ArticlePLoS pathogens2012
The rhoptry proteins ROP18 and ROP5 mediate Toxoplasma gondii evasion of the murine, but not the human, interferon-gamma response.
Article in PLoS pathogens, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 140 papers.
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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Who cites it
140 citing papers in PubMed, 5 citations in OpenAlex.
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- Characterization of ovine abortion in Uruguay reveals extensive non-clonal diversity and multiple evolutionary origins of Toxoplasma gondii.Scientific reports · 2026Article
- The resistance to Toxoplasma gondii in Microtus fortis is associated with the activation of the complement lectin pathway.PLoS neglected tropical diseases · 2026Article
- Heterologous expression of interferon-stimulated genes reveals conserved anti-Frontiers in immunology · 2026Article
- Cysteine-S-nitrosylation inhibits Rop5-mediated immune evasion inbioRxiv : the preprint server for biology · 2025Article
- The early human interferon gamma response to Toxoplasma gondii is driven by Vγ9Vδ2 T-cell sensing of host phosphoantigens and subsequent NK-cell activation.PLoS pathogens · 2025Article
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- Comprehensive analysis of Toxoplasma gondii migration routes and tissue dissemination in the host.PLoS neglected tropical diseases · 2025Review
- Deletion of splicing factor Cdc5 in Toxoplasma disrupts transcriptome integrity, induces abortive bradyzoite formation, and prevents acute infection in mice.Nature communications · 2025Article
- Investigation of Virulence-Related Markers in Atypical Strains ofMicroorganisms · 2025Article
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- The microneme protein1 (MIC1) of Chinese 1 Toxoplasma regulates pyroptosis through the TLR4/NLRP3 pathway in macrophages.Parasites & vectors · 2024Article
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- Metabolic plasticity, essentiality and therapeutic potential of ribose-5-phosphate synthesis in Toxoplasma gondii.Nature communications · 2024Article
- Trx4, a novel thioredoxin protein, is important for Toxoplasma gondii fitness.Parasites & vectors · 2024Article
80 more citing papers are in PubMed but not listed here.
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Authors and funding
10 authors at 3 institutions in 3 countries.
Funding
Abstract
The obligate intracellular parasite Toxoplasma gondii secretes effector proteins into the host cell that manipulate the immune response allowing it to establish a chronic infection. Crosses between the types I, II and III strains, which are prevalent in North America and Europe, have identified several secreted effectors that determine strain differences in mouse virulence. The polymorphic rhoptry protein kinase ROP18 was recently shown to determine the difference in virulence between type I and III strains by phosphorylating and inactivating the interferon-γ (IFNγ)-induced immunity-related GTPases (IRGs) that promote killing by disrupting the parasitophorous vacuole membrane (PVM) in murine cells. The polymorphic pseudokinase ROP5 determines strain differences in virulence through an unknown mechanism. Here we report that ROP18 can only inhibit accumulation of the IRGs on the PVM of strains that also express virulent ROP5 alleles. In contrast, specific ROP5 alleles can reduce IRG coating even in the absence of ROP18 expression and can directly interact with one or more IRGs. We further show that the allelic combination of ROP18 and ROP5 also determines IRG evasion and virulence of strains belonging to other lineages besides types I, II and III. However, neither ROP18 nor ROP5 markedly affect survival in IFNγ-activated human cells, which lack the multitude of IRGs present in murine cells. These findings suggest that ROP18 and ROP5 have specifically evolved to block the IRGs and are unlikely to have effects in species that do not have the IRG system, such as humans.
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Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.