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- W1969209789 abstract "Abstract: Background: Porcine dendritic cells (DC) are likely to be pivotal cells in the initiation of stimulatory and potential tolerogenic responses to xenoantigens, however, there are limited studies characterizing these antigen presenting cells. Methods: Porcine PBMC (CD172a + ) were cultured with GM‐CSF and IL‐4 and phenotype and functional capabilities assessed. Lipopolysaccharide (LPS), IL‐10, and IL‐3 were added to the GM‐CSF/IL‐4 DC cultures to determine phenotypic and functional changes. Quantitative real‐time polymerase chain reaction (PCR) for key cytokines was performed and the modified porcine DC were further assessed by primary mixed lymphocyte reaction to determine the effect of LPS, IL‐10, and IL‐3 on stimulatory capability. Results: Porcine PBMC (CD172 + ) cultured with GM‐CSF and IL‐4 produced cells with DC morphology, which were major histocompatability complex (MHC) class II + , CD14 −/lo , and CD1a lo . Addition of IL‐10 or IL‐3 to GM‐CSF/IL‐4 DC cultures produced cells with lower levels of MHC class II and higher levels of antigen uptake consistent with less mature DC. Quantitative real‐time PCR of DC showed the addition of IL‐10 induced an increase in IL‐10 mRNA, no detectable IL‐12, and reduced IL‐6 mRNA. The addition of IL‐3 to DC cultures decreased IL‐12, IL‐6 and tumor necrosis factor (TNF), with no change in IL‐10 mRNA. GM‐CSF/IL‐4 DC induced strong human lymphocyte proliferation, compared with significantly reduced stimulatory capacity induced by IL‐10 and IL‐3 treated DC cultures. Conclusions: The profound effect on differential DC cytokine profile and reduced human anti‐pig responses has important therapeutic implications in xenotransplantation. The mechanism of altered regulation warrants further investigation." @default.
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- W1969209789 date "2008-07-01" @default.
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- W1969209789 title "Differential cytokine expression and regulation of human anti-pig xenogeneic responses by modified porcine dendritic cells" @default.
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- W1969209789 doi "https://doi.org/10.1111/j.1399-3089.2008.00477.x" @default.
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