Gliomas are the most common central nervous system tumours;they are highly aggressive and have a poor prognosis. RGS16 belongs to the regulator of G-protein signalling (RGS) protein family, which plays an important ro...Gliomas are the most common central nervous system tumours;they are highly aggressive and have a poor prognosis. RGS16 belongs to the regulator of G-protein signalling (RGS) protein family, which plays an important role in promoting various cancers, such as breast cancer, pancreatic cancer, and colorectal cancer. Moreover, previous studies confirmed that let-7c-5p, a well-known microRNA, can act as a tumour suppressor to regulate the progression of various tumours by inhibiting the expression of its target genes. However, whether RGS16 can promote the progression of glioma and whether it is regulated by miR let-7c-5p are still unknown. Here, we confirmed that RGS16 is upregulated in glioma tissues and that high expression of RGS16 is associated with poor survival. Ectopic deletion of RGS16 significantly suppressed glioma cell proliferation and migration both in vitro and in vivo. Moreover, RGS16 was validated as a direct target gene of miR let-7c-5p. The overexpression of miR let-7c-5p obviously downregulated the expression of RGS16, and knocking down miR let-7c-5p had the opposite effect. Thus, we suggest that the suppression of RGS16 by miR let-7c-5p can promote glioma progression and may serve as a potential prognostic biomarker and therapeutic target in glioma.展开更多
[目的]研究RGS16基因对人肺癌发病及进展的作用。[方法]构建过表达慢病毒载体Lenti-RGS16,感染A549细胞,以CCK-8实验、平板克隆形成实验、划痕实验、FITC/PI染色法检测A549细胞行为包括增殖、克隆形成、迁移、凋亡率变化,以裸鼠成瘤实...[目的]研究RGS16基因对人肺癌发病及进展的作用。[方法]构建过表达慢病毒载体Lenti-RGS16,感染A549细胞,以CCK-8实验、平板克隆形成实验、划痕实验、FITC/PI染色法检测A549细胞行为包括增殖、克隆形成、迁移、凋亡率变化,以裸鼠成瘤实验检测A549细胞体内生长。[结果]A549细胞中RGS16基因表达量提高3.6倍,细胞生长、增殖及迁移能力分别降低73%、62.8%、88%,细胞凋亡率增加3倍;在动物成瘤实验终点时,RGS16过表达组的肿瘤体积比对照组显著减少(240 vs 1090 mm3),瘤体重量也显著降低(0.33 vs 0.95 g)。经分析TCGA数据库发现RGS16基因在肺癌组织中表达比正常对照组织中减少52.8%。[结论]RGS16基因抑制肺癌A549细胞生长、增殖及迁移,促进细胞凋亡。展开更多
基金the National Natural Science Foundation of China(Nos.81874083,82072776,82072775,81702468,81802966,81902540,81874082,and 81472353)Natural Science Foundation of Shandong Province of China(Nos.ZR2019BH057,ZR2020QH174,and ZR2021LSW025)+3 种基金the Jinan Science and Technology Bureau of Shandong Province(No.2021GXRC029)Key Clinical Research Project of Clinical Research Center of Shandong University(No.2020SDUCRCA011)Taishan Scholars of Shandong Province of China(No.tspd20210322)Scientific Research Foundation of Qilu Hospital(Qingdao)(No.QDKY2019QN03).
文摘Gliomas are the most common central nervous system tumours;they are highly aggressive and have a poor prognosis. RGS16 belongs to the regulator of G-protein signalling (RGS) protein family, which plays an important role in promoting various cancers, such as breast cancer, pancreatic cancer, and colorectal cancer. Moreover, previous studies confirmed that let-7c-5p, a well-known microRNA, can act as a tumour suppressor to regulate the progression of various tumours by inhibiting the expression of its target genes. However, whether RGS16 can promote the progression of glioma and whether it is regulated by miR let-7c-5p are still unknown. Here, we confirmed that RGS16 is upregulated in glioma tissues and that high expression of RGS16 is associated with poor survival. Ectopic deletion of RGS16 significantly suppressed glioma cell proliferation and migration both in vitro and in vivo. Moreover, RGS16 was validated as a direct target gene of miR let-7c-5p. The overexpression of miR let-7c-5p obviously downregulated the expression of RGS16, and knocking down miR let-7c-5p had the opposite effect. Thus, we suggest that the suppression of RGS16 by miR let-7c-5p can promote glioma progression and may serve as a potential prognostic biomarker and therapeutic target in glioma.
文摘[目的]研究RGS16基因对人肺癌发病及进展的作用。[方法]构建过表达慢病毒载体Lenti-RGS16,感染A549细胞,以CCK-8实验、平板克隆形成实验、划痕实验、FITC/PI染色法检测A549细胞行为包括增殖、克隆形成、迁移、凋亡率变化,以裸鼠成瘤实验检测A549细胞体内生长。[结果]A549细胞中RGS16基因表达量提高3.6倍,细胞生长、增殖及迁移能力分别降低73%、62.8%、88%,细胞凋亡率增加3倍;在动物成瘤实验终点时,RGS16过表达组的肿瘤体积比对照组显著减少(240 vs 1090 mm3),瘤体重量也显著降低(0.33 vs 0.95 g)。经分析TCGA数据库发现RGS16基因在肺癌组织中表达比正常对照组织中减少52.8%。[结论]RGS16基因抑制肺癌A549细胞生长、增殖及迁移,促进细胞凋亡。
