人参总皂甙诱导人内皮细胞和单核细胞表达GM-CSF的实验研究

Experimental Study on Expression of GM-CSF from Human Endothelial Cells and Monocytes Induced by Total Saponins of Panax ginseng

目的:研究人参总皂甙(TSPG)对人内皮细胞和单核细胞表达粒细胞巨噬细胞集落刺激因子(GM-CSF)的影响,及其与人粒单系血细胞发生调控的关系。方法:采用造血祖细胞体外培养、造血生长因子生物学活性检测、免疫细胞化学和核酸分子原位杂交等技术,检测内皮细胞和单核细胞中GM-CSF的表达。结果:经TSPG诱导制备的内皮细胞和单核细胞条件培养液中富含GM-CSF样活性,能显著促进人粒单系造血祖细胞的增殖分化;TSPG能显著促进内皮细胞与单核细胞的GM-CSF蛋白和mRNA表达。结论:TSPG可能通过直接和间接途径促进造血诱导微环境中的内皮细胞和单核细胞合成和分泌GM-CSF,进而促进血细胞生成。

Objective: To study the effect of total saponins of Panax ginseng (TSPG) on the expression of granulocyte-macrophage colony-stimulating factor (GM-CSF) from human endothelial cells and monocytes and the relationship between TSPG and human granulocytopoiesis and monocytopoiesis modulation. Methods: Adopting the hematopoietic progenitor cells culture in vitro, hematopoietic growth factor biological assay, immunocytoche-mistry and nucleic acid in situ hybridization, the GM-CSF expression in the endothelial cells and monocytes were detected. Results: The conditioned cultural media of endothelial and monocytes induced and prepared by TSPG, could significantly promote the proliferation and differentiation of human colony forming unit-granulocyte macrophage (CFU-GM), and enhance the protein and mRNA expression of GM-CSF in endothelial cells and monocytes. Conclusion: TSPG could possibly through direct or indirect route, promote hematopoietic, induce endothelial cells and monocytes in the microenvironment to synthetize and secrete GM-CSF, so as to further promote the proliferation and differentiation of human CFU-GM.