目的探讨环状RNA(circ)_0003028对人肝癌细胞增殖、迁移和侵袭的影响及分子机制。方法人肝癌细胞系Huh7分为小干扰RNA(si)-NC组、si-circ_0003028组、微小RNA(miR)-NC组、miR-498模似物(mimics)组、si-circ_0003028+anti-miR-NC组、si-c...目的探讨环状RNA(circ)_0003028对人肝癌细胞增殖、迁移和侵袭的影响及分子机制。方法人肝癌细胞系Huh7分为小干扰RNA(si)-NC组、si-circ_0003028组、微小RNA(miR)-NC组、miR-498模似物(mimics)组、si-circ_0003028+anti-miR-NC组、si-circ_0003028+anti-miR-498组;Real-time PCR检测肝癌组织及各组细胞中circ_0003028和miR-498表达水平;MTT检测细胞增殖;Transwell检测细胞迁移和侵袭数;Western blotting检测蛋白表达;双荧光素酶报告实验检测circ_0003028和miR-498的靶向调控关系。结果肝癌组织中circ_0003028表达水平升高(0.98±0.02 vs 1.36±0.01),miR-498表达水平降低(0.98±0.02 vs 0.63±0.02)(P<0.05)。抑制circ_0003028表达或miR-498过表达后,Huh7细胞中Ki-67(0.85±0.02 vs 0.41±0.02或0.95±0.11 vs 0.37±0.02)、基质金属蛋白酶(MMP)-2(0.71±0.02 vs 0.43±0.03或0.83±0.02 vs 0.41±0.03)、MMP-9(0.74±0.02 vs 0.37±0.02或0.78±0.02 vs 0.39±0.02)蛋白表达水平降低,细胞活性(1.53±0.03 vs 1.05±0.02或1.68±0.02 vs 1.11±0.02)降低;迁移(111.40±2.12 vs 77.22±2.38或108.90±2.30 vs 78.44±1.46)和侵袭(87.89±2.18 vs 49.78±1.98或80.22±1.79 vs 38.22±1.52)细胞数减少,生殖器形成抑制基因-1(SMG-1)(0.76±0.02 vs 1.39±0.02或0.79±0.02 vs 1.39±0.02)、p53(0.77±0.02 vs 1.24±0.03或0.82±0.03 vs 1.45±0.03)、p53-ser15(0.78±0.03 vs 1.50±0.02或0.82±0.02 vs 1.49±0.04)蛋白表达水平升高(P<0.05)。Circ_0003028靶向调控miR-498,沉默miR-498逆转了抑制circ_0003028表达对Huh7细胞增殖、迁移和侵袭的影响。结论抑制circ_0003028表达通过靶向miR-498影响SMG-1/p53信号通路而抑制人肝癌细胞增殖、迁移和侵袭。展开更多
Objective: It is discussed whether saikosaponin A induces apoptosis of human hepatoma Huh7 cells is related to the change of autophagy level.Methods: The effects of different concentrations of SSA on proliferation and...Objective: It is discussed whether saikosaponin A induces apoptosis of human hepatoma Huh7 cells is related to the change of autophagy level.Methods: The effects of different concentrations of SSA on proliferation and apoptosis of Huh7 cells were detected by MTT and flow cytometry, and then constructed recombinant plasmid pEGFP-N1-LC3B and transfected into Huh7 cells. After intervened by SSA culture medium, the autophagy level was observed under confocal microscope. The expression of apoptosis proteins Bax, Bcl-2, PCNA and autophagy-related proteins LC3B, Beclin1, and Apg12-Apg5 were detected by Western Blot. Results: SSA can significantly inhibit the proliferation of Huh7 cells, promote apoptosis, increase the number of autophagy bodies in the cytoplasm, up-regulate the expression of Bax, LC3B-II, Beclin1, Apg12-Apg5 and down-regulate the expression of Bcl-2, PCNA. Conclusion:SSA induced apoptosis of Huh7 cells in vitro and upregulated the autophagy level.展开更多
文摘目的探讨环状RNA(circ)_0003028对人肝癌细胞增殖、迁移和侵袭的影响及分子机制。方法人肝癌细胞系Huh7分为小干扰RNA(si)-NC组、si-circ_0003028组、微小RNA(miR)-NC组、miR-498模似物(mimics)组、si-circ_0003028+anti-miR-NC组、si-circ_0003028+anti-miR-498组;Real-time PCR检测肝癌组织及各组细胞中circ_0003028和miR-498表达水平;MTT检测细胞增殖;Transwell检测细胞迁移和侵袭数;Western blotting检测蛋白表达;双荧光素酶报告实验检测circ_0003028和miR-498的靶向调控关系。结果肝癌组织中circ_0003028表达水平升高(0.98±0.02 vs 1.36±0.01),miR-498表达水平降低(0.98±0.02 vs 0.63±0.02)(P<0.05)。抑制circ_0003028表达或miR-498过表达后,Huh7细胞中Ki-67(0.85±0.02 vs 0.41±0.02或0.95±0.11 vs 0.37±0.02)、基质金属蛋白酶(MMP)-2(0.71±0.02 vs 0.43±0.03或0.83±0.02 vs 0.41±0.03)、MMP-9(0.74±0.02 vs 0.37±0.02或0.78±0.02 vs 0.39±0.02)蛋白表达水平降低,细胞活性(1.53±0.03 vs 1.05±0.02或1.68±0.02 vs 1.11±0.02)降低;迁移(111.40±2.12 vs 77.22±2.38或108.90±2.30 vs 78.44±1.46)和侵袭(87.89±2.18 vs 49.78±1.98或80.22±1.79 vs 38.22±1.52)细胞数减少,生殖器形成抑制基因-1(SMG-1)(0.76±0.02 vs 1.39±0.02或0.79±0.02 vs 1.39±0.02)、p53(0.77±0.02 vs 1.24±0.03或0.82±0.03 vs 1.45±0.03)、p53-ser15(0.78±0.03 vs 1.50±0.02或0.82±0.02 vs 1.49±0.04)蛋白表达水平升高(P<0.05)。Circ_0003028靶向调控miR-498,沉默miR-498逆转了抑制circ_0003028表达对Huh7细胞增殖、迁移和侵袭的影响。结论抑制circ_0003028表达通过靶向miR-498影响SMG-1/p53信号通路而抑制人肝癌细胞增殖、迁移和侵袭。
基金This study was supported by National Natural Science Foundation(81273745).
文摘Objective: It is discussed whether saikosaponin A induces apoptosis of human hepatoma Huh7 cells is related to the change of autophagy level.Methods: The effects of different concentrations of SSA on proliferation and apoptosis of Huh7 cells were detected by MTT and flow cytometry, and then constructed recombinant plasmid pEGFP-N1-LC3B and transfected into Huh7 cells. After intervened by SSA culture medium, the autophagy level was observed under confocal microscope. The expression of apoptosis proteins Bax, Bcl-2, PCNA and autophagy-related proteins LC3B, Beclin1, and Apg12-Apg5 were detected by Western Blot. Results: SSA can significantly inhibit the proliferation of Huh7 cells, promote apoptosis, increase the number of autophagy bodies in the cytoplasm, up-regulate the expression of Bax, LC3B-II, Beclin1, Apg12-Apg5 and down-regulate the expression of Bcl-2, PCNA. Conclusion:SSA induced apoptosis of Huh7 cells in vitro and upregulated the autophagy level.
