Figure S2 PIP3 but not Hoechst 33258 shows Plk1 suppression ability. from Targeting Polo-like Kinase 1 by a Novel Pyrrole-Imidazole Polyamide–Hoechst Conjugate Suppresses Tumor Growth In Vivo

(a) Comparison of the cellular uptake of PIP3 and Hoechst 33258. Hela cells were incubated with different concentrations of PIP3 or Hoechst 33258 for 24 hours. Fluorescent microscopy images were acquired and as shown. (b) PIP3 but not Hoechst 33258 shows Plk1 suppression ability. Hela cells were treated with different concentrations of PIP3 or Hoechst 33258 for 72 hours and then collected for western blotting analysis to examine the Plk1 expression. (c) Evaluation of PIP3 stability in vitro. Hela cells were treated with 10 μM PIP3 for 72 hours, then cells were collected and lysed. Released PIP3 was monitored by RP-HPLC analysis. PIP3 dissolved in water was served as control.