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- W2102293090 abstract "Abstract We evaluated the effects, on immunity and survival, of injection of interferon (IFN)-α-transfected dendritic cells (DC-IFN-α) into intracranial tumors in mice immunized previously with syngeneic dendritic cells (DCs) pulsed either with ovalbumin-derived CTL or T helper epitopes. These immunizations protected animals from s.c. challenge with ovalbumin-expressing M05 melanoma (class I+ and class II-negative). Notably, antiovalbumin CTL responses were observed in animals vaccinated with an ovalbumin-derived T helper epitope but only after the mice were challenged with M05 cells. This cross-priming of CTL was dependent on both CD4+ and CD8+ T cells. Because we observed that s.c., but not intracranial, tumors were infiltrated with CD11c+ DCs, and because IFN-α promotes the activation and survival of both DCs and T cells, we evaluated the combinational antitumor effects of injecting adenoviral (Ad)-IFN-α-engineered DCs into intracranial M05 tumors in preimmunized mice. Delivery of DC-IFN-α prolonged survival. This was most notable for animals prevaccinated with both the CTL and T helper ovalbumin epitopes, with 60% (6 of 10) of mice (versus 0 of 10 of control animals) surviving for >80 days after tumor challenge. DC-IFN-α appeared to persist longer than mock-transfected DCs within the intracranial tumor microenvironment, and DC-IFN-α-treated mice exhibited enhanced levels of ovalbumin-specific CTL in draining cervical lymph nodes. On the basis of these results, we believe that local expression of IFN-α by DCs within the intracranial tumor site may enhance the clinical efficacy of peripheral vaccine approaches for brain tumors." @default.
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- W2102293090 date "2004-08-15" @default.
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- W2102293090 title "Delivery of Interferon-α Transfected Dendritic Cells into Central Nervous System Tumors Enhances the Antitumor Efficacy of Peripheral Peptide-Based Vaccines" @default.
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- W2102293090 doi "https://doi.org/10.1158/0008-5472.can-04-0130" @default.
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