Differential expression of HIV-1 interfering factors in monocyte-derived macrophages stimulated with polarizing cytokines or interferons

Sci Rep. 2012:2:763. doi: 10.1038/srep00763. Epub 2012 Oct 23.

Abstract

HIV-1 replication in macrophages can be regulated by cytokines and infection is restricted in macrophages activated by type I interferons and polarizing cytokines. Here, we observed that the expression levels of the cellular factors Trim5α, CypA, APOBEC3G, SAMHD-1, Trim22, tetherin and TREX-1, and the anti-HIV miRNAs miR-28, miR-150, miR-223 and miR-382 was upregulated by IFN-α and IFN-β in macrophages, which may account for the inhibiting effect on viral replication and the antiviral state of these cells. Expression of these factors was also increased by IFN-γ +/- TNF-α, albeit to a lesser extent; yet, HIV-1 replication in these cells was not restricted at the level of proviral synthesis, indicating that these cellular factors only partially contribute to the observed restriction. IL-4, IL-10 or IL-32 polarization did not affect the expression of cellular factors and miRNAs, suggesting only a limited role for these cellular factors in restricting HIV-1 replication in macrophages.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Cytokines / pharmacology*
  • HIV Infections / immunology
  • HIV Infections / virology
  • HIV-1 / genetics
  • HIV-1 / pathogenicity*
  • HIV-1 / physiology*
  • Humans
  • Interferon Type I / pharmacology
  • Interferons / pharmacology*
  • Interleukin-4 / pharmacology
  • Macrophage Activation
  • Macrophages / drug effects
  • Macrophages / immunology*
  • Macrophages / virology*
  • MicroRNAs / genetics
  • MicroRNAs / metabolism
  • Reverse Transcription
  • Virus Replication / drug effects
  • Virus Replication / immunology
  • Virus Replication / physiology

Substances

  • Cytokines
  • IL4 protein, human
  • Interferon Type I
  • MicroRNAs
  • Interleukin-4
  • Interferons