Abstract
Small noncoding microRNAs (miRNAs) can contribute to cancer development and progression and are differentially expressed in normal tissues and cancers. From a large-scale miRnome analysis on 540 samples including lung, breast, stomach, prostate, colon, and pancreatic tumors, we identified a solid cancer miRNA signature composed by a large portion of overexpressed miRNAs. Among these miRNAs are some with well characterized cancer association, such as miR-17-5p, miR-20a, miR-21, miR-92, miR-106a, and miR-155. The predicted targets for the differentially expressed miRNAs are significantly enriched for protein-coding tumor suppressors and oncogenes (P < 0.0001). A number of the predicted targets, including the tumor suppressors RB1 (Retinoblastoma 1) and TGFBR2 (transforming growth factor, beta receptor II) genes were confirmed experimentally. Our results indicate that miRNAs are extensively involved in cancer pathogenesis of solid tumors and support their function as either dominant or recessive cancer genes.
MeSH Terms
Gene Expression Profiling
Genes, Neoplasm/genetics
Genes, Tumor Suppressor
Humans
MicroRNAs/genetics,metabolism
Neoplasms/genetics
Oligonucleotide Array Sequence Analysis
Tumor Cells, Cultured
Authors & Affiliations
18 authors, click to expand affiliations / ORCID
Volinia Stefano
Department of Molecular Virology, Immunology, and Medical Genetics and Cancer Comprehensive Center, Ohio State University, Columbus, OH 43210, USA.
Calin George A
Liu Chang-Gong
Ambs Stefan
Cimmino Amelia
Petrocca Fabio
Visone Rosa
Iorio Marilena
Roldo Claudia
Ferracin Manuela
Prueitt Robyn L
Yanaihara Nozumu
Lanza Giovanni
Scarpa Aldo
Vecchione Andrea
Negrini Massimo
Harris Curtis C
Croce Carlo M
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