Journal: bioRxiv
Article Title: Matrix stiffness and stress relaxation regulate matrix-bound nanovesicle release from alginate hydrogels
doi: 10.64898/2026.05.28.728372
Figure Lengend Snippet: (A) Schematic depiction of MBV isolation procedure from in vitro dermal fibroblast cultures. (B) Nanoparticle tracking analysis of diluted MBVs (1:10,000) measures particle size distribution and concentration. (C) Transmission electron micrograph of MBVs reveals vesicle-like morphology. (D) Western blot analysis of Alix (∼100kDa), Integrin β1 (∼100-130 kDa), and CD63 (∼35-55 kDa) expression in MBVs and dermal fibroblast cell lysate. (E) Fluorescence and scanning electron microscopy images of fast-relaxing and slow-relaxing alginate hydrogels with and without MBVs. Top: 5kPa hydrogels encapsulating CFSE-labeled MBVs, * denotes region outside of hydrogel. Bottom: 20kPa hydrogels encapsulating unlabeled MBVs.
Article Snippet: Primary adult human dermal fibroblasts (41-year-old female donor, American Type Culture Collection, PCS-201-012) were acquired at passage 1.
Techniques: Isolation, In Vitro, Concentration Assay, Transmission Assay, Western Blot, Expressing, Fluorescence, Electron Microscopy, Labeling