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Ribosomal Protein Genes Are Overexpressed in Colorectal Cancer: Isolation of a CDNA Clone Encoding the Human S3 Ribosomal Protein

Overview
Journal Mol Cell Biol
Specialty Cell Biology
Date 1991 Aug 1
PMID 1712897
Citations 67
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Abstract

We have isolated a cDNA clone encoding the human S3 ribosomal protein from a normal human colon cDNA library. The clone was identified as one of many that detected genes whose level of expression was increased in adenocarcinoma of the colon relative to normal colonic mucosa. Increased levels of the S3 transcript were present in the tumors of all eight patients examined. Moreover, the S3 mRNA was also more abundant in 7 of 10 adenomatous polyps, the presumed precursor of carcinoma. Additional studies demonstrated that increased levels of mRNAs encoding several other ribosomal proteins, including S6, S8, S12, L5, and P0, were present in colorectal tumors and polyps. These results suggest that there is increased synthesis of ribosomes in colorectal tumors and that this increase is an early event in colon neoplasia.

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