Tocilizumab (Anti-Human IL6R, Humanized Antibody) is an anti-human interleukin-6 receptor (IL-6R) neutralizing antibody, prevents binding of IL-6 to the IL-6R, thereby inhibiting both classic and trans-signaling. Tocilizumab (Anti-Human IL6R, Humanized Antibody) can be used for the treatment of rheumatoid arthritis^[1]. Tocilizumab is remarkablely effective for the study of severe COVID-19 (coronavirus disease)^[4].

Human IgG1 kappa

Human IgG1 kappa, Isotype Control

Humanized

Tocilizumab (Anti-Human IL6R, Humanized Antibody) (1-100 ng/mL; 24 hours, 48 hours) inhibits the cell proliferation (growth rate) in a dose-dependent manner, growth rate by HACM is reduced almost completely by 100 ng/mL tocilizumab^[2].
Tocilizumab (Anti-Human IL6R, Humanized Antibody) (0.001-10,000 μg/ml; 2 days) inhibits Ba/F3-gp130-IL-6R cell proliferation stimulated with hIL-6 with an IC₅₀ of 13.5 ng/ml^[1].
Tocilizumab (Anti-Human IL6R, Humanized Antibody) (1 μM; 6 hours) reduces the phosphorylation of STAT3 in vitro consistent with in vivo SAS cells^[3].
Tocilizumab (Anti-Human IL6R, Humanized Antibody) (1-5 μM; 24 hours) significantly reduces VEGF mRNA expression in SAS cells with serum-free medium^[3].

MedChemExpress (MCE) has not independently confirmed the accuracy of these methods. They are for reference only.

Tocilizumab (Anti-Human IL6R, Humanized Antibody) (intravenous injection; 1.0 mg/100 μL; twice a week, three weeks) decreases the volume of each metastatic focus in tocilizumab-injected mouse brains^[2].
Tocilizumab (Anti-Human IL6R, Humanized Antibody) (intraperitoneal injection;100 μg/mL, every 48 hours; 20days) suppresses OSCC progression and suppresses Tumor Angiogenesis^[3].

MedChemExpress (MCE) has not independently confirmed the accuracy of these methods. They are for reference only.

375823-41-9

Liquid

Colorless to light yellow

[Tocilizumab]

Shipping with dry ice.

Please store the product under the recommended conditions in the Certificate of Analysis.

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  Human IgG1 kappa

• 
  Flow cytometry analysis of IL-6R expression U937 cells labelling IL-6R with Tocilizumab at 10nM (Red), 20ng/mL of FcγRI (CD64), FcγRII (CD32), and FcγRIII (CD16) were added to block the binding of Fc of antibody to cells respectively. Goat anti human IgG Fc(Alexa Fluor488) was used as the secondary antibody at 1/400 dilution. Isotype control - human IgG (Blue). Unlabeled control - Unlabelled cells (Gray).

• [1]. Garbers C, et al. Inhibition of classic signaling is a novel function of soluble glycoprotein 130 (sgp130), which is controlled by the ratio of interleukin 6 and soluble interleukin 6 receptor. J Biol Chem. 2011 Dec 16;286(50):42959-70.  [Content Brief]

  [2]. Mami Noda, et al. IL-6 Receptor Is a Possible Target against Growth of Metastasized Lung Tumor Cells in the Brain. Int J Mol Sci. 2013 Jan; 14(1): 515–526.  [Content Brief]

  [3]. Shinriki S, et al. Humanized anti-interleukin-6 receptor antibody suppresses tumor angiogenesis and in vivogrowth of human oral squamous cell carcinoma. Clin Cancer Res. 2009 Sep 1;15(17):5426-34.  [Content Brief]

  [4]. Chi Zhang, et al. Cytokine Release Syndrome in Severe COVID-19: Interleukin-6 Receptor Antagonist Tocilizumab May Be the Key to Reduce Mortality. Int J Antimicrob Agents. 2020 May;55(5):105954.  [Content Brief]