Membrane estrogen receptor regulates experimental autoimmune encephalomyelitis through up-regulation of programmed death 1.

Membrane estrogen receptor regulates experimental autoimmune encephalomyelitis through up-regulation of programmed death 1.
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DOI:
10.4049/jimmunol.0803205
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发表时间:
2009-03-01
期刊:
Journal of immunology (Baltimore, Md. : 1950)
影响因子:
--
通讯作者:
Offner H
Offner H
中科院分区:
其他
文献类型:
--
作者:
Wang C;Dehghani B;Li Y;Kaler LJ;Proctor T;Vandenbark AA;Offner H

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尽管雌激素对多发性硬化症(MS)及其动物模型实验性自身免疫性脑脊髓炎(EAE)具有明显的保护作用,但其治疗应用受到不良副作用的限制,这些副作用被认为主要是通过雌二醇与细胞内雌激素受体α(iERα)结合介导的。在这项研究中,我们发现通过假定的膜雌激素受体 GPR30 发出的信号足以介导针对 EAE 的保护,而 EAE 在 GPR30 基因缺陷的小鼠中明显受损。 G-1(一种在不参与 iER 的情况下选择性激活 GPR30 的激动剂)治疗保留了雌二醇预防临床和组织学 EAE 的能力,且没有雌二醇相关的副作用、细胞因子谱发生偏差,并通过 GPR30 和程序性死亡 1 (PD-1) 依赖性机制增强了 CD4+Foxp3+ Treg 细胞的抑制活性。该研究首次评估了GPR30激活对EAE的保护作用,为G-1等GPR30激动剂在MS中的临床应用提供了坚实的基础。
Although estrogens exert a pronounced protective effect on multiple sclerosis (MS) and its animal model, experimental autoimmune encephalomyelitis (EAE), their therapeutic application has been limited by undesirable side effects thought to be mediated primarily through estradiol binding to intracellular estrogen receptor alpha (iERα). In this study, we found that signaling through the putative membrane estrogen receptor, GPR30, was sufficient to mediate protection against EAE, which was significantly impaired in GPR30 gene-deficient mice. Treatment with G-1, an agonist that selectively activates GPR30 without engagement of the iERs, retained estradiol's ability to protect against clinical and histological EAE without estradiol-associated side effects, deviated cytokine profiles and enhanced suppressive activity of CD4+Foxp3+ Treg cells through a GPR30- and programmed death 1 (PD-1)-dependent mechanism. This study is the first to evaluate the protective effect of GPR30 activation on EAE, and provides a strong foundation for the clinical application of GPR30 agonists such as G-1 in MS.
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