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Oncogene. 2002 Aug 22;21(37):5814-21.

Differentially expressed genes associated with mouse lung tumor progression.

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Division of Human Cancer Genetics, The Ohio State University Comprehensive Cancer Center, 420 West 12th Avenue, Columbus, Ohio, OH 43210, USA.


To detect altered gene expression associated with mouse lung tumor progression, we compared the gene expression profile of lung adenocarcinomas with that of lung adenomas and normal lungs. Autoradiographic analysis showed that among the 588 genes surveyed, 152 genes were detected and the remaining 436 genes did not give any signals. A gene-specific semiquantitative reverse transcription polymerase chain reaction method was used to confirm the expression profile. A total of 29 genes was found to be differentially expressed in mouse lung tumors when compared to normal lungs. The pattern of expression, either underexpression or overexpression, was the same for 10 genes between adenocarcinomas and adenomas. Among them, seven genes were overexpressed, two genes were underexpressed and one gene was lost. Interestingly, 19 genes showed differential expression or increased incidence or difference in level of change between lung adenomas and adenocarcinomas, including Stat1, ADAP, IGFBP-6, PDGF-A, TGF-beta2, Int-3, VEGFR2, BAX, BAG-1, c-Jun, FasL, TRAIL, YB-1, CD31, Cdc42, B-raf, Rab-2, Abi-1, and ACE. These genes can be designated as candidate 'lung tumor progression' (LTP) genes because their expression changes may specifically affect lung tumor progression in mice. Further analyses of these candidate LTP genes may provide new leads for elucidation of lung tumor progression in mice.

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