Abstract
Background
The CD-TK double suicide gene has become an effective therapy for bladder cancer. A novel molecular-targeted ultrasound (US) method has been developed to precisely guide nanobubbles loaded with this gene to regions within bladder tumor cells and is widely used due to its efficiency in delivering drugs to the target tumor.
Methods
Uniform nanoscaled nanobubbles loaded with CD-TK double suicide gene were developed using a thin-film hydration sonication, carbodiimide chemistry approaches, and electrostatic adsorption methods.
Results
In the present study, we synthesized CD-TK double suicide gene-loaded cationic nanobubbles conjugated with anti-VEGFR2 that can bind with VEGFR2-positive cells. Fluorescence and flow cytometry evidence show that CD-TK double suicide gene-loaded nanobubbles were successfully developed. CD-TK-CNBs delivered via US-mediated nanobubble destruction (UMND) enhanced transfection efficiency, overexpression of CD-TK double suicide gene, and tumor cell apoptosis, and inhibited tumor cell growth in vitro.
Conclusions
These CD-TK-CNBs may become a novel treatment for bladder cancer.
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Availability of data and materials
Materials are available upon request.
Abbreviations
- UMND:
-
Ultrasound-mediated nanobubble destruction
- CD:
-
Cytosine deaminase
- US:
-
Ultrasound
- 5-FC:
-
5-Fluorine cytosine
- TK:
-
Thymine kinase gene
- GCV:
-
Ganciclovir
- DPPC:
-
1,2-Dipalmitoyl-sn-glycero-3-phosphocholine
- (DSPE-PEG 2000)-COOH:
-
Carboxyl-modified1,2-distearoyl-sn-glycero-3-phosphoetha-nolamine
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Acknowledgements
This study was approved by The Animal Ethics Committee of Chongqing Medical University and the ARRIVE guidelines followed for the welfare of the animals.
Funding
The present work was sponsored by the National Science Foundation of China No. 81650003, Research on the Frontiers and Application of Chongqing Science and Technology Commission No. cstc2015jcyjA10030, Key Medical Scientific Research Project of Chongqing Municipal Health department No. 2012-1-037, and the Science and Technology Project of Chongqing Yuzhong District No. 20130117, Project of Science and Technology Innovation Foundation of Zhongnan Hospital of Wuhan University No. znpy2018021.
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CH and RG Z conceived of and designed the study. CH, MW, JW, and DP J performed the experiments. CH, JW, and RG Z analyzed and interpreted the data. CH wrote the manuscript. RG Z and JW revised the paper. All authors read and approved the final manuscript.
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Hu, C., Jiang, D., Wu, M. et al. Ultrasound-mediated nanobubble destruction (UMND) facilitates the delivery of VEGFR2-targeted CD-TK-loaded cationic nanobubbles in the treatment of bladder cancer. J Cancer Res Clin Oncol 146, 1415–1426 (2020). https://doi.org/10.1007/s00432-020-03160-7
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DOI: https://doi.org/10.1007/s00432-020-03160-7