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| Registros recuperados: 27 | |
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| De Carvalho Augusto, Ronaldo; Rey, Oliver; Cosseau, Céline; Chaparro, Cristian; Vidal-dupiol, Jeremie; Allienne, Jean-françois; Duval, David; Pinaud, Silvain; Tönges, Sina; Andriantsoa, Ranja; Luquet, Emilien; Aubret, Fabien; Dia Sow, Mamadou; David, Patrice; Thomson, Vicki; Joly, Dominique; Gomes Lima, Mariana; Federico, Déborah; Danchin, Etienne; Minoda, Aki; Grunau, Christoph. |
| We describe here a protocol for the generation of sequence-ready libraries for population epigenomics studies, and the analysis of alignment results. We show that the protocol can be used to monitor chromatin structure changes in populations when exposed to environmental cues. The protocol is a streamlined version of the Assay for transposase accessible chromatin with high-throughput sequencing (ATAC-seq) that provides a positive display of accessible, presumably euchromatic regions. The protocol is straightforward and can be used with small individuals such as daphnia and schistosome worms, and probably many other biological samples of comparable size (~10,000 cells), and it requires little molecular biology handling expertise. |
| Tipo: Text |
Palavras-chave: Epigenetics; Epigenomics; ATAC-seq; Daphnia pulex; Schistosoma mansoni. |
| Ano: 2020 |
URL: https://archimer.ifremer.fr/doc/00681/79353/81859.pdf |
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| Bressan,Fabiana Fernandes; Fantinato-Neto,Paulo; Andrade,Gabriella Mamede; Sangalli,Juliano Rodrigues; Sampaio,Rafael Vilar; Silveira,Juliano Coelho da; Perecin,Felipe; Meirelles,Flávio Vieira. |
| This review aim to present some clinical problems found in IVP-derived animals focusing on NT procedures and to discuss the possible role of epigenetics in such process. Also, as cell-secreted vesicles have been reported as possible regulators of important physiological reproductive processes such as folliculogenesis and fertilization, it is also presented herein a new perspective of manipulating the pre-implantation period trough effector molecules contained in such vesicles. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Embryo development; Nuclear transfer; Epigenetics; Extra-cellular vesicles.. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782015001001879 |
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| Sui,W.G.; He,H.Y.; Yan,Q.; Chen,J.J.; Zhang,R.H.; Dai,Y.. |
| Membranous nephropathy (MN), characterized by the presence of diffuse thickening of the glomerular basement membrane and subepithelial in situimmune complex disposition, is the most common cause of idiopathic nephrotic syndrome in adults, with an incidence of 5-10 per million per year. A number of studies have confirmed the relevance of several experimental insights to the pathogenesis of human MN, but the specific biomarkers of MN have not been fully elucidated. As a result, our knowledge of the alterations in histone methylation in MN is unclear. We used chromatin immunoprecipitation followed by high-throughput sequencing (ChIP-seq) to analyze the variations in a methylated histone (H3K9me3) in peripheral blood mononuclear cells from 10 MN patients and... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: ChIP-seq; Epigenetics; H3K9me3; Membranous nephropathy. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2014000100042 |
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| Cheray, Mathilde; Etcheverry, Amandine; Jacques, Camille; Pacaud, Romain; Bougras-cartron, Gwenola; Aubry, Marc; Denoual, Florent; Peterlongo, Pierre; Nadaradjane, Arulraj; Briand, Josephine; Akcha, Farida; Heymann, Dominique; Vallette, François M.; Mosser, Jean; Ory, Benjamin; Cartron, Pierre-françois. |
| Background Literature reports that mature microRNA (miRNA) can be methylated at adenosine, guanosine and cytosine. However, the molecular mechanisms involved in cytosine methylation of miRNAs have not yet been fully elucidated. Here we investigated the biological role and underlying mechanism of cytosine methylation in miRNAs in glioblastoma multiforme (GBM). Methods RNA immunoprecipitation with the anti-5methylcytosine (5mC) antibody followed by Array, ELISA, dot blot, incorporation of a radio-labelled methyl group in miRNA, and miRNA bisulfite sequencing were perfomred to detect the cytosine methylation in mature miRNA. Cross-Linking immunoprecipiation qPCR, transfection with methylation/unmethylated mimic miRNA, luciferase promoter reporter plasmid,... |
| Tipo: Text |
Palavras-chave: MiRNA; Cytosine-methylation; Epigenetics; DNMT3A; AGO4; Glioblastoma; Epitranscriptomics. |
| Ano: 2020 |
URL: https://archimer.ifremer.fr/doc/00610/72196/70980.pdf |
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| Rodrigues,Maria Gabriela Fontanetti; Soares,Murilo Racy; Gimenez,Daniele Fernanda Jovino; Fonseca,Larissa Fernanda Simielli; Torrieri,Erico; Ramos,Ester Silveira; Giuliatti,Silvana. |
| ABSTRACT Fig tree (Ficus carica L.) breeding programs using conventional methods, such as directed crosses, to obtain new cultivars, are unworkable in many countries, including Brazil. Consequently, genetic breeding through mutagenesis has emerged as an important line of research that can improve this crop, and be a significant source of information about this species and assist in the implementation of propagation projects and appropriate management. The aim of this study was to verify the existence of epigenetic variability attributable to DNA methylation in irradiated fig selections when compared both to each other and to the main commercial cultivar, “Roxo-de-Valinhos”, which had previously used methylation-sensitive amplified polymorphism (MSAP) and... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Ficus carica; DMRs; Methylation; Plant breeding; Epigenetics. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162017000400285 |
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| Dugé De Bernonville, Thomas; Maury, Stéphane; Delaunay, Alain; Daviaud, Christian; Chaparro, Cristian; Tost, Jörg; O’connor, Sarah Ellen; Courdavault, Vincent. |
| Catharanthus roseus produces a wide spectrum of monoterpene indole alkaloids (MIAs). MIA biosynthesis requires a tightly coordinated pathway involving more than 30 enzymatic steps that are spatio-temporally and environmentally regulated so that some MIAs specifically accumulate in restricted plant parts. The first regulatory layer involves a complex network of transcription factors from the basic Helix Loop Helix (bHLH) or AP2 families. In the present manuscript, we investigated whether an additional epigenetic layer could control the organ-, developmental- and environmental-specificity of MIA accumulation. We used Whole-Genome Bisulfite Sequencing (WGBS) together with RNA-seq to identify differentially methylated and expressed genes among nine samples... |
| Tipo: Text |
Palavras-chave: Alkaloids; DNA methylation; Epigenetics; Folivory; Organs; Plant specialized metabolism. |
| Ano: 2020 |
URL: https://archimer.ifremer.fr/doc/00652/76453/77543.pdf |
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| Andrade,F.O.; Nagamine,M.K.; Conti,A. De; Chaible,L.M.; Fontelles,C.C.; Jordão Junior,A.A.; Vannucchi,H.; Dagli,M.L.Z.; Bassoli,B.K.; Moreno,F.S.; Ong,T.P.. |
| The combined treatment with histone deacetylase inhibitors (HDACi) and retinoids has been suggested as a potential epigenetic strategy for the control of cancer. In the present study, we investigated the effects of treatment with butyrate, a dietary HDACi, combined with vitamin A on MCF-7 human breast cancer cells. Cell proliferation was evaluated by the crystal violet staining method. MCF-7 cells were plated at 5 x 10(4) cells/mL and treated with butyrate (1 mM) alone or combined with vitamin A (10 µM) for 24 to 120 h. Cell proliferation inhibition was 34, 10 and 46% following treatment with butyrate, vitamin A and their combination, respectively, suggesting that vitamin A potentiated the inhibitory activities of butyrate. Furthermore, exposure to this... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Breast cancer; MCF-7 cells; Butyric acid; Vitamin A; Epigenetics. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2012000900008 |
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| Anselmo,Nilson Praia; Bello,Maria Josefa; Gonzalez-Gomez,Pilar; Dias,Luis Antonio Araújo; Almeida,José Reinaldo Walter de; Santos,Marcelo José dos; Rey,Juan A.; Casartelli,Cacilda. |
| Aberrant methylation of CpG islands located in promoter regions represents one of the major mechanisms for silencing cancer-related genes in tumor cells. We determined the frequency of aberrant CpG island methylation for several tumor-associated genes: DAPK, MGMT, p14ARF, p16INK4a, TP73, RB1 and TIMP-3 in 55 brain tumors, consisting of 26 neuroepithelial tumors, 6 peripheral nerve tumors, 13 meningeal tumors and 10 metastatic brain tumors. Aberrant methylation of at least one of the seven genes studied was detected in 83.6% of the cases. The frequencies of aberrant methylation were: 40% for p14ARF, 38.2% for MGMT, 30.9% for, p16INK4a, 14.6% for TP73 and for TIMP-3, 12.7% for DAPK and 1.8% for RB1. These data suggest that the hypermethylation observed in... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Brain tumors; Epigenetics; Methylation. |
| Ano: 2006 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572006000300001 |
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| Fneich, Sara; Theron, Andre; Cosseau, Celine; Rognon, Anne; Aliaga, Benoit; Buard, Jerome; Duval, David; Arancibia, Nathalie; Boissier, Jerome; Roquis, David; Mitta, Guillaume; Grunau, Christoph. |
| Background: Adaptive evolution is not possible without the generation of phenotypic variants. The origin of these variations has been a central topic in evolutionary biology. Up to now, it was commonly accepted that standing genetic variation is the only cause of phenotypic variants. However, epigenetic information is emerging as a complementary source of heritable phenotypic variation that contributes to evolution. The relative importance of genetics and epigenetics in generating heritable phenotypic variation is nevertheless a matter of debate. Results: We used a host-parasite system to address this question. The human blood fluke Schistosoma mansoni can adapt rapidly to new intermediate snail hosts. The interaction between parasite and mollusk is... |
| Tipo: Text |
Palavras-chave: Epigenetics; Adaptive evolution; Compatibility polymorphism; Schistosoma mansoni. |
| Ano: 2016 |
URL: https://archimer.ifremer.fr/doc/00615/72708/71730.pdf |
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| Danchin, Etienne; Pocheville, Arnaud; Rey, Olivier; Pujol, Benoit; Blanchet, Simon. |
| After decades of debate about the existence of non-genetic inheritance, the focus is now slowly shifting towards dissecting its underlying mechanisms. Here, we propose a new mechanism that, by integrating non-genetic and genetic inheritance, may help build the long-sought inclusive vision of evolution. After briefly reviewing the wealth of evidence documenting the existence and ubiquity of non-genetic inheritance in a table, we review the categories of mechanisms of parent-offspring resemblance that underlie inheritance. We then review several lines of argument for the existence of interactions between non-genetic and genetic components of inheritance, leading to a discussion of the contrasting timescales of action of non-genetic and genetic inheritance.... |
| Tipo: Text |
Palavras-chave: Non-genetic inheritance; Inclusive heritability; Epigenetics; Central dogma; Genetic assimilation; Mutation randomness; Inclusive evolutionary synthesis. |
| Ano: 2019 |
URL: https://archimer.ifremer.fr/doc/00479/59037/62430.pdf |
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| Pittman, Karin; Yufera, Manuel; Pavlidis, Michail; Geffen, Audrey J.; Koven, Willian; Ribeiro, Laura; Zambonino, Jose Luiz; Tandler, Amos. |
| Teleost fish are more diverse than any other vertebrate group, and yet only a limited number of species are fished and farmed globally. Efforts to expand the quantity and diversity of fish produced are hampered by the extreme diversity of ontogenetic responses of fish, especially during larval development. This review looks at advances in molecular phylogeny, endocrine and nutrient influences and long-term studies of the phenotypes of commercially important fish to put the sources and consequences of this plasticity into context. This nested context of evolutionary forces of the fish-specific genome duplication, epigenetic influences, ontogenetically conserved processes like metamorphosis and cell determination is further presented in relation to how fish... |
| Tipo: Text |
Palavras-chave: Development; Epigenetics; Fish-specific genome duplication; Juveniles; Larvae; Metamorphosis; Plasticity. |
| Ano: 2013 |
URL: http://archimer.ifremer.fr/doc/00144/25509/23655.pdf |
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| Ventura-Juncá,Patricio; Irarrázaval,Isabel; Rolle,Augusto J; Gutiérrez,Juan I; Moreno,Ricardo D; Santos,Manuel J. |
| The advent of in vitro fertilization (IVF) in animals and humans implies an extraordinary change in the environment where the beginning of a new organism takes place. In mammals fertilization occurs in the maternal oviduct, where there are unique conditions for guaranteeing the encounter of the gametes and the first stages of development of the embryo and thus its future. During this period a major epigenetic reprogramming takes place that is crucial for the normal fate of the embryo. This epigenetic reprogramming is very vulnerable to changes in environmental conditions such as the ones implied in IVF, including in vitro culture, nutrition, light, temperature, oxygen tension, embryo-maternal signaling, and the general absence of protection against foreign... |
| Tipo: Journal article |
Palavras-chave: In vitro fertilization (IVF) in mammals; Epigenetics; Developmental alterations; Bioethical implications. |
| Ano: 2015 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602015000100068 |
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| Barros,M.A.V.; Andrade,E.B.; Barros,R.G.N.; Costa,I.K.M.; Costa,I.C.L.; Vitorino,G.F.A.; Andrade,J.J.C.; Paulino-Silva,K.M.; Nogueira,V.O.; de Brito Alves,J.L.; Costa-Silva,J.H.. |
| The aim of this study was to investigate the reproductive, biochemical, and hematological outcomes of pregnant rats exposed to protein restriction. Wistar rat dams were fed a control normal-protein (NP, 17% protein, n=8) or a low-protein (LP, 8% protein, n=14) diet from the 1st to the 20th day of pregnancy. On the 20th day, the clinical signs of toxicity were evaluated. The pregnant rats were then anesthetized and blood samples were collected for biochemical-hematological analyses, and laparotomy was performed to evaluate reproductive parameters. No sign of toxicity, or differences (P>0.05) in body weight gain and biochemical parameters (urea, creatinine, albumin, globulin, and total protein) between NP and LP pregnant dams were observed. Similarly,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Development; Epigenetics; Fertility; Gestation; Intrauterine growth; Nutrition. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2018000600613 |
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| Bulla, Ingo; Aliaga, Benoit; Lacal, Virginia; Bulla, Jan; Grunau, Christoph; Chaparro, Cristian. |
| Background: DNA methylation patterns store epigenetic information in the vast majority of eukaryotic species. The relatively high costs and technical challenges associated with the detection of DNA methylation however have created a bias in the number of methylation studies towards model organisms. Consequently, it remains challenging to infer kingdom-wide general rules about the functions and evolutionary conservation of DNA methylation. Methylated cytosine is often found in specific CpN dinucleotides, and the frequency distributions of, for instance, CpG observed/expected (CpG o/e) ratios have been used to infer DNA methylation types based on higher mutability of methylated CpG. Results: Predominantly model-based approaches essentially founded on... |
| Tipo: Text |
Palavras-chave: Epigenetics; DNA methylation; Kernel density estimation; CpG o/e ratio; CpN o/e ratio. |
| Ano: 2018 |
URL: https://archimer.ifremer.fr/doc/00437/54816/71790.pdf |
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| Registros recuperados: 27 | |
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