G-CSF and/or M-CSF accelerate differentiation of bone marrow cells into endothelial progenitor cells in vitro

Yuming Zhang, Yasushi Adachi, Masayoshi Iwasaki, Keizo Minamino, Yasuhiro Suzuki, Keiji Nakano, Yasushi Koike, Hiromi Mukaide, Akio Shigematsu, Naoko Kiriyama, Chunfu Li, Susumu Ikehara
Oncology Reports 2006, 15 (6): 1523-7
It has been reported that granulocyte-colony stimulating factor (G-CSF) and granulocyte-macrophage-colony stimulating factor (GM-CSF) can mobilize endothelial progenitor cells (EPCs) in bone marrow cells (BMCs) into peripheral blood (PB) in vivo. Previously, we also reported that macrophage-colony stimulating factor (M-CSF) can mobilize EPCs into PB, which results in the rapid recovery of blood flow in induced-ischemia limbs by augmenting the number of intramuscular capillaries in vivo. In the present study, we demonstrate that M-CSF and/or G-CSF can increase EPCs from lineage (CD3, B220, Gr-1, Mac-1, CD11c, Ter119, NK1.1 or CD31)-negative BMCs in vitro. Lineage-negative BMCs were cultured with or without M-CSF and/or G-CSF. Three days after culture with M-CSF and/or G-CSF, the number of Flk-1+/CD45-, Sca-1+/CD45-, CD31+/CD45- or CD146+/CD45- cells increased in comparison with no cytokines. When the cultured BMCs with or without G-CSF and/or M-CSF were intravenously injected into ischemia-induced hindlimbs of mice, the number of intramuscular capillaries in the ischemia-induced legs increased; BMCs cultured with G-CSF and/or M-CSF were more effective than those of cytokine non-treated BMCs. These results suggest that M-CSF and/or G-CSF can induce the differentiation of BMCs into EPCs, even in vitro.

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