索拉非尼对人肺癌细胞株A549增殖的影响及其机制的研究(1)
摘 要:目的 以人肺癌细胞株A549为研究对象,观察不同浓度/时间下索拉尼非对人肺癌细胞A549的增殖及其对VEGFR-2、VEGFR-3、P-VEGFR-2及P-VEGFR-3表达的影响。方法 不同浓度的索拉非尼(1.5 μmol/L、3 μmol/L、6 μmol/L、12 μmol/L)分别与A549细胞体外培养24 h、48 h、72 h后采用四甲基偶氮唑蓝比色法测定细胞生长抑制率。采用RT-PCR法测定不同药物浓度/时间下肺癌细胞株A549中VEGFR-2mRNA、VEGFR-3mRNA的表达变化,用Western Blot法测定P-VEGFR-2及P-VEGFR-3的表达。结果 在外源性药物索拉非尼的刺激下,肺癌细胞A549的生长受到抑制,索拉非尼的浓度越高,作用时间越长,抑制率越大,提示呈现时间和浓度依赖性(P<0.05)。以终浓度为1.5 μmol/L、3 μmol/L、6 μmol/L、12 μmol/L的索拉非尼加入实验组,在不同的作用时间(24 h、48 h、72 h)下,实验组与对照组比较VEGFR-2mRNA及VEGFR-3mRNA的表达无明显变化(P>0.05)。P-VEGFR-2及P-VEGFR-3的表达与对照组比较呈现下降趋势(P<0.05),呈浓度依赖性。结论 索拉非尼能抑制A549肺癌细胞的生长,呈现时间和浓度依赖性。索拉非尼能抑制A549肺癌细胞的生长,其机制之一可能与其抑制P-VEGFR-2及P-VEGFR-3的表达有关。
, http://www.100md.com
关键词:索拉非尼;A549肺癌细胞;VEGFR-2;VEGFR-3;P-VEGFR-2;P-VEGFR-3
中图分类号:R734.2 文献标识码:A DOI:10.3969/j.issn.1006-1959.2018.17.003
文章编号:1006-1959(2018)17-0008-06
Abstract:Objective The proliferation of human lung cancer cell line A549 and its effects on the expression of VEGFR-2,VEGFR-3, P-VEGFR-2 and P-VEGFR-3 were observed at different concentrations/time.Methods Different concentrations of sorafenib(1.5μmol/L,3μmol/L,6μmol/L,12μmol/L)were cultured with A549 cells for 24,48 and 72h respectively.The inhibition rate of cell growth was determined by tetramethylazo blue colorimetry.The expression of VEGFR-2 mRNA and VEGFR-3 mRNA in lung cancer cell line A549 was detected by RT-PCR and the expression of P-VEGFR-2 and P-VEGFR-3 was detected by Western Blot.Results Under the stimulation of the exogenous drug sorafenib,the growth of lung cancer cell A549 was inhibited.The higher the concentration of sorafenib, the longer the duration of action,the greater the inhibition rate, suggesting time- and concentration-dependent(P<0.05). Sorafenib at a final concentration of 1.5μmol/L,3μmol/L,6μmol/L,and 12μmol/L was added to the experimental group at different time(24h,48h,72h),there was no significant difference in the expression of VEGFR-2 mRNA and VEGFR-3 mRNA between the experimental group and the control group(P>0.05).The expression of P-VEGFR-2 and P-VEGFR-3 decreased in a concentration-dependent manner compared with the control group(P<0.05).Conclusion Sorafenib can inhibit the growth of A549 lung cancer cells in a time-and concentration-dependent manner.Sorafenib can inhibit the growth of A549 lung cancer cells,and one of its mechanisms may be related to its inhibition of P-VEGFR-2 and P-VEGFR-3 expression.
, 百拇医药
Key words:Sorafenib;A549 lung cancer cells;VEGFR-2;VEGFR-3;P-VEGFR-2;P-VEGFR-3
隨着肿瘤分子生物学的研究进展,肿瘤分子靶向治疗已成为肿瘤研究的热点,在多种肿瘤的治疗中发挥了重要作用。分子靶向治疗已使众多肿瘤患者受益,目前已有多种靶向治疗药物上市并在某些肿瘤的临床试验中证实有效[1]。然而,大部分肿瘤的生物学行为并非由单一信号传导通路所支配,而是多个信号传导通路共同起作用的,因此,针对多靶点进行靶向治疗可能会取得更好的疗效[2]。索拉非尼是一种小分子多靶点的生物靶向治疗新药,是首个口服多激酶抑制剂,目前已成为肿瘤学界倍受关注的抗肿瘤药物之一[3]。大量的体外肿瘤细胞和实验动物模型以及临床研究都已证实,索拉非尼的疗效是可喜的,使抗肿瘤从化疗和免疫治疗阶段迈入了靶向治疗的时代[4]。拜耳和Onyx药业公司从肿瘤的发生机理和肿瘤生长需要新生血管提供营养入手,联合研制了索拉非尼(sorafenib)。索拉非尼能作用于多个靶点,对多种肿瘤细胞有抑制作用。索拉非尼既能直接抑制肿瘤细胞的增殖,又能通过抑制血管新生,达到肿瘤饥饿疗法的目的[5]。2005年12月20日获美国FDA快速批准了其作为晚期肾细胞癌的一线治疗药物,是美国FDA10年来批准的第一个治疗肾癌的药物。目前研究表明,索拉非尼对肝癌、非小细胞肺癌以及黑色素瘤等也有疗效[6]。本研究以人肺癌细胞株A549为研究对象,观察不同浓度/时间下索拉尼非对人肺癌细胞A549的增殖及其对VEGFR-2、VEGFR-3、P-VEGFR-2及P-VEGFR-3表达的影响,现报道如下。, http://www.100md.com(司新鹏)
, http://www.100md.com
关键词:索拉非尼;A549肺癌细胞;VEGFR-2;VEGFR-3;P-VEGFR-2;P-VEGFR-3
中图分类号:R734.2 文献标识码:A DOI:10.3969/j.issn.1006-1959.2018.17.003
文章编号:1006-1959(2018)17-0008-06
Abstract:Objective The proliferation of human lung cancer cell line A549 and its effects on the expression of VEGFR-2,VEGFR-3, P-VEGFR-2 and P-VEGFR-3 were observed at different concentrations/time.Methods Different concentrations of sorafenib(1.5μmol/L,3μmol/L,6μmol/L,12μmol/L)were cultured with A549 cells for 24,48 and 72h respectively.The inhibition rate of cell growth was determined by tetramethylazo blue colorimetry.The expression of VEGFR-2 mRNA and VEGFR-3 mRNA in lung cancer cell line A549 was detected by RT-PCR and the expression of P-VEGFR-2 and P-VEGFR-3 was detected by Western Blot.Results Under the stimulation of the exogenous drug sorafenib,the growth of lung cancer cell A549 was inhibited.The higher the concentration of sorafenib, the longer the duration of action,the greater the inhibition rate, suggesting time- and concentration-dependent(P<0.05). Sorafenib at a final concentration of 1.5μmol/L,3μmol/L,6μmol/L,and 12μmol/L was added to the experimental group at different time(24h,48h,72h),there was no significant difference in the expression of VEGFR-2 mRNA and VEGFR-3 mRNA between the experimental group and the control group(P>0.05).The expression of P-VEGFR-2 and P-VEGFR-3 decreased in a concentration-dependent manner compared with the control group(P<0.05).Conclusion Sorafenib can inhibit the growth of A549 lung cancer cells in a time-and concentration-dependent manner.Sorafenib can inhibit the growth of A549 lung cancer cells,and one of its mechanisms may be related to its inhibition of P-VEGFR-2 and P-VEGFR-3 expression.
, 百拇医药
Key words:Sorafenib;A549 lung cancer cells;VEGFR-2;VEGFR-3;P-VEGFR-2;P-VEGFR-3
隨着肿瘤分子生物学的研究进展,肿瘤分子靶向治疗已成为肿瘤研究的热点,在多种肿瘤的治疗中发挥了重要作用。分子靶向治疗已使众多肿瘤患者受益,目前已有多种靶向治疗药物上市并在某些肿瘤的临床试验中证实有效[1]。然而,大部分肿瘤的生物学行为并非由单一信号传导通路所支配,而是多个信号传导通路共同起作用的,因此,针对多靶点进行靶向治疗可能会取得更好的疗效[2]。索拉非尼是一种小分子多靶点的生物靶向治疗新药,是首个口服多激酶抑制剂,目前已成为肿瘤学界倍受关注的抗肿瘤药物之一[3]。大量的体外肿瘤细胞和实验动物模型以及临床研究都已证实,索拉非尼的疗效是可喜的,使抗肿瘤从化疗和免疫治疗阶段迈入了靶向治疗的时代[4]。拜耳和Onyx药业公司从肿瘤的发生机理和肿瘤生长需要新生血管提供营养入手,联合研制了索拉非尼(sorafenib)。索拉非尼能作用于多个靶点,对多种肿瘤细胞有抑制作用。索拉非尼既能直接抑制肿瘤细胞的增殖,又能通过抑制血管新生,达到肿瘤饥饿疗法的目的[5]。2005年12月20日获美国FDA快速批准了其作为晚期肾细胞癌的一线治疗药物,是美国FDA10年来批准的第一个治疗肾癌的药物。目前研究表明,索拉非尼对肝癌、非小细胞肺癌以及黑色素瘤等也有疗效[6]。本研究以人肺癌细胞株A549为研究对象,观察不同浓度/时间下索拉尼非对人肺癌细胞A549的增殖及其对VEGFR-2、VEGFR-3、P-VEGFR-2及P-VEGFR-3表达的影响,现报道如下。, http://www.100md.com(司新鹏)