We use gene expression data to provide a three-faceted analysis on the links between molecular subclasses of glioblastima, epithelial-to mesenchymal transition (EMT) and CD133 cell surface protein. The contribution of this paper is three-folded: First, we used a newly identified signature for epithelial-to-mesenchymal transition in human mammary epithelial cells, and demonstrated that genes in this signature have significant overlap with genes differentially expressed in all known GBM subtypes. However, the overlap between the genes up-regulated in the mesenchymal subtype of GBM and in the EMT signature was more significant than other GBM subtypes. Second, we provided evidence that there is a negative correlation between the genetic signature of EMT and that of CD133 cell surface protein, a putative marker for neural stem cells. Third, we studied the correlation between GBM molecular subtypes and the genetic signature of CD133 cell surface protein. We demonstrated that the mesenchymal and neural subtypes of GBM have the strongest correlations with the CD133 genetic signature. While the mesenchymal subtype of GBM demonstrates similarity with the signatures of both EMT and CD133, it also demonstrates some differences with each of these signatures that is partly due to the fact that the signatures of EMT and CD133 are inversely related to each other. Taken together this data sheds light on role of the mesenchymal transition and neural stem cells, and their mutual interaction, in molecular subtypes of glioblastoma multiforme.
Investigating the link between molecular subtypes of glioblastoma, epithelial-mesenchymal transition, and CD133 cell surface protein.
Specimen part
View SamplesSwiss-Webster B mouse postnatal day 4-5 primary cerebellar culture (pooled from litter mates) treated with sonic hedgehog (Shh), controls (veh), growth arrested (arrest), cycloheximide (cyc) for 1, 3 and 24 hours.
Identification of genes expressed with temporal-spatial restriction to developing cerebellar neuron precursors by a functional genomic approach.
Specimen part
View SamplesAldosterone is known to have a number of direct adverse effects on the heart, including fibrosis and myocardial inflammation. However, genetic mechanisms of aldosterone action on the heart remain unclear.
Effect of acute aldosterone administration on gene expression profile in the heart.
No sample metadata fields
View SamplesOne third to one half of all infants born before the 28th wek of gestation develop BPD bronchopulmonary dysplasia. Our objective is to evaluate the feasibility of using expression profiling in umbilical cord tissue to discover molecular signatures for developmental staging and for risk of BPD.
Perturbation of gene expression of the chromatin remodeling pathway in premature newborns at risk for bronchopulmonary dysplasia.
No sample metadata fields
View SamplesTranscriptome profile of highly purified multipotential (P), erythroid (E), and myeloid (M) bone marrow progenitors from three RPS19 mutated Diamond-Blackfan anemia and six control human subjects.
Defective ribosomal protein gene expression alters transcription, translation, apoptosis, and oncogenic pathways in Diamond-Blackfan anemia.
Sex, Age, Specimen part, Disease, Subject
View SamplesAffymetrix MG430 2.0 expression levels of wild-type (STHdhQ7/Q7), 3NP-treated wild-type (STHdhQ7/Q7+3-NP), and mutant (STHdhQ111/Q111) striatal cells
Unbiased gene expression analysis implicates the huntingtin polyglutamine tract in extra-mitochondrial energy metabolism.
No sample metadata fields
View SamplesWe generated gene expression profiles of 5 time points in murine lung development (E11.5, E13.5, E14.5, E16.5 and P5). The goal of this study was to establish a reference data set for exploration of large-scale similarities between transcriptomes in development and cancer.
Analysis of gene expression in a developmental context emphasizes distinct biological leitmotifs in human cancers.
No sample metadata fields
View SamplesTo better understand the temporal dynamics of gene expression during normal murine lung development we characterized global gene expression at 26 time points in three common inbred strains of mice (A/J, C57BL/6J, and C3H/HeJ). The data set provides a unique resource for identifying patterns of gene expression changes during normal lung development and for investigating the developmental origins of respiratory disease.
Temporal dynamics of the developing lung transcriptome in three common inbred strains of laboratory mice reveals multiple stages of postnatal alveolar development.
Specimen part
View Samplesmolecular profiles (HG-U95B,C,D,E) of biopsy skeletal muscle samples obtained from 10 normal individuals and 10 DMD patients
Gene expression profiling of Duchenne muscular dystrophy skeletal muscle.
No sample metadata fields
View SamplesIdentification of common mechanisms underlying organ development and primary tumor formation should yield new insights into tumor biology and facilitate the generation of relevant cancer models. We have developed a novel method to project the gene expression profiles of medulloblastomas (MBs)human cerebellar tumorsonto a mouse cerebellar development sequence: postnatal days 1-60 (P1-P60). Genomically, human medulloblastomas were closest to mouse P1-P10 cerebella, and normal human cerebella were closest to mouse P30-P60 cerebella. Furthermore, metastatic MBs were highly associated with mouse P5 cerebella, suggesting that a clinically distinct subset of tumors is identifiable by molecular similarity to a precise developmental stage. Genewise, down- and up-regulated MB genes segregate to late and early stages of development, respectively. Comparable results for human lung cancer vis-a-vis the developing mouse lung suggest the generalizability of this multiscalar developmental perspective on tumor biology. Our findings indicate both a recapitulation of tissue-specific developmental programs in diverse solid tumors and the utility of tumor characterization on the developmental time axis for identifying novel aspects of clinical and biological behavior.
Conserved mechanisms across development and tumorigenesis revealed by a mouse development perspective of human cancers.
No sample metadata fields
View Samples