| DOI | Trouver le DOI : https://doi.org/10.1016/j.nbd.2008.11.016 |
|---|
| Auteur | Rechercher : Sandhu, Jagdeep K.1; Rechercher : Gardaneh, Mossa1; Rechercher : Iwasiow, Rafal1; Rechercher : Lanthier, Patricia1; Rechercher : Gangaraju, Sandhya1; Rechercher : Ribecco-Lutkiewicz, Maria1; Rechercher : Tremblay, Roger1; Rechercher : Kiuchi, Kazutoshi; Rechercher : Sikorska, Marianna1 |
|---|
| Affiliation | - Conseil national de recherches du Canada. Institut des sciences biologiques du CNRC
|
|---|
| Format | Texte, Article |
|---|
| Sujet | neuroprotection; neuro-regeneration; neurotrophic factor; signal transduction; thiol antioxidant; coculture; viral vectors; lentiviral vector; oxidative stress; gene therapy; administration & dosage; adverse effects; analysis of variance; antagonists & inhibitors; antioxidants; astrocytes; blotting, western; brain; buthionine sulfoximine; Canada; cell; cell survival; coculture techniques; component; cytomegalovirus; drug effects; gene; gene expression; glial cell line-derived neurotrophic factor; glial fibrillary acidic protein; glutathione; immunohistochemistry; In vitro; mechanisms; metabolism; mice; molecular; neurons; oxidopamine; pathway; physiology; polymerase chain reaction; protection; protein; secretion; signal transduction; toxicity; transfection |
|---|
| Résumé | In recent years, GDNF has emerged as a protective and restorative agent in several models of neurodegeneration; however, the exact molecular mechanisms responsible for these effects are not yet fully understood. Here we examined the effects of astrocytes secreting GDNF on neurons subjected to 6OHDA toxicity using in vitro neuron-astroglia co-cultures. Astrocytes were transduced with lentiviral vectors carrying the GDNF gene under the control of either human glial fibrillary acidic protein or cytomegalovirus promoters. The overexpression of GDNF, regardless of the promoter employed, had no obvious adverse effects on astroglia and the engineered cells stably produced and secreted GDNF for extended periods of time (≥3 weeks). These astrocytes very effectively protected neurons against 6OHDA, in both mouse and human co-culture systems. The neuroprotective effects were mediated not only by GDNF, but also by the antioxidant GSH since its depletion reduced the level of GDNF protection. Furthermore, neurons and astrocytes expressed different components of GDNF signaling complex, suggesting that they might utilize separate pathways to mediate autocrine and paracrine effects of GDNF. |
|---|
| Date de publication | 2008-12-11 |
|---|
| Dans | |
|---|
| Langue | anglais |
|---|
| Publications évaluées par des pairs | Oui |
|---|
| Numéro du CNRC | SANDHU2009 |
|---|
| Numéro NPARC | 15465376 |
|---|
| Exporter la notice | Exporter en format RIS |
|---|
| Signaler une correction | Signaler une correction (s'ouvre dans un nouvel onglet) |
|---|
| Identificateur de l’enregistrement | 2d67d98a-3db3-4454-a67c-6f1fb6e3df4e |
|---|
| Enregistrement créé | 2010-08-16 |
|---|
| Enregistrement modifié | 2020-04-15 |
|---|
