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ARE-Regulated Lentiviral HSV-TK/GCV Gene Therapy

Posted: December 9, 2012 at 7:49 am


In this study, we sought to examine whether this attribute could be exploited in cancer suicide gene therapy by using a lentiviral (LV) vector expressing herpes simplex virus thymidine kinase (HSV-TK/GCV) under the regulation of antioxidant response element (ARE), a cis-acting enhancer sequence that binds Nrf2. In human lung adenocarcinoma cells in which Nrf2 is constitutively overexpressed, ARE activity was found to be high under basal conditions. In this setting, ARE-HSV-TK was more effective than a vector in which HSV-TK expression was driven by a constitutively active promoter. In a mouse xenograft model of lung cancer, suicide gene therapy with LV-ARE-TK/GCV was effective compared with LV-PGK-TK/GCV in reducing tumor size. We conclude that ARE-regulated HSV-TK/GCV therapy offers a pro...

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http://www.medworm.com/index.php?rid=6796989&cid=c_449_6_f&fid=33679&url=http%3A%2F%2Fcancerres.aacrjournals.org%2Fcontent%2F72%2F23%2F6227.short%3Frss%3D1

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