Project description:The evolution of gene expression programs underlying the development of vertebrates remains poorly characterized. Here, we present a comprehensive proteome atlas of the model chordate Ciona, covering eight developmental stages and ~7k translated genes, accompanied by a multi-omics analysis of co-evolution with the vertebrate Xenopus. Quantitative proteome comparisons argue against the widely held hourglass model, based solely on transcriptomic profiles, whereby peak conservation is observed during mid-developmental stages. Our analysis reveals maximal divergence at these stages, particularly gastrulation and neurulation. Together, our work provides a valuable resource for evaluating conservation and divergence of multi-omics profiles underlying the diversification of vertebrates.
Project description:The evolution of gene expression programs underlying the development of vertebrates remains poorly characterized. Here, we present a comprehensive proteome atlas of the model chordate Ciona, covering eight developmental stages and ∼7,000 translated genes, accompanied by a multi-omics analysis of co-evolution with the vertebrate Xenopus. Quantitative proteome comparisons argue against the widely held hourglass model, based solely on transcriptomic profiles, whereby peak conservation is observed during mid-developmental stages. Our analysis reveals maximal divergence at these stages, particularly gastrulation and neurulation. Together, our work provides a valuable resource for evaluating conservation and divergence of multi-omics profiles underlying the diversification of vertebrates.
Project description:Using nanoproteomics,we profiled the dynamics of proteome and found potentially important proteins in Arabidopsis thaliana early embryogenesis. Combining with RNAs-seq, we unveiled the relationship of protein and mRNA during Arabidopsis embryogenesis.
Project description:We present a comprehensive proteome atlas of the model chordate Ciona, covering eight developmental stages and ~7k translated genes as well as a deep quantitative atlas of maternal proteins found in the Ciona egg.
Project description:Progressive unfolding of gene expression cascades underlies diverse embryonic lineage development. Here, we report a single-cell RNA sequencing analysis of the complete and invariant embryonic cell lineage of the tunicate Ciona savignyi from fertilization to the onset of gastrulation. We reconstructed a developmental landscape of 47 cell types over eight cell cycles in the wild-type embryo and identified eight fate transformations upon fibroblast growth factor (FGF) inhibition. For most FGF-dependent asymmetric cell divisions, the bipotent mother cell displays the gene signature of the default daughter fate. In convergent differentiation of the two notochord lineages, we identified additional gene pathways parallel to the master regulator T/Brachyury. Last, we showed that the defined Ciona cell types can be matched to E6.5-E8.5 stage mouse cell types and display conserved expression of limited number of transcription factors. This study provides a high-resolution single-cell dataset to understand chordate early embryogenesis and cell lineage differentiation.
Project description:In this project, we profiled the dynamics of proteome during Arabidopsis early embryogenesis using nanoproteomics. In addition, we identified some proteins which may be important during this process. Combining with RNA-seq, we unveiled the relationship between RNA and proteins during Arabidopsis early embryogenesis.
Project description:This SuperSeries is composed of the following subset Series: GSE17980: Genome-Wide Dynamics of Replication Timing Revealed by In Vitro Models of Mouse Embryogenesis (Expression) GSE17983: Genome-Wide Dynamics of Replication Timing Revealed by In Vitro Models of Mouse Embryogenesis (WG_CGH; Replication Timing) GSE17980 (Expression): 8 cell lines, with a total of 14 individual replicates (i.e. 6 in duplicates, 2 in single replicates) GSE17983 (WG_CGH; Replication Timing): 22 cell lines, with a total of 36 individual replicates (i.e. 14 in duplicates, 8 in single replicates)