The hormone defined serum free conditioned medium (SFCM) of human nasopharyngeal carcinoma epithelioid cell line (CNE1) was assayed by both the 3H-thymidine incorporation test and the soft agar test. It was found that...The hormone defined serum free conditioned medium (SFCM) of human nasopharyngeal carcinoma epithelioid cell line (CNE1) was assayed by both the 3H-thymidine incorporation test and the soft agar test. It was found that the SFCM stimulated the growth of long-term serum-free cultured CNE4 cells in ac-cordence with the fact that the growth rate of long-term serum-free cultured CNE1 cells was directly proportional to the plating density. Alternatively 5% SFCM inhibited the growth of short-term serum-free cultured CNE4 cells by 51% in which the indicator cell remained the responsiveness state of growing in the serum-supplemented medium to the effector of interest. Furthermore, SFCM resulted in the inhibition of anchorage-independent growth of CNE4 cells and A431 cells. Also in soft agar test. SFCM reduced the colony formation of NRK(?),9F cells in the presence of EGF or EGF plus TGF-β. These finding suggested that CNE4 secreted autocrine growth stimulating factor(s) and growth inhibiting factor(s) in the serum-free medium, the latter strongly reverse malignant phenotypes of CNE4 and A431 cells in serum-supplemented surrounding.展开更多
目的:探讨叉头框转录因子M1(FoxM1)对人宫颈癌顺铂耐药株Hela/DDP增殖、侵袭、凋亡的影响及其机制。方法:将Hela/DDP细胞分为空白组(常规培养,不予任何处理)、正常对照(NC)组(转染空白干扰质粒)、低表达组和过表达组。低表达组转染siRNA...目的:探讨叉头框转录因子M1(FoxM1)对人宫颈癌顺铂耐药株Hela/DDP增殖、侵袭、凋亡的影响及其机制。方法:将Hela/DDP细胞分为空白组(常规培养,不予任何处理)、正常对照(NC)组(转染空白干扰质粒)、低表达组和过表达组。低表达组转染siRNA-FoxM1下调Hela/DDP细胞中FoxM1表达,过表达组转染pcDNA3.1-FoxM1上调Hela/DDP细胞中FoxM1表达。采用RT-qPCR法检测FoxM1 m RNA表达水平,CCK-8检测细胞活力,流式细胞仪检测细胞凋亡,Transwell小室检测细胞侵袭能力。结果:FoxM1 mRNA在Hela细胞中的表达水平低于Hela/DDP细胞(P<0.05)。空白组与NC组中FoxM1 mRNA、增殖率、凋亡率、侵袭细胞数及HSP70、S100A9蛋白表达水平比较,差异均无统计学意义(P>0.05)。与空白组比较,低表达组细胞活力和侵袭能力及FoxM1 mRNA、HSP70蛋白表达水平降低,凋亡率和S100A9蛋白表达水平升高(P<0.05),与空白组比较,过表达组细胞活力和侵袭能力及FoxM1 m RNA、HSP70蛋白表达水平升高,凋亡率和S100A9蛋白表达水平降低(P<0.05)。与低表达组比较,过表达组细胞活力和侵袭能力及FoxM1 mRNA、HSP70蛋白表达水平升高,凋亡率和S100A9蛋白表达水平降低(P<0.05)。结论:下调FoxM1表达可抑制HSP70表达,促进S100A9表达,调控宫颈癌细胞恶性行为,从而提高宫颈癌顺铂耐药细胞株对顺铂化疗的敏感性。展开更多
文摘The hormone defined serum free conditioned medium (SFCM) of human nasopharyngeal carcinoma epithelioid cell line (CNE1) was assayed by both the 3H-thymidine incorporation test and the soft agar test. It was found that the SFCM stimulated the growth of long-term serum-free cultured CNE4 cells in ac-cordence with the fact that the growth rate of long-term serum-free cultured CNE1 cells was directly proportional to the plating density. Alternatively 5% SFCM inhibited the growth of short-term serum-free cultured CNE4 cells by 51% in which the indicator cell remained the responsiveness state of growing in the serum-supplemented medium to the effector of interest. Furthermore, SFCM resulted in the inhibition of anchorage-independent growth of CNE4 cells and A431 cells. Also in soft agar test. SFCM reduced the colony formation of NRK(?),9F cells in the presence of EGF or EGF plus TGF-β. These finding suggested that CNE4 secreted autocrine growth stimulating factor(s) and growth inhibiting factor(s) in the serum-free medium, the latter strongly reverse malignant phenotypes of CNE4 and A431 cells in serum-supplemented surrounding.
文摘目的:探讨叉头框转录因子M1(FoxM1)对人宫颈癌顺铂耐药株Hela/DDP增殖、侵袭、凋亡的影响及其机制。方法:将Hela/DDP细胞分为空白组(常规培养,不予任何处理)、正常对照(NC)组(转染空白干扰质粒)、低表达组和过表达组。低表达组转染siRNA-FoxM1下调Hela/DDP细胞中FoxM1表达,过表达组转染pcDNA3.1-FoxM1上调Hela/DDP细胞中FoxM1表达。采用RT-qPCR法检测FoxM1 m RNA表达水平,CCK-8检测细胞活力,流式细胞仪检测细胞凋亡,Transwell小室检测细胞侵袭能力。结果:FoxM1 mRNA在Hela细胞中的表达水平低于Hela/DDP细胞(P<0.05)。空白组与NC组中FoxM1 mRNA、增殖率、凋亡率、侵袭细胞数及HSP70、S100A9蛋白表达水平比较,差异均无统计学意义(P>0.05)。与空白组比较,低表达组细胞活力和侵袭能力及FoxM1 mRNA、HSP70蛋白表达水平降低,凋亡率和S100A9蛋白表达水平升高(P<0.05),与空白组比较,过表达组细胞活力和侵袭能力及FoxM1 m RNA、HSP70蛋白表达水平升高,凋亡率和S100A9蛋白表达水平降低(P<0.05)。与低表达组比较,过表达组细胞活力和侵袭能力及FoxM1 mRNA、HSP70蛋白表达水平升高,凋亡率和S100A9蛋白表达水平降低(P<0.05)。结论:下调FoxM1表达可抑制HSP70表达,促进S100A9表达,调控宫颈癌细胞恶性行为,从而提高宫颈癌顺铂耐药细胞株对顺铂化疗的敏感性。
