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Anti-Invasion Effects of Cannabinoids Agonist and Antagonist on Human Breast Cancer Stem Cells



Mohammadpour F1 ; Ostad SN1 ; Aliebrahimi S2 ; Daman Z1
Authors
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Authors Affiliations
  1. 1. Department of Toxicology and Pharmacology, Faculty of Pharmacy and Poisoning Research Center, Tehran University of Medical Sciences, Tehran, Iran
  2. 2. Department of Cellular and Molecular Biology, School of Biology, College of Science, University of Tehran, Tehran, Iran

Source: Iranian Journal of Pharmaceutical Research Published:2017

Abstract

Studies show that cancer cell invasion or metastasis is the primary cause of death in malignancies including breast cancer. The existence of cancer stem cells (CSCs) in breast cancer may account for tumor initiation, progression, and metastasis. Recent studies have reported different effects of cannabinoids on cancer cells via CB1 and CB2 cannabinoid receptors. In the present study, the effects of ACEA (a selective CB1 receptor agonist) and AM251 (a selective CB1 antagonist) on CSCs and their parental cells were investigated. Breast CSCs derived from MDA-MB-231 cell line were sorted and characterized with CD44+/CD24-/low/ESA+ phenotype. It was observed that ACEA decreased CD44+/CD24-/low/ESA+ cancer stem cell invasiveness. Conversely, AM251 increased the invasion by more than 20% (at the highest concentrations) in both MDA-MB-231 and CSCs. Our results did not show any correlation between reduced invasion and cytotoxic effects of the drug. Since one of the main cancer recurrence factors is anti-cancer drugs fail to inhibit CSC population, this observation would be useful for cancer treatment. © 2017 by School of Pharmacy Shaheed Beheshti University of Medical Sciences and Health Services.
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