Delivery of GDNF by an E1,E3/E4 deleted adenoviral vector and driven by a GFAP promoter prevents dopaminergic neuron degeneration in a rat model of Parkinson's disease
Identifieur interne : 003456 ( Main/Merge ); précédent : 003455; suivant : 003457Delivery of GDNF by an E1,E3/E4 deleted adenoviral vector and driven by a GFAP promoter prevents dopaminergic neuron degeneration in a rat model of Parkinson's disease
Auteurs : N. A. Do Thi [France] ; P. Saillour [France] ; L. Ferrero [France] ; I. F. Dedieu [France] ; J. Mallet [France] ; T. Paunio [France, Finlande]Source :
- Gene therapy : (Basingstoke) [ 0969-7128 ] ; 2004.
Descripteurs français
- Pascal (Inist)
English descriptors
- KwdEn :
Abstract
A new adenoviral vector (Ad-GFAP-GDNF) (Ad= adenovirus, GFAP= glial fibrillary acidic protein, GDNF = glial cell line-derived neurotrophic factor) was constructed in which (i) the E1,E3/E4 regions of Ad5 were deleted and (ii) the GDNF transgene is driven by the GFAP promoter. We verified, in vitro, that the recombinant GDNF was expressed in primary cultures of astrocytes. In vivo, the Ad-GFAP-GDNF was injected into the striatum of rats 1 week before provoking striatal 6-OHDA lesion. After 1 month, the striatal GDNF levels were 37pg/μg total protein. This quantity was at least 120-fold higher than in nontransduced striatum or after injection of the empty adenoviral vector. At 3 months after viral injection, GDNF expression decreased, whereas the viral DNA remained unchanged. Furthermore, around 70% of the dopaminergic (DA) neurons were protected from degeneration up to 3 months as compared to about 45% in the control groups. In addition, the amphetamine-induced rotational behavior was decreased. The results obtained in this study on DA neuron protection and rotational behavior are similar to those previously reported using vectors with viral promoters. In addition to these results, we established that a high level of GDNF was present in the striatum and that the period of GDNF expression was prolonged after injection of our adenoviral vector.
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<profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Adenoviridae</term>
<term>Animal model</term>
<term>Degeneration</term>
<term>Dopaminergic neuron</term>
<term>Gene therapy</term>
<term>Glial cell line derived neurotrophic factor</term>
<term>Glial fibrillary acidic protein</term>
<term>Parkinson disease</term>
<term>Rat</term>
<term>Vector</term>
</keywords>
<keywords scheme="Pascal" xml:lang="fr"><term>Adenoviridae</term>
<term>Thérapie génique</term>
<term>Vecteur</term>
<term>Neurone dopaminergique</term>
<term>Dégénérescence</term>
<term>Rat</term>
<term>Modèle animal</term>
<term>Protéine gliofibrillaire</term>
<term>Facteur GDNF</term>
<term>Parkinson maladie</term>
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<front><div type="abstract" xml:lang="en">A new adenoviral vector (Ad-GFAP-GDNF) (Ad= adenovirus, GFAP= glial fibrillary acidic protein, GDNF = glial cell line-derived neurotrophic factor) was constructed in which (i) the E1,E3/E4 regions of Ad5 were deleted and (ii) the GDNF transgene is driven by the GFAP promoter. We verified, in vitro, that the recombinant GDNF was expressed in primary cultures of astrocytes. In vivo, the Ad-GFAP-GDNF was injected into the striatum of rats 1 week before provoking striatal 6-OHDA lesion. After 1 month, the striatal GDNF levels were 37pg/μg total protein. This quantity was at least 120-fold higher than in nontransduced striatum or after injection of the empty adenoviral vector. At 3 months after viral injection, GDNF expression decreased, whereas the viral DNA remained unchanged. Furthermore, around 70% of the dopaminergic (DA) neurons were protected from degeneration up to 3 months as compared to about 45% in the control groups. In addition, the amphetamine-induced rotational behavior was decreased. The results obtained in this study on DA neuron protection and rotational behavior are similar to those previously reported using vectors with viral promoters. In addition to these results, we established that a high level of GDNF was present in the striatum and that the period of GDNF expression was prolonged after injection of our adenoviral vector.</div>
</front>
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