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- W1525166884 abstract "Dendritic cells (DCs) can be activated by signaling via pathogen receptors, by interaction with activated T cells or by exposure to inflammatory mediators. Clearance of apoptotic cells by DCs is generally considered a silent event that is not associated with an inflammatory response. Necrotic cell death, in contrast, leads to induction of inflammation. However, emerging data challenge the view of apoptotic cells as inherently nonimmunogenic. In this study, we report that the activation state of the apoptotic cell may determine whether the exposed DC becomes activated and rendered proficient in Ag presentation. We show that coculture with activated, but not resting, apoptotic PBMCs leads to up-regulation of surface expression of the costimulatory molecules CD80, CD83, and CD86 in human DCs as well as release of proinflammatory cytokines. Furthermore, we show that DCs exposed to allogeneic, activated apoptotic PBMCs induce proliferation and IFN-gamma production in autologous T cells. Together, these findings show that activated apoptotic PBMCs per se provide an activation/maturation signal to DCs, suggesting that activated apoptotic PBMCs possess endogenous adjuvant properties." @default.
- W1525166884 created "2016-06-24" @default.
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- W1525166884 date "2007-08-01" @default.
- W1525166884 modified "2023-10-02" @default.
- W1525166884 title "Triggering of Dendritic Cell Responses after Exposure to Activated, but Not Resting, Apoptotic PBMCs" @default.
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- W1525166884 doi "https://doi.org/10.4049/jimmunol.179.3.1711" @default.
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