Abstract:
:NMDA receptors (NMDARs) are critical for physiological synaptic plasticity, learning, and memory and for pathological plasticity and neuronal death. The GluN1 subunit is encoded by a single gene, GRIN1, with 8 splice variants, but whether the diversity generated by this splicing has physiological consequences remains enigmatic. Here, we generate mice lacking from the GluN1 exon 5-encoded N1 cassette (GluN1a mice) or compulsorily expressing this exon (GluN1b mice). Despite no differences in basal synaptic transmission, long-term potentiation in the hippocampus is significantly enhanced in GluN1a mice compared with that in GluN1b mice. Furthermore, GluN1a mice learn more quickly and have significantly better spatial memory performance than do GluN1b mice. In addition, in human iPSC-derived neurons in autism spectrum disorder NMDARs show characteristics of N1-lacking GluN1. Our findings indicate that alternative splicing of GluN1 is a mechanism for controlling physiological long-lasting synaptic potentiation, learning, and memory.
journal_name
Cell Repjournal_title
Cell reportsauthors
Sengar AS,Li H,Zhang W,Leung C,Ramani AK,Saw NM,Wang Y,Tu Y,Ross PJ,Scherer SW,Ellis J,Brudno M,Jia Z,Salter MWdoi
10.1016/j.celrep.2019.11.087subject
Has Abstractpub_date
2019-12-24 00:00:00pages
4285-4294.e5issue
13issn
2211-1247pii
S2211-1247(19)31585-2journal_volume
29pub_type
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