Fig. S8
In the swimbladder, DPI reduces the neutrophil migration to wounding, but not to C. albicans. (A) Diagram illustrating the injection site (red line) in 4 dpf zebrafish. (B and C) 4 dpf mpx:GFP zebrafish were treated from 1 hour pre-injection to 4 hpi with 100 μM DPI (in DMSO) or vehicle (0.8% DMSO). Fish were injected with 5–20 yeasts of C. albicans CAF2-dTomato in the swimbladder. (B) The C. albicans inoculum was quantified by confocal microscopy within 30 minutes post-infection. (C) Neutrophils were enumerated by confocal microscopy, at the site of infection (SOI) 4 hours post infection. Four independent experiments were performed, with comparable results, and individuals from all four experiments are pooled together. Means and standard error of the mean are represented. N = 33, 30, 62, 46, 67 and 35 for the following six conditions: No injection (DMSO treated and DPI treated); PBS injection (DMSO treated and DPI treated); and Caf2-dTomato injection (DMSO treated and DPI treated), respectively. Statistical tests performed were Mann-Whitney (for panel A) and Kruskall-Wallis (for panel B), n.s. non significant, * p<0.05. (D) Representative images of 4 dpf mpx:GFP zebrafish 4 hpi. Images are composites of maximum projection of the red and green channels (20 slices for no injection and PBS injection and 25 slices for CAF2-dTomato injection) overlaid with a single slice in the DIC channel. Blue outlines in images define the swimbladder site of injection where the neutrophils were counted. Scale bars = 100 μm. |