Article (Scientific journals)
Synergistic activation of human immunodeficiency virus type 1 promoter activity by NF-kappa B and inhibitors of deacetylases: Potential perspectives for the development of therapeutic strategies
Quivy, Vincent; Adam, Emmanuelle; Collette, Yves et al.
2002In Journal of Virology, 76 (21), p. 11091-11103
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Abstract :
[en] The transcription factor NF-kappaB plays a central role in the human immunodeficiency virus type 1 (HIV-1) activation pathway. HIV-1 transcription is also regulated by protein acetylation, since treatment with deacetylase inhibitors such as trichostatin A (TSA) or sodium butyrate (NaBut) markedly induces HIV-1 transcriptional activity of the long terminal repeat (LTR) promoter. Here, we demonstrate that TSA (NaBut) synergized with both ectopically expressed p50/p65 and tumor necrosis factor alpha/SF2 (TNF)-induced NF-kappaB to activate the LTR. This was confirmed for LTRs from subtypes A through G of the HIV-1 major group, with a positive correlation between the number Of kappaB sites present in the LTRs and the amplitude of the TNF-TSA synergism. Mechanistically, TSA (NaBut) delayed the cytoplasmic recovery of the inhibitory protein IkappaBalpha. This coincided with a prolonged intranuclear presence and DNA binding activity of NF-kappaB. The physiological relevance of the TNF-TSA (NaBut) synergism was shown on HIV-1 replication in both acutely and latently HIV-infected cell lines. Therefore, our results open new therapeutic strategies aimed at decreasing or eliminating the pool of latently HIV-infected reservoirs by forcing viral expression.
Research center :
Giga-Signal Transduction - ULiège
Disciplines :
Immunology & infectious disease
Author, co-author :
Quivy, Vincent
Adam, Emmanuelle
Collette, Yves
Demonte, Dominique
Chariot, Alain ;  Université de Liège - ULiège > Département de pharmacie > Chimie médicale
Vanhulle, Caroline
Berkhout, Ben
Castellano, Rémy
de Launoit, Yvan
Burny, Arsène ;  Université de Liège - ULiège > Agro Biotech Gembloux
Piette, Jacques ;  Université de Liège - ULiège > Département des sciences de la vie > Virologie - Immunologie
Bours, Vincent ;  Université de Liège - ULiège > Département des sciences biomédicales et précliniques > Génétique générale et humaine
Van Lint, Carine
More authors (3 more) Less
Language :
English
Title :
Synergistic activation of human immunodeficiency virus type 1 promoter activity by NF-kappa B and inhibitors of deacetylases: Potential perspectives for the development of therapeutic strategies
Publication date :
November 2002
Journal title :
Journal of Virology
ISSN :
0022-538X
eISSN :
1098-5514
Publisher :
Amer Soc Microbiology, Washington, United States - Washington
Volume :
76
Issue :
21
Pages :
11091-11103
Peer reviewed :
Peer Reviewed verified by ORBi
Funders :
FNRS, TELEVIE, FBC, ARC ULG
Available on ORBi :
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