目的探讨促凋亡蛋白PDCD5(Programmed Cell Death 5)在卵巢上皮性癌组织中的表达及其与患者生存时间的关系。方法收集手术切除的卵巢癌组织107例,卵巢良性肿瘤组织16例和正常卵巢组织11例。采用免疫组织化学方法检测各组织内PDCD5蛋白的表达。利用图像分析系统和图像分析软件测定PDCD5蛋白在卵巢上皮性癌、卵巢良性肿瘤及正常卵巢组织中表达的平均光密度值,并结合临床资料进行生存分析。结果①正常卵巢组织,卵巢良性肿瘤组织中PDCD5蛋白呈高表达;卵巢癌组织中PDCD5蛋白呈低表达;图像分析结果显示三组间差异有统计学意义(P<0.05);②PDCD5蛋白在不同FIGO分期和组织学分级的卵巢上皮性癌中表达有显著差异(P<0.05),并且随着FIGO分期和组织学分级的升高,PDCD5蛋白的表达下降;③PDCD5蛋白表达强弱与患者生存时间呈正相关(P<0.05,R=0.731)。结论PDCD5蛋白与卵巢上皮性癌的发生、发展及临床预后有密切关系。
Objective： Transforming growth factor-1 （TGF-βI）, vascular endothelial growth factor （VEGF）, and interleukin-lO （IL-10） may be critical cytokines in the microenvironment of a tumor, playing roles in immune suppression. This study was conducted to elucidate the roles and immunosuppressive functions of these cytokines in epithelial ovarian cancer （EOC）. Methods： The expression levels of TGF-β1, VEGF and IL-10 in malignant tissue were evaluated by immune- histochemistry and compared with corresponding borderline, benign, and tumor-free tissues. Moreover, relationships among the levels of these cytokines and correlations between expression and the prognosis of EOC were analyzed by Pearson rank correlations and multi-factor Logistic regression. The roles of TGF-βI, VEGF, and IL-lO in the immunosuppressive microenvironment of ovarian cancer were studied through dendritic cell （DC） maturation and CD4＋CD25＋FoxP3＋ Treg generation in vitro experiments. Results： TGF-β1, VEGF, and IL-IO were expressed TGF-β1 was an independent prognostic factor for EOC n 100%, 74.69%, and 54.96% of EOC patients, respectively. L-IO was significantly co-expressed with VEGF. In vitro, VEGF and TGF-β31 strongly interfered with DC maturation and consequently led to immature DCs, which secreted high levels of IL-IO that accumulated around the tumor site. TGF-β1 and IL-10 induced Treg generation without antigen presentation in DCs. Conclusions： TGF-βI, VEGF and IL-IO play important roles in EOC and can lead to frequent immune evasion events.
Chan-zhen LiuLi ZhangXiao-hong ChangYe-xia ChengHong-yan ChengXue YeTian-yun FuJun ChenHeng Cui
