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  • Title: Stress proteins in CNS inflammation.
    Author: van Noort JM.
    Journal: J Pathol; 2008 Jan; 214(2):267-75. PubMed ID: 18161755.
    Abstract:
    Stress proteins or heat shock proteins (HSPs) are ubiquitous cellular components that have long been known to act as molecular chaperones. By assisting proper folding and transport of proteins, and by assisting in the degradation of aberrant proteins, they play key roles in cellular metabolism. The frequent accumulation of insoluble protein aggregates during chronic neurodegenerative disorders suggests failure of HSP functions to be a common denominator among such diseases. Recent developments have clarified that functions of HSPs extend well beyond their role in protein folding and degradation alone. Stress-inducible HSPs also regulate apoptosis, antigen presentation, inflammatory signalling pathways and, intriguingly, also serve as extracellular mediators of inflammation. Several receptors have been identified for extracellular HSPs, which control inflammatory pathways similar to those activated by cytokines and chemokines. In this review, both the traditional and the exciting novel functions of HSPs are discussed, with a focus on their relevance for neurodegeneration and neuroinflammation. Recent advances in this field suggest that HSPs represent attractive novel targets as well as therapeutic entities for CNS disorders.
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