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© A-M. Pais-Correia, M-I. Thoulouze, A. Alcover, A. Gessain
Mise en évidence de structures de type "biofilm ", formées par le rétrovirus HTLV-1 générés par des cellules infectées (cellules du haut), qui ont été transmis à un autre lymphocyte (cellule du bas). Micrographie en microscopie électronique à balayage. Image colorisée.
Scientific Fields
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Published in Virology - 10 Aug 2006

Buseyne F, Scott-Algara D, Corre B, Porrot F, Monchatre E, Bellal N, Burgard M, Rouzioux C, Blanche S, Rivière Y

Link to Pubmed [PMID] – 16904156

Virology 2006 Oct;354(2):271-9

Recognition of various HIV proteins by CD8 T cells from HIV-infected children was determined by two functional assays. First, using an Elispot assay, we show that 80% of patients recognized Gag, 77% recognized Pol, 61% recognized Env, 44% recognized Nef and 29% recognized Vif. Frequencies of Gag-, Pol-, and Env-specific IFN-gamma producing CD8 T cells were higher than frequencies of Nef and Vif-specific CD8 T cells. The poor recognition of Nef by ex vivo CD8 T cells was confirmed by CTL assays performed in HAART naïve children: 25% of children had positive response against Nef versus 44, 63 and 62% for Env, Gag, and Pol, respectively. Memory Gag-specific CTL were positively correlated with age, whereas Nef-specific CTL were negatively correlated with age. The poor Nef-specific CD8 T cell response in HIV-infected children contrasts with dominance of Nef-specific responses in infected adults.