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海军军医大学 长海医院,上海 200433
高薇,药师,从事医院药学研究,E-mail: m13818770574@163.com
乐佳敏,药师,从事医院药学研究,E-mail: 772996014@qq.com
收稿日期:2022-03-10,
网络出版日期:2022-06-22,
纸质出版日期:2023-01-20
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高薇,曾海荣,乐佳敏.鸦胆子苦醇通过Nrf2/HO-1通路诱导细胞铁死亡抑制胃癌细胞HGC-27增殖[J].中国实验方剂学杂志,2023,29(02):81-87.
GAO Wei,ZENG Hairong,LE Jiamin.Brusatol Suppresses Proliferation of Human Gastric Cancer HGC-27 Cells Through Inducing Ferroptosis via Nrf2/HO-1 Pathway[J].Chinese Journal of Experimental Traditional Medical Formulae,2023,29(02):81-87.
高薇,曾海荣,乐佳敏.鸦胆子苦醇通过Nrf2/HO-1通路诱导细胞铁死亡抑制胃癌细胞HGC-27增殖[J].中国实验方剂学杂志,2023,29(02):81-87. DOI: 10.13422/j.cnki.syfjx.20221628.
GAO Wei,ZENG Hairong,LE Jiamin.Brusatol Suppresses Proliferation of Human Gastric Cancer HGC-27 Cells Through Inducing Ferroptosis via Nrf2/HO-1 Pathway[J].Chinese Journal of Experimental Traditional Medical Formulae,2023,29(02):81-87. DOI: 10.13422/j.cnki.syfjx.20221628.
目的
2
观察鸦胆子苦醇对人胃癌HGC-27细胞增殖的影响及其作用机制。
方法
2
采用细胞增殖与活性检测法(CCK-8)检测不同浓度鸦胆子苦醇对HGC-27细胞增殖的影响;鸦胆子苦醇(7.5、15、30 μmol·L
-1
)作用于HGC-27细胞24 h,分析细胞克隆形成情况;活性氧荧光探针(DCFH-DA)检测细胞内活性氧(ROS)水平,脂质过氧化荧光探针(C11-BODIPY)检测细胞内脂质过氧化水平,实时荧光定量聚合酶链式反应(Real-time PCR)和蛋白免疫印迹法(Western blot)分别检测胱氨酸/谷氨酸逆向转运蛋白溶质载体家族7成员11(SLC7A11)、谷胱甘肽过氧化物酶4(GPX4)、胱氨酸/谷氨酸逆向转运蛋白溶质载体家族40成员1(SLC40A1)、转铁蛋白(TRF)、核因子E
2
相关因子2(Nrf2)、血红素加氧酶-1(HO-1) mRNA水平和蛋白表达情况。
结果
2
与空白组比较,随鸦胆子苦醇药物浓度增大,HGC-27细胞存活率逐渐降低,其半数抑制浓度(IC
50
)为15.34 μmol·L
-1
;鸦胆子苦醇组(7.5、15、30 μmol·L
-1
)细胞克隆形成明显减少(
P<
0.05,
P<
0.01),呈现浓度依赖性。与空白组比较,鸦胆子苦醇组(7.5、15、30 μmol·L
-1
)细胞内ROS,脂质过氧化水平,细胞内铁离子浓度及细胞乳酸脱氢酶(LDH)泄漏均明显升高(
P<
0.05,
P<
0.01),呈现浓度依赖性。与空白组比较,鸦胆子苦醇组(15、30 μmol·L
-1
)SLC7A11、GPX4、SLC40A1的mRNA水平和蛋白表达明显降低(
P<
0.05,
P<
0.01),TRF mRNA水平及蛋白表达明显升高(
P<
0.05,
P<
0.01),且呈浓度依赖性。与空白组比较,鸦胆子苦醇组(15、30 μmol·L
-1
)Nrf2和HO-1 mRNA水平和蛋白表达明显降低(
P<
0.05,
P<
0.01),且呈浓度依赖性。
结论
2
鸦胆子苦醇可能通过抑制Nrf2/HO-1通路诱导铁死亡抑制HGC-27细胞增殖。
Objective
2
To study effect of brusatol (BR) on proliferation of human gastric cancer HGC-27 cells and its mechanism.
Method
2
Cell counting kit-8 (CCK-8) was used to detect the survival rate of HGC-27 cells at different concentrations of BR. HGC-27 cells were treated with BR (7.5, 15, 30 μmol·L
-1
) for 24 h, and then the cell clone formation was analyzed. 2,7-Dichlorodihydrofluorescein diacetate (DCFH-DA) fluorescent probe and lipid peroxidation sensor (C11-BODIPY) were employed to detect the levels of intracellular reactive oxygen species (ROS) and lipid peroxidation, respectively. Real-time polymerase chain reaction (Real-time PCR) and Western blot were performed to detect the messenger ribonucleic acid (mRNA) and protein expressions of solute carrier family 7 member 11 (SLC7A11), glutathione peroxidase 4 (GPX4), solute carrier family 40 member 1 (SLC40A1), transferrin, nuclear factor E
2
-related factor 2 (Nrf2) and heme oxygenase-1 (HO-1), respectively.
Result
2
The survival rate of HGC-27 cells was decreased with the increase of BR concentration, and the IC
50
was 15.34 μmol·L
-1
. Compared with the conditions in blank group, the cell clone formation of BR (7.5, 15, 30 μmol·L
-1
) groups was inhibited in a dose-dependent manner (
P<
0.05,
P<
0.01), while the levels of intracellular ROS and lipid peroxidation, iron concentration, and lactic dehydrogenase (LDH) leakage were increased in a dose-dependent manner (
P<
0.05,
P<
0.01). Compared with the blank group, the BR (15, 30 μmol·L
-1
) groups lowered the mRNA and protein expressions of SLC7A11, GPX4, SLC40A1, Nrf2 and HO-1, while elevated the mRNA and protein expression of TRF in a dose-dependent manner (
P<
0.05,
P<
0.01).
Conclusion
2
BR suppressed the proliferation of HGC-27 cells through inducing ferroptosis via inhibiting Nrf2/HO-1 pathway.
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