Article (Scientific journals)
HDAC4 represses p21(WAF1/Cip1) expression in human cancer cells through a Sp1-dependent, p53-independent mechanism.
Mottet, Denis; Pirotte, Sophie; Lamour, Virginie et al.
2009In Oncogene, 28 (2), p. 243-56
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Keywords :
histone deacetylase; p21; Sp1; siRNA; cancer
Abstract :
[en] Cancer cells have complex, unique characteristics that distinguish them from normal cells, such as increased growth rates and evasion of anti-proliferative signals. Global inhibition of class I and II histone deacetylases (HDACs) stops cancer cell proliferation in vitro and has proven effective against cancer in clinical trials, at least in part, through transcriptional reactivation of the p21(WAF1/Cip1)gene. The HDACs that regulate p21(WAF1/Cip1) are not fully identified. Using small interfering RNAs, we found that HDAC4 participates in the repression of p21(WAF1/Cip1) through Sp1/Sp3-, but not p53-binding sites. HDAC4 interacts with Sp1, binds and reduces histone H3 acetylation at the Sp1/Sp3 binding site-rich p21(WAF1/Cip1) proximal promoter, suggesting a key role for Sp1 in HDAC4-mediated repression of p21(WAF1/Cip1). Induction of p21(WAF1/Cip1) mediated by silencing of HDAC4 arrested cancer cell growth in vitro and inhibited tumor growth in an in vivo human glioblastoma model. Thus, HDAC4 could be a useful target for new anti-cancer therapies based on selective inhibition of specific HDACs.
Research center :
Giga-Cancer - ULiège
Disciplines :
Biochemistry, biophysics & molecular biology
Oncology
Author, co-author :
Mottet, Denis ;  Université de Liège - ULiège > Département des sciences biomédicales et précliniques > GIGA-R : Labo de recherche sur les métastases
Pirotte, Sophie ;  Université de Liège - ULiège > Département des sciences biomédicales et précliniques > GIGA-R : Labo de recherche sur les métastases
Lamour, Virginie ;  Université de Liège - ULiège > Centre facultaire de rech. en cancérologie expérimentale
Hagedorn, M.
Javerzat, S.
Bikfalvi, A.
Bellahcene, Akeila  ;  Université de Liège - ULiège > Département des sciences biomédicales et précliniques > GIGA-R : Labo de recherche sur les métastases
Castronovo, Vincenzo ;  Université de Liège - ULiège > Département des sciences biomédicales et précliniques > Biologie générale et cellulaire - GIGA-R : Labo de recherche sur les métastases
Verdin, Eric
Language :
English
Title :
HDAC4 represses p21(WAF1/Cip1) expression in human cancer cells through a Sp1-dependent, p53-independent mechanism.
Publication date :
2009
Journal title :
Oncogene
ISSN :
0950-9232
eISSN :
1476-5594
Publisher :
Nature Publishing Group, Basingstoke, United Kingdom
Volume :
28
Issue :
2
Pages :
243-56
Peer reviewed :
Peer Reviewed verified by ORBi
Funders :
European FP6 STROMA
European FP6 METABRE
F.R.S.-FNRS - Fonds de la Recherche Scientifique [BE]
CAC - Centre anticancéreux près l'Université de Liège asbl [BE]
Fonds Léon Fredericq [BE]
Interuniveristy Attraction Pole Program - Belgian Science Policy (IAP 5/31)
Télévie [BE]
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