脂质体介导骨髓细胞双标志基因转移与体外扩增研究

目的：探讨脂质体介导骨髓细胞基因转移的效率及其表达的稳定性，为基因治疗与基因标志研究提供实验依据。方法：利用脂质体介导，将ＮｅｏＲ和ＬａｃＺ两个标志基因共转导骨髓细胞，通过Ｇ４１８筛选、富集转导阳性细胞，然后扩增这些细胞，观察基因转移率及扩增对转导细胞基因表达稳定性的影响。结果：脂质体介导的骨髓细胞基因转移率为１３．３３％±２．６８％，经Ｇ４１８筛选、富集后，转导阳性细胞可达到４６．０６％±３．４７％。经体外扩增处理，扩增前后无显著性差异。结论：利用脂质体介导的基因转移方法介导骨髓细胞基因转移可获得高效、稳定的表达。

Liposome mediated gene transfer into bone marrow cells and its in vitro expansion

OBJECTIVE: To explore the efficiency of liposome-mediated gene transfer into bone marrow cells and the stability of its expression. METHODS: Two marker genes (Neo and Lac Z) mediated by liposome were co-transferred into bone marrow cells. Following G418 screening,the positive cells were enriched and expanded in vitro. RESULTS: The liposome-mediated gene transfer rate in bone marrow cells was 13.33 +/- 2.68%, and after G418 screening, it was 46.06 +/- 3.47%. The blue colouring rates with X-gal staining of these cells were not significantly different before and after expansion. CONCLUSION: Liposome-mediated gene transfer in bone marrow cells is highly efficient and the expression of the transferred gene is stable.