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Hulander, M.* ; Wurst, W.* ; Carlsson, P.* ; Enerbäck, S.*

The winged helix transcription factor Fkh10 is required for normal development of the inner ear.

Nat. Genet. 20, 374-376 (1998)
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Fkhl0 is a member of the forkhead family of winged helix transcriptional regulators. Genes encoding forkhead proteins are instrumental during embryogenesis in mammals, in particular during development of the nervous system. Here we report that mice with a targeted disruption of the Fkh10 locus exhibit circling behaviour, poor swimming ability and abnormal reaching response-all common findings in mice with vestibular dysfunction. These animals also fail to elicit a Preyer reflex in response to a suprathreshold auditory stimulation, as seen in mice with profound hearing impairment. Histological examination of the inner ear reveals a gross structural malformation of the vestibulum as well as the cochlea. These structures have been replaced by a single irregular cavity in which neither proper semicircular ducts nor cochlea can be identified. We also show that at 9.5 days post coitum (dpc), Fkh10 is exclusively expressed in the otic vesicle. These findings implicate Fkh10 as an early regulator necessary for development of both cochlea and vestibulum and identify its human homologue FKHL10 as a previously unknown candidate deafness gene at 5q34.
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Publikationstyp Artikel: Journalartikel
Dokumenttyp Wissenschaftlicher Artikel
ISSN (print) / ISBN 1061-4036
e-ISSN 1546-1718
Zeitschrift Nature Genetics
Quellenangaben Band: 20, Heft: 4, Seiten: 374-376 Artikelnummer: , Supplement: ,
Verlag Nature Publishing Group
Verlagsort New York, NY
Begutachtungsstatus Peer reviewed