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BMP-Id pathway targeted by cholesterol myristate suppresses the apoptosis of PC12 cells.
MedLine Citation:
PMID:  20970407     Owner:  NLM     Status:  In-Process    
Abstract/OtherAbstract:
Identifying small molecules that suppress apoptosis is promising for the therapy of brain diseases. We recently showed that autocrine bone morphogenetic protein (BMP) signaling involves the effects of cholesterol myristate present in traditional Chinese medicine on mesenchymal stem cells. The present study evaluated the effects of cholesterol myristate on the apoptosis and BMP signaling of PC12 cells. PC12 cells transfected by the inhibitor of differentiation (Id1) promoter reporter construct target gene of BMP4 signaling; cholesterol myristate increases the activity of Id1 promoter. However, structurally related steroids such as cholesterol, β-sitosterol and cholesten-3-one, lack of the myristate, did not affect the activity of Id1 promoter, suggesting that myristate is essential for the effect of cholesterol myristate. These effects depend on BMP signaling. Apoptosis analysis indicated that cholesterol myristate inhibited the apoptosis of PC12 cells induced in serum-free condition. Cholesterol myristate significantly increases the expression of BMP4, BMPRIA, p-Smad1/5/8, Id1 and its antiapoptotic target gene Bcl-xL in PC12 cells treated in serum-free condition. Moreover, BMP antagonist reduced the anti-apoptotic effect of cholesterol myristate. Thus, this study is to provide evidence that BMP-Id pathway targeted by cholesterol myristate suppresses the apoptosis of PC12 cells. Our findings are therefore of considerable therapeutic significance and provide the potential of newly exploiting cholesterol myristate and clinically in brain disease therapies.
Authors:
Dong-Feng Chen; Jia-hui Cao; Yang Liu; Yiling Wu; Shao-Hui Du; Hui Li; Jian-Hong Zhou; Yi-Wei Li; He-Ping Zeng; Zi-Chun Hua
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't     Date:  2010-10-20
Journal Detail:
Title:  Brain research     Volume:  1367     ISSN:  1872-6240     ISO Abbreviation:  Brain Res.     Publication Date:  2011 Jan 
Date Detail:
Created Date:  2010-12-20     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0045503     Medline TA:  Brain Res     Country:  Netherlands    
Other Details:
Languages:  eng     Pagination:  33-42     Citation Subset:  IM    
Copyright Information:
Copyright © 2010 Elsevier B.V. All rights reserved.
Affiliation:
The State Key Laboratory of Pharmaceutical Biotechnology, Department of Biochemistry, Nanjing University, Nanjing, China. CDF27212@21cn.com
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