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. 1989 Jan;86(1):162–166. doi: 10.1073/pnas.86.1.162

Detection of genes with a potential for suppressing the transformed phenotype associated with activated ras genes.

M Noda 1, H Kitayama 1, T Matsuzaki 1, Y Sugimoto 1, H Okayama 1, R H Bassin 1, Y Ikawa 1
PMCID: PMC286424  PMID: 2463620

Abstract

Seven morphologically nontransformed (flat) revertants with reduced tumorigenicity in vivo have been isolated from populations of Kirsten sarcoma virus-transformed NIH 3T3 cells transfected with a cDNA expression library of normal human fibroblasts. Each revertant harbors 1-10 recombinant plasmids per cell and retains a rescuable transforming virus as well as high level expression of v-Ki-ras-specific RNA and the viral oncogene product, p21v-Ki-ras. Transformed phenotypes are suppressed in cell hybrids generated by fusing each revertant to v-Ki-ras-transformed NIH 3T3 cells. From two of the revertant lines, plasmids capable of giving rise to flat secondary transfectants have been recovered. Thus, in some, if not all, of the revertants, transfected cDNAs seem to be responsible for the suppression of specific transformed phenotypes.

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Selected References

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