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上海健康医学院 药学院,上海 201318
Received:27 August 2021,
Published Online:26 October 2021,
Published:20 December 2021
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张贝贝,张艳,王风仙等.基于Wnt/β-catenin调控EMT探讨氧化苦参碱联合贝伐珠单抗抗乳腺癌的体外活性机制[J].中国实验方剂学杂志,2021,27(24):109-117.
ZHANG Bei-bei,ZAHNG Yan,WANG Feng-xian,et al.Anti-breast Cancer Activities in Vitro of Oxymatrine Combined with Bevacizumab: An Exploration Focusing on EMT Regulation Through Wnt/β-catenin[J].Chinese Journal of Experimental Traditional Medical Formulae,2021,27(24):109-117.
张贝贝,张艳,王风仙等.基于Wnt/β-catenin调控EMT探讨氧化苦参碱联合贝伐珠单抗抗乳腺癌的体外活性机制[J].中国实验方剂学杂志,2021,27(24):109-117. DOI: 10.13422/j.cnki.syfjx.20212423.
ZHANG Bei-bei,ZAHNG Yan,WANG Feng-xian,et al.Anti-breast Cancer Activities in Vitro of Oxymatrine Combined with Bevacizumab: An Exploration Focusing on EMT Regulation Through Wnt/β-catenin[J].Chinese Journal of Experimental Traditional Medical Formulae,2021,27(24):109-117. DOI: 10.13422/j.cnki.syfjx.20212423.
目的
2
观察氧化苦参碱(OM)联合贝伐珠单抗(BV)对乳腺癌MCF-7细胞增殖、侵袭和迁移的作用,并基于分泌型糖蛋白(Wnt)/
β
-连环蛋白(
β
-catenin)信号通路对OM调控BV引起的上皮间质转化(EMT)的机制进行探讨。
方法
2
采用细胞增殖与活性检测(CCK-8)实验观察OM(0,0.5,1.0,2.0,4.0,8.0,16.0 mmol·L
-1
)及BV(0,0.25×10
-4
,0.50×10
-4
,1.00×10
-4
,2.00×10
-4
,4.00×10
-4
,8.00×10
-4
mmol·L
-1
)联合后对MCF-7细胞增殖的影响;通过侵袭小室法(transwell)和划痕损伤修复实验观察OM(4.0 mmol·L
-1
)与BV(2.00×10
-4
mmol·L
-1
)联合后对MCF-7细胞侵袭与迁移能力的影响;采用蛋白免疫印迹法(Western blot)观察OM(4.0 mmol·L
-1
)与BV(2.00×10
-4
mmol·L
-1
)联合后对MCF-7细胞增殖相关蛋白的影响,并对Wnt/
β
-catenin信号通路及EMT相关蛋白的表达水平进行检测。
结果
2
与空白组比较,OM(2.0,4.0,8.0,16.0 mmol·L
-1
)可呈浓度依赖性地抑制MCF-7细胞的增殖(
P
<
0.05,
P
<
0.01),而BV未表现出抑制MCF-7细胞增殖的作用,两药联合对MCF-7细胞增殖的抑制作用与OM比较差异无统计学意义。与空白组比较,OM可显著减少MCF-7细胞的迁移距离和侵袭细胞数目(
P
<
0.01),BV可明显增加MCF-7细胞的迁移距离和侵袭细胞数目(
P
<
0.05,
P
<
0.01)。与BV比较,联合后OM可显著抑制BV引起的MCF-7细胞的侵袭和迁移(
P
<
0.01)。与空白组比较,OM及两药联用可明显抑制MCF-7细胞中与细胞增殖相关蛋白激酶B(Akt)和细胞外调节蛋白激酶1/2(ERK1/2)蛋白的磷酸化(
P
<
0.01);OM及两药联用后显著降低Wnt/
β
-catenin信号通路中
β
-catenin,原癌基因(c-Myc),CD44,G
1
/S-特异性周期蛋白-D
1
(cyclin D
1
)蛋白表达(
P
<
0.05,
P
<
0.01);OM及两药联用可显著降低EMT中钙离子依赖的细胞
N
-钙黏蛋白(
N
-cadherin),波形蛋白(Vimentin)蛋白表达,增加钙离子依赖的细胞E-钙黏蛋白(E-cadherin)的表达水平(
P
<
0.01),BV组上述相关蛋白的表达相反(
P
<
0.05,
P
<
0.01)。
结论
2
OM与BV联合后OM可通过有效抑制BV引起的Wnt/
β
-catenin通路激活逆转EMT机制发挥抗乳腺癌的作用。
Objective
2
To observe the effect of oxymatrine (OM) combined with bevacizumab ( BV ) on the proliferation, invasion, and migration of breast cancer MCF-7 cells and explore the mechanism of OM in regulating BV-induced epithelial-mesenchymal transition (EMT) based on the Wnt/
β
-catenin signaling pathway.
Method
2
The effect of different concentrations of OM(0, 0.5, 1.0, 2.0, 4.0, 8.0, 16.0 mmol·L
-1
)and BV(0, 0.25×10
-4
, 0.50×10
-4
, 1.00×10
-4
, 2.00×10
-4
, 4.00×10
-4
, and 8.00×10
-4
mmol·L
-1
)on the proliferation of MCF-7 cells were detected by cell counting kit-8(CCK-8)assay. The effect of OM(4.0 mmol·L
-1
) combined with BV(2.00×10
-4
mmol·L
-1
)on the invasion and migration of MCF-7 cells were observed in transwell and scratch repair tests. Western blot was conducted to investigate the effect of OM(4.0 mmol·L
-1
)combined with BV (2.00×10
-4
mmol·L
-1
) on proliferation-related proteins in MCF-7 cells, followed by the detection of the expression levels of Wnt/
β
-catenin signaling pathway- and EMT-related proteins.
Result
2
Compared with the blank group, OM (2.0,4.0,8.0,16.0 mmol·L
-1
) inhibited the proliferation of MCF-7 cells in a concentration-dependent manner (
P
<
0.01), while BV did not show the inhibitory effect against the proliferation of MCF-7 cells. The inhibitory effect of the combination of the two drugs on the proliferation of MCF-7 cells was not significantly different from that of OM. Compared with the blank group, OM significantly reduced the migration distance of MCF-7 cells and the number of invaded cells(
P
<
0.01), while BV increased the migration distance of MCF-7 cells and the number of invaded cells (
P
<
0.05,
P
<
0.01). Compared with BV, its combination with OM significantly inhibited the invasion and migration of MCF-7 cells induced by BV (
P
<
0.01). Compared with the blank group, both OM and the combined medication obviously inhibited the phosphorylation of proliferation-related protein kinase B(Akt) and extracellular-signal-regulated protein kinase 1/2 (ERK1/2)in MCF-7 cells (
P
<
0.01) and down-regulated the protein expression levels of
β
-catenin, proto-oncogene (c-Myc), CD44, and G
1
/S-specific cyclin D
1
in Wnt/
β
-catenin signaling pathway (
P
<
0.05,
P
<
0.01). Besides, OM and the combination of two drugs both significantly reduced the protein expression levels of calcium-dependent cell adhesion protein
N
-cadherin and Vimentin in EMT, whereas increased the expression of calcium-dependent cell adhesion protein E-cadherin(
P
<
0.01). However, the expression of the above-mentioned proteins in the BV group was reversed (
P
<
0.05,
P
<
0.01).
Conclusion
2
After the combination with BV, OM plays an anti-breast cancer role by effectively inhibiting the activation of Wnt/
β
-catenin pathway induced by BV and reversing EMT.
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