Surgical excision combined with autologous whole tumor cell vaccination is an effective therapy for murine neuroblastoma

被引:24
作者
Ohashi, Kensuke
Kobayashi, Gen
Fang, Sandy
Zhu, Xiaoyan
Antonia, Scott J.
Krieg, Arthur M.
Sandler, Anthony D. [1 ]
机构
[1] Univ Iowa, Roy J & Lucille A Carver Coll Med, Dept Surg, Div Pediat Surg, Iowa City, IA 52242 USA
[2] H Lee Moffitt Canc Ctr & Res Inst, Tampa, FL 33612 USA
[3] Coley Pharmaceut Grp, Wellesley, MA 02481 USA
关键词
inummostimalatory DNA; CpG; oligodeoxynucleotide; GM-CSF; immunotherapy; neuroblastoma; tumor vaccine; minimal residual disease;
D O I
10.1016/j.jpedsurg.2006.04.034
中图分类号
R72 [儿科学];
学科分类号
100202 ;
摘要
Background: Although a whole tumor cell vaccine strategy based on the synergistic action of granulocyte macrophage--colonystimulating factor (GM-CSF) transduced tumor cells and CpG oligodeoxynucleotides induces potent tumor-specific immunity, such therapy is not curative in the face of large established tumors. Purpose: The primary goal of this study was to determine if combining surgical resection of the tumor with whole tumor cell vaccination is an effective therapeutic strategy for established neuroblastoma. We also wished to determine if the phenotype of the immune response generated by this vaccine strategy was altered by the presence of bulky established tumor. Methods: The murine neuroblastoma model was used in which syngeneic Neuro-2a was grown subcutaneously in A/J mouse. The whole tumor cell vaccine consisted of irradiated Neuro-2a as the vehicle for tumor antigens admixed with GM-CSF and CpG oligonucleotides (100 Jig). Results: In the presence of large tumors, dendritic cells were effectively activated by the vaccine, but secretion of intereferon-gamma from vaccinated splenocytes in response to antigen stimulation was suppressed. The tumor's inhibitory effect on interferon-gamma production from vaccinated splenocytes was reversed after resection of the primary tumor. The use of prepared GM-CSF-secreting bystander cells simplified production of an autologous whole tumor cell vaccine that was remarkably effective in curing large tumors when combined with tumor excision. Conclusions: These findings suggest that at least part of the immunosuppressive effects of the cancer can be reversed after surgical excision of the primary tumor. Thus, in the context of minimal residual disease, this dendritic cell-targeted immunotherapeutic approach may prove effective for the treatment of neuroblastoma. (c) 2006 Elsevier Inc. All rights reserved.
引用
收藏
页码:1361 / 1368
页数:8
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