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Therapeutic Potential of Wnt and Notch Signaling and Epigenetic Regulation in Mammalian Sensory Hair Cell Regeneration.
- Source :
-
Molecular therapy : the journal of the American Society of Gene Therapy [Mol Ther] 2019 May 08; Vol. 27 (5), pp. 904-911. Date of Electronic Publication: 2019 Mar 30. - Publication Year :
- 2019
-
Abstract
- Hearing loss is one of the most prevalent sensory deficits worldwide and can result from the death of mechanosensory hair cells that transduce auditory signals in the cochlea. The mammalian cochlea lacks the capacity to regenerate these hair cells once damaged, and currently there are no biological therapies for hearing loss. Understanding the signaling pathways responsible for hair cell development can inform regenerative strategies and identify targets for treating hearing loss. The canonical Wnt and Notch pathways are critical for cochlear development; they converge on several key molecules, such as Atoh1, to regulate prosensory specification, proliferation, hair cell differentiation, and cellular organization. Much work has focused on Wnt and Notch modulation in the neonatal mouse cochlea, where they can promote hair cell regeneration. However, this regenerative response is limited in the adult cochlea and this might be attributed to age-dependent epigenetic modifications. Indeed, the epigenetic status at key gene loci undergoes dynamic changes during cochlear development, maturation, and aging. Therefore, strategies to improve regenerative success in the adult cochlea might require the modulation of Wnt, Notch, or other pathways, as well as targeted epigenetic modifications to alter the activity of key genes critical for supporting cell proliferation or transdifferentiation.<br /> (Copyright © 2019 The American Society of Gene and Cell Therapy. Published by Elsevier Inc. All rights reserved.)
- Subjects :
- Animals
Cochlea pathology
Epigenesis, Genetic genetics
Hair Cells, Auditory pathology
Hearing Loss pathology
Hearing Loss therapy
Humans
Mechanoreceptors pathology
Mice
Sensation Disorders pathology
Sensation Disorders therapy
Hearing Loss genetics
Receptors, Notch genetics
Sensation Disorders genetics
Wnt Signaling Pathway genetics
Subjects
Details
- Language :
- English
- ISSN :
- 1525-0024
- Volume :
- 27
- Issue :
- 5
- Database :
- MEDLINE
- Journal :
- Molecular therapy : the journal of the American Society of Gene Therapy
- Publication Type :
- Academic Journal
- Accession number :
- 30982678
- Full Text :
- https://doi.org/10.1016/j.ymthe.2019.03.017