Microglia induce motor neuron death via the classical NF-κB pathway in amyotrophic lateral sclerosis.

Microglia induce motor neuron death via the classical NF-κB pathway in amyotrophic lateral sclerosis.
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DOI:
10.1016/j.neuron.2014.01.013
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发表时间:
2014-03-05
期刊:
影响因子:
16.2
通讯作者:
Kaspar BK
Kaspar BK
中科院分区:
医学1区
文献类型:
--
作者:
Frakes AE;Ferraiuolo L;Haidet-Phillips AM;Schmelzer L;Braun L;Miranda CJ;Ladner KJ;Bevan AK;Foust KD;Godbout JP;Popovich PG;Guttridge DC;Kaspar BK

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Neuroinflammation is one of the most striking hallmarks of amyotrophic lateral sclerosis (ALS). Nuclear Factor-kappa B (NF-κB), a master regulator of inflammation, is upregulated in spinal cords of ALS patients and SOD1-G93A mice. In this study, we show that selective NF-κB inhibition in ALS astrocytes is not sufficient to rescue motor neuron (MN) death. However, the localization of NF-κB activity and subsequent deletion of NF-κB signaling in microglia rescued MNs from microglial-mediated death in vitro and extended survival in ALS mice by impairing pro-inflammatory microglial activation. Conversely, constitutive activation of NF-κB selectively in wild-type microglia induced gliosis and MN death in vitro and in vivo. Taken together, these data provide a mechanism by which microglia induce MN death in ALS, and suggest a novel therapeutic target that can be modulated to slow the progression of ALS and possibly other neurodegenerative diseases by which microglial activation plays a role.
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