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The Piezo channel is a mechano-sensitive complex component in the mammalian inner ear hair cell
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The Piezo channel is a mechano-sensitive complex component in the mammalian inner ear hair cell
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Journal Article
The Piezo channel is a mechano-sensitive complex component in the mammalian inner ear hair cell
2024
Overview
The inner ear is the hub where hair cells (HCs) transduce sound, gravity, and head acceleration stimuli to the brain. Hearing and balance rely on mechanosensation, the fastest sensory signals transmitted to the brain. The mechanoelectrical transducer (MET) channel is the entryway for the sound-balance-brain interface, but the channel-complex composition is not entirely known. Here, we report that the mouse utilizes Piezo1 (Pz1) and Piezo2 (Pz2) isoforms as MET-complex components. The Pz channels, expressed in HC stereocilia, and cell lines are co-localized and co-assembled with MET complex partners. Mice expressing non-functional
Pz1
and
Pz2
at the ROSA26 locus have impaired auditory and vestibular traits that can only be explained if the Pzs are integral to the MET complex. We suggest that Pz subunits constitute part of the MET complex and that interactions with other MET complex components yield functional MET units to generate HC MET currents.
The identity of hair cells’ mechanoelectrical transduction (MET) channel-complex components is unknown. Here, the authors used multiple biochemical, genetic, and functional approaches to show that mouse hair cells utilize Piezo1 and Piezo2 isoforms as part of the MET-complex component.
Publisher
Nature Publishing Group UK,Nature Publishing Group,Nature Portfolio
Subject
/ 13/1
/ 14
/ 14/19
/ 14/28
/ 82/1
/ 9/74
/ 9/97
/ Animals
/ Balance
/ Brain
/ Hair
/ Hair Cells, Auditory - metabolism
/ Hair Cells, Auditory, Inner - metabolism
/ Hearing
/ Humanities and Social Sciences
/ Isoforms
/ Mechanotransduction, Cellular
/ Mice
/ Science
