HIV infection-associated immune activation occurs by two distinct pathways that differentially affect CD4 and CD8 T cells.

Catalfamo, M., Di Mascio, M., Hu, Z., Srinivasula, S., Thaker, V., Adelsberger, J., Rupert, A., Baseler, M., Tagaya, Y., Roby, G., Rehm, C., Follmann, D., Lane, H.C.
Journal   PNAS.
Species  
Analytes Measured   IL-10 , IL-12 p70 , IL-13 , IL-2 , IL-4 , IL-5 , IL-8
Matrix Tested   Serum
Year   2008
Volume   105
Page Numbers   19851-19856
Application   Cytokines and Chemokines
Abstract
HIV infection is characterized by a brisk immune activation that plays an important role in the CD4 depletion and immune dysfunction of patients with AIDS. The mechanism underlying this activation is poorly understood. In the current study, we tested the hypothesis that this activation is the net product of two distinct pathways: the inflammatory response to HIV infection and the homeostatic response to CD4 T cell depletion. Using ex vivo BrdU incorporation of PBMCs from 284 patients with different stages of HIV infection, we found that CD4 proliferation was better predicted by the combination of CD4 depletion and HIV viral load (R(2) = 0.375, P < 0.001) than by either parameter alone (CD4 T cell counts, R(2) = 0.202, P < 0.001; HIV viremia, R(2) = 0.302, P < 0.001). Interestingly, CD8 T cell proliferation could be predicted by HIV RNA levels alone (R(2) = 0.334, P < 0.001) and this predictive value increased only slightly (R(2) = 0.346, P < 0.001) when CD4 T cell depletion was taken into account. Consistent with the hypothesis that CD4 T cell proliferation is driven by IL-7 as a homeostatic response to CD4 T cell depletion, levels of phosphorylated STAT-5 were found to be elevated in naive subsets of CD4 and CD8 T cells from patients with HIV infection and in the central memory subset of CD4 T cells. Taken together these data demonstrate that at least two different pathways lead to immune activation of T cells in patients with HIV infection and these pathways differentially influence CD4 and CD8 T cell subsets.

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IL-12p70 | Non-human primate
U-PLEX Training Pack, 4-Assay
IL-1β, IL-6, IL-8, TNF-α | Human
Multiplex
U-PLEX Training Pack, 10-Assay
IL-1β, IL-6, IL-8, TNF-α | Human
Multiplex
U-PLEX Biomarker Group 1 (hu) Assays
CTACK, ENA-78, Eotaxin, Eotaxin-2, Eotaxin-3, EPO, FLT3L, Fractalkine, G-CSF, GM-CSF, GRO-α, I-309, IFN-α2a, IFN-β, IFN-γ, IL-1α, IL-1β, IL-1RA, IL-2, IL-2Rα, IL-3, IL-4, IL-5, IL-6, IL-7, IL-8, IL-9, IL-10, IL-12/IL-23p40, IL-12p70, IL-13, IL-15, IL-16, IL-17A, IL-17A/F, IL-17B, IL-17C, IL-17D, IL-17E/IL-25, IL-17F, IL-18, IL-21, IL-22, IL-23, IL-27, IL-29/IFN-λ1, IL-31, IL-33, IP-10, I-TAC, MCP-1, MCP-2, MCP-3, MCP-4, M-CSF, MDC, MIF, MIP-1α, MIP-1β, MIP-3α, MIP-3β, MIP-5, SDF-1α, TARC, TGF-β1, TGF-β2, TGF-β3, TNF-α, TNF-β, TPO, TRAIL, TSLP, VEGF-A, YKL-40 | Human
Multiplex
U-PLEX Biomarker Group 1 (NHP) Assays
CTACK, ENA-78, Eotaxin, Eotaxin-2, Eotaxin-3, FLT3L, Fractalkine, G-CSF, GM-CSF, GRO-α, I-309, IFN-α2a, IFN-γ, IL-1α, IL-1β, IL-1RA, IL-2, IL-4, IL-5, IL-6, IL-7, IL-8, IL-9, IL-10, IL-12/IL-23p40, IL-12p70, IL-13, IL-15, IL-16, IL-17A, IL-17A/F, IL-17B, IL-17C, IL-17D, IL-17F, IL-18, IL-22, IL-23, IP-10, I-TAC, MCP-1, MCP-2, MCP-3, MCP-4, M-CSF, MDC, MIF, MIP-1α, MIP-1β, MIP-3α, MIP-3β, MIP-5, SDF-1α, TARC, TGF-β1, TGF-β2, TGF-β3, TNF-α, TNF-β, TPO, TRAIL, VEGF-A, YKL-40 | Non-human primate
Multiplex
U-PLEX Chemokine Combo 1 (hu)
Eotaxin, Eotaxin-2, Eotaxin-3, IL-8, IP-10, MCP-1, MCP-2, MCP-3, MCP-4, MDC, MIP-1α, MIP-1β, TARC | Human
Multiplex
U-PLEX Chemokine Combo 1 (NHP)
Eotaxin, Eotaxin-3, IL-8, IP-10, MCP-1, MCP-4, MDC, MIP-1α, MIP-1β, TARC | Non-human primate
Multiplex
U-PLEX Custom Biomarker Group 1 (NHP) Assays
CTACK, ENA-78, Eotaxin, Eotaxin-2, Eotaxin-3, FLT3L, Fractalkine, G-CSF, GM-CSF, GRO-α, I-309, IFN-α2a, IFN-γ, IL-1α, IL-1β, IL-1RA, IL-2, IL-4, IL-5, IL-6, IL-7, IL-8, IL-9, IL-10, IL-12/IL-23p40, IL-12p70, IL-13, IL-15, IL-16, IL-17A, IL-17A/F, IL-17B, IL-17C, IL-17D, IL-17F, IL-18, IL-22, IL-23, IP-10, I-TAC, MCP-1, MCP-2, MCP-3, MCP-4, M-CSF, MDC, MIF, MIP-1α, MIP-1β, MIP-3α, MIP-3β, MIP-5, SDF-1α, TARC, TGF-β1, TGF-β2, TGF-β3, TNF-α, TNF-β, TPO, TRAIL, VEGF-A, YKL-40 | Non-human primate
Multiplex
U-PLEX Custom Biomarker Group 1 Human Assays
CTACK, ENA-78, Eotaxin, Eotaxin-2, Eotaxin-3, EPO, FLT3L, Fractalkine, G-CSF, GM-CSF, GRO-α, I-309, IFN-α2a, IFN-β, IFN-γ, IL-1α, IL-1β, IL-1RA, IL-2, IL-2Rα, IL-3, IL-4, IL-5, IL-6, IL-7, IL-8, IL-9, IL-10, IL-12/IL-23p40, IL-12p70, IL-13, IL-15, IL-16, IL-17A, IL-17A/F, IL-17B, IL-17C, IL-17D, IL-17E/IL-25, IL-17F, IL-18, IL-21, IL-22, IL-23, IL-27, IL-29/IFN-λ1, IL-31, IL-33, IP-10, I-TAC, MCP-1, MCP-2, MCP-3, MCP-4, M-CSF, MDC, MIF, MIP-1α, MIP-1β, MIP-3α, MIP-3β, MIP-5, SDF-1α, TARC, TGF-β1, TGF-β2, TGF-β3, TNF-α, TNF-β, TPO, TRAIL, TSLP, VEGF-A, YKL-40 | Human
Multiplex
U-PLEX Cytokine Combo 1 (hu)
GM-CSF, IL-1α, IL-5, IL-7, IL-12/IL-23p40, IL-15, IL-16, IL-17A, TNF-β, VEGF-A | Human
Multiplex
U-PLEX Cytokine Combo 1 (NHP)
GM-CSF, IL-1α, IL-5, IL-7, IL-12/IL-23p40, IL-15, IL-16, IL-17A, TNF-β, VEGF-A | Non-human primate
Multiplex
U-PLEX Human IL-2 Assay
IL-2 | Human
Singleplex
U-PLEX Human IL-4 Assay
IL-4 | Human
Singleplex
U-PLEX Human IL-5 Assay
IL-5 | Human
Singleplex
U-PLEX Human IL-8 Assay
IL-8 | Human
Singleplex
U-PLEX Human IL-10 Assay
IL-10 | Human
Singleplex
U-PLEX Human IL-12p70 Assay
IL-12p70 | Human
Singleplex
U-PLEX Human IL-13 Assay
IL-13 | Human
Singleplex
U-PLEX Mouse IL-2 Assay
IL-2 | Mouse
Singleplex
U-PLEX Mouse IL-4 Assay
IL-4 | Mouse
Singleplex
U-PLEX Mouse IL-5 Assay
IL-5 | Mouse
Singleplex
U-PLEX Mouse IL-10 Assay
IL-10 | Mouse
Singleplex
U-PLEX Mouse IL-12p70 Assay
IL-12p70 | Mouse
Singleplex
U-PLEX Mouse IL-13 Assay
IL-13 | Mouse
Singleplex
U-PLEX NHP IL-2 Assay
IL-2 | Non-human primate
Singleplex
U-PLEX NHP IL-5 Assay
IL-5 | Non-human primate
Singleplex
U-PLEX NHP IL-8 Assay
IL-8 | Non-human primate
Singleplex
U-PLEX NHP IL-10 Assay
IL-10 | Non-human primate
Singleplex
U-PLEX Proinflam Combo 1 (hu)
IFN-γ, IL-1β, IL-2, IL-4, IL-6, IL-8, IL-10, IL-12p70, IL-13, TNF-α | Human
Multiplex
U-PLEX Proinflam Combo 1 (NHP)
IFN-γ, IL-1β, IL-2, IL-4, IL-6, IL-8, IL-10, IL-12/IL-23p40, TNF-α | Non-human primate
Multiplex
U-PLEX Proinflam Combo 2 (hu)
GM-CSF, IFN-γ, IL-1β, IL-2, IL-4, IL-6, IL-8, IL-10, IL-12p70 | Human
Multiplex
U-PLEX Proinflam Combo 4 (hu)
IL-1β, IL-6, IL-8, TNF-α | Human
Multiplex
U-PLEX TH1/TH2 Combo (hu)
IFN-γ, IL-1β, IL-2, IL-4, IL-5, IL-8, IL-10, IL-12p70, IL-13, TNF-α | Human
Multiplex
U-PLEX TH1/TH2 Combo (ms)
IFN-γ, IL-1β, IL-2, IL-4, IL-5, IL-10, IL-12p70, IL-13, KC/GRO, TNF-α | Mouse
Multiplex
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