Abstract
Objective: To investigate the anti-leukemic function of econazole (Ec), an azole anti-fungal drug. Methods: We compared efficacy of econazole to induce apoptosis in HL-60 cells with two other known endoplasmic reticulum (ER) stress inducer thapsigargin (Tg) and tunicamycin (Tu). Results: Cells treated with Ec showed typical morphology of apoptosis following 24 h incubation, parallel to the morphological changes, the expression of molecular chaperone GRP 78 was up-regulated in all cases and the caspase 12, an ER resident caspase was activated. Conclusion: Ec induced ER stress related apoptosis in HL-60 cells; the underlying mechanisms are protein synthesis inhibition through elF2a phosphorylation and caspase 12 activation.
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References
Schimmer AD, Hedley DW, Penn LZ, et al. Receptor-and mitochondrial-mediated apoptosis in acute leukemia: a translational view. Blood, 2001, 98: 3541–3553.
Wang X. The expanding role of mitochondria in apoptosis. Genes Dev, 2001, 15: 2922–2933.
Chauncey TR. Drug resistance mechanisms in acute leukemia. Curr Opin Oncol, 2001, 13: 21–26.
Soboloff J, Berger SA. Sustained ER Ca2+ depletion suppresses protein synthesis and induces activation-enhanced cell death in mast cells. J Biol Chem, 2002, 277: 13812–13820.
Zhang Y, Berger SA. Increased calcium influx and ribosomal content correlate with resistance to endoplasmic reticulum stress-induced cell death in mutant leukemia cell lines. J Biol Chem, 2004, 279: 6507–6516.
Ferri KF, Kroemer G. Organelle-specific initiation of cell death pathways. Nat Cell Biol, 2001, 3: E255–263.
Zhang Y, Crump M, Berger SA. Purging of contaminating breast cancer cells from hematopoietic progenitor cell preparations using activation enhanced cell death. Breast Cancer Res Treat, 2002, 72: 265–278.
Soboloff J, Zhang Y, Minden M, et al. Sensitivity of myeloid leukemia cells to calcium influx blockade: application to bone marrow purging. Exp Hematol, 2002, 30: 1219–1226.
Ermak G, Davies KJ. Calcium and oxidative stress: from cell signaling to cell death. Mol Immunol, 2002, 38: 713–721.
Zhang Y, Soboloff J, Zhu Z, et al. Inhibition of Ca2+ influx is required for mitochondrial reactive oxygen species-induced endoplasmic reticulum Ca2+ depletion and cell death in leukemia cells. Mol Pharmacol, 2006, Jul 18 (Epub ahead of print).
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Hu, Z., Liu, W., Berger, S. et al. A preliminary study on the econazole induced endoplasmic reticulum related apoptosis in HL-60 leukemic cells. Chinese German J Clin Oncol 5, 376–378 (2006). https://doi.org/10.1007/s10330-005-0435-0
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DOI: https://doi.org/10.1007/s10330-005-0435-0