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1.
Chinese Journal of Cancer Biotherapy ; (6): 318-323, 2023.
Article in Chinese | WPRIM | ID: wpr-972720

ABSTRACT

@#[摘 要] 目的:探讨新补骨脂异黄酮(NBIF)对肝细胞癌(HCC)Huh-7细胞焦亡的影响及其分子机制。方法:体外培养Huh-7细胞,用CCK-8法检测不同浓度的NBIF处理48 h时对细胞存活率的影响,光学显微镜下观察NBIF处理后Huh-7细胞的形态变化,乳酸脱氢酶(LDH)释放实验检测细胞的LDH释放量,WB实验检测细胞中GSDME、caspase-3的蛋白水平变化。采用siRNA干扰Huh-7细胞中caspase-3、GSDME表达后,CCK-8法检测NBIF处理对细胞存活率的影响,WB实验检测GSDME蛋白表达水平,观察NBIF处理对细胞形态的影响,并检测细胞LDH释放量。结果:60 μmol/L以上的NBIF均能显著抑制Huh-7细胞的增殖(均P<0.01),光学显微镜下观察到NBIF处理后的细胞出现肿胀、吐泡现象,且LDH释放增加(P<0.01);WB实验结果表明,NBIF能够激活caspase-3蛋白并切割GSDME蛋白,增加GSDME-N的表达(均P<0.01)。干扰caspase-3、GSDME表达后,NBIF对细胞的抑制作用减弱(均P<0.01),GSDME-N蛋白表达受到抑制(P<0.01),显微镜下细胞肿胀、吐泡现象几乎消失,LDH释放明显减少(P<0.05)。结论:NBIF能够通过caspase-3/GSDME途径诱导Huh-7细胞发生焦亡,从而抑制HCC细胞的增殖,为HCC的治疗提供一种新思路。

2.
Chinese Journal of Cancer Biotherapy ; (6): 672-680, 2023.
Article in Chinese | WPRIM | ID: wpr-986246

ABSTRACT

@#[摘 要] 目的:探讨光甘草定对肺腺癌细胞A549恶性生物学行的影响及其分子机制。方法:常规方法培养A549细胞和人正常肺上皮细胞BEAS-2B,用不同浓度的光甘草定和或顺铂对其进行处理,通过结晶紫染色、CCK-8法检测光甘草定、顺铂对A549、BEAS-2B细胞增殖活力的影响,Transwell小室实验、细胞划痕实验检测光甘草定对A549细胞侵袭、迁移能力的影响,流式细胞术检测光甘草定对A549细胞凋亡的影响,3D超低黏附板培养法培养A549细胞后采用CCK-8法检测光甘草定对A549细胞增殖的影响,WB法检测光甘草定对A549细胞中上皮间质转化(EMT)相关蛋白表达的影响;构建A549细胞移植瘤模型后检测光甘草定、顺铂对移植瘤的生长以及移植瘤组织中EMT相关蛋白表达的影响。结果:光甘草定、顺铂呈剂量依赖性地显著抑制A549细胞的增殖(P<0.05或P<0.01)、细胞迁移(P<0.05或P<0.01)和侵袭能力(P<0.05或P<0.01),光甘草定能诱导A549细胞凋亡(P<0.01),抑制A549细胞中N-cadherin、snail和vimentin蛋白的表达,促进E-cadherin蛋白表达;光甘草定、顺铂均能抑制A549移植瘤的生长,抑制移植瘤组织中Ki67、N-cadherin、snail和vimentin蛋白的表达、促进E-cadherin蛋白的表达。结论:光甘草定可通过抑制A549细胞的增殖、迁移和侵袭,诱导A549细胞凋亡,其机制可能与其抑制细胞的EMT进程而产生抑癌作用有关。

3.
Chinese Journal of Cancer Biotherapy ; (6): 1159-1165, 2018.
Article in Chinese | WPRIM | ID: wpr-801661

ABSTRACT

@#Objective: To explore the difference in the proliferation inhibition of doxorubicin and dual specific oncolytic adenoviruses (Ad-VT, Ad-T, Ad-VP3 and d-Mock) on breast cancer cells and normal mammary cells. Methods: The proliferation inhibition rates of doxorubicin and recombinant adenovirus(Ad-VT, Ad-T, Ad-VP3and Mock) on breast cancer cells were detected through WST-1 experiment, and the effects of two drugs on the inhibitory rates of normal mammary epithelial cells were also detected. Moreover, the apoptosis rates of doxorubicin and oncolytic adenoviruses on breast cancer cells and normal mammary epithelial cells were evaluated by Annexin V flow cytometry, Hoechst and JC-1 staining, and the difference in the apoptosis rates were also compared. Results: All the recombinant adenovirus could effectively suppress the proliferation of breast cancer cells (P<0.05 or P<0.01), the inhibition effects followed the order ofAd-VT>Ad-T>Ad-VP3>Ad-MOCK, and the inhibition effect was positively correlated with time. Doxorubicin could also effectively suppress the proliferation of breast cancer cells (P<0.05 or P<0.01), and the inhibition effect was markedly enhanced with the increases in does and time. However, doxorubicin also showed strong inhibition effect on the normal mammary epithelial cells, and the inhibition rate achieved 80% under 72 h and 5 ug/ml doxorubicin, while that of oncolytic adenovirus Ad-VT on MCF-10A was 20% at 72 h. The apoptosis effects of oncolytic adenoviruses-induced breast cancer cellwere increased with time, and the apoptosis rate efficiency followed the order of Ad-VT>Ad-T>Ad-VP3>Ad-MOCK, but they displayed low ability to induce normal mammary cell apoptosis. The apoptosis effects of doxorubicin-induced breast cancer cell were similar to that of the normal mammary epithelial cell (P <0.05 or P<0.01), which followed the dose of 0.05<0.5<5 μg/ml. Conclusion: Dual specific oncolytic adenoviruses can effectively suppress the proliferation of breast cancer cells, but they have low inhibition on normal mammary cells, which have displayed superior safety and provide a new method for the biotherapy of tumor.

4.
Chinese Journal of Cancer Biotherapy ; (6): 1264-1269, 2018.
Article in Chinese | WPRIM | ID: wpr-801640

ABSTRACT

@# Objective: To investigate the inhibitory effect of recombinant oncolytic adenovirusAd-Apoptin-hTERTp-E1A(ATV) on luciferase-labeled human lung cancer cells (A549-luc) and human lung cancerA549 cells, and to compare the differences in the inhibitory effect on two cell lines. Methods:ATV was used to infectA549-luc cells andA549 cells respectively. WST-1 and crystal violet staining were used to determine the difference in the inhibitory effect of ATV. Hoechst and Annexin V-FITC/PI staining were used to verify the inhibition mode ofATV. Results: WST-1 and crystal violet staining showed thatATV had significant inhibitory effect on bothA549-luc and A549 cells ( P <0.05). ATV showed significant inhibitory effect on both cells at 24, 48 and 72 h ( P <0.05 or P <0.01), and reached the peak at 72 h; ATV at concentrations of 1, 10 and 100 MOI all showed inhibitory effect on both cells, and reached the peak at 100 MOI. Hoechst staining showed that A549-luc cells and A549 cells infected with ATV showed typical nuclear fragmentation and marginal set. The results of Annexin V-FITC/PI Flow cytometry showed that ATV infection resulted in apoptosis of A549-luc and A549 cells, which was in a time-dependent manner and reached the peak at 72 h( P <0.05 or P <0.01). Conclusion: Insertion of luciferase didn’t significantly change the inhibitory effect and inhibitory mode ofATV onA549-luc cells.ATV exerted its in vitro inhibitory effect onA549-luc and A549 cells by inducing cell apoptosis.

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