Cloudberry-derived nanovesicles: in vitro functional effects in skin cell models and characterization of molecular cargo
Mammadova, R.; Pratiwi, F. W.; Laezza, C.; Shanthi, K. B.; Papp, D.; Sirignano, C.; Madubhashani, D.; Rigano, M. M.; Schlosser, G.; Vainio, S. J.
Show abstract
Cloudberry (Rubus chamaemorus L.)-derived nanovesicles (NVs) represent a promising but still poorly characterized class of plant-derived vesicles with potential relevance for skin-related applications. Here, we isolated cloudberry fruit-derived NVs and investigated their physicochemical and molecular properties, cellular uptake, cytocompatibility, and functional effects in human dermal fibroblasts (HDF) and HaCaT keratinocytes. Nanoparticle tracking analysis and transmission electron microscopy confirmed a nanosized vesicle preparation with characteristic round morphology, while protein quantification supported reproducible isolation of NV-associated material. In vitro, cloudberry NVs showed concentration-dependent effects on cell viability and proliferation, with lower doses being better tolerated. Labelled NVs were internalized by both HDF and HaCaT cells in a time-dependent manner. Under oxidative stress conditions, cloudberry NVs reduced H2O2-induced senescence-associated {beta}-galactosidase staining in HDFs and exerted cytoprotective effects in both cell lines, alongside measurable cell-free antioxidant activity in the DPPH assay. In scratch wound-healing assays, cloudberry NVs modulated wound closure in a dose-dependent manner, with the lowest tested concentration showing the most favorable response. UHPLC-MS/MS-based proteomics and metabolomics further indicated the presence of diverse secondary metabolites and stress-related protein cargo. Together, these results support the view that cloudberry-derived NVs are biologically active plant nanovesicles with potential utility in skin-related regenerative applications. Graphical Abstract O_FIG O_LINKSMALLFIG WIDTH=200 HEIGHT=126 SRC="FIGDIR/small/741293v1_ufig1.gif" ALT="Figure 1"> View larger version (36K): org.highwire.dtl.DTLVardef@c9094dorg.highwire.dtl.DTLVardef@81a1b5org.highwire.dtl.DTLVardef@9fafe2org.highwire.dtl.DTLVardef@1d421d3_HPS_FORMAT_FIGEXP M_FIG C_FIG
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