title: The Primary Study of CD90(+)CD34(-)and Sca-1(+) Stem Cells Mobilized by EPO Plus G-CSF in Mice.
abstract: To investigate effects of recombinant human erythropoietin (rhEPO) plus recombinant human granulocyte colony stimulating factor (rhG-CSF) on mobilization of CD90(+)CD34(-) and Sca-1(+) stem cells in mice. rhEPO 1000 IU·kg(-1)·d(-1) per mice alone or plus rhG-CSF 250 μg·kg(-1)·d-1(-1)per mice was administered to mice for five days, the peripheral blood was collected at 6 hours, 1, 3,5 and 7 days after the last administration. The number of white blood cells (WBC) and mononuclear cells (MNC) was counted. The level of CD34, CD90 and Sca-1 mRNA were detected by reverse transcription-polymerase chain reaction (RT-PCR).The expressions of CD90(+)CD34(-) in absolute nuclear cells of peripheral blood was detected by flow cytometry. The results indicate that compared to mobilizing by rhG-CSF, rhEPO or plus rhG-CSF did not significantly enhance the number of WBC and MNC, on the fifth and the seventh day after the last administration, both the expression of CD34,CD90 and Sca-1 mRNA and the proportion of CD90(+)CD34(-) cells dramatically raised in rhEPO or in addition to rhG-CSF groups. We conclude that rhEPO or plus rhG-CSF had a strong capacity of mobilization of stem cells. The alteration of expression of CD34, CD90 and Sca-1 mRNA after the administration of rhEPO or combined with rhG-CSF indicated that this agents might potentially alter the peripheral blood graft content.
authors.affiliation: Institute of Hematology, Dongfeng Hospital affiliated to Yunyang Medical college, 16 Daling Avenue, Shiyan 442008, China. ; Center for Stem Cell Research and Application, Institute of Hematology, Union Hospital of Tongji Medical College, Huazhong University of Science and Technology, 1277 Jiefang Avenue, Wuhan 430022, China.
authors.forename: Fang
authors.initials: F
authors.lastname: Zheng
authors.affiliation: Institute of Hematology, Dongfeng Hospital affiliated to Yunyang Medical college, 16 Daling Avenue, Shiyan 442008, China.
authors.forename: Long
authors.initials: L
authors.lastname: Cheng
authors.affiliation: Institute of Hematology, Dongfeng Hospital affiliated to Yunyang Medical college, 16 Daling Avenue, Shiyan 442008, China.
authors.forename: Qiang
authors.initials: Q
authors.lastname: Yu
authors.affiliation: Institute of Hematology, Dongfeng Hospital affiliated to Yunyang Medical college, 16 Daling Avenue, Shiyan 442008, China.
authors.forename: Qihuan
authors.initials: Q
authors.lastname: Liu
authors.affiliation: Institute of Hematology, Dongfeng Hospital affiliated to Yunyang Medical college, 16 Daling Avenue, Shiyan 442008, China.
authors.forename: Fanjun
authors.initials: F
authors.lastname: Cheng
keywords: Erythropoietin; Granulocyte-colony stimulating factor; Mobilization; Peripheral blood; Stem cells