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- W3162931043 abstract "Abstract BackgroundPreeclampsia is a unique multisystem disorder that affects 5-8% of pregnancies. A high level of soluble fms-like tyrosine kinase-1 (sFlt-1) is a hallmark of preeclampsia that causes endothelial dysfunction. Exosomes derived from mesenchymal stem cells (MSCs) have been indicated to improve endothelial performances by transporting signals to target cells. We hypothesized that exosomes derived from MSCs have potential effects against preeclampsia. MethodsWe collected human umbilical cord MSC-derived exosomes (HUCMSC-exos) by ultracentrifugation. The size and morphology of the exosomes were examined using a transmission electron microscope and nanoparticle tracking analysis. Pregnant mice were injected with murine sFlt-1 adenovirus to build the preeclampsia-like mouse model and then treated with HUCMSC-exos. Human umbilical vein endothelial cells (HUVECs) were infected with lentiviruses expressing tet-on-sFlt-1 to obtain cells overexpressing sFlt-1. Cell proliferation and migration assays were used to measure the endothelial functions. The exosomes enriched proteins underlying mechanisms were explored by proteomic analysis.ResultsIn the current study, we successfully collected the cup-shaped HUCMSC-exos with diameters of 30-150 nm. In the sFlt-1-induced preeclampsia mouse model, HUCMSC-exos exhibited beneficial effects on adverse birth events by decreasing blood pressure and improving fetal birth weight. In addition, preeclamptic dams that were injected with HUCMSC-exos had rebuilt dense placental vascular networks. Furthermore, we observed that HUCMSC-exos partially rescued sFlt-1-induced HUVECs dysfunction in vitro . Proteomics analysis of HUCMSC-exos displayed functional enrichment in biological processes related to vesicle-mediated transport, cell communication, cell migration, and angiogenesis.ConclusionWe propose that exosomes derived from HUCMSCs play beneficial roles in the birth outcomes of sFlt-1-induced preeclamptic mice by promoting angiogenesis." @default.
- W3162931043 created "2021-05-24" @default.
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- W3162931043 date "2021-05-05" @default.
- W3162931043 modified "2023-10-01" @default.
- W3162931043 title "Human Umbilical Cord Mesenchymal Stem Cell (HUCMSC)-derived Exosomes as a Cell-Free Therapy for Soluble Fms-like Tyrosine Kinase-1 (Sflt-1)-induced Endothelial Dysfunction in Preeclampsia" @default.
- W3162931043 doi "https://doi.org/10.21203/rs.3.rs-455719/v1" @default.
- W3162931043 hasPublicationYear "2021" @default.
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