TDP-43 proteinopathies: a new wave of neurodegenerative diseases.

TDP-43 proteinopathies: a new wave of neurodegenerative diseases.
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DOI:
10.1136/jnnp-2020-322983
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发表时间:
2020-11-11
期刊:
Journal of neurology, neurosurgery, and psychiatry
影响因子:
--
通讯作者:
Vucic S
Vucic S
中科院分区:
其他
文献类型:
--
作者:
de Boer EMJ;Orie VK;Williams T;Baker MR;De Oliveira HM;Polvikoski T;Silsby M;Menon P;van den Bos M;Halliday GM;van den Berg LH;Van Den Bosch L;van Damme P;Kiernan MC;van Es MA;Vucic S

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包含TAR DNA结合蛋白43(TDP-43)的致病性沉积物在一系列神经退行性疾病患者的脑和脊髓中是明显的。例如,大多数散发性肌萎缩侧索硬化患者(高达97%)和相当比例的额颞叶变性患者(约45%)表现出TDP-43阳性神经元包涵体,表明该蛋白在疾病发病机制中的作用。此外,TDP-43包涵体在与多个基因突变相关的家族性ALS表型中很明显,包括TDP-43基因编码(TARDBP)和不相关基因(例如,C9 orf 72)。虽然TDP-43是一种对RNA相关代谢至关重要的必需RNA/DNA结合蛋白,但确定TDP-43介导神经变性的病理生理机制似乎很复杂,并且解开这些分子过程对于开发有效疗法似乎至关重要。这篇综述强调了TDP-43蛋白的关键生理功能,同时考虑了与致病性TDP-43沉积相关的神经退行性疾病的扩展谱,并剖析了TDP-43可能介导神经退行性疾病的关键分子途径。
Inclusions of pathogenic deposits containing TAR DNA-binding protein 43 (TDP-43) are evident in the brain and spinal cord of patients that present across a spectrum of neurodegenerative diseases. For instance, the majority of patients with sporadic amyotrophic lateral sclerosis (up to 97%) and a substantial proportion of patients with frontotemporal lobar degeneration (~45%) exhibit TDP-43 positive neuronal inclusions, suggesting a role for this protein in disease pathogenesis. In addition, TDP-43 inclusions are evident in familial ALS phenotypes linked to multiple gene mutations including the TDP-43 gene coding (TARDBP) and unrelated genes (eg, C9orf72). While TDP-43 is an essential RNA/DNA binding protein critical for RNA-related metabolism, determining the pathophysiological mechanisms through which TDP-43 mediates neurodegeneration appears complex, and unravelling these molecular processes seems critical for the development of effective therapies. This review highlights the key physiological functions of the TDP-43 protein, while considering an expanding spectrum of neurodegenerative diseases associated with pathogenic TDP-43 deposition, and dissecting key molecular pathways through which TDP-43 may mediate neurodegeneration.
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