The HTF-1 monoclonal antibody specifically binds to CD142. CD142 is a 45-47 kDa, single chain, type I transmembrane glycoprotein also known as Tissue Factor (TF). CD142 has been referred in the literature as coagulation Factor III or thromboplastin and it is expressed on activated endothelial cells and lipopolysaccharide (LPS)-stimulated monocytes/macrophages. TF associates with factor VIIa to form a complex and acts as an enzyme that initiates the blood coagulation cascade. It is known as the major initiator of clotting in normal hemostasis. CD142 can be induced by various inflammatory mediators in monocytes and vascular endothelial cells. This antibody is useful in inflammation, thrombosis and hemostasis research.
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).
Due to spectral differences between labeled cells and beads, using BD™ CompBeads can result in incorrect spillover values when used with BD Horizon BUV661 reagents. Therefore, the use of BD CompBeads or BD CompBeads Plus to determine spillover values for these reagents is not recommended. Different BUV661 reagents (eg, CD4 vs. CD45) can have slightly different fluorescence spillover therefore, it may also be necessary to use clone-specific compensation controls when using these reagents.