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LPS-mediated activation of TLR4 controls Toxoplasma gondii growth in human trophoblast cell (BeWo) and human villous explants in a dependent-manner of TRIF, MyD88, NF-κB and cytokines.
- Source :
-
Tissue & cell [Tissue Cell] 2022 Oct; Vol. 78, pp. 101907. Date of Electronic Publication: 2022 Aug 25. - Publication Year :
- 2022
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Abstract
- We evaluated the influence of the Toll-like receptor (TLR)-4 pathways on BeWo, JEG-3 and HTR-8/SVneo cells, as well as in human villous explants infected with Toxoplasma gondii. Cells and explants were stimulated with LPS for 24 or 48 h and processed for the MTT assay, and expression of TLR4 was evaluated by confocal microscopy. In addition, we used peptides that inhibit MyD88 or TRIF, and inhibitor to NF-κB. Finally, the parasite proliferation was verified, and ELISA was performed to verify the cytokine production. As results, LPS did not induce toxicity in cells and explants. However, LPS triggered a reduction in T. gondii proliferation only in BeWo cells and explants. Additionally, LPS downmodulated IL-10, TGF-β1 and TNF, but upregulated IFN-γ in BeWo cells. For explants, LPS induced high levels of IL-10, TGF-β1 and IFN-γ. Finally, it was observed that the inhibition of TRIF and NF-κB increased parasitism and modulated TGF-β1 in BeWo cells, while the inhibition of MyD88 and NF-κB increased T. gondii infection and modulated IFN-γ in explants. It can be concluded that the TLR4 pathway is important for the control of T. gondii replication in BeWo cells and villous explants, in a dependent-manner of TRIF, MyD88, NF-κB and cytokines.<br />Competing Interests: Conflict of Interest Statement The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest.<br /> (Published by Elsevier Ltd.)
- Subjects :
- Adaptor Proteins, Signal Transducing metabolism
Adaptor Proteins, Vesicular Transport metabolism
Cell Line, Tumor
Cytokines metabolism
Humans
Interleukin-10 metabolism
Lipopolysaccharides pharmacology
Myeloid Differentiation Factor 88 metabolism
NF-kappa B metabolism
Toll-Like Receptor 4 metabolism
Transforming Growth Factor beta1 metabolism
Trophoblasts metabolism
Toxoplasma metabolism
Subjects
Details
- Language :
- English
- ISSN :
- 1532-3072
- Volume :
- 78
- Database :
- MEDLINE
- Journal :
- Tissue & cell
- Publication Type :
- Academic Journal
- Accession number :
- 36037656
- Full Text :
- https://doi.org/10.1016/j.tice.2022.101907