@article {Wang500-506, author = {Jian jun Wang and Ying Zheng and Fang Yang and Ping Zhao and Huai fang Li}, title = {Survivin Small Interfering RNA Transfected With a Microbubble and Ultrasound Exposure Inducing Apoptosis in Ovarian Carcinoma Cells}, volume = {20}, number = {4}, pages = {500-506--500-506}, year = {2010}, doi = {10.1111/IGC.0b013e3181c5ddfa}, publisher = {BMJ Specialist Journals}, abstract = {Introduction: Small interfering RNA (siRNA) has been used to knock down the expression of specific genes. However, its delivery remains a challenge. Recently, ultrasound combined with microbubbles has been used to deliver plasmid into cells and has shown much superiority. Whether a survivin siRNA transfected with a microbubble contrast agent combined with ultrasound exposure could inhibit survivin expression and induce ovarian cancer cell apoptosis was investigated.Methods: The survivin gene was amplified and inserted into vector pEGFP-N1, resulting in psurvivin-EGFP. Three siRNA expression cassettes (SECs) targeting survivin were obtained by 2-step polymerase chain reaction. The SECs and psurvivin-EGFP were cotransfected into 293T cells. A functional SEC was selected and inserted into pMD18T, resulting in the survivin-targeting siRNA expression plasmid, which was transfected into SKOV-3 ovarian carcinoma cells using SonoVue, a microbubble contrast agent, and ultrasound exposure. Survivin expression was monitored by Western blot, and apoptosis was determined by fluorescence-activated cell sorting.Results: One siRNA effectively inhibited survivin expression. SonoVue with ultrasound effectively delivered survivin siRNA to SKOV-3 cells, inhibited survivin expression, and induced apoptosis.Conclusions: Delivery of survivin siRNA using a microbubble contrast agent combined with ultrasound exposure can effectively inhibit survivin expression and induce apoptosis, providing a new promising approach for siRNA delivery in vivo.}, issn = {1048-891X}, URL = {https://ijgc.bmj.com/content/20/4/500-506}, eprint = {https://ijgc.bmj.com/content/20/4/500-506.full.pdf}, journal = {International Journal of Gynecologic Cancer} }