GM-CSF Promotes Chronic Disability in Experimental Autoimmune Encephalomyelitis by Altering the Composition of Central Nervous System-Infiltrating Cells, but Is Dispensable for Disease Induction.

GM-CSF Promotes Chronic Disability in Experimental Autoimmune Encephalomyelitis by Altering the Composition of Central Nervous System-Infiltrating Cells, but Is Dispensable for Disease Induction.
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GM-CSF通过改变中枢神经系统渗透细胞的组成来促进实验性自身免疫性脑脊髓炎的慢性残疾,但可用于疾病诱导。

DOI:
10.4049/jimmunol.1701484
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发表时间:
2018-02-01
期刊:
Journal of immunology (Baltimore, Md. : 1950)
影响因子:
--
通讯作者:
Segal BM
Segal BM
中科院分区:
其他
文献类型:
--
作者:
Duncker PC;Stoolman JS;Huber AK;Segal BM

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粒细胞巨噬细胞集落刺激因子(GM-CSF)被认为是实验性自身免疫性脑脊髓炎(EAE)以及多发性硬化症发病机制中的关键细胞因子。 GM-CSF 缺陷的 C57BL/6 小鼠对髓磷脂少突胶质细胞糖蛋白 35-55 片段 (MOG35-55) 免疫诱导的 EAE 具有抵抗力。 GM-CSF 在 EAE 中的作用机制尚不清楚。在这里,我们发现 GM-CSF 增加了小鼠皮肤引流淋巴结中 MOG35-55 特异性 T 细胞的积累,但对于致脑炎 T 细胞的发育来说不是必需的。 MOG35-55特异性T细胞过继转移受体中GM-CSF受体信号传导的废除并没有改变EAE的发生率或其初始临床病程的轨迹,但限制了慢性CNS组织损伤和神经功能障碍的程度。临床病程减弱与中枢神经系统浸润内 MOG35-55 特异性 T 细胞、髓系树突状细胞和中性粒细胞相对缺乏以及 B 细胞丰富有关。我们的数据表明,GM-CSF 通过多效性途径导致 EAE 中的慢性组织损伤和残疾,但在早期病变形成和神经功能缺损发作期间是可有可无的。
Granulocyte-macrophage colony-stimulating factor (GM-CSF) has been portrayed as a critical cytokine in the pathogenesis of experimental autoimmune encephalomyelitis (EAE) and, ostensibly, in multiple sclerosis. C57BL/6 mice deficient in GM-CSF are resistant to EAE induced by immunization with the 35–55 fragment of myelin oligodendrocyte glycoprotein (MOG35–55). The mechanism of action of GM-CSF in EAE is poorly understood. Here we show that GM-CSF augments the accumulation of MOG35–55-specific T cells in the skin draining lymph nodes of primed mice, but is not required for the development of encephalitogenic T cells. Abrogation of GM-CSF receptor signaling in adoptive transfer recipients of MOG35–55-specific T cells did not alter the incidence of EAE, or the trajectory of its initial clinical course, but limited the extent of chronic CNS tissue damage and neurological disability. The attenuated clinical course was associated with a relative dearth of MOG35–55-specific T cells, myeloid dendritic cells, and neutrophils, and an abundance of B cells, within CNS infiltrates. Our data indicate that GM-CSF drives chronic tissue damage and disability in EAE via pleiotropic pathways, but is dispensable during early lesion formation and the onset of neurological deficits.
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