Synergistic inhibition of human colon cancer cell growth by the cannabinoid CB1 receptor antagonist rimonabant and oxaliplatin

Patrizia Gazzerro, Anna M. Malfitano, Maria Chiara Proto, Antonietta Santoro, Simona Pisanti, Maria Gabriella Caruso, Maria Notarnicola, Caterina Messa, Chiara Laezza, Gabriella Misso, Michele Caraglia, Maurizio Bifulco

Research output: Contribution to journalArticle

Abstract

Rimonabant (SR141716), a highly selective cannabinoid receptor antagonist, exerts along with its anti-obesity action, pleiotropic functions affecting a broad range of diseases, from obesity-related co-morbidities to drug dependence and cancer. Several studies suggested an anti-tumour activity of rimonabant in several in vitro and in vivo models. In this study, we compared the anti-proliferative effect of SR141716 in the human colon cancer cell line DLD-1 with oxaliplatin, one of the cytotoxic drugs currently used in the treatment of colorectal cancer. We show that SR141716 inhibits DLD-1 cell proliferation similarly to oxaliplatin and if administered in combination SR141716 potentiated the inhibitory effect caused by oxaliplatin. Assessment of drug interaction was performed calculating combination index that showed a strong synergistic effect between the two drugs added to cells in combination. Our findings suggest that the combined synergic effect of SR141716 and oxaliplatin improves the blocking of colon cancer cell proliferation. Therefore, this combination merits further explorations in preclinical and clinical settings.

Original languageEnglish
Pages (from-to)171-175
Number of pages5
JournalOncology Reports
Volume23
Issue number1
DOIs
Publication statusPublished - 2010

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Keywords

  • Cannabinoid receptor
  • Colon
  • Combinatory analysis
  • Oxaliplatin
  • Rimonabant

ASJC Scopus subject areas

  • Cancer Research
  • Oncology

Cite this

Gazzerro, P., Malfitano, A. M., Proto, M. C., Santoro, A., Pisanti, S., Caruso, M. G., Notarnicola, M., Messa, C., Laezza, C., Misso, G., Caraglia, M., & Bifulco, M. (2010). Synergistic inhibition of human colon cancer cell growth by the cannabinoid CB1 receptor antagonist rimonabant and oxaliplatin. Oncology Reports, 23(1), 171-175. https://doi.org/10.3892/or-00000619