Background： To induce and collect tumor-derived autophagosomes （DRibbles） from tumor cells as an antitumor vaccine by inhibiting the functions of proteasomes and lysosomes. Methods： Dendritic cells （DCs） generat...Background： To induce and collect tumor-derived autophagosomes （DRibbles） from tumor cells as an antitumor vaccine by inhibiting the functions of proteasomes and lysosomes. Methods： Dendritic cells （DCs） generated from peripheral blood mononuclear cell （PBMC） of hepatocellular carcinoma （HCC） patients were cocultured with DRibbles, and then surface molecules of DCs, as well as surface molecules on DCs, were determined by flow cytometry. Meanwhile, immune responses of the DCs-DRibbles were examined by mixed lymphocyte reactions. Results： DRibbles significantly induced the expression of CD80, CD83, CD86 and HLA-DR on DCs. The enzyme-linked immunosorbnent assay （ELISA） showed that IFN-γ, levels after vaccination increased than before in most patients, but CDS＋ proportion of PBMC increased only in nine patients. Higher levels of IFN-γ, were detected in the CD8＋ cells than CD4＋ T cells. These results suggested that DCs-DRibbles vaccine could induce antigen-specific cellular immune response on HCC and could prime strong CD8＋ T cell responses, supporting it as a tumor vaccine candidate. Conclusions： Our results demonstrate that HCC/DRibbles-pulsed DCs immunotherapy might be deployed as an effective antitumor vaccine for HCC immunotherapy in clinical trials.展开更多
目的探讨IL18RAP基因与肝癌患者预后和肿瘤微环境中CD8^(+)T细胞浸润的相关性以及作为肿瘤标志物的可能性。方法癌症基因组图谱(The Cancer Genome Atlas,TCGA)用于评估IL18RAP基因在肝癌中的表达。单因素Cox分析、多因素COX分析和生存...目的探讨IL18RAP基因与肝癌患者预后和肿瘤微环境中CD8^(+)T细胞浸润的相关性以及作为肿瘤标志物的可能性。方法癌症基因组图谱(The Cancer Genome Atlas,TCGA)用于评估IL18RAP基因在肝癌中的表达。单因素Cox分析、多因素COX分析和生存分析揭示IL18RAP基因的预后价值。KEGG、GO和Hallmark富集分析寻找与IL18RAP基因相关的功能通路。免疫浸润分析探究IL18RAP基因与22种免疫细胞浸润的关系。通过单细胞测序数据库与免疫组化验证IL18RAP基因与CD8^(+)T细胞浸润的相关性。结果IL18RAP在肝癌组织中表达下调,其低表达与肝癌患者的不良预后相关。功能富集分析显示IL18RAP的表达与免疫功能通路相关。免疫浸润、单细胞测序和免疫组化表明IL18RAP高表达于CD8^(+)T细胞。结论IL18RAP低表达与肝癌患者的不良预后相关,可能影响了抗肿瘤免疫的CD8^(+)T细胞。展开更多
基金supported by Nanjing Medical Science and Technique Development Foundation,Nanjing Department of Health (Grant:QRX11235 and Grant:ZDX12008)Jiangsu Science and Technology Project of Clinical Medicine Foundation,Science and Technology Department of Jiangsu Province (BL2014005)
文摘Background： To induce and collect tumor-derived autophagosomes （DRibbles） from tumor cells as an antitumor vaccine by inhibiting the functions of proteasomes and lysosomes. Methods： Dendritic cells （DCs） generated from peripheral blood mononuclear cell （PBMC） of hepatocellular carcinoma （HCC） patients were cocultured with DRibbles, and then surface molecules of DCs, as well as surface molecules on DCs, were determined by flow cytometry. Meanwhile, immune responses of the DCs-DRibbles were examined by mixed lymphocyte reactions. Results： DRibbles significantly induced the expression of CD80, CD83, CD86 and HLA-DR on DCs. The enzyme-linked immunosorbnent assay （ELISA） showed that IFN-γ, levels after vaccination increased than before in most patients, but CDS＋ proportion of PBMC increased only in nine patients. Higher levels of IFN-γ, were detected in the CD8＋ cells than CD4＋ T cells. These results suggested that DCs-DRibbles vaccine could induce antigen-specific cellular immune response on HCC and could prime strong CD8＋ T cell responses, supporting it as a tumor vaccine candidate. Conclusions： Our results demonstrate that HCC/DRibbles-pulsed DCs immunotherapy might be deployed as an effective antitumor vaccine for HCC immunotherapy in clinical trials.
文摘目的探讨IL18RAP基因与肝癌患者预后和肿瘤微环境中CD8^(+)T细胞浸润的相关性以及作为肿瘤标志物的可能性。方法癌症基因组图谱(The Cancer Genome Atlas,TCGA)用于评估IL18RAP基因在肝癌中的表达。单因素Cox分析、多因素COX分析和生存分析揭示IL18RAP基因的预后价值。KEGG、GO和Hallmark富集分析寻找与IL18RAP基因相关的功能通路。免疫浸润分析探究IL18RAP基因与22种免疫细胞浸润的关系。通过单细胞测序数据库与免疫组化验证IL18RAP基因与CD8^(+)T细胞浸润的相关性。结果IL18RAP在肝癌组织中表达下调,其低表达与肝癌患者的不良预后相关。功能富集分析显示IL18RAP的表达与免疫功能通路相关。免疫浸润、单细胞测序和免疫组化表明IL18RAP高表达于CD8^(+)T细胞。结论IL18RAP低表达与肝癌患者的不良预后相关,可能影响了抗肿瘤免疫的CD8^(+)T细胞。
