A deafened adult cannot recover the ability to hear, because the sensory hearing cells of the inner ear don't regenerate after damage. In two new studies, partially funded by the National Institutes of Health and published in the Proceedings of the National Academy of the Sciences (PNAS), USC Stem Cell scientists explain why this is the case and how we might be able to change it. "In the non-sensory supporting cells of the inner ear, key genes required for conversion to sensory cells are shut off through a process known as 'epigenetic silencing.

https://www.miragenews.com/usc-stem-cell-research-targets-hearing-1065292/

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