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Updated: Jun 6, 2026
Dissection of the Auditory Bulla in Postnatal Mice: Isolation of the Middle Ear Bones and Histological Analysis
Published on: January 4, 2017
Unraveling the genetics of otitis media: from mouse to human and back again
Marie S Rye1, Mahmood F Bhutta, Michael T Cheeseman
1Telethon Institute for Child Health Research, Centre for Child Health Research, The University of Western Australia, Subiaco, WA 6008, Australia.
Insights
Mouse models are crucial for identifying genes linked to otitis media (OM), a common childhood ear infection. Studying these models helps uncover genetic factors contributing to OM susceptibility in humans.
Area of Science:
- Genetics
- Otolaryngology
- Immunology
Background:
- Otitis media (OM) is a frequent childhood illness causing middle ear inflammation.
- High heritability (40-70%) suggests a strong genetic component to OM susceptibility.
- Most genes contributing to OM risk remain unidentified.
Purpose of the Study:
- To identify genes and pathways involved in otitis media susceptibility.
- To leverage mouse models for understanding human OM genetics.
- To facilitate the development of preventative and therapeutic strategies for OM.
Main Methods:
- Analysis of single-gene mouse mutants with otitis media phenotypes.
- Comparison of mouse gene candidates with human genetic associations.
- Utilizing mouse mutant biobanks for functional studies.
Main Results:
- Identified candidate genes in mouse models include Eya4, Tlr4, p73, MyD88, Fas, E2f4, Plg, Fbxo11, and Evi1.
- Reported associations between human OM and polymorphisms in FBXO11, TLR4, and PAI1.
- Linked TP73 to chronic rhinosinusitis, suggesting broader relevance.
Conclusions:
- The mouse-to-human approach is effective for identifying OM susceptibility genes.
- Mouse models are valuable resources for OM genetic research.
- Understanding OM genetics is key to developing new interventions.
Abstract:
Otitis media (OM) is among the most common illnesses of early childhood, characterised by the presence of inflammation in the middle ear cavity. Acute OM and chronic OM with effusion (COME) affect the majority of children by school age and have heritability estimates of 40-70%. However, the majority of genes underlying this susceptibility are, as yet, unidentified. One method of identifying genes and pathways that may contribute to OM susceptibility is to look at mouse mutants displaying a comparable phenotype. Single-gene mouse mutants with OM have identified a number of genes, namely, Eya4, Tlr4, p73, MyD88, Fas, E2f4, Plg, Fbxo11, and Evi1, as potential and biologically relevant candidates for human disease. Recent studies suggest that this "mouse-to-human" approach is likely to yield relevant data, with significant associations reported between polymorphisms at the FBXO11, TLR4, and PAI1 genes and disease in humans. An association between TP73 and chronic rhinosinusitis has also been reported. In addition, the biobanks of available mouse mutants provide a powerful resource for functional studies of loci identified by future genome-wide association studies of OM in humans. Mouse models of OM therefore are an important component of current approaches attempting to understand the complex genetic susceptibility to OM in humans, and which aim to facilitate the development of preventative and therapeutic interventions for this important and common disease.
