Upregulation of the mevalonate pathway by cholesterol depletion abolishes tolerance to N-bisphosphonate induced V[gamma]9V[delta]2 T cell cytotoxicity in PC-3 prostate cancer cells
Zoledronate (ZOL) inhibits farnesyl pyrophosphate synthase leading to intracellular accumulation of isopentenyl pyrophosphate/triphosphoric acid 1-adenosin-5'-yl ester 3-(3-methylbut-3-enyl) ester (IPP/ApppI). Cytotoxic Vγ9Vδ2 T cells have been shown to recognize IPP/ApppI in breast cancer cell...
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Veröffentlicht in: | Cancer letters 2015-02, Vol.357 (1), p.279 |
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creator | Arkko, S Zlatev, HP Mönkkönen, H Räikkönen, J Benzaïd, I Clézardin, P Mönkkönen, J Määttä, JA |
description | Zoledronate (ZOL) inhibits farnesyl pyrophosphate synthase leading to intracellular accumulation of isopentenyl pyrophosphate/triphosphoric acid 1-adenosin-5'-yl ester 3-(3-methylbut-3-enyl) ester (IPP/ApppI). Cytotoxic Vγ9Vδ2 T cells have been shown to recognize IPP/ApppI in breast cancer cells. Further, human breast cancer cells have been shown to differ remarkably in their ZOL treatment induced IPP/ApppI production and responses to that. In this communication we analysed the responsiveness of prostate cancer cells PC-3 and DU-145, Caki-2 renal carcinoma cells and U87MG glioblastoma cells to ZOL treatment, and the subsequent activation of Vγ9Vδ2 T-cell cytotoxicity. Of the cell lines tested, PC-3 cells were not susceptible to Vγ9Vδ2 T-cell cytotoxicity due to low activity of the mevalonate pathway and low amount of IPP formed. However, the resistance of PC-3 cells to Vγ9Vδ2 T-cell cytotoxicity could be abrogated by upregulation of the mevalonate pathway through cholesterol depletion. |
doi_str_mv | 10.1016/j.canlet.2014.11.030 |
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Cytotoxic Vγ9Vδ2 T cells have been shown to recognize IPP/ApppI in breast cancer cells. Further, human breast cancer cells have been shown to differ remarkably in their ZOL treatment induced IPP/ApppI production and responses to that. In this communication we analysed the responsiveness of prostate cancer cells PC-3 and DU-145, Caki-2 renal carcinoma cells and U87MG glioblastoma cells to ZOL treatment, and the subsequent activation of Vγ9Vδ2 T-cell cytotoxicity. Of the cell lines tested, PC-3 cells were not susceptible to Vγ9Vδ2 T-cell cytotoxicity due to low activity of the mevalonate pathway and low amount of IPP formed. 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subjects | Breast cancer Drug resistance Immunotherapy Prostate cancer |
title | Upregulation of the mevalonate pathway by cholesterol depletion abolishes tolerance to N-bisphosphonate induced V[gamma]9V[delta]2 T cell cytotoxicity in PC-3 prostate cancer cells |
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