C-Ret-mediated hearing loss in mice with Hirschsprung disease

Nobutaka Ohgami, Michiru Ida-Eto, Takashi Shimotake, Naomi Sakashita, Michihiko Sone, Tsutomu Nakashima, Keiji Tabuchi, Tomofumi Hoshino, Atsuyoshi Shimada, Toyonori Tsuzuki, Masahiko Yamamoto, Gen Sobue, Mayumi Jijiwa, Naoya Asai, Akira Hara, Masahide Takahashi, Masashi Kato

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37 Citations (Scopus)

Abstract

A significantly increased risk for dominant sensorineural deafness in patients who have Hirschsprung disease (HSCR) caused by endothelin receptor type B and SOX10 has been reported. Despite the fact that c-RET is the most frequent causal gene of HSCR, it has not been determined whether impairments of c-Ret and c-RET cause congenital deafness in mice and humans. Here, we show that impaired phosphorylation of c-Ret at tyrosine 1062 causes HSCR-linked syndromic congenital deafness in c-Ret knockin (KI) mice. The deafness involves neurodegeneration of spiral ganglion neurons (SGNs) with not only impaired phosphorylation of Akt and NF-κB but decreased expression of calbindin D28k in inner ears. The congenital deafness involving neurodegeneration of SGNs in c-Ret KI mice was rescued by introducing constitutively activated RET. Taken together with our results for three patients with congenital deafness with c-RET-mediated severe HSCR, our results indicate that c-Ret and c-RET are a deafness-related molecule in mice and humans.

Original languageEnglish
Pages (from-to)13051-13056
Number of pages6
JournalProceedings of the National Academy of Sciences of the United States of America
Volume107
Issue number29
DOIs
Publication statusPublished - 20-07-2010

All Science Journal Classification (ASJC) codes

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    Ohgami, N., Ida-Eto, M., Shimotake, T., Sakashita, N., Sone, M., Nakashima, T., Tabuchi, K., Hoshino, T., Shimada, A., Tsuzuki, T., Yamamoto, M., Sobue, G., Jijiwa, M., Asai, N., Hara, A., Takahashi, M., & Kato, M. (2010). C-Ret-mediated hearing loss in mice with Hirschsprung disease. Proceedings of the National Academy of Sciences of the United States of America, 107(29), 13051-13056. https://doi.org/10.1073/pnas.1004520107