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| Title: | ATP8B1 is essential for maintaining normal hearing. |
| Author(s): | Stapelbroek, J.M. Peters, T.A. (241688051) Beurden, D.H. van Curfs, J.H.A.J. (107877031) Joosten, A. Beynon, A.J. (114591229) Leeuwen, B.M. van Velden, L.M. van der Bull, L. Oude Elferink, R.P. Zanten, B.A. van Klomp, L.W. Houwen, R.H.J. |
| Publication year: | 2009 |
| Document type: | Article / Letter to editor |
| Journal: | Proceedings of the National Academy of Science of the United States of America |
| ISSN: | 0027-8424 |
| Volume: | vol. 106 |
| Issue: | iss. 24 |
| Start page: | p. 9709 |
| End page: | p. 9714 |
| Abstract: | ATP8B1 deficiency is caused by autosomal recessive mutations in ATP8B1, which encodes the putative phospatidylserine flippase ATP8B1 (formerly called FIC1). ATP8B1 deficiency is primarily characterized by cholestasis, but extrahepatic symptoms are also found. Because patients sometimes report reduced hearing capability, we investigated the role of ATP8B1 in auditory function. Here we show that ATP8B1/Atp8b1 deficiency, both in patients and in Atp8b1(G308V/G308V) mutant mice, causes hearing loss, associated with progressive degeneration of cochlear hair cells. Atp8b1 is specifically localized in the stereocilia of these hair cells. This indicates that the mechanosensory function and integrity of the cochlear hair cells is critically dependent on ATP8B1 activity, possibly through maintaining lipid asymmetry in the cellular membranes of stereocilia. |
| Subject: | DCN 2: Functional Neurogenomics NCMLS 3A: Genetics and epigenetic pathways of disease |
| Organization: | Central Animal Laboratory Otorhinolaryngology UMCN Extern |
| Appears in Collections: | Academic bibliography
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Please use this identifier to cite or link to this item:
http://hdl.handle.net/2066/79631
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