Hippocamus and amygdala expression was examined in nave, conditioned stimulus exposed, and fear conditioned mice 30 minutes after behavioral manipulation
Differential transcriptional response to nonassociative and associative components of classical fear conditioning in the amygdala and hippocampus.
No sample metadata fields
View SamplesSteer mesenteric fat transcriptome.
Relationships between the genes expressed in the mesenteric adipose tissue of beef cattle and feed intake and gain.
Specimen part
View SamplesThe most recurrently mutated oncogene in T-cell acute lymphoblastic leukemia (T-ALL) is NOTCH1. The core Notch complex consists of an ICN protein, a Maml cofactor, and the DNA binding factor Rbpj. The known direct cofactors of Notch appear to act nonselectively, homogeneously driving Notch gene expression functions. It is unclear whether there are direct cofactors of Notch that act selectively and heterogeneously regulate ICN. We discovered that Zmiz1, a Protein Inhibitor of Activated STAT (PIAS)-like coactivator, directly bound ICN1. ChIP-Seq showed that Zmiz1 selectively co-bound only a subset of Notch-regulated enhancers. This led to hypothesize that Zmiz1 regulates only a subset of Notch1 target genes. To investigate this, we performed RNA-Seq on four 8946 cell linesin which L1601P (activated Notch1) or Zmiz1 were expressed alone or in combination. Zmiz1 induced ~10% of Notch target genes. The Notch target gene that was most strongly induced by Zmiz1 was Myc. Our data suggest that Zmiz1 selectively amplifies a subset of Notch target genes with strong amplification of Myc. Overall design: RNA-Seq in a murine T-ALL cell line
The PIAS-like Coactivator Zmiz1 Is a Direct and Selective Cofactor of Notch1 in T Cell Development and Leukemia.
No sample metadata fields
View SamplesWe report a genome-wide survey of early responses of the mouse heart transcriptome to acute myocardial infarction (AMI). For three regions of the left ventricle (LV), namely ischemic/infarcted tissue (IF), the surviving LV free wall (FW) and the interventricular septum (IVS), 36,899 transcripts were assayed at six time points from 15 min to 48 h post-AMI in both AMI and sham surgery mice. For each transcript, temporal expression patterns were systematically compared between AMI and sham groups, which identified 515 AMI-responsive genes in IF tissue, 35 in the FW, 7 in the IVS, with three genes induced in all three regions. Using the literature, we assigned functional annotations to all 519 nonredundant AMI-induced genes and present two testable models for central signaling pathways induced early post-AMI. First, the early induction of 15 genes involved in assembly and activation of the activator protein-1 (AP-1) family of transcription factors implicates AP-1 as a dominant regulator of earliest post-ischemic molecular events. Second, dramatic increases in transcripts for arginase 1 (ARG1), the enzymes of polyamine biosynthesis and protein inhibitor of nitric oxide synthase (NOS) activity indicates that NO production may be regulated, in part, by inhibition of NOS and coordinate depletion of the NOS substrate, L-arginine. ARG1 was the single most highly induced transcript in the database (121-fold in IF region) and its induction in heart has not been previously reported.
Earliest changes in the left ventricular transcriptome postmyocardial infarction.
No sample metadata fields
View SamplesRNA sequencing (RNA-Seq) was performed on rumen papillae from 16 steers with variation in gain and feed intake. Overall design: Sixteen rumen papillae samples were sequenced by Cofactor Genomics (St.Louis, MO).
Transcriptome differences in the rumen of beef steers with variation in feed intake and gain.
Specimen part, Subject
View SamplesThis SuperSeries is composed of the SubSeries listed below.
Combinatorial ETS1-dependent control of oncogenic NOTCH1 enhancers in T-cell leukemia.
Sex, Specimen part, Disease, Cell line
View SamplesTo formally address the biological activity of ETS1 in vitro, we measured the transcriptional effect of ETS1 knock down by transducing HPB-ALL leukemia cell lines with a plKO - shETS1 and plko shLUC control. Samples were hybridized to Affymetrix Human Genome U133 Plus 2.0 arrays. Log2 abundance estimates were obtained using gcrma package of Bioconductor, which is a version of the Robust Multi-Array Average (RMA) algorithm. We provide a supplementary file with gene annotation, which performs a two-sample T-test and computes an average fold-change.
Combinatorial ETS1-dependent control of oncogenic NOTCH1 enhancers in T-cell leukemia.
Sex, Cell line
View SamplesSteer spleen transcriptome
Profile of the Spleen Transcriptome in Beef Steers with Variation in Gain and Feed Intake.
Specimen part
View SamplesThis SuperSeries is composed of the SubSeries listed below.
Protection afforded by an HIV vaccine candidate in macaques depends on the dose of SIVmac251 at challenge exposure.
Specimen part
View SamplesThe SIVmac251 macaque model has been used to evaluate the efficacy of vaccine for HIV. Exposure of macaques to a single high dose of SIVmac251 results in transmission of multiple viral variants, which contrasts the few HIV variants typically transmitted in humans. In here, we investigated whether the dose of SIVmac251 challenge affected vaccination efficacy and found that exposure of the immunized macaques to single high dose of SIVmac251 resulted in no vaccine efficacy, whereas exposure to a tenfold lower dose resulted in protection from SIVmac251 acquisition and protection from disease in animals that become infected. The dose of challenge did not affect the expression of inflammatory genes in the gut in acute infection, but at set point, a significant down regulation of interferon responsive genes and up regulation of genes involved in B and T-cell responses, was observed only in vaccinated animals exposed to a lower dose of SIVmac251. Accordingly, in these animals, we also found a significant correlation with vaccine induced T-cell responses and protection from disease. These data demonstrate that the evaluation of the efficacy of vaccine candidates for HIV relies on accurate modeling in macaques to better mimic HIV transmission to humans.
Protection afforded by an HIV vaccine candidate in macaques depends on the dose of SIVmac251 at challenge exposure.
Specimen part
View Samples