The growth inhibitory action of melatonin on human breast cancer cells is linked to the estrogen response system

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Published on Friday, 30 September 2016

Abstract

The pineal hormone, melatonin, was examined for its capacity to modulate the proliferation of a panel of human breast cancer cell lines.

Melatonin inhibited, to a varying extent, the proliferation of all three estrogen-responsive cell lines, but had no effect on estrogen-insensitive breast tumor cell lines.

Melatonin was also able to specifically block estrogen-induced proliferation in MCF-7 breast cancer cells.

However, this action was abolished in the presence of tamoxifen.

Therefore, it appears that the antiproliferative effects of melatonin are mediated through the estrogen-response pathway.

 



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