鼻咽清颗粒抑制鼻咽癌CNE-2细胞体外增殖及对放疗敏感性的影响

Effect of Biyanqing Granule on Proliferation and Radiosensitivity of Nasopharyngeal Carcinoma CNE-2 Cells in vitro

目的:体外考察鼻咽清颗粒对鼻咽癌CNE-2细胞的抑制和放射增敏作用。方法:以体外培养的鼻咽癌CNE-2细胞为研究对象,MTT法考察鼻咽清颗粒对CNE-2细胞的增殖抑制作用,克隆形成实验检测鼻咽清颗粒对CNE-2细胞的放射增敏效应,流式细胞仪检测鼻咽清颗粒对CNE-2细胞周期和细胞凋亡的影响。结果:鼻咽淸颗粒浓缩液能抑制CNE-2细胞的增殖,其抑制作用呈时间-剂量依赖性;24,48和72 h的IC_50分别70.79,60.13,51.63 mg·ml-1(按主药材质量计);集落形成实验表明鼻咽清颗粒的浓缩液联合放射能明显降低CNE-2细胞集落形成,随着主药浓度的增加,CNE-2细胞集落形成减少,阴性对照组、单纯放射组、10 mg·ml-1和20 mg·ml-1(按主药材的重量计)鼻咽清浓缩液的集落形成数差异具有统计学意义(P<0.05);随着培养基中鼻咽清主药含量的增加,G2/M期所占的百分比提高,凋亡细胞所占的比例也相应增加,与对照组相比差异具有统计学意义(P<0.05)。结论:鼻咽清颗粒可抑制鼻咽癌CNE-2细胞增殖,将CNE-2细胞阻滞于G2/M期,诱导鼻咽癌细胞凋亡,具有放疗增敏作用。

Objective：To explore the proliferation inhibition and radiosensitization of Biyanqing granule on nasopharyngeal carci -noma cell line CNE-2 in vitro.Methods：CNE-2 cells were cultured in vitro.The inhibition of Biyanqing granule on the proliferation of CNE-2 cell was evaluated by MTT assay .Radiosensitization was explored by clone formation assay , and cell cycle and apopotosis were observed by flow cytometry （ FCM） .Results：Biyanqing granule could inhibit the proliferation of CNE-2 in a time-and dose-dependent manner.The IC50 in 24, 48 and 72 h was 70.79, 60.13 and 51.63 mg· ml-1（calculated according to the weight of all medicinal ma-terial）, respectively.The colony formation assay showed that Biyanqing granule combined with radiation could significantly reduce the colony formation of CNE-2 cells.With the concentration increase of the main drug , the colony formation of CNE-2 cells was reduced . The number of colony formation in the negative control group , the radiation group , 10 mg· ml-1 and 20 mg· ml-1 Biyanqing combined with radiation groups （calculated according to the weight of all medicinal material ） was significant different （P〈0.05）.With the main drug concentration increasing , the percentage of G 2/M phase and apoptotic cells were both increased , and compared with the con-trol group, the difference was significant （P〈0.05）.Conclusion：Biyanqing granule can not only inhibit CNE-2 cells but also block CNE-2 cells in G2/M to improve the radiosensitization of CNE-2 cells.