Table 2. Assessment of Designed ETPs for Cytotoxicity in Five Human Cancer Cell Lines^a.

^aHeLa (cervical carcinoma), A549 (alveolar adenocarcinoma), MCF7 (breast adenocarcinoma), HCT 116 (colorectal carcinoma), and DU 145 (prostate carcinoma). 72-h IC₅₀ values (in nM) as determined by Cell Titer-Glo (Promega), measuring ATP levels as a surrogate for cell viability. Error is standard deviation of the mean, n ≥ 2; IC₅₀ = half maximal inhibitory concentration.