Abstract:
:This study aimed to explore the effects of microbubble concentration, gene dosage, cell-microbubble mixing mode and fetal bovine serum (FBS) on gene delivery. 293T cells were transfected with Sonovue microbubbles carrying the hAng-1 gene via ultrasound irradiation. Various ultrasound exposure parameters and microbubble and DNA concentrations were investigated. In addition, FBS and the cell suspension or adherent mode was explored. Transfection efficiency and cell viability were used to determine the optimal transfection parameters. hAng-1 gene transfection efficiency gradually increased with elongation of ultrasound exposure and increasing microbubble concentration. However, if ultrasound irradiation exceeded 1.5 W/cm² and 30 sec or the microbubble concentration was over 20%, hAng-1 gene expression was significantly decreased, coupled with extensive cell death. Gene transfection levels were low under DNA concentrations less than 15 µg/ml. Furthermore, the gene transfer rate was significantly increased under cell suspension mode; FBS had no effect on hAng-1 gene transfection. The integrity of hAng-1 DNA was not affected by ultrasonic irradiation under optimal conditions. The optimal transfection parameters for the hAng-1 gene and Sonovue microbubble were ultrasound exposure of 1.5 W/cm² and 30 sec, 20% microbubbles, 15 µg/ml of DNA and under cell suspension mode.
journal_name
Mol Med Repjournal_title
Molecular medicine reportsauthors
Zhou Q,Chen JL,Chen Q,Wang X,Deng Q,Hu B,Guo RQdoi
10.3892/mmr.2012.1100subject
Has Abstractpub_date
2012-12-01 00:00:00pages
1460-4issue
6eissn
1791-2997issn
1791-3004journal_volume
6pub_type
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