Abstract
We investigated the pathogenesis of recurrent spontaneous abortion (RSA) and evaluated the therapeutic effect of Pill Nourishing Kidney and Fetus (PNKF). A sensitive DNA sensor was used to detect miR-93 expression and vascular endothelial growth factor receptor 2 (VEGFR2). We testing the penetration capacity and physicochemical properties of the DNA sensor and found that the sensor had higher penetration and good stability and effectively detected miR-93 and VEGFR2 at different reaction temperatures and mediums with similar fluorescence signals. The sensor detected higher miR-93 expression, increased apoptosis, and negative regulation of VEGFR2 in patients with RSA. Treatment with PNKF of cultured trophoblast cells collected from patients with RSA were treated with PNKF significantly inhibited trophoblast cell apoptosis and promoted trophoblast cell proliferation by reducing miR-93 expression and promoting VEGFR2 expression. In conclusion, PNKF can improve the proliferation and inhibit apoptosis of trophoblast cells by suppressing miR-93 and promoting VEGFR2. Furthermore, the miR-93/VEGFR2 sensor demonstrated high sensitivity that has potential applications in clinical practice.
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