This recombinant monoclonal antibody is developed as a research-grade biosimilar to atezolizumab, 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 represents a key mechanism by which tumor cells evade immune surveillance. CD274 is frequently overexpressed in various malignancies, including non-small cell lung cancer, urothelial carcinoma, triple-negative breast cancer, and melanoma, where its expression correlates with immune evasion and poor prognosis.
Atezolizumab is a clinically approved anti-PD-L1 therapeutic antibody that blocks the CD274/PD-1 interaction, restoring anti-tumor immune responses. This biosimilar antibody provides researchers with a valuable tool for investigating PD-L1 biology, studying immune checkpoint mechanisms, evaluating PD-L1 expression patterns in tissue samples, and developing novel immunotherapeutic strategies. It serves as an essential reagent for cancer immunology research and biomarker discovery studies.
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