白藜芦醇对人下咽鳞状细胞癌裸鼠移植瘤的放射增敏作用

摘要

Objective To study the radiosensitizing effect of resveratrol on human hypo pharyngeal squamous cell carcinoma (FaDu) cells in nude mice. Methods Forty-three nude mice bearing FaDu cell xenografts were randomized into control group, radiotherapy (12 Gy) group, resveratrol treatment (50 mg/kg) group, and radiotherapy plus resveratrol treatment group. After corresponding treatments, the tumor volume in the mice was measured every 3 days, and the microvessel density (MVD) in the tumor was evaluated with CD31 immunofluorescence histochemical staining. Results The tumor volume and weight were the smallest in mice receiving radiotherapy plus resveratrol treatment (P<0.05) but comparable between those having resveratrol treatment alone and the control mice. Radiotherapy plus resveratrol treatment resulted in a tumor inhibition rate of 76.64% and a significantly decreased MVD in the tumor compared with the other 3 groups. Conclusion Resveratrol can produce a radiosensitizing effect on human hypopharyngeal carcinoma in nude mice.%目的：研究白藜芦醇对人下咽鳞状细胞癌（FADU）裸鼠移植瘤的放射增敏作用。方法放射增敏实验方案：43只移植瘤裸鼠随机分为4组：对照组、单纯放射治疗组、单纯药物（白藜芦醇）治疗组及增敏（放射+白藜芦醇药物治疗）组，绘制生长曲线，计算抑瘤率。对瘤体行CD31免疫荧光组化染色并进行微血管计数。结果增敏组肿瘤体积最小，瘤质量最轻，与其他3组比较差异具有统计学意义（P<0.05），抑瘤率达76.64%。增敏组MVD显著降低，与对照组、单纯药物组和放疗组比较差异具有统计学意义（P<0.05）。结论白藜芦醇对FADU鳞状细胞癌裸鼠移植瘤通过抑制放疗后微血管形成实现放射增敏效果。