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Antitumor efficacy of 34.5ENVE: a transcriptionally retargeted and "Vstat120"-expressing oncolytic virus.


ABSTRACT: Here, we describe the construction and testing of a novel herpes simplex virus type 1 (HSV-1) derived oncolytic virus (OV): 34.5ENVE (viral ICP34.5 Expressed by Nestin promotor and Vstat120 Expressing), for the treatment of cancer. This virus showed significant glioma-specific killing and antiangiogenic effects in vitro and in vivo. Treatment of subcutaneous and intracranial glioma-bearing mice with 34.5ENVE showed a significant increase in median survival of mice in four different glioma models. Histology and dynamic contrast-enhanced magnetic resonance imaging (DCE-MRI) revealed reduced microvessel density (MVD) and increased tumoral necrosis in 34.5ENVE-treated tumor tissue compared to control OV-treated tumor tissue. Collectively, these results describe the construction, efficacy, and impact on tumor microenvironment of a transcriptionally driven OV armed with Vstat120 gene expression. These preclinical results will facilitate future clinical testing of 34.5ENVE.

SUBMITTER: Yoo JY 

PROVIDER: S-EPMC3277242 | biostudies-literature | 2012 Feb

REPOSITORIES: biostudies-literature

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Antitumor efficacy of 34.5ENVE: a transcriptionally retargeted and "Vstat120"-expressing oncolytic virus.

Yoo Ji Young JY   Haseley Amy A   Bratasz Anna A   Chiocca E Antonio EA   Zhang Jianying J   Powell Kimerly K   Kaur Balveen B  

Molecular therapy : the journal of the American Society of Gene Therapy 20111025 2


Here, we describe the construction and testing of a novel herpes simplex virus type 1 (HSV-1) derived oncolytic virus (OV): 34.5ENVE (viral ICP34.5 Expressed by Nestin promotor and Vstat120 Expressing), for the treatment of cancer. This virus showed significant glioma-specific killing and antiangiogenic effects in vitro and in vivo. Treatment of subcutaneous and intracranial glioma-bearing mice with 34.5ENVE showed a significant increase in median survival of mice in four different glioma models  ...[more]

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