Immune targeting and host-protective effects of the latent stage of Toxoplasma gondii.

ABSTRACT: Latency is a microbial strategy for persistence. For Toxoplasma gondii the bradyzoite stage forms long-lived cysts critical for transmission, and its presence in neurons is considered important for immune evasion. However, the extent to which cyst formation escapes immune pressure and mediates persistence remained unclear. Here we developed a mathematical model highlighting that bradyzoite-directed immunity contributes to control of cyst numbers. In vivo studies demonstrated that transgenic CD8⁺ T cells recognized a cyst-derived antigen, and neuronal STAT1 signalling promoted cyst control in mice. Modelling and experiments with parasites unable to form bradyzoites (Δbfd1) revealed that the absence of cyst formation in the central nervous system did not prevent long-term persiste

SUBMITTER: Eberhard JN 

PROVIDER: S-EPMC11964939 | biostudies-literature | 2025 Apr

REPOSITORIES: biostudies-literature