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JAMA Neurol:调节性T细胞扩增可延缓肌萎缩侧索硬化疾病进展

2018-03-09 zhangfan MedSci原创

在肌萎缩侧索硬化(ALS)的疾病进展过程中神经性炎症反应发挥了十分关键的作用。在小鼠模型中CD4 Foxp 3调节T细胞(Tregs)通过浸润中枢神经系统抑制神经炎症,促进ALS小鼠神经保护小胶质细胞的激活。近日研究人员就Tregs在调节人ALS的病理生理以及对ALS动物模型的治疗效果进行了考察。研究招募了33名散发性ALS患者进行临床和功能评估,以及免疫学研究,其结果与38名健康志愿者进行对照。

在肌萎缩侧索硬化(ALS)的疾病进展过程中神经性炎症反应发挥了十分关键的作用。在小鼠模型中CD4 Foxp 3调节T细胞(Tregs)通过浸润中枢神经系统抑制神经炎症,促进ALS小鼠神经保护小胶质细胞的激活。近日研究人员就Tregs在调节人ALS的病理生理以及对ALS动物模型的治疗效果进行了考察。

研究招募了33名散发性ALS患者进行临床和功能评估,以及免疫学研究,其结果与38名健康志愿者进行对照。随后研究人员利用外周白细胞介素2/白细胞介素2单克隆抗体复合物(il-2c) 注射,诱导内源性Treg细胞群扩增,促进与运动神经元变性相关的基因--突变型超氧化物歧化酶1(SOD 1)的表达以考察ALS小鼠的病情变化。

ALS患者中,男性24人,平均年龄58.9岁。研究发现Treg水平与疾病进展情况呈负相关。SOD1G93A小鼠模型中,Treg细胞群扩增可显著降低疾病进展,延长生存时间(160.6 vs 144.9天),更重要的是,Treg扩增与保留运动神经元胞体大小,抑制星形胶质细胞和小胶质细胞免疫反应相关,同时Treg扩增可诱导神经营养因子基因在脊髓和周围神经中表达增加。

研究确定了CD4 Foxp 3调节T细胞的神经保护作用,增加Treg细胞群和外周神经保护活性的策略可能是未来ALS的治疗方向。

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    2018-10-06 chendoc252
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    2018-04-15 yinhl1978
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