Combined treatment with NRG-1 and DMSO led to efficient differentiation of iPS into mature ventricular-like cardiac cells, which were capable of preserving cardiac function and tissue viability when transplanted into a mouse model of myocardial infarction.
Neuregulin-1β induces mature ventricular cardiac differentiation from induced pluripotent stem cells contributing to cardiac tissue repair.
Sex
View SamplesRegulatory T cells (Treg cells) expressing the forkhead family transcription factor Foxp3 are critical mediators of dominant immune tolerance to self. Most Treg cells constitutively express the high-affinity interleukin 2 (IL-2) receptor alpha-chain (CD25); however, the precise function of IL-2 in Treg cell biology has remained controversial. To directly assess the effect of IL-2 signaling on Treg cell development and function, we analyzed mice containing the Foxp3gfp knock-in allele that were genetically deficient in either IL-2 (Il2-/-) or CD25 (Il2ra-/-). We found that IL-2 signaling was dispensable for the induction of Foxp3 expression in thymocytes from these mice, which indicated that IL-2 signaling does not have a nonredundant function in the development of Treg cells. Unexpectedly, Il2-/- and Il2ra-/- Treg cells were fully able to suppress T cell proliferation in vitro. In contrast, Foxp3 was not expressed in thymocytes or peripheral T cells from Il2rg-/- mice. Gene expression analysis showed that IL-2 signaling was required for maintenance of the expression of genes involved in the regulation of cell growth and metabolism. Thus, IL-2 signaling seems to be critically required for maintaining the homeostasis and competitive fitness of Treg cells in vivo.
A function for interleukin 2 in Foxp3-expressing regulatory T cells.
No sample metadata fields
View Samplesanalyzed changes in cytokine/chemokine production and gene expression levels in, human peripheral blood mononuclear cells upon teratment with 15M,2,4-benzenetriol
Identification of human cell responses to benzene and benzene metabolites.
No sample metadata fields
View SamplesTrimethylated histone H3-lysine 4 is primarily distributed in the form of sharp peaks, extending in neuronal chromatin on average only across 500-1500 base pairs mostly in close proximity to annotated transcription start sites. To explore whether H3K4me3 peaks could also extend across much broader domains, we undertook a detailed analysis of broadest domain cell-type specific H3K4me3 peaks in ChIP-seq datasets from sorted neuronal and non-neuronal nuclei in human, non-human primate and mouse prefrontal cortex (PFC), and blood for comparison. Overall design: We collected separately cortical gray (GM) and subcortical white matter (WM) from 6 adult human subjects without neurological disease and extracted total RNA processed by the RNA-Seq approach.
Deciphering H3K4me3 broad domains associated with gene-regulatory networks and conserved epigenomic landscapes in the human brain.
No sample metadata fields
View SamplesFetal asphyctic (FA) preconditioning is effective in attenuating brain damage incurred by a subsequent perinatal asphyctic insult. Unraveling mechanisms of this endogenous neuroprotection, activated by FA preconditioning, is an important step towards new clinical strategies for asphyctic neonates. Genomic reprogramming is thought to be, at least in part, responsible for the protective effect of preconditioning. Therefore, we investigated whole genome differential expression in the preconditioned rat brain.
Fetal asphyctic preconditioning alters the transcriptional response to perinatal asphyxia.
Sex, Specimen part
View SamplesThis SuperSeries is composed of the SubSeries listed below.
Foxp3-dependent programme of regulatory T-cell differentiation.
Sex
View SamplesThis data set is comprised of all peripheral (pooled lymph nodes and spleen) T cell subsets presented in this manuscript. These include T-N, T-25, T-FN and T-R cells; T-25, T-FN and T-R cells from mice treated with IL-2; and T-R cells transduced with empty, PDE3B-expressing or PDE3B(H801A)-expressing retroviral vectors (after transfer into recipient mice).
Foxp3-dependent programme of regulatory T-cell differentiation.
Sex
View SamplesThis data set is comprised of all thymic T cell subsets presented in this manuscript. These include T-N, T-25, T-FN and T-R thymocytes.
Foxp3-dependent programme of regulatory T-cell differentiation.
Sex
View SamplesTIMP-2 is an endogenous angiogenesis inhibitor, i.e. inhibits endothelial cell proliferation and tumor angiogenesis. As a result, TIMP-2 inhibits tumor growth and progression to metastasis. Understanding, therefore, the mechanisms of TIMP-2-mediated tumor growth inhibition would provide further support on the use of TIMP-2 as a novel biological agent for cancer therapy. We used microarray analysis to determine the TIMP-2 and Ala+TIMP-2 transcriptional profiles of A549 cancer cells in order to understand how TIMP-2 inhibits tumor growth and angiogenesis.
TIMP-2 modulates cancer cell transcriptional profile and enhances E-cadherin/beta-catenin complex expression in A549 lung cancer cells.
Specimen part, Cell line
View SamplesBackground: Increasing evidence indicates stem cell transplantation may be an effective stroke treatment but little is known about the direct impact of transplanted cells on injured brain tissue. We investigated the effects of lineage negative murine hematopoietic stem/progenitor cells (HSPCs) on the cerebral microcirculation following ischemia-reperfusion injury (I/RI). Following subsequent evaluation of the mRNA transcriptome of the explanted HSPCs, we assessed whether metallothionein (MT)-1, (increased in explanted HSPCs from I/R mice) administration was able to evoke similar neuro-protection following cerebral I/RI. Methods and Results: Murine HSPCs administered intravenously 24 hours (h) post cerebral I/R were selectively recruited to the brain of I/RI mice. Mice treated with HSPCs displayed decreased disease severity for up to 2-weeks post cerebral I/R, as evidenced by decreased mortality rate, decreased infarct volume, improved functional outcome, reduced microglial activation and elevated plasma levels of anti-inflammatory interleukin-10. Using confocal intravital microscopy, we found that transplanted cells had emigrated into the brain parenchyma and that RNA-seq analysis of explanted HSPCs indicated significantly increased levels of metallothionein transcripts, in particular MT-1. We further determined that treatment of mice with MT-1 significantly reduced neurological score and IV. Conclusions: These studies provide further evidence for HSPCs as a promising therapeutic strategy in promoting repair following cerebral I/RI, potentially via a MT-1 mechanism. Overall design: Murine HSPCs were administered into mice with I/RI intravenously 24 hours post cerebral I/R and selectively recruited to the brain. RNA profiles of explanted HSPCs were determined by RNA sequencing.
Metallothionein I as a direct link between therapeutic hematopoietic stem/progenitor cells and cerebral protection in stroke.
Specimen part, Cell line, Treatment, Subject
View Samples