To understand molecular mechanisms by which reducing Id2 rescues impaired erythropoiesis and hematopoietic progenitor cell development in Gfi-1-/- mice, we compared gene expression in Gfi-1-/-;Id2+/- and Gfi-1-/- BMC using Affymetrix microarray.
Gfi-1 regulates the erythroid transcription factor network through Id2 repression in murine hematopoietic progenitor cells.
Specimen part
View SamplesCdca7l acts as a male-specific oncogene in astrocytoma and glioblastoma, and can transform primary astrocyte growth in soft agar. We stably overexpressed Cdca7l in mouse primary astrocytes and compared gene expression to primary astrocytes expressing empty vector control in male and female cell to identify gene expression differences between male and female cells and between Cdca7l-overexpressing and normal primary astrocytes.
No associated publication
Sex, Specimen part
View SamplesCdca7l is expressed higher in male astrocytoma/GBM than female tumors or normal cells, and knockdown of Cdca7l blocks growth of male tumor cells, but not female tumor cells. We stably depleted Cdca7l in mouse astrocytoma cells and compared gene expression to control astrocytoma cells expressing non-targeting scrambled shRNA in male and female cells and to wild type primary astrocytes to identify gene expression differences between male and female cells and between Cdca7l-depleted, scrambled shRNA control cells and wild type primary astrocytes.
No associated publication
Sex
View SamplesCDCA7L is expressed higher in male astrocytoma/GBM than female tumors or normal cells, and knockdown of CDCA7L blocks growth of male tumor cells, but not female tumor cells. We stably depleted CDCA7L in human GBM cells and compared gene expression to control GBM cells expressing non-trageting scrambled shRNA in male and female cells to identify gene expression differences between male and female cells and between CDCA7L-depleted and scrambled shRNA control cells.
No associated publication
Sex
View SamplesOne hundred and seven lung Squamous Cell Carcinomas collected from early stage (stage I+II; AJCC 7th edition) patients at the National Cancer Center Hospital (Tokyo, Japan) between 1997 and 2008 were hybridized to the Human Transcriptome (HT) Array 2.0
A Two-Gene Prognostic Classifier for Early-Stage Lung Squamous Cell Carcinoma in Multiple Large-Scale and Geographically Diverse Cohorts.
Sex, Age, Specimen part
View SamplesTobacco smoking is responsible for over 90% of lung cancer cases, and yet the precise molecular alterations induced by smoking in lung that develop into cancer and impact survival have remained obscure. We performed gene expression analysis using HG-U133A Affymetrix chips on 135 fresh frozen tissue samples of adenocarcinoma and paired noninvolved lung tissue from current, former and never smokers, with biochemically validated smoking information. ANOVA analysis adjusted for potential confounders, multiple testing procedure, Gene Set Enrichment Analysis, and GO-functional classification were conducted for gene selection. Results were confirmed in independent adenocarcinoma and non-tumor tissues from two studies. We identified a gene expression signature characteristic of smoking that includes cell cycle genes, particularly those involved in the mitotic spindle formation (e.g., NEK2, TTK, PRC1). Expression of these genes strongly differentiated both smokers from non-smokers in lung tumors and early stage tumor tissue from non-tumor tissue (p<0.001 and fold-change>1.5, for each comparison), consistent with an important role for this pathway in lung carcinogenesis induced by smoking. These changes persisted many years after smoking cessation. NEK2 (p<0.001) and TTK (p=0.002) expression in the noninvolved lung tissue was also associated with a 3-fold increased risk of mortality from lung adenocarcinoma in smokers. Our work provides insight into the smoking-related mechanisms of lung neoplasia, and shows that the very mitotic genes known to be involved in cancer development are induced by smoking and affect survival. These genes are candidate targets for chemoprevention and treatment of lung cancer in smokers.
Gene expression signature of cigarette smoking and its role in lung adenocarcinoma development and survival.
Sex, Age
View SamplesMany preclinical therapy studies have focused on a small number of well-described mouse allograft or human xenograft models that poorly represent the heterogeneity of human disease. Here we have assembled a panel of mouse mammary cell lines that metastasize in syngeneic mouse hosts and we have assessed gene expression programs in the untreated primary tumors with the goal of generating information that may be useful to the identification of biomarkers that predict response to therapeutic intervention.
No associated publication
No sample metadata fields
View SamplesThe expression array data will be merged with Rel-B ChIP-Seq data in HL cell lines. This will show REL-B direct and indirect controlled downstream target genes
No associated publication
Cell line, Treatment
View SamplesThis SuperSeries is composed of the SubSeries listed below.
No associated publication
Specimen part
View SamplesThe human hair follicle bulge is an important niche for keratinocyte stem cells (KSC). Elucidation of human bulge cell biology could be facilitated by analysis of global gene expression profiles and identification of unique cell surface markers. The lack of distinctive bulge morphology in human hair follicles has hampered studies of bulge cells and KSC. In this study, we determined the distribution of label-retaining cells to carefully define the human anagen bulge. Using navigated-laser capture microdissection, bulge cells and outer root sheath cells from other follicle regions were obtained and analyzed with cDNA microarrays. Gene transcripts encoding inhibitors of WNT and Activin/BMP signaling were over-represented in the bulge while genes responsible for cell proliferation were under-represented, consistent with quiescent non-cycling KSC in anagen follicles. Positive markers for bulge cells included CD200, PHLDA1, follistatin, and frizzled homolog 1 while CD24, 34, 71 and 146 were preferentially expressed by non-bulge keratinocytes. Importantly, CD200+ cells (CD200hi24lo34lo71lo146lo) obtained from hair follicle suspensions demonstrated high colony forming efficiency in clonogenic assays, indicating successful enrichment of living human bulge stem cells.
Characterization and isolation of stem cell-enriched human hair follicle bulge cells.
No sample metadata fields
View Samples