PMID- 25378636 OWN - NLM STAT- MEDLINE DCOM- 20150522 LR - 20150325 IS - 1537-6613 (Electronic) IS - 0022-1899 (Linking) VI - 211 IP - 8 DP - 2015 Apr 15 TI - HIV Nef promotes expression of B-lymphocyte stimulator by blood dendritic cells during HIV infection in humans. PG - 1229-40 LID - 10.1093/infdis/jiu611 [doi] AB - Dendritic cells (DCs) modulate B-cell survival and differentiation, mainly through production of growth factors such as B lymphocyte stimulator (BLyS; also known as "B-cell factor belonging to the tumor necrosis factor family" [BAFF]). We have recently shown that, in human immunodeficiency virus (HIV)-infected individuals with rapid and those with classic disease progression, B-cell dysregulations were associated with increased BLyS expression in plasma and by blood myeloid DCs (mDCs), in contrast to aviremic HIV-infected individuals with slow disease progression (also known as "elite controllers"). In previous work with transgenic mice expressing HIV genes, B-cell dysregulations were concomitant with altered mDCs and dependent on HIV negative factor (Nef). We now report that HIV Nef is detected early after infection and despite successful therapy in plasma and BLyS-overexpressing blood mDCs of HIV-infected rapid and classic progressors, whereas it is low to undetectable in aviremic slow progressors. In vitro, HIV Nef drives monocyte-derived DCs toward BLyS overexpression through a process involving STAT1. Importantly, this is counteracted in the presence of all-trans retinoic acid. Nef thus contributes to high BLyS proinflammatory profiles in HIV-infected individuals. CI - (c) The Author 2014. Published by Oxford University Press on behalf of the Infectious Diseases Society of America. All rights reserved. For Permissions, please e-mail: journals.permissions@oup.com. FAU - Chagnon-Choquet, Josiane AU - Chagnon-Choquet J AD - Laboratoire d'immunogenetique, Centre de Recherche du Centre Hospitalier Departement de Microbiologie, Infectiologie et Immunologie, Universite de Montreal, Canada. FAU - Gauvin, Julie AU - Gauvin J AD - Laboratoire d'immunogenetique, Centre de Recherche du Centre Hospitalier Departement de Microbiologie, Infectiologie et Immunologie, Universite de Montreal, Canada. FAU - Roger, Julien AU - Roger J AD - Laboratoire d'immunogenetique, Centre de Recherche du Centre Hospitalier. FAU - Fontaine, Julie AU - Fontaine J AD - Laboratoire d'immunogenetique, Centre de Recherche du Centre Hospitalier Departement de Microbiologie, Infectiologie et Immunologie, Universite de Montreal, Canada. FAU - Poudrier, Johanne AU - Poudrier J AD - Laboratoire d'immunogenetique, Centre de Recherche du Centre Hospitalier Departement de Microbiologie, Infectiologie et Immunologie, Universite de Montreal, Canada. FAU - Roger, Michel AU - Roger M AD - Laboratoire d'immunogenetique, Centre de Recherche du Centre Hospitalier Departement de Microbiologie, Infectiologie et Immunologie, Universite de Montreal, Canada. CN - Montreal Primary HIV Infection and Slow Progressor Study Groups LA - eng GR - CHR-126633/Canadian Institutes of Health Research/Canada PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20141106 PL - United States TA - J Infect Dis JT - The Journal of infectious diseases JID - 0413675 RN - 0 (B-Cell Activating Factor) RN - 0 (STAT1 Transcription Factor) RN - 0 (STAT1 protein, human) RN - 0 (nef Gene Products, Human Immunodeficiency Virus) RN - 5688UTC01R (Tretinoin) SB - IM MH - Adult MH - B-Cell Activating Factor/*metabolism MH - B-Lymphocytes/*metabolism MH - Dendritic Cells/*metabolism MH - Female MH - HIV Infections/*metabolism MH - HIV-1/*metabolism MH - Humans MH - Male MH - Middle Aged MH - STAT1 Transcription Factor/metabolism MH - Tretinoin/metabolism MH - nef Gene Products, Human Immunodeficiency Virus/*metabolism OTO - NOTNLM OT - B lymphocyte stimulator (BLyS/BAFF) OT - HIV Nef OT - HIV disease control versus progression OT - dendritic cells FIR - Vassal, Anne IR - Vassal A FIR - Legault, Mario IR - Legault M FIR - Routy, Jean Pierre IR - Routy JP FIR - Tremblay, Cecile IR - Tremblay C FIR - Thomas, Rejean IR - Thomas R FIR - Trottier, Benoit IR - Trottier B FIR - Vezina, Sylvie IR - Vezina S FIR - Charest, Louise IR - Charest L FIR - Milne, Catherine IR - Milne C FIR - Friedman, Jason IR - Friedman J FIR - Huchet, Emmanuelle IR - Huchet E FIR - Baril, Jean-Guy IR - Baril JG FIR - Cote, Pierre IR - Cote P FIR - Lessard, Bernard IR - Lessard B FIR - Dufresne, Serge IR - Dufresne S FIR - Charron, Marc-Andre IR - Charron MA FIR - LeBlanc, Roger IR - LeBlanc R FIR - Labrecque, Louise IR - Labrecque L FIR - Rouleau, Danielle IR - Rouleau D FIR - Fortin, Claude IR - Fortin C FIR - Munoz, Marie IR - Munoz M FIR - Bruneau, Julie IR - Bruneau J FIR - Gilmore, Norbert IR - Gilmore N FIR - Lalonde, Richard IR - Lalonde R FIR - Potter, Martin IR - Potter M FIR - Klein, Marina IR - Klein M FIR - de Pokomandy, Alexandra IR - de Pokomandy A FIR - Szabo, Jason IR - Szabo J FIR - Bernard, Nicole IR - Bernard N EDAT- 2014/11/08 06:00 MHDA- 2015/05/23 06:00 CRDT- 2014/11/08 06:00 PHST- 2014/11/08 06:00 [entrez] PHST- 2014/11/08 06:00 [pubmed] PHST- 2015/05/23 06:00 [medline] AID - jiu611 [pii] AID - 10.1093/infdis/jiu611 [doi] PST - ppublish SO - J Infect Dis. 2015 Apr 15;211(8):1229-40. doi: 10.1093/infdis/jiu611. Epub 2014 Nov 6.