miR-607/CANT1 轴在肺鳞癌中的作用及机制。

The effect and mechanism of miR-607/CANT1 axis in lung squamous carcinoma.

机构信息

Department of Integrative Medicine Oncology, Zibo Bashan Wanjie Hospital, Zibo.

Emergency department, Rizhao Central Hospital, Rizhao.

出版信息

Anticancer Drugs. 2021 Aug 1;32(7):693-702. doi: 10.1097/CAD.0000000000001045.

Abstract

Lung squamous carcinoma (LUSC) is the second most frequent subtype of non-small cell lung cancer. Rarely gene alterations are identified in LUSC. Therefore, identifying LUSC-related genes to explain the relevant molecular mechanism is urgently needed. A potential biomarker, calcium-activated nucleotidase 1 (CANT1), was elevated in tissues of LUSC patients relative to normal cases based on the TCGA and/or GTEx database. CCK-8 and transwell tests were then implemented to measure the proliferative, invasive and migratory capacities, and showed that knockdown of CANT1 blocked LUSC cells proliferation. miR-607, predicted as an upstream factor for CANT1, was declined in LUSC using TargetScan analysis and luciferase activity test. Low miR-607 expression was related with unfavorable outcomes of LUSC patients. Moreover, miR-607 downregulation elevated cell viability, invasion and migration in LUSC cells, which was antagonized by si-CANT1. GEPIA website was accessed to estimate the relevance between CANT1 and epithelial-mesenchymal transition (EMT)-related positive factors. The protein levels of Fibronectin, Vimentin, Snail and β-catenin were altered due to the abnormal CANT1 and miR-607 expression. Together, these data unveiled that miR-607/CANT1 pair may exert a vital role in the progression of LUSC through mediating EMT process, which would furnish an available therapeutic therapy for LUSC.

摘要

肺鳞癌(LUSC)是非小细胞肺癌中第二常见的亚型。在 LUSC 中很少发现基因改变。因此,迫切需要鉴定与 LUSC 相关的基因,以解释相关的分子机制。基于 TCGA 和/或 GTEx 数据库,钙激活核苷酸酶 1(CANT1)作为一种潜在的生物标志物,在 LUSC 患者的组织中相对于正常病例升高。然后进行 CCK-8 和 Transwell 试验来测量增殖、侵袭和迁移能力,结果表明 CANT1 的敲低阻止了 LUSC 细胞的增殖。靶标扫描分析和荧光素酶活性试验表明,miR-607 预测为 CANT1 的上游因子,在 LUSC 中表达下调。低 miR-607 表达与 LUSC 患者的不良预后相关。此外,miR-607 下调可增强 LUSC 细胞的活力、侵袭和迁移,而 si-CANT1 可拮抗其作用。访问 GEPIA 网站可评估 CANT1 与上皮-间充质转化(EMT)相关阳性因子之间的相关性。由于 CANT1 和 miR-607 的异常表达,纤维连接蛋白、波形蛋白、Snail 和 β-连环蛋白的蛋白水平发生改变。总之,这些数据表明,miR-607/CANT1 对可能通过介导 EMT 过程在 LUSC 的进展中发挥重要作用,为 LUSC 提供了一种可行的治疗方法。

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