We sought to find molecular signatures of the SGZ cell types, and to characterize the molecular pathways and transcription factor cascades that define the neurogenic niche. We used laser capture microdissection and DNA microarrays to profile gene expression in the inner (SGZ) and outer portions of the dentate gyrus (DG). Since the vast majority of the cells in the DG are mature granule cells, we compared the expression of the inner and outer portions to reveal molecular markers for the less numerous populations of the SGZ.
Conserved molecular signatures of neurogenesis in the hippocampal subgranular zone of rodents and primates.
Sex, Specimen part
View SamplesRNA was isolated from siCTRL, siNSUN2 and ALYREF-RIP HeLa cells, and multiple mouse tissues using the TRIzol (Invitrogen) reagent by following the company manual. Approximately 2.5 µg of total RNA was then used for library preparation using a TruSeq™ RNA Sample Prep Kit v2 (Illumina, San Diego, CA, USA) according to the manufacturer’s protocol.The libraries were sequenced using HiSeq3000 (Illumina) or HiSeq2500 in paired-read mode, creating reads with a length of 101 or 125 bp. Sequencing chemistry v2 or v4 (Illumina) was used. Overall design: Examination of gene expressive levels in siCTRL, siNSUN2 and ALYREF-RIP HeLa cells, and multiple mouse tissues
5-methylcytosine promotes mRNA export - NSUN2 as the methyltransferase and ALYREF as an m<sup>5</sup>C reader.
No sample metadata fields
View SamplesGenome-wide transcriptional profiling allows characterization of the molecular underpinnings of neocortical organization, including cortical areal specialization, laminar cell type diversity and functional anatomy. Microarray analysis of individual cortical layers across sensorimotor and association cortices in rhesus macaque demonstrated robust and specific laminar and areal molecular signatures driven by differential expression of genes associated with specialized neuronal function. Gene expression corresponding with laminar architecture was generally similar across cortical areas, although genes with robust areal patterning were often highly laminar as well, and these patterns were more highly conserved between macaque and human as compared to mouse. Layer 4 of primate primary visual cortex displayed a distinct molecular signature compared to other cortical regions, a specialization not observed in mouse. Overall, transcriptome-based relationships were strongest between proximal layers in a cortical area, and between neighboring areas along the rostrocaudal axis, reflecting in vivo cortical spatial topography and therefore a developmental imprint.
Transcriptional architecture of the primate neocortex.
Sex, Specimen part, Disease
View SamplesApplied de novo assembly, both protein coding and non-coding RNAs were profiled in AFB1 induced HCC and AFB1 resistant liver sample. Compared with normal liver, the perturbation on transcriptome was revealed in multiple aspects, implying the potential mechanism of toxic resistance. Overall design: All rats were randomly divided into control and treated groups according to their weight. Then AFB1 was injected intraperitoneally to treated group in customized schedule. Biopsy was applied every 10 weeks on both groups. Tissues from rats died of HCC were reserved. All rats were sacrificed at 70th week. According to whether tumor formed, liver tissues from animals in treated group were further divided into AFB1 induced tumor sample and AFB1 resistant sample. Both samples were stored for later transcriptome analysis, as well as the normal sample from control group. RNA profiles of all 3 samples were generated by deep sequencing, using Illumina HiSeq2000 platform.
Distinct response of the hepatic transcriptome to Aflatoxin B1 induced hepatocellular carcinogenesis and resistance in rats.
No sample metadata fields
View SamplesThis SuperSeries is composed of the SubSeries listed below.
Integrated genetic approaches identify the molecular mechanisms of Sox4 in early B-cell development: intricate roles for RAG1/2 and CK1ε.
Specimen part
View SamplesOne of the main objective of this study is to identify Sox4 controlled gene networks and their roles in progenitor B cells.
Integrated genetic approaches identify the molecular mechanisms of Sox4 in early B-cell development: intricate roles for RAG1/2 and CK1ε.
Specimen part
View SamplesThe growth and fruit quality of grapevine are widely affected by abnormal climatic conditions such as water deficit. But how grapevine responds to drought stress is still largely unknown. Here we found that VaNAC26, a member of NAC transcription factor family, was up-regulated dramatically during cold, drought and salinity treatments in Vitis amurensis, a cold and drought-hardiness wild Vitis species. Ectopic overexpression of VaNAC26 enhanced the drought and salt tolerances in transgenic Arabidopsis. Higher activities of antioxidant enzymes and the lower concentration of H2O2 and O2- were found in VaNAC26-OE lines than in wild type plants under drought stress. These results indicate that the reactive oxygen species (ROS) scavenging was enhanced by VaNAC26 in transgenic lines. Microarray based transcriptome analysis reveals that genes related to jasmonic acid (JA) synthesis and signaling were up-regulated in VaNAC26-OE lines under both normal and drought conditions. VaNAC26 showed a specific binding ability on NACRS motif, which was broadly existent in the promoter regions of up-regulated genes in transgenic lines. Endogenous JA content was found increased obviously in VaNAC26-OE-2/3 lines. Our data suggests that VaNAC26 responds to abiotic stresses and may enhance the drought tolerance by transcriptional regulation of JA synthesis in Arabidopsis.
Expression of Vitis amurensis NAC26 in Arabidopsis enhances drought tolerance by modulating jasmonic acid synthesis.
Specimen part
View SamplesWe evaluated the transcriptome changes induced by infection with Salmonella (20 hpi, MOI 100). Overall design: Transcriptmic profiles of HeLa cells infected with Salmonella Typhimurium were generated by deep sequencing, using Illumina HiSeq 2000.
Functional high-throughput screening identifies the miR-15 microRNA family as cellular restriction factors for Salmonella infection.
No sample metadata fields
View SamplesWe identified miRNAs differentially regulated upon Salmonella infection by comparative deep-sequencing analysis of cDNA libraries prepared from the small RNA population (10–29 nt) of HeLa cells infected with Salmonella (20 hpi) and mock-treated cells. Considering that at a MOI of 25 Salmonella is internalized in only 10-15% of the HeLa cells, we separated the fraction of cells which had internalized Salmonella (Salmonella+) from the bystander fraction (Salmonella-) by fluorescence-activated cell sorting (FACS), and extended the analysis of miRNA changes to these samples. Interestingly, we observed that Salmonella infection induces a significant decrease in the expression of all the detected members of the miR-15 family Overall design: miRNA profiles of HeLa cells infected with Salmonella Typhimurium were generated by deep sequencing, using Illumina HiSeq2000.
Functional high-throughput screening identifies the miR-15 microRNA family as cellular restriction factors for Salmonella infection.
No sample metadata fields
View SamplesProper expression of key reproductive hormones from gonadotrope cells of the pituitary is required for reproduction. We performed RNAseq of 3 maturaton staged gonadotrope cell lines, a thyroptrope cell line and NIH-3T3 cells to establish the timing and expression levels of genes involved in gonadotrope maturation. Overall design: Rna-seq of 3 mouse gonadotrope cell lines, 1 mouse thyrotrope cell line and NIH-3T3 cell line
Chromatin status and transcription factor binding to gonadotropin promoters in gonadotrope cell lines.
Cell line, Subject
View Samples