Display Settings:

Format

Send to:

Choose Destination
We are sorry, but NCBI web applications do not support your browser and may not function properly. More information
    J Clin Immunol. 2010 Sep;30(5):681-92. doi: 10.1007/s10875-010-9432-3. Epub 2010 Jun 23.

    IL-2 immunotherapy to recently HIV-1 infected adults maintains the numbers of IL-17 expressing CD4+ T (T(H)17) cells in the periphery.

    Source

    Division of Experimental Medicine, Department of Medicine, San Francisco General Hospital, University of California, San Francisco, San Francisco, CA, USA. lndhlovu@medsfgh.ucsf.edu

    Abstract

    Little is known about the manipulation of IL-17 producing CD4+ T cells (T(H)17) on a per-cell basis in humans in vivo. Previous studies on the effects of IL-2 on IL-17 secretion in non-HIV models have shown divergent results. We hypothesized that IL-2 would mediate changes in IL-17 levels among recently HIV-1-infected adults receiving anti-retroviral therapy. We measured cytokine T cell responses to CD3/CD28, HIV-1 Gag, and CMV pp65 stimulation, and changes in multiple CD4+ T cell subsets. Those who received IL-2 showed a robust expansion of naive and total CD4+ T cell counts and T-reg counts. However, after IL-2 treatment, the frequency of T(H)17 cells declined, while counts of T(H)17 cells did not change due to an expansion of the CD4+ naïve T cell population (CD27+CD45RA+). Counts of HIV-1 Gag-specific T cells declined modestly, but CMV pp65 and CD3/CD28 stimulated populations did not change. Hence, in contrast with recent studies, our results suggest IL-2 is not a potent in vivo regulator of T(H)17 cell populations in HIV-1 disease. However, IL-2-mediated T-reg expansions may selectively reduce responses to certain antigen-specific populations, such as HIV-1 Gag.

    PMID:
    20571894
    [PubMed - indexed for MEDLINE]
    PMCID:
    PMC2935971
    Free PMC Article

    Images from this publication.See all images (7)Free text

    Fig. 2
    Fig. 4
    Fig. 6
    Fig. 1
    Fig. 3
    Fig. 5
    Fig. 7

      Supplemental Content

      Icon for Springer Icon for PubMed Central

      Save items

      Recent activity

      Your browsing activity is empty.

      Activity recording is turned off.

      Turn recording back on

      See more...
      Write to the Help Desk