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Osteopontin: A key link between immunity, inflammation and the central nervous system

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Translational Neuroscience

Abstract

Osteopontin (OPN) is a pro-inflammatory cytokine that can be secreted from many cells including activated macrophages and T-lymphocytes. Elevated levels of osteopontin in the plasma, cerebrospinal fluid or brain of individuals with neurodegenerative diseases such as multiple sclerosis (MS), Parkinson’s and Alzheimer’s disease and more recently in HIV-associated neurocognitive disorder has been reported. However, except for the case of MS, little is known regarding the molecular mechanisms by which OPN may exacerbate disease. Alternatively, OPN through its ability to promote cell survival may in some contexts function in the brain in a protective capacity. OPN has several protein motifs that allow it to engage with several different signaling pathways involved in immunity and inflammation. A better understanding of the cellular pathways that are regulated by OPN in cells of the central nervous system is required to uncover its putative role in neuronal homeostasis.

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  1. Johns Hopkins University School of Medicine, Baltimore, MD, USA

    Amanda Brown

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Brown, A. Osteopontin: A key link between immunity, inflammation and the central nervous system. Translat.Neurosci. 3, 288–293 (2012). https://doi.org/10.2478/s13380-012-0028-7

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