This recombinant monoclonal antibody is designed as a research-grade biosimilar to Sudubrilimab, targeting CD274, also known as programmed death-ligand 1 (PD-L1). CD274 is a transmembrane protein that functions as a critical immune checkpoint regulator by binding to PD-1 receptors on T cells, thereby suppressing T cell activation and proliferation. This interaction serves as a key mechanism by which tumor cells evade immune surveillance. Elevated CD274 expression has been documented across numerous malignancies, including non-small cell lung cancer, triple-negative breast cancer, melanoma, and various hematological cancers, where it correlates with poor prognosis and immune evasion.
Sudubrilimab is a humanized IgG4 monoclonal antibody developed to block the PD-L1/PD-1 interaction, restoring anti-tumor immune responses. This biosimilar antibody provides researchers with a valuable tool for investigating immune checkpoint mechanisms, evaluating PD-L1 expression patterns in disease models, and exploring combination immunotherapy strategies. It supports studies in cancer immunology, tumor microenvironment characterization, and therapeutic antibody development.
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