Umbilical cord mesenchymal stem cell-derived exosome (UC-MSC-Exo)

Umbilical cord mesenchymal stem cell-derived exosomes (UC-MSC-Exos) are nano-sized extracellular vesicles, typically 30 to 150 nm in diameter, that are secreted by mesenchymal stem cells harvested from the umbilical cord [1, 2]. They function as critical mediators of intercellular communication by transporting a complex cargo of proteins, lipids, and various RNA species, including microRNAs and mRNAs, to recipient cells [4, 5]. These exosomes exhibit potent immunomodulatory, anti-inflammatory, and regenerative properties, making them a promising cell-free alternative to traditional stem cell therapies [6, 12]. In disease contexts, UC-MSC-Exos have demonstrated efficacy in promoting tissue repair and reducing inflammation in conditions such as acute respiratory distress syndrome (ARDS), liver fibrosis, and chronic wound healing [3, 13, 14]. While they are not a single molecular target, they are being extensively researched as both therapeutic agents and delivery vehicles for targeted drug delivery [17, 18]. Their clinical application is currently being explored in trials for conditions ranging from COVID-19-related lung injury to atrophic acne scars [13, 15].

Other names

hUC-MSC-ExosUmbilical cord mesenchymal stem cell-derived extracellular vesiclesUC-MSC-EVshUC-MSC-derived exosomesHuman umbilical cord mesenchymal stem cell-derived exosomes

UC-MSC-Exos function through paracrine signaling by transferring bioactive cargo, including microRNAs, proteins, and lipids, to recipient cells, thereby modulating intracellular signaling pathways such as Wnt/beta-catenin, TGF-beta/Smad, and AKT/mTOR to promote tissue repair and suppress inflammatory responses [2, 3, 5, 7].