Tocilizumab 是抗人白细胞介素-6 受体 (IL-6R) 的中和抗体，能够阻碍 IL-6 与 IL-6R 的结合，进而抑制经典和反式信号。它可用于研究类风湿性关节炎，对重症 COVID-19 冠状病毒病方面的研究具有显著效果。

Tocilizumab anti-IL-6R) is a humanized monoclonal antibody that binds to the interleukin-6 receptor

Objective: To validate that IL-6 signaling is essential for TAM (tumor-associated macrophages)-enhanced CSC (cancer stem cells) function. Concentrations: 5 μg/ml. Incubation Time: 72 h. Method: For co-culture experiments, 12-well Transwell chambers were used with 2×105 HepG2 or Hep3B cells seeded in the lower chamber one day before co-culture and either 5×105 or 1×106 TAMs added in the upper chamber. Tocilizumab or human IgG antibody were added in indicated experiments to selected wells. After 24 to 72 hours, HCC cells and CD14+ TAM cells were collected separately for analysis. Cells:HepG2 cell lines, TAMs isolated from HCCs (hepatocellular carcinoma)

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