Pathological stress granules in Alzheimer's disease.

Pathological stress granules in Alzheimer's disease.
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DOI:
10.1016/j.brainres.2014.05.052
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发表时间:
2014-10-10
期刊:
影响因子:
2.9
通讯作者:
Wolozin, Benjamin
Wolozin, Benjamin
中科院分区:
医学3区
文献类型:
--
作者:
Ash, Peter E. A.;Vanderweyde, Tara E.;Youmans, Katherine L.;Apicco, Daniel J.;Wolozin, Benjamin

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神经退行性疾病的一个特征是不溶性蛋白质聚集体在脑中的积累。在某些情况下,包括肌萎缩性侧索硬化症和额颞叶变性,主要聚集实体是RNA结合蛋白。通过调节朊病毒样组装,RNA结合蛋白在RNA代谢中发挥许多功能,这些功能对于中枢神经系统细胞的健康维持是必不可少的。作为应激颗粒(SG)的核心成核因子的那些RNA结合蛋白,包括TIA-1、TIAR、TTP和G3 BP 1,也在其他神经病症的病理学病变中发现,例如阿尔茨海默病,其中标志性聚集蛋白不是RNA结合蛋白。这一发现表明,调节的细胞途径,利用组装的RNA结合蛋白包装和沉默mRNA在应激过程中,可能是不可或缺的异常病理性蛋白质聚集,发生在许多神经退行性疾病。
A feature of neurodegenerative disease is the accumulation of insoluble protein aggregates in the brain. In some conditions, including Amyotrophic Lateral Sclerosis and Frontotemporal lobar degeneration, the primary aggregating entities are RNA binding proteins. Through regulated prion-like assembly, RNA binding proteins serve many functions in RNA metabolism that are essential for the healthy maintenance of cells of the central nervous system. Those RNA binding proteins that are the core nucleating factors of Stress Granules (SGs), including TIA-1, TIAR, TTP and G3BP1, are also found in the pathological lesions of other neurological conditions, such as Alzheimer’s disease, where the hallmark aggregating protein is not an RNA binding protein. This discovery suggests that the regulated cellular pathway, which utilizes assembly of RNA binding proteins to package and silence mRNAs during stress, may be integral in the aberrant pathological protein aggregation that occurs in numerous neurodegenerative conditions.
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