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ABSTRACT: Background
Laryngeal squamous cell carcinoma (LSCC) is the most common group among head and neck cancers. LSCC is characterized by a high incidence in Europe. With the aim of better understanding its genetic background we performed global miRNA expression profiling of LSCC cell lines and primary specimens. By this approach we identified a cohort of 33 upregulated and 9 downregulated miRNA genes in LSCC as compared to epithelial no tumor controls.Results
Within this group we identified overexpression of the novel miR-1290 gene not reported in the context of LSCC before. Using a combined bioinformatical approach in connection with functional analysis we delineated two putative target genes of miR-1290 namely ITPR2 and MAF which are significantly downregulated in LSCC. They are interesting candidates for tumor suppressor genes as they are implicated in apoptosis and other processes deregulated in cancer.Conclusion
Taken together, we propose miR-1290 as the new oncomiR involved in LSCC pathogenesis. Additionally, we suggest that the oncogenic potential of miR-1290 might be expressed by the involvement in downregulation of its target genes MAF and ITPR2.
SUBMITTER: Janiszewska J
PROVIDER: S-EPMC4692263 | biostudies-literature | 2015
REPOSITORIES: biostudies-literature
Janiszewska Joanna J Szaumkessel Marcin M Kostrzewska-Poczekaj Magdalena M Bednarek Kinga K Paczkowska Julia J Jackowska Joanna J Grenman Reidar R Szyfter Krzysztof K Wierzbicka Malgorzata M Giefing Maciej M Jarmuz-Szymczak Malgorzata M
PloS one 20151222 12
<h4>Background</h4>Laryngeal squamous cell carcinoma (LSCC) is the most common group among head and neck cancers. LSCC is characterized by a high incidence in Europe. With the aim of better understanding its genetic background we performed global miRNA expression profiling of LSCC cell lines and primary specimens. By this approach we identified a cohort of 33 upregulated and 9 downregulated miRNA genes in LSCC as compared to epithelial no tumor controls.<h4>Results</h4>Within this group we ident ...[more]