This analysis represents the first comprehensive sampling of germ cells in the developing testis over time, at high-resolution, single-cell depth. From these analyses, we have not only revealed novel genetic regulatory signatures of murine germ cells over time, but have also demonstrated that cell types positive for a single marker gene have the capacity to change dramatically during testis maturation, and therefore cells of a particular “identity” may differ significantly from postnatal to adult life. Overall design: Single-cell suspensions of mammalian testes ranging from PND6 to adult were processed for single-cell RNAseq (10x Genomics Chromium) and libraries were sequenced on a NextSeq500 (Illumina).
Dynamic transcriptome profiles within spermatogonial and spermatocyte populations during postnatal testis maturation revealed by single-cell sequencing.
Age, Disease, Cell line, Subject
View SamplesBACKGROUND: Appendicitis followed by appendectomy (AA) at a young age protects against later inflammatory bowel disease (IBD). Using a novel murine appendicitis model we earlier demonstrated that AA proffered significant protection against subsequent experimental colitis.
Protective pathways against colitis mediated by appendicitis and appendectomy.
Age, Specimen part
View SamplesNeonates are intrinsically defective at creating memory CD8+ T cells in response to infection with intracellular pathogens. Here we investigated differential of small RNAs, transcription factors, and chemokine receptors regulation in neonates as compared to adults before and during infection. We found that prior to infection, na誰ve cells have a different expression profile for many microRNAs, and gene targets of these microRNAs show widespread expression differences. These targets and other changes in gene expression in na誰ve cells result in neonatal cells that get activated more easily, express chemokine receptors that home to sites of infection, and are less protected from apoptosis during contraction. As a result, changes in neonatal na誰ve cells drive effector cell terminal differentiation at the expense of creating long-lived memory cells. Overall design: total RNAs were sequenced from adult and neonatal CD8+ T cells before and during infection
MicroRNAs and Their Targets Are Differentially Regulated in Adult and Neonatal Mouse CD8+ T Cells.
No sample metadata fields
View Samples5-aminolevulinic acid (ALA) is the common precursor of all biological synthezised tetrapyrroles. Inhibition of ALA synthesis results in decreased amounts of chlorophylls, heme, siroheme and phytochrome. It was previously shown that 4 out of 5 Arabidopsis mutants uncoupling nuclear gene expression from the physiological state of the chloroplast are affected in plant tetrapyrrole biosynthesis. It is common to all four mutants to show a reduced ALA formation.
Evidence for a Contribution of ALA Synthesis to Plastid-To-Nucleus Signaling.
Age, Specimen part
View SamplesNeonates are intrinsically defective at creating memory CD8+ T cells in response to infection with intracellular pathogens. Here we investigated differential of small RNAs, transcription factors, and chemokine receptors regulation in neonates as compared to adults before and during infection. We found that prior to infection, na誰ve cells have a different expression profile for many microRNAs, and gene targets of these microRNAs show widespread expression differences. These targets and other changes in gene expression in na誰ve cells result in neonatal cells that get activated more easily, express chemokine receptors that home to sites of infection, and are less protected from apoptosis during contraction. As a result, changes in neonatal na誰ve cells drive effector cell terminal differentiation at the expense of creating long-lived memory cells. Overall design: PolyA RNA was selected and sequenced from adult and neonatal CD8+ T cells before and during infection
MicroRNAs and Their Targets Are Differentially Regulated in Adult and Neonatal Mouse CD8+ T Cells.
No sample metadata fields
View SamplesNeuroprotective therapies for retinal degeneration may be used to rescue retinal cells and preserve vision. Hypoxic preconditioning stabilizes the transcription factor HIF-1 in the retina and strongly protects photoreceptors in an animal model of light-induced retinal degeneration.
Analysis of the retinal gene expression profile after hypoxic preconditioning identifies candidate genes for neuroprotection.
No sample metadata fields
View SamplesThe goals of this study are to utilize high-throughput transcriptome sequencing of mutant and control fetal testis samples to identify changes in both transcript and repeat element abundance in tissues harboring a homozygous mutation for Glis3. 672 unique genes were differentially expressed in mutant versus wild-type samples. Of the downregulated genes, there was a strong enrichment for piRNA pathway members, while upregulated genes were associated with leydig cell differentiation, meiosis, and histone cluster genes. Differential expression of several repeat elements was also detected in mutant samples. Our findings provide valuable information on the potential mechanisms underlying the fetal germ cell loss observed in Glis3 mutant testes. Overall design: Whole testis mRNA profiles of embryonic day 14.5 wild type (WT) and Glis3 mutant mice were generated by deep sequencing, using Illumina HiSeq2500
Loss of Glis3 causes dysregulation of retrotransposon silencing and germ cell demise in fetal mouse testis.
Specimen part, Subject
View SamplesWe used NEBNext Ultra Directional RNA Library Prep Kits to prepare RNA-seq libraries of total RNA from hnRNP A2/B1 and A1 depleted A549 cells. Pro-seq libraries were prepared from A549 cells using Illumina adapters Overall design: hnRNP A2/B1 and A1 depleted A549 cells were generated by lentiviral infections of shRNA constructs. RNAs were isolated using Trizol.
A widespread sequence-specific mRNA decay pathway mediated by hnRNPs A1 and A2/B1.
No sample metadata fields
View SamplesNeonates often generate incomplete immunity against intracellular pathogens, although the mechanism of this defect is poorly understood. An important question is whether the impaired development of memory CD8+ T cells in neonates is due to an immature priming environment or lymphocyte-intrinsic defects. Here we show that neonatal and adult CD8+ T cells adopted different fates when responding to equal amounts of stimulation in the same host. While adult CD8+ T cells differentiated into a heterogeneous pool of effector and memory cells, neonatal CD8+ T cells preferentially gave rise to short-lived effector cells and exhibited a distinct gene expression profile. Surprisingly, impaired neonatal memory formation was not due to a lack of responsiveness, but instead because neonatal CD8+ T cells expanded more rapidly than adult cells and quickly became terminally differentiated. Collectively, these findings demonstrate that neonatal CD8+ T cells exhibit an imbalance in effector and memory CD8+ T cell differentiation, which impairs the formation of memory CD8+ T cells in early life Overall design: mRNA profiles of effector CD8+ T cells from neonatal and adult mice
Rapid proliferation and differentiation impairs the development of memory CD8+ T cells in early life.
No sample metadata fields
View SamplesNCI-60 cancer cell lines were profiled with their genome-wide gene expression patterns using Affymetrix HG-U133A chips.
A strategy for predicting the chemosensitivity of human cancers and its application to drug discovery.
No sample metadata fields
View Samples