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Distinctive effects of arachidonic acid and docosahexaenoic acid on neural stem /progenitor cells.
MedLine Citation:
PMID:  21668588     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
Arachidonic acid (ARA) and docosahexaenoic acid (DHA), which are the dominant polyunsaturated fatty acids in the brain, have crucial roles in brain development and function. Recent studies have shown that ARA and DHA promote postnatal neurogenesis. However, the direct effects of ARA on neural stem/progenitor cells (NSPCs) and the effects of ARA and DHA on NSPCs at the neurogenic and subsequent gliogenic stages are still unknown. Here, we analyzed the effects of ARA and DHA on neurogenesis, specifically maintenance and differentiation, using neurosphere assays. We confirmed that primary neurospheres are neurogenic NSPCs and that tertiary neurospheres are gliogenic NSPCs. Regarding the effects of ARA and DHA on neurogenic NSPCs, ARA and DHA increased the number of neurospheres, whereas neither ARA nor DHA had a detectable effect on NSPCs in the differentiation condition. In gliogenic NSPCs, DHA increased the number of neurospheres, whereas ARA had no such effect. In contrast, ARA increased the number of astrocytes, whereas DHA increased the number of neurons in the differentiation condition. These results suggest that ARA promotes the maintenance of neurogenic NSPCs and might induce the glial differentiation of gliogenic NSPCs and that DHA promotes the maintenance of both neurogenic and gliogenic NSPCs and might lead to the neuronal differentiation of gliogenic NSPCs.
Authors:
Nobuyuki Sakayori; Motoko Maekawa; Keiko Numayama-Tsuruta; Takashi Katura; Takahiro Moriya; Noriko Osumi
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2011-6-13
Journal Detail:
Title:  Genes to cells : devoted to molecular & cellular mechanisms     Volume:  -     ISSN:  1365-2443     ISO Abbreviation:  -     Publication Date:  2011 Jun 
Date Detail:
Created Date:  2011-6-14     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9607379     Medline TA:  Genes Cells     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Copyright Information:
© 2011 The Authors. Journal compilation © 2011 by the Molecular Biology Society of Japan/Blackwell Publishing Ltd.
Affiliation:
Division of Developmental Neuroscience, United Centers for Advanced Research and Translational Medicine (ART), Tohoku University School of Medicine, 2-1 Seiryo-machi, Aoba-ku, Sendai 980-8575, Japan Laboratory for Molecular Psychiatry, RIKEN Brain Science Institute, 2-1 Hirosawa, Wako 351-0198, Japan Department of Cellular Signaling, Tohoku University Graduate School of Pharmaceutical Sciences, 6-3 Aoba, Aramaki, Aoba-ku, Sendai 980-8578, Japan.
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