Exercise induces skeletal muscle adaptation, and the p38 mitogen-activated protein kinase signaling pathway is thought to play an important role in the adaptive processes. We have obtained new evidence that the gamma isoform of p38 is required for exercise-induced metabolic adaptation in skeletal muscle; however, the neuromuscular activity-dependent target genes of p38gamma remain to be defined.
p38gamma mitogen-activated protein kinase is a key regulator in skeletal muscle metabolic adaptation in mice.
Age, Specimen part
View SamplesTo determine how aging impacts gene expression in hematopoietic stem cells (HSCs), human CD34+ cells from bone marrow (34BM) and mobilized stem cell products (34P38NPBSC) were examined using microarray-based expression profiling. Differential expression changes were confirmed by microarray comparisons of younger and older expanded T-cell populations.
Decreased IRF8 expression found in aging hematopoietic progenitor/stem cells.
No sample metadata fields
View SamplesExpression profiles of acute myeloid leukemia patient samples.
Identification of genes with abnormal expression changes in acute myeloid leukemia.
No sample metadata fields
View SamplesAcute myeloid leukemia (AML) is one of the most common and deadly forms of hematopoietic malignancies. We hypothesized that microarray studies could identify previously unrecognized expression changes that only occur only in AML blasts. We were particularly interested in those genes with increased expression in AML, believing that these genes may be potential therapeutic targets.
Identification of genes with abnormal expression changes in acute myeloid leukemia.
Sex, Disease
View SamplesTo identify gene expression that distinguishes hematopoietic cells that express PRAME from those that do not, normal CD34+ cells with forced PRAME expression were compared to cells without PRAME expression in culture over time (days 4, 7, 14) using Affymetrix HU-133A microarrays
The preferentially expressed antigen in melanoma (PRAME) inhibits myeloid differentiation in normal hematopoietic and leukemic progenitor cells.
Specimen part, Time
View SamplesLow-oxygen stress associated with natural phenomena such as waterlogging, results in widespread transcriptome changes and a metabolic switch from aerobic respiration to anaerobic fermentation. High-throughput sequencing of small RNA libraries obtained from low-oxygen stressed and control root tissue identified a total of 65 unique microRNA (miRNA) sequences from 46 families, and 14 trans-acting small interfering RNA (tasiRNA) from 3 families. Low-oxygen stress resulted in changes to the abundance of 46 miRNAs from 19 families, and all 3 tasiRNA families. Chemical inhibition of mitochondrial respiration caused similar changes in expression in a majority of the low-oxygen responsive small RNAs analysed. Our data indicate that miRNAs and tasiRNAs play a role in gene regulation and possibly developmental responses to low oxygen, and that a major signal for these responses is likely to be dependent on mitochondrial function. Keywords: Small RNA transcriptome analysis Overall design: Examination of root tissue under 2 different environments, control and low oxygen
Hypoxia-responsive microRNAs and trans-acting small interfering RNAs in Arabidopsis.
Age, Subject
View SamplesThe purpose of this study was to identify gene expression changes associated with congenital lung malformations.
Novel Molecular and Phenotypic Insights into Congenital Lung Malformations.
Sex, Age, Specimen part, Subject
View SamplesEffect on the transcriptome of an insertion in the gene At3g08610 encoding a subunit of mitochondrial complex I
Remodeled respiration in ndufs4 with low phosphorylation efficiency suppresses Arabidopsis germination and growth and alters control of metabolism at night.
Age, Specimen part, Time
View SamplesRegulation of carotenoid composition and shoot branching in Arabidopsis by a chromatin modifying histone methyltransferase, SDG8<br></br>Comparison of transcript profiles between wild type Columbia and ccr1 (carotenoid and chloroplast regulatory) mutant, which contains a mutation in At1g77300 (SDG8)
Regulation of carotenoid composition and shoot branching in Arabidopsis by a chromatin modifying histone methyltransferase, SDG8.
Age
View Samples4 week old Arabidopsis plants, of ecotype Columbia, SALK_084897 or SAIL_303_D08 were either grown under normal conditions or grown under normal conditions for before having a moderate light and drought treatment applied. Light and drought treatment was applied by withholding water for 5 days prior to transfer to 300 uE m-2 s-1 light conditions. Samples were collected after 3 days of treatment or for the same age plants grown under normal conditions.
The absence of ALTERNATIVE OXIDASE1a in Arabidopsis results in acute sensitivity to combined light and drought stress.
No sample metadata fields
View Samples