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担载丝裂霉素纳米纤维对膀胱移行细胞癌T24细胞增殖的抑制作用及对细胞周期相关蛋白的影响 被引量:2

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摘要 目的评价担载丝裂霉素的可生物降解载药纳米纤维对膀胱移行细胞癌T24细胞增殖的抑制作用及对细胞周期相关蛋白的影响。方法采用胰酶消化后人工计数法及MTT法检测对T24细胞增殖率的影响;采用Western印迹方法检测细胞周期素依赖激酶(cyclin dependent ki-nase4,CDK4)、WAF1/p21、细胞周期蛋白(cyclin D1)的含量变化。结果 (1)与空白对照组相比,2、4、8 mg的担载丝裂霉素的纳米纤维在24 h后显著地降低了T24细胞数目;载药纤维以剂量-时间依赖的方式,使细胞存活率(OD值)显著下调。(2)随载药剂量逐渐增加,WAF1/p21含量增加,cyc-lin D1和CDK4蛋白含量逐渐降低。结论 (1)担载丝裂霉素的纳米纤维材料以时间和剂量依赖的方式能显著地抑制T24细胞的增殖。随药物剂量升高(0.1~0.8 mg),作用时间延长(12~48 h),抑制作用增强。(2)担载丝裂霉素的纳米纤维对细胞周期相关蛋白的影响表现为剂量依赖的方式(药物剂量0.1~0.8 mg),显著地增强了WAF1/p21的表达,降低了cyclin D1和CDK4的表达。
出处 《中国老年学杂志》 CAS CSCD 北大核心 2012年第3期565-566,共2页 Chinese Journal of Gerontology
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