Expansion of regulatory T cells via IL-2/anti-IL-2 mAb complexes suppresses experimental myasthenia.

Expansion of regulatory T cells via IL-2/anti-IL-2 mAb complexes suppresses experimental myasthenia.
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DOI:
10.1002/eji.200939792
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发表时间:
2010-06
影响因子:
5.4
通讯作者:
Shi, Fu-Dong
Shi, Fu-Dong
中科院分区:
医学3区
文献类型:
--
作者:
Liu, Ruolan;Zhou, Qinghua;La Cava, Antonio;Campagnolo, Denise I.;Van Kaer, Luc;Shi, Fu-Dong

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人类自身免疫性疾病通常以CD 4 + CD 25+调节性T细胞(Treg)的相对缺乏为特征。因此,我们假设Treg的扩增可以改善自身免疫性病理。我们在自身免疫性重症肌无力(MG)的实验模型中验证了这一假设,MG是一种B细胞介导的疾病,其特征是针对神经肌肉接头内乙酰胆碱受体的自身抗体。我们发现,注射由细胞因子IL-2和抗IL-2 mAb(JES 6 - 1A 12)组成的免疫复合物,通过CD 4 + CD 25 + Foxp 3+细胞的外周增殖和CD 4 + CD 25 − Foxp 3 −细胞的外周转化,诱导Treg有效且持续的扩增。扩增的Treg有效地抑制了自身反应性T细胞和B细胞对乙酰胆碱受体的反应,并减轻了MG的肌无力特征。因此,IL-2/抗IL-2 mAb复合物可以在体内扩增功能性Treg,为这种治疗MG和其他自身免疫性疾病的模式提供了潜在的临床应用。
Human autoimmune diseases are often characterized by a relative deficiency in CD4+CD25+ regulatory T cells (Treg). We therefore hypothesized that expansion of Treg can ameliorate autoimmune pathology. We tested this hypothesis in an experimental model for autoimmune myasthenia gravis (MG), a B-cell-mediated disease characterized by auto-Ab directed against the acetylcholine receptorwithin neuromuscular junctions. We showed that injection of immune complexes composed of the cytokine IL-2 and anti-IL-2 mAb (JES6-1A12) induced an effective and sustained expansion of Treg,via peripheral proliferation of CD4+CD25+Foxp3+ cells and peripheral conversion of CD4+CD25−Foxp3− cells. The expanded Treg potently suppressed autoreactive T- and B-cell responses to acetylcholine receptor and attenuated themuscular weakness that is characteristic ofMG. Thus, IL-2/anti-IL-2 mAb complexes can expand functional Treg in vivo, providing a potential clinical application of this modality for treatment of MG and other autoimmune disorders.
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