Study investigating responses of lung to sub-clinical antenatal steroid (betamethasone phosphate) exposure
No associated publication
Treatment
View Samplesstudy investigating the initiation of systemic inflammatory signaling in fetuses exposed to TLR-4 agonist lipopolysaccharides from E.coli
Outside-in? Acute fetal systemic inflammation in very preterm chronically catheterized sheep fetuses is not driven by cells in the fetal blood.
Specimen part, Treatment
View SamplesStudy investigating the initiation of systemic inflammatory signaling in fetuses exposed to TLR-4 agonist lipopolysaccharides from E.coli.
No associated publication
Treatment
View SamplesWith the aim of identifying new pathways and genes regulated by PTH(1-34) and PTH-related protein 1-141 [PTHrP(1-141)] in osteoblasts, this study was carried out using a mouse marrow stromal cell line, Kusa 4b10, that acquires features of the osteoblastic phenotype in long-term culture conditions. After the appearance of functional PTH receptor 1 (PTHR1) in Kusa 4b10 cells, they were treated with either PTH(1-34) or PTHrP(1-141), and RNA was subjected to Affymetrix whole mouse genome array.
EphrinB2 regulation by PTH and PTHrP revealed by molecular profiling in differentiating osteoblasts.
Specimen part, Cell line
View SamplesThis SuperSeries is composed of the SubSeries listed below.
Adenosine-to-inosine RNA editing by ADAR1 is essential for normal murine erythropoiesis.
Sex, Specimen part
View SamplesErythroid progenitors purified from EpoRCreR26eYFPADAR1fl/- and EpoRCreR26eYFPADAR1fl/+ control mice were compared for global gene array profiles
Adenosine-to-inosine RNA editing by ADAR1 is essential for normal murine erythropoiesis.
Specimen part
View SamplesExpression analysis of OS tumors with shRNA knockdown of PTHR1
No associated publication
Specimen part, Cell line
View SamplesThis SuperSeries is composed of the SubSeries listed below.
No associated publication
Sex, Age, Cell line
View SamplesPurpose: We have used microarrays to identify gene expression profiles that distinguish mouse OS cells from normal pre-osteoblast cells and mature osteoblast cells.
Wnt inhibitory factor 1 (WIF1) is a marker of osteoblastic differentiation stage and is not silenced by DNA methylation in osteosarcoma.
Sex, Cell line
View SamplesExpression analysis from two genetically engineered mouse models of osteosarcoma determine the expression profile of mouse osteosarcoma Human osteosarcoma (OS) is comprised of three different subtypes: fibroblastic, chondroblastic and osteoblastic. We previously generated a mouse model of fibroblastic OS by conditional deletion of p53 and Rb in osteoblasts. Here we report an accurate mouse model of the osteoblastic subtype using shRNA-based suppression of p53. Like human OS, tumors frequently present in the long bones and preferentially disseminate to the lungs; features less consistently modeled using Cre:lox approaches. Our approach allowed direct comparison of the in vivo consequences of targeting the same genetic drivers using different technology. This demonstrated that the effects of Cre:lox and shRNA mediated knock-down are qualitatively different, at least in the context of osteosarcoma. Through the use of complementary genetic modification strategies we have established a model of a distinct clinical subtype of OS that was not previously represented and more fully recapitulated the clinical spectrum of this human tumor.
Modeling distinct osteosarcoma subtypes in vivo using Cre:lox and lineage-restricted transgenic shRNA.
Specimen part
View Samples