Antiaging Properties of Exosomes from Adipose-Derived Mesenchymal Stem Cells in Photoaged Rat Skin

Figure 1

Morphological observation and characterization of ADSCs cultured in vitro. (a) Flow cytometry labeling of surface markers showed positive expression of CD29, CD90, and CD105 with positive rates of 99.98%, 99.5%, and 99.75%, respectively. CD34, CD45, and human leukocyte antigen-DR expression was negative with expression rates of 2.32%, 1.89%, and 2.34%, respectively. (b) After adipogenic induction, P3 cells were stained with Oil Red O, and oil droplet-like adipose tissue was observed by microscopy. After osteogenic induction, Alizarin Red staining showed that aggregated bone tissue was stained red in microscopy analysis.

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