Abstract
Pre-eclampsia (PE) is a disorder of pregnancy characterized by proteinuria and high blood pressure, affecting 2–8% of pregnancies worldwide. Previous studies have shown that PE is closely associated with trophoblast cell dysfunction. Here, we investigated the role of tissue factor pathway inhibitor-2 (TFPI-2) in regulating the biological processes of trophoblast cells. The TFPI-2 levels in plasma samples and placental tissues were tested by ELISA, immunohistochemistry, qRT-PCR, and western blot. HTR8/Svneo cell line was used to simulate the primary trophoblast cells and H/R culture was applied to mimic the oxidative stress state of PE. MTT assay, Annexin V/propidium iodide (PI) apoptosis assay, and transwell assay were used to determine the cell proliferation, apoptosis, and invasion. The expression levels of matrix metalloproteinases (MMPs) were evaluated by western blot. The expression of TFPI-2 was remarkably up-regulated in both the serum and placenta of PE patients. Hypoxia/reoxygenation increased the expression of TFPI-2 in HTR‐8/SVneo cell line. TFPI-2 promoted that cell proliferation and inhibited the cell apoptosis of HTR8/SVneo cells in H/R condition. In addition, downregulation of TFPI-2 increased the cell invasion and the expression of MMP2 and MMP9. This study reveals that TFPI-2 plays a crucial role in monitoring the biological function of trophoblast cells, which might provide theoretical basis and therapeutic targets for the treatment of PE.
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The study was supported by the Hebei Science and Technology Support Project (17277739D).
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Zheng, L., Huang, J., Su, Y. et al. Overexpression of tissue factor pathway inhibitor 2 attenuates trophoblast proliferation and invasion in preeclampsia. Human Cell 33, 512–520 (2020). https://doi.org/10.1007/s13577-020-00322-0
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DOI: https://doi.org/10.1007/s13577-020-00322-0