PNAS:脑细胞酸碱不平衡可导致阿尔茨海默症

2018-08-05 海北 MedSci原创

阿尔茨海默病是老年痴呆症的最常见原因。 大多数病例是偶然发生的,40-65%的患者携带至少一份载脂蛋白E的E4等位基因。

阿尔茨海默病是老年痴呆症的最常见原因。 大多数病例是偶然发生的,40-65%的患者携带至少一份载脂蛋白EE4等位基因。由于至今为止没有可以阻止疾病进展的药物,因此人们对了解内体对于症状前期的作用非常感兴趣。

最近,来自约翰霍普金斯大学医学院的研究人员发现,ApoE4星形胶质细胞中过度的内体酸化是由Na + / H +交换剂NHE6的下调引起的,并且通过LRP1受体的细胞内螯合导致淀粉样蛋白β)肽的清除缺陷。表观遗传修饰因子恢复NHE6的表达以碱化内体pH,增加LRP1的表面表达,可以纠正星形胶质细胞中的清除缺陷。

因此,内体pH可以作为校正淀粉样蛋白病症的潜在靶标。

原始出处:

Hari Prasad et al. Amyloid clearance defect in ApoE4 astrocytes is reversed by epigenetic correction of endosomal pHProceedings of the National Academy of Sciences, 2018; 115 (28): E6640 DOI: 10.1073/pnas.1801612115


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    2019-03-10 docwu2019
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    2018-08-05 坚强007

    学习中

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