ArticleParasites & vectors2025
Toxoplasma gondii ROP18 induces maternal-fetal dysfunction by downregulating CD73 expression on decidual macrophages.
Article in Parasites & vectors, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.
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Who cites it
3 citing papers in PubMed.
- Review
- Trem2 negatively regulates the MTOR-PKCα axis to protect againstFrontiers in cellular and infection microbiology · 2026Article
- Trem2-MICAL1-P-ERK Axis in Macrophages Confers Protection AgainstPathogens (Basel, Switzerland) · 2025Article
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Authors and funding
11 authors.
Funding
Abstract
backgroundDecidual macrophages (dMφ) are pivotal in maintaining maternal-fetal immune tolerance during normal pregnancy by expressing a range of immune-suppressive molecules, including CD73. It has been demonstrated that Toxoplasma gondii (T. gondii) infection during pregnancy can impair dMφ function, potentially leading to adverse pregnancy outcomes, through downregulation of these inhibitory molecules. T. gondii rhoptry protein 18 (TgROP18), a key virulence factor of T. gondii, is associated with the incapacitation of the host's innate and adaptive immune responses to protect the parasite from elimination. However, the role of TgROP18 in modulating CD73 expression on dMφ and the underlying mechanisms remain to be elucidated.
methodsWild-type (WT) and CD73-deficient (CD73
resultsCompared with the T. gondii RH-infected group, milder adverse pregnancy outcomes and attenuated expression levels of CD73 on dMφ were observed in T. gondii RH-Δrop18-infected pregnant mice and human decidual tissues. Lysine-specific histone demethylase1 (LSD1) and snail family transcriptional repressor 1 (SNAIL1) were found to be involved in the downregulation of CD73 expression on dMφ following T. gondii infection. Subsequently, reduced expression of CD73 contribute to the downregulation of Arg-1 and IL-10 expression through adenosine A2a receptor (A2AR) / protein kinase A (PKA) / phosphorylated cAMP-response element binding protein (p-CREB) / CCAAT enhancer binding protein B (C/EBPβ) pathway.
conclusionsTgROP18 can significantly reduce CD73 expression on dMφ through LSD1/SNAIL1 pathway, subsequently leading to the decreased expression levels of Arg-1 and IL-10 via adenosine/A2AR/PKA/p-CREB/C/EBPβ pathway, which ultimately contributes to maternal-fetal tolerance dysfunction of dMφ.
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