Abstract
Exosomes have received much attention as biomarkers for the diagnosis and treatment of various diseases such as diabetic cardiomyopathy and cancer. However, it remains an important challenge to quickly and precisely isolate and detect exosomes from various body fluids. Therefore, we selectively separated exosomes using anti-CD63 antibody-conjugated magnetic nanoparticles (anti-CD63 Ab-MNPs). And, to detect the exosomes optically, an aptamer-conjugated PDA liposome (Apt-PDA) was developed to target EpCAM overexpressed on the surface of cancer-derived exosome. The isolated exosomes were detected through the colorimetric change and the red fluorescence of PDA. We demonstrated simultaneous separation and detection of exosomes by anti-CD63 Ab-MNPs and anti-EpCAM Apt-PDA.
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