Ent-11α-hydroxy-15-oxo-kaur-16-en-19-oic-acid induces apoptosis and cell cycle arrest in CNE-2Z nasopharyngeal carcinoma cells

Kefeng Wu, Yi Liu, Yingnian Lv, Liao Cui, Wende Li, Jianfa Chen, Nian Ci Liang, Li Li

Research output: Contribution to journalArticlepeer-review

8 Citations (Scopus)


Ent-11α-hydroxy-15-oxo-kaur-16-en-19-oic-acid (5F), a compound isolated from Pteris semipinnata L. (PsL), inhibits cell proliferation and induces cell apoptosis in several cancer lines. We found that 5F induced apoptosis and G2 phase cell cycle arrest in the CNE-2Z nasopharyngeal carcinoma (NPC) cells, accompanied by a decrease of NF-κB expression. 5F suppressed the viability of CNE-2Z cells in a time- and dose-dependent manner. 5F induced G2/M phase cell cycle arrest, but did not induce p21. Further analysis revealed that CNE-2Z cells harbored two p53 mutations. 5F treatment resulted in mitochondrial apoptosis, associated with increased Bax/Bcl-2 ratio, upregulation of cytochrome c in the cytosol, decreased NF-κB-p65 and increased IκB. Of note, 5F significantly sensitized CNE-2Z cells to cisplatin. 5F did not increase ROS, but reduced ROS production alone or in combination with cisplatin. Our data suggest that 5F is a potential anti-NPC drug for the development of single agent therapy and therapy in combination with cisplatin.

Original languageEnglish
Pages (from-to)2101-2108
Number of pages8
JournalOncology reports
Issue number6
Publication statusPublished - 2013 Jun
Externally publishedYes


  • Cisplatin
  • Ent-11α-hydroxy-15-oxo-kaur-16-en-19-oic-acid
  • NF-κB
  • Naso-pharyngeal carcinoma
  • p53

ASJC Scopus subject areas

  • Oncology
  • Cancer Research


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