Mouse hygiene status—A tale of two environments for mast cells and allergy

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  • Yeh Yu-Wen
    Department of Health Technology and Informatics, Faculty of Health and Social Sciences, The Hong Kong Polytechnic University
  • Xiang Zou
    Department of Health Technology and Informatics, Faculty of Health and Social Sciences, The Hong Kong Polytechnic University

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  • Mouse hygiene status–A tale of two environments for mast cells and allergy

Abstract

<p>Animal models, including those employing the use of house mice (Mus musculus), are crucial in elucidating mechanisms in human pathophysiology. However, it is evident that the impreciseness of using laboratory mice maintained in super-hygienic barrier facilities to mirror relevant aspects of human physiology and pathology exists, which is a major limitation in translating mouse findings to inferring human medicine. Interestingly, free-living wild mice are found to be substantially different from laboratory-bred, specific pathogen-free mice with respect to various immune system compartments. Wild mice have an immune system that better reflects human immunity. In this review article, we discuss recent experimental findings that address the so-called “wild immunology”, which reveals the contrasting immune features between laboratory-raised mice and their wild companions as well as laboratory mice that have been exposed to a natural rodent habitat. A particular focus will be given to the development of pulmonary mast cells and its possible impact on the use of “naturalized” or “rewilded” laboratory mice as experimental asthma models.</p>

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