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Inner Ear Cells from Stem Cells: A Path Towards Inner Ear Cell Regeneration

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Hair Cell Regeneration

Part of the book series: Springer Handbook of Auditory Research ((SHAR,volume 75))

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Abstract

Investigating the mammalian inner ear’s sensory epithelia has been limited by the lack of accessibility, being embedded in dense bone, and further confounded by the paucity and survivability of cells after dissection. These limitations hamper the use of inner ear cells for the development of therapies aimed at regeneration and for clinically relevant, high-throughput, in vitro drug screens. In this chapter, we describe different guidance strategies to generate inner ear cells from pluripotent stem cells. We explore the challenges of producing cells with proper lineage outcomes – from first stabilizing epithelial character in otic progenitors to unresolved questions such as ensuring that differentiated cell types have a correct vestibular or cochlear identity. We then discuss somatic stem and progenitor cells that are present in non-mammalian vertebrate inner ears, but also detectable in the adult mammalian vestibular organs, as well as in the neonate rodent cochlea. Extracting knowledge from these naturally proliferative cell populations will lead us closer to the possibility of reawakening regenerative potential in the mammalian adult inner ear. Finally, we describe how technology has changed during the last two decades and how manipulation of epigenetic DNA modifications and reprogramming strategies could revolutionize the treatment of hearing loss through hair cell regeneration.

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Correspondence to Stefan Heller .

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Janesick, A., Hashino, E., Heller, S. (2023). Inner Ear Cells from Stem Cells: A Path Towards Inner Ear Cell Regeneration. In: Warchol, M.E., Stone, J.S., Coffin, A.B., Popper, A.N., Fay, R.R. (eds) Hair Cell Regeneration. Springer Handbook of Auditory Research, vol 75. Springer, Cham. https://doi.org/10.1007/978-3-031-20661-0_6

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