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© Michaela Muller-Trutwin
HIV
Publication : Journal of immunology (Baltimore, Md. : 1950)

AIDS progression is associated with the emergence of IL-17-producing cells early after simian immunodeficiency virus infection

Scientific Fields
Diseases
Organisms
Applications
Technique

Published in Journal of immunology (Baltimore, Md. : 1950) - 16 Dec 2009

Campillo-Gimenez L, Cumont MC, Fay M, Kared H, Monceaux V, Diop O, Müller-Trutwin M, Hurtrel B, Lévy Y, Zaunders J, Dy M, Leite-de-Moraes MC, Elbim C, Estaquier J

Link to Pubmed [PMID] – 20018630

J. Immunol. 2010 Jan;184(2):984-92

IL-17 is a potent effector cytokine involved in inflammatory response and antimicrobial defense. We report that SIV infection of rhesus macaques (RMs) results in the emergence of IL-17-expressing cells during the acute phase. This subpopulation appears at day 14 postinfection concomitantly with an increase in TGF-beta and IL-18 expression. This subset, which exhibits phenotypic markers of NK T cells (NKT), rather than Th17 CD4 cells, persists during the chronic phase and is higher in noncontrollers SIV-infected RMs compared with controllers SIV-infected RMs. In contrast, in the nonpathogenic model of SIVagm infection of African green monkeys, no change in the level of IL-17-expressing cells is observed in lymphoid organs. Consistent with the emergence of TGF-beta and IL-18 during the acute phase in SIV-infected RMs, but not in SIV-infected African green monkeys, we demonstrate that in vitro TGF-beta and IL-18 induce the differentiation and expansion of IL-17+NKT+. Altogether, these results demonstrate that IL-17-producing NKT are associated with the pathogenesis of SIV in RMs and suggest that TGF-beta and IL-18 play a role in their development.

https://www.ncbi.nlm.nih.gov/pubmed/20018630