Fig. 1.

BCI-215 is nontoxic to rat hepatocytes and developing zebrafish embryos. (A–C) Rat hepatocytes were treated in 96-well plates with 10-point concentration gradients of DUSP inhibitors and menadione as a positive control for hepatotoxicity. Sanguinarine, NSC95397, BCI, and menadione, but not BCI-215 produced dose-dependent cell death in rat hepatocytes as measured by (A) PI uptake and (B) loss of mitochondrial membrane integrity. (C) Hepatocyte toxicity correlated with production of ROS. (D and E) In contrast to other DUSP inhibitors, BCI-215 did not generate ROS in developing zebrafish embryos. Data and images are from a single experiment that has been repeated once. Scale bar, 500 µm.