Augmentation of Response to Chemotherapy by microRNA-506 Through Regulation of RAD51 in Serous Ovarian Cancers

Guoyan Liu, Da Yang, Rajesha Rupaimoole, Chad V. Pecot, Yan Sun, Lingegowda S. Mangala, Xia Li, Ping Ji, David Cogdell, Limei Hu, Yingmei Wang, Cristian Rodriguez-Aguayo, Gabriel Lopez-Berestein, Ilya Shmulevich, Loris De Cecco, Kexin Chen, Delia Mezzanzanica, Fengxia Xue, Anil K. Sood, Wei Zhang

Research output: Contribution to journalArticlepeer-review


Background: Chemoresistance is a major challenge in cancer treatment. miR-506 is a potent inhibitor of the epithelial-to-mesenchymal transition (EMT), which is also associated with chemoresistance. We characterized the role of miR-506 in chemotherapy response in high-grade serous ovarian cancers. Methods: We used Kaplan-Meier and log-rank methods to analyze the relationship between miR-506 and progression-free and overall survival in The Cancer Genome Atlas (TCGA) (n = 468) and Bagnoli (n = 130) datasets, in vitro experiments to study whether miR-506 is associated with homologous recombination, and response to chemotherapy agents. We used an orthotopic ovarian cancer mouse model (n = 10 per group) to test the effect of miR-506 on cisplatin and PARP inhibitor sensitivity. All statistical tests were two-sided. Results: MiR-506 was associated with better response to therapy and longer progression-free and overall survival in two independent epithelial ovarian cancer patient cohorts (PFS: high vs low miR-506 expression; Bagnoli: hazard ratio [HR] = 3.06, 95% confidence interval [CI] = 1.90 to 4.70, P

Original languageEnglish
Article numberdjv108
JournalJournal of the National Cancer Institute
Issue number7
Publication statusPublished - Jul 1 2015

ASJC Scopus subject areas

  • Cancer Research
  • Oncology


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