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- W2070751410 abstract "During pregnancy, a complex cytokine network is present at the maternal-fetal interface in order to support normal growth and development of the placenta and fetus. HIV can frequently infect placental trophoblast but the impact of cytokines produced locally by the placenta and decidua on virus expression and replication is unknown. We comprehensively assayed the cytokines typically present in the placental microenvironment for their potential to modulate HIV transcriptional activation in the isolated trophoblast cells employing a transient transfection assay with luciferase as a reporter gene. Long terminal repeats (LTRs) of two divergent virus strains, HIV-1 LAI and HIV-1 NDK, were used to analyze virus-specific features. Four cytokines, epidermal growth factor (EGF), granulocyte-macrophage colony-stimulating factor (GM-CSF), interleukin 1β (IL-1β), and tumor necrosis factor α (TNF-α), were found to stimulate promoters of both viruses, whereas interferon α (IFN-α) and IFN-β were found to suppress the transcription driven from both promoters. The differences observed between the two viruses did not reach a statistically significant level. None of the remaining cytokines, including EGF; GM-CSF; insulin-like growth factor I (IGF-I); IFN-α, IFN-β, and IFN-γ; IL-1α, IL-1β, IL-2, IL-6, and IL-10; leukemia inhibitory factor (LIF); macrophage colony-stimulating factor (M-CSF); platelet-derived growth factor BB (PDGF-BB); transforming growth factor β (TGF-β); and TNF-α, affected transcriptional expression of the promoter constructs. Our results demonstrate that the local balance of cytokines may be critical for activation of HIV in the syncytiotrophoblast-cytotrophoblast layer and thus play an important role in the transmission of virus across the placental barrier." @default.
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- W2070751410 date "2002-08-20" @default.
- W2070751410 modified "2023-10-12" @default.
- W2070751410 title "Role of Placental Cytokines in Transcriptional Modulation of HIV Type 1 in the Isolated Villous Trophoblast" @default.
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- W2070751410 doi "https://doi.org/10.1089/08892220260190317" @default.
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