ABSTRACT: Time course of early development of peripheral nerve, from embryonic day 9.5 to postnatal day 0. Origin of samples: mouse embryos expressing green fluorescent protein (GFP) in neural crest stem cells and later glial cells under the control of the proteolipid protein gene (Plp) promoter. At E9.5 the trunk region was dissected out. At E12, E14, E16, E18 and P0 the sciatic nerve was taken. GFP-expressing cells were isolated by FACS sorting. Three or 4 separate batches of embryos analyzed at each stage. Keywords: time-course
Project description:Time course of early development of peripheral nerve, from embryonic day 9.5 to postnatal day 0. Origin of samples: mouse embryos expressing green fluorescent protein (GFP) in neural crest stem cells and later glial cells under the control of the proteolipid protein gene (Plp) promoter. At E9.5 the trunk region was dissected out. At E12, E14, E16, E18 and P0 the sciatic nerve was taken. GFP-expressing cells were isolated by FACS sorting. Three or 4 separate batches of embryos analyzed at each stage.
Project description:We collected dorsal root ganglion (DRG), sciatic nerve (SN) and cochlea tissues from each E14, E18 and P14 plp-GFP+ mice. This allowed for a comparison of plp-GFP+ glia from lumbar (DRG+SN) and cochlea tissues within the same mice. The transcriptional composition of all samples was assessed using single-cell RNA-seq (scRNA-seq).
Project description:Samples E12/E13/E14/E16/E18: We aims to screen out different gene expression profile in Embryo kidney on different gestation stages of the Notch signaling pathway Results from the various study components can help to screening important candidate genes during embryonic kidney development. Keywords: Embryo kidney, Development, Notch signaling pathway, Oligonucleotide Array Sequence Analysis
Project description:The sense of hearing depends on the faithful transmission of sound information from the ear to the brain by spiral ganglion (SG) neurons. However, how SG neurons develop the connections and properties that underlie auditory processing is largely unknown. We catalogued gene expression in mouse SG neurons at six developmental stages, ranging from embryonic day 12 (E12), when SG neurons first extend projections, up until postnatal day 15 (P15), after the onset of hearing. For comparison, we also analyzed the closely-related vestibular ganglion (VG) at the same time points. To identify genes involved in SG axon guidance and branching, target selection, synaptogenesis, synaptic refinement, and synaptic function, we collected SG at E12 and E13, E16, P0, P6, and P15. We also collected VG at the same time points. For E12 and E13 time points, SG and VG were microdissected from Rnx-cre; Z/EG embryos, which express GFP in the VG. E16-P15 VG was also isolated by microdissection from Rnx-cre; Z/EG animals. E16-P15 SG neurons were isolated by FACS sorting dissociated cochlea from Mafb-GFP animals.
Project description:Samples E12/E13/E14/E16/E18: We aims to screen out different gene expression profile in Embryo kidney on different gestation stages of the Notch signaling pathway Results from the various study components can help to screening important candidate genes during embryonic kidney development. Keywords: Embryo kidney, Development, Notch signaling pathway, Oligonucleotide Array Sequence Analysis The Oligo GEArray Assay comprises various components: RNA isolation,Assesing RNA yield and quality,cRNA labeling and synthesis,Hybridization,Chemiluminescent detection and Image acquisition and data analysis. Samples E12: This study has been accomplished with Embryo kidney on gestation 12, 3 techinical replicates. Samples E13: This study has been accomplished with Embryo kidney on gestation 13, 3 techinical replicates. Samples E14: This study has been accomplished with Embryo kidney on gestation 14, 2 techinical replicates. Samples E16: This study has been accomplished with 1Embryo kidney on gestation 16, 2 techinical replicates. Samples E18: This study has been accomplished with Embryo kidney on gestation 18, 2 techinical replicates.
Project description:The chicken embryo (Gallus gallus) is a classic model system for studying developmental biology. During chick development, embryonic day 8 (E8) retina are packed with multipotent neuronal precursors on the cusp of differentiation into all retinal cell types. By E18 the retina is nearly fully mature with all major retinal cell types differentiated and expressing cell type-specific genes. Whole retina were harvested from embryonic day 8 (E8), E16, and E18 developing chicken embryos. Whole cornea were also collected from E18 embryos as a reference tissue. Duplicates were obtained for each time point and total RNA was extracted from samples using a Qiagen AllPrep Mini Kit. To characterize differential gene expression in these tissues, Illumina stranded TrueSeq RNA-Seq libraries were prepared from total RNA and 125 PE sequencing reads were obtained. These data will be used to characterize retina-specific patters of gene expression as well as global changes in gene expression between critical developmental time points in the chicken retina.
Project description:Examine the global gene expression changes from E16 (day 16.5) to E19 (day 18.5) in fetal SD rat skin samples E19 samples were renamed as E18 samples in the relative manuscript
Project description:We established a new genetically engineered mouse (GEM) model of malignant peripheral nerve sheath tumors (MPNST) based on postnatal deletion of a Nf1;Trp53 cis-conditional allele by the tamoxifen-inducible Plp-CreER (NP-Plp). We also generated two Lats1;2 conditional knockout models by using Nestin-Cre (Lats-Nes) and Plp-CreER (Lats-Plp), both of which also develop tumors similar to MPNST (GEM-PNST). To evaluate these models, transcriptome analyses were performed to compare these models and with human MPNST, plexiform neurofibromas (PNF), and neurofibromas (NF).
Project description:Approximately 25% of all preterm births are due to preterm premature rupture of membranes. Mice deficient in proteoglycans biglycan (Bgn) and decorin (Dcn) display abnormal fetal membranes and increased incidence of preterm birth. We conducted RNA-Seq to profile fetal membranes and identify molecular pathways that may lead to preterm birth in double knockout (DKO) mice (Bgn −/−; Dcn −/− ) compared to wild-type (WT) at two different gestational stages, E12 and E18 (n=3 in each group). 3264 transcripts were differentially regulated in E18 DKO vs. WT fetal membranes, and 96 transcripts differentially regulated in E12 DKO vs. WT fetal membranes (FDR<0.05, log 2 FC≥1). Differentially regulated transcripts in E18 DKO fetal membranes were significantly enriched for genes involved in cell cycle regulation, extracellular matrix-receptor interaction, and the complement cascade. 50 transcripts involved in the cell cycle were altered in E18 DKO fetal membranes (40↓, 10↑, FDR<0.05), including p21 and p57 (↑), and Tgfb2, Smad3, CycA, Cdk1, and Cdk2(↓). Thirty-one transcripts involved in the complement cascade were altered (11↓, 20↑, FDR<0.05) in E18 DKO fetal membranes, including C1q, C2, and C3 (↑). Differentially expressed genes in the top three molecular pathways (1) showed evidence of negative or purifying selection, and (2) were significantly enriched (Z-score>10) for transcription factor binding sites for Nr2f1 at E18. We propose that in DKO mice, cell cycle arrest results in lack of cell proliferation in fetal membranes, inability to contain the growing fetus, and preterm birth.