Tmem79/Matt is the matted mouse gene and is a predisposing gene for atopic dermatitis in human subjects

Sean P Saunders, Christabelle S M Goh, Sara J Brown, Colin N A Palmer, Rebecca M Porter, Christian Cole, Linda E Campbell, Marek Gierlinski, Geoffrey J Barton, Georg Schneider, Allan Balmain, Alan R Prescott, Stephan Weidinger, Hansjörg Baurecht, Michael Kabesch, Christian Gieger, Young-Ae Lee, Roger Tavendale, Somnath Mukhopadhyay, Stephen W TurnerVishnu B Madhok, Frank M Sullivan, Caroline Relton, John Burn, Simon Meggitt, Catherine H Smith, Michael A Allen, Jonathan N W N Barker, Nick J Reynolds, Heather J Cordell, Alan D Irvine, W H Irwin McLean, Aileen Sandilands, Padraic G Fallon

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    Abstract

    Background
    Atopic dermatitis (AD) is a major inflammatory condition of the skin caused by inherited skin barrier deficiency, with mutations in the filaggrin gene predisposing to development of AD. Support for barrier deficiency initiating AD came from flaky tail mice, which have a frameshift mutation in Flg and also carry an unknown gene, matted, causing a matted hair phenotype.
    Objective
    We sought to identify the matted mutant gene in mice and further define whether mutations in the human gene were associated with AD.
    Methods
    A mouse genetics approach was used to separate the matted and Flg mutations to produce congenic single-mutant strains for genetic and immunologic analysis. Next-generation sequencing was used to identify the matted gene. Five independently recruited AD case collections were analyzed to define associations between single nucleotide polymorphisms (SNPs) in the human gene and AD. Results
    The matted phenotype in flaky tail mice is due to a mutation in the Tmem79/Matt gene, with no expression of the encoded protein mattrin in the skin of mutant mice. Mattft mice spontaneously have dermatitis and atopy caused by a defective skin barrier, with mutant mice having systemic sensitization after cutaneous challenge with house dust mite allergens. Meta-analysis of 4,245 AD cases and 10,558 population-matched control subjects showed that a missense SNP, rs6694514, in the human MATT gene has a small but significant association with AD.
    Conclusion
    In mice mutations in Matt cause a defective skin barrier and spontaneous dermatitis and atopy. A common SNP in MATT has an association with AD in human subjects. © 2013 American Academy of Allergy, Asthma & Immunology.

    Original languageEnglish
    Pages (from-to)1121-1129
    Number of pages9
    JournalJournal of Allergy and Clinical Immunology
    Volume132
    Issue number5
    DOIs
    Publication statusPublished - Nov 2013

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    Saunders, S. P., Goh, C. S. M., Brown, S. J., Palmer, C. N. A., Porter, R. M., Cole, C., Campbell, L. E., Gierlinski, M., Barton, G. J., Schneider, G., Balmain, A., Prescott, A. R., Weidinger, S., Baurecht, H., Kabesch, M., Gieger, C., Lee, Y-A., Tavendale, R., Mukhopadhyay, S., ... Fallon, P. G. (2013). Tmem79/Matt is the matted mouse gene and is a predisposing gene for atopic dermatitis in human subjects. Journal of Allergy and Clinical Immunology, 132(5), 1121-1129. https://doi.org/10.1016/j.jaci.2013.08.046