Uncovering the Secreted Signals and Transcription Factors Regulating the Development of Mammalian Middle Ear Ossicles
Overview
Affiliations
The mammalian middle ear comprises a chain of ossicles, the malleus, incus, and stapes that act as an impedance matching device during the transmission of sound from the tympanic membrane to the inner ear. These ossicles are derived from cranial neural crest cells that undergo endochondral ossification and subsequently differentiate into their final functional forms. Defects that occur during middle ear development can result in conductive hearing loss. In this review, we summarize studies describing the crucial roles played by signaling molecules such as sonic hedgehog, bone morphogenetic proteins, fibroblast growth factors, notch ligands, and chemokines during the differentiation of neural crest into the middle ear ossicles. In addition to these cell-extrinsic signals, we also discuss studies on the function of transcription factor genes such as Foxi3, Tbx1, Bapx1, Pou3f4, and Gsc in regulating the development and morphology of the middle ear ossicles.
Werneburg I, Bronzati M J Anat. 2024; 246(3):402-414.
PMID: 39297283 PMC: 11828744. DOI: 10.1111/joa.14105.
Comparison of Tissue Factors in the Ontogenetic Aspects of Human Cholesteatoma.
Dambergs K, Sumeraga G, Pilmane M Diagnostics (Basel). 2024; 14(6).
PMID: 38535082 PMC: 10969033. DOI: 10.3390/diagnostics14060662.
Morphopathogenesis of Adult Acquired Cholesteatoma.
Dambergs K, Sumeraga G, Pilmane M Medicina (Kaunas). 2023; 59(2).
PMID: 36837507 PMC: 9960810. DOI: 10.3390/medicina59020306.
Mutation of Results in Reduced Cartilage Markers in a Zebrafish Model of Otosclerosis.
Hawkey-Noble A, Pater J, Kollipara R, Fitzgerald M, Maekawa A, Kovacs C Genes (Basel). 2022; 13(7).
PMID: 35885890 PMC: 9319681. DOI: 10.3390/genes13071107.
Vestibular Deficits in Deafness: Clinical Presentation, Animal Modeling, and Treatment Solutions.
Maudoux A, Vitry S, El-Amraoui A Front Neurol. 2022; 13:816534.
PMID: 35444606 PMC: 9013928. DOI: 10.3389/fneur.2022.816534.