A potassium channel agonist protects hearing function and promotes outer hair cell survival in a mouse model for age-related hearing loss.
Journal
Cell death & disease
ISSN: 2041-4889
Titre abrégé: Cell Death Dis
Pays: England
ID NLM: 101524092
Informations de publication
Date de publication:
11 07 2022
11 07 2022
Historique:
received:
07
02
2022
accepted:
04
05
2022
revised:
29
04
2022
entrez:
11
7
2022
pubmed:
12
7
2022
medline:
14
7
2022
Statut:
epublish
Résumé
Age-related hearing loss (ARHL) is the most common sensory impairment mainly caused by degeneration of sensory hair cells in the cochlea with no causal medical treatment available. Auditory function and sensory hair cell survival critically depend on the Kv7.4 (KCNQ4) channel, a voltage-gated potassium channel expressed in outer hair cells (OHCs), with its impaired function or reduced activity previously associated with ARHL. Here, we investigated the effect of a potent small-molecule Kv7.4 agonist on ARHL in the senescence-accelerated mouse prone 8 (SAMP8) model. For the first time in vivo, we show that Kv7.4 activation can significantly reduce age-related threshold shifts of auditory brainstem responses as well as OHC loss in the SAMP8 model. Pharmacological activation of Kv7.4 thus holds great potential as a therapeutic approach for ARHL as well as other hearing impairments related to Kv7.4 function.
Identifiants
pubmed: 35817766
doi: 10.1038/s41419-022-04915-5
pii: 10.1038/s41419-022-04915-5
pmc: PMC9273644
doi:
Substances chimiques
Potassium Channels
0
Types de publication
Journal Article
Research Support, Non-U.S. Gov't
Langues
eng
Sous-ensembles de citation
IM
Pagination
595Informations de copyright
© 2022. The Author(s).
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