从G-CSF动员的外周血细胞悬液培养的成纤维细胞样细胞的特性分析

目的： 研究从G-CSF动员的外周血细胞（PBC）悬液培养的成纤维细胞样（F-L）细胞的特性。 方法： 取PBC中贴壁细胞分4组培养：①RPMI-1640组；②L-DMEM组；③粒细胞集落刺激因子（G-CSF）组；④白细胞介素-3（IL-3）组。流式细胞仪分析各组培养的F-L细胞特性。 结果： 培养2-3周后，4组均能收获到F-L细胞，细胞贴壁生长，但不融合，不能连续传代培养，③④组细胞数量明显多于①②组，4组F-L细胞表型相似：CD33+、CD11c+、CD64+、CD14+、CD45+、HLA-DR+、CD86+、CD34-、CD38-、CD3-、CD19-、CD56-、CD29-、CD44-、CD105-；与单核细胞（PB-M）表型差异仅CD38表达不同而与间质干细胞（MSC）或树突状细胞（DC）表型明显不同。 结论： 从PBC培养的F-L细胞为巨噬细胞，不是MSC或DC；G-CSF、IL-3能提高F-L细胞培养数量，不改变PB-M向巨噬细胞分化的分化方向。

Characters of the fibroblast-like cells cultured from the mobilized peripheral blood cells

AIM: To explore the characters of fibroblast-like (F-L) cells cultured from granunocyte clony stimunating factor (G-CSF)-mobilized peripheral blood cell (PBC) harvests. METHODS: The adherent cells in the PBC harvests were cultured for 2 week in the mediums of RPMI-1640/L-DMEM/G-CSF or interleukin-3 (IL-3) plus RPMI-1640, the cultured F-L cells were analyzed by flow cytometry (FC). RESULTS: The adherent non-confluent F-L cells obtained from the four groups were similar in their phenotypes: CD33 , CD11c , CD64 , CD14 , CD45 , HLA-DR , CD86 , CD34-, CD38-, CD3-, CD19-, CD56-, CD29-, CD44-, CD105-. The F-L cells are similar to monocytes except CD38-and were distinct from dendritic cells (DC) or mesenchymal stem cells (MSC). CONCLUSION: The cultured F-L cells are macrophages rather than DC or MSC. G-CSF, rhIL-3 enhances their numbers.