
Faculty, Staff and Student Publications
Publication Date
10-1-2022
Journal
Acta Neuropathologica
Abstract
In Alzheimer's disease (AD), where amyloid-β (Aβ) and tau deposits in the brain, hyperexcitation of neuronal networks is an underlying disease mechanism, but its cause remains unclear. Here, we used the Collaborative Cross (CC) forward genetics mouse platform to identify modifier genes of neuronal hyperexcitation. We found LAMP5 as a novel regulator of hyperexcitation in mice, critical for the survival of distinct interneuron populations. Interestingly, synaptic LAMP5 was lost in AD brains and LAMP5 interneurons degenerated in different AD mouse models. Genetic reduction of LAMP5 augmented functional deficits and neuronal network hypersynchronicity in both Aβ- and tau-driven AD mouse models. To this end, our work defines the first specific function of LAMP5 interneurons in neuronal network hyperexcitation in AD and dementia with tau pathology.
Keywords
Alzheimer’s disease, Amyloid-β, Tau, Hyperexcitation, Neuronal network, LAMP5
DOI
10.1007/s00401-022-02457-w
PMID
35780436
PMCID
PMC9467963
PubMedCentral® Posted Date
July 2022
PubMedCentral® Full Text Version
Post-print
Published Open-Access
yes

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