Abstract

miR-206a can directly target and regulate hypoxia-inducible factor, playing a role in inflammation and immune response. This study explored the effect of miR-206a using magnetic ferric oxide particles as a carrier to directly target and regulate HIF on immune clearance mechanism for pelvic peritonitis. A rat model of pelvic peritonitis was constructed and divided into NC group, NC group, Fe3O4 nanoparticle group, Fe3O4-miR-206a group, miR-206a gene knockout group, 740Y-P group, BKM120 group, Fe3O4-miR-206a+BKM120 group, PHD group, BAY 87-2243 group, Fe3O4-miR-206a+PHD group, 740Y-P+PHD group, BKM120+PHD group, and Fe3O4-miR-206a+BKM120+PHD group. We then detected serum C-Reactive protein (CRP), TNF-α and IL-6 levels, T lymphocyte, and miR-206a expression. HIF, TNF, IL-1, and IL-6 protein expressions were also detected. A rat model for pelvic peritonitis was also established, and magnetic ferric oxide particles carrying miR-206a nanocomplexes were successfully prepared. Levels of TNF-α, IL-6 and CRP were reduced under intervention by Fe3O4-miR-206a, and blood flow was reduced. All chemical indicators were reduced, and inflammatory response was significantly improved. After knocking out the miR-206a, the opposite results were observed. This study findings show that, miR-206a can directly target and regulate HIF to inhibit PI3K/Akt signaling pathway using magnetic ferric oxide particles as a carrier, thereby improving the immune clearance ability for patients with pelvic peritonitis, reducing inflammatory reactions, and thus improving prognosis. In addition, this research not only provides a new direction for management of inflammatory diseases, but also serves as a reference for treatment of immune diseases. Therefore, direct targeting and regulating HIF by miR-206a using magnetic ferric oxide particles as a carrier can become an effective strategy for the treatment of inflammatory and immune-related diseases.

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