Abstract:
:The purpose of this study was to define gene expression profile changes in colorectal tumors in order to identify target genes involved in neoplastic progression. cDNA microarray analysis was used to detect differences in gene expression profiles between colon tumor samples obtained from 20 patients in different tumor stages. Genes included in the cDNA microarray were selected according to their role in the cell cycle, apoptosis process, drug resistance and transcription factor regulation. Cluster analysis showed 2 well differentiated gene expression profiles between colorectal tumors with or without lymph node involvement. Some of these genes are important regulators of apoptotic pathways (DAD1, APO3, DRAK1 or BIK), suggesting that this process could be associated with node involvement. Subsequent analysis of certain genes identified in the microarray analysis were confirmed by quantitative real-time PCR. Our data suggest that microarray technology could discriminate between the involvement of regional lymph node in colon cancer where apoptosis-related genes would be implied. This preliminary analysis also suggests that the gene expression profile may be useful in improving risk-group stratification.
journal_name
Oncol Repjournal_title
Oncology reportsauthors
Bandres E,Catalan V,Sola I,Honorato B,Cubedo E,Cordeu L,Andion E,Escalada A,Zarate R,Salgado E,Zabalegui N,García F,Garcia-Foncillas Jkeywords:
subject
Has Abstractpub_date
2004-08-01 00:00:00pages
287-92issue
2eissn
1021-335Xissn
1791-2431journal_volume
12pub_type
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