Gene expression profiles from ALDH high cells sorted from expanded adult human pancreatic organoids are more similar to fetal pancreatic tissue and ALDH high cells sorted from expanded fetal human pancreatic organoids than to adult human islets or adult islet-depleted exocrine tissue. Overall design: RNA was isolated from ALDHhi cells sorted from organoids after 7 days expansion derived from human adult pancreatic tissue, ALDHhi cells sorted from organoids after 7 days expansion derived from human fetal pancreatic tissue, primary fetal pancreatic tissue, adult human islets from different donors and adult exocrine (islet-depleted) pancreatic tissue from different donors.
Expansion of Adult Human Pancreatic Tissue Yields Organoids Harboring Progenitor Cells with Endocrine Differentiation Potential.
Specimen part, Subject
View Samples10X-based scRNA-seq data human fetal kidneys at 5 different ages Overall design: w9, w11, w13, w16 and w18 human fetal kidneys
Single-cell transcriptomics reveals gene expression dynamics of human fetal kidney development.
Specimen part, Subject
View SamplesAnalysis of transcriptional differences between control and RA-treated cells during cardiac differentiation. The hypothesis tested in these samples is that addition of RA during differentiation towards atrial-like cardiomyocytes while control cells treated with DMSO result in ventricular-like cardiomyocytes. Overall design: NKX2.5 (eGFP/w)-hESCs were differentiated to cardiomyocytes with spin EB protocol, with the addition of RA or DMSO. Cells were sorted at day-31 based on GFP resulting in CTplus, CTminus, RAplus or RAminus goups. RNA was isolated from each of these fractions for sequencing.
KeyGenes, a Tool to Probe Tissue Differentiation Using a Human Fetal Transcriptional Atlas.
No sample metadata fields
View SamplesMouse Embryonic Stem Cells (ESCs) express PDGFRa heterogeneously, fluctuating between a PDGFRa+ (PrE-primed) and a Platelet Endothelial Cell Adhesion Molecule 1 (PECAM1)-positive state (epiblast-primed). The two surface markers can be co-detected on a third subpopulation, expressing epiblast and PrE determinants. Overall design: Three different subpopulatiosn were sorted based on PECAM1/PDGFRa expression and analyzed by NGS
PDGFRα<sup>+</sup> Cells in Embryonic Stem Cell Cultures Represent the In Vitro Equivalent of the Pre-implantation Primitive Endoderm Precursors.
No sample metadata fields
View SamplesThe first HSCs are produced in the aorta-gonadmesonephros (AGM) region of the embryo through endothelial to a hematopoietic transition. BMP4 and Hedgehog affect their production/expansion, but it is unknown whether they act to affect the same HSCs. In this study using the BRE GFP reporter mouse strain that identifies BMP/Smad-activated cells, we find that the AGM harbors two types of adult-repopulating HSCs upon explant culture. Overall design: Embryonic day 11 AGM are dissected and either analyzed directly, or after explant culture in conditions containing BMP/Hedgehog with or without cyclopamine. EC: endothelial enriched (CD31+Kit-); MC: mesenchymal cell enriched (CD31-Kit-); HPSC: hematopoietic progenitor/stem cell enriched; AGM11: E11 fresh AGMs; AGMex: AGM after explant culture; AGMcy: AGM after explant in presence of cyclopamine; CD31p: CD31 positive; CD31n: CD31 negative; KITp: c-Kit positive; KITn: c-Kit negative; BREp: BRE-GFP positive; BREn: BRE-GFP negative
BMP and Hedgehog Regulate Distinct AGM Hematopoietic Stem Cells Ex Vivo.
Specimen part, Cell line, Subject
View SamplesIn this study we determine the transcriptional profile by RNAseq of mESC in the absence of Smad1 and Smad5 and in subpopulation of mESC with different levels of BMP-SMAD activation. Overall design: Transcriptome analysis using RNAseq was performed on 3 biological replicates of BRE negative and positive mESC subpopulations, which were collected in pairs at 3 different times. Transcriptome analysis using RNAseq was performed on Smad1/5 floxed (FL) and knockout (KO) mESC. Two different parental cell lines were used. For each parental cell line we analyzed one Smad1/5 FL sample and two Smad1/5 KO samples, resulting in respectively two and four biological replicates for the FL and KO conditions.
BMP-SMAD Signaling Regulates Lineage Priming, but Is Dispensable for Self-Renewal in Mouse Embryonic Stem Cells.
No sample metadata fields
View SamplesAnthrax lethal toxin directly targets human peripheral monocytes and causes multiple aberrant gene responses that would be expected to result in defects in human monocytes normal signaling transduction pathways and nction. This study provides further insights into the mechanisms associated with the host immune system collapse during an anthrax infection, and suggests that anthrax LT may have additional targets outside the well-known MAPK pathway.
Bacillus anthracis' lethal toxin induces broad transcriptional responses in human peripheral monocytes.
Sex, Age, Specimen part
View SamplesOver the last years, evidence has grown that exposure to air pollution, in addition to impairing lung function and health in individuals of all age, can be linked to negative effects in newborn when present during pregnancy. Data suggests that intrauterine exposure of fetuses (exposure of the mother to air pollution during pregnancy) in fact exerts a negative impact on lung development. However, the means by which exposure during pregnancy affects lung development, have not been studied in depth yet. In this study, we investigated alterations of the transcriptome of the developing lung in a mouse model of gestational and early-life postnatal exposure to urban PM2.5 (from Sao Paulo, Brazil).
Pre- and postnatal exposure of mice to concentrated urban PM<sub>2.5</sub> decreases the number of alveoli and leads to altered lung function at an early stage of life.
Specimen part
View SamplesBreast carcinoma (BC) have been extensively profiled by high-throughput technologies for over a decade, and broadly speaking, these studies can be grouped into those that seek to identify patient subtypes (studies of heterogeneity) or those that seek to identify gene signatures with prognostic or predictive capacity. The shear number of reported signatures has led to speculation that everything is prognostic in BC. Here we show that this ubiquity is an apparition caused by a poor understanding of the inter- relatedness between subtype and the molecular determinants of prognosis. Our approach constructively shows how to avoid confounding due to a patient's subtype, clinicopathological or treatment profile. The approach identifies patients who are predicted to have good outcome at time of diagnosis by all available clinical and molecular markers, but who experience a distant metastasis within five years. These inherently difficult patients (~7% of BC) are prioritized for investigations of intra-tumoral heterogeneity.
The prognostic ease and difficulty of invasive breast carcinoma.
Age, Disease stage, Time
View SamplesPublic information is widely available at low cost to animals living in social groups. For instance, bystanders may eavesdrop on signaling interactions between conspecifics and use it to adapt their subsequent behavior towards the observed individuals. This social eavesdropping ability is expected to require specialized mechanisms such as social attention, which selects social information available for learning. To begin exploring the genetic basis of social eavesdropping, we used a previously established attention paradigm in the lab to study the brain gene expression profile of male zebrafish in relation to the attention they have paid towards conspecifics involved or not involved in agonistic interactions. Microarray gene chips were used to characterize their brain transcriptomes based on differential expression of single genes and gene sets. These analyses were complemented by promoter region-based techniques. Using data from both approaches, we further drafted protein interaction networks. Our results suggest that attentiveness towards conspecifics, whether interacting or not, activates pathways linked to neuronal plasticity and memory formation. The network analyses suggested that fos and jun are key players on this response, and that npas4a, nr4a1 and egr4 may also play an important role.
Brain Transcriptomic Response to Social Eavesdropping in Zebrafish (Danio rerio).
Sex, Specimen part, Treatment
View Samples