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Enhancement of in vitro and in vivo anti-tumor activity of anti-GD2 monoclonal antibody 220-51 against human neuroblastoma by granulocyte-macrophage colony-stimulating factor and granulocyte colony-stimulating factor.

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We have evaluated the anti-tumor effect of anti-GD2 mouse monoclonal antibody (mAb) 220-51 against human neuroblastoma cell line TGW in vitro and in vivo. The mAb 220-51 was able to mediate complement-dependent cytotoxicity (CDC) and antibody-dependent cellular cytotoxicity (ADCC) using human effector cells. In the presence of recombinant human granulocyte-macrophage colony-stimulating factor (GM-CSF), granulocyte ADCC was significantly augmented in vitro. When mAb 220-51 was administered to tumor-bearing nude mice, tumor growth was significantly inhibited as compared with untreated controls. Administration of recombinant murine GM-CSF in combination with mAb 220-51 significantly enhanced the anti-tumor effect of mAb in vivo. Recombinant human granulocyte colony-stimulating factor (G-CSF) combined with mAb 220-51 was also able to enhance it, although granulocyte ADCC was not affected by the presence of recombinant human G-CSF in vitro. Moreover, GM-CSF and G-CSF work additively to enhance the anti-tumor effect of mAb 220-51 in vivo. The GM-CSF and G-CSF may have a clinical potency in immunotherapy with anti-GD2 mAb for the treatment of neuroblastoma.
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Document Type: Research Article

Affiliations: Department of Pediatrics, Nagoya University School of Medicine, 65 Tsurumai-cho, Showa-ku, Nagoya 466-8550, Japan.

Publication date: October 1, 1998

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  • The International Journal of Molecular Medicine is a monthly, peer-reviewed journal devoted to the publication of high quality studies related to the molecular mechanisms of human disease. The journal welcomes research on all aspects of molecular and clinical research, ranging from biochemistry to immunology, pathology, genetics, human genomics, microbiology, molecular pathogenesis, molecular cardiology, molecular surgery and molecular psychology.

    The International Journal of Molecular Medicine aims to provide an insight for researchers within the community in regard to developing molecular tools and identifying molecular targets for the diagnosis and treatment of a diverse number of human diseases.
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