CD274 (PD-L1, B7-H1) Monoclonal Antibody (MIH1), Functional Grade, eBioscience™, Invitrogen™

Description

• Description: The MIH1 monoclonal antibody reacts with human B7-H1, also known as PD-L1
• B7-H1, a member of the B7 family, has a predicted molecular weight of approximately 40 kDa and belongs to the Ig superfamily
• B7-H1 is expressed on a majority of leukocytes
• B7-H1 is a ligand for PD-1
• Interaction of PD-1 with either PD-L1 (B7-H1) or PD-L2 (B7-DC) results in inhibition of T and B cell responses
• MIH1 is reported to be a blocking antibody
• Applications Reported: The MIH1 antibody has been reported for use in flow cytometric analysis
• It has also been reported in blocking in in vitro functional assays
• Applications Tested: The MIH1 antibody has been tested by flow cytometric analysis of normal human peripheral blood cells
• This can be used at less than or equal to 1 μg per test
• A test is defined as the amount (μg) of antibody that will stain a cell sample in a final volume of 100 μL
• Cell number should be determined empirically but can range from 10^5 to 10^8 cells/test
• It is recommended that the antibody be carefully titrated for optimal performance in the assay of interest
• Storage and handling: Use in a sterile environment
• Filtration: 0.2 μm post-manufacturing filtered
• Purity: Greater than 90%, as determined by SDS-PAGE
• Endotoxin Level: Less than 0.001 ng/μg antibody, as determined by LAL assay
• Aggregation: Less than 10%, as determined by HPLC
• Programmed death receptor ligand 1 (PD-L1, also called B7-H1) is a recently described B7 family member
• To date, one specific receptor has been identified that can be ligated by PD-L1
• This receptor, programmed death receptor 1 (PD-1), has been shown to negatively regulate T-cell receptor (TCR) signaling
• Upon ligating its receptor, PD-L1 has been reported to decrease TCR-mediated proliferation and cytokine production
• PD-L1 expression was found to be abundant on many murine and human cancers and could be further up-regulated upon IFN-gamma stimulation
• Thus, PD-L1 might play an important role in tumor immune evasion.