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DNA methylation instability by BRAF-mediated TET silencing and lifestyle-exposure divides colon cancer pathways [BrafV637E knock-in ]

ABSTRACT: DNA methylation instability by BRAF-mediated TET silencing and lifestyle-exposure divides colon cancer pathways [BrafV637E knock-in ]

PROVIDER: PRJNA427811 | ENA |

REPOSITORIES: ENA

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DNA methylation instability by BRAF-mediated TET silencing and lifestyle-exposure divides colon cancer pathways

Project description:DNA methylation instability by BRAF-mediated TET silencing and lifestyle-exposure divides colon cancer pathways

| PRJNA385362 | ENA

DNA methylation instability by BRAF-mediated TET silencing and lifestyle-exposure divides colon cancer pathways [Colo320 cell line]

Project description:DNA methylation instability by BRAF-mediated TET silencing and lifestyle-exposure divides colon cancer pathways [Colo320 cell line]

| PRJNA514303 | ENA

DNA methylation instability by BRAF-mediated TET silencing and lifestyle-exposure divides colon cancer pathways [BrafV637E knock-in ]

Project description:Promoter hypermethylation divides colon cancers into subtypes with and without a CpG island methylator phenotype (CIMP). Here, we performed genome-wide DNA methylation profiling of colonic normal and tumor tissues to dissect development of CpG hypermethylation in colon carcinogenesis. This identified age-environment related versus genetically driven CpG hypermethylation, the latter being associated with CIMP cancers. We found a strong association between BRAFV600E mutation and downregulation of the DNA demethylases TET1 and TET2. Expression of BRAFV600E in CIMP cancer cells suppressed TET1 transcription, which was sufficient to establish hypermethylation at CIMP genes promoters, including that of TET2. This phenotype was reverted by the BRAFV600E inhibitor vemurafenib. Thus, BRAFV600E, via impairment of cytosine de-methylation, is a genetic driver of CIMP in colon tumorigenesis.

2019-12-18 | GSE108606 | GEO

DNA methylation instability by BRAF-mediated TET silencing and lifestyle-exposure divides colon cancer pathways [Colo320 cell line]

2019-12-18 | GSE124915 | GEO

DNA methylation instability by BRAF-mediated TET silencing and lifestyle-exposure divides colon cancer pathways [Caco2 cell line]

2019-12-18 | GSE98533 | GEO

DNA methylation instability by BRAF-mediated TET silencing and lifestyle-exposure divides colon cancer pathways [3 cell lines]

2019-12-18 | GSE98532 | GEO

DNA methylation instability by BRAF-mediated TET silencing and lifestyle-exposure divides colon cancer pathways [tumor, paired normal]

2019-12-18 | GSE98531 | GEO

Homo sapiens

Project description:DNA methylation instability by BRAF-mediated TET silencing and lifestyle-exposure divides colon cancer pathways [3 cell lines]

| PRJNA385365 | ENA

Homo sapiens

Project description:DNA methylation instability by BRAF-mediated TET silencing and lifestyle-exposure divides colon cancer pathways [tumor, paired normal]

| PRJNA385367 | ENA

Homo sapiens

Project description:DNA methylation instability by BRAF-mediated TET silencing and lifestyle-exposure divides colon cancer pathways [Caco2 cell line]

| PRJNA385366 | ENA

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