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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)

A herpes simplex virus 1 integration site in the mouse genome defined by somatic cell genetic analysis.

Transfection experiments with HSV 1 in which one uses herpes simplex virus (HSV) thymidine kinase ( TK) as a selectable prototrophic marker yield two classes of transformed cells: stable and unstable. In this report, we test the hypothesis that the stability phenotype can be explained by virus genome integration into a recipient cell chromosome. The method of analysis is by means of somatic cell genetics. We have isolated a series of microcell hybrids between a TK- Chinese hamster cell line and a transformed mouse cell line expressing the TK encoded by HSV 1. Several of the hybrid lines contain a single murine chromosome and express only the viral TK. Karyotypic analysis of these hybrids and of TK- derivatives generated by BrdUrd counterselection reveals that the TK+ phenotype is correlated with the presence of the terminal portion of the long arm of a specific murine chromosome. Results of extensive isozyme analyses of the hybrids and their TK- segregants fully corroborate the karyologic data. The results are consistent with the hypothesis that the viral tk gene is covalently integrated into this chromosomal region which itself does not appear to carry the endogenous murine tk locus. Other more complicated models are discussed. Our findings also show that somatic cell genetics can be used to localize viral integration sites in host chromosomes with high resolution.[1]


  1. A herpes simplex virus 1 integration site in the mouse genome defined by somatic cell genetic analysis. Smiley, J.R., Steege, D.A., Juricek, D.K., Summers, W.P., Ruddle, F.H. Cell (1978) [Pubmed]
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