Transcribed ultraconserved region 339 promotes carcinogenesis by modulating tumor suppressor microRNAs.
Nat Commun
; 8(1): 1801, 2017 11 27.
Article
em En
| MEDLINE
| ID: mdl-29180617
ABSTRACT
The transcribed ultraconserved regions (T-UCRs) encode long non-coding RNAs implicated in human carcinogenesis. Their mechanisms of action and the factors regulating their expression in cancers are poorly understood. Here we show that high expression of uc.339 correlates with lower survival in 210 non-small cell lung cancer (NSCLC) patients. We provide evidence from cell lines and primary samples that TP53 directly regulates uc.339. We find that transcribed uc.339 is upregulated in archival NSCLC samples, functioning as a decoy RNA for miR-339-3p, -663b-3p, and -95-5p. As a result, Cyclin E2, a direct target of all these microRNAs is upregulated, promoting cancer growth and migration. Finally, we find that modulation of uc.339 affects microRNA expression. However, overexpression or downregulation of these microRNAs causes no significant variations in uc.339 levels, suggesting a type of interaction for uc.339 that we call "entrapping". Our results support a key role for uc.339 in lung cancer.
Texto completo:
1
Base de dados:
MEDLINE
Assunto principal:
Sequência Conservada
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Carcinoma Pulmonar de Células não Pequenas
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MicroRNAs
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RNA Longo não Codificante
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Neoplasias Pulmonares
Tipo de estudo:
Prognostic_studies
Limite:
Animals
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Female
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Humans
Idioma:
En
Ano de publicação:
2017
Tipo de documento:
Article