Using RNA-seq, we analyzed the transcriptomes of isogenic haploid (MATa) and tetraploid (MATaaaa) budding yeast strains in the Sigma 1278b background and identified genes whose regulation was altered by ploidy. Overall design: Analysis of poly(A)+ RNA from 2 biological replicates of haploid (MATa) and tetraploid (MATaaaa) strains.
Control of transcription by cell size.
Sex, Specimen part, Cell line, Subject
View SamplesTwo human acute lymphoblastic leukemia cell lines (Molt-4 and CCRF-CEM) were treated with direct (A-769662) and indirect (AICAR) AMPK activators. Molt-4 and CCRF-CEM cells were obtained from ATCC (CRL-1582 and CCL-119). Control samples were used for the analysis of metabolic differences between cell lines. Therefore the data was analyzed in combination with, metabolomic data, and the genome-scale reconstruction of human metabolism. For experiments cells were grown in serum-free medium containing DMSO (0.67%) at a cell concentration of 5 x 105 cells/mL.
Prediction of intracellular metabolic states from extracellular metabolomic data.
Cell line, Treatment
View SamplesWe used microarrays to detail the global program of gene expression underlying rRNA processing gene regulation during heat shock. PBF1 is YBL054W (TOD6) and PBF2 is YER088C (DOT6).
High-resolution DNA-binding specificity analysis of yeast transcription factors.
No sample metadata fields
View SamplesTwo major subsets of rat natural killer (NK) cells can be distinguished based on their expression of either the Ly49s3 or the NKR-P1B lectin-like receptor. Ly49s3+ NK cells, but not NKR-P1B+ NK cells, express a wide range of Ly49 receptors.
Two complementary rat NK cell subsets, Ly49s3+ and NKR-P1B+, differ in phenotypic characteristics and responsiveness to cytokines.
Specimen part
View SamplesDiabetes and obesity are widespread diseases with signifciant socioeconomic implications. We used three different types of human adipose tissue (epigastric, visceral, and subcutaneous) in order to determine differences in global gene expression between these adipose depots in severely obese patients.
Gene expression profiling in subcutaneous, visceral and epigastric adipose tissues of patients with extreme obesity.
Specimen part, Race
View SamplesOxidative DNA damage has been associated with cognitive decline. The Ogg1 and Mutyh DNA glycosylases cooperate to prevent mutations caused by 8-oxoG, a major premutagenic oxidative DNA base lesion. Here, we have examined behavior and cognitive function in mice deficient of these glycosylases. We found that Ogg1-/-Mutyh-/- mice were more active and less anxious and that their learning ability was impaired. In contrast, Mutyh-/- mice showed moderately improved memory compared to WT. There was no change in genomic 8-oxoG levels, suggesting that Ogg1 and Mutyh play minor roles in global repair in adult brain. Notably, transcriptome analysis of hippocampus revealed that differentially expressed genes in the mutant mice belong to pathways known to be involved in anxiety and cognitive function. Thus, beyond their involvement in DNA repair, Ogg1 and Mutyh modulate cognitive function and behavior, and related hippocampal gene expression, suggesting a novel role for 8-oxoG in regulating adaptive behavior. Overall design: The mRNA profiles from hippocampus of WT, Ogg1-/-, Mutyh-/- and Ogg1-/- Mutyh-/- C57BL/6 mice at 6month of age were generated by RNA sequencing using Illumina Hiseq 2000
Synergistic Actions of Ogg1 and Mutyh DNA Glycosylases Modulate Anxiety-like Behavior in Mice.
Age, Specimen part, Cell line, Subject
View SamplesBarretts esophagus confers significant risk of esophageal adenocarcinoma. We have established the cloning of patient-matched stem cells of Barretts, gastric, and esophageal epithelium. Barrett's esophagus stem cells (BE), gastric cardia stem cells (GC) and normal esophagus stem cells (Eso) from 12 patients were cloned (For BE: 12 patients, GC: 12 patients and Eso: 2 patients). Keratin 5 positive and Keratin 7 positive cells were cloned from human fetal esophageal epithelium. Using air liquid interface culture system, stem cells were induced to differentiate into mature epithelial structures.
Mutational spectrum of Barrett's stem cells suggests paths to initiation of a precancerous lesion.
Specimen part, Disease, Subject
View SamplesBarretts esophagus confers significant risk of esophageal adenocarcinoma. We have established the cloning of patient-matched stem cells of Barretts, gastric, and esophageal epithelium. Transplantation of transformed Barretts stem cells yielded tumors with hallmarks of esophageal adenocarcinoma, whereas transformed esophageal stem cells produced squamous cell carcinomas. These findings define a stem cell target in a precancerous lesion for preemptive therapies.
Mutational spectrum of Barrett's stem cells suggests paths to initiation of a precancerous lesion.
Specimen part, Disease
View SamplesBarretts esophagus is a precancerous lesion that confers a significant risk of esophageal adenocarcinoma. Strategies for selective eradication of Barretts have been stymied by our inability to identify the Barretts stem cell. Here we employ novel technologies to clone patient-matched stem cells of Barretts, gastric, and esophageal epithelium. Genomic analyses of Barretts stem cells reveal a patient-specific mutational spectrum ranging from low somatic variation similar to patient-matched gastric epithelial stem cells to ones marked by extensive heterozygous alteration of genes implicated in tumor suppression, epithelial planarity, and epigenetic regulation. Transplantation of transformed Barretts stem cells yields tumors with hallmarks of esophageal adenocarcinoma, whereas transformed esophageal stem cells yield squamous cell carcinomas. Thus Barretts develops from cells distinct from local eponymous epithelia, emerges without obvious driver mutations, and likely progresses through and from the generation of dominant clones. These findings define a stem cell target for preemptive therapies of a precancerous lesion.
Mutational spectrum of Barrett's stem cells suggests paths to initiation of a precancerous lesion.
Specimen part, Disease, Disease stage
View SamplesGenes relevant to manifestion of and variation in aggression behavior might be differentially expressed in lines selected for divergent levels of aggression.
Quantitative genomics of aggressive behavior in Drosophila melanogaster.
No sample metadata fields
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