The impact of retinoic acid treatment on the sensitivity of neuroblastoma cells to fenretinide

  • Authors:
    • Jane L. Armstrong
    • Shaun Martin
    • Nicola A. Illingworth
    • David Jamieson
    • Abbie Neilson
    • Penny E. Lovat
    • Chris P.F. Redfern
    • Gareth J. Veal
  • View Affiliations

  • Published online on: September 29, 2011     https://doi.org/10.3892/or.2011.1479
  • Pages: 293-298
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Abstract

Despite the successful introduction of 13-cis retinoic acid (13cisRA) therapy for the treatment of neuroblastoma, approximately 50% patients do not respond or experience relapse. A retinoid analogue, fenretinide [N-(4-hydroxyphenyl) retinamide; 4-HPR] can induce apoptosis in neuroblastoma cell lines and could have clinical use after therapy with 13cisRA. However, there are important questions concerning potential retinoid drug interactions which need to be addressed. The aim of this study was to investigate the influence of retinoic acid pre-treatment on fenretinide-induced apoptosis and fenretinide metabolism in neuroblastoma cell lines. Apoptosis was measured by flow cytometry of propidium iodide-stained neuroblastoma cells and a live-cell imaging assay. Intracellular fenretinide metabolism was determined by HPLC analysis. Pre-treatment of neuroblastoma cell lines with retinoic acid (RA) resulted in a significant decrease in the apoptotic response to fenretinide in three of the four lines tested. Comparison between responsive and non-responsive cell lines suggested that RA sensitivity was required to promote fenretinide resistance, and that this was mediated by up-regulation of Bcl-2 and the inhibition of pro-apoptotic fenretinide signalling pathways. Induction of the oxidative metabolism of fenretinide after RA pre-treatment did not significantly impact on intracellular parent drug levels and is unlikely to explain the decreased apoptotic response observed. The interaction between RA and fenretinide could have important implications for the scheduling of fenretinide in therapeutic protocols for neuroblastoma.

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January 2012
Volume 27 Issue 1

Print ISSN: 1021-335X
Online ISSN:1791-2431

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Spandidos Publications style
Armstrong JL, Martin S, Illingworth NA, Jamieson D, Neilson A, Lovat PE, Redfern CP and Veal GJ: The impact of retinoic acid treatment on the sensitivity of neuroblastoma cells to fenretinide. Oncol Rep 27: 293-298, 2012
APA
Armstrong, J.L., Martin, S., Illingworth, N.A., Jamieson, D., Neilson, A., Lovat, P.E. ... Veal, G.J. (2012). The impact of retinoic acid treatment on the sensitivity of neuroblastoma cells to fenretinide. Oncology Reports, 27, 293-298. https://doi.org/10.3892/or.2011.1479
MLA
Armstrong, J. L., Martin, S., Illingworth, N. A., Jamieson, D., Neilson, A., Lovat, P. E., Redfern, C. P., Veal, G. J."The impact of retinoic acid treatment on the sensitivity of neuroblastoma cells to fenretinide". Oncology Reports 27.1 (2012): 293-298.
Chicago
Armstrong, J. L., Martin, S., Illingworth, N. A., Jamieson, D., Neilson, A., Lovat, P. E., Redfern, C. P., Veal, G. J."The impact of retinoic acid treatment on the sensitivity of neuroblastoma cells to fenretinide". Oncology Reports 27, no. 1 (2012): 293-298. https://doi.org/10.3892/or.2011.1479