The 90220 monoclonal antibody specifically binds to the beta subunit (IL-10R beta/IL-10RB/IL-10Rβ) of the heteromeric IL-10 Receptor complex. This type I transmembrane glycoprotein is also known as, subunit 2 (IL-10R2) or CD210b. The IL-10 Receptor complex is formed by the binding of dimeric IL-10 to two cell surface alpha subunits of the IL-10 Receptor (CD210a/IL-10RA/IL-10Rα). This complex can then recruit two CD210b subunits resulting in the transduction of intracellular JAK/STAT pathway signals. CD210b is also a component of cytokine receptor complexes specific for IL-22, IL-26, IL-28 and IL-29. CD210b is expressed by a variety of cell types including T cells, B cells, NK cells, monocytes and macrophages.
The antibody was conjugated to BD Horizon BUV661 which is part of the BD Horizon Brilliant™ Ultraviolet family of dyes. This dye is a tandem fluorochrome of BD Horizon BUV395 with an Ex Max of 348-nm and an acceptor dye with an Em Max at 661-nm. BD Horizon Brilliant BUV661 can be excited by the ultraviolet laser (355 nm) and detected with a 670/25 filter and a 630 nm LP. Due to cross laser excitation of this dye, there may be significant spillover into channels detecting APC-like emissions (eg, 670/25-nm filter).