Northwest University, Xi’an 710069, Shaanxi Province, China
| | - Yanhong Yang
- Department of Obstetrics & Gynecology, Tangdu Hospital, the Fourth Military Medical University of Chinese PLA, Xi’an 710038, Shaanxi Province, China
| | - Wei Liu
- College of Life Sciences, Northwest University, Xi’an 710069, Shaanxi Province, China
| | - Wenxin Geng
- College of Life Sciences, Northwest University, Xi’an 710069, Shaanxi Province, China
| | - Huichong Du
- College of Life Sciences, Northwest University, Xi’an 710069, Shaanxi Province, China
| | - Jihong Cui
- College of Life Sciences, Northwest University, Xi’an 710069, Shaanxi Province, China
| | - Xin Xie
- College of Life Sciences, Northwest University, Xi’an 710069, Shaanxi Province, China
| | - Jinlian Hua
- College of Veterinary Medicine, Northwest A&F University, Yangling 712100, Shaanxi Province, China
| | - Shumin Yu
- College of Veterinary Medicine, Sichuan Agricultural University, Yaan 625001, Sichuan Province, China
| | - Liwen Li
- College of Life Sciences, Northwest University, Xi’an 710069, Shaanxi Province, China
| | - Fulin Chen
- College of Life Sciences, Northwest University, Xi’an 710069, Shaanxi Province, China
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Yan X, Yang Y, Zheng X, Cui J, Xie X, Li L, Chen F, Hua J, Zhang Y. Expression of
FGF4
mRNA is mediated by mating behaviours in mice. Cell Biochem Funct 2012; 31:526-31. [DOI: 10.1002/cbf.2931] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2012] [Revised: 09/28/2012] [Accepted: 10/24/2012] [Indexed: 01/02/2023]
Affiliation(s)
- Xing‐Rong Yan
- College of Life Science Northwest University Xi'an Shaanxi Province China
| | - Yan‐hong Yang
- Department of Obstetrics & Gynecology Tangdu Hospital, the Fourth Military Medical University Xi'an China
| | - Xiao‐min Zheng
- Institute of Biomedicine Helsinki University Helsinki Finland
| | - Ji‐Hong Cui
- College of Life Science Northwest University Xi'an Shaanxi Province China
| | - Xin Xie
- College of Life Science Northwest University Xi'an Shaanxi Province China
| | - Li‐Wen Li
- College of Life Science Northwest University Xi'an Shaanxi Province China
| | - Fu‐Lin Chen
- College of Life Science Northwest University Xi'an Shaanxi Province China
| | - Jin‐Lian Hua
- College of Veterinary Medicine Northwest A & F University Yangling Shaanxi Province China
| | - Yu‐Sen Zhang
- School of Mathematics and Statistics Shandong University at Weihai Weihai China
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Markholt S, Grøndahl M, Ernst E, Andersen CY, Ernst E, Lykke-Hartmann K. Global gene analysis of oocytes from early stages in human folliculogenesis shows high expression of novel genes in reproduction. ACTA ACUST UNITED AC 2012; 18:96-110. [DOI: 10.1093/molehr/gar083] [Citation(s) in RCA: 51] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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10
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Marandel L, Labbe C, Bobe J, Le Bail PY. nanog 5'-upstream sequence, DNA methylation, and expression in gametes and early embryo reveal striking differences between teleosts and mammals. Gene 2011; 492:130-7. [PMID: 22037485 DOI: 10.1016/j.gene.2011.10.037] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2011] [Revised: 10/11/2011] [Accepted: 10/12/2011] [Indexed: 01/14/2023]
Abstract
The nanog gene plays a major role in vertebrate development and was only recently discovered in teleosts. In order to gain new insight into its regulation in gametes and early embryo in teleost fish, the present study aimed at characterizing nanog upstream sequence features and DNA methylation, as well as early embryonic expression pattern in a Cyprinid fish, the goldfish. Using an in silico approach, we were able to demonstrate that despite the existence of conserved regulatory motifs in the promoter region of the nanog gene, specific features known to play a major role in the regulation of Nanog in mammals were missing in teleosts. The analysis of CpG sites in the upstream region of the nanog genes in goldfish revealed a significant DNA methylation state in oocytes while a hypomethylated state was observed in sperm. Using both quantitative PCR and whole mount in situ hybridization, we were able to clearly demonstrate the maternal inheritance of the nanog transcript in goldfish. Corresponding mRNA levels subsequently decreased during early gastrulation. Together, our results reveal striking differences in expression and DNA methylation patterns in gametes and during early development and in upstream region features between teleosts and mammals that are consistent with the hypothesis of a rapid evolution of the Nanog gene in vertebrates, at least in some lineages.
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Affiliation(s)
- Lucie Marandel
- INRA, UR1037 SCRIBE, IFR140, Biogenouest, Campus de Beaulieu, F-35042 Rennes, France.
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