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| Home > Publications database > Lipid droplets and small extracellular vesicles: More than two independent entities. |
| Journal Article | DKFZ-2024-01847 |
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2024
Wiley
Hoboken, New Jersey
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Please use a persistent id in citations: doi:10.1002/jex2.162
Abstract: Despite increasing knowledge about small extracellular vesicle (sEV) composition and functions in cell-cell communication, the mechanism behind their biogenesis remains unclear. Here, we reveal for the first time that sEV biogenesis and release into the microenvironment are tightly connected with another important organelle, Lipid Droplets (LDs). The correlation was observed in several human cancer cell lines as well as patient-derived colorectal cancer stem cells (CR-CSCs). Our results demonstrated that external stimuli such as radiation, pH, hypoxia or lipid-interfering drugs, known to affect the number of LDs/cell, similarly influenced sEV secretion. Importantly, through multiple omics data, at both mRNA and protein levels, we revealed RAB5C as a potential important molecular player behind this organelle connection. Altogether, the potential to fine-tune sEV biogenesis by targeting LDs could significantly impact the amount, cargos and properties of these sEVs, opening new clinical perspectives.
Keyword(s): Rab ; exosomes ; hypoxia ; iron metabolism ; irradiation ; lipid droplets ; pH ; small extracellular vesicles
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