Comparison of Cytogenetics, Cytokine Secretion, and Oncogene Expression in Primary Cultures of Renal Carcinoma Cells

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Abstract
We compared the cytogenetic pattern of 20 different primary tumor cell cultures (PTCC) of renal cell carcinoma (RCC) to their cytokine secretion and oncogene expression. High secretion of IL-6 (gene locus on chromosome 7p21-pl4) was correlated with the gain of an additional chromosome 7. Structural changes involving chromosome 5q22, the site of the GM-CSF gene, were matched with the high secretion of GM-CSF in PTCC. No such association was found for pymicroglobulin, TGF-(3i, TNF-a, IL-8, and oncogenes, such as c-fos, c-myc, and pan-ras. Our approach may be useful in simultaneously analyzing several factors contributing to tumor progression and may contribute to understanding the multistep development of RCC.

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