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蛋白标志物在荷人卵巢癌裸鼠移植瘤与化疗后移植瘤中的表达差异

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摘要 目的建立荷人卵巢癌裸鼠皮下移植瘤模型,给予顺铂(DDP)最大可耐受剂量化疗(maximumtolerateddose chemotherapy,MTD-DDP)和顺铂低剂量节拍化疗(low-dose metronomic chemotherapy,LDM-DDP),探讨初发移植瘤与不同模式化疗后移植瘤中乳腺癌耐药蛋白(breast cancer resistant protein,BCRP)、P-糖蛋白(P-glycoprotein,P-gp)和肿瘤干细胞标记物ALDH1(aldehyde dehydrogenase 1,ALDH1)表达水平的差异。方法用人卵巢癌SKOV3细胞株建立荷人卵巢癌裸鼠皮下移植瘤模型,60只裸鼠随机分为MTD-DDP组、LDM-DDP组和对照组,每组20只。2周成瘤后处死对照组裸鼠,用蛋白质印迹法(Western Blotting,WB)检测移植瘤组织中BCRP、P-gp和ALDH1的表达水平。MTD-DDP组、LDM-DDP组在化疗结束后处理裸鼠,用相同方法检测化疗后移植瘤组织中移植瘤组织中BCRP、P-gp和ALDH1的表达水平,探讨造成差异的原因。结果 60只裸鼠均成瘤,成瘤率为100%。LDM-DDP和MTD-DDP组的BCRP蛋白表达水平低于对照组,且LDM-DDP组BCRP表达水平低于MTD-DDP组(P<0.05)。MTD-DDP组、LDMDDP组P-gp蛋白表达均高于对照组,且LDM-DDP组P-gp表达水平低于MTD-DDP组(P<0.05)。LDM-DDP和MTD-DDP组的ALDH1表达低于对照组,且LDM-DDP组ALDH1表达水平低于MTD-DDP组(P<0.05)。结论与LDM-DDP组相比较,MTD-DDP组化疗后残余瘤中耐药相关蛋白高表达,且更易富集肿瘤干细胞标志物ALDH1,LDM是一种未来可供选择的,目的在于提高化疗敏感性、降低复发耐药的化疗模式。
作者 孙亚楠 侯连国 贾晓鹏 崔娜 张彩虹
机构地区 中国人民解放军白求恩和平医院妇产科 河北医科大学生化教研室 河北医科大学第三医院 河北医科大学第二医院
出处 《河北医药》 CAS 2015年第22期3464-3467,共4页 Hebei Medical Journal
基金 河北省医学科学研究重点课题(编号:20130005)
关键词 卵巢上皮性癌 DDP化疗 多药耐药相关蛋白 蛋白印迹法
分类号 R737.31 [医药卫生—肿瘤]
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河北医药
2015年 第22期

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