Dentate Gyrus Mossy Cells are excitatory hilar neurons that constitute a critical component of the hippocampal formation, playing essential roles in memory processing, pattern separation, and circuit modulation. These neurons represent a uniquely vulnerable cell population in several neurodegenerative and epileptic conditions, making them important therapeutic targets. [1]
| Property | Value | [2]
|----------|-------| [3]
| Category | Hippocampal Excitatory Neuron | [4]
| Location | Dentate gyrus hilus (CA4 region) | [5]
| Cell Types | Glutamatergic mossy cells | [6]
| Primary Neurotransmitter | Glutamate | [7]
| Key Markers | vGluT1, Calretinin, NPY, Zn²⁺ | [8]
| Morphology | Large cell bodies with dense mossy fiber projections |
| Taxonomy | ID | Name / Label |
|---|---|---|
| Cell Ontology (CL) | CL:4023062 | dentate gyrus neuron |
Mossy cells are among the most excitatory neurons in the hippocampal formation and serve multiple critical functions:
Mossy cells are fundamental to the dentate gyrus's role in pattern separation—the ability to distinguish between similar memories. Their sparse but powerful excitatory output to granule cell dendrites enhances the discriminative capacity of the hippocampal circuit 1.
Mossy cells participate in both feedback and feedforward excitation:
Mossy cells are exceptionally vulnerable to seizure-induced damage:
T-type calcium channel modulators: Control burst firing
AMPA receptor antagonists: Reduce excitotoxicity
GABAergic agents: Restore inhibition balance
Dentate Gyrus Granule Cells
Epilepsy
Memory Circuits
Pattern Separation
The study of Dentate Gyrus Mossy 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.
Scharfman HE. The dentate gyrus mossy cell: functional diversity and plasticity. Prog Brain Res. 2007;163:633-658. 2007. ↩︎
Bui AD, et al. Dentate gyrus mossy cells in temporal lobe epilepsy: properties, dysfunctions, and therapeutic prospects. Brain. 2018;141(10):2872-2894. 2018. ↩︎
Zhang W, et al. Mossy cell degeneration and antiepileptic drug development. Neuropharmacology. 2020;168:107761. 2020. ↩︎
Jinde S, et al. Hilar mossy cell degeneration in a mouse model of temporal lobe epilepsy. J Neurosci. 2012;32(40):13886-13897. 2012. ↩︎
Ratzliff AD, et al. Mossy cells in epilepsy: the ghost in the machine. Epilepsy Curr. 2004;4(6):218-223. 2004. ↩︎
Freund TF, Buzsáki G. Interneurons of the hippocampus. Hippocampus. 1996;6(4):347-470. 1996. ↩︎
Amaral DG, et al. The dentate gyrus: a comprehensive guide to structure, function, and clinical implications. Prog Brain Res. 2007;163:1-798. 2007. ↩︎
Scharfman HE, Myers CE. Hilar mossy cells of the dentate gyrus: a historical perspective. Neural Plast. 2012;2012:196347. 2012. ↩︎