【中圖分類號】 R739.41 【文獻標志碼】A 【文章編號】1672-7770(2025)02-0181-08
Abstract: Objective To investigate the effect FMNLl on the proliferation, migration and invasion glioma cells, and to provide a new potential target for the clinical treatment glioma patients. MethodsThe Cancer Genome Atlas(TCGA) and Chinese Glioma Genome Atlas (CGGA) databases were used to explore the relationship between FMNLl and glioma grade and prognosis patients. The effect FMNLl on the proliferation, migration and invasion glioma cells was investigated by CCK-8, cell scratch and Transwell migration and invasion function experiments. Western blot(WB) was used to detect the epithelial mesenchymal transition(EMT)in U251-shFMNLl, U251-OEFMNLl, U87-OEFMNLl and LN229-OEFMNLl cell lines Transition (EMT), and to explore the effect FMNLl on EMT. Results The database clinical samples showed that the expression level FMNLl was positively correlated with the WHO grade glioma and significantly affected the survival time glioma patients. Knocking down or up-regulating the expression FMNLl had a significant effect on the proliferation, migration, and invasive ability glioma cells. The results WB showed that knocking down the expression FMNLl significantly elevated the expression E-cadherin expresson was significantly elevated, while the expression N-cadherin and Vimentin was significantly decreased after knocking down the expression FMNLI. After up-regulating the expression FMNLl, the expression E-cadherin was significantly decreased, while the expression N-cadherin and Vimentin was significantly increased. The expression level FMNLl is closely related to the WHO grade and the prognosis
glioma patients. As a cancer promoting factor, FMNLl can significantly improve the proliferation, migration and invasion ability glioma cell, and at the same time FMNLl promotes the EMT process glioma cells.
Key words: glioma; FMNLl ; proliferation; migration; invasion; EMT
膠質瘤是顱內最常見的原發性惡性腦腫瘤,大約占顱內腫瘤的"
"。雖然膠質瘤較其他腫瘤的發病率低,但是具有侵襲性強、增殖力旺盛、極具破壞性和致命性等特征,導致膠質瘤患者的預后極差、死亡率極高。自2005年以來其治療標準基本保持不變,即最大程度手術安全切除,然后術后輔以聯合放化療治療[2],但最終因各種原因導致生存率并未得到顯著提高,患者總的中位生存期僅提高了2個月。因此,在膠質瘤相關基因的研究中,確定更多新型分子靶點,并制定個性化的治療方案,對于提高膠質瘤患者生存率十分緊迫。
FMNL1編碼白細胞中的成蛋白關聯蛋白,是成蛋白(Formin)家族中的亞型之一。它的主要功能是協調肌肉的運動蛋白質聚合,增加細胞的運動能力[3]。FMNLI作為成蛋白中的一員,在多種惡性腫瘤中高度表達,并調節腫瘤細胞的增殖、遷移和侵襲能力[4-7];不僅如此,FMNLI在膠質母細胞瘤(glioblastoma,GBM)患者中可作為預后不良的獨立預測因子,是未來具有發展潛力的治療靶點[3]。本研究前期的生信分析結果發現FMNLI的表達水平與膠質瘤的分級呈正相關,并且與患者5年生存期負相關,考慮到膠質瘤患者的不良預后及治療選擇的局限性,探索FMNLI對膠質瘤細胞生物學行為的影響及其背后的機制變得非常重要,這將有助于未來確定新的治療方向并擬定更科學的治療方案。
本研究通過構建FMNLI的敲降/過表達細胞株,進行CCK-8試驗、細胞克隆……