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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)
Cloning, characterization, and chromosomal localization of a gene frequently deleted in human liver cancer (DLC-1) homologous to rat RhoGAP.
The isolation of genes involved in cancer development is critical for uncovering the molecular basis of cancer. We report here the isolation of the full-length cDNA and chromosomal localization of a new gene frequently deleted in liver cancer (DLC-1) that was identified by representational difference analysis. Loss of heterozygosity was detected for DLC-1 in 7 of 16 primary hepatocellular carcinomas (HCCs) and in 10 of 11 HCC cell lines. Although mRNA for DLC-1 was expressed in all normal human tissues, it was not expressed in 4 of 14 HCC cell lines. Full-length cDNA for DLC-1 of 3800 bp encodes a protein of 1091 amino acids, has 86% homology with rat p122 RhoGAP gene, and was localized by fluorescencein situ hybridization on chromosome 8 at bands p21.3-22. Deletions on the short arm of chromosome 8 are recurrent in liver, breast, lung, and prostate cancers, suggesting the presence of tumor suppressor genes. DLC-1 may be a tumor suppressor gene in liver cancer as well as in other cancers.[1]
