4.7 Article

PEG-PBLG nanoparticle-mediated HSV-TK/GCV gene therapy for oral squamous cell carcinoma

Journal

NANOMEDICINE
Volume 3, Issue 6, Pages 813-821

Publisher

FUTURE MEDICINE LTD
DOI: 10.2217/17435889.3.6.813

Keywords

ganciclovir; gene therapy; golden hamster; herpes simplex virus thymidine kinase; nanoparticles; oral squamous cell carcinoma; poly-gamma-benzyl-L-glutamate; polyethylene-glycol

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Aims: Previous studies revealed that drug-loaded poly(ethylene-glycol)-poly(gamma-benzyl-L-glutamate) (PEG-PBLG) nanoparticles exhibit favorable pharmacokinetic characteristics in the treatment of oral squamous cell carcinoma (OSCC). In this study, the characteristics and anticancer effect of herpes simplex virus thymidine kinase (HSV-TK)-loaded PEG-PBLG nanoparticles for OSCC were investigated. Materials & methods: HSV-TK-loaded PEG-PBLG nanoparticles were prepared and their morphology, DNA protection and gene-transfer efficiency were evaluated. Their anticancer effect in vitro and in vivo was determined. Results & discussion: HSV-TK-loaded PEG-PBLG nanoparticles have a core-shell structure and DNA protection and higher genetransfer efficiency. PEG-PBLG nanoparticle-mediated HSV-TK/ganciclovir(GCV) had a strong anticancer effect on Tca8113 cells in vitro and buccal carcinoma induced in golden hamsters. Conclusion: PEG-PBLG nanoparticles may be a superior gene carrier in future clinical applications because of their DNA protection and higher gene-transfer efficiency. The HSV-TK/GCV suicide-gene system had significant antitumor effects on OSCC.

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