Prestin’s fast motor kinetics is essential for mammalian cochlear amplification

Satoe Takahashi, Yingjie Zhou, Takashi Kojima, Mary Ann Cheatham, Kazuaki Homma*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review


Prestin (SLC26A5)-mediated voltage-driven elongations and contractions of sensory outer hair cells within the organ of Corti are essential for mammalian cochlear amplification. However, whether this electromotile activity directly contributes on a cycle-by-cycle basis is currently controversial. By restoring motor kinetics in a mouse model expressing a slowed prestin missense variant, this study provides experimental evidence acknowledging the importance of fast motor action to mammalian cochlear amplification. Our results also demonstrate that the point mutation in prestin disrupting anion transport in other proteins of the SLC26 family does not alter cochlear function, suggesting that the potential weak anion transport of prestin is not essential in the mammalian cochlea.

Original languageEnglish (US)
Article numbere2217891120
JournalProceedings of the National Academy of Sciences of the United States of America
Issue number11
StatePublished - Mar 10 2023


  • cochlear amplification
  • DFNB61
  • electromotility
  • prestin
  • SLC26A5

ASJC Scopus subject areas

  • General


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