Abstract：
:Long-lasting forms of synaptic plasticity such as synaptic scaling are critically dependent on transcription. Activity-dependent transcriptional dynamics in neurons, however, remain incompletely characterized because most previous efforts relied on measurement of steady-state mRNAs. Here, we use nascent RNA sequencing to profile transcriptional dynamics of primary neuron cultures undergoing network activity shifts. We find pervasive transcriptional changes, in which ∼45% of expressed genes respond to network activity shifts. We further link retinoic acid-induced 1 (RAI1), the Smith-Magenis syndrome gene, to the transcriptional program driven by reduced network activity. Remarkable agreement among nascent transcriptomes, dynamic chromatin occupancy of RAI1, and electrophysiological properties of Rai1-deficient neurons demonstrates the essential roles of RAI1 in suppressing synaptic upscaling in the naive network, while promoting upscaling triggered by activity silencing. These results highlight the utility of bona fide transcription profiling to discover mechanisms of activity-dependent chromatin remodeling that underlie normal and pathological synaptic plasticity.
journal_name
Cell Repjournal_title
Cell reportsauthors
Garay PM,Chen A,Tsukahara T,Rodríguez Díaz JC,Kohen R,Althaus JC,Wallner MA,Giger RJ,Jones KS,Sutton MA,Iwase Sdoi
10.1016/j.celrep.2020.108002subject
Has Abstractpub_date
2020-08-11 00:00:00pages
108002issue
6issn
2211-1247pii
S2211-1247(20)30987-6journal_volume
32pub_type
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