CMPF is elevated in diabetes and is associated with impaired insulin secretion. We used microarrays to determine the effect of CMPF on gene expression in isolated islets.
The furan fatty acid metabolite CMPF is elevated in diabetes and induces β cell dysfunction.
Sex, Age, Specimen part, Treatment
View SamplesAgonistic encounters with conspecifics are powerful effectors of future behavior that evoke strong and durable neurobiological responses. We recently identified a deeply conserved “toolkit” of transcription factors (TFs) that respond to social challenge across diverse species in coordination with distinct conserved signatures of energy metabolism and developmental signaling. To further characterize this response and its transcriptional drivers in mice, we examined gene expression and chromatin landscape in the hypothalamus, frontal cortex, and amygdala of socially challenged and control animals over time. The data revealed a complex spatiotemporal pattern of metabolic, neural, and developmental transcriptomic signatures coordinated with significant shifts in the accessibility of distally located regulatory elements. Transcriptional regulatory network and motif analyses revealed an interacting network of TFs correlated with differential gene expression across the tissues and time points we assayed, including the early-acting and conserved regulator of energy metabolism and development, ESRRA. Cell-type deconvolution analysis attributed the early metabolic activity implicated by our transcriptomic analysis primarily to oligodendrocytes and the developmental signal to neurons, and we confirmed the presence of ESRRA in both oligodendrocytes and neurons throughout the brain. To assess the role of this nuclear receptor as an early trigger of this coordinated response, we used chromatin immunoprecipitation to map ESRRA binding sites to a set of genes involved in metabolic regulation and enriched in challenge-associated differentially expressed genes. Together, these data support a rich model linking metabolic and neural responses to social challenge, and identify regulatory drivers with unprecedented tissue and temporal resolution. Overall design: Territory-holding resident mice were males from the C57BL/6J strain co-housed with females to establish a territory. Intruder mice were males from the BALB/C strain. Animals were housed in a 12L:12D animal room until the resident-intruder paradigm was undertaken. Before behavior work, male C57BL/6J animals were cohoused with members of the same sex for two weeks, housed alone for a week, and then housed with a single C57BL/6J female for a week to establish a territory. Thus, before behavior work, the animals were allowed to habituate to our animal facility for four weeks. Three hours before testing, females were removed from the resident males’ cages. Immediately before the trial, residents’ cages were inserted into a blank-walled chamber. For experimental mice, we introduced unfamiliar intruder BALB/cJ male mice. Intruders were contained within a stainless steel wire ~1cm mesh cage to prevent animals from making contact and injuring one another. Control animals were exposed to the same cage, but containing a paper cup instead of an intruder mouse. The cages were removed in both intruder and control conditions after five minutes. After exposure to the intruder or control stimulus, resident animals were allowed to sit in a dark and quiet place for either 30 minutes, 60 minutes, or 120 minutes. Residents were then immediately euthanized by cervical dislocation. As soon as animals were euthanized, we extracted three brain regions of interest from our animals: frontal cortex, hypothalamus, and amygdala. This yielded tissue samples from which RNA was extracted. The RNA samples were pooled to generate libraries for sequencing. For control mice there were 5 replicates for all combinations of time after stimulus (30, 60, 120 minutes) and brain region (frontal cortex, hypothalamus, amygdala) except for hypothalamus from control mice after 30 minutes (3 replicates) and for frontal cortex from control mice after 120 minutes (6 replicates). For experimental mice there were 5 replicates for all combinations of time after stimulus (30, 60, 120 minutes) and brain region (frontal cortex, hypothalamus, amygdala) except for frontal cortex from experimental mice after 120 minutes (6 replicates).
Transcriptional regulatory dynamics drive coordinated metabolic and neural response to social challenge in mice.
Subject
View SamplesRNA sequencing data of macrophages after differentiation in the presence of TPC1 thyroid cancer cell line Overall design: Co-incubation in trans-well system between TPC1 cell lines and human primary macrophages
Transcriptional and metabolic reprogramming induce an inflammatory phenotype in non-medullary thyroid carcinoma-induced macrophages.
No sample metadata fields
View SamplesSequencing libraries were generated from total RNA samples following the mRNAseq protocol for the generation of single end (16-36 hpf, 5 day larvae, adult head and adult tail) or paired end (24 hpf) libraries (Illumina). Single end reads of 36 nucleotides and paired end reads (2 x 76 nucleotides) were obtained with a GAIIx (Illumina). Gene expression at the different stages/tissu was assessed by cufflinks and HTseq. Overall design: RNAseq on 5 differents samples: 24hpf embryos, pool of 16 hour to 36 hour embryos, 5 days old larvea, adult head and adult tail
Genome-wide, whole mount in situ analysis of transcriptional regulators in zebrafish embryos.
No sample metadata fields
View SamplesEfferent inhibition of cochlear outer hair cells is mediated by nicotinic cholinergic receptors containing alpha9 (a9) and alpha10 subunits. Mice lacking a9 nicotinic subunits fail to exhibit classic olivocochlear responses and are characterized by abnormal synaptic morphology at the base of outer hair cells. To detail molecular changes induced upon the loss of a9 subunit, we sampled cochlear RNA from wild type and a9 null mice at postnatal (P) days spanning periods of synapse formation and maturation (P3, P7, P13 and P60). Our findings point to a delay in cochlear maturation starting at the onset of hearing (P13), as well as an up-regulation of various GABA receptor subunits in adult mice lacking the a9 nicotinic subunit.
Lack of nAChR activity depresses cochlear maturation and up-regulates GABA system components: temporal profiling of gene expression in alpha9 null mice.
Specimen part
View SamplesBackground: Transposable elements are known to influence the regulation of some genes. We aimed to determine which genes show altered gene expression when transposable elements are epigenetically activated.
Genome-wide identification of genes regulated in trans by transposable element small interfering RNAs.
Specimen part
View SamplesHematopoietic stem cells (HSCs) are generated via a natural transdifferentiation process known as endothelial-to-hematopoietic cell transition (EHT). Due to small numbers of embryonal arterial cells undergoing EHT and the paucity of markers to enrich for hemogenic endothelial cells, the genetic program driving HSC emergence is largely unknown. Here, we use a highly sensitive RNAseq method to examine the whole transcriptome of small numbers of enriched aortic HSCs (CD31+cKit+Ly6aGFP+), hemogenic endothelial cells (CD31+cKit-Ly6aGFP+) and endothelial cells (CD31+cKit-Ly6aGFP-). Overall design: Comparison of mRNA profiles of endothelial cells, hemogenic endothelial cells, and hematopoietic stem cells generated by deep-sequencing of sorted populations from pool of embryos, in triplicate.
Whole-transcriptome analysis of endothelial to hematopoietic stem cell transition reveals a requirement for Gpr56 in HSC generation.
No sample metadata fields
View SamplesAmniotic fluid (AF) is a complex biological material that provides a unique window into the developing human. Residual AF supernatant contains cell-free fetal RNA. The objective of this study was to develop an understanding of the AF core transcriptome by identifying the transcripts ubiquitously present in the AF supernatant of euploid midtrimester fetuses.
The amniotic fluid transcriptome: a source of novel information about human fetal development.
Sex
View SamplesWhole brain irradiation remains important in the management of brain tumors. Although necessary for improving survival outcomes, cranial irradiation also results in cognitive decline in long-term survivors. A chronic inflammatory state characterized by microglial activation has been implicated in radiation-induced brain injury, and here we present a comprehensive transcriptional profile of irradiated microglia.
Aging-like changes in the transcriptome of irradiated microglia.
Age, Specimen part
View SamplesDuring pregnancy, cells from each fetus travel into the maternal circulation and organs, resulting in the development of microchimerism. Identification of the cell types in this microchimeric population would permit better understanding of possible mechanisms by which they affect maternal health. However, comprehensive analysis of fetal cells has been hampered by their rarity. In this study, we sought to overcome this obstacle by combining flow cytometry with multidimensional gene expression microarray analysis of fetal cells isolated from the murine maternal lung during late pregnancy. Fetal cells were collected from the lungs of pregnant female mice. cDNA was amplified and hybridized to gene expression microarrays. The resulting fetal cell core transcriptome was interrogated using multiple methods including Ingenuity Pathway Analysis, the BioGPS gene expression database, principal component analysis, the Eurexpress gene expression atlas and primary literature. Here we report that small numbers of fetal cells can be flow sorted from the maternal lung, facilitating discovery-driven gene expression analysis. We additionally show that gene expression data can provide functional information about the fetal cells. Our results suggest that fetal cells in the murine maternal lung are a mixed population, consisting of trophoblasts, mesenchymal stem cells and cells of the immune system. The detection of trophoblasts and immune cells in the maternal lung may facilitate future mechanistic studies related to the development of immune tolerance and pregnancy-related complications, such as preeclampsia. Furthermore, the presence and persistence of mesenchymal stem cells in maternal organs may have implications for long-term postpartum maternal health.
Comprehensive analysis of genes expressed by rare microchimeric fetal cells in the maternal mouse lung.
No sample metadata fields
View Samples