Abstract
Trastuzumab is a humanized antibody against human epidermal growth factor receptor 2 (HER2) that offers significant survival benefits to patients with HER2-overexpressing breast or gastric cancer. HER2 is also known to be overexpressed in colon cancers. In this study, a novel anti-HER2 monoclonal antibody (mAb), H2Mab-19 (IgG2b, κ) was characterized for its anticancer activity in colon cancers. H2Mab-19 showed both antibody-dependent cellular cytotoxicity and complement-dependent cytotoxicity activities against Caco-2, a colon cancer cell line. Furthermore, H2Mab-19 significantly reduced tumor development in a Caco-2 xenograft model. These results suggest that treatment with H2Mab-19 may be a useful therapy for patients with HER2-expressing colon cancers.
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