Pharmacological and gene ablation studies have demonstrated a crucial role of the cardiac natriuretic peptides (NP) hormones ANF and BNP in the maintenance of cardiovascular homeostasis. In addition, hypertension and chronic congestive heart failure are clinical entities that may be regarded as states of relative NP deficiency. Hence the study of the function of the endocrine heart is highly relevant.
Transcriptional analysis of the mammalian heart with special reference to its endocrine function.
Sex, Specimen part
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Ras dexamethasone-induced protein 1 is a modulator of hormone secretion in the volume overloaded heart.
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View SamplesPharmacological and gene ablation studies have demonstrated a crucial role of the caridac natriuretic peptides (NP) hormones ANF and BNP in the maintenance of cardiovascular homeostasis. Considerable effort has been focused on the elucidation of the mechanistic underlying increased atrial ANF and BNP expression and secretion. These investigations are important because under chronic congestive heart failure, the secretion of NPs although increased and beneficial, is relatively insufficient as demonstrated by the fact that patients benefit form the unloading of the heart induced by therapeutic administration of either ANF or BNP.
Ras dexamethasone-induced protein 1 is a modulator of hormone secretion in the volume overloaded heart.
No sample metadata fields
View SamplesPharmacological and gene ablation studies have demonstrated a crucial role of the caridac natriuretic peptides (NP) hormones ANF and BNP in the maintenance of cardiovascular homeostasis. Considerable effort has been focused on the elucidation of the mechanistic underlying increased atrial ANF and BNP expression and secretion. These investigations are important because under chronic congestive heart failure, the secretion of NPs although increased and beneficial, is relatively insufficient as demonstrated by the fact that patients benefit form the unloading of the heart induced by therapeutic administration of either ANF or BNP.
Ras dexamethasone-induced protein 1 is a modulator of hormone secretion in the volume overloaded heart.
No sample metadata fields
View Samplesto study the proliferation of PERK knockout mice islets.
PERK EIF2AK3 control of pancreatic beta cell differentiation and proliferation is required for postnatal glucose homeostasis.
Sex
View SamplesWe hypothesize that gene expression in the cigarette smoke (CS) exposed neonatal lung and age-matched controls will be divergent. CS exposed lung will have divergence of immune response genes and structural genes. The lungs of (6) 2 week old neonatal mice exposed to 2 weeks of CS were compared to the lung of (4) 2 week old age-matched control mice. We utilized microarray analysis to examine transcriptional differences between smoke exposed neonatal lung and age-matched controls.
Impaired lung homeostasis in neonatal mice exposed to cigarette smoke.
No sample metadata fields
View SamplesTo identify genes dysregulated in bipolar disorder (BD1) we carried out global gene expression profiling using whole-genome microarrays. To minimize genetic variation in gene expression levels between cases and controls we compared expression profiles in lymphoblastoid cell lines from monozygotic twin pairs discordant for the disease. We identified 82 genes that were differentially expressed by 1.3-fold in 3 BD1 cases compared to their co-twins, and which were statistically (p 0.05) differentially expressed between the groups of BD1 cases and controls. Using qRT-PCR we confirmed the differential expression of some of these genes, including: KCNK1, MAL, PFN2, TCF7, PGK1, and PI4KCB, in at least 2 of the twin pairs. In contrast to the findings of a previous study by Kakiuchi and colleagues with similar discordant BD1 twin design1 our data do not support the dysregulation of XBP1 and HSPA5. From pathway and gene ontology analysis we identified up-regulation of the WNT signalling pathway and the biological process of apoptosis. The differentially regulated genes and pathways identified in this study may provide insights into the biology of BD1.
Expression profiling in monozygotic twins discordant for bipolar disorder reveals dysregulation of the WNT signalling pathway.
Sex
View SamplesOn the basis of the cell-surface molecule expression, CD16+ monocytes are likely comprised of distinct subpopulations of monocytes rather than a continuum of CD14+ monocytes with differing levels of cell activation. To better study this, we used gene array analysis that compared overall gene expression profiles of CD16+ subpopulations (CD14+CD16+ and CD16+) with that of CD14+CD16-. Gene expression in three FACS-sorted monocyte subsets was assessed by Affymetrix rhesus macaque oligonucleotide gene arrays that contain 52,024 probe sets covering 47,000 monkey genes. There were 29,361 probe sets that expressed in at least one subpopulation (raw array signal intensity > 32). Raw data were processed using robust multi-array average. To identify the most strongly, differentially expressed genes in each subpopulation, we only selected transcripts with consistently greater than four-fold difference (P < .05). In comparison to CD14+CD16- monocyte subset, a large number of genes (9098/29361, 30.9%) were differentially expressed in both CD14+CD16+ and CD16+ subsets: 1999 genes down-regulated; and 7099 genes up-regulated. Altogether, we observed large-scale gene expression differences between the CD14+CD16- subset and the two CD16+ subsets (CD14+CD16+ and CD16+), demonstrating transcriptional heterogeneity. The differential gene expression between CD16- and CD16+ monocytes underscore the fundamental differences between these cells.
Monocyte heterogeneity underlying phenotypic changes in monocytes according to SIV disease stage.
Specimen part
View SamplesWe report genome-wide expression changes that occur in mouse bone marrow-derived mesenchymal stem cells treated in triplicate for 24 hours with or without Cytochalasin D and/or CK666. mRNA-Seq analysis shows that both cell surface and the nucleus undergo phenotypic changes. Cytochalasin D enhanced expression of genes involved in pathways known to regulate osteoblast differentiation, including genes involved in development and cell signaling, including calcium ion binding, WNT and PI3K/AKT pathway. In summary, RNA-seq data reveal that the CytoD activates genes linked to osteogenesis, while CK666stimulates adipogenic genes. Overall design: Bone marrow-derived MSCs were maintained in MEM containing 10% fetal bovine serum, 100 µg/ml penicillin/streptomycin. For experiments, the cells were plated at a density of 10,000 cells/cm2 in 6-well culture plates and cultured for 1 day prior to application of treatments. Cells were treated with CytochalasinD and/or CK666 for 24h followed by preparation for RNA isolation. Purified RNA was then submitted for RNA-sequencing.
Intranuclear Actin Structure Modulates Mesenchymal Stem Cell Differentiation.
Specimen part, Subject
View SamplesTo udnderstand the tissue-resident features of antigen-specific memory T cells of the bone marrow and spleen, we performed RNA-Seq and compared expression levels of genes of resting LCMV.GP66-77 specific CD4 T cells isolated from bone marrow (BM) and spleen of LCMV.GP61-80 primed C57BL/6 mice. Overall design: C57BL/6 mice were primed at day 0 with LCMV.GP61-80-NP-MSA + poly(I:C) and immunized again at day 14 with LCMV.GP61-80 + poly(I:C). Sixty days after the last immunization mice were sacrificed and LCMV.GP66–77-specific CD69+ and CD69- memory CD4 T cells were isolated from BM and spleen.
CD69<sup>+</sup> memory T lymphocytes of the bone marrow and spleen express the signature transcripts of tissue-resident memory T lymphocytes.
Sex, Age, Specimen part, Cell line, Subject
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