Tissue transglutaminase is not involved in the aggregate formation of stably expressed alpha-synuclein in SH-SY5Y human neuroblastoma cells.
Arch Pharm Res
; 27(8): 850-6, 2004 Aug.
Article
em En
| MEDLINE
| ID: mdl-15460447
ABSTRACT
Intraneuronal deposition containing alpha-synuclein is implicated in the pathogenesis of synuclein-opathies including Parkinsons disease (PD). Although it has been demonstrated that cytoplasmic inclusions of wild type alpha-synuclein are observed in the brain of PD patients and that alpha-synuclein mutations such as A30P and A53T accelerate aggregate formation, the exact mechanism by which alpha-synuclein forms insoluble aggregates is still controversial. In the present study, to understand the possible involvement of tissue transglutaminase (tTG) in aggregate formation of alpha-synuclein, SH-SY5Y cell lines stably expressing wild type or mutant (A30P or A53T) alpha-synuclein were created and aggregate formation of alpha-synuclein was observed upon activation of tTG. The data demonstrated that alpha-synuclein negligibly interacted with tTG and that activation of tTG did not result in the aggregate formation of alpha-synuclein in SH-SY5Y cells overexpressing either wild type or mutant alpha-synuclein. In addition, alpha-synuclein was not modified by activated tTG in situ. These data suggest that tTG is unlikely to be a contributing factor to the formation of aggregates of alpha-synuclein in a stable cell model.
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Base de dados:
MEDLINE
Assunto principal:
Transglutaminases
/
Proteínas de Ligação ao GTP
/
Proteínas do Tecido Nervoso
/
Neuroblastoma
Tipo de estudo:
Prognostic_studies
Limite:
Humans
Idioma:
En
Ano de publicação:
2004
Tipo de documento:
Article