Local, activity-dependent changes in excitability are thought to play a role in various aspects of neuromodulation. Translation of dendritically localized messenger RNAs is one way for a neuron to modify its excitability and signal processing machinery at or near active synapses. Raab-Graham et al. used photoconvertible fluorophores to show that potassium channels are locally translated in dendrites. This local translation is regulated by N-methyl-D-aspartate receptor activation via the mammalian target of rapamycin/phosphatidylinositol 3-kinase signaling pathway.
- Channeling Local Translation
The synthesis of a potassium channel is decreased by neuronal activity near synapses of hippocampal cells, providing a local feedback circuit.Permalink: