Neoplastic transformation of human hybrid cells by gamma radiation: a quantitative assay

Radiat Res. 1987 Jun;110(3):468-72.


Human skin fibroblasts are extremely refractory to neoplastic transformation by ionizing radiation [C. Borek, Nature 283, 776-778 (1980); M. Namba, H. Nishitani, and T. Kimoto, J. Exp. Med. 48, 303-311 (1978)] and are therefore unsuitable for quantitative studies of dose-effect relationships. We show here that a nontumorigenic human hybrid cell line (HeLa X skin fibroblast) can be neoplastically transformed by treatment with gamma radiation. Furthermore, a dose-response relationship has been established. We propose that this human hybrid cell line may be a useful system for mechanistic studies of transformation from the preneoplastic to the neoplastic state by ionizing radiation and other agents.

Publication types

  • Research Support, Non-U.S. Gov't
  • Research Support, U.S. Gov't, P.H.S.

MeSH terms

  • Cell Line
  • Cell Transformation, Neoplastic / radiation effects*
  • Cesium Radioisotopes
  • Gamma Rays
  • Humans
  • Hybrid Cells


  • Cesium Radioisotopes