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  • Macrophage migration inhibitory factor and its binding partner HTRA1 are expressed by olfactory ensheathing cells

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    Submitted Manuscript (SM)
    Author(s)
    Wright, AA
    Todorovic, M
    Murtaza, M
    John, JA St
    Ekberg, JA
    Griffith University Author(s)
    Todorovic, Michael
    Ekberg, Jenny A.
    Murtaza, Mariyam
    St John, James A.
    Year published
    2019
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    Abstract
    Macrophage migration inhibitory factor (MIF) is an important regulator of innate immunity with key roles in neural regeneration and responses to pathogens, amongst a multitude of other functions. The expression of MIF and its binding partners has been characterised throughout the nervous system, with one key exception: the primary olfactory nervous system. Here, we showed in young mice (postnatal day 10) that MIF is expressed in the olfactory nerve by olfactory ensheathing glial cells (OECs) and by olfactory nerve fibroblasts. We also examined the expression of potential binding partners for MIF, and found that the serine ...
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    Macrophage migration inhibitory factor (MIF) is an important regulator of innate immunity with key roles in neural regeneration and responses to pathogens, amongst a multitude of other functions. The expression of MIF and its binding partners has been characterised throughout the nervous system, with one key exception: the primary olfactory nervous system. Here, we showed in young mice (postnatal day 10) that MIF is expressed in the olfactory nerve by olfactory ensheathing glial cells (OECs) and by olfactory nerve fibroblasts. We also examined the expression of potential binding partners for MIF, and found that the serine protease HTRA1, known to be inhibited by MIF, was also expressed at high levels by OECs and olfactory fibroblasts in vivo and in vitro. We also demonstrated that MIF mediated segregation between OECs and J774a.1 cells (a monocyte/macrophage cell line) in co-culture, which suggests that MIF contributes to the fact that macrophages are largely absent from olfactory nerve fascicles. Phagocytosis assays of axonal debris demonstrated that MIF strongly stimulates phagocytosis by OECs, which indicates that MIF may play a role in the response of OECs to the continual turnover of olfactory axons that occurs throughout life.
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    Journal Title
    Molecular and Cellular Neuroscience
    DOI
    https://doi.org/10.1016/j.mcn.2019.103450
    Copyright Statement
    © The Author(s) 2019. This is an Open Access article distributed under the terms of the Creative Commons Attribution-NonCommercial-NoDerivs 4.0 International (CC BY-NC-ND 4.0) License, which permits unrestricted, non-commercial use, distribution and reproduction in any medium, providing that the work is properly cited.
    Note
    This publication has been entered into Griffith Research Online as an Advanced Online Version.
    Subject
    Neurosciences
    Cognitive and computational psychology
    Biochemistry and cell biology
    Glia
    MIF
    OEC
    Olfactory bulb
    Regeneration
    Publication URI
    http://hdl.handle.net/10072/389628
    Collection
    • Journal articles

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