Molecular biology of hearing

Stöver, Timo; Diensthuber, Marc

doi:10.3205/cto000079

Cited by 5 publications

(1 citation statement)

References 114 publications

(139 reference statements)

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“…A coiled organ, the cochlea, plays an essential role in hearing during this sequential process in the inner ear. In the cochlea, hair cells convert mechanosensory sound waves into neural electrical pulses, which are transmitted by the synapses between the hair cells and spiral ganglion neurons and eventually reach the brain's auditory cortex [ 1 , 2 ].…”

Section: Introductionmentioning

confidence: 99%

Early development of the cochlea of the common marmoset, a non-human primate model

et al. 2022

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Background Fine-tuned cochlear development is essential for hearing. Owing to the difficulty in using early human fetal samples, most of our knowledge regarding cochlear development has been obtained from rodents. However, several inter-species differences in cochlear development between rodents and humans have been reported. To bridge these differences, we investigated early otic development of a non-human primate model animal, the common marmoset (Callithrix jacchus). Methods We examined 20 genes involved in early cochlear development and described the critical developmental steps for morphogenesis, which have been reported to vary between rodents and marmosets. Results The results revealed that several critical genes involved in prosensory epithelium specifications showed higher inter-species differences, suggesting that the molecular process for hair cell lineage acquisition in primates differs considerably from that of rodents. We also observed that the tempo of cochlear development was three times slower in the primate than in rodents. Conclusions Our data provide new insights into early cochlear development in primates and humans and imply that the procedures used for manipulating rodent cochlear sensory cells cannot be directly used for the research of primate cells due to the intrinsic inter-species differences in the cell fate determination program.

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Section: Introductionmentioning

confidence: 99%