Project description:Gene expression in larval, early third instar eye-antenna discs was assesed in genotypes with Notch Gain-of-Function (UAS-Delta or UAS-Notch[intra2]) over-expression or mitochondrial COX7a Loss-of-function (UAS-COX7a-RNAi) or a combination of both (UAS-Delta, UAS-COX7a-RNAi). The analysis revealed that, despite a strong genetic interaction between Notch pathway activation and knockdown of COX7a, no transcriptional cooperation or synergy was detectable in early L3 eye-antenna discs. Rather, COX7a knockdown induced a unique transcriptional signature, which further experiments revealed to be mediated by the transcription factor ATF4.
Project description:Gene expression in larval, early third instar eye-antenna discs was assessed to reveal an ATF4 contribution to target gene induction following COX7a knockdown. As hypothesised, these COX7a-RNAi induced target genes require the transcription factor ATF4 for induction, irrespective of concomitant Notch pathway activation through Delta over-expression.
Project description:Coordinating cell proliferation and differentiation is essential during organogenesis. In Drosophila, the photoreceptor, pigment and support cells of the eye are specified in an orchestrated wave as the morphogenetic furrow passes across the eye imaginal disc. Cells anterior of the furrow are uncommitted to cell type and remain mitotically active, while most cells in the furrow arrest at G1 and adopt specified ommatidial fates. We used microarray expression analysis to monitor changes in transcription at the furrow and identified genes whose expression correlates with either proliferation or fate specification.
Project description:Wandering third instar larvae were dissected where the eye disc was separated from the antenna and brain. The tissues were dissociated into single cells and captured using Drop-seq. Single cell libraries were then generated from each cell and finally sequenced.
Project description:Wandering third instar larvae were dissected where the eye disc was separated from the antenna and brain using WT and Rbf mutants. The tissues were dissociated into single cells and captured using Drop-seq. Single cell libraries were then generated from each cell and finally sequenced.
Project description:au10-07_mpk4gof - mpk4/mpk4 gof vs mpk4/mpk4 vs col0 - Genes regulated by MPK4 pathway. - In order to study of the genes controlled by MPK4 pathway we generate mpk4 complemented lines expressing active MPK4 (MPK4 GOF). For the transcriptome analysis we compare the MPK4 GOF to mpk4/MPK4 (complemented mpk4 mutant with a wt MPK4) and to Col0. Keywords: genotype comparaison 6 dye-swap - CATMA arrays Comparisons of MPK4 GOF to mpk4/MPK4 (complemented mpk4 mutant with a wt MPK4) and to Col0.