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Updated: Jun 7, 2026
Introduction to the Ultrasound Targeted Microbubble Destruction Technique
Published on: June 12, 2011
[Ultrasound-mediated microbubble destruction enhances LMP-1 gene transfection into dendritic cells in vivo]
Rui-feng Xu1, Min Shi, Chang-xuan You
1Department of Oncology, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China. xuruifeng2003@163.com
Objective:
To investigate the transfection efficiency and the optimal conditions of delivering latent membrane protein-1 (LMP-1) gene to dendritic cells (DCs) by ultrasound exposure combined with contrast agent.
Methods:
Human DCs were cultured in vivo and transfected with the recombinant plasmid pEGFP-C3-LMP1 under varying conditions including ultrasound intensities, exposure time and microbubble contrast agent concentration. The transfection efficiency was assessed by fluorescent microscopy and flow cytometry, and the cell viability by trypan blue exclusion test.
Results:
An exposure time of 60 s at MI 1.0 with a microbubble contrast agent concentration of 20% resulted in the optimal effect of delivering the recombinant plasmid pEGFP-C3-LMP1 into the DCs, with a transfection efficiency of (14.37∓2.12)%. Over 90% of the transfected cells were viable after the transfection.
Conclusion:
Microbubble contrast agent combined with ultrasound exposure can enhance the delivery of recombinant plasmid pEGFP-C3-LMP1 into the DCs.
