A Thalamic Orphan Receptor Drives Variability in Short-Term Memory.

A Thalamic Orphan Receptor Drives Variability in Short-Term Memory.
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DOI:
10.1016/j.cell.2020.09.011
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发表时间:
2020-10-15
期刊:
影响因子:
64.5
通讯作者:
Rajasethupathy P
Rajasethupathy P
中科院分区:
生物学1区
文献类型:
--
作者:
Hsiao K;Noble C;Pitman W;Yadav N;Kumar S;Keele GR;Terceros A;Kanke M;Conniff T;Cheleuitte-Nieves C;Tolwani R;Sethupathy P;Rajasethupathy P

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Working memory is a form of short-term memory that involves maintaining and updating task-relevant information toward goal-directed pursuits. Classical models posit persistent activity in prefrontal cortex (PFC) as a primary neural correlate, but emerging views suggest additional mechanisms may exist. We screened ~200 genetically diverse mice on a working memory task and identified a genetic locus on chromosome 5 that contributes to a substantial proportion (17%) of the phenotypic variance. Within the locus, we identified a gene encoding an orphan G-protein-coupled receptor, Gpr12, which is sufficient to drive substantial and bidirectional changes in working memory. Molecular, cellular, and imaging studies revealed that Gpr12 enables high thalamus-PFC synchrony to support memory maintenance and choice accuracy. These findings identify an orphan receptor as a potent modifier of short-term memory and supplement classical PFC-based models with an emerging thalamus-centric framework for the mechanistic understanding of working memory. A modifier of short-term memory, the orphan receptor Gpr12 is identified using genetic mapping in outbred mice and characterized to reveal that it enables thalamus-PFC synchrony to support memory maintenance and choice accuracy.
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