The BU63 monoclonal antibody specifically recognizes CD86 which is also known as B70, B7-2, B7.2, LAB72 or CD28LG2. CD86 is a ~70-80 kDa type I transmembrane glycoprotein that belongs to the Ig gene superfamily. CD86 is expressed on monocytes, dendritic cells, Langerhans cells, activated B cells, and memory B cells. Like CD80 (B7-1), CD86 serves as a ligand for CD28 or CD152 (CTLA-4) expressed by T cells and can induce costimulatory or coinhibitory signals, respectively. The BU63 antibody can reportedly block the binding of other human CD86-specific antibodies including the 2331 (FUN-1) (complete block) or IT2.2 (partial block) antibodies. These results suggest that the BU63 antibody may bind to a similar or identical CD86 epitope as the 2331 (FUN-1) antibody but to a different, although spatially-related epitope compared with the IT2.2 antibody.
The antibody was conjugated to an oligonucleotide that contains an antibody clone-specific barcode (ABC) flanked by a poly-A tail on the 3' end and a PCR handle (PCR primer binding site) on the 5' end. The ABC for this antibody was designed to be used with other BD AbSeq oligonucleotides conjugated to other antibodies. All AbSeq ABC sequences were selected in silico to be unique from human and mouse genomes, have low predicted secondary structure, and have high Hamming distance within the BD AbSeq portfolio, to allow for sequencing error correction and unique mapping. The poly-A tail of the oligonucleotide allows the ABC to be captured by the BD Rhapsody™ system. The 5' PCR handle allows for efficient sequencing library generation for Illumina sequencing platforms.
NOTE: The BD Rhapsody Single-Cell Analysis System must be used with the BD Rhapsody Express Instrument.