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  • Title: Hearing crosstalk: the molecular conversation orchestrating inner ear dorsoventral patterning.
    Author: Ohta S, Schoenwolf GC.
    Journal: Wiley Interdiscip Rev Dev Biol; 2018 Jan; 7(1):. PubMed ID: 29024472.
    Abstract:
    The inner ear is a structurally and functionally complex organ that functions in balance and hearing. It originates during neurulation as a localized thickened region of rostral ectoderm termed the otic placode, which lies adjacent to the developing caudal hindbrain. Shortly after the otic placode forms, it invaginates to delineate the otic cup, which quickly pinches off of the surface ectoderm to form a hollow spherical vesicle called the otocyst; the latter gives rise dorsally to inner ear vestibular components and ventrally to its auditory component. Morphogenesis of the otocyst is regulated by secreted proteins, such as WNTs, BMPs, and SHH, which determine its dorsoventral polarity to define vestibular and cochlear structures and sensory and nonsensory cell fates. In this review, we focus on the crosstalk that occurs among three families of secreted molecules to progressively polarize and pattern the developing otocyst. WIREs Dev Biol 2018, 7:e302. doi: 10.1002/wdev.302 This article is categorized under: Establishment of Spatial and Temporal Patterns > Gradients Signaling Pathways > Cell Fate Signaling Vertebrate Organogenesis > From a Tubular Primordium: Non-Branched.
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