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NKT Cell Stimulation with alpha-Galactosylceramide Results in a Block of Th17 Differentiation after Intranasal Immunization in Mice
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NKT Cell Stimulation with alpha-Galactosylceramide Results in a Block of Th17 Differentiation after Intranasal Immunization in Mice
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Journal Article
NKT Cell Stimulation with alpha-Galactosylceramide Results in a Block of Th17 Differentiation after Intranasal Immunization in Mice
2012
Overview
In a previous study we demonstrated that intranasal (i.n.) vaccination promotes a Th17 biased immune response. Here, we show that co-administration of a pegylated derivative of [alpha]-galactosylceramide ([alpha]GCPEG) with an antigen, even in the presence of Th17-polarizing compounds, results in a strong blocking of Th17 differentiation. Additional studies demonstrated that this phenomenon is specifically dependent on soluble factors, like IL-4 and IFN[gamma], which are produced by NKT cells. Even NK1.1 negative NKT cells, which by themselves produce IL-17A, are able to block Th17 differentiation. It follows that the use of [alpha]GCPEG as adjuvant would enable to tailor Th17 responses, according to the specific clinical needs. This knowledge expands our understanding of the role played by NKT cells in overall control of the cytokine microenvironment, as well as in the overall shaping of adaptive immune responses.
Publisher
Public Library of Science
Subject
