Similar Datasets
Project description:An evaluation of biopsies from patients with in-transit extremity melanoma who have been treated with melphalan in the setting of isolated limb infusion or isolated limb perfusion. Gene expression profiles were obtained from 21 lesions across 19 patients and evaluated for expression that correlated with response to melphalan isolated limb infusion. Chemotherapy response analysis: complete response - CR; partial response - PR; stable disease - SD; progressive disease - PD; not evaluable - n.e.
2011-12-22 | E-GEOD-34599 | biostudies-arrayexpress
Project description:An evaluation of biopsies from patients with in-transit extremity melanoma who have been treated with melphalan in the setting of isolated limb infusion Gene expression profiles were obtained from 52 lesions across 28 patients and evaluated for expression values that correlated with response to melphalan isolated limb infusion
2010-02-26 | GSE19293 | GEO
Project description:An evaluation of biopsies from patients with in-transit extremity melanoma who have been treated with melphalan in the setting of isolated limb infusion or isolated limb perfusion. Gene expression profiles were obtained from 21 lesions across 19 patients and evaluated for expression that correlated with response to melphalan isolated limb infusion.
2011-12-22 | GSE34599 | GEO
Project description:An evaluation of biopsies from patients with in-transit extremity melanoma who have been treated with melphalan in the setting of isolated limb infusion Gene expression profiles were obtained from 52 lesions across 28 patients and evaluated for expression values that correlated with response to melphalan isolated limb infusion Chemotherapy response analysis: complete response - CR; partial response - PR; stable disease - SD; progressive disease - PD. 52 samples.
2010-03-09 | E-GEOD-19293 | biostudies-arrayexpress
Project description:An evaluation of multifocal lesions from patients with in-transit extremity melanoma to determine if all lesions from a patient harbor homogeneous patterns of gene expression Gene expression profiling studies can help guide treatment for cancer patients by providing tools in the form of gene-expression signatures to characterize a tumor in terms of underlying biology, predicted response to therapy, metastatic progression and/or recurrence. The utility of gene signatures for defining therapeutic strategies in the treatment of extremity in-transit melanoma will be dependent on the genetic relationship between the multifocal lesions typically present in this disease and the extent to which a single lesion is representative of residual tumor burden. Using microarray-based gene expression profiling we examined 43 in-transit melanoma lesions across 17 patients with multifocal disease to determine whether one lesion could accurately characterize the underlying biology and genetic profile of a patient's tumor. Principal component analysis, unsupervised hierarchical clustering, one-way analysis of variance (ANOVA) and gene signatures predictive of chemosensitivity and oncogenic pathway activation showed gene expression patterns to be highly similar (p-values: <0.006; average r = 0.979) between lesions from a single patient but to be significantly different across patients (p<0.05). These findings demonstrate that individual melanoma tumor nodules in patients with multifocal disease are genetically similar and a single lesion can be used to predict response to chemotherapy, evaluate the activation status of oncogenic signaling pathways and characterize other aspects of the biology of an individual patient's disease. These results will facilitate the utilization of gene expression profiling in clinical trials of targeted therapy in melanoma allowing for more rational identification of candidates for specific therapies. Keywords: Disease state analysis
2008-10-30 | GSE10282 | GEO
Project description:Campylobacter jejuni causes food- and water-borne gastroenteritis, and as such must survive passage through the stomach in order to reach the gastrointestinal tract. While little is known about how C. jejuni survives transit through the stomach, its low infectious dose suggests it is well equipped to sense and respond to acid shock. In this study, the transcriptional profile of C. jejuni NCTC 11168 was obtained after exposure to in in vivo (piglet stomach) acid shock. Keywords: acid shock; in vivo study; transit through the host stomach
2008-01-21 | GSE9938 | GEO
Project description:Regulation of transit amplifying cell formation from self-renewing stem cell is fundamental process for cell replacement in a controlled way. Here we analyse the properties of a population of mesenchymal TACs in the continuously growing mouse incisor to identify key components of the molecular regulation that drives proliferation. We show that the polycomb repressive complex 1 acts as a global regulator of the TAC phenotype by its direct action on the expression of key cell cycle regulatory genes and also by regulating Wnt/b-catenin signalling activity. We also identify an essential requirement for TACs in maintaining the mesenchymal stem cells, indicative of a positive feedback mechanism. Analysing the properties of mesenchymal transit amplifying cells population and identifing key components of the molecular regulation that drives proliferation.
2019-03-12 | GSE104892 | GEO
Project description:Regulation of transit amplifying cell formation from self-renewing stem cell is fundamental process for cell replacement in a controlled way. Here we analyse the properties of a population of mesenchymal TACs in the continuously growing mouse incisor to identify key components of the molecular regulation that drives proliferation. We show that the polycomb repressive complex 1 acts as a global regulator of the TAC phenotype by its direct action on the expression of key cell cycle regulatory genes and also by regulating Wnt/b-catenin signalling activity. We also identify an essential requirement for TACs in maintaining the mesenchymal stem cells, indicative of a positive feedback mechanism. Analysing the properties of mesenchymal transit amplifying cells population and identifing key components of the molecular regulation that drives proliferation.
2019-03-12 | GSE104891 | GEO
Project description:Glaucophytes, rhodophyta and chloroplastida represent the three evolutionary lineages that diverged after primary endosymbiosis. Comparative analyses between members of these three lineages are a rich source of information on ancestral plastid features. We analyzed the composition and the cleavage site of cyanelle transit peptides from the glaucophyte Cyanophora paradoxa by terminal amine labelling of substrates (TAILS), and compared their characteristics to those of representatives of the chloroplastida. Our data show that transit peptide architecture is similar between members of these two lineages. This entails a comparable modular structure, an overrepresentation of serine or alanine and similarities in the amino acid composition around the processing peptidase cleavage site. The most distinctive difference is the overrepresentation of phenylalanine in the N-terminal 1-10 amino acids of cyanelle transit peptides. A quantitative proteome analysis with periplasm-free cyanelles identified 42 out of 262 proteins without the N-terminal phenylalanine, suggesting that the requirement for phenylalanine in this position is not absolute. Proteins in this set are on average of low abundance, suggesting that either alternative import pathways are operating specifically for low abundance proteins or that the gene model annotation is incorrect for proteins with fewer EST sequences. We discuss these two possibilities and provide examples for both interpretations.
2016-12-14 | PXD002187 | Pride
Project description:Regulation of transit amplifying cell formation from self-renewing stem cell is fundamental process for cell replacement in a controlled way. Here we analyse the properties of a population of mesenchymal TACs in the continuously growing mouse incisor to identify key components of the molecular regulation that drives proliferation. Using gene microarray profiling, we show that the polycomb repressive complex 1 acts as a global regulator of the TAC phenotype by its direct action on the expression of key cell cycle regulatory genes and also by regulating Wnt/b-catenin signalling activity. Analysing the properties of mesenchymal transit amplifying cells population and identifing key components of the molecular regulation that drives proliferation.
2019-03-12 | GSE104934 | GEO