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Front Cell Neurosci. 2016 Jul 05;10:177. doi: 10.3389/fncel.2016.00177. eCollection 2016.

Over-Expression of Meteorin Drives Gliogenesis Following Striatal Injury.

Frontiers in cellular neuroscience

Jordan L Wright, Charlotte M Ermine, Jesper R Jørgensen, Clare L Parish, Lachlan H Thompson

Affiliations

  1. The Florey Institute of Neuroscience and Mental Health, The University of Melbourne, Melbourne, VIC Australia.
  2. NsGene, Ballerup Denmark.

PMID: 27458346 PMCID: PMC4932119 DOI: 10.3389/fncel.2016.00177

Abstract

A number of studies have shown that damage to brain structures adjacent to neurogenic regions can result in migration of new neurons from neurogenic zones into the damaged tissue. The number of differentiated neurons that survive is low, however, and this has led to the idea that the introduction of extrinsic signaling factors, particularly neurotrophic proteins, may augment the neurogenic response to a level that would be therapeutically relevant. Here we report on the impact of the relatively newly described neurotrophic factor, Meteorin, when over-expressed in the striatum following excitotoxic injury. Birth-dating studies using bromo-deoxy-uridine (BrdU) showed that Meteorin did not enhance injury-induced striatal neurogenesis but significantly increased the proportion of new cells with astroglial and oligodendroglial features. As a basis for comparison we found under the same conditions, glial derived neurotrophic factor significantly enhanced neurogenesis but did not effect gliogenesis. The results highlight the specificity of action of different neurotrophic factors in modulating the proliferative response to injury. Meteorin may be an interesting candidate in pathological settings involving damage to white matter, for example after stroke or neonatal brain injury.

Keywords: GDNF; brain repair; forebrain injury; neurogenesis; oligodendrogenesis; striatum

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