大麻提取物对人结肠癌细胞LS174T体内外抑制及诱导凋亡作用

目的：研究大麻提取物在体内外对人结肠癌细胞LS174T的生长抑制及诱导凋亡作用。方法：体外培养结肠癌细胞,加以不同浓度（500,250,125,62.5,31.25μg/mL）的大麻提取物培养72 h,用MTT法检测大麻提取物对结肠癌细胞抗增殖的作用;用DNA末端原位标记染（TUNEL）法检测大麻提取物对结肠癌细胞的诱导凋亡作用;建立结肠癌小鼠模型,将实验动物随机分为五组：空白对照组、阳性药物组、低剂量组（25 mg/kg）、中剂量组（50 mg/kg）、高剂量组（100 mg/kg）,每组5只小鼠,2周后处死动物测定肿瘤的重量和体积。结果：不同浓度的大麻提取物处理细胞72 h后,结肠癌细胞的抑制率分别为（93.12±2.66）%（、74.56±4.62）%（、62.37±3.77）%（、36.84±6.24）%（、19.16±4.24）%,各组间抑制率相比,差异有统计学意义（P〈0.05）;用TUNEL法可检测到典型的结肠癌细胞凋亡形态;在结肠癌小鼠模型上给药组肿瘤生长被抑制,其肿瘤体积、重量均较对照组减小,差异具有统计学意义（P〈0.05）。结论：大麻提取物在体内外具有抑制结肠癌细胞LS174T增殖及诱导凋亡的作用,且呈剂量依赖性。

The Cannador Inhibited Proliferation and Induced Apoptosis of Human Colon Carcinoma Cells LS174T in Vivo and Vitro

Objective:To study the Cannador inhibited proliferation and induced apoptosis of human colon carcinoma cells LS174T in vivo and vitro.Methods:Huamn colon carcinoma cells were incubated with different concentration of Cannador for 24,48 and 72 hours,cells viability was measured by MTT assay;Morphological changes of apoptotic cells was detected by TUNEL staining;Nude mouse model with colon carcinoma were established and separated five groups: blank control group,medicine control group,low-dose group(25 mg/kg)...