Expression of endothelins and their receptors promotes an invasive phenotype of breast tumor cells but is insufficient to induce invasion in benign cells.

Abstract excerpt

There is increased staining of endothelins (ET-1, -2, and -3) and receptors (ET-RA and -RB) in invasive breast tumors compared to nonneoplastic tissue, and ETs stimulate MCF-7 cell invasion in vitro. We analyzed ETstimulation of benign and transformed mammary epithelial cells, and whether expression of ETs is sufficient to induce invasiveness. In breast cancer patient serum, ET-1 was increased in those patients...

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