Gene expression was evaluated in 9 appendix samples removed from patients who went to the operating room with the diagnosis of acute appendicitis and 4 samples removed for non-inflammatory reasons.
Acute appendicitis is characterized by a uniform and highly selective pattern of inflammatory gene expression.
No sample metadata fields
View SamplesXBP1 is the transcriptino factor that is activated by the ER stress. XBP1 is known to induce the ER dexpansion and increase the expression of the ER chaperone genes to prtect the cell from the ER stress. We generated a mouse strain that lacked XBP1 specifically in the mouse intestine by breeding the XBP1flox mice with Villin-cre mice. Here we examined genes that are differentially expressed between WT and XBP1 KO mouse intestine to identify genes that are downstream of XBP1.
XBP1 links ER stress to intestinal inflammation and confers genetic risk for human inflammatory bowel disease.
No sample metadata fields
View SamplesThe effects of constitutively active Hypoxia Inducible Factor (HIF) and inactivated von Hippel-Lindau tumor suppressor gene product (pVHL) were examined in a mouse model. Conditionally expressed, constitutively active HIF-1a and HIF-2a were compared with inactivated pVHL.
Failure to prolyl hydroxylate hypoxia-inducible factor alpha phenocopies VHL inactivation in vivo.
Specimen part
View SamplesIt is unclear how nanosecond electrical pulses affect gene expression.
Evaluation of the Genetic Response of U937 and Jurkat Cells to 10-Nanosecond Electrical Pulses (nsEP).
Specimen part, Cell line
View SamplesIt is unclear how nanosecond electrical pulses affect gene expression.
Evaluation of the Genetic Response of U937 and Jurkat Cells to 10-Nanosecond Electrical Pulses (nsEP).
Specimen part, Cell line
View SamplesDiagnosis of influenza A infection is currently based on clinical symptoms and pathogen detection. Use of host peripheral blood gene expression data to classify individuals with influenza A virus infection represents a novel approach to infection diagnosis
A host transcriptional signature for presymptomatic detection of infection in humans exposed to influenza H1N1 or H3N2.
Specimen part, Subject, Time
View SamplesStaphylococcus aureus causes a spectrum of human infection. Diagnostic delays and uncertainty lead to treatment delays and inappropriate antibiotic use. A growing literature suggests the hosts inflammatory response to the pathogen represents a potential tool to improve upon current diagnostics. The hypothesis of this study is that the host responds differently to S. aureus than to E. coli infection in a quantifiable way, providing a new diagnostic avenue. This study uses Bayesian sparse factor modeling and penalized binary regression to define peripheral blood gene-expression classifiers of murine and human S. aureus infection. The murine-derived classifier distinguished S. aureus infection from healthy controls and Escherichia coli-infected mice across a range of conditions (mouse and bacterial strain, time post infection) and was validated in outbred mice (AUC>0.97). A S. aureus classifier derived from a cohort of 95 human subjects distinguished S. aureus blood stream infection (BSI) from healthy subjects (AUC 0.99) and E. coli BSI (AUC 0.82). Murine and human responses to S. aureus infection share common biological pathways, allowing the murine model to classify S. aureus BSI in humans (AUC 0.84). Both murine and human S. aureus classifiers were validated in an independent human cohort (AUC 0.95 and 0.94, respectively). The approach described here lends insight into the conserved and disparate pathways utilized by mice and humans in response to these infections. Furthermore, this study advances our understanding of S. aureus infection; the host response to it; and identifies new diagnostic and therapeutic avenues.
Gene expression-based classifiers identify Staphylococcus aureus infection in mice and humans.
Race
View SamplesThere are significant differences in the expression of genes that regulate metabolic pathways in HCC as compared to Cirrhosis or non-tumor liver tissues. These charcteristic pathways can be exploited for metabolic imaging biomarkers of HCC.
The aspartate metabolism pathway is differentiable in human hepatocellular carcinoma: transcriptomics and (13) C-isotope based metabolomics.
Sex, Age, Specimen part, Disease, Disease stage
View SamplesA pressing clinical challenge is identifying the etiologic basis of acute respiratory illness. Without reliable diagnostics, the uncertainty associated with this clinical entity leads to a significant, inappropriate use of antibacterials. Use of host peripheral blood gene expression data to classify individuals with bacterial infection, viral infection, or non-infection represents a complementary diagnostic approach.
Host gene expression classifiers diagnose acute respiratory illness etiology.
No sample metadata fields
View SamplesTOX is selectively expressed in tumor-infiltrating CD8 T cells however the role of TOX in peripheral CD8 T cells is not known. The two goals of this study are to elucidate transcriptional changes between TOX-sufficient and TOX-deficient tumor infiltrating CD8 T cells and to elucidate the molecular program induced by TOX overexpression in peripheral CD8 T cells. Overall design: CD8 T cells were sorted by flow cytometry and RNA-seq was performed.
TOX is a critical regulator of tumour-specific T cell differentiation.
Cell line, Subject
View Samples