RNA-Binding Motif Protein RBM47 Promotes Invasiveness of Glioblastoma Through Activation of Epithelial-to-Mesenchymal Transition Program.

IF 1.1 4区 生物学 Q4 GENETICS & HEREDITY Genetic testing and molecular biomarkers Pub Date : 2023-12-01 DOI:10.1089/gtmb.2023.0368
Yi-Qi Xing, Ting-Zhun Zhu
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Abstract

Background: RNA-binding motif proteins (RBMs) have been widely implicated in the tumorigenesis of multiple human cancers but rarely investigated in glioblastoma (GBM). Methods: The expression level of RBM47 and its correlation with prognosis of GBM were examined using bioinformatics, quantitative reverse transcription PCR, and Western blot analysis. The colony formation assay and Cell Counting Kit-8 assay were used to determine the biological role of RBM47 in GBM. To measure invasiveness we used the wound healing assay and transwell assay. The regulatory relationship between RBM47 and the epithelial-to-mesenchymal transition (EMT) was examined by Western blot analysis and bioinformatic analysis. Results: Through integrative analysis of clinical proteomic and genomic tumor datasets, we found that RBM47 is significantly upregulated in GBM mesenchymal subtype, and its high expression is correlated with poor prognosis. In in vitro biological experiments, we observed a significant inhibitory effect of RBM47 knockdown on colony formation and cell growth using GBM cell lines. Conversely, overexpression of RBM47 restored and accelerated these processes. Moreover, in vitro, wound healing assays demonstrated the role of RBM46 in promoting and cell migration and invasion. Mechanistically, RBM47 enhances invasive capacity through the activation of the EMT program. In RBM47-knockdown cells, the expression levels of Vimentin and CD44 were suppressed, and the level of E-cadherin was increased. Conclusions: Taken together our results demonstrate the tumor promoting characteristics of RBM46 and suggest that it could be used both as a therapeutic target and prognostically.

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RNA 结合元件蛋白 RBM47 通过激活上皮细胞向间质转化程序促进胶质母细胞瘤的侵袭性
背景:RNA 结合基调蛋白(RBMs)被广泛认为与多种人类癌症的肿瘤发生有关,但对胶质母细胞瘤(GBM)的研究却很少。研究方法采用生物信息学、反转录定量 PCR 和 Western 印迹分析法研究了 RBM47 的表达水平及其与 GBM 预后的相关性。为了确定 RBM47 在 GBM 中的生物学作用,我们使用了集落形成试验和细胞计数试剂盒-8 试验。为了测量侵袭性,我们使用了伤口愈合试验和转孔试验。通过 Western 印迹分析和生物信息学分析研究了 RBM47 与上皮细胞向间质转化(EMT)之间的调控关系。结果通过对临床蛋白质组和基因组肿瘤数据集的综合分析,我们发现RBM47在GBM间质亚型中显著上调,且其高表达与预后不良相关。在体外生物学实验中,我们观察到 RBM47 基因敲除对 GBM 细胞系的集落形成和细胞生长有明显的抑制作用。相反,过表达 RBM47 则会恢复并加速这些过程。此外,体外伤口愈合试验也证明了 RBM46 在促进细胞迁移和侵袭方面的作用。从机制上讲,RBM47 通过激活 EMT 程序增强了侵袭能力。在 RBM47 敲除的细胞中,Vimentin 和 CD44 的表达水平受到抑制,而 E-cadherin 的水平则有所提高。结论综上所述,我们的研究结果证明了 RBM46 的肿瘤促进特性,并表明它既可作为治疗靶点,也可用于预后分析。
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来源期刊
CiteScore
2.50
自引率
7.10%
发文量
63
审稿时长
1 months
期刊介绍: Genetic Testing and Molecular Biomarkers is the leading peer-reviewed journal covering all aspects of human genetic testing including molecular biomarkers. The Journal provides a forum for the development of new technology; the application of testing to decision making in an increasingly varied set of clinical situations; ethical, legal, social, and economic aspects of genetic testing; and issues concerning effective genetic counseling. This is the definitive resource for researchers, clinicians, and scientists who develop, perform, and interpret genetic tests and their results. Genetic Testing and Molecular Biomarkers coverage includes: -Diagnosis across the life span- Risk assessment- Carrier detection in individuals, couples, and populations- Novel methods and new instrumentation for genetic testing- Results of molecular, biochemical, and cytogenetic testing- Genetic counseling
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