Journal: Future Science OA
Article Title: The potential of plant-derived exosome-like nanovesicles from Centella asiatica leaves (CA-PDENs) for anti-inflammation and prevention of UVB-induced photoaging
doi: 10.1080/20565623.2026.2654777
Figure Lengend Snippet: Results of antioxidant and pro-collagen effects of CA-PDENs. (A) Graphical depiction of DPPH radical scavenging activity of CA-PDENs and vitamin C within the concentration of 6.25-400 µg/mL, data are presented as mean ± standard deviation (n = 3). (B) Fluorescence intensity in UVB-induced 1BR3 cells represents the level of intracellular ROS after CA-PDENs treatment for 24 hours; data are presented as mean ± standard deviation (n = 3). *p < 0.05, **p-value < 0.01 vs. negative control. (C) Confocal microscopy images showing collagen type I expression in 1BR3 cells after 6 hours of CA-PDENs incubation at the concentrations of 40 and 100 µg/mL (200× magnification). Nuclei were stained with DAPI (blue), while collagen type 1 was labeled with Alexa Fluor 647 (red). Merged images show the localization of collagen type 1 expression in the cytoplasmic region surrounding the nuclei. (D) Collagen type I levels in UVB-induced 1BR3 cells followed by CA-PDENs incubation at 40 and 100 µg/mL for 48 hours, data are presented as mean ± standard deviation (n = 3). **p-value < 0.01 vs. control. Abbreviations: CA-PDENs, Centella asiatica -derived exosome-like nanovesicles; DPPH, 2,2-diphenyl-1-picrylhydrazyl; ROS, reactive oxygen species; UVB, ultraviolet B; DAPI, 4′,6-diamidino-2-phenylindole.
Article Snippet: Cells were incubated overnight at 4 °C with a mouse anti-collagen type I primary antibody (1:500 in 1% BSA; Invitrogen, USA), followed by incubation with an Alexa Fluor 647-conjugated goat anti-mouse IgG secondary antibody (1:500 in 1% BSA; Abcam, USA) for 60 minutes in the dark.
Techniques: Activity Assay, Concentration Assay, Standard Deviation, Fluorescence, Negative Control, Confocal Microscopy, Expressing, Incubation, Staining, Labeling, Control, Derivative Assay