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DNA methylation and gene expression changes in mice induced by parabiosis and recovery

ABSTRACT: DNA methylation and gene expression changes in mice induced by parabiosis and recovery

PROVIDER: PRJNA931263 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR23332105_1.fastq.gz	Fastqsanger.gz
	SRR23332105_2.fastq.gz	Fastqsanger.gz
	SRR23332106_1.fastq.gz	Fastqsanger.gz
	SRR23332106_2.fastq.gz	Fastqsanger.gz
	SRR23332107_1.fastq.gz	Fastqsanger.gz

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Project description:This SuperSeries is composed of the SubSeries listed below.

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UVB irradiation does not directly induce detectable changes of DNA methylation in human keratinocytes

Project description:Unprotected exposure to UVB radiation from the sun and the resulting DNA damage are thought to be responsible for physiological changes in the skin and for a variety of skin cancers, including basal cell and squamous cell carcinoma and malignant melanoma. Although the mutagenic effects of UVB have been well documented and studied mechanistically, there is only limited information as to whether UV light may also be responsible for inducing epigenetic changes in the genome of exposed cells. DNA methylation is a stable epigenetic modification involved in gene control. To study the effects of UVB radiation on DNA methylation, we repeatedly exposed normal human keratinocytes to a UVB light source. After a recovery period, we analyzed global DNA methylation patterns in the irradiated and control cells using the methylated-CpG island recovery assay (MIRA) method in combination with high-resolution microarrays. Bioinformatics analysis revealed only a limited number of possible differences between UVB-exposed and control cells. However, these minor apparent changes could not be independently confirmed by bisulfite sequencing-based approaches. This study reveals that UVB irradiation of keratinocytes has no recognizable global effect on DNA methylation patterns and suggests that changes in DNA methylation, as observed in skin cancers, are not immediate consequences of human exposure to solar UVB irradiation. DNA methylation analysis of control and UVB irradiated keratinocytes. The MIRA assay was used for enrichment of methylated DNA. NimbleGen CpG island plus promoter arrats were used.

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