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  • Title: Effects of GM-CSF on Ki67 expression and cell cycle traverse in acute myelogenous leukemia specimens and cell lines.
    Author: Liesveld JL, Keng PC, Rowe JM, DiPersio JF, Abboud CN.
    Journal: Leuk Res; 1994 Aug; 18(8):609-16. PubMed ID: 8065162.
    Abstract:
    A new strategy in the treatment of acute myelogenous leukemia is to attempt to increase the growth fraction of clonal leukemic cells prior to administration of chemotherapeutic agents by the administration of hematopoietic growth factors. We have studied the effect of GM-CSF on the cell cycle status and Ki67 nuclear antigen expression of AML blasts in vitro. The effect of growth factors and stromal cell co-culture on Ki67 expression in leukemic cell lines was also examined. Neither stromal cell co-culture nor exposure of factor-dependent and factor-independent cell lines to GM-CSF, IL-3, SCF, or combinations thereof significantly changed the percentage of cells expressing Ki67. In the AML population analyzed as a whole, exposure of blasts to GM-CSF for up to 96 h did not significantly change the percentage of cells in S phase or expressing Ki67.
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