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醋酸格拉替雷治疗使多发性硬化症患者的单核细胞激活谱恢复至健康对照者的水平。

Glatiramer acetate treatment normalized the monocyte activation profile in MS patients to that of healthy controls.

作者信息

Chuluundorj Delgertsetseg, Harding Scott A, Abernethy David, La Flamme Anne Camille

机构信息

School of Biological Sciences, Victoria University of Wellington, Wellington, New Zealand.

Cardiology Department, Wellington Regional Hospital, Wellington, New Zealand.

出版信息

Immunol Cell Biol. 2017 Mar;95(3):297-305. doi: 10.1038/icb.2016.99. Epub 2016 Oct 3.

Abstract

Multiple sclerosis (MS) is an immune-mediated disease of the central nervous system, and monocytes contribute to MS-associated neuroinflammation. While classically activated monocytes promote inflammation, type II-activated monocytes improve the course of MS. This study investigated type II activation of monocytes and their two main subsets, namely CD14 (CD14CD16 subset) and CD16 monocytes (CD14CD16 subset), by glatiramer acetate (GA) or intravenous immunoglobulin-associated immune complexes (IC), both of which are known MS treatments. Total monocytes and subsets were isolated from peripheral blood mononuclear cells (PBMC) of healthy controls, untreated MS patients (MS) and GA-treated MS patients (GA-MS). In contrast to the more activated ex vivo profile of monocytes from the MS group, monocytes from the GA-MS group resembled those from healthy controls. In vitro type II activation with GA primarily reduced CD40, CD86 and IL-12p40 whereas type II activation with IC consistently reduced CD40 but increased interleukin-10 (IL-10), suggesting that the GA and IC activation pathways are distinct. Moreover, while GA treatment reduced IL-12p40 by both CD14 and CD16 subsets, IC treatment only enhanced IL-10 by the CD16 subset. Further analysis of the CD16 subset revealed that MS patients had a greatly expanded CD14CD16 population while both CD14CD16 and CD14CD16 monocyte populations were expanded in GA-MS patients. Finally, a global analysis of the ex vivo monocyte data indicated that GA treatment distinctly altered the monocyte profile of MS patients, further supporting the idea that GA directly targets monocytes.

摘要

多发性硬化症(MS)是一种中枢神经系统的免疫介导性疾病,单核细胞参与了与MS相关的神经炎症。虽然经典激活的单核细胞会促进炎症,但II型激活的单核细胞会改善MS的病程。本研究调查了醋酸格拉替雷(GA)或静脉注射免疫球蛋白相关免疫复合物(IC)对单核细胞及其两个主要亚群(即CD14⁺(CD14⁺CD16⁻亚群)和CD16⁺单核细胞(CD14⁻CD16⁺亚群))的II型激活作用,这两种物质都是已知的MS治疗药物。从健康对照者、未经治疗的MS患者(MS)和接受GA治疗的MS患者(GA-MS)的外周血单核细胞(PBMC)中分离出总单核细胞及其亚群。与MS组单核细胞在体外更具激活特征不同,GA-MS组的单核细胞与健康对照者的相似。GA体外II型激活主要降低了CD40、CD86和IL-12p40,而IC的II型激活持续降低了CD40但增加了白细胞介素-10(IL-10),这表明GA和IC的激活途径不同。此外,虽然GA治疗通过CD14和CD16亚群都降低了IL-12p40,但IC治疗仅通过CD16亚群增强了IL-10。对CD16亚群的进一步分析显示,MS患者的CD14⁻CD16⁺群体大幅扩大,而在GA-MS患者中,CD14⁺CD16⁻和CD14⁻CD16⁺单核细胞群体均扩大。最后,对体外单核细胞数据的整体分析表明,GA治疗明显改变了MS患者的单核细胞特征,进一步支持了GA直接靶向单核细胞的观点。

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