The MIH61 monoclonal antibody specifically binds to TLT-2 (TREM-like transcript 2 protein) which is also known as TREML2 (Triggering receptor expressed on myeloid cells-like 2). TLT-2 is a 33 kDa type I transmembrane protein that belongs to the TREM family. It consists of a single extra-cellular Ig-like V-type domain, a transmembrane segment and a cytoplasmic tail. TLT-2 is expressed on B cells, granulocytes, monocytes/macrophages and a fraction of peripheral blood T cells. TLT-2 expression on neutrophils and macrophage is reportedly upregulated in response to inflammatory conditions in vivo. TLT-2 plays important roles in innate and adaptive immunity. It acts as an engulfment receptor for apoptotic cells and can enhance the activation of T cells. The MIH61 antibody reportedly does not recognize mouse TLT-2.
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).