藏红花素对K562细胞株及裸鼠移植瘤的抑制作用的研究

目的探讨藏红花素对K562细胞株及裸鼠移植瘤的作用。方法利用MTT法检测不同浓度藏红花素对K562细胞的增殖抑制影响;Annexin V-FITC标记法检测K562细胞凋亡;建立K562细胞Balb/c裸鼠皮下移植瘤模型,荷瘤小鼠随机分成4组,分别用10、50、100 mmol/L浓度的藏红花素和生理盐水对瘤体进行局部注射,每次0.1 ml,隔日1次,连续7次,观察瘤体变化。结果不同浓度藏红花素对K562细胞均有抑制作用,呈明显的剂量依赖性,抑制率分别为21.5%、55.1%、81.6%(P<0.05);浓度为0.003 2 mol/L的藏红花素诱导K562细胞凋亡作用最显著,浓度为6.4 mmol/L的藏红花素使K562细胞呈中毒反应,凋亡作用不明显;藏红花素组瘤体生长较对照组明显受到抑制,不同浓度的藏红花素抑瘤率分别为18.5%、79.2%、91.6%。结论藏红花素具有显著抑制K562细胞增殖及促凋亡的作用,能有效抑制K562细胞Balb/c裸鼠移植瘤的生长。

Inhibitory effect of crocin on K562 cells and Balb/c nude mice xenograft tumor

Objective To study the anti-tumor effect of crocin on human leukemia cell line K562 and Balb/c nude mice xenograft tumor.Methods MTT cell proliferation assay was used to evaluate the anti-tumor effect of crocin.The quantization of cells apoptosis was determined by Annexin V-FITC marking method.The model of mouse xenograft tumor was established by injecting human leukemia cancer cell line K562 into the subcutaneous tissue of nude mice.The tumor body of tumor-bearing mice was injected every other day for 7 da...