Inflammation stimulates myelination by transplanted oligodendrocyte precursor cells

Setzu, Anna, Lathia, Justin D., Zhao, Chao, Wells, Karen, Rao, Mahendra S., ffrench-Constant, Charles ORCID: https://orcid.org/0000-0002-5621-3377 and Franklin, Robin J. M. (2006) Inflammation stimulates myelination by transplanted oligodendrocyte precursor cells. Glia, 54 (4). pp. 297-303. ISSN 0894-1491

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Abstract

Inflammation associated with CNS demyelination provides an important stimulus for the activation of endogenous oligodendrocyte precursor cells (OPCs) and subsequent remyelination. This view is largely based on "loss-of-function" studies, whereby remyelination is impaired following depletion of inflammatory cells or mediators. However, "gain-of-function" approaches, asking whether inflammation directly enhances remyelination, have received less attention. We have addressed this issue using a model in which OPCs transplanted into the adult rat retina myelinate retinal ganglion cell axons around the point of injection. Inflammation (characterized by increased expression of the macrophage marker ED1 and the astrocyte marker GFAP, and the up-regulation of multiple cytokines) was induced in the retina by the administration of the TLR-2 ligand zymosan. Myelination, revealed by MBP+ myelin sheaths, was substantially increased when OPCs were injected into the inflamed retina compared to that achieved following transplantation into the normal, noninflamed retina. Our results have important implications for the development of immunomodulatory treatments for acute demyelinating disease and for the therapeutic creation of proremyelination environments in chronic demyelinating disease.

Item Type: Article
Uncontrolled Keywords: inflammation,multiple sclerosis,oligodendrocyte,precursor cell,remyelination,retina,transplantation,neurology,cellular and molecular neuroscience ,/dk/atira/pure/subjectarea/asjc/2800/2808
Faculty \ School: Faculty of Medicine and Health Sciences > Norwich Medical School
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Depositing User: LivePure Connector
Date Deposited: 16 Jul 2022 11:31
Last Modified: 12 Aug 2022 05:40
URI: https://ueaeprints.uea.ac.uk/id/eprint/86322
DOI: 10.1002/glia.20371

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