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1.712000 陕西 咸阳,陕西中医药大学: 附属医院肿瘤科
2.712000 陕西 咸阳,陕西中医药大学: 药学院
3.712000 陕西 咸阳,陕西中医药大学: 基础医学院
[肖海娟,E-mail: daisytcm@hotmail.comXIAO Haijuan, E-mail: daisytcm@hotmail.com
收稿:2021-03-01,
修回:2021-04-27,
纸质出版:2021-08-30
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千维娜, 李治, 方瑜, 等. 吴茱萸碱通过MAPK信号通路抑制人胃癌细胞的体外实验研究[J]. 第三军医大学学报, 2021,43(16):1535-1542.
Weina QIAN, Zhi LI, Yu FANG, et al. Anti-tumor mechanism of evodiamine on gastric cancer cells
千维娜, 李治, 方瑜, 等. 吴茱萸碱通过MAPK信号通路抑制人胃癌细胞的体外实验研究[J]. 第三军医大学学报, 2021,43(16):1535-1542. DOI: 10.16016/j.1000-5404.202103002.
Weina QIAN, Zhi LI, Yu FANG, et al. Anti-tumor mechanism of evodiamine on gastric cancer cells
目的
2
探讨吴茱萸碱通过丝裂原活化蛋白激酶(mitogen-activated protein kinase
MAPK)信号通路对人胃癌细胞的抑制作用。
方法
2
应用MTT法对SGC-7901细胞活性进行评定。以8、16、32 μmol/L吴茱萸碱作用胃癌SGC-7901细胞(记为A
1
组,A
2
组,A
3
组),另设置相同浓度吴茱萸碱处理后的细胞,加入p38抑制剂(记为B
1
组,B
2
组,B
3
组),对照组用细胞培养液处理作为空白对照。Annexin V-FITC/PI法观察细胞凋亡,PI染色法观察细胞周期,Western blot检测凋亡相关蛋白Bcl-2、cleaved-caspase-3,划痕愈合实验评价细胞迁移抑制情况,蛋白质印迹法检测c-dc2、cdc25C、cyclin B1及p-ERK、p-p38蛋白水平表达。
结果
2
吴茱萸碱能够阻碍SGC-7901细胞增殖,细胞活性随着浓度和时间的增加而降低,24、48 h的IC
50
分别是16.78、7.28 μmol/L。
与对照组(0.06%)比较,A组SGC-7901细胞凋亡比例(18.72%、31.08%、52.17%)增加,G
2
/M细胞周期阻滞,与A组比较,B组SGC-7901细胞凋亡比例减少,G
2
/M细胞周期阻滞减弱,G
2
/M期调控蛋白cdc2、cdc25C、cyclin B1水平下调(
P
均<0.05)。划痕愈合实验表明SGC-7901细胞的细胞划痕愈合率伴随吴茱萸碱浓度升高而降低;与A组(59.13%、23.15%、18.31%)比较,B组细胞划痕愈合率(63.17%、55.27%、34.08%)升高(
P
<0.05)。Western blot结果表明吴茱萸碱处理Bcl-2、cleaved-caspase-3水平上调,SGC-7901细胞MAPK通路蛋白p-ERK水平下调,p-p38表达水平上调(
P
<0.05)。与A组比较,B组cdc2、cdc25C、cyclin B1表达上调,Bcl-2、cleaved-caspase-3水平显著下降,MAPK通路蛋白p-ERK水平上调,p-p38水平下调(
P
<0.05)。
结论
2
吴茱萸碱对胃癌细胞有抑制作用,其机制是通过MAPK信号通路下调p-p38蛋白、上调凋亡蛋白实现。
Objective
2
To investigate the anti-tumor effect of evodiamine on gastric cancer cells
via
the MAPK signaling pathway.
Methods
2
MTT assay was used to assess the cell viability of SGC-7901 cells after the treatment of 8
16 and 32 μmol/L evocarpine (denoted as A
1
group
A
2
group
A
3
group). The effect of p38 inhibitor on the above cells (denoted as B
1
group
B
2
group
B
3
group) were studied. The blank control cell group was the cells treated with culture medium. Annexin V-FITC/PI was used to observe cell apoptosis
PI staining to observe cell cycle
Western blotting to measure apoptosis-related proteins Bcl-2 and cleaved-caspase-3
and scratch healing test to evaluate the inhibitory effect on cell migration. Western blotting was employed to detect the expression levels of c-dc2
cdc25C
cyclin B1
and p-ERK and p-p38.
Results
2
Evodiamine negatively inhibited the proliferation of SGC-7901 cells in a dose-dependent and time-dependent manner. The IC
50
values at 24 and 48 h were 16.78 and 7.28 μmol/L
respectively. Compared with the control group (0.06%)
the apoptotic rate of SGC-7901 cells was increased in groups A
1
A
2
and A
3
(18.72%
31.08% and 52.17%)
and the cells arrested at G
2
/M phase. The proportion of apoptotic cells in group B was decreased
there were less cells arrested at G
2
/M phase
and the expression of G
2
/M phase regulatory proteins CDC2
CDC25C and Cyclin B1 were down-regulated when compared with group A (all
P
<
0.05). The scratch healing test showed that the healing rate of SGC-7901 cells was decreased with the increase of evodiamine concentration. Compared with groups A
1
A
2
and A
3
(59.13%
23.15% and 18.31%)
the rate was increased in groups B
1
B
2
and B
3
(63.17%
55.27%
34.08%
P
<
0.05). Western blot results indicated that evodiamine treatment induced the up-regulation of Bcl-2 and cleaved caspase-3
down-regulation of p-ERK
and obvious elevation of p-p38 (
P
<
0.05). Compared with group A
the expression levels of CDC2
CDC25C and Cyclin B1 were increased
those of Bcl-2 and cleaved caspase-3 were significantly decreased
while that of p-ERK was up-regulated and that of p-p38 was down-regulated in group B (
P
<
0.05).
Conclusion
2
Evodiamine shows anti-tumor effect on gastric cancer cells
and it is realized by the down-regulation of p-p38 protein and up-regulation of apoptosis-related proteins through MAPK signaling pathway.
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