This SuperSeries is composed of the SubSeries listed below.
Oxygen regulation of breathing through an olfactory receptor activated by lactate.
Specimen part
View SamplesDuring organogenesis of the intestine, reciprocal crosstalk between the endodermally-derived epithelium and the underlying mesenchyme is required for regional patterning and proper differentiation. Though both of these tissue layers participate in patterning, the mesenchyme is thought to play a prominant role in the determination of epithelial phenotype during development and in adult life. However, the molecular basis of this instructional dominance is unclear. In fact, surprisingly little is known about the cellular origins of many of the critical signaling molecules and the gene transcriptional events that they impact. Here, we profile genes that are expressed in separated mesenchymal and epithelial compartments of the perinatal mouse intestine. The data indicate that the vast majority of soluble modulators of signaling pathways such as Hedgehog, Bmp, Wnt, Fgf and Igf are expressed predominantly or exclusively by the mesenchyme, accounting for its ability to dominate instructional crosstalk. We also catalog the most highly enriched transcription factors in both compartments and find evidence for a major role for Hnf4alpha and Hnf4 gamma in the regulation of epithelial genes. Finally, we find that while epithelially enriched genes tend to be highly tissue-restricted in their expression, mesenchymally-enriched genes tend to be broadly expressed in multiple tissues. Thus, the unique tissue-specific signature that characterizes the intestinal epithelium is instructed and supported by a mesenchyme that itself expresses genes that are largely non-tissue specific.
Deconvoluting the intestine: molecular evidence for a major role of the mesenchyme in the modulation of signaling cross talk.
No sample metadata fields
View SamplesThe carotid body is a chemoreceptor that senses decreases in blood oxygen to increase breathing in hypoxia.
Oxygen regulation of breathing through an olfactory receptor activated by lactate.
Specimen part
View SamplesThe carotid body is a chemoreceptor that senses decreases in blood oxygen to increase breathing in hypoxia. To look for candidate oxygen sensors in the carotid body, we compared the gene expression of the carotid body to the adrenal medulla, a similar tissue that does not have oxygen sensitivity in adults. Overall design: For each sample, we pooled 18 carotid bodies and 10 adrenal medullas from 10 adult mice.
Oxygen regulation of breathing through an olfactory receptor activated by lactate.
Specimen part, Cell line, Subject
View SamplesEpithelial Hedgehog (Hh) ligands regulate several aspects of fetal intestinal organogenesis and emerging data implicate the Hh pathway in inflammatory signaling in adult colon. We investigated the effects of chronic Hh inhibition in vivo and profiled molecular pathways acutely modulated by Hh signaling in the intestinal mesenchyme.
Hedgehog is an anti-inflammatory epithelial signal for the intestinal lamina propria.
Specimen part
View SamplesWe examined mRNA level changes in two mouse enteroids clones expressing different levels of PLAGL2 from a constitutive Piggybac transposon vector. Overall design: Expression analysis, PLAGL2 O/E vs. GFP O/E
The Zinc Finger Transcription Factor PLAGL2 Enhances Stem Cell Fate and Activates Expression of ASCL2 in Intestinal Epithelial Cells.
Specimen part, Cell line, Subject
View SamplesTo study mechanisms of long bone growth regulation, p21 misexpression was induced in the left hindlimb of mouse embryos using an intersectional approach that requires both Cre and (r)tTA activity. Doxycycline was provided to the pregnant female at embryonic day (E)12.5 to activate the transgene, and embryos were collected at E17.5. Distal femur and proximal tibia growth plates were dissected out, keeping left and right separated, deprived of perichondrium and flash frozen. After RNA extraction, mRNA libraries were prepared and all samples were deep sequenced in parallel Overall design: 6 samples (left and right growth plates from embryos #386, #387, #388) were sequenced in parallel
Cell-nonautonomous local and systemic responses to cell arrest enable long-bone catch-up growth in developing mice.
Specimen part, Subject
View SamplesWe used microarrays to assess gene expression differences in the hippocampus between FoxO6 mutant and wild-type siblings before (basal) or after novel object learning.
FoxO6 regulates memory consolidation and synaptic function.
Sex, Time
View SamplesWe report that combining NGN2 programming with SMAD and WNT inhibition generates patterned induced neurons (hpiNs).Transcriptional analyses showed that hpiN cultures contained cells along a developmental continuumranging from poorly differentiated neuronal progenitors to well-differentiated, excitatory glutamatergic neurons. The most differentiated neurons could be identified using a CAMK2A::GFP reporter gene. Overall design: RNA sequencing analysis (population and single cell) over hpiNs differentiation time (D0 through D49 after induction). Two independent iPS lines, 9 time points, three replicates each.
Combining NGN2 Programming with Developmental Patterning Generates Human Excitatory Neurons with NMDAR-Mediated Synaptic Transmission.
Specimen part, Disease, Cell line, Subject, Time
View SamplesPleomorphic adenoma gene 1 (PLAG1) encodes a transcription factor involved in cancer and growth. We study the role of PLAG1 in preimplantation embryos using STRT RNA-seq of single embryos from wild type and knockout mothers (both mated with wild type studs). The lack of maternal Plag1 led to delayed mouse 2-cell stage embryo development, compensatory expression of Plag1 from the paternal allele, and dysregulation of 1,089 genes. Half of these genes displayed a pattern of delayed activation and play roles in ribosome biogenesis and protein synthesis. These mouse genes further showed a significant overlap with human EGA genes with similar ontology, and an enrichment of the PLAG1 de novo motif. We conclude that Plag1 affects EGA through retrotransposons influencing ribosomes and protein synthesis, a mechanism that might also explain its roles in cancer and growth Overall design: Single wild type and maternal Plag1 knockout embryos at MII, 2-cell and 8-cell stage development in 14-16 biologicla replicas per developmental stage and genotype.
Pleomorphic Adenoma Gene 1 Is Needed For Timely Zygotic Genome Activation and Early Embryo Development.
Subject
View Samples