Project description:Even though proteins are produced from mRNA, the correlation between mRNA levels and protein abundances is moderate in most studies, occasionally attributed to complex post-transcriptional regulation. To address this, we generated a paired transcriptome/proteome time course dataset with 14 time points during Drosophila embryogenesis. Despite a limited mRNA-protein correlation (ρ = 0.54), mathematical models describing protein translation and degradation explain 84% of protein time-courses based on the measured mRNA dynamics without assuming complex post-transcriptional regulation, and allow for classification of most proteins into four distinct regulatory scenarios. By performing an in-depth characterization of the putatively post-transcriptionally regulated genes, we postulated that the RNA-binding protein Hrb98DE is involved in post-transcriptional control of sugar metabolism in early embryogenesis and partially validated this hypothesis using Hrb98DE knockdown. In summary, we present a systems biology framework for the identification of post-transcriptional gene regulation for large-scale time-resolved transcriptome and proteome data.
Project description:Dichaete is a developmentally important transcription factor, known to be involved in basic biological processes including segmentation and nervous system development among others. The aim of this experiment was to gain further insight into the role of Dichaete during early embryogenesis, by looking at the disruption of gene expression in Dichaete mutants.
Project description:Dichaete is a developmentally important transcription factor, known to be involved in basic biological processes including segmentation and nervous system development among others. The aim of this experiment was to gain further insight into the role of Dichaete during early embryogenesis, by finding out where in the genome it's binding using the DamID technique.
Project description:Proteome and transcriptome often show poor correlation, hindering the system-wide analysis of post-transcriptional regulation. Here, the authors study proteome and transcriptome dynamics during Drosophila embryogenesis and present basic mathematical models describing the temporal regulation of most protein-RNA pairs.
Project description:Proteome and transcriptome often show poor correlation, hindering the system-wide analysis of post-transcriptional regulation. Here, the authors study proteome and transcriptome dynamics during Drosophila embryogenesis and present basic mathematical models describing the temporal regulation of most protein-RNA pairs.
Project description:Dichaete is a developmentally important transcription factor, known to be involved in basic biological processes including segmentation and nervous system development among others. The aim of this experiment was to gain further insight into the role of Dichaete during early embryogenesis, by looking at the disruption of gene expression in Dichaete mutants. Stage 10-11 embryos (5 and 7.5 hours after egg laying) from a cross between Dr72/TM3, twi-GAL4 UAS-Gfp Dr513/TM3, twi-GAL4 UAS-Gfp, were hand picked under a fluorescence dissecting microscope. GFP negative homozygous Dichaete mutant embryos and their heterozygous single GFP positive siblings were collected and approximately 150 embryos per sample were stored frozen in Trizol
