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Kölliker's organ-supporting cells and cochlear auditory development
Jianyong Chen1,2,3, Dekun Gao1,2,3, Lianhua Sun1,2,3
1Department of Otorhinolaryngology-Head and Neck Surgery, Xinhua Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China.
Frontiers in Molecular Neuroscience
|October 28, 2022
Summary
Kölliker's organ supports auditory development by transmitting crucial information to hair cells. Its degeneration is vital for cochlear maturation and hearing acquisition in mammals.
Area of Science:
- Developmental biology
- Neuroscience
- Otolaryngology
Background:
- Kölliker's organ is a transient structure in mammalian cochlear development.
- Its supporting cells are crucial for auditory development and synapse formation.
- Mammalian Kölliker's organ degeneration differs from humans, where it disappears at birth.
Purpose of the Study:
- To review the morphology, function, and degeneration of Kölliker's organ.
- To explore potential trans-differentiation of cochlear hair cells.
- To discuss molecular mechanisms and future research directions.
Main Methods:
- Review of existing literature on Kölliker's organ.
- Analysis of morphological and functional data during auditory development.
- Investigation of cellular signaling pathways involved in cochlear maturation.
Main Results:
- Kölliker's organ supports hair cell development and afferent nerve fiber excitation.
- ATP release from supporting cells influences intracellular Ca2+ in inner hair cells.
- Glutamate release, triggered by Ca2+, excites afferent nerve fibers, aiding auditory pathway development.
Conclusions:
- Kölliker's organ plays a critical role in transmitting developmental information to hair cells.
- Its degeneration is essential for cochlear maturation and auditory acquisition.
- Understanding these mechanisms offers insights into congenital hearing loss and auditory development.
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