Angiotensin II (Ang-II) regulates adrenal steroid production and gene transcription through several signaling pathways. Changes in gene transcription occur within minutes after Ang-II stimulation, causing an acute increase in aldosterone production and subsequent increase in the overall capacity to produce aldosterone. Our goal was to compare the Ang-II regulation of early gene expression and confirm the upregulation of selected genes using quantitative real-time RT-PCR (qPCR) across three species: human, bovine, and rat.
Angiotensin-II acute regulation of rapid response genes in human, bovine, and rat adrenocortical cells.
No sample metadata fields
View SamplesNFX1-91, a novel E6 cellular downstream target, functions as a transcriptional regulator and is involved in repressing hTERT expression. Other functions and downstream targets regulated by NFX1-91 were not well understood. We used microarrays to determine gene expression deregulated when NFX1-91 was knocked down.
NFX1 plays a role in human papillomavirus type 16 E6 activation of NFkappaB activity.
Cell line
View SamplesThe CMVpp65 protein contains 2 bipartite nuclear localization signals (NLS) at 415-438aa and 537-561aa near the carboxy terminus of CMVpp65 and a phosphate binding site related to kinase activity at lysine-436. A mutation of pp65 having K436N (CMVpp65mII) and further deletion of aa537-561 resulted in a novel protein (pp65mIINLSKO) that is kinase-less and has markedly reduced nuclear localization. The purpose of this report was to study the biologic characterization of this protein and its immunogenicity compared to native pp65.Using RNA microarray analysis, expression of the CMVpp65mIINLSKO had less effect on cell cycle pathways than did the native CMVpp65 and a greater effect on cell surface signalling pathways involving immune activity. It is concluded that the removal of the primary NLS motif from pp65 does not impair its immunogenicity and may actually be advantageous in the design of a vaccine.
Biologic and immunologic effects of knockout of human cytomegalovirus pp65 nuclear localization signal.
No sample metadata fields
View SamplesThe use of low quality RNA samples in whole-genome gene expression profiling remains controversial. It is unclear if transcript degradation in low quality RNA samples occurs uniformly, in which case the effects of degradation can be normalized, or whether different transcripts are degraded at different rates, potentially biasing measurements of expression levels. This concern has rendered the use of low quality RNA samples in whole-genome expression profiling problematic. Yet, low quality samples are at times the sole means of addressing specific questions – e.g., samples collected in the course of fieldwork.
RNA-seq: impact of RNA degradation on transcript quantification.
No sample metadata fields
View SamplesFunctional discrimination between normal centroblast and centrocyte obtained from human inflamed tonsils after cell sorting.
CXCR4 expression functionally discriminates centroblasts versus centrocytes within human germinal center B cells.
Specimen part
View SamplesTotal RNA from three replicate cultures of wild-type and mutant strains was isolated and the expression profiles were determined using Affymetrix arrays. Comparisons between the sample groups allow the identification of genes regulated by histone H2B K111A mutant.
Novel functional residues in the core domain of histone H2B regulate yeast gene expression and silencing and affect the response to DNA damage.
No sample metadata fields
View SamplesTotal RNA from three replicate cultures of wild-type and mutant strains was isolated and the expression profiles were determined using Affymetrix arrays. Comparisons between the sample groups allow the identification of genes regulated by histone H2B R102A mutant.
Novel functional residues in the core domain of histone H2B regulate yeast gene expression and silencing and affect the response to DNA damage.
No sample metadata fields
View SamplesThe goal of the study was to determine the effect of lentiviral- mediated overexpression of miR-495 (LV-miR-495) on the levels of gene expression in the nuclues accumbens of rats relative to control rats injected with the empty vector (LV-GFP).
In silico identification and in vivo validation of miR-495 as a novel regulator of motivation for cocaine that targets multiple addiction-related networks in the nucleus accumbens.
No sample metadata fields
View SamplesAbout 15% of the TG26 mice develop lymphoma. HIV protein expression is observed, particularly the protein p17/Matrix. Total cellular RNA from spleen and lymph nodes from 3 groups of animals: FVB/N controls (n=3), Tg26 asymptomatic (n=6), and Tg26 with lymphoma (n=6). Results provide insights into the gene expression program in animals with lymphoma.
Expression of HIV-1 matrix protein p17 and association with B-cell lymphoma in HIV-1 transgenic mice.
Specimen part, Disease
View SamplesTo explore events that govern the differentiation of human nave B cells (NBCs) into memory B cells and plasma cells (PCs), we designed an in vitro 2-step culture model leading non-switched NBC precursors to differentiate into two cell compartments: CD20loCD38hi and CD20+CD38+.
IL-2 requirement for human plasma cell generation: coupling differentiation and proliferation by enhancing MAPK-ERK signaling.
Specimen part, Subject, Time
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