光动力联合紫杉醇对食管癌细胞株Eca-109增殖的影响

目的 探讨血卟啉衍生物联合紫杉醇注射液对人食管癌细胞Eca-109体外光动力疗法效应的影响.方法 将食管癌细胞株Eca-109分为8组:对照组、化疗组、化疗+高剂量光敏剂治疗组、化疗+中剂量光敏剂治疗组、化疗+低剂量光敏剂治疗组、高剂量光敏剂治疗组、中剂量光敏剂治疗组和低剂量光敏剂治疗组.种板孵育24 h,检测肿瘤细胞的存活率:于化疗方案组加入紫杉醇作用12 h,再往含光敏剂实验组分别加入血卟啉衍生物高、中、低剂量,4h后行光动力照射,照光前后荧光显微镜下观察细胞凋亡形态,照光后继续培育24 h,开始行MTT法检测食管癌细胞增殖的抑制率:流式细胞仪检测细胞凋亡率.结果 血卟啉衍生物浓度越高食管癌细胞显示的荧光强度越强,荧光强弱与细胞的活性成正比,与紫杉醇联合组则可见到更多凋亡细胞.在肿瘤细胞的生长抑制率、细胞凋亡率方面.化疗+高剂量光敏剂光动力治疗组与空白对照组、单纯化疗组及低剂量光敏剂光动力治疗组相比,差异均有显著意义(P<0.01);含光敏剂大剂量组与小剂量组相比,差异有显著意义(P<0.05);化疗组及光动力组与空白对照组相比.差异有显著意义(,P<0.05).结论 光动力联合紫杉醇化疗对人食管癌细胞细胞株Eca-109增殖有协同抑制作用,二者可协同诱导人食管癌细胞株发生凋亡.

Inhibitory effect of photodynamic therapy combined with paclitaxel on the proliferation of esophageal carcinoma Eca-109 cells

Objective To investigate the inhibitory effect of photodynamic therapy(PDT) in combination with paclitaxel(PCT) on proliferation in esophageal carcinoma Eca-109 cells line.Methods Eca-109 cells were treated with PCT alone,HPD alone at different doses,or their combinations.For the combined treatments,the cells were exposed to PCT for 12 h followed by incubation with HPD at high,middle or low concentrations for 4 h.PDT was then performed on these treated cells and fluorescence microscopic observation was made...