Skip to main content
Proceedings of the National Academy of Sciences of the United States of America logoLink to Proceedings of the National Academy of Sciences of the United States of America
. 1970 Dec;67(4):1775–1781. doi: 10.1073/pnas.67.4.1775

Temperature-Dependent Properties of Cells Transformed by a Thermosensitive Mutant of Polyoma Virus*

Renato Dulbecco 1, Walter Eckhart 1,
PMCID: PMC283426  PMID: 4321345

Abstract

In cells transformed by ts-3, a thermosensitive mutant of polyoma virus, the loss of inhibition of DNA synthesis by topographical factors (topo-inhibition), is rendered temperature-dependent, providing evidence that the viral genome controls this essential aspect of transformation. The expression of two other attributes of transformed cells, growth in agar and serum requirement for initiation of DNA synthesis in a wound in culture, is not made temperature-dependent. In productive infection of BALB-3T3 cells by ts-3, virus-induced stimulation of cellular DNA synthesis and movement is rendered temperature-dependent.

Full text

PDF
1775

Selected References

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

  1. Dulbecco R. Behavior of tissue culture cells infected with polyoma virus. Proc Natl Acad Sci U S A. 1970 Nov;67(3):1214–1220. doi: 10.1073/pnas.67.3.1214. [DOI] [PMC free article] [PubMed] [Google Scholar]
  2. Dulbecco R. Topoinhibition and serum requirement of transformed and untransformed cells. Nature. 1970 Aug 22;227(5260):802–806. doi: 10.1038/227802a0. [DOI] [PubMed] [Google Scholar]
  3. 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]
  4. Hirt B. Selective extraction of polyoma DNA from infected mouse cell cultures. J Mol Biol. 1967 Jun 14;26(2):365–369. doi: 10.1016/0022-2836(67)90307-5. [DOI] [PubMed] [Google Scholar]
  5. Pollack R. E., Green H., Todaro G. J. Growth control in cultured cells: selection of sublines with increased sensitivity to contact inhibition and decreased tumor-producing ability. Proc Natl Acad Sci U S A. 1968 May;60(1):126–133. doi: 10.1073/pnas.60.1.126. [DOI] [PMC free article] [PubMed] [Google Scholar]
  6. Sambrook J., Westphal H., Srinivasan P. R., Dulbecco R. The integrated state of viral DNA in SV40-transformed cells. Proc Natl Acad Sci U S A. 1968 Aug;60(4):1288–1295. doi: 10.1073/pnas.60.4.1288. [DOI] [PMC free article] [PubMed] [Google Scholar]

Articles from Proceedings of the National Academy of Sciences of the United States of America are provided here courtesy of National Academy of Sciences

RESOURCES