Correlation of specialized CD16⁺ γδ T cells with disease course and severity in multiple sclerosis

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• 作者：Zhihong Chen ; Mark S. Freedman
• 关键词：Multiple sclerosis ; &#x3b3 ; &#x3b4 ; T cells ; Fc&#x3b3 ; receptor III (CD16) ; Progression ; Proinflammatory cytokine ; IL-15
• 刊名：Journal of Neuroimmunology
• 出版年：2008
• 期刊代码：32_01655728
• 类别：neu
• 出版时间：February 2008
• 卷：194
• 期：1-2
• 页码：147-152
• 文件大小：324 K

摘要

γδ T cells may be important innate immune system contributors to the immunopathogenesis of multiple sclerosis (MS), though the mechanisms are not yet fully understood. CD16 is a low affinity Fcγ receptor, an activation receptor for γδ T cells, and a mediator of cytotoxicity. In this study, we found that the percentage of CD16⁺ γδ T cells is elevated in MS patients compared with healthy controls. The increase is especially pronounced in patients with a progressive course of the disease, and the extent of this elevation shows a positive correlation with the time of disease progression and severity. In vitro cultured γδ T cells can be shown to upregulate the expression of CD16 in response to inflammatory cytokines such as IL-2 and -15, that have been shown to be elevated in progressive disease. These results suggest that CD16 expressing γδ T cells are somehow involved in the process of disease progression. Understanding more about these cells and their particular function in progressive vs. non-progressive disease could provide important clues to the mechanism of immune-mediated MS disease progression.