Abstract
CD10 is a glycosylated transmembrane protein and is known as a membrane endopeptidase. It is expressed on predifferentiated lymphocyte progenitor, epithelial, stromal, and tumor cells. Therefore, antibodies against CD10 are used for diagnosing follicular lymphoma and solid tumors, including renal carcinomas. In this study, we developed an anti-human CD10 monoclonal antibody, clone C10Mab-31 (IgG1, kappa), which detects CD10 by flow cytometry and shows high affinity for CD10-overexpressed CHO-K1 (CHO/CD10) cells. Furthermore, the defucosylated mouse IgG2a version of C10Mab-31 (31-mG2a-f) exhibits antibody-dependent cellular cytotoxicity, complement-dependent cytotoxicity, and antitumor activities in mouse xenografts of CHO/CD10 cells. These results indicate that 31-mG2a-f exerts antitumor effects against CD10-expressing tumors and could be valuable as part of an antibody treatment regimen for them.
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