Macromolecular transport in synapse to nucleus communication
Nicolas Panayotis1, Anna Karpova2, Michael R Kreutz2
1Department of Biological Chemistry, Weizmann Institute of Science, Rehovot 76100, Israel.
Trends in Neurosciences
|December 24, 2014
Summary
Neurons communicate signals from synapses to the nucleus using molecular motors and post-translational modifications. This process is crucial for transcriptional responses and synaptic plasticity.
Area of Science:
- Neuroscience
- Cell Biology
- Molecular Biology
Background:
- Neuronal processes require communication from synapses/axon terminals to the nucleus for transcriptional responses.
- The length of neuronal processes presents a challenge for intracellular communication.
- Existing mechanisms include rapid calcium waves and slower macromolecular signaling complexes.
Purpose of the Study:
- To summarize recent findings on macromolecular signaling from synapse to nucleus.
- To compare these mechanisms with those in axonal injury signaling.
- To identify common themes in neuronal signaling pathways.
Main Methods:
- Literature review and synthesis of recent findings.
- Comparative analysis of signaling mechanisms.
- Identification of conserved molecular players and processes.
Main Results:
- Macromolecular signaling complexes are transported by molecular motors.
- Combinatorial signal encoding occurs via post-translational modifications like phosphorylation and proteolysis.
- Importins play conserved roles in coordinating signaling complexes.
- Neurons integrate ionic flux with motor-transported signals.
Conclusions:
- Neurons utilize diverse mechanisms for long-distance intracellular communication.
- Post-translational modifications and importins are key in signal processing.
- Integration of ionic and motor-transported signals may form a temporal code for synaptic plasticity.
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