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Ellagic acid, a natural polyphenolic compound, induces apoptosis and potentiates retinoic acid-induced differentiation of human leukemia HL-60 cells

Research Institute for Clinical Oncology, Saitama Cancer Center, 818 Komuro, Ina-machi, Kitaadachi-gun, Saitama, Japan.
International journal of hematology (Impact Factor: 1.68). 07/2010; 92(1):136-43. DOI: 10.1007/s12185-010-0627-4
Source: PubMed

ABSTRACT All-trans retinoic acid (ATRA) is a standard drug used for differentiation therapy in acute promyelocytic leukemia. To potentiate this therapy, we examined the effect of ellagic acid (EA), a natural polyphenolic compound with antiproliferative and antioxidant properties, on the growth and differentiation of HL-60 acute myeloid leukemia cells. EA was found to induce apoptosis, which was blocked by pan-caspase inhibitor, Z-VAD-FMK. EA activated the caspase-3 pathway and enhanced the expressions of myeloid differentiation markers (CD11b, MRP-14 protein, granulocytic morphology) induced by ATRA treatment. These results indicate that EA is a potent apoptosis inducer and also effectively potentiates ATRA-induced myeloid differentiation of HL-60 cells.

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