Document Detail


IMP2 regulates differentiation potentials of mouse neocortical neural precursor cells.
MedLine Citation:
PMID:  23331702     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
Neural precursor cells (NPCs) in the mammalian neocortex generate various neuronal and glial cell types in a developmental stage-dependent manner. Most neocortical NPCs lose their neurogenic potential after birth. We have previously shown that high-mobility group A (HMGA) proteins confer the neurogenic potential on early-stage NPCs during the midgestation period, although the underlying mechanisms are not fully understood. In this study, we found that HMGA2 promotes the expression of insulin-like growth factor 2 mRNA-binding protein 2 (IMP2, Igf2bp2) in neocortical NPCs. The level of IMP2 was indeed high in early-stage NPCs compared with that in late-stage NPCs. Importantly, over-expression of IMP2 increased the neurogenic potential and suppressed astrocytic differentiation of late-stage NPCs, whereas knockdown of IMP2 promoted astrocytic differentiation and reduced the neurogenic potential of early-stage neocortical NPCs without overtly affecting cell proliferation. Our results thus identified IMP2 as a developmental stage-dependent regulator of the differentiation potentials of NPCs in the mouse neocortex.
Authors:
Yuki Fujii; Yusuke Kishi; Yukiko Gotoh
Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2013-1-21
Journal Detail:
Title:  Genes to cells : devoted to molecular & cellular mechanisms     Volume:  -     ISSN:  1365-2443     ISO Abbreviation:  Genes Cells     Publication Date:  2013 Jan 
Date Detail:
Created Date:  2013-1-21     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:
© 2013 The Authors Genes to Cells © 2013 by the Molecular Biology Society of Japan and Wiley Publishing Asia Pty Ltd.
Affiliation:
Institute of Molecular and Cellular Biosciences, The University of Tokyo, 1-1-1 Yayoi, Bunkyo-ku, Tokyo, 113-0032, Japan.
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