摘要
AIM： To analyze the phenotype and function of dendritic cells （DC） from patients with hepatocellular carcinoma （HCC） in order to understand their role in this disease. METHODS： Myeloid dendritic cells were enumerated in peripheral blood of HCC patients. CD80, CD83, CD86 and HLA-DR expression on naive and stimulated myeloid dendritic cells from peripheral blood were analyzed. Myeloid dendritic cells were isolated from peripheral blood and their function was tested. Phagocytosis was analyzed using FITC-dextran beads, peptide specific stimulation, the capacity to stimulate allogeneic T cells and secretion of cytokines upon poly dZ：dC was tested. RESULTS： Myeloid dendritic cells were reduced in patients with HCC. No differences in CD80, CD83, CD86 and HLA-DR expression were found on naive and stimulated myeloid dendritic cells from HCC patients and healthy controls. Normal phagocytosis or stimulation of peptide specific T cells was observed in contrast to an impaired allo-stimulatory capacity and a reduced IL-12 secretion. CONCLUSION： Impaired IL-12 production of mDCs in patients could lead to an impaired stimulatory capacity of naive T cells suggesting that IL-12 directed therapies may enhance tumor specific immune responses in HCC patients.
瞄准：与肝细胞癌(HCC ) 从病人分析树枝状的房间(DC ) 的显型和功能以便在这疾病理解他们的角色。方法：骨髓的的树枝状的房间在 HCC 病人的外部血被枚举。从外部血的天真、刺激的骨髓的的树枝状的房间上的 CD80， CD83， CD86 和 HLA 医生表示被分析。骨髓的的树枝状的房间从外部血被孤立，他们的功能被测试。吞噬作用用 FITC 葡聚糖祷告被分析，肽特殊刺激，在多形核白细胞 dI:dC 之上刺激 allogeneic T 房间和 cytokines 的分泌物的能力被测试。结果：骨髓的的树枝状的房间与 HCC 在病人被减少。在 CD80， CD83， CD86 和 HLA 医生表示的差别都没从 HCC 病人和健康控制在天真、刺激的骨髓的的树枝状的房间上被发现。肽 specific T 房间的正常吞噬作用或刺激与一个损害 allo-stimulatory 能力和减少的 IL-12 分泌物相对照被观察。结论：在病人的 mDCs 的损害 IL-12 生产能导致建议指导治疗可以提高的那 IL-12 的天真的 T 房间的一个损害 stimulatory 能力在 HCC 病人的肿瘤 specific 免疫者回答。
基金
Supported by Erich und Gertrud Roggenbruck Stiftung, Deutsche Forschungsgemeinschaft (KFO 119)
