Zhu Jun, Lu Xiang-Dong, Si Feng, Song Chun-Yu, Meng Qing-Hai
Department of Neurosurgery, Brain Hospital, Affiliated Hospital of Qingdao UniversityQingdao, China; Department of Neurosurgery, People's Hospital of Laiwu CityLaiwu, China.
Department of Neurosurgery, People's Hospital of Laiwu City Laiwu, China.
Int J Clin Exp Pathol. 2015 Nov 1;8(11):13921-7. eCollection 2015.
The present study was performed to investigate the effect of retinoic acid amide (RAA) on the expression of integrin α3β1, rate of cell proliferation and migration in p53-deficient glioma cell line, LN-308. The results revealed promotion of integrin α3 expression, reduction in proliferation and migration in RAA treated cells compared to the control LN-308 glioma cells. Promotion of RAA induced integrin α3β1 expression led to the enhancement in cyclin-dependent kinase nuclear localization and activation of Akt pathway. In addition, RAA treatment inhibited the expression of nuclear factor-κB, Bcl-2 and epidermal growth factor receptor (EGFR). These factors are responsible for promoting the rate of cell proliferation and survival in the carcinoma cells. Thus RAA treatment inhibits rate of LN-308 glioma cell proliferation and migration through increase in integrin α3β1 expression and activation of Akt pathway. Therefore, RAA can be of therapeutic importance for the treatment of glioma.
本研究旨在探讨维甲酸酰胺(RAA)对p53基因缺失的胶质瘤细胞系LN-308中整合素α3β1表达、细胞增殖速率及迁移的影响。结果显示,与对照LN-308胶质瘤细胞相比,RAA处理的细胞中整合素α3表达增加,增殖和迁移减少。RAA诱导的整合素α3β1表达增加导致细胞周期蛋白依赖性激酶核定位增强及Akt通路激活。此外,RAA处理抑制了核因子κB、Bcl-2和表皮生长因子受体(EGFR)的表达。这些因子负责促进癌细胞的增殖速率和存活。因此,RAA处理通过增加整合素α3β1表达和激活Akt通路来抑制LN-308胶质瘤细胞的增殖和迁移速率。所以,RAA对胶质瘤治疗可能具有重要的治疗意义。