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In Vivo. 2003 Nov-Dec;17(6):641-5.

Effects of 6-gingerol, an antioxidant from ginger, on inducing apoptosis in human leukemic HL-60 cells.

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Graduate Institute of Pharmacognosy Science, Taipei Medical University, 250 Wu-Hsing Street, Taipei 110, Taiwan, R.O.C.


6-Gingerol, a naturally occurring plant phenol, is one of the major components of fresh ginger. In this paper, the antioxidative effects of 6-gingerol were detected by DPPH and DCFH assays and, as predicted, 6-gingerol as an antioxidant was shown to protect HL-60 cells from oxidative stress. Moreover, it induced cell death in promyelocytic leukemia HL-60 cells, caused DNA fragmentation and inhibited Bcl-2 expression in HL-60 cells. These results suggested that the inhibition of Bcl-2 expression in HL-60 cells might account for the mechanism of 6-gingerol-induced apoptosis. In the inhibitory assay, the cytotoxic effect of 6-gingerol could be prevented by catalase. We suggest that 6-gingerol induced cell death by mediating reactive oxygen species such as hydrogen peroxide and the superoxide anion. Therefore, the results showed that 6-gingerol induced apoptosis in HL-60 cells, not due to its antioxidative activity.

[Indexed for MEDLINE]

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