Biochemical characteristic of brain-derived
EVs separated from
frozen mouse brain tissue. (A) NTA plot of average size and concentration
of particles from brain homogenates and separated EV fraction. The
black line shows the fitting curve. The red line represents the error
bar. The y axis is the concentration of particles.
The x axis is the size of particles. Top: brain homogenates,
bottom: separated EV fraction. (B) Ratio of particles to protein concentration
to quantify particle purity (p = 0.005 by a paired
sample Wilcoxon test). (C) Assessment of EV and non-EV marker proteins,
including TSG101, CD9, CD63, CD81, GM130 (Golgi marker), and CYC1
(Mitochondrial marker), in the separated EV fraction. (D) Transmission
electron microscopy (TEM) image of mouse brain-derived EV fraction.
Scale bar: 100 nm.