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Ena-DATASET-NKI-23-04-2018-10:07:02:770-610 - samples

ABSTRACT: The dataset "Low-coverage Whole Genome Sequencing, colorectal adenomas NKI-AvL TGO series NGS-ProToCol" includes 30 fastq files from single-end low-coverage WGS on Illumina HiSeq2500 for 30 snap-frozen colorectal adenomas.

PROVIDER: EGAD00001004092 | EGA |

REPOSITORIES: EGA

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ena-DATASET-NKI-23-04-2018-10:09:10:344-611 - samples

Project description:The dataset "Low-coverage Whole Genome Sequencing, colorectal carcinomas NKI-AvL TGO series NGS-ProToCol" includes 30 fastq files from single-end low-coverage WGS on Illumina HiSeq2500 for 30 snap-frozen colorectal carcinomas.

| EGAD00001004093 | EGA

ena-DATASET-NKI-26-03-2018-09:02:35:245-872 - samples

Project description:The dataset "RNA-seq colorectal adenomas NKI-AvL TGO series NGS-ProToCol" includes 2 x 30 fastq files from paired-end total RNA sequencing on Illumina HiSeq2500 for 30 snap-frozen colorectal adenomas.

| EGAD00001004055 | EGA

ena-DATASET-NKI-26-03-2018-09:37:16:082-880 - samples

Project description:The dataset "RNA-seq colorectal adenomas NKI-AvL TGO series Gut2009" includes 2 x 32 fastq files from paired-end mRNA sequencing on Illumina HiSeq2500 for 32 snap-frozen colorectal adenomas.

| EGAD00001004058 | EGA

ena-DATASET-NKI-26-03-2018-09:08:00:582-873 - samples

Project description:The dataset "RNA-seq colorectal carcinomas NKI-AvL TGO series NGS-ProToCol" includes 2 x 30 fastq files from paired-end total RNA sequencing on Illumina HiSeq2500 for 30 snap-frozen colorectal carcinomas.

| EGAD00001004056 | EGA

ena-DATASET-NKI-23-04-2018-10:11:07:220-612 - samples

Project description:The dataset "Low-coverage Whole Genome Sequencing, normal adjacent colon NKI-AvL TGO series NGS-ProToCol" includes 18 fastq files from single-end low-coverage WGS on Illumina HiSeq2500 for 18 snap-frozen normal adjacent colon tissues.

| EGAD00001004094 | EGA

ena-DATASET-NKI-26-03-2018-09:39:04:040-881 - samples

Project description:The dataset "RNA-seq colorectal carcinomas NKI-AvL TGO series Gut2009 " includes 2 x 29 fastq files from paired-end mRNA sequencing on Illumina HiSeq2500 for 29 snap-frozen colorectal carcinomas.

| EGAD00001004059 | EGA

ena-DATASET-NKI-26-03-2018-09:10:07:272-877 - samples

Project description:The dataset "RNA-seq normal adjacent colon NKI-AvL TGO series NGS-ProToCol" includes 2 x 18 fastq files from paired-end total RNA sequencing on Illumina HiSeq2500 for 18 snap-frozen normal adjacent colon tissues.

| EGAD00001004057 | EGA

Molecular characterization of colorectal adenomas reveals POFUT1 as a candidate driver of tumor progression

Project description:Colorectal adenomas are benign precursor lesions of colorectal cancer (CRC) that arise from normal epithelium1. The prevalence of adenomas in the large intestine is much higher than the incidence of cancer implying that the majority of adenomas will never progress to CRC4. In clinical practice, adenomas detected during colonoscopy are completely removed, and consequently the natural history of disease disrupted. Based on the prevalence of focal cancer in endoscopically removed adenomas, it is estimated that only 5% of adenomas will eventually progress to CRC. The aim of the present study was to characterize adenomas at low and high risk of progressing to cancer by extensive molecular profiling at DNA, RNA, and protein level, allowing to examine the biological processes in which they differ and to discover putative drivers of early colorectal tumor development.

2019-08-22 | PXD012254 | Pride

Non-CpG island promoter hypomethylation and miR-149 regulate the expression of SRPX2 in colorectal cancer

Project description:We used Illumina Infinium 27k Human DNA Methylation BeadChip v1.2 to assess genome-wide DNA methylation profiling of normal colon epithelial, adenomas and colorectal adenocarcinomas across approximately 27,000 CpGs in fresh frozen colorectal tissue samples. We found that cancer-associated methylation changes with impact on transcription occur nearly as frequent at non-CpG island as CpG island promoters in colorectal cancer (CRC). Samples included 6 normal colon epithelial tissue samples, 6 adenomas, and 30 colorectal adenocarcinomas. Bisulfite-converted DNA from the 42 samples were hybridised to the Illumina Infinium 27k Human Methylation Beadchip v1.2.

2013-06-15 | E-GEOD-40055 | biostudies-arrayexpress

Global DNA methylation alterations reveal multiple pathways in the initiation and progression of colorectal cancer

Project description:Genetic and epigenetic alterations are a fundamental aspect of colorectal cancer formation. There is considerable heterogeneity between colorectal cancers regarding the mutations and methylated genes they carry, and this heterogeneity may arise early in the polyp-cancer sequence. However, our understanding of the epigenetic alterations and gene mutations in colon adenomas and their relation to colorectal cancer is incomplete. Thus, we have assessed the methylome in normal colon mucosa, tubular adenomas, and colorectal adenocarcinomas and have determined the relationship of these findings between adenomas and cancer in the colon. Genome-wide alterations in DNA methylation were found in the normal colon mucosa adjacent to colorectal cancer, tubular adenomas, and colorectal cancer. Three subgroups of CRCs and two subgroups of adenomas were identified on the basis of their DNA methylation patterns. The adenomas separated into a high-frequency methylation class (Adenoma-H) and a low-frequency methylation class. The adenoma-H polyps have a methylated DNA signature similar to non-CIMP CRCs, whereas those of the Adenoma-L class have a similar methylation pattern to normal colon mucosa. The CpGs that account for these signatures are located in intragenic/intergenic regions, which suggests that these two groups of adenomas arise from different stem cell populations.

2014-09-08 | GSE48684 | GEO

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