Inhibition of Pim-1 attenuates the proliferation and migration in nasopharyngeal carcinoma cells

Asian Pac J Trop Med. 2012 Aug;5(8):645-50. doi: 10.1016/S1995-7645(12)60132-1.


Objective: To explore the role of proto-oncogene Pim-1 in the proliferation and migration of nasopharyngeal carcinoma (NPC) cells.

Methods: Pim-1 expressions in NPC cell lines CNE1, CNE1-GL, CNE-2Z and C666-1 were examined by RT-PCR, western blotting and immunoflucesence, respectively. After CNE1, CNE1-GL and C666-1 cells were treated with different concentrations of Pim-1 special inhibitor, quercetagetin, the cell viability, colony formation rate and migration ability were analyzed.

Results: Pim-1 expression was negative in well-differentiated CNE1 cells, whereas expressed weakly positive in poor-differentiated CNE-2Z cells and strongly positive in undifferentiated C666-1 cells. Interestingly, CNE1-GL cells that derived from CNE1 transfected with an Epstein Barr virus latent membrane protein-1 over-expression plasmid displayed stronger expression of Pim-1. Treatment of CNE1-GL and C666-1 cells with quercetagetin significantly decreased the cell viability, colony formation rate and migration ability but not the CNE1 cells.

Conclusions: These findings suggest that Pim-1 overexpression contributes to NPC proliferation and migration, and targeting Pim-1 may be a potential treatment for anti-Pim-1-expressed NPCs.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Antineoplastic Agents / pharmacology*
  • Biomarkers, Tumor / antagonists & inhibitors
  • Biomarkers, Tumor / metabolism*
  • Blotting, Western
  • Carcinoma
  • Cell Line, Tumor
  • Cell Movement / drug effects
  • Cell Proliferation / drug effects
  • Cell Survival / drug effects
  • Chromones / pharmacology*
  • Flavones
  • Fluorescent Antibody Technique, Indirect
  • Humans
  • Nasopharyngeal Carcinoma
  • Nasopharyngeal Neoplasms / metabolism*
  • Nasopharyngeal Neoplasms / pathology
  • Proto-Oncogene Proteins c-pim-1 / antagonists & inhibitors
  • Proto-Oncogene Proteins c-pim-1 / metabolism*
  • Reverse Transcriptase Polymerase Chain Reaction
  • Tumor Stem Cell Assay


  • Antineoplastic Agents
  • Biomarkers, Tumor
  • Chromones
  • Flavones
  • PIM1 protein, human
  • Proto-Oncogene Proteins c-pim-1
  • quercetagetin