BMP-Id pathway targeted by cholesterol myristate suppresses the apoptosis of PC12 cells.
Brain Res
; 1367: 33-42, 2011 Jan 07.
Article
em En
| MEDLINE
| ID: mdl-20970407
ABSTRACT
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, ß-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.
Texto completo:
1
Base de dados:
MEDLINE
Medicinas Tradicionais:
Medicinas_tradicionales_de_asia
/
Medicina_china
Assunto principal:
Transdução de Sinais
/
Colesterol
/
Apoptose
/
Ácido Mirístico
/
Proteína 1 Inibidora de Diferenciação
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Proteína Morfogenética Óssea 4
Tipo de estudo:
Prognostic_studies
Idioma:
En
Revista:
Brain Res
Ano de publicação:
2011
Tipo de documento:
Article
País de afiliação:
China