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Long non-coding RNA FAM83H-AS1 is regulated by human papillomavirus 16 E6 independently of p53 in cervical cancer cells

ABSTRACT: Long non-coding RNA FAM83H-AS1 is regulated by human papillomavirus 16 E6 independently of p53 in cervical cancer cells

PROVIDER: PRJNA474602 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR7262883_1.fastq.gz	Fastqsanger.gz
	SRR7262883_2.fastq.gz	Fastqsanger.gz
	SRR7262884_1.fastq.gz	Fastqsanger.gz
	SRR7262884_2.fastq.gz	Fastqsanger.gz
	SRR7262885_1.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

Long non-coding RNA FAM83H-AS1 is regulated by human papillomavirus 16 E6 independently of p53 in cervical cancer cells

Project description:Global long non-coding RNA (lncRNA) expression profile in primary human keratinocytes post-expression of high-risk HPV-16 E6 oncoprotein Purpose: The goal of this study is to utlize high-throughput RNA sequencing (RNA-seq) to identify differentially expressed host lncRNAs with the presence of the high-risk HPV-16 E6 oncoprotein in primary human foreskin keratinocytes. Methods: Primary human foreskin keratinocytes (HEKa) stably expressing HPV-16 E6 compared to GFP control were analyzed, in triplicates, by RNA-seq (Illumina). qRT-PCR validation was performed using SYBR Green assays. Results: 151 up- and 100 down-regulated host lncRNAs were altered greater than 1.5-fold change in HEKa expressing HPV-16 E6 compared to GFP control cells. Altered expression of 16 genes (8 up- and 8 down-regulated) were confirmed by qRT-PCR, demonstrating the high-degree of sensitivity of the RNA-seq method. Conclusions: Our study represents the first global screening of host lncRNAs altered specifically by HPV-16 E6 oncoprotein expression.

2018-10-31 | GSE115334 | GEO

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 In the study, we screened the differentially expressed miRNAs with miRNA array (Exiqon, miRCURY LNA microRNA array, 7th gen [hsa, miRBase 18]) between virus oncogene e6/e7 silenced and not in HPV16-positive cervical cancer cell lines to found miRNAs regulated by virus oncogene e6/e7. Biological replicates: 3 control, 3 e6/e7 silenced, independently grown and harvested. four replicates per array.

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Gene expression analysis of laser-captured epithelium and stroma from FVB mice and HPV16 E6/E7 transgenic mice under estrogen or control treatment regimens.

Project description:Affymetrix Mouse Genome 430 2.0 arrays were used to measure genome-wide gene expression levels. The results show that high-risk human papillomavirus oncogenes E6 and E7 reprogram the cervical cancer microenvironment independently of and synergistically with estrogen, a critical co-factor in cervical cancer development and maintenance. Several potential estrogen-induced paracrine-acting factors were identified in the expression profile of the cervical tumor microenvironment. The microenvironment of estrogen-treated HPV-transgenic mice was significantly enriched for chemokine/cytokine activity and inflammatory and immune functions associated with carcinogenesis.

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

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Differentially expressed gene profiles according to physical status of human papillomavirus integration in cervical cancer

Project description:Integration of human papillomavirus (HPV) DNA into the host genome is a critical aetiological event in the progression from normal cervix to intraepithelial neoplasm, and finally to invasive cervical cancer. In this study, we want to know how HPV DNA physical status relates to treatment outcome for cervical carcinomas.

2013-07-28 | GSE49288 | GEO

Expression signatures and cytogenetic aberrations in HPV16 E6, E7 and E6/E7-positive immortalized human epithelial cells

Project description:Identification of genetic/cytogenetic alterations and differentially expressed cellular genes in HPV16 E6, E7 and E6/E7 positive human foreskin keratinocytes Keywords: ordered We used microarrays to identify differentially expressed genes in human foreskin keratinocytes (HFK) transfected with retroviral vectors harboring the human papillomavirus type 16 oncogenes E6, E7, or E6/E7 in comparison to HFK containing the empty vector control pLXSN.

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