ArticleBiological research2024
Maternal stress during pregnancy alters circulating small extracellular vesicles and enhances their targeting to the placenta and fetus.
Article in Biological research, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.
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Who cites it
5 citing papers in PubMed.
- Prenatal road traffic noise impairs early testicular development in Sprague-Dawley offspring: pharmacological rescue by melatonin and edaravone; developmental preservation by environmental enrichment.Naunyn-Schmiedeberg's archives of pharmacology · 2026Article
- Understanding Intracellular Transport Impairments in Maternal Protein Restriction: A Scoping Review of DOHaD-Driven Cellular Biology Perspective.Cell biochemistry and biophysics · 2026Article
- Investigating milk-derived extracellular vesicles as mediators of maternal stress and environmental intervention.Molecular psychiatry · 2026Article
- Investigating milk-derived extracellular vesicles as mediators of maternal stress and environmental intervention.bioRxiv : the preprint server for biology · 2025Article
- Exosomes as Biomarkers and Therapeutic Agents in Neurodegenerative Diseases: Current Insights and Future Directions.Molecular neurobiology · 2025Review
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Authors and funding
15 authors.
Funding
Abstract
backgroundMaternal psychological distress during pregnancy can negatively impact fetal development, resulting in long-lasting consequences for the offspring. These effects show a sex bias. The mechanisms whereby prenatal stress induces functional and/or structural changes in the placental-fetal unit remain poorly understood. Maternal circulating small extracellular vesicles (sEVs) are good candidates to act as "stress signals" in mother-to-fetus communication. Using a repetitive restraint-based rat model of prenatal stress, we examined circulating maternal sEVs under stress conditions and tested whether they could target placental-fetal tissues.
resultsOur mild chronic maternal stress during pregnancy paradigm induced anhedonic-like behavior in pregnant dams and led to intrauterine growth restriction (IUGR), particularly in male fetuses and placentas. The concentration and cargo of maternal circulating sEVs changed under stress conditions. Specifically, there was a significant reduction in neuron-enriched proteins and a significant increase in astrocyte-enriched proteins in blood-borne sEVs from stressed dams. To study the effect of repetitive restraint stress on the biodistribution of maternal circulating sEVs in the fetoplacental unit, sEVs from pregnant dams exposed to stress or control protocol were labeled with DiR fluorescent die and injected into pregnant females previously exposed to control or stress protocol. Remarkably, maternal circulating sEVs target placental/fetal tissues and, under stress conditions, fetal tissues are more receptive to sEVs.
conclusionOur results suggest that maternal circulating sEVs can act as novel mediators/modulators of mother-to-fetus stress communication. Further studies are needed to identify placental/fetal cellular targets of maternal sEVs and characterize their contribution to stress-induced sex-specific placental and fetal changes.
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