NF-κB-HOTAIR axis links DNA damage response, chemoresistance and cellular senescence in ovarian cancer

A. R. Özeş, D. F. Miller, O. N. Özeş, F. Fang, Yunlong Liu, Daniela Matei, T. Huang, Kenneth Nephew

Research output: Contribution to journalArticle

89 Citations (Scopus)

Abstract

The transcription factor nuclear factor kappa B (NF-κB) and the long non-coding RNA (lncRNA) HOTAIR (HOX transcript antisense RNA) have diverse functional roles in cancer. In this study, we show that upregulation of HOTAIR induced platinum resistance in ovarian cancer, and increased HOTAIR levels were observed in recurrent platinum-resistant ovarian tumors vs primary ovarian tumors. To investigate the role of HOTAIR during DNA damage induced by platinum, we monitored double-strand breaks and show that HOTAIR expression results in sustained activation of DNA damage response (DDR) after platinum treatment. We demonstrate that ectopic expression of HOTAIR induces NF-κB activation during DDR and interleukin-6 and interleukin-6 expression, both key NF-κB target genes. We show that HOTAIR regulates activation of NF-κB by decreasing Iκ-Bα (NF-κB inhibitor) and establish that by inducing prolonged NF-κB activation and expression of NF-κB target genes during DNA damage, HOTAIR has a critical role in cellular senescence and platinum sensitivity. Our findings suggest that an NF-κB-HOTAIR axis drives a positive-feedback loop cascade during DDR and contributes to cellular senescence and chemotherapy resistance in ovarian and other cancers.Oncogene advance online publication, 4 April 2016; doi:10.1038/onc.2016.75.

Original languageEnglish (US)
JournalOncogene
DOIs
StateAccepted/In press - Apr 4 2016

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Antisense RNA
NF-kappa B
Cell Aging
Ovarian Neoplasms
DNA Damage
Platinum
Interleukin-6
Long Noncoding RNA
Neoplasms
Oncogenes
Genes
Publications
Transcription Factors
Up-Regulation
Drug Therapy

ASJC Scopus subject areas

  • Molecular Biology
  • Cancer Research
  • Genetics

Cite this

NF-κB-HOTAIR axis links DNA damage response, chemoresistance and cellular senescence in ovarian cancer. / Özeş, A. R.; Miller, D. F.; Özeş, O. N.; Fang, F.; Liu, Yunlong; Matei, Daniela; Huang, T.; Nephew, Kenneth.

In: Oncogene, 04.04.2016.

Research output: Contribution to journalArticle

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