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1.中国人民解放军陆军第七十四集团军医院,广州 510320
2.复旦大学 附属浦东医院,上海 200120
* 刘英香,硕士,主治医师,从事肿瘤学相关研究,E-mail:xiangyingliu7008@126.com
收稿日期:2020-06-16,
网络出版日期:2020-09-17,
纸质出版日期:2021-02-20
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刘英香,王丽辉,李晓惠等.黄芩素通过抑制YAP入核调控三阴乳腺癌细胞克隆形成[J].中国实验方剂学杂志,2021,27(04):70-75.
LIU Ying-xiang,WANG Li-hui,LI Xiao-hui,et al.Baicalein Regulates Colony Formation of Triple-negative Breast Cancer Cells by Inhibiting YAP Entry into Nucleus[J].Chinese Journal of Experimental Traditional Medical Formulae,2021,27(04):70-75.
刘英香,王丽辉,李晓惠等.黄芩素通过抑制YAP入核调控三阴乳腺癌细胞克隆形成[J].中国实验方剂学杂志,2021,27(04):70-75. DOI: 10.13422/j.cnki.syfjx.20202325.
LIU Ying-xiang,WANG Li-hui,LI Xiao-hui,et al.Baicalein Regulates Colony Formation of Triple-negative Breast Cancer Cells by Inhibiting YAP Entry into Nucleus[J].Chinese Journal of Experimental Traditional Medical Formulae,2021,27(04):70-75. DOI: 10.13422/j.cnki.syfjx.20202325.
目的
2
观察黄芩素对三阴乳腺癌MDA-MB-468和MDA-MB-231细胞克隆形成能力的影响,探讨Yes相关蛋白(YAP)在其中的介导作用。
方法
2
黄芩素处理MDA-MB-468和MDA-MB-231细胞,噻唑蓝(MTT)比色法检测细胞增殖能力,平板克隆实验检测细胞克隆形成能力,免疫荧光法检测细胞YAP的细胞核分布,蛋白免疫印迹法检测细胞YAP大肿瘤抑制因子1(LATS1),YAP,磷酸化Yes相关蛋白(p-YAP)和磷酸化YAP大肿瘤抑制因子1(p-LATS1)蛋白表达水平。
结果
2
与空白组相比,5,10,20 μmol·L
-1
黄芩素对MDA-MB-468和MDA-MB-231细胞增殖无明显影响。40,80,160 μmol·L
-1
黄芩素能显著抑制MDA-MB-468和MDA-MB-231细胞增殖能力(
P
<
0.01),抑制效应存在一定剂量依赖性。黄芩素对MDA-MB-468和MDA-MB-231细胞的半数抑制浓度(IC
50
)分别为(80.3±7.2),(70.4±6.5) μmol·L
-1
。与空白组比较,黄芩素(5,10,20 μmol·L
-1
)明显剂量依赖性降低MDA-MB-468和MDA-MB-231细胞克隆形成率(
P
<
0.05,
P
<
0.01)。与空白组比较,黄芩素(10,20 μmol·L
-1
)显著剂量依赖性抑制MDA-MB-468和MDA-MB-231细胞YAP细胞核表达(
P
<
0.01)。与空白组比较,黄芩素(5,10,20 μmol·L
-1
)明显剂量依赖性上调MDA-MB-468细胞p-YAP和p-LATS1蛋白表达(
P
<
0.05,
P
<
0.01);同样,黄芩素(10,20 μmol·L
-1
)显著剂量依赖性上调MDA-MB-231细胞p-YAP和p-LATS1蛋白表达(
P
<
0.01)。
结论
2
黄芩素可通过介导YAP入核减少,从而抑制三阴乳腺癌MDA-MB-468和MDA-MB-231细胞克隆形成。
Objective
2
This study aims to observe the effect of baicalein on the clonal formation of triple negative breast cancer MDA-MB-231 and MDA-MB-468 cells, and to explore the mediation role of Yes- related protein (YAP) in it.
Method
2
MDA-MB-231 and MDA-MB-468 cells were treated with baicalein. Thiazole blue (MTT) colorimetric method was used to detect cell proliferation ability. Plate cloning experiments was used to detect the colony forming ability. Immunofluorescence method was used to detect the nuclear distribution of YAP, and Western blot test was used to detect the protein expression levels of YAP large tumor suppressor factor 1 (LATS1), YAP, phosphorylated Yes- related protein(p-YAP) and phosphorylated YAP large tumor suppressor factor 1 (p-LATS1).
Result
2
Compared with the blank group, baicalein (40, 80, 160 μmol·L
-1
) significantly inhibited the proliferation ability of MDA-MB-468 and MDA-MB-231 cells (
P
<
0.05,
P
<
0.01), and the inhibitory effect was dose-dependent. The half inhibit concentration(IC
50
) of baicalein against MDA-MB-468 and MDA-MB-231 cells were (80.3±7.2),(70.4±6.5) μmol·L
-1
, respectively. Compared with blank group, baicalein (5, 10, 20 μmol·L
-1
) had no significant effect on the proliferation of MDA-MB-468 and MDA-MB-231 cells, and the difference was not statistically significant. Compared with the blank group, baicalein (5, 10, 20 μmol·L
-1
) significantly dose-dependently reduced the cell colony formation rates of MDA-MB-468 and MDA-MB-231 cells (
P
<
0.05,
P
<
0.01), and baicalein (10, 20 μmol·L
-1
) significantly inhibited the nuclear expression of YAP in MDA-MB-468 and MDA-MB-231 cells in a dose-dependent manner(
P
<
0.01). Also, baicalin (5, 10, 20 μmol·L
-1
) significantly up-regulated p-YAP and p-LATS1 protein expressions in MDA-MB-468 cells in a dose-dependent manner (
P
<
0.05,
P
<
0.01). Baicalein (10, 20 μmol·L
-1
) significantly up-regulated p-YAP and p-LATS1 protein expressions in MDA-MB-231 cells in a dose-dependent manner (
P
<
0.01).
Conclusion
2
Baicalein can inhibit colony formation of triple negative breast cancer MDA-MB-468 and MDA-MB-231 cells by mediating the reduction of YAP entry into the nucleus.
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