Abstract:
:Neural stem cells (NSCs) play a crucial role in the development and maturation of the central nervous system. Recently studies suggest that antipsychotic drugs regulate the activities of NSCs. However, the molecular mechanisms underlying antipsychotic-induced changes of the activity of NSCs, particularly protein expression, are still unknown. We studied the growth and protein expression in haloperidol (HD) and risperidone (RS) treated rat NSCs. The treatment with RS (3microM) or HD (3microM) had no effect on morphology of NSCs after 24h, but significantly promotes or inhibits the differentiation of NSCs after a 96h of treatment. 2-DE based proteomics was performed at 24h, a stage before phenotypic expression of NSCs. Gel image analysis revealed that 30 protein spots in HD- and 60 spots in RS-treated groups were differentially regulated in their expression compared to control group (p<0.05; ANOVA). When these spots were compared between the two drug-treated groups, 23 spots overlapped leaving 7 HD-specific and 37 RS-specific spots. Of these 67 spots, 32 different proteins were identified. The majority of the differentially regulated proteins were classified into several functional groups, such as cytoskeletal, calcium regulating protein, metabolism, signal transduction and proteins related to oxidative stress. Our data shows that atypical RS expressed more proteins than typical HD, and these results might explain the molecular mechanisms underlying the different effects of both drugs on NSCs activities as described above. Identified proteins in this experiment may be useful in future studies of NSCs differentiation and/or understanding in molecular mechanisms of different neural diseases including schizophenia.
journal_name
Neurochem Intjournal_title
Neurochemistry internationalauthors
Kashem MA,Ummehany R,Ukai W,Hashimoto E,Saito T,Mcgregor IS,Matsumoto Idoi
10.1016/j.neuint.2009.05.007subject
Has Abstractpub_date
2009-12-01 00:00:00pages
558-65issue
7eissn
0197-0186issn
1872-9754pii
S0197-0186(09)00171-5journal_volume
55pub_type
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journal_title:Neurochemistry international
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