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Int J Cancer. 2000 Dec 1;88(5):726-32.

Novel association of a diverse range of genes with renal cell carcinoma as identified by differential display.

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1
Centre for Molecular Biotechnology, School of Life Sciences, Queensland University of Technology, Brisbane, Australia.

Abstract

We have used differential-display PCR (DD-PCR) to compare renal-cell carcinoma (RCC) and normal kidney gene expression with the aim of identifying genes specifically associated with RCC. Using a modified DD-PCR approach, which was non-radioactive, quicker and simpler than the conventional method, 24 cDNA samples were clearly up- or down-regulated in RCC tissue from 4 patients. Fourteen of these showed high similarity to a number of known genes. Eight of these cDNA clones were chosen for further analysis. These were a regulator of G-protein signalling (RGS-5), Notch-3, Na,K-ATPase alpha subunit, HLA class II antigen, ETS-like protein, transforming growth factor beta-stimulated clone (TSC-22), bladder cancer-related protein (BC10) and adipophilin. Semi-quantitative RT-PCR using specific primers to each of these genes confirmed differential expression in 67% to 83% of a further 12 RCC and normal kidney paired samples from 7 of the 8 cDNA clones. Northern analysis further confirmed the up-regulation in expression of RGS-5 and Notch-3 in RCC. Further characterisation of these differentially expressed genes should lead to a better understanding of the changes that occur at the molecular level during RCC development and progression.

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