Non-fucosylated monoclonal human IgG1 antibody against human CTLA-4

Anti-hCTLA4-hIgG1fut features the constant region of the human IgG1 isotype and the variable region of ipilimumab. Ipilimumab is a fully human IgG1 monoclonal antibody that targets CTLA-4 (also known as CD152), a negative regulator of T cell activation. By binding CTLA-4, ipilimumab inhibits negative signals that physiologically downregulate T cell activation and exerts its therapeutic activity by upregulating the antitumor activity of T lymphocytes [1,2]. In addition, Ipilimumab induces antibody-dependent cell-mediated cytotoxicity (ADCC) and TNF-α production [3]. Ipilimumab has been approved by the FDA for the treatment of unresectable or metastatic melanoma. Ipilimumab is undergoing clinical trials for other types of cancers, including lung cancer [4].

Anti-hCTLA4-hIgG1fut is a non-fucosylated antibody. The absence of the fucose residue from the N-glycans of IgG-Fc results in dramatic enhancement of antibody-dependent cellular cytotoxicity (ADCC) without any detectable change in complement-dependent cytotoxicity (CDC) or antigen binding capability [5,6].

Anti-hCTLA4-hIgG1fut was generated by recombinant DNA technology. It has been produced in CHO cells that are deficient for fucosylation and purified by affinity chromatography with protein G.


Specificity: Targets cells expressing human CTLA-4
Clonality: Monoclonal antibody
Isotype: Human IgG1
Source: CHO cells
Purity: Purified by affinity chromatography with protein G

Quality control:
- Binding of Anti-hCTLA4-hIgG1fut to hCTLA4 has been validated using flow cytometry.
- The complete sequence of this antibody has been verified.
- The absence of bacterial contamination (e.g. lipoproteins and endotoxins) has been confirmed using HEK-Blue™ TLR2 and HEK-Blue™ TLR4 cells.


• 100 µg purified anti-hCTLA4-hIgG1fut antibody, provided azide-free and lyophilized


  1. Grosso JF. & Jure-Kunkel MN., 2013. CTLA-4 blockade in tumor models: an overview of preclinical and translational research. Cancer Immun. 13:5.
  2. Maio M. et al., 2013. Update on the role of ipilimumab in melanoma and first data on new combination therapies. Curr Opin Oncol. 25(2):166-72.
  3. Laurent S.. et al., 2013. The engagement of CTLA-4 on primary melanoma cell lines induces antibody-dependent cellular cytotoxicity and TNF-α production. J Transl Med. 11:108.
  4. Tomasini P., 2012. Ipilimumab: its potential in nonsmall cell lung cancer. Ther Adv Med Oncol. 4(2): 43–50.
  5. Yamane-Ohnuki N. & Satoh M., 2009. Production of therapeutic antibodies with controlled fucosylation.corresponding MAbs. 1(3): 230–236.
  6. Mizushima T., 2011. Structural basis for improved efficacy of therapeutic antibodies on defucosylation of their Fc glycans. Genes Cells. 16(11): 1071–1080.



Description Human CTLA4 (ipilimumab) antibody - Human IgG1, non-fucosylated
Cat. Codehctla4-mab13
Unit Size100 µg
Price For price or distributor address,
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