A novel nanoparticle containing MUG peptide with BTLA induces T cell tolerance and prevents multiple sclerosis

作者：Yuan, Bangqing; Zhao, Lin; Fu, Fenlan; Liu, Yongping; Lin, Chuangan; Wu, Xianqun; Shen, Hanchao; Yang, Zhao^*

来源：Molecular Immunology, 2014, 57(2): 93-99.

DOI：10.1016/j.molimm.2013.08.006

• Nanoparticle
• MOG peptide
• BTLA
• T cell tolerance
• Multiple sclerosis

Accumulative evidence demonstrates that multiple sclerosis (MS) is caused by activation of myelin Ag-reactive CD4+ T cells. Therefore, the CD4+ T cells specific for myelin Ag may be the important therapeutical target of MS. The novel coinhibitory receptor B and T lymphocyte attenuator (BTLA) may have a regulatory role in maintaining peripheral tolerance, however, its role in MS is still unknown. In this study, a novel nanoparticle containing MOG peptide with BTLA was designed and transduced into dendritic cells (DCs), and MOG peptide-induced EAE mice were adminstrated with the genetically modified DCs in vivo. The results demonstrated that modified DCs significantly enhanced the proportion of Foxp3+ CD4+ regulatory T cells, increased IL-10 and TGF-beta cytokine secretion, while decreased IL-2 and IFN-gamma cytokine secretion. Furthermore, modified DCs supressed the CD4+ T cell response to MOG, cell infiltration into spinal cord, and the severity of EAE. In contrast, immune response to irrelevant exogenous Ag was not impaired by treatment with modified DCs. These findings suggested that DCs transduced with nanoparticle could induce specific CD4+ T-cells tolerance, which provided a promising therapeutic means to negatively manipulate immune response for autoimmune diseases without inhibition of the immune response to irrelevant Ag.

• 出版日期2014-2
• 单位中国人民解放军南京军区福州总医院