Journal
DRUG DISCOVERY TODAY
Volume 12, Issue 13-14, Pages 548-552Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.drudis.2007.05.002
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CD4+CD25+ regulatory T cells (Tregs) play a crucial role in controlling the development of autoimmune diseases such as rheumatoid arthritis (RA). However, despite an increased number of Tregs, the persistence of inflammation in the rheumatoid joints suggests that Tregs are unable to suppress ongoing disease, perhaps due to an inhibition of their functions by pro-inflammatory cytokines. Treatment of RA patients with anti-TNF-alpha monoclonal antibodies such as infliximab and adalimumab has been found to induce and restore the functions of Tregs. Thus, manipulation of the pro-inflammatory environment in the inflamed synovia via neutralization of inflammatory cytokines by monoclonal antibodies could represent a novel therapeutic strategy for restoring the suppressive functions of Tregs and induction and/or expansion of Tregs in order to reinforce tolerance mechanisms.
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