Ultraconserved long non-coding RNA uc.63 in breast cancer

Alberto Marini, Anna Maria Lena, Emanuele Panatta, Cristina Ivan, Leng Han, Han Liang, Margherita Annicchiarico-Petruzzelli, Nicola Di Daniele, George A. Calin, Eleonora Candi, Gerry Melino

Research output: Contribution to journalArticlepeer-review

36 Scopus citations

Abstract

Transcribed-ultraconserved regions (T-UCRs) are long non-coding RNAs (lncRNA) encoded by a subset of long ultraconserved stretches in the human genome. Recent studies revealed that the expression of several T-UCRs is altered in cancer and growing evidences underline the importance of T-UCRs in oncogenesis, offering also potential new strategies for diagnosis and prognosis. We found that overexpression of one specific T-UCRs named uc.63 is associated with bad outcome in luminal A subtype of breast cancer patients. uc.63 is localized in the third intron of exportin-1 gene (XPO1) and is transcribed in the same orientation of its host gene. Interestingly, silencing of uc.63 induces apoptosis in vitro. However, silencing of host gene XPO1 does not cause the same effect suggesting that the transcription of uc.63 is independent of XPO1. Our results reveal an important role of uc.63 in promoting breast cancer cells survival and offer the prospect to identify a signature associated with poor prognosis.

Original languageEnglish (US)
Pages (from-to)35669-35680
Number of pages12
JournalOncotarget
Volume8
Issue number22
DOIs
StatePublished - 2017

Keywords

  • Apoptosis
  • Breast cancer
  • LncRNA
  • Prognosis
  • T-UCRs

ASJC Scopus subject areas

  • Oncology

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