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lüll Notch signaling and the emergence of auditory hair cells Weir J; Rivolta MN; Holley MCArch Otolaryngol Head Neck Surg 2000[Oct]; 126 (10): 1244-8OBJECTIVE: Recent insights into the mechanisms that determine a hair cell's fate have emerged from studies on invertebrate sensory organs and the avian inner ear. These mechanisms have important implications for our understanding of the possible therapeutic management of sensorineural deafness. This article reviews the current state of our knowledge regarding mammalian auditory hair cell fate specification. DESIGN: Data were obtained from the MEDLINE database and data presented at the Molecular Biology of Hearing and Deafness Meeting (Bethesda, Md, October 1998). Articles reporting information about cell fate specification and Notch and its ligands were selected. MAIN OUTCOME MEASURES: Data pertaining to cell fate mechanisms, Notch and its ligands, and application to hearing were extracted. RESULTS: The Notch/ligand mechanism is responsible for the specification of the hair cell phenotype. CONCLUSIONS: Major progress has been made in understanding this fundamental process, and its application to hair cell determination is only now being realized. Possible applications could involve the "switching" of supporting cells to hair cells, thus replenishing those hair cells damaged in sensorineural hearing loss.|Hair Cells, Auditory/*physiology[MESH]|Humans[MESH]|Neural Inhibition/physiology[MESH]|Signal Transduction[MESH] |