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整合素受体介导bcl-2反义核酸联合化疗药物对大肠癌细胞的增殖抑制作用 被引量:1

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摘要 目的:评价以整合素配体-聚乙烯亚胺复合物(RGD-PEI)为载体携带bcl-2反义核酸(ASODN)分别联合化疗药物三氧化二砷(As2O3)和羟喜树碱(HCPT)对大肠癌细胞caco-2增殖抑制的作用。方法:改良MTT法检测bcl-2ASODN联合化疗药物对细胞的半数抑制率(IC50),金正均Q值法判断化疗药物与反义核酸联合使用的效果,并计算化疗药物的增敏倍数。结果:单用As2O3和HCPT的IC50分别是3.478μmol/L及0.771μg/mL;0.75μmol/LASOND联合As2O3和HCPT的IC50分别为3.393μmol/L和0.726μg/mL,与单用As2O3和HCPT的IC50相似;而相同浓度的RGD-PEI-ASODN联合As2O3及HCPT的IC50分别为0.119μmol/L和0.071μg/mL,将caco-2细胞对化疗药物的敏感性分别提高29.2倍及10.8倍。结论:在整合素受体介导时可以有效提高反义核酸对caco-2细胞的增殖抑制率,与化疗药物联用能明显提高细胞对化疗药物的敏感性。
出处 《实用医学杂志》 CAS 2006年第7期748-749,共2页 The Journal of Practical Medicine
基金 广东省中医药局基金资助项目(编号:1040068)
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