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Development/Plasticity/Repair

Grafts of Brain-Derived Neurotrophic Factor and Neurotrophin 3-Transduced Primate Schwann Cells Lead to Functional Recovery of the Demyelinated Mouse Spinal Cord

Christelle Girard, Alexis-Pierre Bemelmans, Noëlle Dufour, Jacques Mallet, Corinne Bachelin, Brahim Nait-Oumesmar, Anne Baron-Van Evercooren and François Lachapelle
Journal of Neuroscience 31 August 2005, 25 (35) 7924-7933; DOI: https://doi.org/10.1523/JNEUROSCI.4890-04.2005
Christelle Girard
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Alexis-Pierre Bemelmans
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Noëlle Dufour
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Jacques Mallet
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Corinne Bachelin
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Brahim Nait-Oumesmar
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Anne Baron-Van Evercooren
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François Lachapelle
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Abstract

Experimental studies provided overwhelming proof that transplants of myelin-forming cells achieve efficient remyelination in the CNS. Among cellular candidates, Schwann cells can be used for autologous transplantation to ensure robust remyelination of lesions and to deliver therapeutic factors in the CNS. In the present study, macaque Schwann cells expressing green fluorescent protein (GFP) were infected with human immunodeficiency virus-derived vectors overexpressing brain-derived neurotrophic factor (BDNF) or Neurotrophin 3 (NT-3), two neurotrophins that also modulate glial cell biology. The ability of transgenic Schwann cells to secrete growth factors was assessed by ELISA and showed 35- and 62-fold increases in BDNF and NT-3, respectively, in transduced macaque Schwann cell supernatants. Conditioned media of BDNF- and NT-3-transduced Schwann cells reduced Schwann cell proliferation and favored their differentiation in vitro. Transgenic cells were grafted in demyelinated spinal cords of adult nude mice. Two behavioral assays showed that NT-3- and BDNF-transduced Schwann cells promoted faster and stronger functional recovery than GFP-transduced Schwann cells. Morphological analysis indicated that functional recovery correlated with enhanced proliferation and differentiation of resident oligodendrocyte progenitors and enhanced oligodendrocyte and Schwann cell differentiation. Moreover, NT-3-transduced Schwann cells provided neuroprotection and reduced astrogliosis. These results underline the potential therapeutic benefit of combining neuroprotection and activation of myelin-forming cells to restore altered functions in demyelinating diseases of the CNS.

  • primate
  • Schwann cell
  • neurotrophins
  • remyelination
  • neuroprotection
  • astrogliosis
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The Journal of Neuroscience: 25 (35)
Journal of Neuroscience
Vol. 25, Issue 35
31 Aug 2005
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Grafts of Brain-Derived Neurotrophic Factor and Neurotrophin 3-Transduced Primate Schwann Cells Lead to Functional Recovery of the Demyelinated Mouse Spinal Cord
Christelle Girard, Alexis-Pierre Bemelmans, Noëlle Dufour, Jacques Mallet, Corinne Bachelin, Brahim Nait-Oumesmar, Anne Baron-Van Evercooren, François Lachapelle
Journal of Neuroscience 31 August 2005, 25 (35) 7924-7933; DOI: 10.1523/JNEUROSCI.4890-04.2005

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Grafts of Brain-Derived Neurotrophic Factor and Neurotrophin 3-Transduced Primate Schwann Cells Lead to Functional Recovery of the Demyelinated Mouse Spinal Cord
Christelle Girard, Alexis-Pierre Bemelmans, Noëlle Dufour, Jacques Mallet, Corinne Bachelin, Brahim Nait-Oumesmar, Anne Baron-Van Evercooren, François Lachapelle
Journal of Neuroscience 31 August 2005, 25 (35) 7924-7933; DOI: 10.1523/JNEUROSCI.4890-04.2005
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