Induction of breast tumor cell death by the amiloride derivative UCD38B.

(A) MDA-MB-231, (B) MCF7, and (C) SKBR3 breast cancer cells were exposed for 24 hours to various concentrations of amiloride, UCD74A, or UCD38B, as indicated. Cell viability was measured using the MTT assay. Results depicted in each panel are representative of three independent experiments.