Cadherin 23 Is a component of the tip link in hair-cell stereocilla

Jan Siemens, Concepcion Lillo, Rachel A. Dumont, Anna Reynolds, David S. Williams, Peter Barr-Gillespie, Ulrich Müller

Research output: Contribution to journalArticle

303 Citations (Scopus)

Abstract

Mechanoelectrical transduction, the conversion of mechanical force into electrochemical signals, underlies a range of sensory phenomena, including touch, hearing and balance. Hair cells of the vertebrate inner ear are specialized mechanosensors that transduce mechanical forces arising from sound waves and head movement to provide our senses of hearing and balance; however, the mechanotransduction channel of hair cells and the molecules that regulate channel activity have remained elusive. One molecule that might participate in mechanoelectrical transduction is cadherin 23 (CDH23), as mutations in its gene cause deafness and age-related hearing loss. Furthermore, CDH23 is large enough to be the tip link, the extracellular filament proposed to gate the mechanotransduction channel. Here we show that antibodies against CDH23 label the tip link, and that CDH23 has biochemical properties similar to those of the tip link. Moreover, CDH23 forms a complex with myosin-1c, the only known component of the mechanotransduction apparatus, suggesting that CDH23 and myosin-1c cooperate to regulate the activity of mechanically gated ion channels in hair cells.

Original languageEnglish (US)
Pages (from-to)950-955
Number of pages6
JournalNature
Volume428
Issue number6986
DOIs
StatePublished - Apr 29 2004

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Cadherins
Myosins
Hearing
Head Movements
Touch
Deafness
Inner Ear
Ion Channels
Hearing Loss
Vertebrates
Mutation
Antibodies
Genes

ASJC Scopus subject areas

  • General

Cite this

Siemens, J., Lillo, C., Dumont, R. A., Reynolds, A., Williams, D. S., Barr-Gillespie, P., & Müller, U. (2004). Cadherin 23 Is a component of the tip link in hair-cell stereocilla. Nature, 428(6986), 950-955. https://doi.org/10.1038/nature02483

Cadherin 23 Is a component of the tip link in hair-cell stereocilla. / Siemens, Jan; Lillo, Concepcion; Dumont, Rachel A.; Reynolds, Anna; Williams, David S.; Barr-Gillespie, Peter; Müller, Ulrich.

In: Nature, Vol. 428, No. 6986, 29.04.2004, p. 950-955.

Research output: Contribution to journalArticle

Siemens, J, Lillo, C, Dumont, RA, Reynolds, A, Williams, DS, Barr-Gillespie, P & Müller, U 2004, 'Cadherin 23 Is a component of the tip link in hair-cell stereocilla', Nature, vol. 428, no. 6986, pp. 950-955. https://doi.org/10.1038/nature02483
Siemens J, Lillo C, Dumont RA, Reynolds A, Williams DS, Barr-Gillespie P et al. Cadherin 23 Is a component of the tip link in hair-cell stereocilla. Nature. 2004 Apr 29;428(6986):950-955. https://doi.org/10.1038/nature02483
Siemens, Jan ; Lillo, Concepcion ; Dumont, Rachel A. ; Reynolds, Anna ; Williams, David S. ; Barr-Gillespie, Peter ; Müller, Ulrich. / Cadherin 23 Is a component of the tip link in hair-cell stereocilla. In: Nature. 2004 ; Vol. 428, No. 6986. pp. 950-955.
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