Intrinsic membrane hyperexcitability of amyotrophic lateral sclerosis patient-derived motor neurons.
Intrinsic membrane hyperexcitability of amyotrophic lateral sclerosis patient-derived motor neurons.
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DOI:
10.1016/j.celrep.2014.03.019
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发表时间:
2014-04-10
期刊:
影响因子:
8.8
通讯作者:
Woolf CJ
中科院分区:
文献类型:
--
作者:
Wainger BJ;Kiskinis E;Mellin C;Wiskow O;Han SS;Sandoe J;Perez NP;Williams LA;Lee S;Boulting G;Berry JD;Brown RH Jr;Cudkowicz ME;Bean BP;Eggan K;Woolf CJ
Amyotrophic lateral sclerosis (ALS) is a fatal neurodegenerative disease of the motor nervous system. We show using multi-electrode array and patch clamp recordings that hyperexcitability detected by clinical neurophysiological studies of ALS patients is recapitulated in induced pluripotent stem cell-derived motor neurons from ALS patients harboring superoxide dismutase 1 (SOD1), C9orf72 and fused-in-sarcoma mutations. Motor neurons produced from a genetically corrected, but otherwise isogenic, SOD1+/+ stem cell line do not display the hyperexcitability phenotype. SOD1A4V/+ ALS patient-derived motor neurons have reduced delayed-rectifier potassium current amplitudes relative to control-derived motor neurons, a deficit that may underlie their hyperexcitability. The Kv7 channel activator retigabine both blocks the hyperexcitability and improves motor neuron survival in vitro when tested in SOD1 mutant ALS cases. Therefore, electrophysiological characterization of human stem cell-derived neurons can reveal disease-related mechanisms and identify therapeutic candidates.
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影响因子:
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