Epilepsy-Related Ligand/Receptor Complex LGI1 and ADAM22 Regulate Synaptic Transmission
Copyright policy )Epilepsy-Related Ligand/Receptor Complex LGI1 and ADAM22 Regulate Synaptic Transmission
Abnormally synchronized synaptic transmission in the brain causes epilepsy. Most inherited forms of epilepsy result from mutations in ion channels. However, one form of epilepsy, autosomal dominant partial epilepsy with auditory features (ADPEAF), is characterized by mutations in a secreted neuronal protein, LGI1. We show that ADAM22, a transmembrane protein that when mutated itself causes seizure, serves as a receptor for LGI1. LGI1 enhances AMPA receptor-mediated synaptic transmission in hippocampal slices. The mutated form of LGI1 fails to bind to ADAM22. ADAM22 is anchored to the postsynaptic density by cytoskeletal scaffolds containing stargazin. These studies in rat brain indicate possible avenues for understanding human epilepsy.
- University of California, San Francisco United States
- Eli Lilly (United States) United States
- Japan Science and Technology Agency Japan
- National Presto Industries United States
- National Center for Geriatrics and Gerontology Japan
Cerebral Cortex, N-Methylaspartate, Intracellular Signaling Peptides and Proteins, Membrane Proteins, Proteins, Nerve Tissue Proteins, Ligands, Hippocampus, Cell Line, Protein Structure, Tertiary, ADAM Proteins, Cerebellar Cortex, Mice, Animals, Humans, Intercellular Signaling Peptides and Proteins, Calcium Channels, Epilepsies, Partial, Disks Large Homolog 4 Protein, Protein Binding
Cerebral Cortex, N-Methylaspartate, Intracellular Signaling Peptides and Proteins, Membrane Proteins, Proteins, Nerve Tissue Proteins, Ligands, Hippocampus, Cell Line, Protein Structure, Tertiary, ADAM Proteins, Cerebellar Cortex, Mice, Animals, Humans, Intercellular Signaling Peptides and Proteins, Calcium Channels, Epilepsies, Partial, Disks Large Homolog 4 Protein, Protein Binding
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