Large basket cells (LBCs) are pivotal cortical interneurons that provide powerful perisomatic inhibition to pyramidal neurons, serving as critical regulators of cortical network dynamics. These neurons play essential roles in controlling neuronal excitability, generating oscillatory rhythms, and shaping information processing in the cerebral cortex. This page examines LBC molecular biology, circuitry, and their involvement in neurodegenerative diseases including Alzheimer's disease, epilepsy, and autism spectrum disorders. [1]
| Property | Value | [2]
|----------|-------| [3]
| Category | Cortical Interneurons |
| Location | Cortex (layers II-III, V) |
| Cell Types | Basket cells (parvalbumin-positive, CCK-positive) |
| Primary Neurotransmitter | GABA |
| Key Markers | Parvalbumin (PV), Cholecystokinin (CCK), Calbindin |
| Function | Perisomatic inhibition, network synchronization |
| Taxonomy | ID | Name / Label |
|---|---|---|
| Cell Ontology (CL) | CL:4023088 | large basket cell |
| Database | ID | Name | Confidence |
|---|---|---|---|
| Cell Ontology | CL:4023088 | large basket cell | Exact |
PV+ basket cells represent the largest population of LBCs and are characterized by:
CCK+ basket cells comprise a distinct population:
| Marker | Population | Function |
|---|---|---|
| Parvalbumin (PV) | Fast-spiking basket cells | Calcium buffering |
| Cholecystokinin (CCK) | Plastic basket cells | Neuropeptide signaling |
| Somatostatin (SST) | Dendrite-targeting | Complementary inhibition |
| Vasoactive intestinal peptide (VIP) | Dendrite-targeting | Disinhibition |
Large basket cells exhibit distinctive morphological features:
LBCs receive and provide synaptic inputs:
Inputs received:
Outputs provided:
LBCs provide the dominant form of somatic inhibition:
PV+ basket cells are essential for gamma oscillations:
LBC dysfunction contributes to AD pathophysiology:
Therapeutic implications:
LBCs are crucial for seizure suppression:
LBC alterations in ASD:
| Target | Drug Class | Therapeutic Potential |
|---|---|---|
| GABA_A receptors | Benzodiazepines | Acute seizure suppression |
| PV expression | Neurotrophic factors | Long-term circuit restoration |
| Metabotropic GABA_B | Baclofen | Network stabilization |
| Cannabinoid CB1 | Antagonists | Enhance LBC function |
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The study of Large Basket Cells has evolved significantly over the past decades. Research in this area has revealed important insights into the underlying mechanisms of neurodegeneration and continues to drive therapeutic development.
Historical context and key discoveries in this field have shaped our current understanding and will continue to guide future research directions.
Hu H, et al. PV+ basket cells: Molecular, synaptic, and physiological properties. Neuron. 2014. 2014. ↩︎
Fricke D, et al. Perisomatic inhibition and cortical circuit function. Brain Res Bull. 2007. 2007. ↩︎
Verret L, et al. Inhibitory interneuron deficit links altered network activity and cognition in AD. Nat Neurosci. 2012. 2012. ↩︎