This SuperSeries is composed of the SubSeries listed below.
Zbtb46 expression distinguishes classical dendritic cells and their committed progenitors from other immune lineages.
Specimen part
View SamplesThis SuperSeries is composed of the SubSeries listed below.
Dual actions of Meis1 inhibit erythroid progenitor development and sustain general hematopoietic cell proliferation.
Specimen part, Treatment
View SamplesThe homeodomain protein Meis1 is essential for definitive hematopoiesis and vascular patterning in the mouse embryo. Meis2, another member of the same family, shares 82% protein identities with Meis1. Our present study suggested Meis2 exerts two distinguishable effects in differentiating ES cells. First, it increases the numbers of hematopoietic progenitors and extends their persistence in culture. Second, Meis2 skews hematopoietic differentiation by suppressing erythroid while enhancing megakaryocytic progenitor differentiation. To identify the underlying transcriptional bases of these actions, we carried out microarray analysis to compare the various populations of cells developing in ES differentiation cultures in the presence and absence of Meis2 induction.
Dual actions of Meis1 inhibit erythroid progenitor development and sustain general hematopoietic cell proliferation.
Specimen part, Treatment
View SamplesThe homeodomain protein Meis1 is essential for definitive hematopoiesis and vascular patterning in the mouse embryo. Our present study suggested it exerts two distinguishable effects in differentiating ES cells. First, it increases the numbers of hematopoietic progenitors and extends their persistence in culture. Second, Meis1 skews hematopoietic differentiation by suppressing erythroid while enhancing megakaryocytic progenitor differentiation. To identify the underlying transcriptional bases of these actions, we carried out microarray analysis to compare the various populations of cells developing in ES differentiation cultures in the presence and absence of Meis1 induction.
Dual actions of Meis1 inhibit erythroid progenitor development and sustain general hematopoietic cell proliferation.
Specimen part, Treatment
View SamplesPreviously, we reported that the transcription factor Mesp1 promotes the cell fates of cardiomyocytes, smooth muscle, and vascular endothelium. Recently, hematopoietic stem cells (HSCs) were shown to derive from hemogenic endothelium. Since Mesp1 regulates development of endothelium, it potentially could influence gene expression related to hematopoietic development.
Dual actions of Meis1 inhibit erythroid progenitor development and sustain general hematopoietic cell proliferation.
Specimen part, Treatment
View SamplesCurrent systems for conditional gene deletion within mouse macrophage lineages are limited by ectopic activity or low efficiency; we generated a Mafb-driven Cre strain to determine whether any dendritic cells (DCs) identified by Zbtb46-GFP expression originate from a Mafb-expressing population
Mafb lineage tracing to distinguish macrophages from other immune lineages reveals dual identity of Langerhans cells.
Specimen part
View Samples17-estradiol (E2) exerts complex and context-dependent effects in pulmonary hypertension. In hypoxia-induced pulmonary hypertension (HPH), E2 attenuates lung vascular remodeling through estrogen receptor (ER)-dependent effects; however, ER target genes in the hypoxic lung remain unknown. In order to identify the genome regulated by the E2-ER axis in the hypoxic lung, we performed a microarray analysis in lungs from HPH rats treated with E2 (75 mcg/kg/d) ER-antagonist ICI182,780 (3 mg/kg/d). Untreated HPH rats and normoxic rats served as controls. Using a false discovery rate of 10%, we identified a significantly differentially regulated genome in E2-treated vs. untreated hypoxia rats. Genes most up-regulated by E2 encoded matrix metalloproteinase 8, S100 calcium binding protein A8, and IgA Fc receptor; genes most down-regulated by E2 encoded olfactory receptor 63, secreted frizzled-related protein 2, and thrombospondin 2. Several genes affected by E2 changed in the opposite direction after ICI182,780 co-treatment, indicating an ER-regulated genome in HPH lungs. The bone morphogenetic protein antagonist Grem1 (gremlin 1) was up-regulated by hypoxia, but found to be among the most down-regulated genes after E2 treatment. Gremlin 1 protein was reduced in E2-treated vs. untreated hypoxic animals, and ER-blockade abolished the inhibitory effect of E2 on Grem1 mRNA and protein. In conclusion, E2 ER-dependently regulates several genes involved in proliferative and inflammatory processes during hypoxia. Gremlin 1 is a novel target of the E2-ER axis in HPH. Understanding the mechanisms of E2 gene regulation in HPH may allow for selectively harnessing beneficial transcriptional activities of E2 for therapeutic purposes.
Estrogen receptor-dependent attenuation of hypoxia-induced changes in the lung genome of pulmonary hypertension rats.
Treatment
View SamplesAnalysis of stage-specific gene expression in Zbtb46GFP/+ pre-CD8 DCs, pre-CD4 DCs, CD24 cDCs and CD172a cDCs
Batf3 maintains autoactivation of Irf8 for commitment of a CD8α(+) conventional DC clonogenic progenitor.
Specimen part
View Samples10 + 10 Holstein x Charolais F2 cattle were assigned to 2 groups with high and low IMF content, respectively; Musculus longissimus dorsi mRNA expression was determined by microarray analysis
Gene expression profile of Musculus longissimus dorsi in bulls of a Charolais × Holstein F2-cross with divergent intramuscular fat content.
Specimen part
View SamplesMicroarray gene expression profiling to identify differentially regulated genes in Musculus longissimus dorsi (MLD) of Japanese Black (JB) steers compared to Holstein steers (HS)
Transcriptome profiling of Musculus longissimus dorsi in two cattle breeds with different intramuscular fat deposition.
Sex, Specimen part
View Samples