Alterations of microRNAs throughout the malignant evolution of cutaneous squamous cell carcinoma: the role of miR-497 in epithelial to mesenchymal transition of keratinocytes

Autor: Jason Roszik, A Mizrahi, J. Jacob-Hirsch, Iris Barshack, Yechezkel Sidi, Moamen Masalha, E Elharar, Iddo Z. Ben-Dov, Aviv Barzilai, S Glassberg, Raya Leibowitz-Amit, Tal Meningher, H Tabibian-Keissar, Dror Avni, Devorah Gur-Wahnon
Rok vydání: 2017
Předmět:
Keratinocytes
Male
0301 basic medicine
Cancer Research
Epithelial-Mesenchymal Transition
Skin Neoplasms
Biopsy
Primary Cell Culture
Biology
medicine.disease_cause
03 medical and health sciences
0302 clinical medicine
Cell Line
Tumor
Plasminogen Activator Inhibitor 1
microRNA
Genetics
medicine
Carcinoma
Humans
Epithelial–mesenchymal transition
Molecular Biology
Aged
Aged
80 and over
Regulation of gene expression
Epidermis (botany)
Sequence Analysis
RNA
Actinic keratosis
High-Throughput Nucleotide Sequencing
Middle Aged
medicine.disease
Fold change
Gene Expression Regulation
Neoplastic
MicroRNAs
Cell Transformation
Neoplastic
030104 developmental biology
Epidermal Cells
030220 oncology & carcinogenesis
Immunology
Carcinoma
Squamous Cell
Disease Progression
Cancer research
Female
Epidermis
Carcinogenesis
Zdroj: Oncogene. 37:218-230
ISSN: 1476-5594
0950-9232
DOI: 10.1038/onc.2017.315
Popis: Skin carcinogenesis is known to be a multi-step process with several stages along its malignant evolution. We hypothesized that transformation of normal epidermis to cutaneous squamous cell carcinoma (cSCC) is causally linked to alterations in microRNAs (miRNA) expression. For this end we decided to evaluate their alterations in the pathologic states ending in cSCC. Total RNA was extracted from formalin fixed paraffin embedded biopsies of five stages along the malignant evolution of keratinocytes towards cSCC: Normal epidermis, solar elastosis, actinic keratosis KIN1-2, advanced actinic keratosis KIN3 and well-differentiated cSCC. Next-generation small RNA sequencing was performed. We found that 18 miRNAs are overexpressed and 28 miRNAs are underexpressed in cSCC compared to normal epidermis. miR-424, miR-320, miR-222 and miR-15a showed the highest fold change among the overexpressed miRNAs. And miR-100, miR-101 and miR-497 showed the highest fold change among the underexpressed miRNAs. Heat map of hierarchical clustering analysis of significantly changed miRNAs and principle component analysis disclosed that the most prominent change in miRNAs expression occurred in the switch from 'early' stages; normal epidermis, solar elastosis and early actinic keratosis to the 'late' stages of epidermal carcinogenesis; late actinic keratosis and cSCC. We found several miRNAs with 'stage specific' alterations while others display a clear 'gradual', either progressive increase or decrease in expression along the malignant evolution of keratinocytes. The observed alterations focused in miRNAs involved in the regulation of AKT/mTOR or in those involved in epithelial to mesenchymal transition. We chose to concentrate on the evaluation of the molecular role of miR-497. We found that it induces reversion of epithelial to mesenchymal transition. We proved that SERPINE-1 is its biochemical target. The present study allows us to further study the pathways that are regulated by miRNAs along the malignant evolution of keratinocytes towards cSCC.
Databáze: OpenAIRE
Externí odkaz: