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扬州大学 医学院,国家中医药管理局胃癌毒邪论治重点研究室,扬州大学-扬州市肿瘤研究所, 江苏 扬州 225001
Received:04 June 2022,
Published Online:13 September 2022,
Published:05 April 2023
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罗园园,冯心怡,褚泽文等.茯苓酸通过Smads调控MMP/TIMP平衡抑制肾癌细胞侵袭转移的机制[J].中国实验方剂学杂志,2023,29(07):76-83.
LUO Yuanyuan,FENG Xinyi,CHU Zewen,et al.Mechanism of Pachymic Acid in Inhibiting Invasion and Metastasis of Renal Carcinoma Cells via Regulating MMP/TIMP Balance by Smads[J].Chinese Journal of Experimental Traditional Medical Formulae,2023,29(07):76-83.
罗园园,冯心怡,褚泽文等.茯苓酸通过Smads调控MMP/TIMP平衡抑制肾癌细胞侵袭转移的机制[J].中国实验方剂学杂志,2023,29(07):76-83. DOI: 10.13422/j.cnki.syfjx.202202127.
LUO Yuanyuan,FENG Xinyi,CHU Zewen,et al.Mechanism of Pachymic Acid in Inhibiting Invasion and Metastasis of Renal Carcinoma Cells via Regulating MMP/TIMP Balance by Smads[J].Chinese Journal of Experimental Traditional Medical Formulae,2023,29(07):76-83. DOI: 10.13422/j.cnki.syfjx.202202127.
目的
2
探讨茯苓中的三萜类化合物茯苓酸(PA),对肾癌侵袭转移的作用及机制。
方法
2
采用细胞增殖与活性检测-8(CCK-8)试剂盒检测PA(0、20、40、80、160 μmol·L
-1
)对细胞存活率的影响,并筛选PA浓度用于后续实验。采用克隆形成实验评估PA(0、20、40、80 μmol·L
-1
)对细胞增殖的作用。细胞黏附实验用来观察PA(0、20、40、80 μmol·L
-1
)对细胞黏附能力的效果。划痕实验和Transwell侵袭实验用来检测PA(0、20、40、80 μmol·L
-1
)对细胞侵袭转移的影响。高内涵成像技术进一步动态观察和验证PA(0、20、40、80 μmol·L
-1
)对细胞运动的抑制作用。PA(0、20、40、80 μmol·L
-1
)对细胞中侵袭转移相关蛋白基质金属蛋白酶/基质金属蛋白酶组织抑制因子(MMP/TIMP)和相关通路关键蛋白Smads表达的影响通过蛋白免疫印迹法(Western blot)来检测。
结果
2
CCK-8结果显示,与空白组比较,PA组细胞存活率显著降低(
P
<
0.01),24 h时PA对ACHN细胞的半数抑制浓度(IC
50
)为70.42 μmol·L
-1
。克隆形成实验显示,与空白组比较,PA组细胞克隆群数目显著减少(
P
<
0.01)。细胞黏附实验显示,与空白组比较,PA组细胞的黏附数量显著减少(
P
<
0.01)。划痕实验表明,与空白组比较,PA组细胞的划痕愈合率降低(
P
<
0.05,
P
<
0.01)。Transwell侵袭实验显示,与空白组比较,PA组细胞的穿膜数量减少(
P
<
0.01)。高内涵成像技术表明,与空白组比较,PA组细胞累计迁移距离更短(
P
<
0.01)。Western blot结果表明,与空白组比较,PA组MMP-2、MMP-9蛋白的表达降低(
P
<
0.01),TIMP-1蛋白的表达升高(
P
<
0.01)。此外,与空白组比较,PA组Smad2、Smad3蛋白的表达降低(
P
<
0.01)。
结论
2
PA可抑制肾癌细胞的增殖、侵袭转移,其机制可能是通过Smad2/3调控MMP/TIMP的稳态平衡。
Objective
2
To investigate the effect and mechanism of pachymic acid (PA) in Poria on the invasion and metastasis of renal carcinoma cells.
Method
2
The effect of PA (0, 20, 40, 80, 160 μmol·L
-1
) on cell viability was detected by cell counting kit-8(CCK-8), and the dose of PA was selected for subsequent experiments. The effect of PA (0, 20, 40, 80 μmol·L
-1
) on cell proliferation was evaluated by colony formation assay. The effect of PA (0, 20, 40, 80 μmol·L
-1
) on cell adhesion ability was observed by cell adhesion assay. The effect of PA (0, 20, 40, and 80 μmol·L
-1
) on cell invasion and metastasis was investigated by Wound healing assay and Transwell invasion assay. The inhibitory effect of PA (0, 20, 40, 80 μmol·L
-1
) on cell motility was further observed and verified by high-content imaging technology. The effects of PA (0, 20, 40, 80 μmol·L
-1
) on the expression of matrix metalloproteinase (MMP)/tissue inhibitor of metalloproteinasas (TIMP) related to invasion and metastasis and Smads were detected by Western blot.
Result
2
CCK-8 results showed that compared with the blank group, the PA groups showed decreased cell viability(
P
<
0.01), with the half-maximal inhibitory concentration (IC
50
) of ACHN cells of 70.42 μmol·L
-1
at 24 h. Colony formation assay showed that the number of cell clonal groups in the PA groups was reduced compared with that in the blank group(
P
<
0.01). Cell adhesion assay showed that compared with the blank group, the PA groups displayed reduced cell adhesion(
P
<
0.01). Wound healing assay showed that the wound healing rate of cells in the PA groups was lower than that in the blank group (
P
<
0.05,
P
<
0.01). Transwell invasion assay showed that compared with the blank group, the number of transmembrane cells in PA groups was reduced(
P
<
0.01). High-content imaging showed that the cumulative migration distance of cells in the PA groups was shorter than that in the blank group(
P
<
0.01). The results of Western blot showed that the protein expression of MMP-2 and MMP-9 in the PA groups decreased (
P
<
0.01), and TIMP-1 protein expression increased (
P
<
0.01) compared with those in the blank group. In addition, compared with the blank group, the PA groups showed decreased protein expression of Smad2 and Smad3 (
P
<
0.01).
Conclusion
2
PA can inhibit the invasion and metastasis of renal carcinoma cells presumably through regulating the homeostasis of MMP/TIMP by Smad2/3.
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