FIGURE

Fig. 1

ID

ZDB-FIG-190821-38

Publication

Helker et al., 2019 - Whole organism small molecule screen identifies novel regulators of pancreatic endocrine development

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Fig. 1

pdx1 expression in β-cells and ductal cells. (A,A′) Visualization of Tg^BAC(pdx1:EGFP)expression. A 200 kb pdx1 BAC drives EGFP expression specifically in the pancreatic islet (arrows). Pancreatic β-cell-specific reporter signal in Tg(ins:Kaede) larva is shown for comparison. (B,B′) Confocal images of the pancreatic islet of a 120 hpf Tg^BAC(pdx1:EGFP); Tg(ins:DsRed) larva showing β-cell Tg^BAC(pdx1:EGFP) expression. (C-C‴) Confocal images of the pancreas of a 120 hpf Tg^BAC(pdx1:EGFP) larva immunostained for GFP, Pdx1 and Nkx6.1 showing colocalization of Tg^BAC(pdx1:EGFP) expression with endogenous Pdx1. (D) Dynamics of pdx1promoter activity over time as measured by Tg^BAC(pdx1:luciferase) activity. The Tg^BAC(pdx1:luciferase) signal starts to become detectable at 72 hpf, peaks at 120 hpf and decreases by 144 hpf. (E) At the peak of the Tg^BAC(pdx1:luciferase) signal, whole-body free-glucose levels start to decrease, indicating β-cell function. AU, arbitrary units. ***P≤0.001, ****P≤0.0001. Error bars represent s.e.m. Scale bars: 200 µm (A); 8 µm (B,B′); 20 µm (C).

Expression Data

Expression Detail

Antibody Labeling

Phenotype Data

Phenotype Detail

Acknowledgments

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