The 10D5 monoclonal antibody specifically recognizes Integrin alpha v beta 6 (αvβ6) that is also known as CD51/β6. This heterodimeric receptor is comprised of transmembrane type I alpha and beta chain glycoproteins that are encoded by ITGAV (integrin subunit alpha) and ITGB6 (integrin subunit beta 6), respectively. Like other integrins, αvβ6 serves as a transmembrane adhesion receptor that can tether the intracellular cytoskeleton to the extracellular matrix (ECM) by binding to R-G-D sequences of ECM protein ligands including fibronectin, vitronectin, and tenascin. Integrin αvβ6 likewise plays a key role in the activation of transforming growth factor beta-1 (TGFβ1) by its R-G-D-dependent release of TGFβ1 from regulatory Latency-associated peptide (LAP). Some viruses, such as. Coxsackieviruses and Herpes simplex virus-1 use Integrin αvβ6 as a receptor to infect cells. Integrin αvβ6 engages in bidirectional signaling, ie, outside-in and inside-out signaling, to regulate essential cellular functions. These include adhesion, migration, polarization, differentiation, and proliferation that are crucial to tissue homeostasis. Although not normally expressed on adult epithelial cells/keratinocytes, its expression is upregulated on these cells during the course of embryonic development, inflammation, tissue injury, wound healing, as well as malignant transformation. The 10D5 antibody blocks Integrin αvβ6-dependent cellular adhesion and migration and reportedly recognizes both human and mouse αvβ6 integrins. Binding of 10D5 antibody to αvβ6 is divalent-cation dependent.
The antibody was conjugated to BD Horizon BUV615 which is part of the BD Horizon Brilliant™ Ultraviolet family of dyes. This dye is a tandem fluorochrome with an Ex Max near 350 nm and an Em Max near 615 nm. BD Horizon Brilliant BUV615 can be excited by the ultraviolet laser (355 nm) and detected with a 610/20 filter and a 595 nm LP. Due to the excitation of the acceptor dye by the blue/yellow-green laser line, there may be significant spillover into channels detecting PE-CF594 like emissions (eg, 610/20-nm filter).