CD278 Mouse anti-Human, Brilliant Violet 650, Clone: DX29, BD
Mouse Monoclonal Antibody
Manufacturer: BD Biosciences 563832
The DX29 monoclonal antibody specifically binds to human CD278 which is also known as inducible costimulator (ICOS) and inducible T-cell co-stimulator. ICOS is a homodimeric type I transmembrane glycoprotein with an approximate molecular weight of 50-60 kDa. It is a member of the CD28 family and is highly expressed on activated T cells. CD278 is the receptor for ICOS-ligand (also known as CD275, B7-H2, B7RP-1, and LICOS). Like CD28, ICOS can provide a costimulatory signal for T cell activation, proliferation and cytokine production. It is not expressed on resting or activated B cells, monocytes, NK cells, granulocytes, dendritic cells or platelets. Unlike the constitutively expressed CD28, ICOS is de novo expressed upon cellular activation. Reports describe similarities between CD28 and ICOS in T cell activation, such as the costimulation of cytokine production. However, it has been suggested that ICOS may play a greater role in IL-10 production. In the presence of IL-10, purified recombinant human ICOS protein significantly increased in vitro B cell growth stimulated by pokeweed mitogen (PWM) and enhanced production of IgG.
The antibody was conjugated to BD Horizon BV650 which is part of the BD Horizon Brilliant Violet family of dyes. This dye is a tandem fluorochrome of BD Horizon BV421 with an Ex Max of 405-nm and an acceptor dye with an Em Max at 650-nm. BD Horizon BV650 can be excited by the violet laser and detected in a filter used to detect APC-like dyes (eg, 660/20-nm filter). Due to the excitation and emission characteristics of the acceptor dye, there will bespillover into the APC and Alexa Fluor 700 detectors. However, the spillover can be corrected through compensation as with any other dye combination.
|ICOS; DX-29; H4; Inducible T-cell costimulator; AILIM; CVID1|
|Activated human T cells|
|Store undiluted at 4°C and protected from prolonged exposure to light. Do not freeze.|
|Brilliant Violet 650|
|Aqueous buffered solution containing BSA and ≤0.09% sodium azide.|
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