Astrocytes from familial and sporadic ALS patients are toxic to motor neurons.

Astrocytes from familial and sporadic ALS patients are toxic to motor neurons.
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DOI:
10.1038/nbt.1957
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发表时间:
2011-08-10
影响因子:
46.9
通讯作者:
--
中科院分区:
工程技术1区
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肌萎缩侧索硬化症(ALS)是一种致命的运动神经元(MN)疾病,其中星形胶质细胞是家族性ALS(fALS)中MN死亡的重要原因。然而,这些结论部分来自基于超氧化物歧化酶1(SOD1)基因内显性突变的fALS啮齿动物模型,占所有ALS病例的不到2%。在这里,我们从fALS和散发性ALS(sALS)患者的死后组织中产生星形胶质细胞,并表明来自两个患者组的星形胶质细胞对MN具有相似的毒性。此外,我们表明,SOD1是一个可行的目标sALS,因为它的敲低显着减弱星形胶质细胞介导的毒性对MN。我们的数据突出了星形胶质细胞作为sALS中的非细胞自主成分,并提供了第一个体外模型系统来研究常见的疾病机制并评估sALS和fALS的潜在治疗方法。
Amyotrophic Lateral Sclerosis (ALS) is a fatal motor neuron (MN) disease with astrocytes implicated as a significant contributor to MN death in familial ALS (fALS). However, these conclusions, in part, derive from rodent models of fALS based upon dominant mutations within the superoxide dismutase 1 (SOD1) gene which account for less than 2% of all ALS cases. Here, we generated astrocytes from post-mortem tissue from both fALS and sporadic ALS (sALS) patients, and show that astrocytes derived from both patient groups are similarly toxic to MNs. In addition, we show that SOD1 is a viable target for sALS, as its knockdown significantly attenuates astrocyte-mediated toxicity towards MNs. Our data highlight astrocytes as a non-cell autonomous component in sALS and provide the first in vitro model system to investigate common disease mechanisms and evaluate potential therapies for sALS and fALS.
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