Abstract:
:Malignant gliomas are refractory to conventional therapies, including surgery, radiotherapy and chemotherapy. Thus, a variety of therapies such as the inhibition of angiogenesis and signal transduction pathways have been attempted. In the present study, we have evaluated the combined effect of endostatin, an inhibitor of angiogenesis, and a DNA enzyme targeting the protein kinase Calpha (PKCalpha) gene expression. Inhibition of PKCalpha by a nuclease-resistant DNA enzyme eliminated PKCalpha gene expression and induced apoptosis in most glioma cells. To assess the efficacy of endostatin and the PKCalpha DNA enzyme in vivo, rats bearing the intracranial tumor BT(4)C were given a combined treatment of endostatin and the PKCalpha enzyme. Survival was significantly enhanced by continuous delivery of endostatin (P<.0004) and rats treated with a single injection of the active DNA enzyme lived significantly longer than those treated with the inactive form (P<.045). Interestingly, a single injection of the PKCalpha DNA enzyme in combination with continuous delivery of endostatin significantly improved animal survival compared with PKCalpha (P<.0009) or endostatin (P<.025) alone. Thus, the combined treatment may represent an attractive therapeutic strategy against malignant gliomas.
journal_name
Neoplasiajournal_title
Neoplasia (New York, N.Y.)authors
Sorensen DR,Leirdal M,Iversen PO,Sioud Mdoi
10.1038/sj.neo.7900271keywords:
subject
Has Abstractpub_date
2002-11-01 00:00:00pages
474-9issue
6eissn
1522-8002issn
1476-5586journal_volume
4pub_type
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