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Homo sapiens

ABSTRACT: UVB light mutagenesis in Xeroderma Pigmentosum C human cells

PROVIDER: PRJNA697944 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR13736100_1.fastq.gz	Fastqsanger.gz
	SRR13736100_2.fastq.gz	Fastqsanger.gz
	SRR13736101_1.fastq.gz	Fastqsanger.gz
	SRR13736101_2.fastq.gz	Fastqsanger.gz
	SRR13736102_1.fastq.gz	Fastqsanger.gz

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Homo sapiens

Project description:UVA light mutagenesis in xeroderma pigmentosum variant human cells

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Homo sapiens

Project description:An analysis fo genomic structural alterations in iPS cells derived from xeroderma pigmentosum patients

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Homo sapiens immortalized MSCs: 3A6

Project description:Gene expression profiling of immortalized human mesenchymal stem cells with hTERT/E6/E7 transfected MSCs. hTERT may change gene expression in MSCs. Goal was to determine the gene expressions of immortalized MSCs.

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An analysis fo genomic structural alterations in iPS cells derived from xeroderma pigmentosum patients

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Cxcl1 antagonist on UVB-induced skin inflammation leading to inhibitory effects on photo-skin tumorigensis in Xeroderma pigmentosum type A deficient mice

Project description:Xeroderma pigmentosum type A (XP-A) is a hereditary disease characterized by early onset of skin cancers development by ultraviolet (UV) exposure. Although etiology of susceptible to skin tumor of XP-A is well investigated as a repair deficiency by UV-induced DNA damage, the mechanism of unusual strong and prolonged skin inflammation caused by UV in XP-A and whether UV-induced inflammatory response relates to skin tumor-prone phenotype remains to be elucidated. Among up-regulated inflammatory response related genes in Xpa mice compared with wild-type by gene profiling study, Cxcl1 in Xpa mice was significantly different from wild-type and blood level of Cxcl1 was increased with UVB exposed on even small area of skin in Xpa mice. We administered Cxcl1 neutralizing antibody or antioxidant agent n-acetylcysteine for Xpa mice after UVB irradiation, showing that blood levels of Cxcl1, ear swelling and skin redness as an inflammatory response were significantly suppressed. Xpa mice with chronic UVB exposure and Cxcl1 neutralizing antibody or n-acetylcysteine administered Xpa mice yields much less skin tumors compared with control group. Those results indicate that highly inflammatory response of Xpa mice by UVB plays a role of skin tumor development that could be suppressed by chemokine as Cxcl1 through antioxidant mechanism.

2017-06-01 | GSE86093 | GEO

Homo sapiens MSCs: Normoxia vs. Hypoxia

Project description:Transcriptional profiling of human mesenchymal stem cells comparing normoxic MSCs cells with hypoxic MSCs cells. Hypoxia may inhibit senescence of MSCs during expansion. Goal was to determine the effects of hypoxia on global MSCs gene expression.

2011-02-19 | GSE20463 | GEO

Homo sapiens immortalized MSCs: KP vs. 3A6

Project description:Gene methylation profiling of immortalized human mesenchymal stem cells comparing HPV E6/E7-transfected MSCs cells with human telomerase reverse transcriptase (hTERT)- and HPV E6/E7-transfected MSCs. hTERT may increase gene methylation in MSCs. Goal was to determine the effects of different transfected genes on global gene methylation in MSCs.

2011-08-25 | GSE23936 | GEO

An analysis fo genomic structural alterations in iPS cells derived from xeroderma pigmentosum patients

Project description:To elucidate frequencies of genomic structural alterations, we performed an analysis using a SNP genotyping array (Illumina HumanCytoSNP-12 v2.1 DNA Analysis BeadChip Kit) for iPS cells derived from xeroderma pigmentosum patients (XP3OS, XP40OS, and XPEMB-1). Samples were collected after 10 to 25 passages to detect structural mutations occurred during the cell cultivation processes. Our results suggested a higher mutation rate of the iPS cells compared to those from normal cells. The iPS-cell samples were collected after several passages togerther with their precursor cell samples and subjected to the SNP genotyping array. We searched for structural mutations occurred during the culture of the iPS cells.

2015-06-24 | E-GEOD-55520 | biostudies-arrayexpress

Homo sapiens immortalized MSCs: 3A6

2010-09-25 | E-GEOD-24338 | biostudies-arrayexpress

Transcriptional Consequences of XPA Disruption in Human Cell Lines

Project description:Purpose: Nucleotide excision repair (NER) in mammalian cells requires the xeroderma pigmentosum group A protein (XPA) as a core factor. Remarkably, XPA and other NER proteins have been detected by chromatin immunoprecipitation at some active promoters, and NER deficiency is reported to influence the activated transcription of selected genes. However, the global influence of XPA on transcription in human cells has not been determined. Methods: We analyzed the human transcriptome by RNA sequencing (RNA-Seq). Four genetically matched human cell line pairs deficient or proficient in XPA were analyzed Results: Of the ~14,000 genes transcribed in each cell line, 325 genes (2%) had a significant XPA-dependent directional change in gene expression that was common to all four pairs (with a false discovery rate of 0.05). These genes were enriched in pathways for the maintenance of mitochondria. Only 27 genes were different by more than 1.5-fold. The most significant hits were AKR1C1 and AKR1C2, involved in steroid hormone metabolism. AKR1C2 protein was lower in all of the immortalized XPA-deficient cells. Retinoic acid treatment led to modest XPA-dependent activation of some genes with transcription-related functions. Conclusions: We conclude that XPA status does not globally influence human gene transcription. However, XPA significantly influences expression of a small subset of genes important for mitochondrial functions and steroid hormone metabolism. The results may help explain defects in neurological function and sterility in individuals with xeroderma pigmentosum.

2017-07-07 | GSE100855 | GEO

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