PURGING OF HUMAN LEUKEMIC CELL LINES IN VITRO WITH PHOTOCARCINORIN-MEDIATED PHOTOSENSITIZATION / 解放军医学杂志

5.16 log of K562, U937, HIMeg and HL60 cells, respectively, but spare 23.37 ? 25.66% of normal CFU-GM (0.63 log killing). When HL60 cells mixed with normal mononucleated bone marrow cells in 1:9 ratio were studied, the killing of HL60 colonies was more than 4.29 log. The result suggested that photocarcinorin plus light could eliminate leukemic progenitors, and might be used in clinical ABMT. Several factors that might affect the photosensitization effect on cells were discussed.