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Human Papillomavirus strain:HPV16

ABSTRACT: Human Papillomavirus strain:HPV16 Genome sequencing

PROVIDER: PRJNA240947 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR1186010.fastq.gz	Fastqsanger.gz
	SRR1186011.fastq.gz	Fastqsanger.gz
	SRR1186012.fastq.gz	Fastqsanger.gz
	SRR1186013.fastq.gz	Fastqsanger.gz
	SRR1186014.fastq.gz	Fastqsanger.gz

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Human Papillomavirus (HPV) genomic integration, expression and E6/E7 splicing patterns in cervical cancer associated with HPV16 or HPV18 infection

Project description:Human papillomavirus (HPV) genome integration into the host genome, blocking E2 expression and leading to overexpression of E6 and E7 viral oncogenes, is considered a major step in cervical cancer development. In high-risk HPVs, E6 and E7 oncogenes are expressed as a bicistronic pre-mRNA, with alternative splicing producing the ultimate mRNAs required for E6 and E7 translation. Given the number of alternative donor and acceptor splicing sites, ten E6/E7 different alternative transcripts might be formed for HPV16 and three for HPV18, although only six isoforms have been previously reported for HPV16. In the present work, we employ high-throughput sequencing of invasive cervical cancer transcriptome (RNA-Seq) to characterize the expression of the HPV genome in 24 invasive cervical cancers associated with HPV16 and HPV18 single infections. Based on high-resolution transcriptional maps, we herein report three viral gene expression patterns which might be associated with the presence of the viral genome in episomal and/or integrated stages. Alternative mRNAs splicing isoforms coding for E6 and E7 oncoproteins were characterized and quantified, and two novel isoforms were identified. Three major isoforms (E6*I, E6*II, and E6+E7) were detected for HPV16 and two for HPV18 (E6*I and E6+E7). Minor transcript isoforms, including the novel ones, were very rare in some tumor samples or were not detected. Our data suggested that minor transcript isoforms of E6/E7 do not play a relevant role in cervical cancer.

2019-08-06 | GSE91065 | GEO

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Project description:To investigate the extent of gene expression dysregulation by the human papillomavirus (HPV) oncoprotein E7, we performed global gene expression analysis on normal immortalized keratinocytes from skin (NIKS), NIKS cells maintaining the HPV16 or 18 episomes (NIKS-16, NIKS-18, respectively), and NIKS cells maintaining the HPV-16 episome deficient in E7 expression (NIKS-16ΔE7).

2017-06-11 | GSE83259 | GEO

High-risk human papillomavirus E7 affects host keratinocyte DNA methylation

Project description:To investigate the extent of host methylome dysregulation by the human papillomavirus (HPV) oncoprotein E7, we performed methylome array analysis on normal immortalized keratinocytes from skin (NIKS), NIKS cells maintaining the HPV16 or 18 episomes (NIKS-16, NIKS-18, respectively), and NIKS cells maintaining the HPV-16 episome deficient in E7 expression (NIKS-16ΔE7).

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Human HPV16 positive CaSki cells: Control vs. virus oncogene e6/e7 silenced

Project description:The infection with high-risk human papillomavirus is aetiologically linked to cervical cancer, the role of miRNAs regulated by virus oncogene in cancer progression remain largely unknown. Here, we screened the differentially expressed miRNAs with miRNA array between virus oncogene e6/e7 silenced and not in HPV16-positive cervical cancer cell lines

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Differentiation resistant HPV16-immortalized keratinocytes: Six1 transfected vs. Control.

Project description:The overexpression of Six1, a member of the Six family of homeodomain transcription factors, has been found in various human cancers, and is associated with tumor progression and metastasis. We previously determined that the expression of Six1 mRNA increased during in vitro progression of human papillomavirus type 16 (HPV16)-immortalized human keratinocytes (HKc/HPV16) toward a differentiation-resistant (HKc/DR) phenotype. However, if Six1 promotes HPV16-mediated transformation or not remains unknown. HKc/DR were transfected with a Six1 or control vector and RNA isolated from these cells were used in an Agilent two-color gene expression profiling experiment. The goal was to determine the effects of Six1 on global gene expression.

2013-12-24 | GSE53589 | GEO

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