Abstract
The purpose of this study was to determine the sensitivity to merocyanine 540 (MC 540)-mediated photolysis of normal human hematopoietic progenitor cells and four leukemia cell lines (Daudi, Raji, K562 and HL-60). Late erythroid progenitors were the most sensitive normal cells. Early erythroid progenitors were of intermediate sensitivity. Granulocyte/macrophage progenitors and multipotent progenitors were the least sensitive normal marrow cells. A combination of dye concentration, serum concentration, and illumination that eliminated 50% of multipotent progenitor cells reduced the concentration of leukemic cells by ≥4.5 log. It is conceivable that this difference in photosensitivity can be exploited for the extracorporeal purging of autologous remission marrow grafts.
Original language | English (US) |
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Pages (from-to) | 43-49 |
Number of pages | 7 |
Journal | Leukemia Research |
Volume | 11 |
Issue number | 1 |
DOIs | |
State | Published - 1987 |
Keywords
- Autologous marrow transplantation
- extracorporeal purging
- hematopoietic stem cells
- leukemia cells
- merocyanine 540
- photosensitization
ASJC Scopus subject areas
- Hematology
- Oncology
- Cancer Research