The HMα5-1 antibody specifically recognizes the α5 subunit of the integrin α5β1 fibronectin receptor (CD49e/CD29, VLA-5) on mouse thymocytes and a variety of mouse cell lines, including pre-B and non-lymphoid cells, but not on mouse splenic or lymph node cells. It also detects rat CD49e on the RBL2H3 basophilic leukemia cell line,peritoneal mast cells, and endothelium, but not on splenocytes. It has been reported that soluble mAb HMα5-1 partially inhibits in vitro binding of a mouse cell line and of rat mast cells to fibronectin and inhibits the enhanced degranulation of IgE-sensitized rat RBL cells induced on fibronectin-coated plates. It has also been observed that plate-bound HMα5-1 antibody enhances the degranulation of IgEsensitized rat RBL-2H3 cells and that subcutaneous injection of HMα5-1 mAb into rats, along with anti-CD49d and anti-CD61 antibodies, inhibits experimentally induced passive cutaneous anaphylaxis.
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.