rhIL-11联合rhG-CSF和CTX动员小鼠外周造血干/祖细胞的实验研究

为研究rhIL 11联合rhG CSF和CTX对C5 7BL/ 6小鼠外周造血干细胞的动员作用 ,将 48只C5 7BL/ 6小鼠随机分为 4组 ,3组d0给予一次腹腔注射 2 0 0mg/kg的CTX ,其中 2组d1d15分别皮下注射rhIL 11、rhIL 11加rhG CSF ,观察不同时间外周血白细胞、血小板计数、CD34 细胞比例、CFU GM、CFU MK及CFU E的数量变化。结果发现 ,rhIL 11或联合rhG CSF可明显促进CTX骨髓抑制小鼠外周血血小板和白细胞的恢复、提高外周血CD34 细胞比例及三系造血细胞集落数量。证明rhIL 11具有外周血造血干细胞动员作用 ,而与rhG CSF和CTX联合动员效果更佳。

EXPERIMENTAL STUDY ON MOBILIZATION OF PERIPHERAL HEMATOPOIETIC STEM/PROGENITOR CELLS IN MICE BY A COMBINATION OF CYCLOPHOSPHAMIDE, RECOMBINANT HUMAN INTERLEUKIN-11 AND GRANULOCYTE-COLONY STIMULATING FACTOR

To explore the effect of recombinant human interleukin 11(rhIL-11), granulocyte-colony stimulating factor (rhG-CSF) combined with cyclophosphamide (CTX) on mobilizing peripheral blood stem/progenitor cells in C57BL/6 mice. A total of 48 C57BL/6 mice were randomized into four groups. CTX (200mg/kg) was injected intraperitonealy on the first day (d0) in the treatment group. rhIL-11 alone or in combination with rhG-CSF was administered subcutaneously, beginning from 24 hours after CTX for 15 consecutive days in two other groups. The changes in peripheral blood white cell counts, platelet counts and the percentage of hematopoietic stem/progenitor cells of the mice were observed. It was shown that rhIL-11 or/and rhG-CSF could increase the numbers of WBC, PLT, CFU-GM, CFU-E, CFU-MK progenitor cells, and the percentage of CD34 positive cells in peripheral blood of myelosupressed mice. The results demonstrated that rhIL-11 alone or in combination with G-CSF and CTX could mobilize bone marrow haematopoietic stem/progenitor cells into peripheral blood.