Figure 3: dUTX is required for salivary gland cell death.
From: UTX coordinates steroid hormone-mediated autophagy and cell death
(a) Histological analysis of paraffin sections at 14 h and 24 h RPF shows intact salivary glands present in dUTX1 compared with control at 24 h RPF. Ovals indicate the position of salivary glands and fragments. Scale bar represent 50 μm. Quantification of the salivary gland phenotypic data was at 24 h RPF. (b,c) Caspase staining and activity are reduced in dUTX1 salivary glands at 14 h RPF. (b) Cleaved caspase-3 antibody (green) and Lamin antibody (red) staining are shown in control and dUTX1 salivary glands at 14 h RPF. Scale bar represents 50 μm. (c) Caspase activity was measured from 14 h RPF control and dUTX1 salivary glands using DEVD-AMC as a substrate. Data are mean from three independent experiments each using at least 20 salivary glands from control and dUTX1 for preparing cell extracts. The error bars represent s.e.m. *P-value<0.05 (Student’s t-test). (d) Autophagy puncta examined using mCherry-Atg8a (red) and nuclei stained with Hoechst (blue). Scale bar represents 100 μm. The quantitation of the mCherry-Atg8a puncta as the mean fluorescent pixel intensity per cell (control n=242, dUTX1 n=224), with error bars representing s.e.m. *P-value<0.05 (Student’s t-test).
