Abstract
The transfer of apoptosis genes to tumors is one of the most promising strategies for cancer gene therapy. We have shown that massive apoptosis occurs when wild-type p53 expression is induced in glioma cells carrying a p53 gene mutation. However, adenovirus-mediated p53 gene transfer is ineffective in causing apoptosis in glioma cells that retain a wild-type p53 genotype. We evaluated the effect of E2F-1 overexpression on the growth of gliomas in vitro and in vivo. In the in vitro study, the adenovirus-mediated transfer of exogenous E2F-1 protein precipitated generalized apoptosis in gliomas. The treatment with Ad5CMV-E2F-1 of nude mice carrying subcutaneous gliomas arrested tumor growth. Our results indicate that E2F-1 has anti-glioma activity in vitro and in vivo.
Publication types
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Research Support, Non-U.S. Gov't
MeSH terms
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Adenoviruses, Human / genetics
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Animals
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Apoptosis / genetics
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Apoptosis / physiology*
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Carrier Proteins*
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Cell Cycle Proteins / genetics
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Cell Cycle Proteins / physiology
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Cell Death / genetics
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Cell Death / physiology
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Cell Survival / genetics
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Cell Survival / physiology
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Cyclin-Dependent Kinase Inhibitor p16 / metabolism
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DNA-Binding Proteins / genetics
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DNA-Binding Proteins / physiology
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Disease Models, Animal
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E2F Transcription Factors
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E2F1 Transcription Factor
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Gene Expression / genetics
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Genes, Tumor Suppressor
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Genetic Therapy
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Genetic Vectors / genetics
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Glioma / genetics*
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Glioma / physiopathology
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Glioma / therapy
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Humans
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Mice
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Mice, Inbred BALB C
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Mice, Nude
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Oncogene Protein p21(ras) / metabolism
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Recombinant Fusion Proteins / genetics
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Retinoblastoma Protein / metabolism
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Retinoblastoma-Binding Protein 1
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Transcription Factor DP1
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Transcription Factors / genetics*
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Transcription Factors / physiology
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Transfection / genetics
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Tumor Cells, Cultured
Substances
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Arid4a protein, mouse
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Carrier Proteins
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Cell Cycle Proteins
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Cyclin-Dependent Kinase Inhibitor p16
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DNA-Binding Proteins
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E2F Transcription Factors
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E2F1 Transcription Factor
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E2F1 protein, human
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E2f1 protein, mouse
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Recombinant Fusion Proteins
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Retinoblastoma Protein
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Retinoblastoma-Binding Protein 1
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Transcription Factor DP1
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Transcription Factors
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Oncogene Protein p21(ras)