摘要
背景与目的目前,晚期非小细胞肺癌患者化疗效果已达平台,生物治疗与化疗联合使用可明显改善此类患者的治疗效果。本课题旨在研究rmhTNF-α联合吉西他滨对人肺腺癌细胞A549的杀伤作用及其作用机制。方法应用CCK-8法检测不同浓度rmhTNF-α及吉西他滨对A549细胞抑制率,应用细胞生长曲线描述经rmhTNF-α、吉西他滨干预过的A549细胞增殖情况,应用流式细胞仪检测各药物处理组48h的细胞周期分布及凋亡率,并用光学显微镜及透射电子显微镜观察A549细胞形态及超微结构。结果CCK-8检测结果及细胞生长曲线均提示rmhTNF-α不仅具有抑制A549细胞生长作用,而且可以增强吉西他滨对A549细胞杀伤作用;FCM显示两药联合组可促使A549细胞阻滞在S期,降低G2/M期比率;凋亡比率以吉西他滨+rmhTNF-α组最明显,光镜及电镜下观察结果均能明显观察到A549细胞呈凋亡形态学改变。结论rmhTNF-α通过诱导人肺腺癌细胞A549细胞凋亡及细胞周期阻滞,从而增强吉西他滨对其的杀伤作用。
Background and objective At present clinical researches has proven that the chemotherapeutic effect on advanced non-small cell lung cancer (NSCLC) has gotten to plateau. Biotherapy combined with chemotherapy could improve curative effect on advanced NSCLC obviously. The project is aiming at exploring the killing effect and the mechanism of rmhTNF-α in combination with gemcitabine on human lung adenocarcinoma cell line A549. Methods CCK-8 was used to detect the inhibition ratio of rmhTNF-α and gemcitabine ce...
出处
《中国肺癌杂志》
CAS
2008年第4期495-499,共5页
Chinese Journal of Lung Cancer
