Document Detail


NOTCHing the bone: insights into multi-functionality.
MedLine Citation:
PMID:  19520195     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Evolutionarily conserved Notch signaling plays a critical role during embryonic and postnatal life. The importance of Notch signaling in the determination of cell fate, and the spatio-temporal regulation of proliferation, differentiation and apoptosis has been demonstrated in various different organ systems. However, how Notch signaling affects the bone development was unknown until now. The in vivo effects of Notch signaling in lineage commitment, bone formation and bone resorption were demonstrated in recent studies. In addition to regulation of osteoblastogenesis, osteoblast directed osteoclastogenesis by Notch signaling revealed a dimorphic effect for this signaling pathway providing another example of such in bone development. Moreover, identification of the cross talk between the hematopoietic stem cell niche and osteoblasts through Notch signaling also suggested another important role for Notch signaling, i.e., the coupling of cellular components of the bone microenvironment. The association between the gain and loss of function of Notch activity in bone pathology highlights Notch as a potentially novel therapeutic target for the treatment of metabolic bone disease and bone cancer. In this review, we will focus primarily on the regulation of bone cells, i.e., osteoblasts and osteoclasts by Notch signaling. We will also review the importance of Notch in specifying bone-hematopoietic stem cell niche interactions within the bone microenvironment. Finally, we will discuss potential clinical implications and future directions for this field.
Authors:
Feyza Engin; Brendan Lee
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Publication Detail:
Type:  Journal Article; Review     Date:  2009-06-08
Journal Detail:
Title:  Bone     Volume:  46     ISSN:  1873-2763     ISO Abbreviation:  Bone     Publication Date:  2010 Feb 
Date Detail:
Created Date:  2010-02-04     Completed Date:  2010-04-22     Revised Date:  2011-08-01    
Medline Journal Info:
Nlm Unique ID:  8504048     Medline TA:  Bone     Country:  United States    
Other Details:
Languages:  eng     Pagination:  274-80     Citation Subset:  IM    
Copyright Information:
(c) 2009 Elsevier Inc. All rights reserved.
Affiliation:
Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX, USA.
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MeSH Terms
Descriptor/Qualifier:
Animals
Bone Diseases / metabolism
Bone Remodeling
Bone and Bones / metabolism*
Osteoblasts / cytology,  metabolism
Osteogenesis
Receptors, Notch / metabolism*
Grant Support
ID/Acronym/Agency:
P01 ES011253-05/ES/NIEHS NIH HHS; P01 HD022657-230003/HD/NICHD NIH HHS; R01 DE016990-05/DE/NIDCR NIH HHS
Chemical
Reg. No./Substance:
0/Receptors, Notch
Comments/Corrections

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