Abstract:
:Despite the well-documented advantages of the recombinant adeno-associated virus (rAAV) as a gene delivery vehicle, including its non-pathogenic and long-term therapeutic gene expression, there have been very limited studies on its potential for producing persistent anti-tumor effects, particularly in vivo. To address this issue, we constructed rAAV vectors encoding herpes simplex virus 1-thymidine kinase (HSV-TK) or its mutant form (sc39TK) as therapeutic genes, and GFP as a control gene. Effective rAAV-mediated gene delivery was readily observed in human cancer cells using immunocytochemistry and Western blotting. Cell survival analysis following prodrug ganciclovir treatment implied that both preferential and superior cytotoxicity was achieved by rAAV-sc39TK introduction. Persistent anti-tumor effects in vivo were investigated in Balb/c nude mice bearing human cancer cells treated with either rAAV-sc39TK or -GFP. Severe tumor growth inhibition was clearly observed only in the case of sc39TK with ganciclovir treatment. Non-invasive micro-PET imaging using 18F-FHBG directly correlated with persistent anti-tumor effects by sc39TK. Therefore, the present study provides evidence that rAAV-mediated persistent therapeutic gene expression can occur, resulting in long-term anti-tumor activities and that these events can be readily monitored using micro-PET imaging.
journal_name
Oncol Repjournal_title
Oncology reportsauthors
Kim JY,Kim JH,Khim M,Lee HS,Jung JH,Moon DH,Jeong S,Lee Hdoi
10.3892/or.2011.1190subject
Has Abstractpub_date
2011-05-01 00:00:00pages
1263-9issue
5eissn
1021-335Xissn
1791-2431journal_volume
25pub_type
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