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CD4(+) type II NKT cells mediate ICOS and programmed death-1-dependent regulation of type 1 diabetes
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2012 (English)In: Journal of Immunology, ISSN 0022-1767, E-ISSN 1550-6606, Vol. 188, no 7, 3138-3149 p.Article in journal (Refereed) Published
Abstract [en]

Type 1 diabetes (T1D) is a chronic autoimmune disease that results from T cell-mediated destruction of pancreatic β cells. CD1d-restricted NKT lymphocytes have the ability to regulate immunity, including autoimmunity. We previously demonstrated that CD1d-restricted type II NKT cells, which carry diverse TCRs, prevented T1D in the NOD mouse model for the human disease. In this study, we show that CD4(+) 24αβ type II NKT cells, but not CD4/CD8 double-negative NKT cells, were sufficient to downregulate diabetogenic CD4(+) BDC2.5 NOD T cells in adoptive transfer experiments. CD4(+) 24αβ NKT cells exhibited a memory phenotype including high ICOS expression, increased cytokine production, and limited display of NK cell markers, compared with double-negative 24αβ NKT cells. Blocking of ICOS or the programmed death-1/programmed death ligand 1 pathway was shown to abolish the regulation that occurred in the pancreas draining lymph nodes. To our knowledge, these results provide for the first time cellular and molecular information on how type II CD1d-restricted NKT cells regulate T1D.

Place, publisher, year, edition, pages
2012. Vol. 188, no 7, 3138-3149 p.
National Category
Immunology in the medical area
Identifiers
URN: urn:nbn:se:umu:diva-64531DOI: 10.4049/jimmunol.1101390ISI: 000302150300028PubMedID: 22371394OAI: oai:DiVA.org:umu-64531DiVA: diva2:602164
Available from: 2013-01-31 Created: 2013-01-31 Last updated: 2017-12-06Bibliographically approved

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Holmberg, Dan

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