Toxoplasma and Dendritic Cells: An Intimate Relationship That Deserves Further Scrutiny

Trends Parasitol. 2019 Nov;35(11):870-886. doi: 10.1016/j.pt.2019.08.001. Epub 2019 Sep 3.

Abstract

Toxoplasma gondii (Tg), an obligate intracellular parasite of the phylum Apicomplexa, infects a wide range of animals, including humans. A hallmark of Tg infection is the subversion of host responses, which is thought to favor parasite persistence and propagation to new hosts. Recently, a variety of parasite-secreted modulatory effectors have been uncovered in fibroblasts and macrophages, but the specific interplay between Tg and dendritic cells (DCs) is just beginning to emerge. In this review, we summarize the current knowledge on Tg-DC interactions, including innate recognition, cytokine production, and antigen presentation, and discuss open questions regarding how Tg-secreted effectors may shape DC functions to perturb innate and adaptive immunity.

Keywords: Toxoplasma gondii; antigen presentation; dendritic cells; innate sensing; migration.

Publication types

  • Review

MeSH terms

  • Animals
  • Dendritic Cells / immunology*
  • Dendritic Cells / parasitology*
  • Host-Parasite Interactions / immunology*
  • Humans
  • Toxoplasma / immunology*
  • Toxoplasmosis / immunology*
  • Toxoplasmosis / parasitology