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Dendritic cell (DC) vaccine is a promising immunotherapy for malignancies, but its clinical efficacy has been questioned. Here we examined the mechanisms of treatment failure with DC vaccine in a murine colon cancer model. DC vaccination of naive mice prevents tumor implantation, but it is ineffective in tumor-bearing hosts despite the induction of tumor-specific CTL activity. Analyses of tumor-specific...
Somatostatin is a regulatory peptide found in abundance in the stomach. We have previously shown that somatostatin is required for IL-4-mediated resolution of Helicobacter pylori gastritis. In the current study, we hypothesize that somatostatin acts directly on antigen-presenting cells in the stomach to lessen the severity of gastritis. To test this hypothesis, we first show that CD11c+ dendritic...
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