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Fig. 1 S1
Characterization of radial glia or neuronal ablation by the NTR/Mtz-mediated cell ablation method.
(A and B) 30 hpf Tg(elavl3:EGFP);TgBAC(gfap:gal4ff);Tg(UAS:mcherry-NTR) trunk sections at the level of the anterior (A) or posterior (B) SC. EGFP+ neurons and mCherry+ radial glia are largely segregated. Scale bar, 20 µm. (C) Experimental time course of NTR/Mtz-mediated ablation for the panels (D?I?). (D?D? and E?E?) 82 hpf Tg(elavl3:EGFP);Tg(elavl3:gal4);Tg(UAS:mcherry-NTR) trunks after treatment with DMSO (D?D?) or 2 mM Mtz (E?E?) starting at 30 hpf. Unlike DMSO-treated fish that show strong co-expression of Tg(elavl3:EGFP) and Tg(elavl3:gal4);Tg(UAS:mCherry-NTR) in their spinal cord, Mtz-treated fish show a dramatic reduction of this co-expression. (F?F? and G?G?) 82 hpf TgBAC(gfap:gfap-EGFP);Tg(elavl3:gal4);Tg(UAS:mcherry-NTR) trunks after treatment with DMSO (F?F?) or 2 mM Mtz (G?G?) starting at 30 hpf. Mtz-treated fish show a dramatic reduction of Tg(elavl3:gal4);Tg(UAS:mCherry-NTR) expression in their spinal cord, however, TgBAC(gfap:Gfap-EGFP) expression appears unaffected as compared to DMSO-treated fish. (H?H? and I?I?) 82 hpf Tg(elavl3:EGFP);TgBAC(gfap:gal4ff);Tg(UAS:mcherry-NTR) trunks after treatment with DMSO (H?H?) or 2 mM Mtz (I?I?) starting at 30 hpf. Mtz-treated fish show a dramatic reduction of TgBAC(gfap:gal4ff);Tg(UAS:mCherry-NTR) expression in their spinal cord, and Tg(elavl3:EGFP) expression is also slightly reduced as compared to DMSO-treated fish that show strong expression of both TgBAC(gfap:gal4ff);Tg(UAS:mCherry-NTR) and Tg(elavl3:EGFP) expression in their spinal cord. Scale bar, 100 µm.