The plasmacytoid dendritic cells evoke Salmonella-specific CTL effector response
Abstract
Introduction: The immunological role of plasmacytoid dendritic cells (pDC) in bacterial infections such as Salmonella has been poorly documented. Therefore, we analyzed the effector function of these cells by presenting cytotoxic T lymphocytes (CTL) with Salmonella Typhimurium antigens.
Objective: To analyze the Salmonella-specific CTL response evoked by pDCs.
Materials and methods: We used plasmacytoid dendritic cells stained with carboxyfluorescein succinimidyl ester (CFSE) and pulsed with OmpC73, Salmonella Kb restricted epitopes or S. Typhimurium as targets for cytotoxicity assays.
Results: Specific lysis was shown to be statistically significant in pDC + OmpC73 for all effector:target ratios (p≤0.05). For pDC + S. Typhimurium, statistical significance was only observed at a 1:100 ratio (p≤0.05) using OmpC73.
Conclusion: Plasmacytoid dendritic cells evoke CTL response during S. Typhimurium infection.
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References
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