The long noncoding RNA HOXA11 antisense induces tumor progression and stemness maintenance in cervical cancer

Hee Jung Kim, Kyung Jin Eoh, Lee Kyung Kim, Eun Ji Nam, Sun Och Yoon, Kun Hong Kim, Jae Kwan Lee, Sang Wun Kim, Young Tae Kim

Research output: Contribution to journalArticlepeer-review

59 Citations (Scopus)

Abstract

Recent research has focused on the impact of long noncoding RNA (lncRNA) in cervical carcinogenesis. However, whether HOXA11 antisense (HOXA11-AS) is involved in cervical cancer remains to be elucidated. In the present study, we examined HOXA11-AS expression levels in cervical cancer patients and determined the relationships between HOXA11-AS expression and clinicopathological factors. We also investigated the bio-functional consequences of HOXA11-AS overexpression both in vitro and in vivo. HOXA11-AS expression was significantly greater in tissues from patients with cervical cancer than in control patients (P < 0.001). Multivariate analysis showed that high HOXA11-AS was an independent prognosticator of overall survival (Hazard ratio=2.450, P=0.032). HOXA11-AS overexpression enhanced cell proliferation, migration, and tumor invasion in vitro, whereas HOXA11-AS knockdown inhibited these biologic aggressive features. These adverse changes were accompanied by characteristics of epithelial-mesenchymal transition (EMT). In vivo xenograft experiments using the siHOXA11-AS-transfected HeLa cells revealed that HOXA11-AS strongly induced tumor growth. Furthermore, we found that HOXA11-AS knockdown decreased cancer stemness and triggered the EMT program. In conclusion, HOXA11-AS overexpression correlated with poor survival in patients with cervical cancer. Thus, HOXA11-AS may be a pivotal target for exploring novel cervical cancer therapeutics.

Original languageEnglish
Pages (from-to)83001-83016
Number of pages16
JournalOncotarget
Volume7
Issue number50
DOIs
Publication statusPublished - 2016

Keywords

  • Cervical cancer
  • HOXA11 antisense
  • Invasion
  • Long noncoding RNA
  • Prognosis

ASJC Scopus subject areas

  • Oncology

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