Cell Line

CD155, commonly known as PVR (poliovirus receptor) and Necl-5 (nectin-like molecule-5), is a type I transmembrane single-span glycoprotein and belongs to the nectins and nectin-like (Necl) subfamily. CD155 was originally identified based on its ability to mediate the cell attachment and entry of poliovirus (PV), an etiologic agent of the central nervous system disease poliomyelitis. The normal cellular function is in the establishment of intercellular adherens junctions between epithelial cells. CD155 may assist in an efficient humoral immune response generated within the intestinal immune system. It’s been shown that CD155 can be recognized and bind by DNAM-1 and CD96, which promotes the adhension, migration, and NK-cell killing. Thus, inducing cell-mediated tumor-specific immunity.

This gene encodes a member of the TNF (tumor necrosis factor) receptor superfamily. The encoded protein functions in signal transduction pathways that activate inflammatory and inhibitory T-cell immune response. It binds herpes simplex virus (HSV) viral envelope glycoprotein D (gD), mediating its entry into cells. Alternative splicing results in multiple transcript variants

HVEM is found on the surface of various cell types, including hematopoietic and non-hematopoietic cells, and is expressed mainly in spleen, thymus, bone marrow, lung and intestines. It has been identified as a canonical TNF receptor, signaling through the TNF receptor-associated factors (TRAFs) leading to NFκB activation. Furthermore, in addition to acting as a signaling receptor, in binding to Ig superfamily members it acts as a ligand for these inhibitory receptors. Therefore, bidirectional signaling is possible for the HVEM-mediated signaling network, which can be involved in positive or negative immunological reactions under different contexts.

HVEM is found on the surface of various cell types, including hematopoietic and non-hematopoietic cells, and is expressed mainly in spleen, thymus, bone marrow, lung and intestines. It has been identified as a canonical TNF receptor, signaling through the TNF receptor-associated factors (TRAFs) leading to NFκB activation. Furthermore, in addition to acting as a signaling receptor, in binding to Ig superfamily members it acts as a ligand for these inhibitory receptors. Therefore, bidirectional signaling is possible for the HVEM-mediated signaling network, which can be involved in positive or negative immunological reactions under different contexts.

The protein encoded by this gene belongs to the CD28 and CTLA-4 cell-surface receptor family. ICOS (Inducible T-cell COStimulator) is expressed on activated T cells. It forms homodimers and plays an important role in cell-cell signaling, immune responses, and regulation of cell proliferation. It is thought to be important for Th2 cells in particular.

Killer cell immunoglobulin-like receptors (KIRs) are transmembrane glycoproteins expressed by natural killer cells and are subsets of T cells. The KIR proteins are classified by the number of extracellular immunoglobulin domains (2D or 3D) and by whether they have a long (L) or short (S) cytoplasmic domain. KIR proteins with the long cytoplasmic domain transduce inhibitory signals upon ligand binding via an immune tyrosine-based inhibitory motif (ITIM), while KIR proteins with the short cytoplasmic domain lack the ITIM motif and instead associate with the TYRO protein tyrosine kinase binding protein to transduce activating signals. The ligands for several KIR proteins are subsets of HLA class I molecules; thus, KIR proteins are thought to play an important role in regulation of the immune response.

Ligand for the T-cell-specific cell surface receptor ICOS acts as a costimulatory signal for T-cell proliferation and cytokine secretion. It also induces B-cell proliferation and differentiation into plasma cells. It could also play an important role in mediating local tissue responses to inflammatory conditions, as well as modulating the secondary immune response by co-stimulating memory T-cell function.

Recombinant CHO-K1 cells stably overexpress immunoglobulin gamma Fc region receptor II-a (FcγRIIa / CD32A 131Arg). The surface expression of CD32A 131Arg is validated by FACS analysis. This stable cell line product is designed for measuring binding affinity and stability of antibody based biologics binding with CD32A 131Arg. GenScript offers both CD32A 131Arg stable cell line and CD32A 131His stable cell line (Cat. No. M00589) for FcγRIIa polymorphism study.

Claudins are a family of proteins, which play a role in maintaining tight cell junctions. Differentclaudin subtypes are expressed on different tissues.Claudin 18 isoform 2 (CLDN18.2) expressionin normal tissues is restricted to cells of the gastric mucosa and is absent from other healthytissues However, CLDN 18.2 is expressed in 70% of primary gastric adenocarcinomas and itsmetastases (101). It has also been shown to be expressed in a number of other cancers,including pancreatic (50%), esophagus (30%) and NSCLC (25%)The restricted expressionmakes it a potential drug target for the treatment of gastric and pancreatic adenocarcinoma, asevidenced by efforts to target CLDN18.2 via naked antibody and CAR-T modalities.