Bioreductive activation of mitoxantrone by NADPH cytochrome P450 reductase. Implications for increasing its ability to inhibit the growth of sensitive and multidrug resistant leukaemia HL60 cells

  • Dorota Kostrzewa-Nowak
  • , Mark J.I. Paine
  • , Anna Korytowska
  • , Katarzyna Serwatka
  • , Sylwia Piotrowska
  • , C. Roland Wolf
  • , Jolanta Tarasiuk (Lead / Corresponding author)

    Research output: Contribution to journalArticlepeer-review

    15 Citations (Scopus)

    Abstract

    The aim of this study was to examine the role of reductive activation of mitoxantrone (MX) by human liver NADPH cytochrome P450 reductase (CPR) in increasing its ability to inhibit the growth of human promyelocytic sensitive leukaemia HL60 cell line as well as its MDR sublines exhibiting two different phenotypes of MDR related to the overexpression of P-glycoprotein (HL60/VINC) or MRP1 (HL60/DOX). Our assays showed that the reduction of MX by exogenously added CPR in the presence of low NADPH concentration had no effect in increasing its ability to inhibit the growth of sensitive and MDR tumour cells. In contrast, an important increase in antiproliferative activity of MX after its reductive activation by CPR at high NADPH concentration was observed against HL60/VINC as well as HL60/DOX cells.

    Original languageEnglish
    Pages (from-to)252-262
    Number of pages11
    JournalCancer Letters
    Volume245
    Issue number1-2
    Early online date29 Mar 2006
    DOIs
    Publication statusPublished - 8 Jan 2007

    Keywords

    • HL60 human promyelocytic leukaemia
    • Mitoxantrone
    • Multidrug resistance
    • NADPH cytochrome P450 reductase
    • Reactive metabolites

    ASJC Scopus subject areas

    • Oncology
    • Cancer Research

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