Expression of dlx1a, dlx2a, dlx5a and dlx6a post-lesion in adult zebrafish.
Top left panel (A) shows the location of the mechanical lesion. Expression of the four dlx paralogs in controls (C-F and G-J) and lesioned brains at 3 dpl (C’-F’) and 7 dpl (G’-J’). Down-regulation of dlx5a is suggested at 3dpl (E’ indicated by gray arrow) and confirmed by RT-qPCR (B) (Student’s t-test, n = 5, p = 0.004). A slight up-regulation of dlx2a and dlx5a is seen at 7dpl compared to controls. For each gene, and for each time point, assays were carried out with at least 2 biological replicates in 3 different experimental repetitions (N = 6). RT-qPCR analyses at 7dpl (K) reveals no significant changes in expression levels of dlx1a, dlx2a and dlx6a (N = 7 for each gene each). A significant increase in dlx5a expression was observed at 7dpl (Student’s t-test, n = 7, p = 0.008). Scale bar: 400 μM.