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Review
. 2011 Nov;45(3):538-48.
doi: 10.1007/s12031-011-9569-4. Epub 2011 Jun 21.

Structure, function, and mechanism of progranulin; the brain and beyond

Huishi Toh  1 , Babykumari P Chitramuthu, Hugh P J Bennett, Andrew Bateman
Affiliations
Review

Structure, function, and mechanism of progranulin; the brain and beyond

Huishi Toh et al. J Mol Neurosci. 2011 Nov.

Abstract

Mutation of human GRN, the gene encoding the secreted glycoprotein progranulin, results in a form of frontotemporal lobar degeneration that is characterized by the presence of ubiquitinated inclusions containing phosphorylated and cleaved fragments of the transactivation response element DNA-binding protein-43. This has stimulated interest in understanding the role of progranulin in the central nervous system, and in particular, how this relates to neurodegeneration. Progranulin has many roles outside the brain, including regulation of cellular proliferation, survival, and migration, in cancer, including cancers of the brain, in wound repair, and inflammation. It often acts through the extracellular signal-regulated kinase and phopshatidylinositol-3-kinases pathways. The neurobiology of progranulin has followed a similar pattern with proposed roles for progranulin (PGRN) in the central nervous system as a neuroprotective agent and in neuroinflammation. Here we review the structure, biology, and mechanism of progranulin action. By understanding PGRN in a wider context, we may be better able to delineate its roles in the normal brain and in neurodegenerative disease.

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