Transmembrane inner ear expressed protein (TMIE)

Transmembrane inner ear expressed protein (TMIE) is a small, evolutionarily conserved membrane protein with two transmembrane domains separated by an extracellular loop, located predominantly at the tips of stereocilia in cochlear hair cells[1][2][5]. TMIE serves as an essential auxiliary component of the mechanotransducer (MET) channel complex, which converts mechanical sound vibrations into electrical signals in the auditory system[2][5]. Mutations in the TMIE gene cause severe to profound congenital or prelingual non-syndromic sensorineural hearing loss in humans (DFNB6), and homologs in mice and zebrafish confirm its universal and vital role in hair cell function and auditory mechanotransduction[1][3][4]. TMIE is not a therapeutic receptor, enzyme, transporter, or ion channel itself, but it is critical for the function of these complexes in sensory hair cells, serving mainly as an accessory protein facilitating proper assembly, localization, or function of the MET channel[2][5]. No drugs currently target TMIE, so it is not considered a direct therapeutic target at this time.

Other names

TMIEDFNB6 proteinTransmembrane inner ear proteinTransmembrane inner ear expressed proteinTransmembrane inner ear

Currently, no drugs are known to target TMIE; therefore, mechanisms of action are not described.