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- W2075520527 abstract "Melanoma differentiation-associated gene-7/interleukin-24 (mda-7/IL24), selectively induces apoptosis in cancer cells without harming normal cells. It also exerts immunomodulatory and antiangiogenic effects, as well as potent antitumor bystander effects, making it an ideal candidate for a new anticancer gene therapy. Here, we examined the feasibility of adeno-associated virus type 1 (AAV1) vector-mediated systemic gene therapy using mda-7/IL24. In vitro studies showed that medium conditioned by AAV1-mda7-transducedC2C12 cells induces tumor cell-specific apoptosis and inhibits angiogenesis in a human umbilical vein endothelial cell tube formation assay. To assess the in vivo effects of AAV1-mediated systemic delivery of MDA-7/IL24, we generated a subcutaneous tumor model by injecting Ehrlich ascites tumor cells into the dorsum of DDY mice. A single intravenous injection of AAV1-mda7 (2.0 × 1011 viral genomes) significantly inhibited tumor growth. In addition, terminal deoxynucleotidyl transferase-mediated dUTP nick-end labeling (TUNEL), and immunohistochemical analyses showed significant induction of tumor-cell-specific apoptosis and reduction of microvessel formation within the tumors, and there was a significant increase in survival among the AAV1-mda7-treated mice. These results clearly demonstrate that continuous systemic delivery of MDA-7/IL24 can serve as an effective treatment for cancer. Thus, AAV1 vector-mediated systemic delivery of MDA-7/IL24 represents a potentially important new approach to anticancer therapy. Melanoma differentiation-associated gene-7/interleukin-24 (mda-7/IL24), selectively induces apoptosis in cancer cells without harming normal cells. It also exerts immunomodulatory and antiangiogenic effects, as well as potent antitumor bystander effects, making it an ideal candidate for a new anticancer gene therapy. Here, we examined the feasibility of adeno-associated virus type 1 (AAV1) vector-mediated systemic gene therapy using mda-7/IL24. In vitro studies showed that medium conditioned by AAV1-mda7-transducedC2C12 cells induces tumor cell-specific apoptosis and inhibits angiogenesis in a human umbilical vein endothelial cell tube formation assay. To assess the in vivo effects of AAV1-mediated systemic delivery of MDA-7/IL24, we generated a subcutaneous tumor model by injecting Ehrlich ascites tumor cells into the dorsum of DDY mice. A single intravenous injection of AAV1-mda7 (2.0 × 1011 viral genomes) significantly inhibited tumor growth. In addition, terminal deoxynucleotidyl transferase-mediated dUTP nick-end labeling (TUNEL), and immunohistochemical analyses showed significant induction of tumor-cell-specific apoptosis and reduction of microvessel formation within the tumors, and there was a significant increase in survival among the AAV1-mda7-treated mice. These results clearly demonstrate that continuous systemic delivery of MDA-7/IL24 can serve as an effective treatment for cancer. Thus, AAV1 vector-mediated systemic delivery of MDA-7/IL24 represents a potentially important new approach to anticancer therapy." @default.
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- W2075520527 date "2007-10-01" @default.
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- W2075520527 title "Systemic Cancer Gene Therapy Using Adeno-associated Virus Type 1 Vector Expressing MDA-7/IL24" @default.
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- W2075520527 doi "https://doi.org/10.1038/sj.mt.6300225" @default.
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