CD8+ NK cells are predominant in chimpanzees, characterized by high NCR expression and cytokine production, and preserved in chronic HIV-1 infection - PubMed (original) (raw)
. 2010 May;40(5):1440-50.
doi: 10.1002/eji.200940062.
Stefania Mazza, Roberto Biassoni, Gerrit Koopman, Elisabetta Ugolotti, Manuela Fogli, Rob Dubbes, Paola Costa, Maria C Mingari, Edward J D Greenwood, Lorenzo Moretta, Andrea De Maria, Jonathan L Heeney
Affiliations
- PMID: 20306468
- DOI: 10.1002/eji.200940062
Free article
CD8+ NK cells are predominant in chimpanzees, characterized by high NCR expression and cytokine production, and preserved in chronic HIV-1 infection
Erik Rutjens et al. Eur J Immunol. 2010 May.
Free article
Erratum in
- Eur J Immunol. 2010 Jun;40(6):1819. DeMaria, Andrea [corrected to De Maria, Andrea]
Abstract
HIV-1 infection in humans results in an early and progressive NK cell dysfunction and an accumulation of an "anergic" CD56- CD16+ NK subset, which is characterised by low natural cytotoxicity receptor expression and low cytokine producing capacity. In contrast to humans, chimpanzee NK cells do not display a distinguishable CD56(bright) and CD56(dim) subset but, as shown here, could be subdivided into functionally different CD8+ and CD8- subsets. The CD8+ NK cells expressed significantly higher levels of triggering receptors including NKp46 and, upon in vitro activation, produced more IFN-gamma, TNF-alpha and CD107 than their CD8- counterparts. In addition, chimpanzee CD8- NK cells had relatively high levels of HLA-DR expression, suggestive of an activated state. Killing inhibitory receptors were expressed only at low levels; however, upon in vitro stimulation, they were up-regulated in CD8+ but not in CD8- NK cells and were functionally capable of inhibiting NKp30-triggered killing. In contrast to HIV-1-infected humans, infected chimpanzees maintained their dominant CD8+ NK cell population, with high expression of natural cytotoxicity receptors.
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