Ontology highlight
ABSTRACT:
PROVIDER: PRJNA793193 | ENA |
REPOSITORIES: ENA
Dataset's files
| Action | DRS | |||
|---|---|---|---|---|
| Other | ||||
| SRR17382763_1.fastq.gz | Fastqsanger.gz | |||
| SRR17382763_2.fastq.gz | Fastqsanger.gz | |||
| SRR17382764_1.fastq.gz | Fastqsanger.gz | |||
| SRR17382764_2.fastq.gz | Fastqsanger.gz |
Items per page: 5 1 - 5 of 64 |
Similar Datasets
Project description:Primary objectives: The primary objective is to investigate circulating tumor DNA (ctDNA) via deep sequencing for mutation detection and by whole genome sequencing for copy number analyses before start (baseline) with regorafenib and at defined time points during administration of regorafenib for treatment efficacy in colorectal cancer patients in terms of overall survival (OS).
Primary endpoints: circulating tumor DNA (ctDNA) via deep sequencing for mutation detection and by whole genome sequencing for copy number analyses before start (baseline) with regorafenib and at defined time points during administration of regorafenib for treatment efficacy in colorectal cancer patients in terms of overall survival (OS).
| 2533916 | ecrin-mdr-crc
Project description:Whole genome shotgun bisulfite sequencing, small RNA sequencing and transcriptome sequencing of wildtype Arabidopsis plants (Col-0), and met1, drm1 drm2 cmt3, and ros1 dml2 dml3 null mutants using the Illumina Genetic Analyzer. A comparison was performed with regions of the genome containing cytosine DNA methylation identified by methylcytosine immunoprecipitation and whole-genome oligonucleotide tiling microarrays, for wildtype Col-0. Understanding the epigenetic regulatory mechanisms that mediate control of transcription at multiple levels is critical to understanding how plants develop and respond to their environment. We combined next-generation sequencing by synthesis (SBS) technology with novel methods for direct sequencing of the entire cytosine methylome (methylC-seq), transcriptome (RNA-seq), and the small RNA component of the transcriptome (smRNA-seq) to create a set of highly integrated epigenome maps for Arabidopsis thaliana, in conjunction with a set of informative mutants defective in DNA methyltransferase and DNA demethylase activity. At single-base resolution we discovered extensive, previously undetected, DNA methylation, identified the context and level of methylation at each site, and found that local composition has effects upon DNA methylation state. Deep sequencing of the smRNAome exposed a direct relationship between the location and abundance of smRNAs and DNA methylation, perturbation of smRNA biogenesis upon loss of CpG DNA methylation, and a tendency for smRNAs to direct strand-specific DNA methylation in the region of RNA-DNA homology. Finally, strand-specific RNA-seq revealed changes in the transcript abundance of hundreds of genes upon alteration of the DNA methylation state, and enabled the identification of numerous previously unidentified genes regulated by DNA methylation. Keywords: Whole genome shotgun bisulfite sequencing, small RNA sequencing, transcriptome sequencing, methylcytosine immunoprecipitation, whole-genome oligonucleotide tiling microarrays Whole genome shotgun bisulfite sequencing, small RNA sequencing and transcriptome sequencing of wildtype Arabidopsis plants (Col-0), and met1, drm1 drm2 cmt3, and ros1 dml2 dml3 null mutants using the Illumina Genetic Analyzer. A comparison was performed with regions of the genome containing cytosine DNA methylation identified by methylcytosine immunoprecipitation and whole-genome oligonucleotide tiling microarrays, for wildtype Col-0.
2008-04-20 | E-GEOD-10877 | biostudies-arrayexpress
Project description:DNA methylation plays a critical role in development, particularly in repressing retrotransposons. The mammalian methylation landscape is dependent on the combined activities of the canonical maintenance enzyme Dnmt1 and the de novo Dnmts, 3a and 3b. Here we demonstrate that Dnmt1 displays de novo methylation activity in vitro and in vivo with specific retrotransposon targeting. We used whole-genome bisulfite and long-read Nanopore sequencing in genetically engineered methylation depleted embryonic stem cells to provide an in-depth assessment and quantification of this activity. Utilizing additional knockout lines and molecular characterization, we show that Dnmt1's de novo methylation activity depends on Uhrf1 and its genomic recruitment overlaps with targets that enrich for Trim28 and H3K9 trimethylation. Our data demonstrate that Dnmt1 can de novo add and maintain DNA methylation, especially at retrotransposons and that this mechanism may provide additional stability for long-term repression and epigenetic propagation throughout development.
2021-06-29 | PXD025736 | Pride
Project description:Epigenomics is developing a colon cancer screening assay based on differential methylation of specific CpG sites for the detection of early stage disease. A genome-wide methylation analysis and oligonucleotide array study using DNA from various stages of colon cancer and normal tissue have been completed to obtain candidate CpG markers. Based on results obtained in the above studies, Epigenomics has moved to the final stages of feasibility with a specific, highly sensitive real-time marker assay that is able to detect colon cancer DNA in blood plasma.
| 2056787 | ecrin-mdr-crc
Project description:Samples from fruit juice vesicle tissue from three lemon genotypes (Frost Lisbon, Faris "sour" and Faris "sweet") differing in fruit acidity were compared at two developmental timepoints (immature, mature). Faris lemon appears to be a graft chimera with the L2 layer derived from normal acid lemon and layer L1 from Millsweet limetta or a closely related genotype. Fruit of Faris sour and Faris sweet grew on different branches of the same tree, with sour fruit developing on branches with L1 and L2 from acid lemon. genotype: Faris sweet lemon - developmental stage: PO:0007009 FF.01 fruit size 30%,(3-replications); genotype: Faris sweet lemon - developmental stage: PO:0007050 FR.03 late stage of fruit ripening,(3-replications); genotype: Faris acid lemon - developmental stage: PO:0007009 FF.01 fruit size 30%,(3-replications); genotype: Faris acid lemon - developmental stage: PO:0007050 FR.03 late stage of fruit ripening,(3-replications); genotype: Frost Lisbon lemon - developmental stage: PO:0007009 FF.01 fruit size 30%,(3-replications); genotype: Frost Lisbon lemon - developmental stage: PO:0007050 FR.03 late stage of fruit ripening,(3-replications) PLEXdb (http://www.plexdb.org) has submitted this series at GEO on behalf of the original contributor, Mikeal L. Roose. The equivalent experiment is CT1 at PLEXdb.
2011-12-07 | E-GEOD-12804 | biostudies-arrayexpress
Project description:Samples from fruit juice vesicle tissue from three lemon genotypes (Frost Lisbon, Faris "sour" and Faris "sweet") differing in fruit acidity were compared at two developmental timepoints (immature, mature). Faris lemon appears to be a graft chimera with the L2 layer derived from normal acid lemon and layer L1 from Millsweet limetta or a closely related genotype. Fruit of Faris sour and Faris sweet grew on different branches of the same tree, with sour fruit developing on branches with L1 and L2 from acid lemon.
2011-12-07 | GSE12804 | GEO
Project description:Illumina-based whole genome bisulfite sequencing libraries for 4 RNA-directed DNA methylation mutants Examining DNA methylation levels in leaf tissue of RNA-directed DNA methylation mutants
2012-05-26 | E-GEOD-36143 | biostudies-arrayexpress
Project description:DNA methylation plays critical roles in gene regulation and cellular specification without altering DNA sequences. The wide application of reduced representation bisulfite sequencing (RRBS) and whole genome bisulfite sequencing (bis-seq) opens the door to study DNA methylation at single CpG site resolution. One challenging question is how best to test for significant methylation differences between groups of biological samples in order to minimize false positive findings. Current methods to analyze genome-wide bisulfite sequencing data use a smoothing approach or a simple statistical test based on the binomial distribution. Comparative DNA methylation profiling in AML blasts and normal CD34(+) control cells
2014-08-22 | E-GEOD-55569 | biostudies-arrayexpress
Project description:DNA methylation is a conserved epigenetic mark in plants and many animals. How parental alleles interact in progeny to influence the epigenome is poorly understood. We analyzed the DNA methylomes of Arabidopsis Col and C24 ecotypes, and their hybrid progeny. Hy- brids displayed nonadditive DNA methylation levels, termed meth- ylation interactions, throughout the genome. Approximately 2,500 methylation interactions occurred at regions where parental DNA methylation levels are similar, whereas almost 1,000 were at differ- entially methylated regions in parents. Methylation interactions were characterized by an abundance of 24-nt small interfering RNAs. Furthermore, dysfunction of the RNA-directed DNA methylation pathway abolished methylation interactions but did not affect the increased biomass observed in hybrid progeny. Methylation interac- tions correlated with altered genetic variation within the genome, suggesting that they may play a role in genome evolution. Whole genome bisulfite sequencing and small RNA sequencing of the wild type and nrpd1nrpe1 double mutant background of parent Col ,C24, the hybrid ColXC24 and C24XCol to explore the role of the RdDM pathway in DNA methylation interactions.
2016-06-15 | E-GEOD-72993 | biostudies-arrayexpress
Project description:Estrogen receptor beta (ERβ) is a ligand inducible transcription factor regulating gene expression in response to the female sex hormone estrogen. Previously, we found that ERβ deficiency results in changes in DNA methylation patterns at two gene promoters, implicating an involvement of ERβ in DNA methylation. In this study, we set out to explore this involvement on a genome-wide level, and to investigate the underlying mechanisms of this function. Using reduced representation bisulfite sequencing (RRBS), we compared genome-wide DNA methylation in mouse embryonic fibroblasts (MEFs) derived from wildtype (wt) and ERβ knock-out (βerko) mice, and identified around 8000 differentially methylated positions (DMPs). This suggests that ERβ is involved in regulating DNA methylation at specific sites in the genome. Genome-wide DNA methylation was analysed in MEFs derived from wildtype and ERbeta null mice by educed representation bisulfite sequencing (RRBS) on an Illumina Genome Analyser IIx platform.
2016-02-22 | E-GEOD-72230 | biostudies-arrayexpress