Fig. 3
a Experimental setup. b Schematic showing antisense morpholino (MO)-mediated transient knockdown. c, d Light-sheet imaging showed a significantly decreased number of pu.1?+?myeloid cells by pu.1 MO knockdown in the zebrafish brain at 3 dpf. Independent t test, **, p?<?0.01. Scale bar, 10?µm. e, f Light-sheet imaging showed that pu.1 MO knockdown inhibited the increase in pu.1?+?myeloid cells in the zebrafish brain at 1 dpt. Two-way ANOVA with Tukey?s HSD post hoc test, **, p?<?0.01 compared with CTRL. Scale bar, 20?µm. g, h Schematic showing the locomotor behavioral assay and thigmotaxis for zebrafish larvae. i Peripheral trauma increased the swim speed and active time of zebrafish larvae at 7 dpf/4 dpt. Independent t test, **, p?<?0.01. j?k Behavioral assays suggested anxiety-like behaviors, including hyperactivity and thigmotaxis, in zebrafish at 4 dpi, which could be rescued by pu.1 MO knockdown. Two-way ANOVA with Tukey?s HSD post hoc test, *, p?<?0.05 compared with CTRL. l?m il1b mutation rescued hyperactivity but not thigmotaxis at 4 dpi. Two-way ANOVA with Tukey?s HSD post hoc test, *, p?<?0.05 compared to CTRL, #, p?<?0.05 compared to il1bMut.