Abstract: |
Studies were carried out on the effect of dianhydrogalactitol on a human neuroblastoma cell line in culture. The drug was cytotoxic at concentrations of 5 μg/ml and 10 μml for 1 hour, but not at 1 μml. Flow cytometry of DNA showed that cell kill was preceded by a transient accumulation of cells in early S at 10 hours, and in late S at 36 hours. Smaller increases in the percent of cells in S phase were seen after treatment with 1 μg/ml, without cell kill. It may be concluded that dianhydrogalactitol causes an S-phase block, followed by death of cells in late S at concentrations above 5 μg/ml. Assistant Attending Physician, Solid Tumor Service, Department of Medicine; Research Associate, Laboratory of Biophysics, Recipient, American Cancer Society Junior Faculty Clinical Award. © 1985 Informa UK Ltd All rights reserved: reproduction in whole or part not permitted. |