Chen Lihong, Li Mengdan, Li Qi, Xu Min, Zhong Wenting
International Medical Center, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi, 710061, China.
Cardiovascular Department, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi, 710061, China.
Mol Cell Probes. 2020 Oct;53:101623. doi: 10.1016/j.mcp.2020.101623. Epub 2020 Jun 27.
Tripartite motif 47 (TRIM47), a member of the TRIM protein family, plays a crucial role in tumor development and progression. However, the role of TRIM47 in glioma has not been investigated. In the present study, we investigated the expression of TRIM47 in glioma and explored the role of TRIM47 in glioma proliferation and migration both in vitro and in vivo. Our results showed that TRIM47 expression was significantly increased in glioma tissues compared to the normal brain tissues. Knockdown of TRIM47 in U87 and U251 cells inhibited cell proliferation, as well as cell migration and invasion. TRIM47 knockdown caused significant increase in E-cadherin expression and remarkable decrease in N-cadherin and vimentin expressions in both U87 and U251 cells. In vivo assay proved that knockdown of TRIM47 prevented tumor growth of glioma. Furthermore, TRIM47 silencing significantly inhibited the activation of Wnt/β-catenin pathway. Additionally, treatment with LiCl reversed the inhibitory effects of TRIM47 knockdown on cell proliferation and migration in U87 cells. In conclusion, these findings indicated that knockdown of TRIM47 suppressed cell proliferation and metastasis of glioma both in vitro and in vivo. TRIM47 exerted an oncogenic role in glioma and might be a therapeutic target for the treatment of glioma.
三联基序蛋白47(TRIM47)是TRIM蛋白家族的一员,在肿瘤的发生和发展中起着关键作用。然而,TRIM47在胶质瘤中的作用尚未得到研究。在本研究中,我们调查了TRIM47在胶质瘤中的表达情况,并在体外和体内探讨了TRIM47在胶质瘤增殖和迁移中的作用。我们的结果显示,与正常脑组织相比,TRIM47在胶质瘤组织中的表达显著增加。在U87和U251细胞中敲低TRIM47可抑制细胞增殖以及细胞迁移和侵袭。在U87和U251细胞中,敲低TRIM47导致E-钙黏蛋白表达显著增加,N-钙黏蛋白和波形蛋白表达显著降低。体内实验证明,敲低TRIM47可抑制胶质瘤的肿瘤生长。此外,TRIM47沉默显著抑制Wnt/β-连环蛋白信号通路的激活。另外,用氯化锂处理可逆转TRIM47敲低对U87细胞增殖和迁移的抑制作用。总之,这些发现表明,敲低TRIM47在体外和体内均能抑制胶质瘤细胞的增殖和转移。TRIM47在胶质瘤中发挥致癌作用,可能是治疗胶质瘤的一个靶点。