Abstract
We have constructed a dl884/tsA58 double mutant and a t+T- early-region deletion mutant and have used these mutants to study the roles of the simian virus 40 tumor antigens (T and t) in transformation. Our major conclusions are that (i) although the mutant tsA58 is not temperature sensitive for the maintenance of transformation, the dl884/tsA58 double mutant is; (ii) small t antigen can provide at least one, but not all, of the functions required for the maintenance of transformation; and (iii) at least two different functions are required for the maintenance of simian virus 40 transformation.
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- Collett M. S., Erikson R. L. Protein kinase activity associated with the avian sarcoma virus src gene product. Proc Natl Acad Sci U S A. 1978 Apr;75(4):2021–2024. doi: 10.1073/pnas.75.4.2021. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Fluck M. M., Benjamin T. L. Comparisons of two early gene functions essential for transformation in polyoma virus and SV-40. Virology. 1979 Jul 15;96(1):205–228. doi: 10.1016/0042-6822(79)90185-5. [DOI] [PubMed] [Google Scholar]
- Graham F. L., van der Eb A. J. A new technique for the assay of infectivity of human adenovirus 5 DNA. Virology. 1973 Apr;52(2):456–467. doi: 10.1016/0042-6822(73)90341-3. [DOI] [PubMed] [Google Scholar]
- Kimura G., Dulbecco R. A temperature-sensitive mutant of simian virus 40 affecting transforming ability. Virology. 1973 Apr;52(2):529–534. doi: 10.1016/0042-6822(73)90348-6. [DOI] [PubMed] [Google Scholar]
- Martin R. G., Setlow V. P., Edwards C. A. Roles of the simian virus 40 tumor antigens in transformation of Chinese hamster lung cells: studies with simian virus 40 double mutants. J Virol. 1979 Sep;31(3):596–607. doi: 10.1128/jvi.31.3.596-607.1979. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Martin R. G., Setlow V. P., Edwards C. A., Vembu D. The roles of the simian virus 40 tumor antigens in transformation of Chinese hamster lung cells. Cell. 1979 Jul;17(3):635–643. doi: 10.1016/0092-8674(79)90271-x. [DOI] [PubMed] [Google Scholar]
- McCutchan J. H., Pagano J. S. Enchancement of the infectivity of simian virus 40 deoxyribonucleic acid with diethylaminoethyl-dextran. J Natl Cancer Inst. 1968 Aug;41(2):351–357. [PubMed] [Google Scholar]
- Reznikoff C. A., Brankow D. W., Heidelberger C. Establishment and characterization of a cloned line of C3H mouse embryo cells sensitive to postconfluence inhibition of division. Cancer Res. 1973 Dec;33(12):3231–3238. [PubMed] [Google Scholar]
- Rubin H., Figge J., Bladon M. T., Chen L. B., Ellman M., Bikel I., Farrell M., Livingston D. M. Role of small t antigen in the acute transforming activity of SV40. Cell. 1982 Sep;30(2):469–480. doi: 10.1016/0092-8674(82)90244-6. [DOI] [PubMed] [Google Scholar]
- Seif R., Martin R. G. Growth state of the cell early after infection with simian virus 40 determines whether the maintenance of transformation will be A-gene dependent or independent. J Virol. 1979 Aug;31(2):350–359. doi: 10.1128/jvi.31.2.350-359.1979. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Seif R., Martin R. G. Simian virus 40 small t antigen is not required for the maintenance of transformation but may act as a promoter (cocarcinogen) during establishment of transformation in resting rat cells. J Virol. 1979 Dec;32(3):979–988. doi: 10.1128/jvi.32.3.979-988.1979. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Shenk T. E., Carbon J., Berg P. Construction and analysis of viable deletion mutants of simian virus 40. J Virol. 1976 May;18(2):664–671. doi: 10.1128/jvi.18.2.664-671.1976. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Sompayrac L. M., Danna K. J. Efficient infection of monkey cells with DNA of simian virus 40. Proc Natl Acad Sci U S A. 1981 Dec;78(12):7575–7578. doi: 10.1073/pnas.78.12.7575. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Sompayrac L. M., Danna K. J. Isolation and characterization of simian virus 40 early region deletion mutants. J Virol. 1982 Jul;43(1):328–331. doi: 10.1128/jvi.43.1.328-331.1982. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Stoker M. Abortive transformation by polyoma virus. Nature. 1968 Apr 20;218(5138):234–238. doi: 10.1038/218234a0. [DOI] [PubMed] [Google Scholar]
- Stoker M., Dulbecco R. Abortive transformation by the Tsa mutant of polyoma virus. Nature. 1969 Jul 26;223(5204):397–398. doi: 10.1038/223397a0. [DOI] [PubMed] [Google Scholar]
- Tegtmeyer P. Function of simian virus 40 gene A in transforming infection. J Virol. 1975 Mar;15(3):613–618. doi: 10.1128/jvi.15.3.613-618.1975. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Wigler M., Pellicer A., Silverstein S., Axel R., Urlaub G., Chasin L. DNA-mediated transfer of the adenine phosphoribosyltransferase locus into mammalian cells. Proc Natl Acad Sci U S A. 1979 Mar;76(3):1373–1376. doi: 10.1073/pnas.76.3.1373. [DOI] [PMC free article] [PubMed] [Google Scholar]

