Butyrate-induced differentiation of Caco-2 cells is mediated by vitamin D receptor.
Biochem Biophys Res Commun
; 288(3): 690-6, 2001 Nov 02.
Article
in En
| MEDLINE
| ID: mdl-11676498
ABSTRACT
Butyrate in combination with 1,25-dihydroxyvitamin D3 [1,25-(OH)2D3] produces a synergistic effect on cell differentiation of human colon cancer cells (Caco-2). The objective of this study was to confirm the role of the vitamin D receptor (VDR) in butyrate-induced cell differentiation of Caco-2. We studied the effects of the novel VDR antagonist ZK 191732 on butyrate-induced cell differentiation and on p21Waf1/Cip1 expression. Butyrate induced cell differentiation which was further enhanced after addition of 1,25-(OH)2D3. Experiments using ZK 191732 indicate that the synergistic effect of butyrate and 1,25-(OH)2D3 was due to butyrate-induced upregulation of VDR. While butyrate alone increased expression of p21Waf1/Cip1 and combined exposure of butyrate and 1,25-(OH)2D3 resulted in a synergistic amplification, p21Waf1/Cip1 expression did not change from the control level after treatment with butyrate plus ZK 191732. These data further imply that butyrate-induced differentiation and p21Waf1/Cip1 expression of Caco-2 cells occur via upregulation of VDR.
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Collection:
01-internacional
Database:
MEDLINE
Main subject:
Thiazoles
/
Butyrates
/
Cell Differentiation
/
Receptors, Calcitriol
Limits:
Humans
Language:
En
Journal:
Biochem Biophys Res Commun
Year:
2001
Document type:
Article
Affiliation country: