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Endogenous ERMAP Affects T-Cell Function in EAE Mice

delete2025-03-11
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PRE
AI
K
Keke He
K
Kezhu Chen
R
Rong Hu
W
Wen, Tinghao
李元第 封面图
李元第 (Yuandi Li)
X
Xia Lu
李
李晓 (Xiao Li)
Y
Youbo Zhao
D
Dongbing Cui
J
Jie Gao
DOI:10.1111/imm.13910delete
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摘要

摘要

En 中文
多发性硬化(MS)是一种由髓鞘反应性CD4+ T细胞介导的中枢神经系统(CNS)自身免疫病(AID)。实验性自身免疫性脑脊髓炎(EAE)是广泛用于模拟人类MS的动物模型。红细胞膜相关蛋白(ERMAP)是一种与红细胞黏附相关的、新型的红细胞特异性黏附/受体分子。我们先前已将其表征为一种新型的抑制性免疫检查点分子,并证明重组ERMAP蛋白可缓解EAE;然而,ERMAP的作用机制及其对T细胞功能的影响尚不清楚。在本研究中,我们探究了内源性ERMAP在T细胞和巨噬细胞稳态及EAE发展中的作用。我们在此表明,与野生型(ERMAP+/+)小鼠相比,红细胞膜相关蛋白(ERMAP)基因敲除(ERMAP-/-)小鼠的T细胞和促炎性M1型巨噬细胞数量增加,且T细胞活化增强。当诱导发生EAE时,ERMAP-/-小鼠表现出更严重的EAE症状和病理改变,这与T细胞(尤其是Th1和Th17 T细胞)及M1型巨噬细胞数量增加、T细胞活化增强、炎症因子产生增多,以及Th2 T细胞、调节性T细胞(Tregs)和抗炎性M2型巨噬细胞比例降低有关。RNA测序进行的全基因组分析显示,过氧化物增殖物激活受体(PPAR)通路中的信号分子在ERMAP-/-小鼠中表达下调。我们的结果表明,内源性ERMAP在T细胞和巨噬细胞稳态及EAE发展中发挥重要作用。
Keyword:
ERMAP
experimental autoimmune encephalomyelitis
macrophages
T cells
Tregs

期刊

Immunology 封面图
Immunology
IF:
5
论文数:
284
被引数:
1.3W

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