This SuperSeries is composed of the SubSeries listed below.
ACSL1 Is Associated With Fetal Programming of Insulin Sensitivity and Cellular Lipid Content.
Sex
View SamplesWe hypothesised that SGA as a proxy for intrauterine growth restriction promotes specific epigenetic marks and pathways, whose physiological implications may become apparent only in the fully differentiated state.
ACSL1 Is Associated With Fetal Programming of Insulin Sensitivity and Cellular Lipid Content.
Sex
View SamplesWe hypothesised that SGA as a proxy for intrauterine growth restriction promotes specific epigenetic marks and pathways, whose physiological implications may become apparent only in the fully differentiated state.
ACSL1 Is Associated With Fetal Programming of Insulin Sensitivity and Cellular Lipid Content.
Sex
View SamplesHistological grading of breast cancer defines morphological subtypes informative of metastatic potential, although not without considerable inter-observer disagreement and clinical heterogeneity particularly among the moderately differentiated grade II (G2) tumors. We posited that a gene expression signature capable of discerning tumors of grade I (G1) and grade III (G3) histology might provide a more objective measure of grade with prognostic benefit for patients with moderately differentiated disease. To this end, we studied the expression profiles of 347 primary invasive breast tumors analyzed on Affymetrix microarrays. Using class prediction algorithms, we identified 264 robust grade-associated markers, six of which could accurately classify G1 and G3 tumors, and separate G2 tumors into two highly discriminant classes (termed G2a and G2b genetic grades) with patient survival outcomes highly similar to those with G1 and G3 histology, respectively. Statistical analysis of conventional clinical variables further distinguished G2a and G2b subtypes from each other, but also from histologic G1 and G3 tumors. In multivariate analyses, genetic grade was consistently found to be an independent prognostic indicator of disease recurrence comparable to that of lymph node status and tumor size. When incorporated into the Nottingham Prognostic Index, genetic grade enhanced detection of patients with less harmful tumors, likely to benefit little from adjuvant therapy. Our findings show that a genetic grade signature can improve prognosis and therapeutic planning for breast cancer patients, and support the view that low and high grade disease, as defined genetically, reflect independent pathobiological entities rather than a continuum of cancer progression. Three separate breast cancer cohorts were analyzed: 1) Uppsala (n=249), 2) Stockholm (n=58), 3) Singapore (n=40). The Uppsala and Singapore data can be accessed here. The Stockholm cohort data can be accessed at GEO Series GSE1456.
Genetic reclassification of histologic grade delineates new clinical subtypes of breast cancer.
Age, Disease stage
View SamplesThe biological tumor samples (ie, breast tumor specimens) consisted of freshly frozen breast tumors from a population-based cohort of 315 women representing 65% of all breast cancers resected in Uppsala County, Sweden, from January 1, 1987 to December 31, 1989. Estrogen receptor status was determined by biochemical assay as part of the routine clinical procedure. An experienced pathologist determined the Elston-Ellis grades of the tumors, classifying the tumors into low, medium and high-grade tumors. The clinico-pathological characteristics accompanying each tumor include p53 status, ER status, tumor grade, lymph node status and patient age.
An expression signature for p53 status in human breast cancer predicts mutation status, transcriptional effects, and patient survival.
No sample metadata fields
View SamplesTo investigate the role of transcriptional factors Gcn4, Leu3, Gat1 and Met31 in the response to 3AT-induced amino acid starvation, we performed time-course microarray studies of wild-type, single deletion and double deletion strains. The analyses provide insight into a complex regulatory response involving at least four transcription factors.
No associated publication
Treatment
View SamplesThis SuperSeries is composed of the SubSeries listed below.
No associated publication
Specimen part, Disease stage, Cell line
View SamplesAnalysis of differentially regulated genes in patients normal and colorectal tumor samples. The aim of this study was to identify genes that were differentially up- or down-regulated in the tumor samples as compared to the normal colon tissue
No associated publication
Specimen part, Disease stage
View SamplesAnalysis of effect of S-phase arrest and replication checkpoint activation on differentiating hESCs at the gene expression level. The hypothesis tested in the present study was that replication checkpoint activation prevents the exit from pluripotency in hESCs. Results provide important information of the response of hESCs to replication arrest, such as upregulation of genes involved in the TGF-beta signaling pathway, and subsequent maintenance of pluripotency marker expression.
Deterministic Restriction on Pluripotent State Dissolution by Cell-Cycle Pathways.
No sample metadata fields
View SamplesThis SuperSeries is composed of the SubSeries listed below.
Distal airway stem cells yield alveoli in vitro and during lung regeneration following H1N1 influenza infection.
Specimen part
View Samples