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. 1990 Mar;64(3):1304–1313. doi: 10.1128/jvi.64.3.1304-1313.1990

Low probability of double integration in transformation of nonpermissive cells by polyomavirus.

S Y Oh 1, A Amalfitano 1, K Friderici 1, M C Chen 1, M M Fluck 1
PMCID: PMC249248  PMID: 2154610

Abstract

The fate of polyomavirus genomes in stable transformants was examined in experiments in which rat or hamster cells were infected with mixed viral populations containing either two distinguishable wild types or a wild type plus a transformation-deficient mutant. The results demonstrate that in 90% of the cases in either situation, a single polyomavirus parental genome became integrated into the host genome. Both parents in the mixed infection were present in the same cells and both persisted in the infected cells until transformants appeared, eliminating the possibility that one virus would exclude the other in the early steps of the infection process. We believe that these results can be generalized to transformation events derived from normal single infections. Thus, contrary to previous results for the number of integration sites determined by restriction endonuclease and blot hybridization analysis, it appears that the probability for more than one integration event in transformation by polyomavirus is low (1 in 10). A reinterpretation of previous data is proposed.

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These references are in PubMed. This may not be the complete list of references from this article.

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