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Expression data from 20 human colon cancer

ABSTRACT: We obtained snap-frozen tissue samples from 20 colorectal cancer (CRC) patients with stage III disease who had undergone curative resection. The expression profiles were determined using Affymetrix Human Genome U133Plus 2.0 arrays. We used microarrays to identify potential gene deregulation correlated with the outcomes of colon cancer patients. mRNA from 20 primary colorectal tumour samples were extracted and hybridized to HG-U133Plus 2.0 expression arrays. The NexusExp3 procedure was used to make calls of expression. Of the 20 patients, 7 had disease relapse within 3 years after surgery.

ORGANISM(S): Homo sapiens

SUBMITTER: Lekun Fang

PROVIDER: E-GEOD-60697 | biostudies-arrayexpress |

REPOSITORIES: biostudies-arrayexpress

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Expression data from 20 human colon cancer

Project description:We obtained snap-frozen tissue samples from 20 colorectal cancer (CRC) patients with stage III disease who had undergone curative resection. The expression profiles were determined using Affymetrix Human Genome U133Plus 2.0 arrays. We used microarrays to identify potential gene deregulation correlated with the outcomes of colon cancer patients.

2014-08-26 | GSE60697 | GEO

Transcription profiling of human primary colorectal cancers

Project description:Samples were taken from colorectal cancers in surgically resected specimens in 155 colorectal cancer patients. The expression profiles were determined using Affymetrix Human Genome U133Plus 2.0 arrays. Our MSI/MSS classifier was applied to these samples. Experiment Overall Design: mRNA from one-hundred-fifty-five primary colorectal tumour samples were extracted and hybridized to HG-U133Plus 2.0 expression arrays. The MAS5.0 procedure was used to make calls of expression. Data from each sample were quantile normalized and log-2 transformed.

2009-02-07 | E-GEOD-13294 | biostudies-arrayexpress

Transcription profiling of human primary colorectal cancers

Project description:Samples were taken from colorectal cancers in surgically resected specimens from 74 patients. The expression profiles were determined using Affymetrix Human Genome U133Plus 2.0 arrays. Our MSI/MSS classifer was applied to these samples. Experiment Overall Design: mRNA from 74 fresh-frozen primary colorectal tumour samples were extracted and hybridized to HG-U133Plus 2.0 expression arrays. The MAS5.0 procedure was used to make calls of expression. Data from each sample were quantile normalized with reference to a training set prior to application of our MSS/MSI classifier.

2009-01-16 | E-GEOD-13067 | biostudies-arrayexpress

Expression data from primary colorectal cancers

2009-01-22 | GSE13294 | GEO

Gene expression signature and the prediction of recurrence in stage III colorectal cancer by DNA microarray

Project description:Samples were taken from colorectal cancers in surgically resected specimens in 36 colorectal cancer patients. The expression profiles were determined using Affymetrix Human Genome U133 Plus 2.0 arrays. Comparison between the sample groups allow to identify a set of discriminating genes that can be used for molecular markers for predicting recurrence. Keywords: repeat Thirty-six colorectal cancer patients who had undergone surgical resection of colorectal cancer were studied. In all patients, curative resection was performed and no patients had any distant metastasis at the time of operation (stage III patients). Among the 36 patients, 23 patients did not develop recurrence. On the other hand, 13 patients developed rucurrence such as liver metastases, lung metastases and distant lymph node metastases. The median follow up period was 4.5 years.

2010-08-31 | E-GEOD-4526 | biostudies-arrayexpress

Expression data from primary colorectal cancers

2009-01-08 | GSE13067 | GEO

Expression data from 290 primary colorectal cancers

Project description:Samples were taken from colorectal cancers in surgically resected specimens in 290 colorectal cancer patients. The expression profiles were determined using Affymetrix Human Genome U133Plus 2.0 arrays. The training set of our prognosis classifier included the stage A and D samples. Validation used our stage B and C samples. Keywords: Expression profiling by array

2010-01-08 | GSE14333 | GEO

Fibrinogen chain positive circulating exosomes are a colorectal cancer potential biomarker

Project description:Exosomes are small vesicles contain cellular nucleic acids, proteins, lipids and other substances secreted by living cells. The special structure of exosomes makes it possible to protect the inside contents exist in blood stably. Recent researches showed that exosomes are blame for tumor metastatic dissemination, recurrence and malignance, which makes them strong competitors in diagnosis of cancer. The proteomics of exosomes in circulatory system as well as the phosphorylation state of them through different stages of colorectal cancer (CRC) process remain rarely reported. Here we isolate and identify proteins and phosphorylated protein in exosomes from human plasma in healthy donors and different stages of CRC patients by prolonged ultracentrifugation and liquid chromatography coupled to tandem mass spectrometry (LC-MS/MS) analysis. In this study, a total of 462 quantitative proteins were identified, meanwhile, the strategy allowed us to identify 177 quantifiable proteins along with 315 sites. Proteins with notable different levels are verified and fibrinogen chain positive (FGA+) circulating exosomes (crExos) from patients and from mice could identify CRC with excellent sensitivity and specificity while perform very well in early diagnosis of adenomas. According to our findings, FGA+ crExos could serve as a potential non-invasive diagnostic and screening tool to detect early stages of CRC to facilitate possible curative surgical therapy.

2020-05-26 | PXD009490 | Pride

Expression data for 59 primary tumors from patients with colorectal cancer

Project description:mRNA from 59 primary colorectal tumour samples were extracted and hybridized to HG-U133Plus 2.0 expression arrays. Mutation status for several genes were determined using Sanger sequencing.

2016-11-28 | GSE75316 | GEO

Prognostic Gene Expression Signature Associated with Two Molecularly Distinct Subtypes of Colorectal Cancer

Project description:The aim of this study is to identify prognostic gene expression signatures associated with two molecularly distinct subtypes of colorectal cancer. Samples were taken from colorectal cancers in surgically resected specimens in 96 colorectal cancer patients. The expression profiles were determined using Affymetrix Human Genome U133Plus 2.0 arrays. This is a test set for validation of prognostic gene expression signature that was developed from GSE14333. All data were normalized by using the RMA method (affy package in R/Bioconductor).

2011-06-20 | GSE29971 | GEO

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