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1.安徽中医药大学,合肥 230012
2.安徽省中医药科学院 中西医结合研究所,合肥 230012
3.中药复方安徽省重点实验室,合肥 230012
Received:23 October 2021,
Published Online:26 November 2021,
Published:20 February 2022
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谷金繁,王翔,陈建等.加味小陷胸汤干预Wnt/β-catenin信号通路抑制人胃癌MGC803细胞上皮间质转化[J].中国实验方剂学杂志,2022,28(04):42-50.
GU Jin-fan,WANG Xiang,CHEN Jian,et al.Modified Xiao Xianxiongtang Inhibits Epithelial-Mesenchymal Transition of Human Gastric Cancer MGC803 Cells via Wnt/β-catenin Signaling Pathway[J].Chinese Journal of Experimental Traditional Medical Formulae,2022,28(04):42-50.
谷金繁,王翔,陈建等.加味小陷胸汤干预Wnt/β-catenin信号通路抑制人胃癌MGC803细胞上皮间质转化[J].中国实验方剂学杂志,2022,28(04):42-50. DOI: 10.13422/j.cnki.syfjx.20220325.
GU Jin-fan,WANG Xiang,CHEN Jian,et al.Modified Xiao Xianxiongtang Inhibits Epithelial-Mesenchymal Transition of Human Gastric Cancer MGC803 Cells via Wnt/β-catenin Signaling Pathway[J].Chinese Journal of Experimental Traditional Medical Formulae,2022,28(04):42-50. DOI: 10.13422/j.cnki.syfjx.20220325.
目的
2
研究加味小陷胸汤对人胃癌MGC803细胞上皮间质转化(EMT)抑制作用及与分泌型糖蛋白Wnt/
β
-连环蛋白(Wnt/
β
-catenin)通路关系。
方法
2
采用人胃癌MGC803细胞悬液种植法构建BALB/c裸鼠皮下异位移植性肿瘤动物模型。造模成功后随机分为模型组、加味小陷胸汤低、中、高剂量组(16.0,32.0,64.0 g·kg
-1
),卡培他滨组(400 mg·kg
-1
),每组8只,灌胃给药,每日1次,连续给药28 d,其中卡培他滨组给2周停1周。观察裸鼠一般状态、体质量,测量移植瘤大小,处死后称质量并计算抑瘤率;苏木素-伊红(HE)染色法观察移植瘤组织病理学变化;用实时荧光定量聚合酶链式反应(Real-time PCR),蛋白免疫印迹法(Western blot)检测Wnt1,
β
-catenin的基因和蛋白表达水平及Western blot检测基质金属蛋白酶-9(MMP-9),血管内皮生长因子(VEGF),N-钙黏蛋白(N-cadherin),E-钙黏蛋白(E-cadherin),波形蛋白(Vimentin),锌指蛋白(Snail)蛋白表达水平;酶联免疫吸附测定(ELISA)检测环氧合酶2(COX2),前列腺素E
2
(PGE
2
)的表达水平。
结果
2
各组移植瘤体积随时间呈现不同的增长趋势,模型组增长趋势最为明显,与模型组比较,加味小陷胸汤低、中、高剂量组、卡培他滨组瘤体积呈现不同程度的生长抑制、增长趋势降低,且随时间延长作用明显,给药7,14,21,28 d加味小陷胸汤低、高剂量组、卡培他滨组移植瘤体积明显降低(
P
<
0.05,
P
<
0.01),给药14,21,28 d加味小陷胸汤中剂量组移植瘤体积显著降低(
P
<
0.01)。与模型组比较,给药7,14,21,28 d,加味小陷胸汤高剂量组、卡培他滨组裸鼠移植瘤相对肿瘤体积显著降低(
P
<
0.01),给药14,21,28 d,加味小陷胸汤低、中剂量组移植瘤相对肿瘤体积明显降低(
P
<
0.05,
P
<
0.01)。与模型组比较,加味小陷胸汤低、中、高剂量组、卡培他滨组移植瘤抑瘤率显著升高(
P
<
0.01)。与模型组比较,加味小陷胸汤中低、中、高剂量组、卡培他滨组均能下调瘤组织Wnt1,
β
-catenin mRNA和蛋白的表达(
P
<
0.05,
P
<
0.01)及MMP-9,VEGF,N-cadherin,Vimentin,Snail的蛋白表达(
P
<
0.05,
P
<
0.01),上调E-cadherin蛋白的表达(
P
<
0.05,
P
<
0.01);降低COX
2
,PGE
2
含量(
P
<
0.05,
P
<
0.01)。
结论
2
加味小陷胸汤对人胃癌MGC803细胞移植瘤EMT具有抑制作用,其机制可能与Wnt/
β
-catenin通路有关。
Objective
2
To observe the inhibitory effect of modified Xiao Xianxiongtang on epithelial-mesenchymal transition (EMT) of human gastric cancer MGC803 cells and its relationship with secretory glycoprotein Wnt/
β
-catenin pathway.
Method
2
The BALB/c nude mice were implanted with human gastric cancer MGC803 cell suspension in the heterotopic subcutaneous position for inducing tumor. After successful modeling, they were randomly divided into the model group, low-, medium-, and high-dose (16.0,32.0,and 64.0 g·kg
-1
) groups of modified Xiao Xianxiongtang, and capecitabine (400 mg·kg
-1
) group, with eight mice in each group, and gavaged with the corresponding drugs, once per day, for 28 consecutive days. Those in the capecitabine group received one-week discontinuation after every two weeks of treatment. The general state and body weight of the nude mice were observed, and the transplanted tumor volume was measured. After being killed, they were weighed and the tumor inhibition rate was calculated. Hematoxylin-eosin (HE) staining was carried out for observing the pathological changes in transplanted tumor tissues. The gene and protein expression levels of Wnt1 and
β
-catenin were detected by real-time fluorescence quantitative polymerase chain reaction (Real-time PCR) and Western blot, followed by the determination of matrix metalloproteinase-9 (MMP-9), vascular endothelial growth factor (VEGF), N-cadherin, E-cadherin, Vimentin, and Snail protein expression by Western blot. The expression levels of cyclooxygenase 2 (COX2) and prostaglandin E
2
(PGE
2
) were detected by enzyme-linked immunosorbent assay (ELISA).
Result
2
It was found that the transplanted tumor in each group showed different growth trends with time, with the most obvious growth observed in the model group. Compared with the model group, the low-, medium-, and high-dose modified Xiao Xianxiongtang groups exhibited reduced tumor volume and slowed growth to varying degrees over time. After medication for days 7,14,21,and 28, the tumor volumes in the low- and high-dose modified Xiao Xianxiongtang groups and capecitabine group declined (
P
<
0.05,
P
<
0.01), and that in the medium-dose Xiao Xianxiongtang group was also remarkably reduced after medication for days 14,21,and 28 (
P
<
0.01). Compared with the model group, the high-dose modified Xiao Xianxiongtang group and capecitabine group showed a significant reduction in the relative tumor volume after treatment for days 7,14,21,28 (
P
<
0.01), and the low- and medium-dose modified Xiao Xianxiongtang groups also presented with decreased relative tumor volume after treatment for days 14,21,28 (
P
<
0.05,
P
<
0.01). Compared with the model group, the modified Xiao Xianxiongtang at low, medium, and high doses and capecitabine all increased the tumor inhibition rate to varying degrees (
P
<
0.01), down-regulated the mRNA and protein expression levels of Wnt1 and
β
-catenin in tumor tissue (
P
<
0.05,
P
<
0.01) and protein expression levels of MMP-9, VEGF, N-cadherin, Vimentin, and Snail (
P
<
0.05,
P
<
0.01), up-regulated E-cadherin protein expression (
P
<
0.05,
P
<
0.01), and reduced COX2 and PGE
2
contents (
P
<
0.05,
P
<
0.01).
Conclusion
2
Modified Xiao Xianxiongtang inhibits the EMT of human gastric cancer MGC803 cell-transplanted tumor, which may be related to Wnt/
β
-catenin pathway.
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