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JoVE Encyclopedia of Experiments
Neuroscience
小鼠模型中实验性自身免疫性脑脊髓炎的诱导
小鼠模型中实验性自身免疫性脑脊髓炎的诱导
Encyclopedia of Experiments
Neuroscience
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Encyclopedia of Experiments Neuroscience
Induction of Experimental Autoimmune Encephalomyelitis in a Mouse Model

小鼠模型中实验性自身免疫性脑脊髓炎的诱导

Protocol
420 Views
02:27 min
July 8, 2025
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Please note that some of the translations on this page are AI generated. Click here for the English version.

Transcript

首先将含有神经元肽和热杀伤细菌佐剂的乳液皮下注射到麻醉的小鼠中。

在皮下组织中,佐剂吸引抗原呈递细胞或APC,这些细胞在主要组织相容性复合物上处理和呈递神经元肽。

激活的APC到达淋巴结并与幼稚T细胞相互作用,诱导它们分化为自身反应性T细胞。

这些 T 细胞循环并到达血脑屏障或血脑屏障。

接下来,腹腔注射细菌来源的外毒素。

外毒素到达血脑屏障,增加其通透性并允许 T 细胞浸润到中枢神经系统 (CNS)。

在中枢神经系统中,T 细胞与呈递神经元肽的驻留 APC 相互作用,促进细胞因子释放,从而诱导进一步的免疫细胞浸润。

免疫细胞释放促炎细胞因子,导致髓磷脂损伤。

此外,B 细胞与 T 细胞相互作用并分泌自身抗体,进一步损害髓磷脂,从而建立实验性自身免疫性脑脊髓炎 (EAE)。

在此过程中,将 PTX 以每毫升 2 微克溶解在 1x PBS 中,并充分混合。然后,在小鼠皮下注射100微升PLP / CFA,在短暂的异氟醚麻醉期间在尾部底部注射两次。不要注射到颈后,因为上背部或颈部皮肤的任何免疫反应都会干扰头部和脊髓的成像。

免疫后一到两个小时,腹腔内向小鼠注射100微升PTX。

然后,在免疫后24小时,再次向小鼠注射100微升PTX。对于对照小鼠,在尾巴根部注射100微升不含PLP的CFA两次。

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