Cancer Chemotherapy and Pharmacology

, Volume 64, Issue 2, pp 419–424

The glutathione S-transferase inhibitor 6-(7-nitro-2,1,3-benzoxadiazol-4-ylthio)hexanol overcomes the MDR1-P-glycoprotein and MRP1-mediated multidrug resistance in acute myeloid leukemia cells

Authors

  • Alessandro Ascione
    • Section of Pharmacogenetics, Drug Resistance and Experimental Therapeutics, Department of Therapeutic Research and Medicines EvaluationIstituto Superiore di Sanità
  • Maurizio Cianfriglia
    • Section of Pharmacogenetics, Drug Resistance and Experimental Therapeutics, Department of Therapeutic Research and Medicines EvaluationIstituto Superiore di Sanità
  • Maria Luisa Dupuis
    • Section of Pharmacogenetics, Drug Resistance and Experimental Therapeutics, Department of Therapeutic Research and Medicines EvaluationIstituto Superiore di Sanità
  • Alessandra Mallano
    • Section of Pharmacogenetics, Drug Resistance and Experimental Therapeutics, Department of Therapeutic Research and Medicines EvaluationIstituto Superiore di Sanità
  • Andrea Sau
    • Department of Chemical Sciences and TechnologiesUniversity of Rome “Tor Vergata”
  • Francesca Pellizzari Tregno
    • Department of Chemical Sciences and TechnologiesUniversity of Rome “Tor Vergata”
  • Silvia Pezzola
    • Department of Chemical Sciences and TechnologiesUniversity of Rome “Tor Vergata”
    • Department of Chemical Sciences and TechnologiesUniversity of Rome “Tor Vergata”
Short Communication

DOI: 10.1007/s00280-009-0960-6

Cite this article as:
Ascione, A., Cianfriglia, M., Dupuis, M.L. et al. Cancer Chemother Pharmacol (2009) 64: 419. doi:10.1007/s00280-009-0960-6

Abstract

Purpose

There has been an ever growing interest in the search for new anti-tumor compounds that do not interact with MDR1-Pgp and MRP1 drug transporters and so circumvent the effect of these proteins conferring multidrug resistance (MDR) and poor prognosis in AML patients. We have investigated the cytotoxic activity of the strong glutathione S-transferase (GST) inhibitor 6-(7-nitro-2,1,3-benzoxadiazol-4-ylthio)hexanol (NBDHEX) on AML (HL60) cell lines.

Methods

Functional drug efflux studies and cell proliferation assays were performed on both sensitive and MDR AML (HL60) cells after incubation with NBDHEX. Moreover, the mode of cell death (apoptosis vs. necrosis) as well as the correlation between NBDHEX susceptibility and GST activity or Bcl-2 expression was investigated.

Results

NBDHEX is not a substrate of either MDR1-Pgp or MRP1 efflux pumps; in fact, it is not only cytotoxic toward the parental HL60 cell line, but also overcomes the MDR phenotype of its HL60/DNR and HL60/ADR variants.

Conclusions

The data herein reported show that NBDHEX mediates efficient killing of both MDR1-Pgp and MRP1 over-expressing AML cells. Therefore, this drug can potentially be used as an effective agent for treating MDR in AML patients.

Keywords

Multidrug resistanceAnti-tumor drugsAcute myeloid leukemiaNBDHEX

Copyright information

© Springer-Verlag 2009