Programmed cell death 1 ligand 1 (PD-L1) is a member of the B7 super family, once named B7-H1 and CD274 . It is a type I transmembrane glycoprotein that can be widely expressed and activated The surface of T cells, B cells, macrophages, and dendritic cells. At the same time, it is also expressed in some immune shielding parts of the body such as placenta, eyes, epithelium, muscle, liver, vascular endothelial cells and other tissues. Studies have shown that PD-L1 is overexpressed in most cancer tissues, including NSCLC, melanoma, breast cancer, glioma, and lymphoma. And high expression of PD-L1 can inhibit RAS and PI3K / AKT and inhibit T cell proliferation or induce cell signaling pathways like CTL apoptosis; may be reduced by mTOR, AKT, S6 and ERK2 phosphorylation and regulation of PTEN promoting Induces the production of Treg , and then inhibits the activity of effector T cells. This product is a PDL1-FC recombinant protein (FC tag can be removed by enterokinase), which can be used for monoclonal antibody screening or antibody function verification.

Product name: Recombinant human PD-L1 protein

Species: Human origin

Gene sequence number: NP_054862.1

Tags: Human-Fc Tag

Tag site : C- terminal

Restriction site: enterokinase

Expression area: extracellular segment（19-238AA）

Host cell: CHO-S

Purity:> 90%

Purification method: Protein A column

Preservation system: PBS +20% glycerol

Storage conditions: -80℃

Illustration: Lane M on the left is the protein MW marker, Lane 1 is the 10ug PD-L1-Fc protein;

The right image shows the FACS detection of the binding of PD-L1-FC protein to CHO-K1 overexpressing PD-1