TDP-43 mutations in familial and sporadic amyotrophic lateral sclerosis.

TDP-43 mutations in familial and sporadic amyotrophic lateral sclerosis.
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DOI:
10.1126/science.1154584
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发表时间:
2008-03-21
期刊:
Science (New York, N.Y.)
影响因子:
--
通讯作者:
Shaw CE
Shaw CE
中科院分区:
其他
文献类型:
--
作者:
Sreedharan J;Blair IP;Tripathi VB;Hu X;Vance C;Rogelj B;Ackerley S;Durnall JC;Williams KL;Buratti E;Baralle F;de Belleroche J;Mitchell JD;Leigh PN;Al-Chalabi A;Miller CC;Nicholson G;Shaw CE

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肌萎缩侧索硬化症(ALS)是一种以泛素化的TAR DNA结合蛋白(TDP-43)包涵体为特征的致命性运动神经元疾病。TDP-43在神经系统中的功能尚不确定,其在神经退行性变中的机制作用仍在推测中。我们在散发性和家族性肌萎缩侧索硬化症病例中发现了TARDBP高度保守区域的邻近突变。TARDBPM337V与一个家系内的疾病分离,全基因组扫描证实该连锁限于染色体1p36,该染色体包含TARDBP基因座。突变形式的TDP-43在体外比野生型更容易碎裂,并在体内引起鸡胚胎神经细胞凋亡和发育延迟。我们的证据表明TDP-43和ALS之间存在病理生理联系。
Amyotrophic lateral sclerosis (ALS) is a fatal motor neuron disorder characterised pathologically by ubiquitinated TAR DNA binding protein (TDP-43) inclusions. The function of TDP-43 in the nervous system is uncertain and a mechanistic role in neurodegeneration remains speculative. We identified neighbouring mutations in a highly conserved region of TARDBP in sporadic and familial ALS cases. TARDBPM337V segregated with disease within one kindred and a genome-wide scan confirmed that linkage was restricted to chromosome 1p36, which contains the TARDBP locus. Mutant forms of TDP-43 fragmented more readily than wild-type in vitro and caused neural apoptosis and developmental delay in the chick embryo in vivo. Our evidence suggests a pathophysiological link between TDP-43 and ALS.
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