The role of Gr1+ cells after anti-CD20 treatment in type 1 diabetes in nonobese diabetic mice.

The role of Gr1+ cells after anti-CD20 treatment in type 1 diabetes in nonobese diabetic mice.
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DOI:
10.4049/jimmunol.1101590
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发表时间:
2012-01-01
期刊:
Journal of immunology (Baltimore, Md. : 1950)
影响因子:
--
通讯作者:
Wen L
Wen L
中科院分区:
其他
文献类型:
--
作者:
Hu C;Du W;Zhang X;Wong FS;Wen L

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Studies suggest that Gr1+CD11b+ cells have immunoregulatory function and these cells may play an important role in autoimmune diseases. In this study, we investigated the regulatory role of Gr1+CD11b+ cells in protecting against type 1 diabetes in NOD mice. Here we showed that temporary B cell depletion induced the expansion of Gr1+CD11b+ cells. Gr1+CD11b+ cells not only directly suppress diabetogenic T cell function, but can also induce Treg differentiation in a TGF-β-dependent manner. Furthermore, we found that Gr1+CD11b+ cells could suppress diabetogenic CD4 and CD8 T cell function in an IL-10-, nitric oxide- and cell contact- dependent manner. Interestingly, single anti-Gr1 monoclonal antibody treatment can also induce a transient expansion of Gr1+CD11b+ cells that delayed diabetes development in NOD mice. Our data suggest that Gr1+CD11b+ cells contribute to the establishment of immune tolerance to pancreatic islet autoimmunity. Manipulation of Gr1+CD11b+ cells could be considered as a novel immunotherapy for the prevention of type 1 diabetes.
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