10 µm magnetic beads (Millipore) were coupled with 100 µg ml−1 biotinylated anti-PSMA antibody (clone LNI-17, BioLegend) for 1hour at room temperature with gentle agitation. EV capture was performed overnight at room temperature with rotation. For staining, EV-coated beads were blocked with Fc Block in a saline buffer containing 5 mg ml−1 casein, 25 mM Tris and 150 mM NaCl at pH7.4, and then PE-conjugated anti-PSMA was added at 10 µg ml−1 in same buffer for 15 min.
Copyright and License information: This work was authored as part of the Contributor’s official duties as an Employee of the United States Government and is therefore a work of the United States Government. In accordance with ©17 U.S.C. ©105, no copyright protection is available for such works under U.S. Law. This is an Open Access article that has been identified as being free of known restrictions under copyright law, including all related and neighboring rights (https://creativecommons.org/publicdomain/mark/1.0/). You can copy, modify, distribute and perform the work, even for commercial purposes, all without asking permission.
Do you have any questions about this protocol?
Post your question to gather feedback from the community. We will also invite the authors of this
article to respond.