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  • Title: Recombinant vaccinia virus expressing cytokine GM-CSF as tumor vaccine.
    Author: Chatterjee SK, Qin H, Manna S, Tripathi PK.
    Journal: Anticancer Res; 1999; 19(4B):2869-73. PubMed ID: 10652566.
    Abstract:
    The efficacy of a recombinant vaccinia virus (rvv-GM-CSF) expressing the granulocyte macrophage colony stimulating factor (GM-CSF) as tumor vaccine was evaluated in the murine B16-F10 melanoma model. The vaccine was prepared by infection of irradiated tumor cells with rvv-GM-CSF. Control vaccine was B-16 cells infected with a recombinant vaccinia virus expressing Escherichia coli beta-galactosidase (rvv-lacZ). Pre-vaccination of naive C57BL/6 mice later inoculated with tumor cells and treatment of mice bearing tumors with GM-CSF vaccine inhibited tumor development and prolonged survival. Lung metastasis of B-16 was also inhibited by treatment with GM-CSF vaccine. The vaccine effects appeared to be tumor cell specific. The efficacy of the vaccine was comparable to a retroviral vaccine (MFG-muGM-CSF) in this system. The vaccine was also effective when rvv-GM-CSF was directly injected into the tumor. These data suggest that this vaccine approach has potential for use in cancer treatment, especially for patients with easily accessible tumors.
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