Summary
We report here the spontaneous transformation of a normal diploid bovine fetal aortic endothelial cell line. This cell line showed a period of rapid proliferation, followed by a period of declining proliferative activity, as judged by both a decline in the number of population doublings achieved from seeding to subcultivation and a decrease in the fraction of cells incorporating [3H]thymidine. During the decline in proliferation, foci of small cells appeared amid a background of larger senescent-appearing cells. The cultures then regained proliferative activity and have been maintained in our laboratory for more than 22 months. The transformants are characterized by (a) an indefinite life span, (b) a morphology that is more spindle shaped as compared to pretransformants, and (c) heteroploidy with chromosome translocations.
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This work was supported by the U.S. National Institute of Health (NIH) Grant AG-00378. S. D. G. is a predoctoral trainee supported by U.S. Public Health Service Grant CA-09191-06, E. H. is supported under NIH Grant AG0-2100, and W. W. N. is the S. Emlen Stokes Professor of Genetics at the Institute for Medical Research.
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Gorman, S.D., Hoffman, E., Nichols, W.W. et al. Spontaneous transformation of a cloned cell line of normal diploid bovine vascular endothelial cells. In Vitro 20, 339–345 (1984). https://doi.org/10.1007/BF02618597
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DOI: https://doi.org/10.1007/BF02618597