Cetuximab (anti-EGFR)

Catalog No.A2000 Synonyms: C225

For research use only.
Not for use in humans.

Cetuximab, a novel molecular-targeted agent,is an inhibitor of EGFR monoclonal humanized antibody interacting with the extracellular binding site of EGFR to block ligand stimulation. MW:145.781 KD.

Cetuximab (anti-EGFR)

Selleck's Cetuximab (anti-EGFR) has been cited by 19 publications

Purity & Quality Control

Choose Selective EGFR Inhibitors

Biological Activity

Description Cetuximab, a novel molecular-targeted agent,is an inhibitor of EGFR monoclonal humanized antibody interacting with the extracellular binding site of EGFR to block ligand stimulation. MW:145.781 KD.
EGFR [4]
(Cell-free assay)
0.39 nM(Kd)
In vitro

Cetuximab treatment increases mitochondrial priming of EGFR-expressing HeLa cells but not in EGFR-expressing MDA-MD-231 cells.[2]

In vivo

C225 enhanced the antitumor activity of several chemotherapeutic drugs in mouse xenograft models[1]. Cetuximab, exerts its antitumor efficacy by multiple mechanisms that include the inhibition of cell cycle progression by arrest in the G1- phase and decreased cell number in the S-phase. Cell cycle arrest in the G1-phase also induces apoptosis by the induction and activation of proapoptotic molecules. cetuximab alone and in synergy with carboplatin resulted in decreases of tumor size, metastatic spread, and MVD in NCI-N87 tumors with EGFR cell surface expression and absence of mutations in BRAF and K-ras, whereas cetuximab had minimal in vitro effect and no in vivo treatment efficacy in tumors derived from MKN-45, in which the phenotype was also BRAF and K-ras wildtype, but which had only weak cytoplasmic EGFR protein expression[3].

Protocol (from reference)

Cell Research:
  • Cells were lysed at a density of 1 x 106/50 μL in lysis buffer (0.25 M Tris-HCl, 2% sodium dodecylsulfate, 4% β-mercaptoethanol, 10% glycerol, 0.02% bromophenol blue) supplemented with 1 X protease/phosphatase inhibitor cocktail. Cell lysates were then loaded onto polyacrylamide gels with sodium dodecyl sulfate. After electrophoresis, proteins were transferred to polyvinylidene difluoride (PVDF) membranes. The transblotted membranes were blocked for 1 hr and then probed with appropriate primary antibodies overnight at 4 ℃. Next day, the membranes were washed three times for a total of 30 min and then incubated with IRDye 680RD Donkey anti-Rabbit IgG (H + L) or IRDye 800CW Donkey anti-Mouse IgG (H + L) in darkness at room temperature for 1 h. After another three washes, scan immunoblot membranes and quantify band intensity.

Animal Research:
  • Objective: Antitumor activity of cetuximab in murine gastric cancer model
    Animal Models: Nude mouse model for human gastric cancer (CD-1/nu-nu mice)
    Formulation: 0.9% NaCl
    Dosages: 1 mg/kg
    Administration: i.p.
    Reference: https://www.ncbi.nlm.nih.gov/pubmed/22011788

    Objective: To investigate the relationship between the EGFR levels and the responsiveness to cetuximab treatment in human cancer xenograft models
    Animal Models: Female athymic, nude mice were implanted s.c. with ~1 mm3 tumor fragments
    Formulation: PBS
    Dosages: 0.25, 0.5 or 1 mg/mouse
    Administration: i.p.
    Reference: https://www.ncbi.nlm.nih.gov/pubmed/27186886

    Cetuximab can apply to nude mice, various cancer cell lines and other related assays (Only for Reference)

Product Details

CAS No. 205923-56-4
Formulation PBS buffer, pH 7.2
Isotype Human IgG1
Source CHO cells
Storage Store the undiluted solution at 4°C in the dark to avoid freeze-thaw cycles

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Frequently Asked Questions

Question 1:
How to store the antibody?

Store the undiluted solution at 4 °C in the dark. Freezing antibodies can result in a loss of activity caused by the freezing/thawing process. Diluting antibodies to working concentrations and storing at 4°C for more than a day should be avoided. Additionally, make sure to keep the antibody sterile. Under these storage conditions, your antibodies should remain active for up to one year and oftentimes longer.

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