Title | Assessing the effect of imatinib on the expression of genes involved in mitochondrial cell respiration in human K-562 CML cells | |
Authors | Ioannis D. Bonovolias, Lefkothea C. Papadopoulou and Asterios S. Tsiftsoglou
Laboratory of Pharmacology, Department of Pharmaceutical Sciences, Aristotle University of Thessaloniki (A.U.TH.), GR-54124, Thessaloniki, GREECE |
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Citation | Bonovolias, I.D., Papadopoulou, L.C., Tsiftsoglou, A.S.: Assessing the effect of imatinib on the expression of genes involved in mitochondrial cell respiration in human K-562 CML cells, Epitheorese Klin. Farmakol. Farmakokinet. 24(2): 123-124 (2010) | |
Publication Date | 2010 | |
Full Text Language | English | |
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Keywords | Imatinib, COX deficiency, Mitochondrion, K-562 cells. | |
Other Terms | Review article | |
Summary | Imatinib (IM) is a selective targeted inhibitor of chimeric Bcr-Abl tyrosine kinase, developed as a highly effective first line therapeutic agent to treat human chronic myelogenous leukemia and acute lympho-cytic leukemia. Although IM is a designed molecular inhibitor of Bcr-Abl tyrosine kinase, additional mechanisms perhaps are involved leading to IM-induced drug resistance and cardiovascular toxicity. Our most recent observations that hemin (the oxidized form of heme) can counteract the cytotoxic effect of IM, prompted us to investigate the question whether IM dismantles the mitochondrial cell respiration pathway by blocking the expression of several genes encoding vital hemoproteins and other related proteins involved in the biosynthesis of cytochrome c oxidase. RT-PCR analysis revealed that IM repressed the expression of SCO2, COX17, Frataxin and Ferrochelatase genes, among others involved in mitochondrial respiratory chain pathway. These results indicate that IM selectively represses the expression of key-genes and provide novel mechanism(s) of IM that may explain its cardiovascular toxicity. | |
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Online ISSN 1011-6575
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