Gene expression in glioblastoma cells from patients before treatment. The cells were inhibited or not for FGFR1.
FGFR1/FOXM1 pathway: a key regulator of glioblastoma stem cells radioresistance and a prognosis biomarker.
Specimen part
View SamplesRNA-seq analysis of BJ cells overexpressing RasV12 and escaping senescence Overall design: Immortalized BJ-hTERT cells expressing an oncogenic version of Ras under the control of a doxycyclin-inducible promoter were grown for 60 days in the presence of Dox to induce oncogene-induced senescence (OIS). Three individual clones escaping senescence were isolated and were analyzed by RNA-seq.
Overexpression of Claspin and Timeless protects cancer cells from replication stress in a checkpoint-independent manner.
Specimen part, Subject
View SamplesTranscriptom analysis of microdissect adrenal medulla after 8 weeks of cardiac pressure overload caused by transverse aortic constriction.
Chronic cardiac pressure overload induces adrenal medulla hypertrophy and increased catecholamine synthesis.
Sex
View SamplesCharacterization of genes associated with adipose tissue is key to understanding the pathogenesis of obesity and developing treatments for this disorder. Differential gene expression in the adipose tissue has been described in adulthood but none studies have been developed on childhood. The purpose of this study was to compare gene expression in omental adipose tissue from obese prepubertal and normal weight children. We selected 5 obese (BMI adjusted for age and sex z score >2) and 6 normal weight children. RNA was extracted from omental adipose tissue biopsies and cRNA was hybridizated on the human genome U133 Plus 2.0 Arrays (Affymetrix). Microarray experiments were performed for each sample, and selected group of gene expression values were confirmed with real-time RT-PCR in 10 obese and 10 normal weigth prepubertal children. 1276 genes were found to be differentially expressed at P<0.05. Of those differential genes, 201 were upregulated (Fc>2) and 42 were downregulated (Fc<-2). Genes involved in metabolic and signalling pathways were altered in childhood obesity.
Genome-wide expression in visceral adipose tissue from obese prepubertal children.
Sex, Age, Specimen part
View SamplesTranscriptom analysis of stellate sympathetic ganglia after 8 weeks of cardiac pressure overload caused by transverse aortic constriction.
Sympathetic alpha(2)-adrenoceptors prevent cardiac hypertrophy and fibrosis in mice at baseline but not after chronic pressure overload.
Sex
View SamplesCardiac hypertrophy is associated with growth and functional changes of cardiomyocytes,including mitochondrial alterations, but the latter are still poorly understood. Here we investigated mitochondrial function and dynamic localization in neonatal rat ventricular cardiomyocytes (NRVCs) stimulated with insulin like growth factor 1 (IGF1) or phenylephrine (PE), mimicking physiological and pathological hypertrophic responses,respectively.
Hypertrophy induced KIF5B controls mitochondrial localization and function in neonatal rat cardiomyocytes.
Specimen part
View SamplesTo determine the physiological targets of the NELF complex, and provide insight into the mechanism of NELF activity in vivo.
NELF-mediated stalling of Pol II can enhance gene expression by blocking promoter-proximal nucleosome assembly.
No sample metadata fields
View Samplesalpha2-adrenoceptors are essential presynaptic regulators of norepinephrine release from sympathetic nerves. Previous studies in mice with targeted deletions in the three alpha2-adrenoceptor genes have indicated that these receptors are essential for embryonic development. In the present study, we searched for the alpha2-adrenoceptor subtype(s) involved in placental development and its molecular mechanism using mice carrying targeted deletions in alpha2-adrenoceptor genes.
Upregulation of soluble vascular endothelial growth factor receptor 1 contributes to angiogenesis defects in the placenta of alpha 2B-adrenoceptor deficient mice.
No sample metadata fields
View SamplesSince hair growth disorders can carry a major psychological burden, more effective human hair growth-modulatory agents need to be urgently developed. Here, we used the hypertrichosis-inducing immunosuppressant, cyclosporine A (CsA), as a lead compound to identify new hair growth-promoting targets. Through microarray analysis we identified the Wnt inhibitor, SFRP1, as being downregulated in the dermal papilla (DP) of CsA-treated human scalp hair follicles (HFs) ex vivo. Therefore, we further investigated the function of SFRP1 using a pharmacological approach and found that SFRP1 regulates intrafollicular canonical Wnt/-catenin activity through inhibition of Wnt ligands in the human hair bulb. Conversely, inhibiting SFRP1 activity through the SFRP1 antagonist, WAY-316606, enhanced hair shaft production, hair shaft keratin expression and inhibited spontaneous HF regression (catagen) ex vivo. Collectively, these data (a) identify Wnt signaling as a novel, non-immune-inhibitory CsA target; (b) introduce SFRP1 as a physiologically important regulator of canonical -catenin activity in a human (mini-)organ; and (c) demonstrate WAY-316606 to be a promising new promoter of human hair growth. Since inhibiting SFRP1 only facilitates Wnt signaling through ligands that are already present, this ligand-limited therapeutic strategy for promoting human hair growth may circumvent potential oncological risks associated with chronic Wnt over-activation.
Identifying novel strategies for treating human hair loss disorders: Cyclosporine A suppresses the Wnt inhibitor, SFRP1, in the dermal papilla of human scalp hair follicles.
Sex, Specimen part, Treatment
View SamplesDevelopment requires the cooperation of tissue-specific and ubiquitously expressed transcription factors, such as Sp-family members. However, the molecular details of how ubiquitous factors participate in developmental processes are still unclear. We previously showed that during the differentiation of embryonic stem cells lacking Sp1 DNA binding activity (Sp1deltaDBD/deltaDBD cells), early blood progenitors are formed. However, gene expression during differentiation becomes progressively deregulated and terminal differentiation is severely compromised. Here we studied the cooperation of Sp1 and its closest paralogue Sp3 in hematopoietic development and demonstrate that Sp1 and Sp3 binding sites largely overlap. Sp3 cooperates with Sp1deltaDBD/deltaDBD but is unable to support hematopoiesis in the complete absence of Sp1. Using single cell gene expression analysis, we show that the lack of Sp1 DNA binding leads to a distortion of cell fate decision timing, indicating that stable chromatin bi nding of Sp1 is required to maintain robust differentiation trajectories. Overall design: RNA-Seq in ESC, Flk, HE1, HE2 and progenitor cells with WT, Sp1deltaDBD or Sp3KO
Robust hematopoietic specification requires the ubiquitous Sp1 and Sp3 transcription factors.
Specimen part, Cell line, Subject
View Samples