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Effect of 60Co γ-ray external irradiation on MMP expression in human PC-3 prostate cancer cell line
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- Author:
- No author available
- Journal Title:
- JOURNAL OF THE FOURTH MILITARY MEDICAL UNIVERSITY
- Issue:
- 22
- DOI:
- 10.3321/j.issn:1000-2790.2005.22.005
- Key Word:
- 前列腺癌;γ-射线;基质金属蛋白酶类
Abstract： 目的:通过用不同剂量60Co γ射线照射人前列腺癌细胞系PC-3细胞后, 观察MMP2, MMP9的变化,阐明γ射线对前列腺癌PC-3细胞转移侵袭能力的影响. 方法:采用1, 3和5 Gy不同剂量的60Co γ射线,分别照射体外培养的人前列腺癌PC-3细胞系,用MTT方法观察细胞生长,软琼脂克隆集落形成试验观察细胞的克隆形成率;Western Blot检测其蛋白含量变化. 结果:① 1, 3和5 Gy组均可明显抑制细胞的生长;②细胞的克隆形成率随着照射剂量的增加而逐渐降低;③ Western Blot检测其蛋白含量,显示在各实验组中MMP2总体上出现降低趋势;MMP9表达在1, 3和5 Gy组均高于对照组. 结论:亚致死剂量的60Co γ射线照射前列腺癌PC-3细胞后,MMP9表达增高,提示存活肿瘤细胞的浸润性也同时增高.
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