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Notch signaling and Atoh1 expression during hair cell regeneration in the mouse utricle.
Hear Res 2010; 267(1-2):61-70HR

Abstract

The mammalian vestibular epithelium has a limited capacity for spontaneous hair cell regeneration. The mechanism underlying the regeneration is not well understood. Because the Notch signaling pathway mediates the formation of the sensory epithelial mosaic patterning during ear development, it may also play a role in hair cell regeneration in the mature mammalian vestibular epithelium after a lesion. To investigate the process of spontaneous regeneration in the vestibular epithelium vis-à-vis changes in Notch signaling, we induced a unilateral lesion by infusing streptomycin into the mouse posterior semicircular canal, and examined Notch signaling molecules and their mRNA expression levels by immunohistochemistry and quantitative real-time polymerase chain reaction (qRTPCR), respectively. We detected Jagged1 in supporting cells in both normal and lesioned utricles. Atoh1, a marker for early developing hair cells, was absent in the intact mature tissue, but re-appeared after the lesion. Many cells were either positive for both Atoh1 and myosin VIIa, or for one of them. qRTPCR data showed a post trauma decrease of Hes5 and an increase in Atoh1. Atoh1 up-regulation may either be a result of Hes5 down-regulation or mediated by another signaling pathway.

Authors+Show Affiliations

Kresge Hearing Research Institute, Department of Otolaryngology, University of Michigan, Ann Arbor, MI 48109, USA.No affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article
Research Support, N.I.H., Extramural
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

20433915

Citation

Wang, Guo-Peng, et al. "Notch Signaling and Atoh1 Expression During Hair Cell Regeneration in the Mouse Utricle." Hearing Research, vol. 267, no. 1-2, 2010, pp. 61-70.
Wang GP, Chatterjee I, Batts SA, et al. Notch signaling and Atoh1 expression during hair cell regeneration in the mouse utricle. Hear Res. 2010;267(1-2):61-70.
Wang, G. P., Chatterjee, I., Batts, S. A., Wong, H. T., Gong, T. W., Gong, S. S., & Raphael, Y. (2010). Notch signaling and Atoh1 expression during hair cell regeneration in the mouse utricle. Hearing Research, 267(1-2), pp. 61-70. doi:10.1016/j.heares.2010.03.085.
Wang GP, et al. Notch Signaling and Atoh1 Expression During Hair Cell Regeneration in the Mouse Utricle. Hear Res. 2010;267(1-2):61-70. PubMed PMID: 20433915.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Notch signaling and Atoh1 expression during hair cell regeneration in the mouse utricle. AU - Wang,Guo-Peng, AU - Chatterjee,Ishani, AU - Batts,Shelley A, AU - Wong,Hiu Tung, AU - Gong,Tzy-Wen, AU - Gong,Shu-Sheng, AU - Raphael,Yehoash, Y1 - 2010/04/28/ PY - 2009/12/11/received PY - 2010/03/19/revised PY - 2010/03/20/accepted PY - 2010/5/4/entrez PY - 2010/5/4/pubmed PY - 2010/10/29/medline SP - 61 EP - 70 JF - Hearing research JO - Hear. Res. VL - 267 IS - 1-2 N2 - The mammalian vestibular epithelium has a limited capacity for spontaneous hair cell regeneration. The mechanism underlying the regeneration is not well understood. Because the Notch signaling pathway mediates the formation of the sensory epithelial mosaic patterning during ear development, it may also play a role in hair cell regeneration in the mature mammalian vestibular epithelium after a lesion. To investigate the process of spontaneous regeneration in the vestibular epithelium vis-à-vis changes in Notch signaling, we induced a unilateral lesion by infusing streptomycin into the mouse posterior semicircular canal, and examined Notch signaling molecules and their mRNA expression levels by immunohistochemistry and quantitative real-time polymerase chain reaction (qRTPCR), respectively. We detected Jagged1 in supporting cells in both normal and lesioned utricles. Atoh1, a marker for early developing hair cells, was absent in the intact mature tissue, but re-appeared after the lesion. Many cells were either positive for both Atoh1 and myosin VIIa, or for one of them. qRTPCR data showed a post trauma decrease of Hes5 and an increase in Atoh1. Atoh1 up-regulation may either be a result of Hes5 down-regulation or mediated by another signaling pathway. SN - 1878-5891 UR - https://www.unboundmedicine.com/medline/citation/20433915/Notch_signaling_and_Atoh1_expression_during_hair_cell_regeneration_in_the_mouse_utricle_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0378-5955(10)00199-1 DB - PRIME DP - Unbound Medicine ER -