Extracellular Vesicles-mediated recombinant IL-10 protects against ascending infection-associated preterm birth by reducing fetal inflammatory response
نویسندگان
چکیده
Background Fetal inflammatory response mediated by the influx of immune cells and activation pro-inflammatory transcription factor NF-κB in feto-maternal uterine tissues is major determinant infection-associated preterm birth (PTB, live births < 37 weeks gestation). Objective To reduce incidence PTB minimizing inflammation, extracellular vesicles (EVs) were electroporetically engineered to contain anti-inflammatory cytokine interleukin (IL)-10 (eIL-10), their efficacy was tested an ascending model infection (vaginal administration E. coli ) induced mouse models. Study design EVs (size: 30-170 nm) derived from HEK293T electroporated with recombinant IL-10 at 500 volts 125 Ω, 6 pulses generate eIL-10. eIL-10 structural characters (electron microscopy, nanoparticle tracking analysis, ExoView [size cargo content] functional properties (co-treatment macrophage LPS eIL-10) assessed. test efficacy, CD1 mice vaginally inoculated (10 10 CFU) subsequently treated either PBS, (500ng) or Gentamicin (10mg/kg) a combination eIL-10+gentamicin. maternal fetal after treatment conducted suspension Cytometer Time Flight (CyTOF) using transgenic that express red fluorescent TdTomato (mT+) cells. Results Engineered structurally functionally stable showed reduced proinflammatory production challenged vitro . Maternal µg/kg body weight) crossed barriers delay -induced deliver pups term. Delay associated inflammation (immune cell infiltration histologic chorioamnionitis, activation, production). Conclusions safe, stable, specific, delayed over 72 hrs delivered pups. The delivery drugs overcomes limitations in-utero interventions. Protecting eliminates need for amniotic its efficacy.
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ژورنال
عنوان ژورنال: Frontiers in Immunology
سال: 2023
ISSN: ['1664-3224']
DOI: https://doi.org/10.3389/fimmu.2023.1196453