Bone Morphogenetic Protein 6 Inhibits the Immunomodulatory Property of BMMSCs via Id1 in Sjögren's Syndrome.

Bone Morphogenetic Protein 6 Inhibits the Immunomodulatory Property of BMMSCs via Id1 in Sjögren's Syndrome.
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骨形态发生蛋白 6 通过 Id1 抑制干燥综合征中 BMMSC 的免疫调节特性

DOI:
10.1155/2018/9837035
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发表时间:
2018
影响因子:
4.3
通讯作者:
Wang H
Wang H
中科院分区:
医学3区
文献类型:
--
作者:
Su Y;Gu Y;Wu R;Wang H

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间充质干细胞(MSC)治疗已成为治疗干燥综合征(SS)的一种有前途的方法。骨髓间充质干细胞(BMMSCs)的免疫调节活性受损在SS患者和动物模型中均被发现,其潜在机制尚不清楚。据报道,BMP 6的表达增加与SS有关。本文的目的是确定BMP 6对BMMSC功能的影响。从SS患者和NOD小鼠中分离出BMMSC,并显示出高水平的BMP 6表达。使用体外BMMSCs分化和体外和体内T细胞增殖和极化测定研究BMP 6对BMMSCs功能的影响。BMP 6促进BMMSCs的成骨分化,抑制BMMSCs的免疫调节功能。BMP 6促进T细胞-BMMSC共培养体系中T细胞增殖和Th 1/Th 17分化。在机制上,BMP 6通过Id 1(DNA结合蛋白1的抑制剂)下调PGE 2并上调IFN-γ。中和BMP 6和敲低Id 1可以恢复BMMSCs在体外和体内的免疫抑制功能。目前的研究结果表明,在BMP介导的MSC功能,这可能有助于更好地了解骨髓间充质干细胞在治疗自身免疫性疾病的作用机制的一个新的角色Id 1。
Mesenchymal stem cells (MSCs) treatment has emerged as a promising approach for treating Sjögren's syndrome (SS). Impaired immunoregulatory activities of bone marrow mesenchymal stem cells (BMMSCs) are found in both SS patients and animal models, and the underlying mechanism is poorly understood. Increased expression of BMP6 is reported to be related to SS. The aim herein was to determine the effects of BMP6 on BMMSCs function. BMMSCs were isolated from SS patients and NOD mice and showed a high level of BMP6 expression. The effects of BMP6 on BMMSCs function were investigated using in vitro BMMSCs differentiation and in vitro and in vivo T cell proliferation and polarization assays. BMP6 increased osteogenic differentiation of BMMSCs and inhibited the immunomodulatory properties of BMMSCs. BMP6 enhanced T cell proliferation and Th1/Th17 differentiation in a T cell-BMMSC coculture system. Mechanistically, BMP6 downregulated PGE2 and upregulated IFN-gamma via Id1 (inhibitor of DNA-binding protein 1). Neutralizing BMP6 and knockdown of Id1 could restore the BMMSCs immunosuppressive function both in vitro and in vivo. The present results suggest a novel role of Id1 in BMP-mediated MSCs function, which may contribute to a better understanding of the mechanism of action of MSCs in treating autoimmune diseases.
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