Abstract
The effects of niacin, namely, nicotinic acid and nicotinamide, and trigonelline on the proliferation and invasion of cancer cells were studied using a rat ascites hepatoma cell line of AH109A in culture. Niacin and trigonelline inhibited the invasion of hepatoma cells at concentrations of 2.5-40 microM without affecting proliferation. Hepatoma cells previously cultured with a reactive oxygen species (ROS)-generating system showed increased invasive activity. Niacin and trigonelline suppressed this ROS-potentiated invasive capacity through simultaneous treatment of AH109A cells with the ROS-generating system. The present study indicates for the first time the anti-invasive activities of niacin and trigonelline against cancer cells.
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