FUS-SMN protein interactions link the motor neuron diseases ALS and SMA.
FUS-SMN protein interactions link the motor neuron diseases ALS and SMA.
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DOI:
10.1016/j.celrep.2012.08.025
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发表时间:
2012-10-25
期刊:
影响因子:
8.8
通讯作者:
Reed R
中科院分区:
文献类型:
--
作者:
Yamazaki T;Chen S;Yu Y;Yan B;Haertlein TC;Carrasco MA;Tapia JC;Zhai B;Das R;Lalancette-Hebert M;Sharma A;Chandran S;Sullivan G;Nishimura AL;Shaw CE;Gygi SP;Shneider NA;Maniatis T;Reed R
Mutations in the RNA binding protein FUS cause ALS, a fatal adult motor neuron disease. Decreased expression of SMN causes the fatal childhood motor neuron disorder SMA. The SMN complex localizes in both the cytoplasm and nuclear Gems, and loss of Gems is a cellular hallmark of SMA patient fibroblasts. Here, we report that FUS associates with the SMN complex, an interaction mediated by U1 snRNP and by direct interactions between FUS and SMN. Functionally, we show that FUS is required for Gem formation in HeLa cells, and expression of FUS containing a severe ALS-causing mutation (R495X) also results in Gem loss. Strikingly, a reduction in Gems is observed in ALS patient fibroblasts expressing either mutant FUS or TDP-43, another ALS-causing protein that interacts with FUS. The physical and functional interactions between SMN, FUS, TDP-43, and Gems indicate that ALS and SMA share a biochemical pathway, adding strong new support to the view that these motor neuron diseases are related.
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DOI:
10.1097/nen.0b013e318244b635
发表时间:
2012-02
影响因子:
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