Figure EV4. Disruption of the proteasome but not lysosomes increases Hdc levels in the retina.
(A) QPCR comparison of mRNA levels of truncated Hdc. Total RNA was extracted from heads of Hdc-F (trp-Hdc-mCherry), Hdc-dN (trp-Hdc-dN-mCherry), emc5-Hdc (trp-emc5-Hdc-mCherry), and Syt1-Hdc (trp-Syt1-Hdc-mCherry) flies. A primer pair against mCherry sequences was used for QPCR, and results were normalized to rp49. Hdc-F vs Hdc-dN p = 0.0854, Hdc-F vs emc5-Hdc p = 0.0504, Hdc-F vs Syt1-Hdc p = 0.0557. Dunnett’s one-way ANOVA, n = 3, mean ± sd, ns not significant. (B) Head horizontal sections of trp-Hdc-mCherry flies expressing GFPRNAi (GMR>GFPRNAi, trp-Hdc-mCherry GMR-Gal4/UAS-GFPRNAi), prosα5RNAi (GMR>prosα5RNAi, trp-Hdc-mCherry GMR-Gal4/UAS-prosα5RNAi), and atg7RNAi (GMR>atg7RNAi, trp-Hdc-mCherry GMR-Gal4/UAS-atg7RNAi) were labeled with mCherry (red) and LOVIT (green) antibodies. Scale bars, 20 μm. (C) Quantification of Hdc-mCherry fluorescence ratio between lamina and retina. Three fly head sections were used for quantification. ctr vs prosα5RNAi ****p < 0.0001, ctr vs atg7RNAi p = 0.9986. Dunnett’s one-way ANOVA, mean ± sd, ns not significant.
