Abstract:
:Long-term information storage in the brain requires continual modification of the neuronal transcriptome. Synaptic inputs located hundreds of micrometers from the nucleus can regulate gene transcription, requiring high-fidelity, long-range signaling from synapses in dendrites to the nucleus in the cell soma. Here, we describe a synapse-to-nucleus signaling mechanism for the activity-dependent transcription factor NFAT. NMDA receptors activated on distal dendrites were found to initiate L-type Ca2+ channel (LTCC) spikes that quickly propagated the length of the dendrite to the soma. Surprisingly, LTCC propagation did not require voltage-gated Na+ channels or back-propagating action potentials. NFAT nuclear recruitment and transcriptional activation only occurred when LTCC spikes invaded the somatic compartment, and the degree of NFAT activation correlated with the number of somatic LTCC Ca2+ spikes. Together, these data support a model for synapse to nucleus communication where NFAT integrates somatic LTCC Ca2+ spikes to alter transcription during periods of heightened neuronal activity.
journal_name
Cell Repjournal_title
Cell reportsauthors
Wild AR,Sinnen BL,Dittmer PJ,Kennedy MJ,Sather WA,Dell'Acqua MLdoi
10.1016/j.celrep.2019.03.005subject
Has Abstractpub_date
2019-03-26 00:00:00pages
3537-3550.e4issue
13issn
2211-1247pii
S2211-1247(19)30312-2journal_volume
26pub_type
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