Fig. 1

MSCs internalize AlPcS₄@FNPs nanoparticles without cytotoxic effect. Representative flow cytometry analysis of FNPs uptake at increasing doses (45, 90, 180 μg/mL) 24 h after 1 h-loading in MSCs (a) and cell cytotoxicity analysis (WST-1 assay) of MSCs exposed for 1 h to increasing concentrations of FNPs, AlPcS₄, or AlPcS₄@FNPs, at the end of incubation (day 0) and after 1, 2 and 6 days (b). All data are expressed as mean ± SD (n = 3)