Fig. 4
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- ZDB-FIG-240229-43
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- Altbürger et al., 2023 - The proneural factors Ascl1a and Ascl1b contribute to the terminal differentiation of dopaminergic GABAergic dual transmitter neurons in zebrafish
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Global overexpression of ascl1a induces supernumerary and ectopic th+ neurons. (A) Experimental timeline of heatshock overexpression experiments. Embryos from a Tg(hsp70:ascl1a) outcross were heat shocked at 12 hpf and fixed at 30 or 72 hpf for analysis (A, B-E″). (B–E) Whole-mount in situ hybridization for th (B-E″) and ascl1a (G), stages as indicated. Dorsal views (D″,E″) and lateral views (B,B′,C,C′,D,D′,E,E′), genotypes as indicated. (G) Heat shock leads to a global overexpression of ascl1a in Tg(hsp70:ascl1a) outcrosses. (B–C′) Tg(hsp70:ascl1a)+ embryos have ectopic th+ neurons in the peripheral nervous system (arrowheads) when compared to wildtype siblings at 30 hpf. (D-E″) At 72 hpf Tg(hsp70:ascl1a)+ embryos have ectopic th+ neurons in the peripheral nervous system (arrowhead) and additional neurons of the LC. Box with dashed lines in D and E mark magnified part in D′ and E’ (D″ and E’‘: dorsal views of regions corresponding to lateral views in D′ and E′). (F) Summary of the observed phenotypes. For numbers of analyzed embryos see Supplemental Table S2. Abbreviations: hs, heat shock; LC, locus coeruleus; PNS, peripheral nervous system; WISH, whole mount in situ hybridization. Anterior is to the left. Scale bars: 100 μm. |
Reprinted from Developmental Biology, 505, Altbürger, C., Rath, M., Wehrle, J., Driever, W., The proneural factors Ascl1a and Ascl1b contribute to the terminal differentiation of dopaminergic GABAergic dual transmitter neurons in zebrafish, 587458-74, Copyright (2023) with permission from Elsevier. Full text @ Dev. Biol.