The presence of carcinoma in situ (CIS) lesions in the urinary bladder is associated with a high risk of disease progression to a muscle invasive stage. In this study, we used microarray expression profiling to examine the gene expression patterns in superficial transitional cell carcinoma (sTCC) with surrounding CIS (13 patients), without surrounding CIS lesions (15 patients), and in muscle invasive carcinomas (mTCC; 13 patients). Hierarchical cluster analysis separated the sTCC samples according to the presence or absence of CIS in the surrounding urothelium. We identified a few gene clusters that contained genes with similar expression levels in transitional cell carcinoma (TCC) with surrounding CIS and invasive TCC. However, no close relationship between TCC with adjacent CIS and invasive TCC was observed using hierarchical cluster analysis. Expression profiling of a series of biopsies from normal urothelium and urothelium with CIS lesions from the same urinary bladder revealed that the gene expression found in sTCC with surrounding CIS is found also in CIS biopsies as well as in histologically normal samples adjacent to the CIS lesions. Furthermore, we also identified similar gene expression changes in mTCC samples. We used a supervised learning approach to build a 16-gene molecular CIS classifier. The classifier was able to classify sTCC samples according to the presence or absence of surrounding CIS with a high accuracy. This study demonstrates that a CIS gene expression signature is present not only in CIS biopsies but also in sTCC, mTCC, and, remarkably, in histologically normal urothelium from bladders with CIS. Identification of this expression signature could provide guidance for the selection of therapy and follow-up regimen in patients with early stage bladder cancer.
Gene expression in the urinary bladder: a common carcinoma in situ gene expression signature exists disregarding histopathological classification.
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View SamplesThis study determines pineal gland gene expression levels in the NeuroD1 knockout mouse at postnatal day zero.
NeuroD1: developmental expression and regulated genes in the rodent pineal gland.
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View SamplesThis SuperSeries is composed of the SubSeries listed below.
Identifying and avoiding off-target effects of RNase H-dependent antisense oligonucleotides in mice.
Sex, Specimen part, Treatment
View SamplesWe used microarrays to globally profile the gene expression changes observed in liver after 3 days when dosing antisense oligonucleotides in mice
Identifying and avoiding off-target effects of RNase H-dependent antisense oligonucleotides in mice.
Sex, Specimen part, Treatment
View SamplesWe used microarrays to globally profile the gene expression changes observed in liver after 3 days when dosing an antisense oligonucleotide in mice
Identifying and avoiding off-target effects of RNase H-dependent antisense oligonucleotides in mice.
Sex, Specimen part, Treatment
View SamplesResveratrol treatment has shown beneficial effects on experimental models of non-alcoholic liver disease (NAFLD). In this pilot-size, clinical trial we teated the therapeutic potential in NAFLD patients.
Placebo-controlled, randomised clinical trial: high-dose resveratrol treatment for non-alcoholic fatty liver disease.
Sex, Specimen part, Disease
View SamplesWe studied 498 de-novo adult DLBCL cases, which had been diagnosed between January 2002 and October 2009, as part of the International DLBCL Rituximab-CHOP Consortium Program Study
Addition of rituximab to chemotherapy overcomes the negative prognostic impact of cyclin E expression in diffuse large B-cell lymphoma.
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View SamplesThe rat pineal transcriptome was sequenced using mid-day and mid-night samples to describe the pineal transcriptome and to identify transcripts that exhibit day/night differences in expression.
Circadian changes in long noncoding RNAs in the pineal gland.
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View SamplesThis SuperSeries is composed of the SubSeries listed below.
Night/day changes in pineal expression of >600 genes: central role of adrenergic/cAMP signaling.
Specimen part, Time
View SamplesBiological processes are optimized by circadian and circannual biological timing systems. In vertebrates, the pineal gland plays an essential role in these systems by converting time into a hormonal signal, melatonin; in all vertebrates, circulating melatonin is elevated at night, independent of lifestyle. At night, sympathetic input to the pineal gland, originating from the circadian clock in the suprachiasmatic nucleus, releases norepinephrine. This adrenergic stimulation causes an elevation of cAMP, which is thought to regulate many of the dramatic changes in genes expression known to occur at night. In many aspects, the adrenergic/cAMP effects on gene expression can be recapitulated in primary organ culture.
Night/day changes in pineal expression of >600 genes: central role of adrenergic/cAMP signaling.
Specimen part, Time
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