The 8D7 monoclonal antibody recognizes Asialoglycoprotein receptor 1 (ASGPR 1), also known as Hepatic lectin H1 (HL-1). ASGPR 1 is an approximately 42 kDA type II integral membrane protein that is expressed on the surface of hepatic cells. It is expressed by hepatocytes on the sinusoidal-lateral plasma membrane but not on the bile canalicular membrane. ASGPR 1 plays a role in serum glycoprotein homeostasis. It functions as a subunit of the Asialoglycoprotein receptor (ASGPR) complex that binds, internalizes, and transports various glycoproteins for lysosomal degradation. The receptor may also promote hepatic infection by the binding and uptake of various viruses. The immunogen used to generate the 8D7 hybridoma was rat liver membrane extracts. Rat ASGPR consists of three polypeptide subunits (Rat hepatic lectin 1-3 (RHL1-3). The 8D7 antibody has been shown to react with a subunit-specific epitope on RHL-1. Clone 8D7 cross-reacts with human ASGPR 1.
The antibody was conjugated to BD Horizon Red 718, which has been developed exclusively for BD Biosciences as a better alternative to Alexa Fluor® 700. BD Horizon Red 718 can be excited by the red laser (628 – 640 nm) and, with an Em Max around 718 nm, it can be detected using a 730/45 nm filter. Due to similar excitation and emission properties, we do not recommend using R718 in combination with APC-R700 or Alexa Fluor® 700.