Role of Innate Genes in HIV Replication

Curr Top Microbiol Immunol. 2018:419:69-111. doi: 10.1007/82_2017_29.

Abstract

Cells use an elaborate innate immune surveillance and defense system against virus infections. Here, we discuss recent studies that reveal how HIV-1 is sensed by the innate immune system. Furthermore, we present mechanisms on the counteraction of HIV-1. We will provide an overview how HIV-1 actively utilizes host cellular factors to avoid sensing. Additionally, we will summarize effectors of the innate response that provide an antiviral cellular state. HIV-1 has evolved passive mechanism to avoid restriction and to regulate the innate response. We review in detail two prominent examples of these cellular factors: (i) NLRX1, a negative regulator of the innate response that HIV-1 actively usurps to block cytosolic innate sensing; (ii) SAMHD1, a restriction factor blocking the virus at the reverse transcription step that HIV-1 passively avoids to escape sensing.

Publication types

  • Review

MeSH terms

  • HIV Infections / genetics*
  • HIV Infections / immunology*
  • HIV-1 / growth & development*
  • HIV-1 / immunology
  • Humans
  • Immunity, Innate / genetics*
  • Mitochondrial Proteins / genetics
  • Mitochondrial Proteins / metabolism
  • SAM Domain and HD Domain-Containing Protein 1 / genetics
  • SAM Domain and HD Domain-Containing Protein 1 / metabolism
  • Virus Replication* / immunology

Substances

  • Mitochondrial Proteins
  • NLRX1 protein, human
  • SAM Domain and HD Domain-Containing Protein 1
  • SAMHD1 protein, human