| Product Name | Anti-B7-H3 Monoclonal Antibody, Recombinant | 
    
      | Catalog # | EG-372 | 
    
      | Size | 100 µg | 
    
      | Key Features | 
          Rabbit monoclonal antibody produced in HEK293 cells under serum-free, protein-free conditionsPurified by Protein A affinity chromatographyHigh batch-to-batch consistency and reproducibilityLong-term supply security | 
    
      | Clone Number | C10 | 
    
      | Immunogen | Recombinant extracellular domain of B7-H3 expressed and purified from HEK293 cells | 
    
      | Target | Extracellular region of B7-H3 (CD276) | 
    
      | Species Cross-Reactivity | Human | 
    
      | Applications | Flow Cytometry, Immunoprecipitation (IP), ELISA | 
    
      | Recommended Working Concentrations | 
          Flow Cytometry / ELISA: 5 µg/mL final concentrationImmunoprecipitation: 10 µg per 0.3–0.5 mg cell lysate | 
    
      | Background | B7-H3 (CD276) is a member of the B7 family and is overexpressed in many cancer types. As an immune checkpoint protein, B7-H3 inhibits tumor antigen-specific immune responses and contributes to tumor progression by promoting migration, invasion, angiogenesis, chemoresistance, epithelial-to-mesenchymal transition (EMT), and metabolic regulation. B7-H3 is considered an attractive target for cancer immunotherapy, with several therapeutic agents in development, including enoblituzumab (MGA271), omburtamab, MGD009, MGC018, DS-7300a, and CAR T cells.
 Reference: Kontos F, et al. B7-H3: an attractive target for antibody-based immunotherapy. Clinical Cancer Research. 2020, 27:1227–1235.
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      | Quality Control |   
          Flow cytometry assay demonstrating cell surface expression of B7-H3. KLM-1 cells (1 × 106) were incubated with 5 µg antibody in 1 mL PBS containing 5% BSA. Antibody binding was detected using a Cy5-conjugated goat anti-rabbit secondary antibody. Blue line: isotype control; red line: B7-H3 antibody staining.
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      | Concentration | As indicated on the vial label | 
    
      | Formulation | 80% PBS, pH 7.4; 20% glycerol; 5% trehalose; 0.04% sodium azide (preservative) | 
    
      | Shipping | Shipped on blue ice | 
    
      | Storage | -20 to -70 °C (long-term) 4 °C (up to one week)
 For frequent use, aliquot to avoid repeated freeze-thaw cycles.
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