Fig. 5. Overexpression of UPF1, but not NMD-deficient UPF1 mutants, reduces PR toxicity in primary neurons.
a Representative images of mApple-labeled primary cortical neurons expressing BFP (vector), UPF1, or NMD-deficient UPF1 mutants before and after treatment of 2 µM PR20 for 48 h. Scale bar, 100 µm. b Quantification of neuronal survival after 48 h of PR20 treatment. Numbers of independent experiments are indicated in parenthesis. Data are presented as mean values ± SD. **P < 0.01; n.s., not significant, two-sided paired t tests. Source data and exact P values are provided in the Source Data file.