Preparation and in vitro siRNA transfection ability of novel siRNA-Loaded nanobubbles
YIN Ting-hui, ZHENG Rong-qin, WANG Ping, ZHENG Bo-wen, REN Jie, ZHANG Xin-ling
Published 2013-10-25
Cite as Chin J Ultrasonogr, 2013,22(10): 901-904. DOI: 10.3760/cma.j.issn.1004-4477.2013.10.023
Abstract
Objective To explore a method for preparing siRNA-loaded nanobubbles (siRNA-NBs) with a special structure and determine the siRNA transfection efficiency in vitro.Methods siRNA-NBs were formed by hetero-assembly of nanobubbles and polymeric siRNA-micelles.Dynamic light scatter and transmission electron microscope were employed to determine the novel structure of siRNA-NBs.Meanwhile,flow cytometery and inverted fluorescence microscope were used to investigate the in vitro siRNA transfection efficiency of siRNA-NBs with low frequency ultrasound exposure.Results The siRNANBs possessed uneven surfaces with the diameter of (332.0 ± 20.4)nm.After low-frequency ultrasound exposure,the in vitro siRNA transfection efficiency of siRNA-NBs was (57.3 ± 2.5)%,with the widely cytoplasmic siRNA distribution.Conclusions The successfully preparation of siRNA-NBs with high transfection efficiency in vitro indicates that the novel ultrasound contrast agent are of great potential in siRNA targeting delivery and gene therapy.
Key words:
Ultrasonography; Microbubbles; Transfection; RNA,small cell interfering
Contributor Information
YIN Ting-hui
Department of Ultrasonography, the Third Affiliated Hospital, Sun Yat-sen University, Guangzhou 510630 ,China
ZHENG Rong-qin
Department of Ultrasonography, the Third Affiliated Hospital, Sun Yat-sen University, Guangzhou 510630 ,China
WANG Ping
Department of Ultrasonography, the Third Affiliated Hospital, Sun Yat-sen University, Guangzhou 510630 ,China
ZHENG Bo-wen
Department of Ultrasonography, the Third Affiliated Hospital, Sun Yat-sen University, Guangzhou 510630 ,China
REN Jie
Department of Ultrasonography, the Third Affiliated Hospital, Sun Yat-sen University, Guangzhou 510630 ,China
ZHANG Xin-ling
Department of Ultrasonography, the Third Affiliated Hospital, Sun Yat-sen University, Guangzhou 510630 ,China