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上海交通大学医学院 附属瑞金医院,上海 200025
张凯媛,在读硕士,从事中西医结合防治肿瘤研究,E-mail:kaikai_zhang0628@163.com
郑岚,硕士,主任医师,硕士生导师,从事中西医结合防治肿瘤临床及研究,Tel:021-64370045-680502,E-mail:windy9453@126. Com
收稿日期:2021-02-09,
网络出版日期:2021-04-22,
纸质出版日期:2021-06-20
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张凯媛,吕玲玲,陈敬贤等.莪术二酮对MDA-MB-231细胞周期和凋亡的影响[J].中国实验方剂学杂志,2021,27(12):74-81.
ZHANG Kai-yuan,LYU Ling-ling,CHEN Jing-xian,et al.Effect of Curdione on MDA-MB-231 Cell Cycle and Apoptosis[J].Chinese Journal of Experimental Traditional Medical Formulae,2021,27(12):74-81.
张凯媛,吕玲玲,陈敬贤等.莪术二酮对MDA-MB-231细胞周期和凋亡的影响[J].中国实验方剂学杂志,2021,27(12):74-81. DOI: 10.13422/j.cnki.syfjx.20211298.
ZHANG Kai-yuan,LYU Ling-ling,CHEN Jing-xian,et al.Effect of Curdione on MDA-MB-231 Cell Cycle and Apoptosis[J].Chinese Journal of Experimental Traditional Medical Formulae,2021,27(12):74-81. DOI: 10.13422/j.cnki.syfjx.20211298.
目的
2
探讨莪术二酮对三阴性乳腺癌细胞MDA-MB-231增殖、凋亡和细胞周期的作用。
方法
2
体外培养MDA-MB-231细胞,以卡培他滨作为阳性对照,采用细胞增殖与活性检测(CCK-8)法检测不同浓度的莪术二酮(125,250,500,1 000,2 000 μmol·L
-1
)作用细胞24,48 h后对细胞活力的影响;选取3个有效抑制增殖的莪术二酮浓度(250,500,1 000 μmol·L
-1
)进行后续实验。流式细胞术结合碘化丙啶(PI)染色法检测莪术二酮对细胞周期的影响;增设高浓度组(2 000 μmol·L
-1
),用JC-1法检测莪术二酮对细胞线粒体膜电位的影响,并采用流式细胞术结合Annexin V-FITC/PI双染色法检测细胞凋亡的情况;蛋白免疫印迹法(Western blot)检测莪术二酮作用后细胞中周期调控和凋亡相关蛋白表达的变化。
结果
2
与空白组比较,250,500,1 000,2 000 μmol·L
-1
莪术二酮对细胞增殖有显著抑制作用(
P
<
0.01),效果呈浓度和时间依赖性,24 h和48 h的半抑制浓度(IC
50
)分别为1 607,1 401 μmol·L
-1
;250,500,1 000 μmol·L
-1
莪术二酮可将细胞阻滞在G
1
期;250 μmol·L
-1
莪术二酮对细胞线粒体膜电位无影响,500,1 000,2 000 μmol·L
-1
莪术二酮可使细胞线粒体膜电位明显下降(
P
<
0.05,
P
<
0.01);250,500,1 000 μmol·L
-1
莪术二酮可使凋亡细胞比例明显增加(
P
<
0.05,
P
<
0.01);各浓度莪术二酮可使B淋巴细胞瘤-2相关X蛋白(Bax)/ B淋巴细胞瘤-2(Bcl-2)明显增加(
P
<
0.05,
P
<
0.01),半胱氨酸天冬氨酸蛋白水解酶-3(Caspase-3)蛋白表达量无明显变化,而Caspase-9,cleaved Caspase-9,cleaved Caspase-3,p53和p21蛋白表达量均有所增加(
P
<
0.05)。
结论
2
一定浓度的莪术二酮能抑制MDA-MB-231细胞的增殖,可能与其阻滞细胞周期、诱导细胞凋亡有关。
Objective
2
To investigate the effects of curdione on the proliferation, apoptosis and cell cycle of triple negative breast cancer cell line MDA-MB-231.
Method
2
MDA-MB-231 cells were cultured
in vitro
with capecitabine (positive control) and curdione at different concentrations (125, 250, 500, 1 000, and 2 000 μmol·L
-1
), respectively, for detecting their viability using the cell counting kit-8 (CCK-8) at 24 and 48 h. Three effective inhibitory concentrations (250, 500, and 1 000 μmol·L
-1
) against cell proliferation were selected for subsequent experiments. The effect of curdione on cell cycle was determined by flow cytometry combined with propidium iodide (PI) staining. After the set-up of high-concentration (2 000 μmol·L
-1
) group, the effect of curdione on cell mitochondrial membrane potential was measured by JC-1(5,5,6,6-tetrachloro-1,1,3,3-tetraethylbenzimidazolylcarbocyanine iodide) staining, followed by the detection of cell apoptosis by flow cytometry combined with Annexin V-FITC/PI double staining. The changes in cell cycle status and apoptosis-related protein expression following curdione intervention were assayed by Western blot.
Result
2
Compared with the blank control, curdione at 250, 500, 1 000, and 2 000 μmol·L
-1
significantly inhibited the proliferation of MDA-MB-231 cells (
P
<
0.01), exhibiting a concentration- and time-response relationship. The half maximal inhibitory concentration (IC
50
) values at 24 and 48 h were 1 607 and 1 401 μmol·L
-1
, respectively. Curdione at 250, 500, and 1 000 μmol·L
-1
arrested cells in G
1
phase. Curdione at 250 μmol·L
-1
had no effect on cell mitochondrial membrane potential, which, however, declined significantly in the 500, 1 000, and 2 000 μmol·L
-1
groups (
P
<
0.05,
P
<
0.01). Curdione at 250, 500, and 1 000 μmol·L
-1
obviously increased the proportion of apoptotic cells (
P
<
0.05,
P
<
0.01). Curdione at each concentration elevated the Bcl-2-associated X protein (Bax)/B-cell lymphoma 2 (Bcl-2) ratio (
P
<
0.05,
P
<
0.01), but did not change the cysteinyl aspartate-specific protease-3 (Caspase-3) expression. The protein expression levels of Caspase-9, cleaved Caspase-9, cleaved Caspase-3, p53, and p21 were up-regulated (
P
<
0.05).
Conclusion
2
A certain concentration of curdione inhibits the proliferation of MDA-MB-231 cells, which may be related to its efficacy in arresting cell cycle and inducing apoptosis.
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