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中华细胞与干细胞杂志(电子版) ›› 2022, Vol. 12 ›› Issue (01) : 14 -18. doi: 10.3877/cma.j.issn.2095-1221.2022.01.003

论著

桔梗多糖通过LINC01554影响肝癌细胞增殖、凋亡的分子机制研究
蔡妍玮1, 姚毅炯1,()   
  1. 1. 200032 上海市中医药大学附属龙华医院药学部
  • 收稿日期:2021-04-13 出版日期:2022-02-01
  • 通信作者: 姚毅炯

Mechanisms of polysaccharides of radix platycodonis in the proliferation and apoptosis of liver cancer cells via LINC01554

Yanwei Cai1, Yijiong Yao1,()   

  1. 1. Department of pharmacy, Longhua Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai 200032, China
  • Received:2021-04-13 Published:2022-02-01
  • Corresponding author: Yijiong Yao
引用本文:

蔡妍玮, 姚毅炯. 桔梗多糖通过LINC01554影响肝癌细胞增殖、凋亡的分子机制研究[J/OL]. 中华细胞与干细胞杂志(电子版), 2022, 12(01): 14-18.

Yanwei Cai, Yijiong Yao. Mechanisms of polysaccharides of radix platycodonis in the proliferation and apoptosis of liver cancer cells via LINC01554[J/OL]. Chinese Journal of Cell and Stem Cell(Electronic Edition), 2022, 12(01): 14-18.

目的

探讨桔梗多糖对肝癌细胞增殖、凋亡的影响及其机制。

方法

采用低、中、高剂量(20、40、60 μg/mL)的桔梗多糖处理肝癌细胞Huh-7,二甲基亚砜(DMSO)处理的Huh-7细胞作为对照;pcDNA、pcDNA-LINC01554分别转染入Huh-7细胞;si-NC、si-LINC01554分别转染Huh-7细胞后加入桔梗多糖处理;采用MTT实验与平板克隆形成实验分别检测细胞增殖及克隆形成能力,流式细胞术检测细胞凋亡率,RT-qPCR法检测LINC01554的表达量。两组间比较采用独立样本t检验,多组间比较采用单因素方差分析,组间两两比较采用SNK-q检验。

结果

与对照比较,低、中、高剂量的桔梗多糖干预后细胞活力(1.26±0.09比1.05±0.06,0.77±0.05,0.47±0.03)下降及集落形成数[(117.00±4.55)比(99.67±3.86) ,(71.67±2.87),(54.67±2.05)个]减少,凋亡率[ (8.24± 0.49)﹪比(13.47±0.72)﹪,(18.20±0.84)﹪,(22.52±1.12)﹪]及LINC01554表达水平(1.00± 0.00比1.35±0.05,1.90±0.06,3.38±0.09)均升高(P均< 0.05),且呈浓度依赖性;与转染pcDNA比较,转染pcDNA-LINC01554的细胞活力(1.24±0.08比0.56±0.03)降低,集落形成数[(116.67±4.19)比64.33±2.49)个]减少,凋亡率[(8.13±0.60)﹪比(20.45±0.97)﹪]升高(P均< 0.05);与转染si-NC加桔梗多糖处理比较,si-LINC01554加桔梗多糖处理的细胞活力(0.48±0.03比1.12±0.06)升高,集落形成数[(55.00±2.16)比(107.67±3.40)个]增多,凋亡率[(22.51±1.10)﹪比(10.52±0.49)﹪]降低(P均< 0.05)。

结论

桔梗多糖可通过上调LINC01554的表达减弱肝癌细胞增殖及克隆形成能力,并诱导细胞凋亡。

Objective

To explore the effects and mechanisms of polysaccharides of radix platycodonis on the proliferation and apoptosis of liver cancer cells.

Methods

Liver cancer cells Huh-7 were treated with low, medium and high dose (20, 40, 60 μg/mL) polysaccharides of radix platycodonis respectively. DMSO-treated Huh-7 cells were served as control. In addition, pcDNA and pcDNA-LINC01554 were transfected into Huh-7 cells. si-NC and si-LINC01554 were transfected into Huh-7 cells respectively and then treated with polysaccharides of radix. Cell proliferation and clone formation ability were detected by MTT experiment and plate clone formation experiment. Apoptosis rate was detected by Flow cytometry. The expression of LINC01554 was detected by RT-qPCR. The comparison between the two groups of data was performed by t test, and the comparison of multiple groups was performed by one-way analysis of variance.

Results

Compared with the control, the cell viability (1.26±0.09 vs 1.05±0.06, 0.77±0.05, 0.47± 0.03) and the number of colonies formed (117.00±4.55 vs 99.67±3.86, 71.67±2.87, 54.67±2.05) were decreased in low, medium and high dose polysaccharides of radix platycodonis treated cells in a dose-dependent manner, while the apoptosis rate [ (8.24±0.49) ﹪ vs (13.47±0.72) ﹪, (18.20±0.84) ﹪, 22.52±1.12) ﹪] and the expression level of LINC01554 (1.00±0.00 vs 1.35±0.05, 1.90±0.06, 3.38±0.09) were increased significantly in a dose-dependent manner (all P < 0.05) . Compared with the pcDNA, cell viability (1.24±0.08 vs 0.56±0.03) and the colony formation number (116.67±4.19 vs 64.33±2.49) were decreased in pcDNA-LINC01554 transfected cells, while the apoptosis rate was increased [ (8.13±0.60) ﹪vs (20.45±0.97) ﹪] (all P < 0.05) . Compared with the polysaccharides of radix platycodonis+si-NC, the cell viability (0.48±0.03 vs 1.12±0.06) and the number of colonies formed (55.00±2.16 vs 107.67±3.40) were increased in the polysaccharides of radix platycodonis+si-LINC01554 treated cells, while the apoptosis rate was decreased [ (22.51±1.10) ﹪vs 10.52±0.49) ﹪] ( all P < 0.05) .

Conclusion

Polysaccharides of radix platycodonis could reduce the proliferation and cloning ability of liver cancer cells and induce apoptosis by up-regulating the expression of LINC01554.

表1 引物序列信息
图1 流式细胞术检测桔梗多糖诱导肝癌细胞凋亡注:a图为对照;b图为20 μg/mL桔梗多糖干预;c图为40 μg/mL桔梗多糖干预;d图为60 μg/mL桔梗多糖干预
图2 Western blot检测桔梗多糖诱导Bax蛋白表达和抑制Bcl-2蛋白表达
表2 桔梗多糖对细胞增殖和凋亡的影响( ± s
表3 桔梗多糖对细胞中LINC01554表达的影响( ± s
图3 过表达LINC0155诱导Bax蛋白表达抑制Bcl-2蛋白表达注:a ~ b图为流式细胞术检测转染pcDNA和pcDNA-LINC01554后肝癌细胞凋亡;c图为Western blot检测细胞Bax和Bcl-2蛋白表达水平
表4 LINC01554对细胞增殖和凋亡的影响( ± s
图4 抑制LINC01554可逆转桔梗多糖对细胞中Bax蛋白表达抑制Bcl-2蛋白表达的作用注:a ~ b图为流式细胞术检测桔梗多糖+si-NC和桔梗多糖+si-LINC01554逆转肝癌细胞凋亡;c图为Western blot检测细胞Bax和Bcl-2蛋白表达水平
表5 抑制LINC01554可逆转桔梗多糖对细胞增殖和凋亡的影响( ± s
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