This SuperSeries is composed of the SubSeries listed below.
The oscillating miRNA 959-964 cluster impacts Drosophila feeding time and other circadian outputs.
Specimen part
View SamplesUsing high throughput sequencing of Drosophila head RNA, a small set of miRNAs that undergo robust circadian oscillations in levels were discovered. We concentrated on a cluster of six miRNAs, mir-959-964, all of which peak at about ZT12 or lights-off. The data indicate that the cluster pri-miRNA is transcribed under bona fide circadian transcriptional control and that all 6 mature miRNAs have short half-lives, a requirement for oscillating. Manipulation of food intake dramatically affects the levels and timing of cluster miRNA transcription with no more than minor effects on the core circadian oscillator. This indicates that the central clock regulates feeding, which in turn regulates proper levels and cycling of the cluster miRNAs. Viable Gal4 knock-in as well as cluster knock-out and over-expression strains were used to localize cluster miRNA expression as well as explore their functions. The adult head fat body is a major site of expression, and feeding behavior, innate immunity, metabolism, and perhaps stress responses are under cluster miRNA regulation. The feeding behavior results indicate that there is a feedback circuit between feeding time and cluster miRNA function as well as a surprising role of post-transcriptional regulation in these behaviors and physiology.
The oscillating miRNA 959-964 cluster impacts Drosophila feeding time and other circadian outputs.
Specimen part
View SamplesWe found that mice deficient in both IRF-4 and IRF-8 develop from a very early age a more aggressive CML-like disease than mice deficient in IRF-8 alone. IRF-4 deficiency dramatically enhanced the effect of IRF-8 deficiency on expansion of granulocyte-monocyte progenitors (GMPs). All mice deficient in both IRF-4 and IRF-8 eventually develop and succumb to a B-lymphoblastic leukemia/lymphoma at approximately 25 weeks of age. The results demonstrate that IRF-4 and IRF-8 deficiencies can cooperate in the development of both myeloid and lymphoid tumors.
No associated publication
Sex, Age, Specimen part
View SamplesWe identified 112 known genes and 150 expressed sequence tags (ESTs) showing more than a 1.3 fold change in target-exposed neurons compared to neurons grown in the absence of target. Expression of 36 genes and 49 ESTs was upregulated, while expression of 76 genes and 101 ESTs was downregulated by the presence of target during the culture period. Overall, these changes represented approximately 1.6% of the probe set.
No associated publication
No sample metadata fields
View SamplesJournal : Blood. 2009 Jul 9;114(2):469-77. Epub 2009 May 13.
Endothelial deletion of hypoxia-inducible factor-2alpha (HIF-2alpha) alters vascular function and tumor angiogenesis.
Specimen part
View SamplesComparative analysis can provide important insights into complex biological systems. As demonstrated in the accompanying paper, Translating Ribosome Affinity Purification (TRAP), permits comprehensive studies of translated mRNAs in genetically defined cell populations following physiological perturbations.
Application of a translational profiling approach for the comparative analysis of CNS cell types.
No sample metadata fields
View SamplesThe cellular heterogeneity of the brain confounds efforts to elucidate the biological properties of distinct neuronal populations.
No associated publication
No sample metadata fields
View SamplesThis SuperSeries is composed of the SubSeries listed below.
Transcription factor Zeb2 regulates commitment to plasmacytoid dendritic cell and monocyte fate.
Specimen part, Treatment
View SamplesThe cellular heterogeneity of the brain confounds efforts to elucidate the biological properties of distinct neuronal populations.
A translational profiling approach for the molecular characterization of CNS cell types.
No sample metadata fields
View SamplesThe cellular heterogeneity of the brain confounds efforts to elucidate the biological properties of distinct neuronal populations.
No associated publication
No sample metadata fields
View Samples