期刊
CELLULAR & MOLECULAR IMMUNOLOGY
卷 8, 期 2, 页码 157-163出版社
NATURE PUBLISHING GROUP
DOI: 10.1038/cmi.2010.35
关键词
CD59; complement; lymphoma; multiple myeloma; rituximab
类别
资金
- US NIH [RO1 AI061174, R21 CA141324]
- Harvard Technology Development Accelerator Fund
- China Scholarship Council [2008638052]
Many monoclonal antibodies (mAbs) have been extensively used in the clinic, such as rituximab to treat lymphoma. However, resistance and non-responsiveness to mAb treatment have been challenging for this line of therapy. Complement is one of the main mediators of antibody-based cancer therapy via the complement-dependent cytolysis (CDC) effect. CD59 plays a critical role in resistance to mAbs through the CDC effect. In this paper, we attempted to investigate whether the novel CD59 inhibitor, recombinant ILYd4, was effective in enhancing the rituximab-mediated CDC effect on rituximab-sensitive RL-7 lymphoma cells and rituximab-induced resistant RR51.2 cells. Meanwhile, the CDC effects, which were mediated by rituximab and anti-CD24 mAb, on the refractory multiple myeloma (MM) cell line ARH-77 and the solid tumor osteosarcoma cell line Saos-2, were respectively investigated. We found that rILYd4 rendered the refractory cells sensitive to the mAb-mediated CDC effect and that rILYd4 exhibited a synergistic effect with the mAb that resulted in tumor cells lysis. This effect on tumor cell lysis was apparent on both hematological tumors and solid tumors. Therefore, rILYd4 may serve as an adjuvant for mAb mediated-tumor immunotherapy. Cellular & Molecular Immunology (2011) 8, 157-163; doi:10.1038/cmi.2010.35; published online 24 January 2011
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