| Code | CSB-RA878942MB5HU |
| Size | US$9799 |
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This recombinant monoclonal antibody is designed as a research-grade biosimilar to Benmelstobart, 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, bladder cancer, melanoma, and other solid tumors, where its expression correlates with immune evasion and often poor prognosis.
Benmelstobart is a humanized monoclonal antibody against PD-L1. By blocking the PD-1/PD-L1 signaling pathway, it removes the inhibition of T cells by the tumor microenvironment and restores their anti-tumor immune function. It has been approved for first-line treatment of extensive-stage small cell lung cancer (ES-SCLC) in combination with chemotherapy. This biosimilar antibody serves as a valuable research tool for investigating immune checkpoint mechanisms, tumor immunology, and cancer immunotherapy pathways. It enables researchers to explore PD-L1 expression patterns, validate therapeutic targets, and study immune modulation in preclinical models.
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