The efficiency of human bone marrow (BM) mesenchymal stem cell (MSC) transduction with a bicistronic lentivirus vector was estimated, and the stability of transgene expression in genetically modified MSCs was determined. First-passage BM MSCs were capable of efficient transduction with the bicistronic lentivirus vector. The transduction efficiency depended on the multiplicity of infection (MOI), being 64.64 ± 6.5 and 88.6 ± 2.9% at MOI 10 and 20, respectively. The lentivirus transduction efficiency proved independent on the number of passages of a BM MSC culture, and expression of the egfp and dsRed1 transgenes in genetically modified MSCs remained stable for one month of culturing. A comparison showed that the level of egfp and dsRed1 transgene expression was preserved upon hepatogenic differentiation in vitro. The results provide a basis for further development of multigenic modification of human BM MSCs for research and/or therapeutic purposes.
Russian Journal of Genetics – Springer Journals
Published: Mar 28, 2012
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