Adenomas of the nonpigmented ciliary epithelium (NPCE) are often clinically indistinguishable from amelanotic malignant melanomas of the ciliary body or metastatic carcinomas. This paper reports a case study of a dist...Adenomas of the nonpigmented ciliary epithelium (NPCE) are often clinically indistinguishable from amelanotic malignant melanomas of the ciliary body or metastatic carcinomas. This paper reports a case study of a distinctive variant of adenoma of the NPCE, which clinically appears as epiretinal membrane in the macular region. Histopathologic studies have revealed this is an adenoma of the NPCE. Identification of this clinic feature is important because it will miss the diagnosis of the adenoma of the NPCE. In this case study, B-scan ultrasonography as well as computerized tomography (CT) has been used to provide help in diagnosing the ciliary body tumor. Because of their anterior location in the ciliary body, partial lamellar sclerou-vectomy is an effective method of treatment.展开更多
目的·探索RBX1(ring-box protein 1)在葡萄膜黑色素瘤(uveal melanoma,UVM)肿瘤细胞中对免疫相关基因的调控作用。方法·通过检索癌症基因组图谱(The Cancer Genome Atlas,TCGA)数据库分析RBX1在肿瘤中的表达水平以及与临床分...目的·探索RBX1(ring-box protein 1)在葡萄膜黑色素瘤(uveal melanoma,UVM)肿瘤细胞中对免疫相关基因的调控作用。方法·通过检索癌症基因组图谱(The Cancer Genome Atlas,TCGA)数据库分析RBX1在肿瘤中的表达水平以及与临床分期、生存预后的相关性。使用靶向RBX1的小干扰RNA(small interfering RNA,siRNA)分别在UVM细胞系92.1、OMM2.3和MEL290中瞬时敲低RBX1,并对瞬时敲低RBX1的92.1细胞进行转录组测序,分析si RBX1转染细胞与对照细胞的差异表达基因,并采用基因集富集分析(gene set enrichment analysis,GSEA)对差异基因进行分析,探究RBX1与肿瘤免疫相关基因的关系。在分析结果的基础上,通过实时荧光定量PCR(qPCR)分别检测瞬时敲低RBX1的92.1、OMM2.3和MEL290细胞系中信号转导与转录激活因子1(signal transducer and activator of transcription 1,STAT1)及其下游的CXC趋化因子配体9(C-X-C motif chemokine ligand 9,CXCL9)和CXCL10的mRNA表达水平,并通过Western blotting检测92.1细胞中STAT1及p-STAT1蛋白表达水平。在瞬时敲低RBX1的细胞系OMM2.3和MEL290中,分别加入5 nmol/L或10 nmol/L的STAT1抑制剂fludarabine,处理48 h后通过qPCR检测CXCL9和CXCL10的mRNA表达水平。结果·TCGA数据库分析表明:与正常组织相比,RBX1在多种肿瘤中高表达,在肾上腺皮质癌和UVM中显著高表达;且这2种肿瘤分期晚的患者,RBX1表达水平更高,同时RBX1表达水平高的患者的总生存期更短(均P<0.05)。对瞬时敲低RBX1的92.1细胞和对照细胞进行转录组测序,获得差异基因,并且GSEA结果显示,RBX1参与调控肿瘤免疫相关通路。热图分析显示RBX1敲低后STAT1表达水平上升。在92.1、OMM2.3和MEL290细胞系中,qPCR结果显示RBX1敲低后STAT1、CXCL9和CXCL10的mRNA表达水平上升,Western blotting结果显示在92.1细胞系中敲低RBX1后STAT1及p-STAT1表达水平上升。加入STAT1抑制剂后,OMM2.3和MEL290细胞系中的CXCL9和CXCL10 mRNA上调表达被抑制。结论·RBX1在UVM细胞中可能通过STAT1调控CXCL9和CXCL10的表达,参与肿瘤免疫调控。展开更多
基金Project (No. 20010510) supported by the Ministry of Education of Zhejiang Province, China
文摘Adenomas of the nonpigmented ciliary epithelium (NPCE) are often clinically indistinguishable from amelanotic malignant melanomas of the ciliary body or metastatic carcinomas. This paper reports a case study of a distinctive variant of adenoma of the NPCE, which clinically appears as epiretinal membrane in the macular region. Histopathologic studies have revealed this is an adenoma of the NPCE. Identification of this clinic feature is important because it will miss the diagnosis of the adenoma of the NPCE. In this case study, B-scan ultrasonography as well as computerized tomography (CT) has been used to provide help in diagnosing the ciliary body tumor. Because of their anterior location in the ciliary body, partial lamellar sclerou-vectomy is an effective method of treatment.
