Region-specific endodermal signals direct neural crest cells to form the three middle ear ossicles.
Animals
Bone Morphogenetic Proteins
/ metabolism
Cell Movement
Cell Survival
Ear Ossicles
/ embryology
Endoderm
/ embryology
Gene Deletion
Hedgehog Proteins
Incus
/ embryology
Malleus
/ embryology
Mice
Models, Biological
Neural Crest
/ cytology
Organ Specificity
Pharynx
/ embryology
Phenotype
Signal Transduction
Stapes
/ embryology
Time Factors
Transforming Growth Factor beta
/ metabolism
Bone morphogenetic protein 4
Conductive hearing loss
Endoderm
Middle ear
Mouse
Neural crest
Ossicles
Sonic hedgehog
Journal
Development (Cambridge, England)
ISSN: 1477-9129
Titre abrégé: Development
Pays: England
ID NLM: 8701744
Informations de publication
Date de publication:
22 01 2019
22 01 2019
Historique:
received:
22
05
2018
accepted:
24
12
2018
pubmed:
12
1
2019
medline:
10
9
2019
entrez:
12
1
2019
Statut:
epublish
Résumé
Defects in the middle ear ossicles - malleus, incus and stapes - can lead to conductive hearing loss. During development, neural crest cells (NCCs) migrate from the dorsal hindbrain to specific locations in pharyngeal arch (PA) 1 and 2, to form the malleus-incus and stapes, respectively. It is unclear how migratory NCCs reach their proper destination in the PA and initiate mesenchymal condensation to form specific ossicles. We show that secreted molecules sonic hedgehog (SHH) and bone morphogenetic protein 4 (BMP4) emanating from the pharyngeal endoderm are important in instructing region-specific NCC condensation to form malleus-incus and stapes, respectively, in mouse. Tissue-specific knockout of
Identifiants
pubmed: 30630826
pii: dev.167965
doi: 10.1242/dev.167965
pii:
doi:
Substances chimiques
Bone Morphogenetic Proteins
0
Hedgehog Proteins
0
Transforming Growth Factor beta
0
Types de publication
Journal Article
Research Support, Non-U.S. Gov't
Langues
eng
Sous-ensembles de citation
IM
Informations de copyright
© 2019. Published by The Company of Biologists Ltd.
Déclaration de conflit d'intérêts
Competing interestsThe authors declare no competing or financial interests.