Narrator: This is Science Today. A chemical found in broccoli and other similar vegetables may actually help treat breast cancer. Gary Firestone, a professor of molecular and cell biology at the University of California, Berkeley, found that the chemical, called indole-3-carbinol, inhibited growth by stopping the tumor's cell cycle.
Firestone: And what the cell cycle is, it's the process by which cells replicate. Which is very important, because if you can stop cell cycles, or cells from replicating, you can stop the growth of a tumor cell. 0:11
Narrator: Indole-3-carbinol also works independently of estrogen, making it a good candidate for combination therapy with tamoxifen, a potent breast cancer drug that interferes with estrogen.
Firestone: So here's a classic example where the indole-3-carbinol works by one pathway, tamoxifen works by another pathway and sure enough, when you add the two together, the effect is much greater than of either one alone.
Narrator: Although the research is still in the earliest stages, Firestone says the results are very promising and may even benefit other cancers. For Science Today, I'm Larissa Branin.