Notch signaling inhibits axon regeneration.
Notch signaling inhibits axon regeneration.
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DOI:
10.1016/j.neuron.2011.11.017
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发表时间:
2012-01-26
期刊:
影响因子:
16.2
通讯作者:
Hammarlund M
中科院分区:
文献类型:
--
作者:
El Bejjani R;Hammarlund M
Many neurons have limited capacity to regenerate their axons after injury. Neurons in the mammalian CNS do not regenerate, and even neurons in the PNS often fail to regenerate to their former targets. This failure is likely due in part to pathways that actively restrict regeneration; however, only a few factors that limit regeneration are known. Here, using single-neuron analysis of regeneration in vivo, we show that Notch/lin-12 signaling inhibits the regeneration of mature C. elegans neurons. Notch signaling suppresses regeneration by acting autonomously in the injured cell to prevent growth cone formation. The metalloprotease and gamma-secretase cleavage events that lead to Notch activation during development are also required for its activity in regeneration. Furthermore, blocking Notch activation immediately after injury improves regeneration. Our results define a novel, post-developmental role for the Notch pathway as a repressor of axon regeneration in vivo.
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影响因子:
2.4
作者:
Chao MY;Larkins-Ford J;Tucey TM;Hart AC
通讯作者:
Hart AC
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LEVITAN, D;GREENWALD, I
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GREENWALD, I
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SEYDOUX, G
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