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GETTS, Daniel R; MARTIN, Aaron J; SHEA, Lonnie D; MILLER, Stephen D; MCCARTHY, Derrick P; TERRY, Rachael L; HUNTER, Zoe N; TECK YAP, Woon; TEAGUE GETTS, Meghann; PLEISS, Michael; XUNRONG LUO; KING, Nicholas Jc
Nature biotechnology, 12/2012, Letnik: 30, Številka: 12Journal Article
Aberrant T-cell activation underlies many autoimmune disorders, yet most attempts to induce T-cell tolerance have failed. Building on previous strategies for tolerance induction that exploited natural mechanisms for clearing apoptotic debris, we show that antigen-decorated microparticles (500-nm diameter) induce long-term T-cell tolerance in mice with relapsing experimental autoimmune encephalomyelitis. Specifically, intravenous infusion of either polystyrene or biodegradable poly(lactide-co-glycolide) microparticles bearing encephalitogenic peptides prevents the onset and modifies the course of the disease. These beneficial effects require microparticle uptake by marginal zone macrophages expressing the scavenger receptor MARCO and are mediated in part by the activity of regulatory T cells, abortive T-cell activation and T-cell anergy. Together these data highlight the potential for using microparticles to target natural apoptotic clearance pathways to inactivate pathogenic T cells and halt the disease process in autoimmunity.
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JCR | SNIP | JCR | SNIP | JCR | SNIP | JCR | SNIP |
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in: SICRIS
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