title: An analysis of the interaction of a platinum complex and radiation with CHO cells using the molecular theory of cell survival.
abstract: A mathematical analysis is developed from the concepts of the molecular theory of cell survival to explain the cytotoxic action of a platinum complex on CHO cells and its synergistic interaction with radiation. In the analysis, it is assumed that both inter- and intra-strand cross-links induced by the Pt complex in the DNA contribute to cell killing and that the synergistic effect arises from the interaction between an intra-strand cross-link and a radiation-induced single-strand break on complementary strands of the DNA. The analysis is shown to be compatible with experimental results. Further, a mechanistic model is developed in an attempt to explain in more detail the processes which appear to be involved in the expression of the cytological damage.
mesh_terms: D000970:Antineoplastic Agents / Q000494:pharmacology*; D002460:Cell Line; D002470:Cell Survival / Q000187:drug effects / Q000528:radiation effects; D002869:Chromosome Aberrations; D003037:Cobalt Radioisotopes; D004305:Dose-Response Relationship, Drug; D004307:Dose-Response Relationship, Radiation; D005720:Gamma Rays; D008433:Mathematics; D008938:Mitosis; D008954:Models, Biological; D010984:Platinum / Q000494:pharmacology*; D011830:Radiation Effects
chemical_list: D000970:Antineoplastic Agents; D003037:Cobalt Radioisotopes; D010984:Platinum