Planar cell polarity defects and hearing loss in sperm-associated antigen 6 (Spag6)-deficient mice.
Am J Physiol Cell Physiol
; 320(1): C132-C141, 2021 01 01.
Article
em En
| MEDLINE
| ID: mdl-33175573
ABSTRACT
Spag6 encodes an axoneme central apparatus protein that is required for normal flagellar and cilia motility. Recent findings suggest that Spag6 also plays a role in ciliogenesis, orientation of cilia basal feet, and planar polarity. Sensory cells of the inner ear display unique structural features that underlie their mechanosensitivity. They represent a distinctive form of cellular polarity, known as planar cell polarity (PCP). However, a role for Spag6 in the inner ear has not yet been explored. In the present study, the function of Spag6 in the inner ear was examined using Spag6-deficient mice. Our results demonstrate hearing loss in the Spag6 mutants, associated with abnormalities in cellular patterning, cell shape, stereocilia bundles, and basal bodies, as well as abnormally distributed Frizzled class receptor 6 (FZD6), suggesting that Spag6 participates in PCP regulation. Moreover, we found that the subapical microtubule meshwork was disrupted. Our observations suggest new functions for Spag6 in hearing and PCP in the inner ear.
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MEDLINE
Assunto principal:
Polaridade Celular
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Células Ciliadas Auditivas Internas
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Audição
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Perda Auditiva
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Proteínas dos Microtúbulos
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Microtúbulos
Idioma:
En
Ano de publicação:
2021
Tipo de documento:
Article