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An enhanced anti-tumor effect of apoptin-cecropin B on human hepatoma cells by using bacterial magnetic particle gene delivery system.
- Source :
-
Biochemical & Biophysical Research Communications . Feb2018, Vol. 496 Issue 2, p719-725. 7p. - Publication Year :
- 2018
-
Abstract
- Abstract The gene therapy of cancer, due to the limit of its efficiency and safety, has not been widely used in clinical. Recently, bacterial magnetic particles (BMPs), which are membrane-bound nanocrystals found in magnetotactic bacteria, have been exploited as a new gene delivery system. However, its application on gene therapy remains to be explored. In our previous study, we found that a combination of cecropin B (ABPs) and apoptin (VP3) could serve as an effective gene therapeutic agent. Thus, in this study, we used BMPs to deliver the co-expression plasmid of these two gene, namely pVAX1-VA, and evaluated its therapeutic effect on human hepatocellular carcinoma (HepG2). Our results showed that BMPs significantly improved the efficiency of gene transfection (almost 3-fold than Lipofectamine 2000 at 48 h, P <.001), which led to stronger apoptosis (in a peak almost 2-fold than Lipofectamine 2000-pVAX1-VA, P <.01) and growth inhibition of HepG2 cells. More importantly, compared with Lipofectamine 2000-pVAX1-VA group, BMP-pVAX1-VA strikingly inhibited tumor growth (0.60 ± 0.09 g vs. 0.88 ± 0.11 g, P <.05) in nude mouse tumor models and increased the tumor-infiltrating lymphocytes considerably without apparent cytotoxicity. These findings suggest that BMPs could be an attractive gene delivery system for gene therapy and provide a potential available treatment for human hepatocellular carcinoma and maybe some other kinds of tumors. Highlights • This is the first time to use BMPs as a gene delivery system for gene therapy. • BMPs significantly improved the transfection efficacy in HepG2 cells. • BMPs enhanced the effect of pVAX1-VA on apoptosis and growth inhibition of HepG2 cells. • BMP-pVAX1-VA strikingly inhibited tumor growth without apparent cytotoxicity in a nude mice tumor model. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 0006291X
- Volume :
- 496
- Issue :
- 2
- Database :
- Academic Search Index
- Journal :
- Biochemical & Biophysical Research Communications
- Publication Type :
- Academic Journal
- Accession number :
- 133765775
- Full Text :
- https://doi.org/10.1016/j.bbrc.2018.01.108