Neurology · Psychiatry ·
GluD1 supports GluN2B receptor function and memory in hippocampal circuits
In neuronal and mouse experiments, researchers found that loss of GluD1 reduced GluN2B-containing NMDA receptor responses and impaired synaptic plasticity. Region-specific GluD1 deficiency in the ventral subiculum also disrupted long-term contextual memory.
- GluD1 knockout selectively reduced GluN2B-mediated responses.
- Long-term potentiation was impaired at ventral CA1-to-subiculum synapses.
- Ventral subiculum GluD1 deficiency disrupted contextual memory.
GluD1 and NMDA receptors have both been implicated in neuropsychiatric disorders, but how GluD1 affects specific NMDA receptor subtypes has been unclear. Researchers used CRISPR/Cas9 to remove GluD1 from cultured hippocampal neurons, examined acute hippocampal slices, and tested the effects of region-specific GluD1 deficiency in vivo.
GluD1 knockout selectively reduced responses mediated by GluN2B-containing NMDA receptors in cultured neurons. In slices, knockout also reduced these currents at ventral CA1-to-subiculum synapses and impaired long-term potentiation. In vivo, GluD1 deficiency in the ventral subiculum disrupted long-term contextual memory.
The findings identify a role for GluD1 in maintaining GluN2B receptor function, synaptic plasticity, and memory in the models studied. They provide mechanistic insight relevant to disorders involving synaptic dysfunction, but do not establish a treatment or clinical implication; the reported work is experimental rather than evidence from patients.
Is this summary clinically accurate?
Help fellow clinicians: your rating sends inaccurate summaries straight to our editors.
Sign in to rate this summary →Source
Molecular Psychiatry: GluD1 modulates GluN2B-containing NMDAR function and plasticity at subicular synapses ↗This is an automated AI-condensed summary that has not yet been reviewed by an editor. Always consult the full item at the original source.