Faculty of Medicine, Medical Biology, Nigde Ömer Halisdemir University, Nigde, Turkey.
Ophthalmic Genet. 2021 Dec;42(6):732-743. doi: 10.1080/13816810.2021.1961280. Epub 2021 Aug 6.
Uveal melanoma (UM) is the most common primary intraocular malignancy in adults, and its metastases are known to be fatal. It is critical to identify molecular markers to be used in potential prognostic evaluation for early diagnosis, treatment, and metastasis or to investigate all aspects of known genetic anomalies. Therefore, this study aimed to analyze the eight genes (GNAQ, GNA11, BAP1, SF3B1, SRSF2, EIF1AX, PLCB4, and CYSLTR2) that are associated with the most common genetic anomalies in UM from a molecular perspective. The genome sequences and expression profiles of 108 UM patients were obtained via bioinformatics tools that provide data from TCGA. The overall mutational load and the mutation patterns for eight genes, in particular, were thoroughly determined. Moreover, PolyPhen2 and SNAP tools were used to estimate the oncogenic/pathogenic properties of identified mutations for UM. In addition to the mutation profile, the effects of the presence of a mutation on gene expression and survival were determined. Finally, STRING network analysis was performed to better understand the functional relationships of mutated proteins in cellular processes. There were 27 missense mutations, 16 frameshift mutations, six nonsense mutations, and three splice region mutations among the 52 mutations found in eight genes, and 26 of them had pathogenic properties. BAP1 m-RNA expression was significantly lower in tumors with the mutant genotype ( = .001). The impact of gene expression, which has poor prognostic importance, on survival is statistically significant for high-expressed BAP1 ( = .0015) and low-expressed CYSLTR2 ( = .0021). To assess the current state of this potentially devastating disease, a molecular perspective has been evaluated. Defining this molecular perspective can be useful in developing targeted drug therapies and personalized medicine.
葡萄膜黑色素瘤 (UM) 是成年人中最常见的原发性眼内恶性肿瘤,其转移已知是致命的。从分子角度分析与 UM 中最常见遗传异常相关的八个基因 (GNAQ、GNA11、BAP1、SF3B1、SRSF2、EIF1AX、PLCB4 和 CYSLTR2) 以用于潜在的预后评估、早期诊断、治疗和转移,或研究已知遗传异常的各个方面都很关键。因此,本研究旨在从分子角度分析与 UM 中最常见遗传异常相关的八个基因 (GNAQ、GNA11、BAP1、SF3B1、SRSF2、EIF1AX、PLCB4 和 CYSLTR2)。通过生物信息学工具获得了 108 名 UM 患者的基因组序列和表达谱,这些工具提供了来自 TCGA 的数据。彻底确定了整体突变负荷和八个基因的突变模式,特别是。此外,还使用 PolyPhen2 和 SNAP 工具来估计 UM 中鉴定出的突变的致癌/致病变异特性。除了突变谱之外,还确定了突变的存在对基因表达和生存的影响。最后,进行了 STRING 网络分析,以更好地了解细胞过程中突变蛋白的功能关系。在八个基因中的 52 个突变中,有 27 个错义突变、16 个移码突变、6 个无义突变和 3 个剪接区突变,其中 26 个具有致病变异特性。在具有突变基因型的肿瘤中,BAP1 m-RNA 的表达显著降低(= 0.001)。对生存有重要预后意义的基因表达对高表达 BAP1(= 0.0015)和低表达 CYSLTR2(= 0.0021)的影响具有统计学意义。为了评估这种潜在破坏性疾病的现状,已经从分子角度进行了评估。定义这种分子视角对于开发靶向药物治疗和个性化药物可能很有用。