2e5 of transient transfected anti- CD276 ScFv CAR-293 cells were stained with 0.01ug FITC-Labeled B7-H3/CD276 Fc Chimera Protein, Human, (Cat. No. UA011268) and unlable respectively (Fig. C and B), and non-transfected 293 cells were used as a control (Fig. A). FITC signal was used to evaluate the binding activity.
2e5 of transient transfected anti- CD276 ScFv CAR-293 cells were stained with isotype and Whitlow/218 Linker-Alexa Fluor® 488 (Fig. D and E). Alexa Fluor® 488 signal was used to evaluate the binding activity.
Product Details
Product Details
Product Specification
Species | Human |
Synonyms | B7 homolog 3 (B7-H3),CD276,B7 homolog 3 |
Accession | Q5ZPR3-2 |
Amino Acid Sequence | Leu29-Pro245 with Human IgG1 Fc at the C-Terminus |
Expression System | HEK293 |
Molecular Weight | 60-70kDa |
Conjugation | FITC |
Tag | Human IgG1 Fc |
Physical Appearance | Liquid |
Storage Buffer | PBS, pH7.4 |
Stability & Storage | · 12 months from date of receipt, lyophilized powder stored at -20 to -80℃. |
Reference | 1. A I Chapoval et al. B7-H3: a costimulatory molecule for T cell activation and IFN-gamma production.Nat Immunol. 2001 Mar;2(3):269-74. |
Background
B7 homolog 3 (B7-H3, CD276) is a member of the B7 family of cell surface ligands that regulate T cell activation and immune responses. B7-H3 protein contains two extracellular Ig-like V-type domains and two IgG-like C2-type domains, a transmembrane domain, and a short intracellular domain. Early research examining the biological process of B7-H3 suggested that B7-H3 is a positive regulator of T cell response. Subsequent research studies indicated that B7-H3 is a negative regulator of T cell response, and that the protein inhibits T cell proliferation. One possibility is that B7-H3 interacts with two distinct sets of receptors, resulting in seemingly opposite biological outcomes. B7-H3 is expressed by antigen presenting cells, activated T cells, and a few normal tissues, including placenta and prostate. Expression of B7-H3 is seen in several cancer types, including prostate, breast, colon, lung, and gastric cancers, and in endothelial cells from tumor associated vasculature.
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