Spartalizumab Biosimilar uses the same protein sequences as the therapeutic antibody spartalizumab. A humanized monoclonal antibody directed against the negative immunoregulatory human cell surface receptor programmed death-1 (PD-1, PCD-1), with immune checkpoint inhibitory and antineoplastic activities. Upon administration, spartalizumab binds to PD-1 expressed on activated T cells and blocks the interaction with its ligands, programmed cell death 1 ligand 1 (PD-L1, PD-1L1) and PD-1 ligand 2 (PD-L2, PD-1L2). The inhibition of ligand binding prevents PD-1-mediated signaling and results in both T-cell activation and the induction of T-cell-mediated immune responses against tumor cells. PD-1, an immunoglobulin (Ig) superfamily transmembrane protein and inhibitory receptor, negatively regulates T-cell activation.
應(yīng)用類(lèi)型
Flow cytometry, animal model study
免疫原
Human PD1
來(lái)源宿主
CHO cells
反應(yīng)性
Human
保存建議
Store at 4°C 1 month, store at -20°C to -70°C 12 month. protected from prolonged exposure to light. Avoid freeze/thaw cycles.