Cancer Research and Treatment

Original Article

Isolation of Differentially-Displayed cDNAs from a Doxrubicin Resistant Gastric Carcinoma Cell Line: Myung Soo Kang, Jae Ho Lee, Jae Gahb Park; J Korean Cancer Assoc. 1998;30(4):625-631.

Abstract PDF: PURPOSE
This study was aimed to isolate cDNAs putatively associated with doxorubicin resistance or sensitivity in gastric carcinoma cell line.
MATERIALS AND METHODS
A doxorubicin-sensitive parental SNU-16 and doxorubicin resistant SNU-16DOX cell line were used. Differential display-PCR(DD-PCR) was employed to screen for differentially expressed cDNA fragment either in parental or resistant cell line and followed by subtractive hybridization to discriminate true positive from false positive clones. The sequences were determined and compared to the sequence data base registered at the GenBank.
RESULTS
Four clones(16, 19, 21, and 22 clone) were isolated, of which three(16, 19 and 21 clone) was downexpressed, and one(22 clone) was overexpressed in doxorubicin resistant cell line. All four clones were found to be novel sequences. Further analysis for these clones are under characterization.
CONCLUSION
Four partial cDNA clones that are putatively associated with doxorubicin resistance or sensitivity in gastric carcinoma cell line were isolated.

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