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  • Title: Transcriptome analysis of different multidrug-resistant gastric carcinoma cells.
    Author: Heim S, Lage H.
    Journal: In Vivo; 2005; 19(3):583-90. PubMed ID: 15875780.
    Abstract:
    Multidrug resistance (MDR) of human cancers is the major cause of failure of chemotherapy. To better understand the molecular events associated with the development of different types of MDR, two different multidrug-resistant gastric carcinoma cell lines, the MDR1/P-glycoprotein-expressing cell line EPG85-257RDB and the MDR1/P-glycoprotein-negative cell variant EPG85-257RNOV, as well as the corresponding drug-sensitive parental cell line EPG85-257P, were used for analyses of the mRNA expression profiles by cDNA array hybridization. Of more than 12,000 genes spotted on the arrays, 156 genes were detected as being significantly regulated in the cell line EPG85-257RDB in comparison to the non-resistant cell variant, and 61 genes were found to be differentially expressed in the cell line EPG85-257RNOV Seventeen genes showed a differential expression level in both multidrug-resistant gastric carcinoma variants. The impact of these alterations in gene expression levels in different multidrug-resistant gastric carcinoma cell variants is discussed.
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