Experimental Study of Rapamycin Inhibiting mTOR Activation Autophagy and Regulating Ferroptosis to Reduce the Proliferation,Invasion and Migration of Cervical Cancer Cells
10.3969/j.issn.1671-7414.2025.03.008
- VernacularTitle:雷帕霉素抑制mTOR激活自噬并调控铁死亡降低宫颈癌细胞增殖、侵袭及迁移能力的实验研究
- Author:
Jianing YANG
1
;
Liran ZHANG
1
Author Information
1. 黑龙江省中医药科学院妇科,哈尔滨 150080
- Publication Type:Journal Article
- Keywords:
cervical cancer;
mammalian target of rapamycin;
autophagy;
ferroptosis;
proliferation;
migration;
invade
- From:
Journal of Modern Laboratory Medicine
2025;40(3):42-46
- CountryChina
- Language:Chinese
-
Abstract:
Objective To explore the effect and possible mechanism of rapamycin inhibiting mammalian target of rapamycin(mTOR)activation autophagy and regulating iron death on proliferation,invasion and migration of cervical cancer cells.Methods Normal cervical epithelial cells H8 and cervical cancer cells Caski were cultured and divided into H8 and Caski.Caski cells were further cultured and divided into cervical cancer,rapamycin and Erastin groups.Western blotting detected the protein levels of mTOR,Beclin1,microtubule-associated protein light chain 3 II(LC3Ⅱ),recombinant solute carrier family 7,member 11(SLC7A11)and glutathione peroxidase 4(GPX4)in the cells.The mRNA levels of mTOR,Beclin1,LC3Ⅱ,SLC7A11 and GPX4 were detected by RT-qPCR.The kit detected reactive oxygen species(ROS),glutathione(GSH)and Fe2+levels in cells.Plate cloning was used to detect the cloning ability of cells.Cell migration ability was detected by scratch test.Transwell assay was used to detect cell invasion ability.Results Compared with H8 cells,the protein expressions of mTOR,SLC7A11,GPX4 were increased in Caski cells(t=10.58,36.66,14.68).Beclin1,LC3 Ⅱ decreased protein expression(t=23.00,9.50),and the differences were statistically significant(all P<0.05).Compared with the cervical cancer group,the expressions of mTOR protein and mRNA in the rapamycin group were decreased(t=25.00,12.50),the expressions of Beclin1,LC3Ⅱ protein and mRNA were increased(t=6.84～30.31),and the differences were statistically significant(all P<0.05).The levels of GSH were decreased(t=9.15),ROS and Fe2+were increased(t=7.64,6.81),and the cell proliferation,migration and invasion ability were decreased(t=19.03,8.69,23.00),and the differences were statistically significant(all P<0.05).The proliferation ability,migration ability,and invasion ability of Caski cells in the Erastin group were decreased,and the differences were statistically significant(t=25.34,4.72,6.43,all P<0.05).Conclusion Rapamycin can reduce the proliferation,invasion and migration of cervical cancer cells by inhibiting mTOR activation of autophagy and regulating ferroptosis mediated by SLC7A11/GPX4 pathway.
