ATFS-1 has been shown to regulate transcription of mitochondrial chaperone genes such as mtHsp70/hsp-6 and hsp-60 in response to mitocondrial stress. To identify the entire ATFS-1-mediated response, we compared the transcript profiles from wild-type and atfs-1(tm4525) worms raised in the absence and presence of mitochondrial stress.
Mitochondrial import efficiency of ATFS-1 regulates mitochondrial UPR activation.
Specimen part
View SamplesImmunodeficient mouse models have been valuable for studies of human hematopoiesis, but high-fidelity recapitulation of erythropoiesis in most xenograft recipients remains elusive. Recently developed immunodeficient and Kit mutant mice, however, have provided a suitable background to achieve higher-level human erythropoiesis after long-term hematopoietic engraftment. While there has been some characterization of human erythropoiesis in these models, a comprehensive analysis of various developmental stages has not yet been reported. Here, we have utilized cell surface phenotypes, morphologic analyses, and molecular studies to fully characterize human erythropoiesis from multiple developmental stages in immunodeficient and Kit mutant mouse models following long-term hematopoietic stem and progenitor cell engraftment. We show that human erythropoiesis in such models demonstrates complete maturation and enucleation, as well as developmentally appropriate globin gene expression. These results provide a framework for future studies to utilize this model system for interrogating disorders affecting human erythropoiesis and for developing improved therapeutic approaches. Overall design: (mRNA-seq) RNA-seq of human CD235a+ cells isolated 14-16 weeks post-implantation from mouse bone marrow were performed for three biological replicates each of mice xenograted with adult bone marrow-derived human CD34+ cells and cord blood-derived CD34+ cells.
Developmentally-faithful and effective human erythropoiesis in immunodeficient and Kit mutant mice.
Specimen part, Subject
View SamplesGene expression profiling of normal hematopoietic cell subpopulations
Gene expression signatures in childhood acute leukemias are largely unique and distinct from those of normal tissues and other malignancies.
Specimen part
View SamplesThe study was performed to determine if there were alterations in the total RNA pool among the epidermal keratinocytes of K14 promotor-driven noggin overexpression compared with K14 promotor-driven BMP4 overexpression transgenic animals, which will directly relate to cellular chemistry and immune and sensory function. The total study is also aimed at determining alterations of transcrption factors and/or regulation of gene function, including methylation states and micro RNA control in keratinocytes following sensory challenge, particularly neuropathic and chronic pain conditions.
Keratinocyte expression of calcitonin gene-related peptide β: implications for neuropathic and inflammatory pain mechanisms.
Specimen part
View SamplesAndrogen receptor (AR) is a ligand-dependent transcription factor that plays a key role in the onset and progression of prostate cancer. We investigated AR-induced gene expression in prostate cancer cells LNCaP and abl by transfecting siAR / siControl or treating cells with androgen (DHT) over a time course.
Androgen receptor regulates a distinct transcription program in androgen-independent prostate cancer.
No sample metadata fields
View SamplesInflammatory Bowel Diseases are associated with marked alterations of IECs with a subsequent loss of barrier function.
Rho-A prenylation and signaling link epithelial homeostasis to intestinal inflammation.
Specimen part
View SamplesPrenylation is a post-translational modification of proteins consisting on the attachment of a lipid residue (isoprenoid). GGTase-I is one of the prenyltransferases catalyzing prenylation.
Rho-A prenylation and signaling link epithelial homeostasis to intestinal inflammation.
Specimen part
View SamplesLRF, which is encoded by the ZBTB7A gene and formerly known as POKEMON (POK erythroid myeloid ontogenic factor), was originally identified as a PLZF (promyelocytic leukemia zinc finger) homologue interacting with BCL6 (B-cell lymphoma 6). LRF is a transcription factor that is broadly expressed in hematopoietic lineage cells, but its expression is particularly high in erythroblasts and germinal center (GC) B-cells. The goal of this study is to assess the effect of LRF loss on the LT-HSC transcriptome. Nine days after injection of adult mice with polyinosinic polycytidylic acid (pIpc) to activate Cre, total RNAs were isolated from double-sorted LT-HSCs from LRF Flox/+ Mx1-Cre+ and LRF Flox/Flox Mx1-Cre+ mice and processed for microarray analysis.
LRF-mediated Dll4 repression in erythroblasts is necessary for hematopoietic stem cell maintenance.
Age, Specimen part, Time
View SamplesWe measured gene expression across the whole genome in a panel of lines selected for a wing shape trait (angular offset). The lines were created in separate experiments, originating from two widely separated populations, and including multiple replicates of one population, but all were created using the same selection regime and trait. Here we evaluate the data with two objectives: 1) to identify candidate wing shape genes for future testing and validation, and 2) to assess variation among lines in the outcome of identical selection regimes
Microarray analysis of replicate populations selected against a wing-shape correlation in Drosophila melanogaster.
No sample metadata fields
View SamplesThe hormone prolactin is implicated in the pathogenesis of breast cancer, and a subset of prolactin-induced gene expression is mediated by HDAC6 activity.
HDAC6 Deacetylates HMGN2 to Regulate Stat5a Activity and Breast Cancer Growth.
Sex, Specimen part, Cell line
View Samples