Skip to main content
PMC home page
Journal of Virology logoLink to Journal of Virology
. 1980 Feb;33(2):909–911. doi: 10.1128/jvi.33.2.909-911.1980

Transformation of rat fibroblast cells with early mutants of polyoma (tsa) and simian virus 40 (tsA30): occurrence of either A or N transformants depends on the multiplicity of infection.

M Rassoulzadegan, F Cuzin
PMCID: PMC288616  PMID: 6251255

Abstract

Infection of rat fibroblasts with early mutants of polyoma virus (tsa) or simian virus 40 (tsA30) leads to the establishment of either temperature-independent A transformants or N transformants temperature-sensitive for the expression of the transformed phenotype. The choice between the A- and N-transformed states is not only dependent, as we reported previously (Rassoulzadegan et al., j. Virol., 28:421-426, 1978), on the growth conditions after infection, but is also a function of the multiplicity of infection (MOI); high MOI led to the predominant occurrence of A derivatives, and lower MOI led to that of N transformants.

Full text

PDF

Selected References

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

  1. Brockman W. W. Transformation of BALB/c-3T3 cells by tsA mutants of simian virus 40: temperature sensitivity of the transformed phenotype and retransofrmation by wild-type virus. J Virol. 1978 Mar;25(3):860–870. doi: 10.1128/jvi.25.3.860-870.1978. [DOI] [PMC free article] [PubMed] [Google Scholar]
  2. Brugge J. S., Butel J. S. Role of simian virus 40 gene A function in maintenance of transformation. J Virol. 1975 Mar;15(3):619–635. doi: 10.1128/jvi.15.3.619-635.1975. [DOI] [PMC free article] [PubMed] [Google Scholar]
  3. Chou J. Y., Martin R. G. Complementation analysis of simian virus 40 mutants. J Virol. 1974 May;13(5):1101–1109. doi: 10.1128/jvi.13.5.1101-1109.1974. [DOI] [PMC free article] [PubMed] [Google Scholar]
  4. Di Mayorca G., Callender J., Marin G., Giordano R. Temperature-sensitive mutants of polyoma virus. Virology. 1969 May;38(1):126–133. doi: 10.1016/0042-6822(69)90134-2. [DOI] [PubMed] [Google Scholar]
  5. Eckhart W. Complementation and transformation by temperature-sensitive mutants of polyoma virus. Virology. 1969 May;38(1):120–125. doi: 10.1016/0042-6822(69)90133-0. [DOI] [PubMed] [Google Scholar]
  6. FRIED M. CELL-TRANSFORMING ABILITY OF A TEMPERATURE-SENSITIVE MUTANT OF POLYOMA VIRUS. Proc Natl Acad Sci U S A. 1965 Mar;53:486–491. doi: 10.1073/pnas.53.3.486. [DOI] [PMC free article] [PubMed] [Google Scholar]
  7. FRIED M. ISOLATION OF TEMPERATURE-SENSITIVE MUTANTS OF POLYOMA VIRUS. Virology. 1965 Apr;25:669–671. doi: 10.1016/0042-6822(65)90098-x. [DOI] [PubMed] [Google Scholar]
  8. Kelley S., Bender M. A., Brockman W. W. Transformation of BALB/c-3T3 cells by tsA mutants of simian virus 40: effect of transformation technique on the transformed phenotype. J Virol. 1980 Jan;33(1):550–552. doi: 10.1128/jvi.33.1.550-552.1980. [DOI] [PMC free article] [PubMed] [Google Scholar]
  9. Martin R. G., Chou J. Y. Simian virus 40 functions required for the establishment and maintenance of malignant transformation. J Virol. 1975 Mar;15(3):599–612. doi: 10.1128/jvi.15.3.599-612.1975. [DOI] [PMC free article] [PubMed] [Google Scholar]
  10. Osborn M., Weber K. Simian virus 40 gene A function and maintenance of transformation. J Virol. 1975 Mar;15(3):636–644. doi: 10.1128/jvi.15.3.636-644.1975. [DOI] [PMC free article] [PubMed] [Google Scholar]
  11. Rassoulzadegan M., Perbal B., Cuzin F. Growth control in simian virus 40-transformed rat cells: temperature-independent expression of the transformed phenotype in tsA transformants derived by agar selection. J Virol. 1978 Oct;28(1):1–5. doi: 10.1128/jvi.28.1.1-5.1978. [DOI] [PMC free article] [PubMed] [Google Scholar]
  12. Rassoulzadegan M., Seif R., Cuzin F. Conditions leading to the establishment of the N (a gene dependent) and A (a gene independent) transformed states after polyoma virus infection of rat fibroblasts. J Virol. 1978 Nov;28(2):421–426. doi: 10.1128/jvi.28.2.421-426.1978. [DOI] [PMC free article] [PubMed] [Google Scholar]
  13. Seif R., Cuzin F. Temperature-sensitive growth regulation in one type of transformed rat cells induced by the tsa mutant of polyoma virus. J Virol. 1977 Dec;24(3):721–728. doi: 10.1128/jvi.24.3.721-728.1977. [DOI] [PMC free article] [PubMed] [Google Scholar]
  14. 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]
  15. Tegtmeyer P., Ozer H. L. Temperature-sensitive mutants of simian virus 40: infection of permissive cells. J Virol. 1971 Oct;8(4):516–524. doi: 10.1128/jvi.8.4.516-524.1971. [DOI] [PMC free article] [PubMed] [Google Scholar]
  16. Tenen D. G., Martin R. G., Anderson J., Livingston D. M. Biological and biochemical studies of cells transformed by simian virus 40 temperature-sensitive gene A mutants and A mutant revertants. J Virol. 1977 Apr;22(1):210–218. doi: 10.1128/jvi.22.1.210-218.1977. [DOI] [PMC free article] [PubMed] [Google Scholar]

Articles from Journal of Virology are provided here courtesy of American Society for Microbiology (ASM)

RESOURCES