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广州中医药大学,广州 510405
Received:09 November 2021,
Published Online:30 January 2022,
Published:20 July 2022
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覃万莉,徐玉洁,潘真真等.附子汤对类风湿性关节炎滑膜成纤维细胞MH7A增殖和miR-155表达的影响[J].中国实验方剂学杂志,2022,28(14):29-35.
QIN Wanli,XU Yujie,PAN Zhenzhen,et al.Effect of Fuzitang on Proliferation of Human Rheumatoid Arthritis Synovial Fibroblast Cell Line MH7A and Expression of miR-155[J].Chinese Journal of Experimental Traditional Medical Formulae,2022,28(14):29-35.
覃万莉,徐玉洁,潘真真等.附子汤对类风湿性关节炎滑膜成纤维细胞MH7A增殖和miR-155表达的影响[J].中国实验方剂学杂志,2022,28(14):29-35. DOI: 10.13422/j.cnki.syfjx.20220779.
QIN Wanli,XU Yujie,PAN Zhenzhen,et al.Effect of Fuzitang on Proliferation of Human Rheumatoid Arthritis Synovial Fibroblast Cell Line MH7A and Expression of miR-155[J].Chinese Journal of Experimental Traditional Medical Formulae,2022,28(14):29-35. DOI: 10.13422/j.cnki.syfjx.20220779.
目的
2
观察附子汤对类风湿性关节炎滑膜成纤维细胞MH7A增殖的影响,研究附子汤对miR-155表达的影响并进一步探讨其抗类风湿性关节炎的作用机制。
方法
2
体外培养MH7A细胞,设空白组、附子汤高剂量组(25 g·L
-1
)、低剂量组(12.5 g·L
-1
)和硫酸羟氯喹阳性药组(0.006 25 g·L
-1
),采用细胞增殖与活性检测(CCK-8)试剂盒法检测细胞增殖,流式细胞术检测MH7A细胞周期的改变;应用实时荧光定量聚合酶链式反应(Real-time PCR)法检测药物处理后miR-155及其下游基因含SH2结构域的肌醇5-磷酸酶-1(SHIP-1)、蛋白激酶B3(Akt3)和哺乳动物雷帕霉素靶蛋白(mTOR) mRNA表达,蛋白免疫印迹法(Western blot)检测磷脂酰肌醇3-激酶(PI3K)、Akt3和mTOR的蛋白表达。
结果
2
附子汤体外在质量浓度6.25 g·L
-1
以上时,能明显抑制MH7A增殖,且呈明显的量-效关系和时-效关系。与空白组比较,附子汤高、低剂量组G
2
/M期细胞比例均明显增加(
P
<
0.05),高剂量组G
0
/G
1
期细胞比例明显降低(
P
<
0.05),其细胞周期的阻滞作用呈明显的量效关系。与空白组比较,附子汤高、低剂量组miR-155的表达均明显下调(
P
<
0.05);附子汤高剂量组SHIP1 mRNA表达明显上调、Akt3 mRNA表达明显下调(
P
<
0.05),附子汤高、低剂量组mTOR mRNA表达均明显下调(
P
<
0.05)。与空白组比较,附子汤高、低剂量组的PI3K、Akt3和mTOR的蛋白表达均明显下调(
P
<
0.05)。
结论
2
附子汤对MH7A细胞增殖具有显著的抑制作用,作用机制与下调miR-155的表达,从而促进SHIP-1的表达,抑制其下游PI3K/Akt3/mTOR信号通路的基因表达有关。
Objective
2
To observe the effects of Fuzitang (FZT) on the proliferation of MH7A cells, the human rheumatoid arthritis synovial fibroblasts, and the expression of miR-155 and explore its anti-rheumatoid arthritis mechanism.
Method
2
MH7A cells were cultured
in vitro
and divided into a blank group, high- (25 g·L
-1
) and low-dose (12.5 g·L
-1
) FZT groups, and a positive drug group (hydroxychloroquine, 0.006 25 g·L
-1
). The cell proliferation was detected by cell counting kit-8(CCK-8) method, and the change in the MH7A cell cycle was detected by flow cytometry. The mRNA expression of miR-155 and its downstream genes, including SH2 domain-containing inositol 5-phosphatase-1(SHIP-1), protein kinase B 3(Akt3), and mammalian target of rapamycin(mTOR), was detected by Real-time fluorescence quantitative polymerase chain reaction(Real-time PCR), and the protein expression of phosphatidylinositol 3-kinase (PI3K), Akt3, and mTOR was detected by Western blot.
Result
2
FZT
in vitro
in a concentration of 6.25 g·L
-1
above could inhibit the proliferation of MH7A cells in the significant dose- and time-effect manner. Compared with the blank group, the FZT groups showed increased proportions of cells in the G
2
/M phase (
P
<
0.05), and the high-dose FZT group showed a decreased proportion of cells in the G
0
/G
1
phase (
P
<
0.05). The arresting effect of FZT on the cell cycle was in a significant dose-effect manner. Compared with the blank group, the FZT groups showed down-regulated miR-155 and mTOR mRNA expression (
P
<
0.05), and the high-dose FZT group showed up-regulated SHIP1 mRNA expression and down-regulated Akt3 mRNA expression (
P
<
0.05). Compared with the blank group, the FZT groups showed reduced protein expression of PI3K, Akt3, and mTOR (
P
<
0.05).
Conclusion
2
FZT can significantly inhibit the proliferation of MH7A cells, and the mechanism is related to the promotion of the expression of SHIP-1 and down-regulation of the gene expression of the PI3K/Akt3/mTOR signaling pathway by down-regulating the expression of miR-155.
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