OPTIMIZATION OF ELECTROPORATION PARAMETERS FOR TRANSFECTION OF PLASMID DNA INTO MURINE BONE MARROW-DERIVED DENDRITIC CELL

Objective To explore the optimal electroporation parameters for transfection of plasmid DNA into murine bone marrow-derived dendritic cells. Methods Murine bone marrow-derived dendritic cells(DCs) were electroporated with plasmid DNA in varied conditions, such as electrical voltage, pulse time,pre-electroporation cell condition and serum concentration in electrical buffer. Inverted fluorescence microscope and flow cytometer were used to determine the transfection efficiency. Some of the DCs genetically modified under different conditions were stained with trypan-blue and its viability was observed microscopically 48h after electroporation. Results Highest transfection efficiency (22.10%) could be reached when electrical voltage was 250V and pulse time was 20ms. Refreshing the culture medium pre-electroporation may help the cells recover more easily from gene transfer. Besides, electrical buffer containing serum may benefit the viability of DC after electroporation and temperature may has little influence on transfection efficiency. Conclusion Our observations demonstrated plasmid DNA could be efficiently transferred into murine bone marrow-derived DCs by electroporation. These data may helpful for cancer research related to murine DC transfection.

Objective To explore the optimal electroporation parameters for transfection of plasmid DNA into murine bone marrow-derived dendritic cells. Methods Murine bone marrow-derived dendritic cells （DCs） were electroporated with plasmid DNA in varied conditions, such as electrical voltage, pulse time ,pre-electroporation cell condition and serum concentration in electrical buffer, lnverted fluorescence microscope and flow cytometer were used to determine the transfection efficiency. Some of the DCs genetically modified under different conditions were stained with trypan-blue and its viability was observed microscopically 48h after electroporation. Results Highest transfection efficiency （22.10%） could be reached when electrical voltage was 250V and pulse time was 20ms. Refreshing the culture medium pre-electroporation may help the cells recover more easily from gene transfer. Besides, electrical buffer containing serum may benefit the viability of DC after electroporation and temperature may has little influence on transfection efficiency. Conclusion Our observations demonstrated plasmid DNA could be efficiently transferred into murine bone marrow-derived DCs by electroporation. These data may helpful for cancer research related to murine DC transfection.