Abstract:
:Despite various therapeutic interventions, glioblastoma multiforme (GBM) is one of the most highly vascularized neoplasms in humans with poor prognosis. In this study, we show that a single i.m. injection of an adeno-associated viral (AAV) vector expressing angiostatin, a potent angiogenic inhibitor, effectively suppresses human glioma growth in the brain of nude mice. Approximately 40% of the tumor-bearing mice treated with AAV-angiostatin vector survived for >10 months (the duration of the experiments). In contrast, 100% of the tumor-bearing mice in the control groups, with or without i.m. injection of a control vector AAV-GFP, died because of excessive tumor burden by 6 weeks. High levels of angiostatin produced by the AAV vector were detected in blood circulation for >250 days after the one-time vector injection. The secreted angiostatin specifically targeted neovessels in the brain tumors, as evidenced by the diminished vessel densities and increased apoptosis of tumor cells surrounding these neovessels. Our study thus demonstrates that AAV-mediated antiangiogenesis gene therapy offers efficient and sustained systemic delivery of the therapeutic product, which in turn effectively suppresses glioma growth in the brain.
journal_name
Cancer Resjournal_title
Cancer researchauthors
Ma HI,Guo P,Li J,Lin SZ,Chiang YH,Xiao X,Cheng SYsubject
Has Abstractpub_date
2002-02-01 00:00:00pages
756-63issue
3eissn
0008-5472issn
1538-7445journal_volume
62pub_type
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