Article (Scientific journals)
The proapoptotic C16-ceramide-dependent pathway requires the death-promoting factor Btf in colon adenocarcinoma cells.
Renert, Anne-Francoise; Leprince, Pierre; Dieu, Marc et al.
2009In Journal of Proteome Research, 8 (10), p. 4810-22
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Keywords :
ceramide; proteomic; apoptosis
Abstract :
[en] Ceramides are central molecules in sphingolipid metabolism. They are involved in the regulation of cancer-cell growth, differentiation, senescence and apoptosis. To better understand how these secondary messengers induce their biological effects, adenocarcinoma cells (HCT116) were treated with exogenous long-chain ceramides (C16-ceramide) in order to mimic endogenous sphingolipids. This treatment induced a decrease of cell viability partly due to apoptosis as shown by PARP cleavage and a decrease of pro-caspase 3. Two-dimensional differential in-gel electrophoresis (2D-DIGE) revealed the differential expression of 51 proteins in response to C16-ceramide. These proteins are notably involved in cell proliferation, apoptosis, protein transport and transcriptional regulation. Among them, the cell death-promoting factor Btf was found to be implicated in the apoptotic signal triggered by ceramide. In adenocarcinoma cells, Btf regulates apoptosis related proteins such as Mdm2, p53, BAX and pBcl-2 and thus plays an important role in the ceramide mediated cell death. These findings bring new insight into the proapoptotic ceramide-dependent signaling pathway.
Research center :
Giga-Signal Transduction - ULiège
Disciplines :
Pharmacy, pharmacology & toxicology
Author, co-author :
Renert, Anne-Francoise
Leprince, Pierre ;  Université de Liège - ULiège > CNCM/ Centre fac. de rech. en neurobiologie cell. et moléc.
Dieu, Marc
Renaut, Jenny
Raes, Martine
Bours, Vincent ;  Centre Hospitalier Universitaire de Liège - CHU > Génétique
Chapelle, Jean-Paul ;  Centre Hospitalier Universitaire de Liège - CHU > Chimie médicale
Piette, Jacques ;  Université de Liège - ULiège > Département des sciences de la vie > GIGA-R : Virologie - Immunologie - Département des sciences de la vie - GIGA-Research
Merville, Marie-Paule ;  Centre Hospitalier Universitaire de Liège - CHU > Chimie médicale
Fillet, Marianne ;  Université de Liège - ULiège > Département de pharmacie > Analyse des médicaments
Language :
English
Title :
The proapoptotic C16-ceramide-dependent pathway requires the death-promoting factor Btf in colon adenocarcinoma cells.
Publication date :
2009
Journal title :
Journal of Proteome Research
ISSN :
1535-3893
eISSN :
1535-3907
Publisher :
American Chemical Society, Washington, United States - District of Columbia
Volume :
8
Issue :
10
Pages :
4810-22
Peer reviewed :
Peer Reviewed verified by ORBi
Funders :
F.R.S.-FNRS - Fonds de la Recherche Scientifique [BE]
Available on ORBi :
since 25 November 2009

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