作者: Matthias H. Kraus , Yoshitaka Ebi , Hitoshi Onoue , Yukihiko Kitamura , Shiv K. Srivastava
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摘要: Two H- ras oncogenes were detected by NIH/3T3 transfection assay out of 16 primary kidney tumors, 15 renal cell carcinomas (RCC), and one transitional carcinoma in patients. Analysis M r 21,000 protein suggested single point mutations within codon 12 61 each case. The restriction endonuclease analysis gene at confirmed this them, the remaining tumors did not have a mutation site. DNAs from noncancerous portions with mutated tumor, but leukocytes same patient, showed an abnormal resistance to endonucleases Msp I Hpa II, suggesting presence cells. No amplification genes was analyzed. In eight patients heterozygous for related Bam HI fragments, allele lost tumor portion kidney. Although cytogenetic studies previously nonrandom involvement c- raf -1 RCC, no abnormality size nor amount transcript RCCs. Our results thus indicated that genetic lesions affecting do occur human probably serve as multisteps carcinogenic process.