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网络首发:2015-12-20,
纸质出版:2015
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DDR1抑制剂与IGF-1R抑制剂联合应用及机制[J]. 中山大学学报(医学科学版), 2015,36(6).
Effects of DDR1 Inhibitor on Nasopharyngeal Carcinoma Cells and Its Possible Mechanism[J]. Journal of Sun Yat-sen University (Medical Sciences), 2015, 36(6).
DDR1抑制剂与IGF-1R抑制剂联合应用及机制[J]. 中山大学学报(医学科学版), 2015,36(6). DOI:
Effects of DDR1 Inhibitor on Nasopharyngeal Carcinoma Cells and Its Possible Mechanism[J]. Journal of Sun Yat-sen University (Medical Sciences), 2015, 36(6). DOI:
摘 要: 【目的】 研究盘状结构域受体(DDR1)的抑制剂3-(2-(吡唑并[1,5-a]嘧啶-6-基)乙炔基)苯甲酰胺7RH对鼻咽癌细胞的体外抗肿瘤作用及相关机制,为该药用于鼻咽癌的临床治疗提供实验依据。【方法】 采用MTT法绘制细胞生长曲线,计算7RH对鼻咽癌细胞的半数抑制浓度(IC50值);Western Blot检测7RH引起鼻咽癌细胞中信号通路的改变,并检测SiRNA瞬时转染方法干扰DDR1后phospho-IGF-1R的改变。【结果】 7RH在体外明显抑制鼻咽癌细胞的增殖并且呈浓度依赖性;7RH作用鼻咽癌细胞株CNE2和HK1的IC50值分别为2.60 μmol/L与6.33 μmol/L;应用7RH处理或者使用SiRNA瞬时转染方法干扰DDR1后,CNE2的IGF-1R的磷酸化水平明显增强;联用DDR1抑制剂和IGF-IR抑制剂能更有效地抑制肿瘤细胞的增殖,两者联用能更显著地抑制AKT活性。【结论】 DDR1的抑制剂3-(2-(吡唑并[1,5-a]嘧啶-6-基)乙炔基)苯甲酰胺7RH能在体外有效地抑制鼻咽癌细胞的增殖。联用7RH和IGF-IR抑制剂能通过抑制 PI3K/AKT 通路更有效抑制鼻咽癌细胞的增殖。
Abstract: 【Objective】 To investigate the effect of DDR1 inhibitor (3 -(2 -(Pyrazolo[1,5 -a]pyrimidin -6 -yl) -ethynyl) -benzamides compounds 7RH on nasopharyngeal carcinoma in vitro and its possible mechanism to determine whether 7RH can be a candidate for target therapy in human NPC. 【Methods】 The cell growth rate and 50% inhibitory concentration (IC50) were determined by MTT assay. Influence on protein expression of cell signal pathway through application of 7RH or DDR1 -specific siRNA were detected via Western Blot. 【Results】 7RH with different concentration showed significant inhibitory effect on NPC cell line CNE2 in vitro and there was increased in a concentration dependent manner. The half maximal inhibitory concentration IC50 of CNE2 and HK1 were 2.60 μmol/L and 6.33 μmol/L, respectively. Besides, 7RH significantly up -regulated the expression of phospho -IGF -1R, and combined 7RH with IGF -1R inhibitor evidently attenuated PI3K/AKT pathway activity as well as cell proliferation in vitro. 【Conclusion】 DDR1 inhibitor 7RH shows anticancer effect on human NPC cells in vitro. This study suggested dual inhibition of DDR1 and IGF -1R may be a rational therapeutic approach in NPC cells by blocking PI3K/AKT pathway.
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