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Interplay between TNF and Regulatory T Cells in a TNF-Driven Murine Model of Arthritis
被引:60
作者:
Biton, Jerome
[1
]
Semerano, Luca
[1
,2
]
Delavallee, Laure
[1
]
Lemeiter, Delphine
[1
]
Laborie, Marion
[3
]
Grouard-Vogel, Geraldine
[3
]
Boissier, Marie-Christophe
[1
,2
]
Bessis, Natacha
[1
]
机构:
[1] Univ Paris 13, EA4222, F-93000 Bobigny, France
[2] Hop Avicenne, Assistance Publ Hop Paris, Serv Rhumatol, F-93000 Bobigny, France
[3] Neovacs, F-75014 Paris, France
关键词:
TUMOR-NECROSIS-FACTOR;
COLLAGEN-INDUCED ARTHRITIS;
RHEUMATOID-ARTHRITIS;
CUTTING EDGE;
ALPHA;
MICE;
HOMEOSTASIS;
POPULATION;
TOLERANCE;
BLOCKADE;
D O I:
10.4049/jimmunol.1003372
中图分类号:
R392 [医学免疫学];
Q939.91 [免疫学];
学科分类号:
100102 ;
摘要:
CD4(+)CD25(+)Foxp3(+) regulatory T cells (Treg) are involved in several autoimmune diseases, including rheumatoid arthritis. TNF-alpha blockers induce therapeutic benefits in rheumatoid arthritis via a variety of mechanisms. We aimed to characterize the impact on Treg of TNF-alpha overexpression in vivo and of TNF-alpha inhibiting treatments. We used human TNF-alpha transgenic mice as a model of strictly TNF-alpha-dependent arthritis. Our study showed that initial Treg frequency was lower in TNF-alpha transgenic mice than in wild-type mice. However, the course of arthritis was marked by elevation of Treg frequency and a dramatic increase in expression of TNFR2. Antagonizing TNF-alpha with either the anti-human TNF-alpha Ab (infliximab) or active immunotherapy (TNF-kinoid) increased the Treg frequency and upregulated CTLA-4, leading to enhancement of suppressor activity. Moreover, both anti-TNF-alpha strategies promoted the differentiation of a CD62L(-) Treg population. In conclusion, in an in vivo model of TNF-alpha-driven arthritis, Treg frequency increased with inflammation but failed to control the inflammatory process. Both passive and active TNF-alpha-inhibiting strategies restored the suppressor activity of Treg and induced the differentiation of a CD62L(-) Treg population. The Journal of Immunology, 2011, 186: 3899-3910.
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页码:3899 / 3910
页数:12
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