We investigated morphometric structure and gene expression by microarray analysis in a small diameter artery, branch of the saphenous artery (a resistance artery), in representative models of renin-angiotensin system (RAS)-dependent and glucocorticoid hypertension, using the spontaneously hypertensive rat (SHR) and adrenocorticotropic hormone (ACTH)-induced hypertensive rat, respectively.
Vascular microarray profiling in two models of hypertension identifies caveolin-1, Rgs2 and Rgs5 as antihypertensive targets.
No sample metadata fields
View SamplesEach cell type responds uniquely to stress and fractionally contributes to global and tissue-specific stress responses. Hepatocytes, liver macrophages (M), and sinusoidal endothelial cells (SEC) play functionally important and interdependent roles in adaptive processes such as wound healing, obesity, and tumor growth. Although these cell types demonstrate significant phenotypic and functional heterogeneity, their distinctions enabling disease-specific responses remain understudied. To address this, we developed a strategy for simultaneous isolation and quantification of these liver cell types based on antigenic cell surface marker expression in response to DEN and found that while there was only a marginal increase in hepatocyte number, M and SEC populations were quantitatively increased. Global gene expression profiling of hepatocytes, M and SEC identified characteristic gene fingerprints that define each cell type and their distinct physiological or oncogenic stress signatures. Integration of these cell-specific gene fingerprints with available hepatocellular carcinoma (HCC) patient microarray data demonstrates that the hepatocyte-specific response strongly correlates with the human HCC gene expression profile. Liver-specific M and SEC gene signatures demonstrate significant alterations in inflammatory and angiogenic gene regulatory pathways, which may impact the hepatocyte response to oncogenic stress. Further validation confirms alterations in components of two key pathways, AP-1 and p53, that have been previously associated with HCC onset and progression. Our data reveal unique gene expression patterns that serve as molecular fingerprints for the cell-centric responses to pathologic stimuli in the distinct microenvironment of the liver. The technical advance highlighted in this study provides an essential resource for assessing hepatic cell-specific contributions to oncogenic stress, information that could unveil previously unappreciated molecular mechanisms for the cellular crosstalk that underlies the development of hepatic cancer.
Deciphering hepatocellular responses to metabolic and oncogenic stress.
Sex, Specimen part
View SamplesThe goal of this analysis was to utilize microarray profiling to identify basal alterations in gene expression in response to TFAM depletion and mtDNA stress.
Mitochondrial DNA stress primes the antiviral innate immune response.
Specimen part
View SamplesThis SuperSeries is composed of the SubSeries listed below.
Systems biology of vaccination for seasonal influenza in humans.
Specimen part, Subject, Time
View SamplesSystems vaccinology has emerged as an interdisciplinary field that combines systems wide measurements and network and predictive modeling applied to vaccinology.
Systems biology of vaccination for seasonal influenza in humans.
Specimen part, Subject, Time
View SamplesSystems vaccinology has emerged as an interdisciplinary field that combines systems wide measurements and network and predictive modeling applied to vaccinology.
Systems biology of vaccination for seasonal influenza in humans.
Specimen part, Subject, Time
View SamplesSystems vaccinology has emerged as an interdisciplinary field that combines systems wide measurements and network and predictive modeling applied to vaccinology.
Systems biology of vaccination for seasonal influenza in humans.
Specimen part, Subject, Time
View SamplesSystems vaccinology has emerged as an interdisciplinary field that combines systems wide measurements and network and predictive modeling applied to vaccinology.
Systems biology of vaccination for seasonal influenza in humans.
Specimen part, Subject, Time
View SamplesA comparison of gene expression between control versus IPF human lung MPC using human Affy 1.0st chips.
Disruption of lineage specification in adult pulmonary mesenchymal progenitor cells promotes microvascular dysfunction.
Specimen part, Disease, Disease stage
View SamplesPRDM5 is a recently identified member of the PRDM family of proteins, which functions as a transcriptional repressor by recruiting histone methyltransferase G9A to DNA, and behaves as a putative tumor suppressor in different types of cancer.
The tumor suppressor PRDM5 regulates Wnt signaling at early stages of zebrafish development.
No sample metadata fields
View Samples