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Analysis of the gene expression profile in normal human epidermal keratinocytes and cutaneous squamous cell carcinoma cell lines

ABSTRACT: The incidence of keratinocyte-derived skin cancer, cutaneous squamous cell carcinoma (cSCC) is increasing worldwide making it the second most common metastatic skin cancer. We used microarrays to characterize gene expression profile in normal human epidermal keratinocytes (NHEK) and cSCC cell lines.

ORGANISM(S): Homo sapiens

PROVIDER: GSE66359 | GEO | 2015/08/27

SECONDARY ACCESSION(S): PRJNA276661

REPOSITORIES: GEO

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Analysis of the gene expression profile in normal human epidermal keratinocytes and cutaneous squamous cell carcinoma cell lines

Project description:The incidence of keratinocyte-derived skin cancer, cutaneous squamous cell carcinoma (cSCC) is increasing worldwide making it the second most common metastatic skin cancer. We used microarrays to characterize gene expression profile in normal human epidermal keratinocytes (NHEK) and cSCC cell lines. Total RNAs from normal human epidermal keratinocytes (n=5) and cSCC cell lines (n=8) were extracted. The samples were processed for Affymetrix 3´ IVT Express Kit according to manufacture’s protocol.

2015-08-27 | E-GEOD-66359 | biostudies-arrayexpress

RNA-Seq whole transcriptome analysis of normal human epidermal keratinocytes and cutaneous squamous cell carcinoma cell lines.

Project description:The incidence of keratinocyte-derived skin cancer, cutaneous squamous cell carcinoma (cSCC) is increasing worldwide making it the second most common metastatic skin cancer. In this project we used SOLiD next generation sequencing to characterize gene expression profiles in normal human epidermal keratinocytes (NHEKs) and cSCC cell lines. Total RNAs from normal human epidermal keratinocytes (NHEKs) (n=4) and cSCC cell lines (n=8) were extracted. The samples were sequenced using SOLiD next generation sequencing.

2015-08-27 | E-GEOD-66412 | biostudies-arrayexpress

RNA-Seq whole transcriptome analysis of normal human epidermal keratinocytes and cutaneous squamous cell carcinoma cell lines.

2015-08-27 | GSE66412 | GEO

Long Non-coding RNA PICSAR Promotes Growth of Cutaneous Squamous Cell Carcinoma by Regulating ERK1/2 Activity

Project description:Keratinocyte-derived cutaneous squamous cell carcinoma (cSCC) is the most common metastatic skin cancer, and its incidence is increasing globally. Long non-coding RNAs (lncRNAs) are involved in various biological processes, and their role in cancer progression is emerging. Whole transcriptome analysis of cSCC cells (n=8) and normal human epidermal keratinocytes (NHEKs, n=4) revealed overexpression of long intergenic ncRNA (LINC00162) in cSCC cells (GSE66412). We wanted to futher study the RNA expression profile of LINC00162 knockdown cSCC cells. Based on our observations, LINC00162 was named PICSAR (P38 Inhibited Cutaneous Squamous cell carcinoma Associated lincRNA).

2016-08-31 | GSE77950 | GEO

Epigenetic regulation of iASPP-p63 feedback loop in cutaneous squamous cell carcinoma

Project description:Keratinocyte skin cancer, comprising cutaneous squamous (cSCC) and basal cell carcinoma, is the most common malignancy in the UK. P53 is frequently mutated in cSCC. iASPP is a key inhibitor of p53 and NF-kB signalling pathways and has been documented as highly expressed in several types of human cancer. We have previously identified an autoregulatory feedback loop between iASPP and p63, which is critical in epidermal homeostasis. We hypothesised a potential role for dysregulation of this axis in the pathogenesis of keratinocyte malignancies. Immunostaining of 116 cSCC clinical samples revealed increased iASPP and ΔNp63 expression but also highlighted a significant alteration of iASPP cellular localisation, with consequent deregulation of its function. Expression patterns, functionality, gene and microRNA expression analysis were further investigated in 10 cSCC cell lines. Our data suggest that whilst direct effects of iASPP and p63 upon each other’s expression are maintained in cSCC, epigenetic dysregulation of the feedback loop occurs at the microRNA level by a novel mechanism controlling p63 expression. We demonstrate that this autoregulatory feedback loop controls cell migration in cSCC by blocking EMT and promoting proliferation, and provides future directions for clinical biomarker and therapeutic target discovery in cutaneous SCC.

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The secretome of skin cancer cells HaCat and A431

Project description:Cutaneous squamous cell carcinoma (cSCC) is the most prominent tumor of non-melanoma skin cancers and the most aggressive tumor among keratinocyte carcinoma of the skin, showing a high potential for local invasion and metastasis. The cSCC incidences increased dramatically in recent years and the disease occurs more commonly than any other malignancy. The secretome of cancer cells is currently the focus of many studies in order to identify new marker proteins for different types of cancer and to investigate its influence on the tumor microenvironment. In our study we evaluated whether the secretome of cSCC cells has an impact on keratinocytes, the surrounding tissue cells of cSCC. Therefore, we analyzed and compared the secretome of human A431 cancer cells and of HaCaT keratinocytes by mass spectrometry.

2020-04-15 | PXD017536 | Pride

Long non-coding RNAs in cutaneous squamous cell carcinoma

Project description:The expression of lncRNAs in cutaneous squamous cell carcinoma (cSCC) were determined with a commercially available microarray (Arraystar Inc.,Rockville, Maryland USA). The Arraystar human lncRNA Microarray V3.0 containing 30,586 LncRNAs and 26,109 coding transcripts (mRNAs) A total of three patients with cSCC were biopsied. A total of three control (non-lesional skin) were biopsied.

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Project description:Analysis of the combined dataset of normal skin, actinic keratosis and cutaneous squamous cell carcinoma (cSCC) previously submitted in (GSE45216) at genomic/transciptomic level. We identified potential cSCC driver genes significantly mutated and upregulated in cSCC relative to normal skin.

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Methylation profiling identifies two subclasses of squamous cell carcinoma related to distinct cell types of origin

Project description:Cutaneous squamous cell carcinoma (cSCC) is the second most common skin cancer type and arises from keratinocytes. Most cSCC progress from a UV-induced precancerous lesion termed actinic keratosis (AK). Despite various efforts to characterize these lesions molecularly, the etiology of AK and its progression to cSCC remain only partially understood. Here we have used Infinium MethylationEPIC BeadChips to interrogate the DNA methylation status of about 850.000 CpGs in epidermal preparations from healthy skin, AK and cSCC. Importantly, we found that the premalignant AK samples displayed classical features of cancer methylomes and were highly similar to cSCC methylomes. Further analysis identified typical features of stem cell methylomes, such as a reduced DNA methylation age, non-CpG methylation and stem cell-related keratin and enhancer methylation patterns. Interestingly, this signature was detected only in one half of the AK and cSCC samples, while the other half showed methylation patterns that were more closely related to the control epidermis. These findings suggest the existence of two distinct subclasses of AK and cSCC that originate from distinct keratinocyte differentiation stages.

2017-12-19 | E-MTAB-5738 | biostudies-arrayexpress

RNA-Seq analysis of cSCC cells followed by siRNA-induced gene knockdown of lncRNA LINC00094 (SERLOC)

Project description:Keratinocyte-derived cutaneous squamous cell carcinoma (cSCC) is the most common metastatic skin cancer, and its incidence is increasing globally. Long non-coding RNAs (lncRNAs) are involved in various biological processes, and their role in cancer progression is emerging. Whole transcriptome analysis of cSCC cells (n=8) and normal human epidermal keratinocytes (NHEKs, n=4) revealed overexpression of long intergenic ncRNA (LINC00094) in cSCC cells (GSE66412). We wanted to futher study the RNA expression profile of LINC00094 knockdown cSCC cells.

2022-08-29 | GSE205981 | GEO

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