Objective： The present study was designed to investigate whether quercetin exerts increasing chemosensitivity on human lung adenocarcinoma cells when quercetin combined with cisplatin （DDP） and vincristine （VCR） ...Objective： The present study was designed to investigate whether quercetin exerts increasing chemosensitivity on human lung adenocarcinoma cells when quercetin combined with cisplatin （DDP） and vincristine （VCR） in vitro respectively and its possible antitumor mechanism. To provide experimental proof for clinical combination application. Methods： Using intermittent administration of high dose VCR, human lung adenocarcinoma sensitive cell line （A549/S） was induced to VCR- resistant human lung adenocarcinoma cell line （A549NCR）. MTT assay was adapted for examing the 50% inhibition （IC50） value of DDP and VCR on A549/S and A549/VCR when quercetin combined with DDP and VCR respectively. Results： IC50 of DDP on A549/S and A549/VCR was 10.18 and 12.35 mg/L, and the IC50 of VCR on the two cell lines was 1.21 and 12.77 rag/L, respectively. The resistance fold of A549/VCR on VCR and DDP was 10.55 and 121, respectively. When quercetin at concentration of 50, 100 and 200 pmol/L in combination with DDP and VCR respectively, the IC50 of DDP and VCR on A549/S and A549/VCR were obvious decreased （P 〈 0.05 - P 〈 0.01）. Conclusion： The experiment results suggested that quercetin could increase the chemosensitivity and partly revise the resistance of A549NCR.展开更多
In order to investigate the inhibitory effects of Endostar(rh-endostatin,YH-16)in combination with radiotherapy on lung adenocarcinoma A549 in mice and the interaction mechanisms of combined therapy,the transplantatio...In order to investigate the inhibitory effects of Endostar(rh-endostatin,YH-16)in combination with radiotherapy on lung adenocarcinoma A549 in mice and the interaction mechanisms of combined therapy,the transplantation tumor models of A549 lung adenocarcinoma were established.When the largest diameter of tumor reached 1.0cm,all nude mice were randomly divided into 4 groups:Endostar group,radiotherapy group,radiotherapy plus Endostar(combined treatment)group,and control group(n=6 in each group).The largest d...展开更多
目的为探讨昆明山海棠总生物碱(alkaloids from Tripterygium Hypoglaucum Hutch,THHa)抗肺癌机制,研究THHa诱导肺腺癌A549细胞凋亡与细胞周期改变的关系。方法应用形态学观察、DNA凝胶电泳、流式细胞仪检测分析肺腺癌A549细胞凋亡及细...目的为探讨昆明山海棠总生物碱(alkaloids from Tripterygium Hypoglaucum Hutch,THHa)抗肺癌机制,研究THHa诱导肺腺癌A549细胞凋亡与细胞周期改变的关系。方法应用形态学观察、DNA凝胶电泳、流式细胞仪检测分析肺腺癌A549细胞凋亡及细胞周期改变。结果THHa能够诱导肺腺癌A549细胞凋亡并主要作用于细胞周期S期(S期细胞增多)。结论THHa可能通过诱导细胞凋亡而抑制A549细胞增殖,这种作用与细胞周期有关,这些有助于将来肺癌治疗方案的合理设计。展开更多
基金Supported by a grant from the Health Department of Jiangxi Province for Science Technical Program Foundation(No.2005-22A)
文摘Objective： The present study was designed to investigate whether quercetin exerts increasing chemosensitivity on human lung adenocarcinoma cells when quercetin combined with cisplatin （DDP） and vincristine （VCR） in vitro respectively and its possible antitumor mechanism. To provide experimental proof for clinical combination application. Methods： Using intermittent administration of high dose VCR, human lung adenocarcinoma sensitive cell line （A549/S） was induced to VCR- resistant human lung adenocarcinoma cell line （A549NCR）. MTT assay was adapted for examing the 50% inhibition （IC50） value of DDP and VCR on A549/S and A549/VCR when quercetin combined with DDP and VCR respectively. Results： IC50 of DDP on A549/S and A549/VCR was 10.18 and 12.35 mg/L, and the IC50 of VCR on the two cell lines was 1.21 and 12.77 rag/L, respectively. The resistance fold of A549/VCR on VCR and DDP was 10.55 and 121, respectively. When quercetin at concentration of 50, 100 and 200 pmol/L in combination with DDP and VCR respectively, the IC50 of DDP and VCR on A549/S and A549/VCR were obvious decreased （P 〈 0.05 - P 〈 0.01）. Conclusion： The experiment results suggested that quercetin could increase the chemosensitivity and partly revise the resistance of A549NCR.
文摘In order to investigate the inhibitory effects of Endostar(rh-endostatin,YH-16)in combination with radiotherapy on lung adenocarcinoma A549 in mice and the interaction mechanisms of combined therapy,the transplantation tumor models of A549 lung adenocarcinoma were established.When the largest diameter of tumor reached 1.0cm,all nude mice were randomly divided into 4 groups:Endostar group,radiotherapy group,radiotherapy plus Endostar(combined treatment)group,and control group(n=6 in each group).The largest d...
文摘目的为探讨昆明山海棠总生物碱(alkaloids from Tripterygium Hypoglaucum Hutch,THHa)抗肺癌机制,研究THHa诱导肺腺癌A549细胞凋亡与细胞周期改变的关系。方法应用形态学观察、DNA凝胶电泳、流式细胞仪检测分析肺腺癌A549细胞凋亡及细胞周期改变。结果THHa能够诱导肺腺癌A549细胞凋亡并主要作用于细胞周期S期(S期细胞增多)。结论THHa可能通过诱导细胞凋亡而抑制A549细胞增殖,这种作用与细胞周期有关,这些有助于将来肺癌治疗方案的合理设计。
