Abstract:
:Carbon monoxide (CO) treatment improves pathogenic outcome of autoimmune diseases by promoting tolerance. However, the mechanism behind this protective tolerance is not yet defined. Here, we show in a transgenic mouse model for autoimmune diabetes that ex vivo gaseous CO (gCO)-treated DCs loaded with pancreatic β-cell peptides protect mice from disease. This protection is peptide-restricted, independent of IL-10 secretion by DCs and of CD4(+) T cells. Although no differences were observed in autoreactive CD8(+) T-cell function from gCO-treated versus untreated DC-immunized groups, gCO-treated DCs strongly inhibited accumulation of autoreactive CD8(+) T cells in the pancreas. Interestingly, induction of β1-integrin was curtailed when CD8(+) T cells were primed with gCO-treated DCs, and the capacity of these CD8(+) T cells to lyse isolated islet was dramatically impaired. Thus, immunotherapy using CO-treated DCs appears to be an original strategy to control autoimmune disease.
journal_name
Eur J Immunoljournal_title
European journal of immunologyauthors
Simon T,Pogu S,Tardif V,Rigaud K,Rémy S,Piaggio E,Bach JM,Anegon I,Blancou Pdoi
10.1002/eji.201242684subject
Has Abstractpub_date
2013-01-01 00:00:00pages
209-18issue
1eissn
0014-2980issn
1521-4141journal_volume
43pub_type
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