Pheochromocytomas/paragangliomas are the most heritable of all tumors. However, there are still cases that are not explained by mutations in the known genes. We aimed to identify the genetic cause of disease in a patient strongly suspected of having hereditary tumors. We identified a novel de novo mutation in DNMT3A, affecting a highly conserved residue. Among other results from other techniques, a different global expression profile was observed in the patient carrying the mutated DNMT3A compared to controls (parents) by RNA-seq
Gain-of-function mutations in DNMT3A in patients with paraganglioma.
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View SamplesAging is a complex process characterized by a progressive decline in physiological integrity that leads to impaired cellular and tissue function. Adult stem cells play a critical role in organismal health and aging. Their age-related deterioration contributes to a reduced homeostatic and regenerative capacity. Notably, most studies of stem cell aging focus on the mechanisms of replicative aging in stem cells with high cellular turnover. Yet, the therapeutic potential of stem cells with low cellular turnover, such as adipose-derived stem cells (ASC), is increasingly recognized as potentially superior. The mechanism of aging in low turnover stem cells is thought to differ from those with high turnover and to more closely reflect chronological aging. The latter, however, is exceedingly difficult to study in slowly replicating primary human stem cells and thus remains poorly understood. Here, we employ our unique model of chronological aging in primary human ASCs to examine genome-wide transcriptional networks in early chronological aging using RNA-seq analyses. Our findings demonstrate that the transcriptome of aging ASCs is more stable than that of age-matched fibroblasts. Limited transcriptional modifications in aging ASCs reveal more active transcriptional profiles of cell cycle genes and translation initiation genes when compared with aging differentiated cells. Accordingly, nascent protein synthesis, measured by incorporation of op-puromycin, is increased in ASCs from older individuals, concurrent with a decreased phosphorylation at ser-51 of eIF2, a mechanism of inhibiting translation initiation. A shortened G1 phase observed in the old ASCs could be linked to the increased protein synthesis activity, potentially resulting in more active cell proliferation. This effect, however, is not detected in aging fibroblasts. The altered regulation of cell cycle in aging ASCs could allow a more active cell proliferation to meet an increase demand to preserve tissue and organ functions. These observations are consistent with data supporting the maintenance of ASC integrity in aging human adipose tissue and reveal early chronological aging mechanisms in ASCs that are inherently different from other cell types. Overall design: Examination of the transcriptome with RNA-seq in stem cells and fibroblasts
Transcriptional and Cell Cycle Alterations Mark Aging of Primary Human Adipose-Derived Stem Cells.
Age, Specimen part, Cell line, Subject
View SamplesPurpose: The goals of this study are to use NGS to perform transcriptome profiling (RNA-seq) to find the changes of the global gene expression programs after viral mimic stimulation in Mouse Embryonic Fibroblasts (MEFs) Methods: MEFs were staimulated by 10 ug/ml Poly(dA:dT) or Poly(I:C) using Lipofectamine 2000 (Invitrogen) as transfection regaent in Opti-MEM medium for 6 hours. Mock groups were treated only with transfection regaent. Total RNA was extracted using RNeasy Mini Kit (Qiagen) according to the manufacturer protocol. Total RNA was used for library construction at the Center for Genomics and Systems Biology, New York University Abu Dhabi, using TruSeq RNA Library Prep Kit v2 (Illumina). Deep-sequencing was performed using Illumina HiSEq 2500 sequencing platform (New York University Abu Dhabi Sequencing Center). Data was processed through the standard RNAseq analysis pipeline at NYUAD. Read aligmnet was performed using tophat2 v2.1.0 against Mus musculus GRCm38.p4 genome version. Raw counts of mapped reads of each genes were derived using HTseq count. DESeq2 was used for differential expression analysis. Results: Using an optimized data analysis workflow, we identified genes up-regulated or down-regulated after anti-viral immunity activation. Gene ontology analysis further identified biological processes, cellular components and molecular functions that were overrepresented in the differentially expressed genes. Conclusions: Our study provides a good reourses for profiling genes regulations after viral immunity activation Overall design: mRNA profiles of Wild Type MEFs stimulated by viral mimics to study how global transcriptome changes after innate vrial immunity activation in non-immune cells
Analysis of Global Transcriptome Change in Mouse Embryonic Fibroblasts After dsDNA and dsRNA Viral Mimic Stimulation.
Age, Specimen part, Cell line, Treatment, Subject
View Samples18 zero-hour and 18 selected post-transplant (Tx) biopsy samples from 18 kidney allografts (8 acute kidney injury (AKI), 10 PBx - protocol biopsies - controls) were analyzed by using the Affymetrix GeneChip Human Gene 2.0 ST Array.
Molecular biomarker candidates of acute kidney injury in zero-hour renal transplant needle biopsies.
Specimen part
View SamplesThis SuperSeries is composed of the SubSeries listed below.
Molecular pathogenesis of post-transplant acute kidney injury: assessment of whole-genome mRNA and miRNA profiles.
Specimen part
View SamplesTransposable elements make up nearly half of mammalian genomes, yet are generally described as 'junk DNA' or genome parasites. The LINE1 retrotransposon is the most abundant class and is thought to be deleterious for cells, but it is paradoxically expressed at high levels during early development. Here, we report that LINE1 plays essential roles in mouse embryonic stem (ES) cells and pre-implantation embryos. In ES cells, LINE1 acts as a nuclear RNA scaffold that recruits Nucleolin and Kap1/Trim28 to repress Dux, the master activator of a gene expression program specific to the 2-cell stage. In parallel, LINE1 RNA mediates binding of Nucleolin and Kap1 to rDNA, thereby promoting rRNA synthesis and ES cell self-renewal. In embryos, LINE1 RNA is required for silencing of Dux, proper synthesis of rRNA and exit from the 2-cell stage. These results reveal an essential partnership between nuclear LINE1 RNA and chromatin factors in the regulation of transcription, developmental potency and ES cell self-renewal. Overall design: 3 replicates each of E14 ES cells two days after nucleofection with Lissaminated ASOs - RC (control) or LINE1, purified according to Lissamine+ using flow cytometry then lysed for RNA extraction and library generation (6 samples total)
A LINE1-Nucleolin Partnership Regulates Early Development and ESC Identity.
Specimen part, Cell line, Subject
View SamplesIn this manuscript, we present a more extensive analysis of inflammatory suppression mediated by L. plantarum at the respiratory tract. Via full genome microarray of whole lung tissue, we have generated an extensive list of soluble proinflammatory mediators that are expressed in response to PVM infection and we identify those mediators that are suppressed and also those that are not suppressed in response to L. plantarum priming. We focused further study on three specific virus-induced soluble mediators that are differentially expressed and that serve as specific biomarkers for Lactobacillus-mediated survival in response to acute respiratory virus infection. Among several novel directions, we use these biomarker cytokines to explore Lactobacillus-mediated actions at the respiratory tract that are unique and distinct from those taking place at gastrointestinal mucosa.
Immunobiotic Lactobacillus administered post-exposure averts the lethal sequelae of respiratory virus infection.
Specimen part
View SamplesWe aimed at analyzing the transcriptome changes associated with SPOP mutation in DU145 cells
SPOP Deregulation Improves the Radiation Response of Prostate Cancer Models by Impairing DNA Damage Repair.
Cell line
View SamplesThis SuperSeries is composed of the SubSeries listed below.
LEADeR role of miR-205 host gene as long noncoding RNA in prostate basal cell differentiation.
Cell line
View SamplesWe aimed at analyzing the transcriptome changes associated with the deletion of a portion of the Alu element from MIR205HG transcript
LEADeR role of miR-205 host gene as long noncoding RNA in prostate basal cell differentiation.
Cell line
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