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Accession IconGSE70540

Transcribed ultraconserved region 339 promotes carcinogenesis by sequestering tumor suppressor microRNAs

Organism Icon Homo sapiens
Sample Icon 12 Downloadable Samples
Technology Badge Icon Affymetrix Human Genome U133 Plus 2.0 Array (hgu133plus2)

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The transcribed ultraconserved regions (T-UCRs) are a family of long non-coding RNAs implicated in human carcinogenesis. The mechanism of action of T-UCRs and the factors regulating their expression in human cancers are poorly understood. In this study we show that high expression of uc.339 correlates with lower survival in 204 non-small cell lung cancer (NSCLC) patients. We also show that uc.339 found up-regulated in archival NSCLC samples, functions as a decoy for miR-339-3p, -663-3p and -95-5p. As a result, Cyclin E2, a direct target of these microRNAs is up-regulated, promoting cancer growth and migration. We provide evidence from cell lines and primary samples suggesting that TP53 directly regulates uc.339. Our results support a key role for uc.339 in lung cancer.
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