Document Detail

The role of globo-series glycolipids in neuronal cell differentiation--a review.
MedLine Citation:
PMID:  9482241     Owner:  NLM     Status:  MEDLINE    
Alterations in glycolipid composition as well as glycosyltransferase activities during cellular differentiation and growth have been well documented. However, the underlying mechanisms for the regulation of glycolipid expression remain obscure. One of the major obstacles has been the lack of a well defined model system for studying these phenomena. We have chosen PC12 pheochromocytoma cells as a model because (a) the properties of these cells have been well characterized, and (b) they respond to nerve growth factor (NGF) by differentiating into sympathetic-like neurons and are amenable to well-controlled experimentation. Thus, PC12 cells represent a suitable model for studying changes in glycolipid metabolism in relation to cellular differentiation. We have previously shown that subcloned PC12 cells accumulate a unique series of globo-series neutral glycolipids which are not expressed in parental PC12 cells. This unusual change in glycolipid distribution is accompanied by changes in the activities of specific glycosyltransferases involved in their synthesis and is correlated with neuritogenesis and/or cellular differentiation in this cell line. We have further demonstrated that changes in the glycosyltransferase activities may be modulated by the phosphorylation states of the cells via protein kinase systems. We conclude that these unique globo-series glycolipids may play a functional role in the initiation and/or maintenance of neurite outgrowth in PC12 cells.
T Ariga; R K Yu
Publication Detail:
Type:  Journal Article; Research Support, U.S. Gov't, P.H.S.; Review    
Journal Detail:
Title:  Neurochemical research     Volume:  23     ISSN:  0364-3190     ISO Abbreviation:  Neurochem. Res.     Publication Date:  1998 Mar 
Date Detail:
Created Date:  1998-03-26     Completed Date:  1998-03-26     Revised Date:  2007-11-14    
Medline Journal Info:
Nlm Unique ID:  7613461     Medline TA:  Neurochem Res     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  291-303     Citation Subset:  IM    
Department of Biochemistry and Molecular Biophysics, Medical College of Virginia, Virginia Commonwealth University, Richmond 23298-0614, USA.
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MeSH Terms
Carbohydrate Sequence
Cell Differentiation / drug effects
Globosides / physiology*
Glycosphingolipids / physiology*
Molecular Sequence Data
Neurons / cytology*,  enzymology,  metabolism*
Grant Support
Reg. No./Substance:
0/Globosides; 0/Glycosphingolipids

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